diff options
Diffstat (limited to 'WebCore/accessibility')
46 files changed, 11570 insertions, 0 deletions
diff --git a/WebCore/accessibility/AXObjectCache.cpp b/WebCore/accessibility/AXObjectCache.cpp new file mode 100644 index 0000000..ec250ed --- /dev/null +++ b/WebCore/accessibility/AXObjectCache.cpp @@ -0,0 +1,341 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AXObjectCache.h" + +#include "AccessibilityARIAGrid.h" +#include "AccessibilityARIAGridRow.h" +#include "AccessibilityARIAGridCell.h" +#include "AccessibilityList.h" +#include "AccessibilityListBox.h" +#include "AccessibilityListBoxOption.h" +#include "AccessibilityImageMapLink.h" +#include "AccessibilityRenderObject.h" +#include "AccessibilityTable.h" +#include "AccessibilityTableCell.h" +#include "AccessibilityTableColumn.h" +#include "AccessibilityTableHeaderContainer.h" +#include "AccessibilityTableRow.h" +#include "HTMLNames.h" +#include "RenderObject.h" +#include "RenderView.h" + +#include <wtf/PassRefPtr.h> + +namespace WebCore { + +using namespace HTMLNames; + +bool AXObjectCache::gAccessibilityEnabled = false; +bool AXObjectCache::gAccessibilityEnhancedUserInterfaceEnabled = false; + +AXObjectCache::AXObjectCache() + : m_notificationPostTimer(this, &AXObjectCache::notificationPostTimerFired) +{ +} + +AXObjectCache::~AXObjectCache() +{ + HashMap<AXID, RefPtr<AccessibilityObject> >::iterator end = m_objects.end(); + for (HashMap<AXID, RefPtr<AccessibilityObject> >::iterator it = m_objects.begin(); it != end; ++it) { + AccessibilityObject* obj = (*it).second.get(); + detachWrapper(obj); + obj->detach(); + removeAXID(obj); + } +} + +AccessibilityObject* AXObjectCache::get(RenderObject* renderer) +{ + if (!renderer) + return 0; + + AccessibilityObject* obj = 0; + AXID axID = m_renderObjectMapping.get(renderer); + ASSERT(!HashTraits<AXID>::isDeletedValue(axID)); + + if (axID) + obj = m_objects.get(axID).get(); + + return obj; +} + +bool AXObjectCache::nodeIsAriaType(Node* node, String role) +{ + if (!node || !node->isElementNode()) + return false; + + return equalIgnoringCase(static_cast<Element*>(node)->getAttribute(roleAttr), role); +} + +AccessibilityObject* AXObjectCache::getOrCreate(RenderObject* renderer) +{ + if (!renderer) + return 0; + + AccessibilityObject* obj = get(renderer); + + if (!obj) { + Node* node = renderer->node(); + RefPtr<AccessibilityObject> newObj = 0; + if (renderer->isListBox()) + newObj = AccessibilityListBox::create(renderer); + else if (node && (node->hasTagName(ulTag) || node->hasTagName(olTag) || node->hasTagName(dlTag))) + newObj = AccessibilityList::create(renderer); + + // aria tables + else if (nodeIsAriaType(node, "grid")) + newObj = AccessibilityARIAGrid::create(renderer); + else if (nodeIsAriaType(node, "row")) + newObj = AccessibilityARIAGridRow::create(renderer); + else if (nodeIsAriaType(node, "gridcell") || nodeIsAriaType(node, "columnheader") || nodeIsAriaType(node, "rowheader")) + newObj = AccessibilityARIAGridCell::create(renderer); + + // standard tables + else if (renderer->isTable()) + newObj = AccessibilityTable::create(renderer); + else if (renderer->isTableRow()) + newObj = AccessibilityTableRow::create(renderer); + else if (renderer->isTableCell()) + newObj = AccessibilityTableCell::create(renderer); + + else + newObj = AccessibilityRenderObject::create(renderer); + + obj = newObj.get(); + + getAXID(obj); + + m_renderObjectMapping.set(renderer, obj->axObjectID()); + m_objects.set(obj->axObjectID(), obj); + attachWrapper(obj); + } + + return obj; +} + +AccessibilityObject* AXObjectCache::getOrCreate(AccessibilityRole role) +{ + RefPtr<AccessibilityObject> obj = 0; + + // will be filled in... + switch (role) { + case ListBoxOptionRole: + obj = AccessibilityListBoxOption::create(); + break; + case ImageMapLinkRole: + obj = AccessibilityImageMapLink::create(); + break; + case ColumnRole: + obj = AccessibilityTableColumn::create(); + break; + case TableHeaderContainerRole: + obj = AccessibilityTableHeaderContainer::create(); + break; + default: + obj = 0; + } + + if (obj) + getAXID(obj.get()); + else + return 0; + + m_objects.set(obj->axObjectID(), obj); + attachWrapper(obj.get()); + return obj.get(); +} + +void AXObjectCache::remove(AXID axID) +{ + if (!axID) + return; + + // first fetch object to operate some cleanup functions on it + AccessibilityObject* obj = m_objects.get(axID).get(); + if (!obj) + return; + + detachWrapper(obj); + obj->detach(); + removeAXID(obj); + + // finally remove the object + if (!m_objects.take(axID)) { + return; + } + + ASSERT(m_objects.size() >= m_idsInUse.size()); +} + +void AXObjectCache::remove(RenderObject* renderer) +{ + if (!renderer) + return; + + AXID axID = m_renderObjectMapping.get(renderer); + remove(axID); + m_renderObjectMapping.remove(renderer); +} + +AXID AXObjectCache::getAXID(AccessibilityObject* obj) +{ + // check for already-assigned ID + AXID objID = obj->axObjectID(); + if (objID) { + ASSERT(m_idsInUse.contains(objID)); + return objID; + } + + // generate a new ID + static AXID lastUsedID = 0; + objID = lastUsedID; + do + ++objID; + while (objID == 0 || HashTraits<AXID>::isDeletedValue(objID) || m_idsInUse.contains(objID)); + m_idsInUse.add(objID); + lastUsedID = objID; + obj->setAXObjectID(objID); + + return objID; +} + +void AXObjectCache::removeAXID(AccessibilityObject* obj) +{ + if (!obj) + return; + + AXID objID = obj->axObjectID(); + if (objID == 0) + return; + ASSERT(!HashTraits<AXID>::isDeletedValue(objID)); + ASSERT(m_idsInUse.contains(objID)); + obj->setAXObjectID(0); + m_idsInUse.remove(objID); +} + +void AXObjectCache::childrenChanged(RenderObject* renderer) +{ + if (!renderer) + return; + + AXID axID = m_renderObjectMapping.get(renderer); + if (!axID) + return; + + AccessibilityObject* obj = m_objects.get(axID).get(); + if (obj) + obj->childrenChanged(); +} + +void AXObjectCache::notificationPostTimerFired(Timer<AXObjectCache>*) +{ + m_notificationPostTimer.stop(); + + unsigned i = 0, count = m_notificationsToPost.size(); + for (i = 0; i < count; ++i) { + AccessibilityObject* obj = m_notificationsToPost[i].first; +#ifndef NDEBUG + // Make sure none of the render views are in the process of being layed out. + // Notifications should only be sent after the renderer has finished + if (obj->isAccessibilityRenderObject()) { + AccessibilityRenderObject* renderObj = static_cast<AccessibilityRenderObject*>(obj); + RenderObject* renderer = renderObj->renderer(); + if (renderer && renderer->view()) + ASSERT(!renderer->view()->layoutState()); + } +#endif + + postPlatformNotification(obj, m_notificationsToPost[i].second); + } + + m_notificationsToPost.clear(); +} + +#if HAVE(ACCESSIBILITY) +void AXObjectCache::postNotification(RenderObject* renderer, const String& message, bool postToElement) +{ + // Notifications for text input objects are sent to that object. + // All others are sent to the top WebArea. + if (!renderer) + return; + + // Get an accessibility object that already exists. One should not be created here + // because a render update may be in progress and creating an AX object can re-trigger a layout + RefPtr<AccessibilityObject> obj = get(renderer); + while (!obj && renderer) { + renderer = renderer->parent(); + obj = get(renderer); + } + + if (!renderer) + return; + + if (obj && !postToElement) + obj = obj->observableObject(); + + Document* document = renderer->document(); + if (!obj && document) + obj = get(document->renderer()); + + if (!obj) + return; + + m_notificationsToPost.append(make_pair(obj.get(), message)); + if (!m_notificationPostTimer.isActive()) + m_notificationPostTimer.startOneShot(0); +} + +void AXObjectCache::selectedChildrenChanged(RenderObject* renderer) +{ + postNotification(renderer, "AXSelectedChildrenChanged", true); +} +#endif + +#if HAVE(ACCESSIBILITY) +void AXObjectCache::handleActiveDescendantChanged(RenderObject* renderer) +{ + if (!renderer) + return; + AccessibilityObject* obj = getOrCreate(renderer); + if (obj) + obj->handleActiveDescendantChanged(); +} + +void AXObjectCache::handleAriaRoleChanged(RenderObject* renderer) +{ + if (!renderer) + return; + AccessibilityObject* obj = getOrCreate(renderer); + if (obj && obj->isAccessibilityRenderObject()) + static_cast<AccessibilityRenderObject*>(obj)->setAriaRole(); +} +#endif + +} // namespace WebCore diff --git a/WebCore/accessibility/AXObjectCache.h b/WebCore/accessibility/AXObjectCache.h new file mode 100644 index 0000000..904283c --- /dev/null +++ b/WebCore/accessibility/AXObjectCache.h @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2003, 2006, 2007, 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AXObjectCache_h +#define AXObjectCache_h + +#include "AccessibilityObject.h" +#include "EventHandler.h" +#include "Timer.h" +#include <limits.h> +#include <wtf/HashMap.h> +#include <wtf/HashSet.h> +#include <wtf/RefPtr.h> + +#ifdef __OBJC__ +@class WebCoreTextMarker; +#else +class WebCoreTextMarker; +#endif + +namespace WebCore { + + class RenderObject; + class String; + class VisiblePosition; + class AccessibilityObject; + class Node; + + typedef unsigned AXID; + + struct TextMarkerData { + AXID axID; + Node* node; + int offset; + EAffinity affinity; + }; + + class AXObjectCache { + public: + AXObjectCache(); + ~AXObjectCache(); + + // to be used with render objects + AccessibilityObject* getOrCreate(RenderObject*); + + // used for objects without backing elements + AccessibilityObject* getOrCreate(AccessibilityRole); + + // will only return the AccessibilityObject if it already exists + AccessibilityObject* get(RenderObject*); + + void remove(RenderObject*); + void remove(AXID); + + void detachWrapper(AccessibilityObject*); + void attachWrapper(AccessibilityObject*); + void postNotification(RenderObject*, const String&, bool postToElement); + void postPlatformNotification(AccessibilityObject*, const String&); + void childrenChanged(RenderObject*); + void selectedChildrenChanged(RenderObject*); + void handleActiveDescendantChanged(RenderObject*); + void handleAriaRoleChanged(RenderObject*); + void handleFocusedUIElementChanged(); +#if PLATFORM(GTK) + void handleFocusedUIElementChangedWithRenderers(RenderObject*, RenderObject*); +#endif + static void enableAccessibility() { gAccessibilityEnabled = true; } + static void enableEnhancedUserInterfaceAccessibility() { gAccessibilityEnhancedUserInterfaceEnabled = true; } + + static bool accessibilityEnabled() { return gAccessibilityEnabled; } + static bool accessibilityEnhancedUserInterfaceEnabled() { return gAccessibilityEnhancedUserInterfaceEnabled; } + + void removeAXID(AccessibilityObject*); + bool isIDinUse(AXID id) const { return m_idsInUse.contains(id); } + + private: + HashMap<AXID, RefPtr<AccessibilityObject> > m_objects; + HashMap<RenderObject*, AXID> m_renderObjectMapping; + static bool gAccessibilityEnabled; + static bool gAccessibilityEnhancedUserInterfaceEnabled; + + HashSet<AXID> m_idsInUse; + + Timer<AXObjectCache> m_notificationPostTimer; + Vector<pair<AccessibilityObject*, const String> > m_notificationsToPost; + void notificationPostTimerFired(Timer<AXObjectCache>*); + + AXID getAXID(AccessibilityObject*); + bool nodeIsAriaType(Node* node, String role); + }; + +#if !HAVE(ACCESSIBILITY) + inline void AXObjectCache::handleActiveDescendantChanged(RenderObject*) { } + inline void AXObjectCache::handleAriaRoleChanged(RenderObject*) { } + inline void AXObjectCache::handleFocusedUIElementChanged() { } + inline void AXObjectCache::detachWrapper(AccessibilityObject*) { } + inline void AXObjectCache::attachWrapper(AccessibilityObject*) { } + inline void AXObjectCache::selectedChildrenChanged(RenderObject*) { } + inline void AXObjectCache::postNotification(RenderObject*, const String&, bool postToElement) { } + inline void AXObjectCache::postPlatformNotification(AccessibilityObject*, const String&) { } +#if PLATFORM(GTK) + inline void AXObjectCache::handleFocusedUIElementChangedWithRenderers(RenderObject*, RenderObject*) { } +#endif +#endif + +} + +#endif diff --git a/WebCore/accessibility/AccessibilityARIAGrid.cpp b/WebCore/accessibility/AccessibilityARIAGrid.cpp new file mode 100644 index 0000000..69c4512 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGrid.cpp @@ -0,0 +1,154 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityARIAGrid.h" + +#include "AccessibilityTableCell.h" +#include "AccessibilityTableColumn.h" +#include "AccessibilityTableHeaderContainer.h" +#include "AccessibilityTableRow.h" +#include "AXObjectCache.h" +#include "RenderObject.h" + +using namespace std; + +namespace WebCore { + +AccessibilityARIAGrid::AccessibilityARIAGrid(RenderObject* renderer) + : AccessibilityTable(renderer) +{ +#if ACCESSIBILITY_TABLES + m_isAccessibilityTable = true; +#else + m_isAccessibilityTable = false; +#endif +} + +AccessibilityARIAGrid::~AccessibilityARIAGrid() +{ +} + +PassRefPtr<AccessibilityARIAGrid> AccessibilityARIAGrid::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityARIAGrid(renderer)); +} + +void AccessibilityARIAGrid::addChild(AccessibilityObject* child, HashSet<AccessibilityObject*>& appendedRows, unsigned& columnCount) +{ + if (!child || !child->isTableRow() || child->ariaRoleAttribute() != RowRole) + return; + + AccessibilityTableRow* row = static_cast<AccessibilityTableRow*>(child); + if (appendedRows.contains(row)) + return; + + // store the maximum number of columns + unsigned rowCellCount = row->children().size(); + if (rowCellCount > columnCount) + columnCount = rowCellCount; + + row->setRowIndex((int)m_rows.size()); + m_rows.append(row); + m_children.append(row); + appendedRows.add(row); +} + +void AccessibilityARIAGrid::addChildren() +{ + ASSERT(!m_haveChildren); + + if (!isDataTable()) { + AccessibilityRenderObject::addChildren(); + return; + } + + m_haveChildren = true; + if (!m_renderer) + return; + + AXObjectCache* axCache = m_renderer->document()->axObjectCache(); + + // add only rows that are labeled as aria rows + HashSet<AccessibilityObject*> appendedRows; + unsigned columnCount = 0; + for (RefPtr<AccessibilityObject> child = firstChild(); child; child = child->nextSibling()) { + + // in case the render tree doesn't match the expected ARIA hierarchy, look at the children + if (child->accessibilityIsIgnored()) { + if (!child->hasChildren()) + child->addChildren(); + + AccessibilityChildrenVector children = child->children(); + unsigned length = children.size(); + for (unsigned i = 0; i < length; ++i) + addChild(children[i].get(), appendedRows, columnCount); + } else + addChild(child.get(), appendedRows, columnCount); + } + + // make the columns based on the number of columns in the first body + for (unsigned i = 0; i < columnCount; ++i) { + AccessibilityTableColumn* column = static_cast<AccessibilityTableColumn*>(axCache->getOrCreate(ColumnRole)); + column->setColumnIndex((int)i); + column->setParentTable(this); + m_columns.append(column); + m_children.append(column); + } + + AccessibilityObject* headerContainerObject = headerContainer(); + if (headerContainerObject) + m_children.append(headerContainerObject); +} + +AccessibilityTableCell* AccessibilityARIAGrid::cellForColumnAndRow(unsigned column, unsigned row) +{ + if (!m_renderer) + return 0; + + if (!hasChildren()) + addChildren(); + + if (column >= columnCount() || row >= rowCount()) + return 0; + + AccessibilityObject *tableRow = m_rows[row].get(); + if (!tableRow) + return 0; + + AccessibilityChildrenVector children = tableRow->children(); + // in case this row had fewer columns than other rows + AccessibilityObject* tableCell = 0; + if (column >= children.size()) + return 0; + + tableCell = children[column].get(); + return static_cast<AccessibilityTableCell*>(tableCell); +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityARIAGrid.h b/WebCore/accessibility/AccessibilityARIAGrid.h new file mode 100644 index 0000000..32c8ce9 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGrid.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityARIAGrid_h +#define AccessibilityARIAGrid_h + +#include "AccessibilityTable.h" + +namespace WebCore { + +class String; +class AccessibilityTableCell; +class AccessibilityTableHeaderContainer; + +class AccessibilityARIAGrid : public AccessibilityTable { + +private: + AccessibilityARIAGrid(RenderObject*); +public: + static PassRefPtr<AccessibilityARIAGrid> create(RenderObject*); + virtual ~AccessibilityARIAGrid(); + + virtual bool isAriaTable() const { return true; } + + virtual void addChildren(); + + virtual AccessibilityTableCell* cellForColumnAndRow(unsigned column, unsigned row); + +private: + void addChild(AccessibilityObject* object, HashSet<AccessibilityObject*>& appendedRows, unsigned& columnCount); +}; + +} // namespace WebCore + +#endif // AccessibilityARIAGrid_h diff --git a/WebCore/accessibility/AccessibilityARIAGridCell.cpp b/WebCore/accessibility/AccessibilityARIAGridCell.cpp new file mode 100644 index 0000000..1771bb8 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGridCell.cpp @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityARIAGridCell.h" + +#include "AccessibilityObject.h" +#include "AccessibilityTableRow.h" + +using namespace std; + +namespace WebCore { + +AccessibilityARIAGridCell::AccessibilityARIAGridCell(RenderObject* renderer) + : AccessibilityTableCell(renderer) +{ +} + +AccessibilityARIAGridCell::~AccessibilityARIAGridCell() +{ +} + +PassRefPtr<AccessibilityARIAGridCell> AccessibilityARIAGridCell::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityARIAGridCell(renderer)); +} + +AccessibilityObject* AccessibilityARIAGridCell::parentTable() const +{ + AccessibilityObject* parent = parentObjectUnignored(); + if (!parent || !parent->isTableRow()) + return 0; + + parent = parent->parentObjectUnignored(); + if (!parent || !parent->isDataTable()) + return 0; + + return parent; +} + +void AccessibilityARIAGridCell::rowIndexRange(pair<int, int>& rowRange) +{ + AccessibilityObject* parent = parentObjectUnignored(); + if (!parent || !parent->isTableRow()) + return; + + // as far as I can tell, grid cells cannot span rows + rowRange.first = static_cast<AccessibilityTableRow*>(parent)->rowIndex(); + rowRange.second = 1; +} + +void AccessibilityARIAGridCell::columnIndexRange(pair<int, int>& columnRange) +{ + AccessibilityObject* parent = parentObjectUnignored(); + if (!parent || !parent->isTableRow()) + return; + + AccessibilityChildrenVector siblings = parent->children(); + unsigned childrenSize = siblings.size(); + for (unsigned k = 0; k < childrenSize; ++k) { + if (siblings[k].get() == this) { + columnRange.first = k; + break; + } + } + + // as far as I can tell, grid cells cannot span columns + columnRange.second = 1; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityARIAGridCell.h b/WebCore/accessibility/AccessibilityARIAGridCell.h new file mode 100644 index 0000000..2923de8 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGridCell.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityARIAGridCell_h +#define AccessibilityARIAGridCell_h + +#include "AccessibilityTableCell.h" + +namespace WebCore { + +class AccessibilityARIAGridCell : public AccessibilityTableCell { + +private: + AccessibilityARIAGridCell(RenderObject*); +public: + static PassRefPtr<AccessibilityARIAGridCell> create(RenderObject*); + virtual ~AccessibilityARIAGridCell(); + + // fills in the start location and row span of cell + virtual void rowIndexRange(pair<int, int>& rowRange); + // fills in the start location and column span of cell + virtual void columnIndexRange(pair<int, int>& columnRange); + +protected: + virtual AccessibilityObject* parentTable() const; +}; + +} // namespace WebCore + +#endif // AccessibilityARIAGridCell_h diff --git a/WebCore/accessibility/AccessibilityARIAGridRow.cpp b/WebCore/accessibility/AccessibilityARIAGridRow.cpp new file mode 100644 index 0000000..6e1f1c8 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGridRow.cpp @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityARIAGridRow.h" + +#include "AccessibilityObject.h" +#include "RenderObject.h" + +using namespace std; + +namespace WebCore { + +AccessibilityARIAGridRow::AccessibilityARIAGridRow(RenderObject* renderer) + : AccessibilityTableRow(renderer) +{ +} + +AccessibilityARIAGridRow::~AccessibilityARIAGridRow() +{ +} + +PassRefPtr<AccessibilityARIAGridRow> AccessibilityARIAGridRow::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityARIAGridRow(renderer)); +} + +AccessibilityObject* AccessibilityARIAGridRow::parentTable() const +{ + AccessibilityObject* parent = parentObjectUnignored(); + if (!parent->isDataTable()) + return 0; + + return parent; +} + +AccessibilityObject* AccessibilityARIAGridRow::headerObject() +{ + AccessibilityChildrenVector rowChildren = children(); + unsigned childrenCount = rowChildren.size(); + for (unsigned i = 0; i < childrenCount; ++i) { + AccessibilityObject* cell = rowChildren[i].get(); + if (cell->ariaRoleAttribute() == RowHeaderRole) + return cell; + } + + return 0; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityARIAGridRow.h b/WebCore/accessibility/AccessibilityARIAGridRow.h new file mode 100644 index 0000000..c2ca8b8 --- /dev/null +++ b/WebCore/accessibility/AccessibilityARIAGridRow.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityARIAGridRow_h +#define AccessibilityARIAGridRow_h + +#include "AccessibilityTableRow.h" + +namespace WebCore { + +class AccessibilityARIAGridRow : public AccessibilityTableRow { + +private: + AccessibilityARIAGridRow(RenderObject*); +public: + static PassRefPtr<AccessibilityARIAGridRow> create(RenderObject*); + virtual ~AccessibilityARIAGridRow(); + + virtual AccessibilityObject* headerObject(); + virtual AccessibilityObject* parentTable() const; +}; + +} // namespace WebCore + +#endif // AccessibilityARIAGridRow_h diff --git a/WebCore/accessibility/AccessibilityImageMapLink.cpp b/WebCore/accessibility/AccessibilityImageMapLink.cpp new file mode 100644 index 0000000..943122e --- /dev/null +++ b/WebCore/accessibility/AccessibilityImageMapLink.cpp @@ -0,0 +1,138 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityImageMapLink.h" + +#include "AccessibilityRenderObject.h" +#include "AXObjectCache.h" +#include "Document.h" +#include "HTMLNames.h" +#include "IntRect.h" +#include "RenderObject.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityImageMapLink::AccessibilityImageMapLink() + : m_areaElement(0), + m_mapElement(0) +{ +} + +AccessibilityImageMapLink::~AccessibilityImageMapLink() +{ +} + +PassRefPtr<AccessibilityImageMapLink> AccessibilityImageMapLink::create() +{ + return adoptRef(new AccessibilityImageMapLink()); +} + +AccessibilityObject* AccessibilityImageMapLink::parentObject() const +{ + if (m_parent) + return m_parent; + + if (!m_mapElement || !m_mapElement->renderer()) + return 0; + + return m_mapElement->document()->axObjectCache()->getOrCreate(m_mapElement->renderer()); +} + +Element* AccessibilityImageMapLink::actionElement() const +{ + return anchorElement(); +} + +Element* AccessibilityImageMapLink::anchorElement() const +{ + return m_areaElement; +} + +KURL AccessibilityImageMapLink::url() const +{ + if (!m_areaElement) + return KURL(); + + return m_areaElement->href(); +} + +String AccessibilityImageMapLink::accessibilityDescription() const +{ + if (!m_areaElement) + return String(); + + const AtomicString& alt = m_areaElement->getAttribute(altAttr); + if (!alt.isEmpty()) + return alt; + + return String(); +} + +String AccessibilityImageMapLink::title() const +{ + if (!m_areaElement) + return String(); + + const AtomicString& title = m_areaElement->getAttribute(titleAttr); + if (!title.isEmpty()) + return title; + const AtomicString& summary = m_areaElement->getAttribute(summaryAttr); + if (!summary.isEmpty()) + return summary; + + return String(); +} + +IntRect AccessibilityImageMapLink::elementRect() const +{ + if (!m_mapElement || !m_areaElement) + return IntRect(); + + RenderObject* renderer; + if (m_parent && m_parent->isAccessibilityRenderObject()) + renderer = static_cast<AccessibilityRenderObject*>(m_parent)->renderer(); + else + renderer = m_mapElement->renderer(); + + if (!renderer) + return IntRect(); + + return m_areaElement->getRect(renderer); +} + +IntSize AccessibilityImageMapLink::size() const +{ + return elementRect().size(); +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityImageMapLink.h b/WebCore/accessibility/AccessibilityImageMapLink.h new file mode 100644 index 0000000..2c27e46 --- /dev/null +++ b/WebCore/accessibility/AccessibilityImageMapLink.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityImageMapLink_h +#define AccessibilityImageMapLink_h + +#include "AccessibilityObject.h" +#include "HTMLAreaElement.h" +#include "HTMLMapElement.h" + +namespace WebCore { + +class AccessibilityImageMapLink : public AccessibilityObject { + +private: + AccessibilityImageMapLink(); +public: + static PassRefPtr<AccessibilityImageMapLink> create(); + virtual ~AccessibilityImageMapLink(); + + void setHTMLAreaElement(HTMLAreaElement* element) { m_areaElement = element; } + void setHTMLMapElement(HTMLMapElement* element) { m_mapElement = element; } + void setParent(AccessibilityObject* parent) { m_parent = parent; } + + virtual AccessibilityRole roleValue() const { return WebCoreLinkRole; } + virtual bool accessibilityIsIgnored() const { return false; } + virtual bool isEnabled() const { return true; } + + virtual AccessibilityObject* parentObject() const; + virtual Element* anchorElement() const; + virtual Element* actionElement() const; + virtual KURL url() const; + virtual bool isLink() const { return true; } + virtual String title() const; + virtual String accessibilityDescription() const; + + virtual IntSize size() const; + virtual IntRect elementRect() const; + +private: + HTMLAreaElement* m_areaElement; + HTMLMapElement* m_mapElement; + AccessibilityObject* m_parent; +}; + +} // namespace WebCore + +#endif // AccessibilityImageMapLink_h diff --git a/WebCore/accessibility/AccessibilityList.cpp b/WebCore/accessibility/AccessibilityList.cpp new file mode 100644 index 0000000..3b7c7a4 --- /dev/null +++ b/WebCore/accessibility/AccessibilityList.cpp @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityList.h" + +#include "AXObjectCache.h" +#include "HTMLNames.h" +#include "RenderObject.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityList::AccessibilityList(RenderObject* renderer) + : AccessibilityRenderObject(renderer) +{ +} + +AccessibilityList::~AccessibilityList() +{ +} + +PassRefPtr<AccessibilityList> AccessibilityList::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityList(renderer)); +} + +bool AccessibilityList::accessibilityIsIgnored() const +{ + // lists don't appear on tiger/leopard on the mac +#if ACCESSIBILITY_LISTS + return false; +#else + return true; +#endif +} + +bool AccessibilityList::isUnorderedList() const +{ + if (!m_renderer) + return false; + + Node* node = m_renderer->node(); + return node && node->hasTagName(ulTag); +} + +bool AccessibilityList::isOrderedList() const +{ + if (!m_renderer) + return false; + + Node* node = m_renderer->node(); + return node && node->hasTagName(olTag); +} + +bool AccessibilityList::isDefinitionList() const +{ + if (!m_renderer) + return false; + + Node* node = m_renderer->node(); + return node && node->hasTagName(dlTag); +} + + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityList.h b/WebCore/accessibility/AccessibilityList.h new file mode 100644 index 0000000..89befb2 --- /dev/null +++ b/WebCore/accessibility/AccessibilityList.h @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityList_h +#define AccessibilityList_h + +#if PLATFORM(MAC) && (defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD)) +#define ACCESSIBILITY_LISTS 0 +#else +#define ACCESSIBILITY_LISTS 1 +#endif + +#include "AccessibilityRenderObject.h" + +namespace WebCore { + +class AccessibilityList : public AccessibilityRenderObject { + +private: + AccessibilityList(RenderObject*); +public: + static PassRefPtr<AccessibilityList> create(RenderObject*); + virtual ~AccessibilityList(); + + virtual bool isList() const { return true; }; + bool isUnorderedList() const; + bool isOrderedList() const; + bool isDefinitionList() const; + + virtual AccessibilityRole roleValue() const { return ListRole; } + virtual bool accessibilityIsIgnored() const; + +}; + +} // namespace WebCore + +#endif // AccessibilityList_h diff --git a/WebCore/accessibility/AccessibilityListBox.cpp b/WebCore/accessibility/AccessibilityListBox.cpp new file mode 100644 index 0000000..e38aff5 --- /dev/null +++ b/WebCore/accessibility/AccessibilityListBox.cpp @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityListBox.h" + +#include "AXObjectCache.h" +#include "AccessibilityListBoxOption.h" +#include "HitTestResult.h" +#include "HTMLNames.h" +#include "HTMLSelectElement.h" +#include "RenderListBox.h" +#include "RenderObject.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityListBox::AccessibilityListBox(RenderObject* renderer) + : AccessibilityRenderObject(renderer) +{ +} + +AccessibilityListBox::~AccessibilityListBox() +{ +} + +PassRefPtr<AccessibilityListBox> AccessibilityListBox::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityListBox(renderer)); +} + +bool AccessibilityListBox::canSetSelectedChildrenAttribute() const +{ + Node* selectNode = m_renderer->node(); + if (!selectNode) + return false; + + return !static_cast<HTMLSelectElement*>(selectNode)->disabled(); +} + +void AccessibilityListBox::addChildren() +{ + Node* selectNode = m_renderer->node(); + if (!selectNode) + return; + + m_haveChildren = true; + + const Vector<Element*>& listItems = static_cast<HTMLSelectElement*>(selectNode)->listItems(); + unsigned length = listItems.size(); + for (unsigned i = 0; i < length; i++) { + // The cast to HTMLElement below is safe because the only other possible listItem type + // would be a WMLElement, but WML builds don't use accessbility features at all. + AccessibilityObject* listOption = listBoxOptionAccessibilityObject(static_cast<HTMLElement*>(listItems[i])); + if (listOption) + m_children.append(listOption); + } +} + +void AccessibilityListBox::setSelectedChildren(AccessibilityChildrenVector& children) +{ + if (!canSetSelectedChildrenAttribute()) + return; + + Node* selectNode = m_renderer->node(); + if (!selectNode) + return; + + // disable any selected options + unsigned length = m_children.size(); + for (unsigned i = 0; i < length; i++) { + AccessibilityListBoxOption* listBoxOption = static_cast<AccessibilityListBoxOption*>(m_children[i].get()); + if (listBoxOption->isSelected()) + listBoxOption->setSelected(false); + } + + length = children.size(); + for (unsigned i = 0; i < length; i++) { + AccessibilityObject* obj = children[i].get(); + if (obj->roleValue() != ListBoxOptionRole) + continue; + + static_cast<AccessibilityListBoxOption*>(obj)->setSelected(true); + } +} + +void AccessibilityListBox::selectedChildren(AccessibilityChildrenVector& result) +{ + ASSERT(result.isEmpty()); + + if (!hasChildren()) + addChildren(); + + unsigned length = m_children.size(); + for (unsigned i = 0; i < length; i++) { + if (static_cast<AccessibilityListBoxOption*>(m_children[i].get())->isSelected()) + result.append(m_children[i]); + } +} + +void AccessibilityListBox::visibleChildren(AccessibilityChildrenVector& result) +{ + ASSERT(result.isEmpty()); + + if (!hasChildren()) + addChildren(); + + unsigned length = m_children.size(); + for (unsigned i = 0; i < length; i++) { + if (static_cast<RenderListBox*>(m_renderer)->listIndexIsVisible(i)) + result.append(m_children[i]); + } +} + +AccessibilityObject* AccessibilityListBox::listBoxOptionAccessibilityObject(HTMLElement* element) const +{ + // skip hr elements + if (!element || element->hasTagName(hrTag)) + return 0; + + AccessibilityObject* listBoxObject = m_renderer->document()->axObjectCache()->getOrCreate(ListBoxOptionRole); + static_cast<AccessibilityListBoxOption*>(listBoxObject)->setHTMLElement(element); + + return listBoxObject; +} + +AccessibilityObject* AccessibilityListBox::doAccessibilityHitTest(const IntPoint& point) const +{ + // the internal HTMLSelectElement methods for returning a listbox option at a point + // ignore optgroup elements. + if (!m_renderer) + return 0; + + Node* node = m_renderer->node(); + if (!node) + return 0; + + IntRect parentRect = boundingBoxRect(); + + const Vector<Element*>& listItems = static_cast<HTMLSelectElement*>(node)->listItems(); + unsigned length = listItems.size(); + for (unsigned i = 0; i < length; i++) { + IntRect rect = static_cast<RenderListBox*>(m_renderer)->itemBoundingBoxRect(parentRect.x(), parentRect.y(), i); + // The cast to HTMLElement below is safe because the only other possible listItem type + // would be a WMLElement, but WML builds don't use accessbility features at all. + if (rect.contains(point)) + return listBoxOptionAccessibilityObject(static_cast<HTMLElement*>(listItems[i])); + } + + return axObjectCache()->getOrCreate(m_renderer); +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityListBox.h b/WebCore/accessibility/AccessibilityListBox.h new file mode 100644 index 0000000..3f3352d --- /dev/null +++ b/WebCore/accessibility/AccessibilityListBox.h @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityListBox_h +#define AccessibilityListBox_h + +#include "AccessibilityObject.h" +#include "AccessibilityRenderObject.h" + +namespace WebCore { + +class AccessibilityListBox : public AccessibilityRenderObject { + +private: + AccessibilityListBox(RenderObject*); +public: + static PassRefPtr<AccessibilityListBox> create(RenderObject*); + virtual ~AccessibilityListBox(); + + virtual AccessibilityObject* doAccessibilityHitTest(const IntPoint&) const; + virtual bool isListBox() const { return true; }; + + virtual bool canSetFocusAttribute() const { return true; } + virtual bool canSetSelectedChildrenAttribute() const; + void setSelectedChildren(AccessibilityChildrenVector&); + virtual AccessibilityRole roleValue() const { return ListBoxRole; } + + virtual bool accessibilityIsIgnored() const { return false; } + + virtual void selectedChildren(AccessibilityChildrenVector&); + virtual void visibleChildren(AccessibilityChildrenVector&); + + virtual void addChildren(); + +private: + AccessibilityObject* listBoxOptionAccessibilityObject(HTMLElement*) const; +}; + +} // namespace WebCore + +#endif // AccessibilityListBox_h diff --git a/WebCore/accessibility/AccessibilityListBoxOption.cpp b/WebCore/accessibility/AccessibilityListBoxOption.cpp new file mode 100644 index 0000000..a5cd5da --- /dev/null +++ b/WebCore/accessibility/AccessibilityListBoxOption.cpp @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityListBoxOption.h" + +#include "AXObjectCache.h" +#include "AccessibilityListBox.h" +#include "Element.h" +#include "HTMLElement.h" +#include "HTMLNames.h" +#include "HTMLOptionElement.h" +#include "HTMLOptGroupElement.h" +#include "HTMLSelectElement.h" +#include "IntRect.h" +#include "RenderObject.h" +#include "RenderListBox.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityListBoxOption::AccessibilityListBoxOption() + : m_optionElement(0) +{ +} + +AccessibilityListBoxOption::~AccessibilityListBoxOption() +{ +} + +PassRefPtr<AccessibilityListBoxOption> AccessibilityListBoxOption::create() +{ + return adoptRef(new AccessibilityListBoxOption()); +} + +bool AccessibilityListBoxOption::isEnabled() const +{ + if (!m_optionElement) + return false; + + if (m_optionElement->hasTagName(optgroupTag)) + return false; + + return true; +} + +bool AccessibilityListBoxOption::isSelected() const +{ + if (!m_optionElement) + return false; + + if (!m_optionElement->hasTagName(optionTag)) + return false; + + return static_cast<HTMLOptionElement*>(m_optionElement)->selected(); +} + +IntRect AccessibilityListBoxOption::elementRect() const +{ + IntRect rect; + if (!m_optionElement) + return rect; + + HTMLSelectElement* listBoxParentNode = listBoxOptionParentNode(); + if (!listBoxParentNode) + return rect; + + RenderObject* listBoxRenderer = listBoxParentNode->renderer(); + if (!listBoxRenderer) + return rect; + + IntRect parentRect = listBoxRenderer->document()->axObjectCache()->getOrCreate(listBoxRenderer)->boundingBoxRect(); + int index = listBoxOptionIndex(); + if (index != -1) + rect = static_cast<RenderListBox*>(listBoxRenderer)->itemBoundingBoxRect(parentRect.x(), parentRect.y(), index); + + return rect; +} + +bool AccessibilityListBoxOption::canSetSelectedAttribute() const +{ + if (!m_optionElement) + return false; + + if (!m_optionElement->hasTagName(optionTag)) + return false; + + if (m_optionElement->disabled()) + return false; + + HTMLSelectElement* selectElement = listBoxOptionParentNode(); + if (selectElement && selectElement->disabled()) + return false; + + return true; +} + +String AccessibilityListBoxOption::stringValue() const +{ + if (!m_optionElement) + return String(); + + if (m_optionElement->hasTagName(optionTag)) + return static_cast<HTMLOptionElement*>(m_optionElement)->text(); + + if (m_optionElement->hasTagName(optgroupTag)) + return static_cast<HTMLOptGroupElement*>(m_optionElement)->groupLabelText(); + + return String(); +} + +IntSize AccessibilityListBoxOption::size() const +{ + return elementRect().size(); +} + +Element* AccessibilityListBoxOption::actionElement() const +{ + return m_optionElement; +} + +AccessibilityObject* AccessibilityListBoxOption::parentObject() const +{ + HTMLSelectElement* parentNode = listBoxOptionParentNode(); + if (!parentNode) + return 0; + + return m_optionElement->document()->axObjectCache()->getOrCreate(parentNode->renderer()); +} + +void AccessibilityListBoxOption::setSelected(bool selected) +{ + HTMLSelectElement* selectElement = listBoxOptionParentNode(); + if (!selectElement) + return; + + if (!canSetSelectedAttribute()) + return; + + bool isOptionSelected = isSelected(); + if ((isOptionSelected && selected) || (!isOptionSelected && !selected)) + return; + + selectElement->accessKeySetSelectedIndex(listBoxOptionIndex()); +} + +HTMLSelectElement* AccessibilityListBoxOption::listBoxOptionParentNode() const +{ + if (!m_optionElement) + return 0; + + if (m_optionElement->hasTagName(optionTag)) + return static_cast<HTMLOptionElement*>(m_optionElement)->ownerSelectElement(); + + if (m_optionElement->hasTagName(optgroupTag)) + return static_cast<HTMLOptGroupElement*>(m_optionElement)->ownerSelectElement(); + + return 0; +} + +int AccessibilityListBoxOption::listBoxOptionIndex() const +{ + if (!m_optionElement) + return -1; + + HTMLSelectElement* selectElement = listBoxOptionParentNode(); + if (!selectElement) + return -1; + + const Vector<Element*>& listItems = selectElement->listItems(); + unsigned length = listItems.size(); + for (unsigned i = 0; i < length; i++) + if (listItems[i] == m_optionElement) + return i; + + return -1; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityListBoxOption.h b/WebCore/accessibility/AccessibilityListBoxOption.h new file mode 100644 index 0000000..1b588cd --- /dev/null +++ b/WebCore/accessibility/AccessibilityListBoxOption.h @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityListBoxOption_h +#define AccessibilityListBoxOption_h + +#include "AccessibilityObject.h" +#include "HTMLElement.h" + +namespace WebCore { + +class AccessibilityListBox; +class Element; +class HTMLElement; +class HTMLSelectElement; +class String; + +class AccessibilityListBoxOption : public AccessibilityObject { + +private: + AccessibilityListBoxOption(); +public: + static PassRefPtr<AccessibilityListBoxOption> create(); + virtual ~AccessibilityListBoxOption(); + + void setHTMLElement(HTMLElement* element) { m_optionElement = element; } + + virtual AccessibilityRole roleValue() const { return ListBoxOptionRole; } + virtual bool accessibilityIsIgnored() const { return false; } + virtual bool isSelected() const; + virtual bool isEnabled() const; + virtual String stringValue() const; + virtual Element* actionElement() const; + + virtual void setSelected(bool); + virtual bool canSetSelectedAttribute() const; + + virtual IntRect elementRect() const; + virtual IntSize size() const; + virtual AccessibilityObject* parentObject() const; + bool isListBoxOption() const { return true; }; + +private: + HTMLElement* m_optionElement; + + HTMLSelectElement* listBoxOptionParentNode() const; + int listBoxOptionIndex() const; + IntRect listBoxOptionRect() const; + AccessibilityObject* listBoxOptionAccessibilityObject(HTMLElement* element) const; +}; + +} // namespace WebCore + +#endif // AccessibilityListBoxOption_h diff --git a/WebCore/accessibility/AccessibilityObject.cpp b/WebCore/accessibility/AccessibilityObject.cpp new file mode 100644 index 0000000..dccff82 --- /dev/null +++ b/WebCore/accessibility/AccessibilityObject.cpp @@ -0,0 +1,1036 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +#include "AccessibilityRenderObject.h" +#include "AXObjectCache.h" +#include "CharacterNames.h" +#include "FloatRect.h" +#include "FocusController.h" +#include "Frame.h" +#include "FrameLoader.h" +#include "LocalizedStrings.h" +#include "NodeList.h" +#include "NotImplemented.h" +#include "Page.h" +#include "RenderImage.h" +#include "RenderListMarker.h" +#include "RenderMenuList.h" +#include "RenderTextControl.h" +#include "RenderTheme.h" +#include "RenderView.h" +#include "RenderWidget.h" +#include "SelectionController.h" +#include "TextIterator.h" +#include "htmlediting.h" +#include "visible_units.h" +#include <wtf/StdLibExtras.h> + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityObject::AccessibilityObject() + : m_id(0) + , m_haveChildren(false) +#if PLATFORM(GTK) + , m_wrapper(0) +#endif +{ +} + +AccessibilityObject::~AccessibilityObject() +{ + ASSERT(isDetached()); +} + +void AccessibilityObject::detach() +{ +#if HAVE(ACCESSIBILITY) + setWrapper(0); +#endif +} + +AccessibilityObject* AccessibilityObject::firstChild() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::lastChild() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::previousSibling() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::nextSibling() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::parentObject() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::parentObjectUnignored() const +{ + AccessibilityObject* parent; + for (parent = parentObject(); parent && parent->accessibilityIsIgnored(); parent = parent->parentObject()) + ; + return parent; +} + +AccessibilityObject* AccessibilityObject::parentObjectIfExists() const +{ + return 0; +} + +int AccessibilityObject::layoutCount() const +{ + return 0; +} + +String AccessibilityObject::text() const +{ + return String(); +} + +String AccessibilityObject::helpText() const +{ + return String(); +} + +String AccessibilityObject::textUnderElement() const +{ + return String(); +} + +bool AccessibilityObject::isARIAInput(AccessibilityRole ariaRole) +{ + return ariaRole == RadioButtonRole || ariaRole == CheckBoxRole || ariaRole == TextFieldRole; +} + +bool AccessibilityObject::isARIAControl(AccessibilityRole ariaRole) +{ + return isARIAInput(ariaRole) || ariaRole == TextAreaRole || ariaRole == ButtonRole + || ariaRole == ComboBoxRole || ariaRole == SliderRole; +} + +int AccessibilityObject::intValue() const +{ + return 0; +} + +String AccessibilityObject::stringValue() const +{ + return String(); +} + +String AccessibilityObject::ariaAccessiblityName(const String&) const +{ + return String(); +} + +String AccessibilityObject::ariaLabeledByAttribute() const +{ + return String(); +} + +String AccessibilityObject::title() const +{ + return String(); +} + +String AccessibilityObject::ariaDescribedByAttribute() const +{ + return String(); +} + +String AccessibilityObject::accessibilityDescription() const +{ + return String(); +} + +IntRect AccessibilityObject::boundingBoxRect() const +{ + return IntRect(); +} + +IntRect AccessibilityObject::elementRect() const +{ + return IntRect(); +} + +IntSize AccessibilityObject::size() const +{ + return IntSize(); +} + +IntPoint AccessibilityObject::clickPoint() const +{ + IntRect rect = elementRect(); + return IntPoint(rect.x() + rect.width() / 2, rect.y() + rect.height() / 2); +} + +void AccessibilityObject::linkedUIElements(AccessibilityChildrenVector&) const +{ + return; +} + +AccessibilityObject* AccessibilityObject::titleUIElement() const +{ + return 0; +} + +int AccessibilityObject::textLength() const +{ + return 0; +} + +PassRefPtr<Range> AccessibilityObject::ariaSelectedTextDOMRange() const +{ + return 0; +} + +String AccessibilityObject::selectedText() const +{ + return String(); +} + +const AtomicString& AccessibilityObject::accessKey() const +{ + return nullAtom; +} + +VisibleSelection AccessibilityObject::selection() const +{ + return VisibleSelection(); +} + +PlainTextRange AccessibilityObject::selectedTextRange() const +{ + return PlainTextRange(); +} + +unsigned AccessibilityObject::selectionStart() const +{ + return selectedTextRange().start; +} + +unsigned AccessibilityObject::selectionEnd() const +{ + return selectedTextRange().length; +} + +void AccessibilityObject::setSelectedText(const String&) +{ + // TODO: set selected text (ReplaceSelectionCommand). <rdar://problem/4712125> + notImplemented(); +} + +void AccessibilityObject::setSelectedTextRange(const PlainTextRange&) +{ +} + +void AccessibilityObject::makeRangeVisible(const PlainTextRange&) +{ + // TODO: make range visible (scrollRectToVisible). <rdar://problem/4712101> + notImplemented(); +} + +KURL AccessibilityObject::url() const +{ + return KURL(); +} + +void AccessibilityObject::setFocused(bool) +{ +} + +void AccessibilityObject::setValue(const String&) +{ +} + +void AccessibilityObject::setSelected(bool) +{ +} + +bool AccessibilityObject::press() const +{ + Element* actionElem = actionElement(); + if (!actionElem) + return false; + if (Frame* f = actionElem->document()->frame()) + f->loader()->resetMultipleFormSubmissionProtection(); + actionElem->accessKeyAction(true); + return true; +} + +AXObjectCache* AccessibilityObject::axObjectCache() const +{ + return 0; +} + +Widget* AccessibilityObject::widget() const +{ + return 0; +} + +Widget* AccessibilityObject::widgetForAttachmentView() const +{ + return 0; +} + +Element* AccessibilityObject::anchorElement() const +{ + return 0; +} + +Element* AccessibilityObject::actionElement() const +{ + return 0; +} + +// This function is like a cross-platform version of - (WebCoreTextMarkerRange*)textMarkerRange. It returns +// a Range that we can convert to a WebCoreRange in the Obj-C file +VisiblePositionRange AccessibilityObject::visiblePositionRange() const +{ + return VisiblePositionRange(); +} + +VisiblePositionRange AccessibilityObject::visiblePositionRangeForLine(unsigned) const +{ + return VisiblePositionRange(); +} + +VisiblePosition AccessibilityObject::visiblePositionForIndex(int) const +{ + return VisiblePosition(); +} + +int AccessibilityObject::indexForVisiblePosition(const VisiblePosition&) const +{ + return 0; +} + +VisiblePositionRange AccessibilityObject::visiblePositionRangeForUnorderedPositions(const VisiblePosition& visiblePos1, const VisiblePosition& visiblePos2) const +{ + if (visiblePos1.isNull() || visiblePos2.isNull()) + return VisiblePositionRange(); + + VisiblePosition startPos; + VisiblePosition endPos; + bool alreadyInOrder; + + // upstream is ordered before downstream for the same position + if (visiblePos1 == visiblePos2 && visiblePos2.affinity() == UPSTREAM) + alreadyInOrder = false; + + // use selection order to see if the positions are in order + else + alreadyInOrder = VisibleSelection(visiblePos1, visiblePos2).isBaseFirst(); + + if (alreadyInOrder) { + startPos = visiblePos1; + endPos = visiblePos2; + } else { + startPos = visiblePos2; + endPos = visiblePos1; + } + + return VisiblePositionRange(startPos, endPos); +} + +VisiblePositionRange AccessibilityObject::positionOfLeftWord(const VisiblePosition& visiblePos) const +{ + VisiblePosition startPosition = startOfWord(visiblePos, LeftWordIfOnBoundary); + VisiblePosition endPosition = endOfWord(startPosition); + return VisiblePositionRange(startPosition, endPosition); +} + +VisiblePositionRange AccessibilityObject::positionOfRightWord(const VisiblePosition& visiblePos) const +{ + VisiblePosition startPosition = startOfWord(visiblePos, RightWordIfOnBoundary); + VisiblePosition endPosition = endOfWord(startPosition); + return VisiblePositionRange(startPosition, endPosition); +} + +static VisiblePosition updateAXLineStartForVisiblePosition(const VisiblePosition& visiblePosition) +{ + // A line in the accessibility sense should include floating objects, such as aligned image, as part of a line. + // So let's update the position to include that. + VisiblePosition tempPosition; + VisiblePosition startPosition = visiblePosition; + Position p; + RenderObject* renderer; + while (true) { + tempPosition = startPosition.previous(); + if (tempPosition.isNull()) + break; + p = tempPosition.deepEquivalent(); + if (!p.node()) + break; + renderer = p.node()->renderer(); + if (!renderer || (renderer->isRenderBlock() && !p.deprecatedEditingOffset())) + break; + InlineBox* box; + int ignoredCaretOffset; + p.getInlineBoxAndOffset(tempPosition.affinity(), box, ignoredCaretOffset); + if (box) + break; + startPosition = tempPosition; + } + + return startPosition; +} + +VisiblePositionRange AccessibilityObject::leftLineVisiblePositionRange(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePositionRange(); + + // make a caret selection for the position before marker position (to make sure + // we move off of a line start) + VisiblePosition prevVisiblePos = visiblePos.previous(); + if (prevVisiblePos.isNull()) + return VisiblePositionRange(); + + VisiblePosition startPosition = startOfLine(prevVisiblePos); + + // keep searching for a valid line start position. Unless the VisiblePosition is at the very beginning, there should + // always be a valid line range. However, startOfLine will return null for position next to a floating object, + // since floating object doesn't really belong to any line. + // This check will reposition the marker before the floating object, to ensure we get a line start. + if (startPosition.isNull()) { + while (startPosition.isNull() && prevVisiblePos.isNotNull()) { + prevVisiblePos = prevVisiblePos.previous(); + startPosition = startOfLine(prevVisiblePos); + } + } else + startPosition = updateAXLineStartForVisiblePosition(startPosition); + + VisiblePosition endPosition = endOfLine(prevVisiblePos); + return VisiblePositionRange(startPosition, endPosition); +} + +VisiblePositionRange AccessibilityObject::rightLineVisiblePositionRange(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePositionRange(); + + // make sure we move off of a line end + VisiblePosition nextVisiblePos = visiblePos.next(); + if (nextVisiblePos.isNull()) + return VisiblePositionRange(); + + VisiblePosition startPosition = startOfLine(nextVisiblePos); + + // fetch for a valid line start position + if (startPosition.isNull() ) { + startPosition = visiblePos; + nextVisiblePos = nextVisiblePos.next(); + } else + startPosition = updateAXLineStartForVisiblePosition(startPosition); + + VisiblePosition endPosition = endOfLine(nextVisiblePos); + + // as long as the position hasn't reached the end of the doc, keep searching for a valid line end position + // Unless the VisiblePosition is at the very end, there should always be a valid line range. However, endOfLine will + // return null for position by a floating object, since floating object doesn't really belong to any line. + // This check will reposition the marker after the floating object, to ensure we get a line end. + while (endPosition.isNull() && nextVisiblePos.isNotNull()) { + nextVisiblePos = nextVisiblePos.next(); + endPosition = endOfLine(nextVisiblePos); + } + + return VisiblePositionRange(startPosition, endPosition); +} + +VisiblePositionRange AccessibilityObject::sentenceForPosition(const VisiblePosition& visiblePos) const +{ + // FIXME: FO 2 IMPLEMENT (currently returns incorrect answer) + // Related? <rdar://problem/3927736> Text selection broken in 8A336 + VisiblePosition startPosition = startOfSentence(visiblePos); + VisiblePosition endPosition = endOfSentence(startPosition); + return VisiblePositionRange(startPosition, endPosition); +} + +VisiblePositionRange AccessibilityObject::paragraphForPosition(const VisiblePosition& visiblePos) const +{ + VisiblePosition startPosition = startOfParagraph(visiblePos); + VisiblePosition endPosition = endOfParagraph(startPosition); + return VisiblePositionRange(startPosition, endPosition); +} + +static VisiblePosition startOfStyleRange(const VisiblePosition visiblePos) +{ + RenderObject* renderer = visiblePos.deepEquivalent().node()->renderer(); + RenderObject* startRenderer = renderer; + RenderStyle* style = renderer->style(); + + // traverse backward by renderer to look for style change + for (RenderObject* r = renderer->previousInPreOrder(); r; r = r->previousInPreOrder()) { + // skip non-leaf nodes + if (r->firstChild()) + continue; + + // stop at style change + if (r->style() != style) + break; + + // remember match + startRenderer = r; + } + + return VisiblePosition(startRenderer->node(), 0, VP_DEFAULT_AFFINITY); +} + +static VisiblePosition endOfStyleRange(const VisiblePosition& visiblePos) +{ + RenderObject* renderer = visiblePos.deepEquivalent().node()->renderer(); + RenderObject* endRenderer = renderer; + RenderStyle* style = renderer->style(); + + // traverse forward by renderer to look for style change + for (RenderObject* r = renderer->nextInPreOrder(); r; r = r->nextInPreOrder()) { + // skip non-leaf nodes + if (r->firstChild()) + continue; + + // stop at style change + if (r->style() != style) + break; + + // remember match + endRenderer = r; + } + + return lastDeepEditingPositionForNode(endRenderer->node()); +} + +VisiblePositionRange AccessibilityObject::styleRangeForPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePositionRange(); + + return VisiblePositionRange(startOfStyleRange(visiblePos), endOfStyleRange(visiblePos)); +} + +// NOTE: Consider providing this utility method as AX API +VisiblePositionRange AccessibilityObject::visiblePositionRangeForRange(const PlainTextRange& range) const +{ + if (range.start + range.length > text().length()) + return VisiblePositionRange(); + + VisiblePosition startPosition = visiblePositionForIndex(range.start); + startPosition.setAffinity(DOWNSTREAM); + VisiblePosition endPosition = visiblePositionForIndex(range.start + range.length); + return VisiblePositionRange(startPosition, endPosition); +} + +static bool replacedNodeNeedsCharacter(Node* replacedNode) +{ + // we should always be given a rendered node and a replaced node, but be safe + // replaced nodes are either attachments (widgets) or images + if (!replacedNode || !replacedNode->renderer() || !replacedNode->renderer()->isReplaced() || replacedNode->isTextNode()) { + return false; + } + + // create an AX object, but skip it if it is not supposed to be seen + AccessibilityObject* object = replacedNode->renderer()->document()->axObjectCache()->getOrCreate(replacedNode->renderer()); + if (object->accessibilityIsIgnored()) + return false; + + return true; +} + +String AccessibilityObject::stringForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const +{ + if (visiblePositionRange.isNull()) + return String(); + + Vector<UChar> resultVector; + RefPtr<Range> range = makeRange(visiblePositionRange.start, visiblePositionRange.end); + for (TextIterator it(range.get()); !it.atEnd(); it.advance()) { + // non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX) + if (it.length() != 0) { + resultVector.append(it.characters(), it.length()); + } else { + // locate the node and starting offset for this replaced range + int exception = 0; + Node* node = it.range()->startContainer(exception); + ASSERT(node == it.range()->endContainer(exception)); + int offset = it.range()->startOffset(exception); + + if (replacedNodeNeedsCharacter(node->childNode(offset))) { + resultVector.append(objectReplacementCharacter); + } + } + } + + return String::adopt(resultVector); +} + +IntRect AccessibilityObject::boundsForVisiblePositionRange(const VisiblePositionRange&) const +{ + return IntRect(); +} + +int AccessibilityObject::lengthForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const +{ + // FIXME: Multi-byte support + if (visiblePositionRange.isNull()) + return -1; + + int length = 0; + RefPtr<Range> range = makeRange(visiblePositionRange.start, visiblePositionRange.end); + for (TextIterator it(range.get()); !it.atEnd(); it.advance()) { + // non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX) + if (it.length() != 0) { + length += it.length(); + } else { + // locate the node and starting offset for this replaced range + int exception = 0; + Node* node = it.range()->startContainer(exception); + ASSERT(node == it.range()->endContainer(exception)); + int offset = it.range()->startOffset(exception); + + if (replacedNodeNeedsCharacter(node->childNode(offset))) + length++; + } + } + + return length; +} + +void AccessibilityObject::setSelectedVisiblePositionRange(const VisiblePositionRange&) const +{ +} + +VisiblePosition AccessibilityObject::visiblePositionForPoint(const IntPoint&) const +{ + return VisiblePosition(); +} + +VisiblePosition AccessibilityObject::nextVisiblePosition(const VisiblePosition& visiblePos) const +{ + return visiblePos.next(); +} + +VisiblePosition AccessibilityObject::previousVisiblePosition(const VisiblePosition& visiblePos) const +{ + return visiblePos.previous(); +} + +VisiblePosition AccessibilityObject::nextWordEnd(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a word end + VisiblePosition nextVisiblePos = visiblePos.next(); + if (nextVisiblePos.isNull()) + return VisiblePosition(); + + return endOfWord(nextVisiblePos, LeftWordIfOnBoundary); +} + +VisiblePosition AccessibilityObject::previousWordStart(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a word start + VisiblePosition prevVisiblePos = visiblePos.previous(); + if (prevVisiblePos.isNull()) + return VisiblePosition(); + + return startOfWord(prevVisiblePos, RightWordIfOnBoundary); +} + +VisiblePosition AccessibilityObject::nextLineEndPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // to make sure we move off of a line end + VisiblePosition nextVisiblePos = visiblePos.next(); + if (nextVisiblePos.isNull()) + return VisiblePosition(); + + VisiblePosition endPosition = endOfLine(nextVisiblePos); + + // as long as the position hasn't reached the end of the doc, keep searching for a valid line end position + // There are cases like when the position is next to a floating object that'll return null for end of line. This code will avoid returning null. + while (endPosition.isNull() && nextVisiblePos.isNotNull()) { + nextVisiblePos = nextVisiblePos.next(); + endPosition = endOfLine(nextVisiblePos); + } + + return endPosition; +} + +VisiblePosition AccessibilityObject::previousLineStartPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a line start + VisiblePosition prevVisiblePos = visiblePos.previous(); + if (prevVisiblePos.isNull()) + return VisiblePosition(); + + VisiblePosition startPosition = startOfLine(prevVisiblePos); + + // as long as the position hasn't reached the beginning of the doc, keep searching for a valid line start position + // There are cases like when the position is next to a floating object that'll return null for start of line. This code will avoid returning null. + if (startPosition.isNull()) { + while (startPosition.isNull() && prevVisiblePos.isNotNull()) { + prevVisiblePos = prevVisiblePos.previous(); + startPosition = startOfLine(prevVisiblePos); + } + } else + startPosition = updateAXLineStartForVisiblePosition(startPosition); + + return startPosition; +} + +VisiblePosition AccessibilityObject::nextSentenceEndPosition(const VisiblePosition& visiblePos) const +{ + // FIXME: FO 2 IMPLEMENT (currently returns incorrect answer) + // Related? <rdar://problem/3927736> Text selection broken in 8A336 + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a sentence end + VisiblePosition nextVisiblePos = visiblePos.next(); + if (nextVisiblePos.isNull()) + return VisiblePosition(); + + // an empty line is considered a sentence. If it's skipped, then the sentence parser will not + // see this empty line. Instead, return the end position of the empty line. + VisiblePosition endPosition; + + String lineString = plainText(makeRange(startOfLine(nextVisiblePos), endOfLine(nextVisiblePos)).get()); + if (lineString.isEmpty()) + endPosition = nextVisiblePos; + else + endPosition = endOfSentence(nextVisiblePos); + + return endPosition; +} + +VisiblePosition AccessibilityObject::previousSentenceStartPosition(const VisiblePosition& visiblePos) const +{ + // FIXME: FO 2 IMPLEMENT (currently returns incorrect answer) + // Related? <rdar://problem/3927736> Text selection broken in 8A336 + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a sentence start + VisiblePosition previousVisiblePos = visiblePos.previous(); + if (previousVisiblePos.isNull()) + return VisiblePosition(); + + // treat empty line as a separate sentence. + VisiblePosition startPosition; + + String lineString = plainText(makeRange(startOfLine(previousVisiblePos), endOfLine(previousVisiblePos)).get()); + if (lineString.isEmpty()) + startPosition = previousVisiblePos; + else + startPosition = startOfSentence(previousVisiblePos); + + return startPosition; +} + +VisiblePosition AccessibilityObject::nextParagraphEndPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a paragraph end + VisiblePosition nextPos = visiblePos.next(); + if (nextPos.isNull()) + return VisiblePosition(); + + return endOfParagraph(nextPos); +} + +VisiblePosition AccessibilityObject::previousParagraphStartPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return VisiblePosition(); + + // make sure we move off of a paragraph start + VisiblePosition previousPos = visiblePos.previous(); + if (previousPos.isNull()) + return VisiblePosition(); + + return startOfParagraph(previousPos); +} + +// NOTE: Consider providing this utility method as AX API +VisiblePosition AccessibilityObject::visiblePositionForIndex(unsigned, bool) const +{ + return VisiblePosition(); +} + +AccessibilityObject* AccessibilityObject::accessibilityObjectForPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return 0; + + RenderObject* obj = visiblePos.deepEquivalent().node()->renderer(); + if (!obj) + return 0; + + return obj->document()->axObjectCache()->getOrCreate(obj); +} + +int AccessibilityObject::lineForPosition(const VisiblePosition& visiblePos) const +{ + if (visiblePos.isNull()) + return 0; + + unsigned lineCount = 0; + VisiblePosition currentVisiblePos = visiblePos; + VisiblePosition savedVisiblePos; + + // move up until we get to the top + // FIXME: This only takes us to the top of the rootEditableElement, not the top of the + // top document. + while (currentVisiblePos.isNotNull() && !(inSameLine(currentVisiblePos, savedVisiblePos))) { + ++lineCount; + savedVisiblePos = currentVisiblePos; + VisiblePosition prevVisiblePos = previousLinePosition(currentVisiblePos, 0); + currentVisiblePos = prevVisiblePos; + } + + return lineCount - 1; +} + +// NOTE: Consider providing this utility method as AX API +PlainTextRange AccessibilityObject::plainTextRangeForVisiblePositionRange(const VisiblePositionRange& positionRange) const +{ + int index1 = index(positionRange.start); + int index2 = index(positionRange.end); + if (index1 < 0 || index2 < 0 || index1 > index2) + return PlainTextRange(); + + return PlainTextRange(index1, index2 - index1); +} + +// NOTE: Consider providing this utility method as AX API +int AccessibilityObject::index(const VisiblePosition&) const +{ + return -1; +} + +// Given a line number, the range of characters of the text associated with this accessibility +// object that contains the line number. +PlainTextRange AccessibilityObject::doAXRangeForLine(unsigned) const +{ + return PlainTextRange(); +} + +// The composed character range in the text associated with this accessibility object that +// is specified by the given screen coordinates. This parameterized attribute returns the +// complete range of characters (including surrogate pairs of multi-byte glyphs) at the given +// screen coordinates. +// NOTE: This varies from AppKit when the point is below the last line. AppKit returns an +// an error in that case. We return textControl->text().length(), 1. Does this matter? +PlainTextRange AccessibilityObject::doAXRangeForPosition(const IntPoint& point) const +{ + int i = index(visiblePositionForPoint(point)); + if (i < 0) + return PlainTextRange(); + + return PlainTextRange(i, 1); +} + +// The composed character range in the text associated with this accessibility object that +// is specified by the given index value. This parameterized attribute returns the complete +// range of characters (including surrogate pairs of multi-byte glyphs) at the given index. +PlainTextRange AccessibilityObject::doAXRangeForIndex(unsigned) const +{ + return PlainTextRange(); +} + +// Given a character index, the range of text associated with this accessibility object +// over which the style in effect at that character index applies. +PlainTextRange AccessibilityObject::doAXStyleRangeForIndex(unsigned index) const +{ + VisiblePositionRange range = styleRangeForPosition(visiblePositionForIndex(index, false)); + return plainTextRangeForVisiblePositionRange(range); +} + +// A substring of the text associated with this accessibility object that is +// specified by the given character range. +String AccessibilityObject::doAXStringForRange(const PlainTextRange&) const +{ + return String(); +} + +// The bounding rectangle of the text associated with this accessibility object that is +// specified by the given range. This is the bounding rectangle a sighted user would see +// on the display screen, in pixels. +IntRect AccessibilityObject::doAXBoundsForRange(const PlainTextRange&) const +{ + return IntRect(); +} + +// Given an indexed character, the line number of the text associated with this accessibility +// object that contains the character. +unsigned AccessibilityObject::doAXLineForIndex(unsigned index) +{ + return lineForPosition(visiblePositionForIndex(index, false)); +} + +FrameView* AccessibilityObject::documentFrameView() const +{ + const AccessibilityObject* object = this; + while (object && !object->isAccessibilityRenderObject()) + object = object->parentObject(); + + if (!object) + return 0; + + return object->documentFrameView(); +} + +AccessibilityObject* AccessibilityObject::doAccessibilityHitTest(const IntPoint&) const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::focusedUIElement() const +{ + return 0; +} + +AccessibilityObject* AccessibilityObject::observableObject() const +{ + return 0; +} + +AccessibilityRole AccessibilityObject::roleValue() const +{ + return UnknownRole; +} + +AccessibilityRole AccessibilityObject::ariaRoleAttribute() const +{ + return UnknownRole; +} + +bool AccessibilityObject::isPresentationalChildOfAriaRole() const +{ + return false; +} + +bool AccessibilityObject::ariaRoleHasPresentationalChildren() const +{ + return false; +} + +void AccessibilityObject::clearChildren() +{ + m_haveChildren = false; + m_children.clear(); +} + +void AccessibilityObject::childrenChanged() +{ + return; +} + +void AccessibilityObject::addChildren() +{ +} + +void AccessibilityObject::selectedChildren(AccessibilityChildrenVector&) +{ +} + +void AccessibilityObject::visibleChildren(AccessibilityChildrenVector&) +{ +} + +unsigned AccessibilityObject::axObjectID() const +{ + return m_id; +} + +void AccessibilityObject::setAXObjectID(unsigned axObjectID) +{ + m_id = axObjectID; +} + +const String& AccessibilityObject::actionVerb() const +{ + // FIXME: Need to add verbs for select elements. + DEFINE_STATIC_LOCAL(const String, buttonAction, (AXButtonActionVerb())); + DEFINE_STATIC_LOCAL(const String, textFieldAction, (AXTextFieldActionVerb())); + DEFINE_STATIC_LOCAL(const String, radioButtonAction, (AXRadioButtonActionVerb())); + DEFINE_STATIC_LOCAL(const String, checkedCheckBoxAction, (AXCheckedCheckBoxActionVerb())); + DEFINE_STATIC_LOCAL(const String, uncheckedCheckBoxAction, (AXUncheckedCheckBoxActionVerb())); + DEFINE_STATIC_LOCAL(const String, linkAction, (AXLinkActionVerb())); + DEFINE_STATIC_LOCAL(const String, noAction, ()); + + switch (roleValue()) { + case ButtonRole: + return buttonAction; + case TextFieldRole: + case TextAreaRole: + return textFieldAction; + case RadioButtonRole: + return radioButtonAction; + case CheckBoxRole: + return isChecked() ? checkedCheckBoxAction : uncheckedCheckBoxAction; + case LinkRole: + case WebCoreLinkRole: + return linkAction; + default: + return noAction; + } +} + +void AccessibilityObject::updateBackingStore() +{ +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityObject.h b/WebCore/accessibility/AccessibilityObject.h new file mode 100644 index 0000000..f71be99 --- /dev/null +++ b/WebCore/accessibility/AccessibilityObject.h @@ -0,0 +1,432 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * Copyright (C) 2008 Nuanti Ltd. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityObject_h +#define AccessibilityObject_h + +#include "VisiblePosition.h" +#include <wtf/Platform.h> +#include <wtf/RefPtr.h> +#include <wtf/Vector.h> + +#if PLATFORM(MAC) +#include <wtf/RetainPtr.h> +#elif PLATFORM(WIN) +#include "AccessibilityObjectWrapperWin.h" +#include "COMPtr.h" +#elif PLATFORM(CHROMIUM) +#include "AccessibilityObjectWrapper.h" +#endif + +typedef struct _NSRange NSRange; + +#ifdef __OBJC__ +@class AccessibilityObjectWrapper; +@class NSArray; +@class NSAttributedString; +@class NSData; +@class NSMutableAttributedString; +@class NSString; +@class NSValue; +@class NSView; +#else +class NSArray; +class NSAttributedString; +class NSData; +class NSMutableAttributedString; +class NSString; +class NSValue; +class NSView; +#if PLATFORM(GTK) +typedef struct _AtkObject AtkObject; +typedef struct _AtkObject AccessibilityObjectWrapper; +#else +class AccessibilityObjectWrapper; +#endif +#endif + +namespace WebCore { + +class AXObjectCache; +class Element; +class Frame; +class FrameView; +class HTMLAnchorElement; +class HTMLAreaElement; +class IntPoint; +class IntSize; +class Node; +class RenderObject; +class VisibleSelection; +class String; +class Widget; + +enum AccessibilityRole { + UnknownRole = 1, + ButtonRole, + RadioButtonRole, + CheckBoxRole, + SliderRole, + TabGroupRole, + TextFieldRole, + StaticTextRole, + TextAreaRole, + ScrollAreaRole, + PopUpButtonRole, + MenuButtonRole, + TableRole, + ApplicationRole, + GroupRole, + RadioGroupRole, + ListRole, + ScrollBarRole, + ValueIndicatorRole, + ImageRole, + MenuBarRole, + MenuRole, + MenuItemRole, + ColumnRole, + RowRole, + ToolbarRole, + BusyIndicatorRole, + ProgressIndicatorRole, + WindowRole, + DrawerRole, + SystemWideRole, + OutlineRole, + IncrementorRole, + BrowserRole, + ComboBoxRole, + SplitGroupRole, + SplitterRole, + ColorWellRole, + GrowAreaRole, + SheetRole, + HelpTagRole, + MatteRole, + RulerRole, + RulerMarkerRole, + LinkRole, + DisclosureTriangleRole, + GridRole, + CellRole, + ColumnHeaderRole, + RowHeaderRole, + // AppKit includes SortButtonRole but it is misnamed and really a subrole of ButtonRole so we do not include it here. + + // WebCore-specific roles + WebCoreLinkRole, + ImageMapLinkRole, + ImageMapRole, + ListMarkerRole, + WebAreaRole, + HeadingRole, + ListBoxRole, + ListBoxOptionRole, + TableHeaderContainerRole, + DefinitionListTermRole, + DefinitionListDefinitionRole +}; + +struct VisiblePositionRange { + + VisiblePosition start; + VisiblePosition end; + + VisiblePositionRange() {} + + VisiblePositionRange(const VisiblePosition& s, const VisiblePosition& e) + : start(s) + , end(e) + { } + + bool isNull() const { return start.isNull() || end.isNull(); } +}; + +struct PlainTextRange { + + unsigned start; + unsigned length; + + PlainTextRange() + : start(0) + , length(0) + { } + + PlainTextRange(unsigned s, unsigned l) + : start(s) + , length(l) + { } + + bool isNull() const { return start == 0 && length == 0; } +}; + +class AccessibilityObject : public RefCounted<AccessibilityObject> { +protected: + AccessibilityObject(); +public: + virtual ~AccessibilityObject(); + + typedef Vector<RefPtr<AccessibilityObject> > AccessibilityChildrenVector; + + virtual bool isAccessibilityRenderObject() const { return false; }; + virtual bool isAnchor() const { return false; }; + virtual bool isAttachment() const { return false; }; + virtual bool isHeading() const { return false; }; + virtual bool isLink() const { return false; }; + virtual bool isImage() const { return false; }; + virtual bool isNativeImage() const { return false; }; + virtual bool isImageButton() const { return false; }; + virtual bool isPasswordField() const { return false; }; + virtual bool isTextControl() const { return false; }; + virtual bool isNativeTextControl() const { return false; }; + virtual bool isWebArea() const { return false; }; + virtual bool isCheckboxOrRadio() const { return false; }; + virtual bool isListBox() const { return roleValue() == ListBoxRole; }; + virtual bool isMenuRelated() const { return false; } + virtual bool isMenu() const { return false; } + virtual bool isMenuBar() const { return false; } + virtual bool isMenuButton() const { return false; } + virtual bool isMenuItem() const { return false; } + virtual bool isFileUploadButton() const { return false; }; + virtual bool isInputImage() const { return false; } + virtual bool isProgressIndicator() const { return false; }; + virtual bool isSlider() const { return false; }; + virtual bool isControl() const { return false; }; + virtual bool isList() const { return false; }; + virtual bool isDataTable() const { return false; }; + virtual bool isTableRow() const { return false; }; + virtual bool isTableColumn() const { return false; }; + virtual bool isTableCell() const { return false; }; + virtual bool isFieldset() const { return false; }; + virtual bool isGroup() const { return false; }; + + virtual bool isChecked() const { return false; }; + virtual bool isEnabled() const { return false; }; + virtual bool isSelected() const { return false; }; + virtual bool isFocused() const { return false; }; + virtual bool isHovered() const { return false; }; + virtual bool isIndeterminate() const { return false; }; + virtual bool isLoaded() const { return false; }; + virtual bool isMultiSelect() const { return false; }; + virtual bool isOffScreen() const { return false; }; + virtual bool isPressed() const { return false; }; + virtual bool isReadOnly() const { return false; }; + virtual bool isVisited() const { return false; }; + + virtual bool canSetFocusAttribute() const { return false; }; + virtual bool canSetTextRangeAttributes() const { return false; }; + virtual bool canSetValueAttribute() const { return false; }; + virtual bool canSetSelectedAttribute() const { return false; } + virtual bool canSetSelectedChildrenAttribute() const { return false; } + + virtual bool hasIntValue() const { return false; }; + + bool accessibilityShouldUseUniqueId() const { return true; }; + virtual bool accessibilityIsIgnored() const { return true; }; + + virtual int intValue() const; + virtual float valueForRange() const { return 0.0f; } + virtual float maxValueForRange() const { return 0.0f; } + virtual float minValueForRange() const { return 0.0f; } + virtual int layoutCount() const; + static bool isARIAControl(AccessibilityRole); + static bool isARIAInput(AccessibilityRole); + unsigned axObjectID() const; + + virtual AccessibilityObject* doAccessibilityHitTest(const IntPoint&) const; + virtual AccessibilityObject* focusedUIElement() const; + virtual AccessibilityObject* firstChild() const; + virtual AccessibilityObject* lastChild() const; + virtual AccessibilityObject* previousSibling() const; + virtual AccessibilityObject* nextSibling() const; + virtual AccessibilityObject* parentObject() const; + virtual AccessibilityObject* parentObjectUnignored() const; + virtual AccessibilityObject* parentObjectIfExists() const; + virtual AccessibilityObject* observableObject() const; + virtual void linkedUIElements(AccessibilityChildrenVector&) const; + virtual AccessibilityObject* titleUIElement() const; + virtual bool exposesTitleUIElement() const { return true; } + virtual AccessibilityRole ariaRoleAttribute() const; + virtual bool isPresentationalChildOfAriaRole() const; + virtual bool ariaRoleHasPresentationalChildren() const; + + virtual AccessibilityRole roleValue() const; + virtual AXObjectCache* axObjectCache() const; + + virtual Element* anchorElement() const; + virtual Element* actionElement() const; + virtual IntRect boundingBoxRect() const; + virtual IntRect elementRect() const; + virtual IntSize size() const; + IntPoint clickPoint() const; + + virtual KURL url() const; + virtual PlainTextRange selectedTextRange() const; + virtual VisibleSelection selection() const; + unsigned selectionStart() const; + unsigned selectionEnd() const; + virtual String stringValue() const; + virtual String ariaAccessiblityName(const String&) const; + virtual String ariaLabeledByAttribute() const; + virtual String title() const; + virtual String ariaDescribedByAttribute() const; + virtual String accessibilityDescription() const; + virtual String helpText() const; + virtual String textUnderElement() const; + virtual String text() const; + virtual int textLength() const; + virtual PassRefPtr<Range> ariaSelectedTextDOMRange() const; + virtual String selectedText() const; + virtual const AtomicString& accessKey() const; + const String& actionVerb() const; + virtual Widget* widget() const; + virtual Widget* widgetForAttachmentView() const; + virtual Document* document() const { return 0; } + virtual FrameView* topDocumentFrameView() const { return 0; } + virtual FrameView* documentFrameView() const; + + void setAXObjectID(unsigned); + virtual void setFocused(bool); + virtual void setSelectedText(const String&); + virtual void setSelectedTextRange(const PlainTextRange&); + virtual void setValue(const String&); + virtual void setSelected(bool); + + virtual void detach(); + virtual void makeRangeVisible(const PlainTextRange&); + virtual bool press() const; + bool performDefaultAction() const { return press(); } + + virtual void childrenChanged(); + virtual const AccessibilityChildrenVector& children() { return m_children; } + virtual void addChildren(); + virtual bool canHaveChildren() const { return true; } + virtual bool hasChildren() const { return m_haveChildren; }; + virtual void selectedChildren(AccessibilityChildrenVector&); + virtual void visibleChildren(AccessibilityChildrenVector&); + virtual bool shouldFocusActiveDescendant() const { return false; } + virtual AccessibilityObject* activeDescendant() const { return 0; } + virtual void handleActiveDescendantChanged() { } + + virtual VisiblePositionRange visiblePositionRange() const; + virtual VisiblePositionRange visiblePositionRangeForLine(unsigned) const; + + VisiblePositionRange visiblePositionRangeForUnorderedPositions(const VisiblePosition&, const VisiblePosition&) const; + VisiblePositionRange positionOfLeftWord(const VisiblePosition&) const; + VisiblePositionRange positionOfRightWord(const VisiblePosition&) const; + VisiblePositionRange leftLineVisiblePositionRange(const VisiblePosition&) const; + VisiblePositionRange rightLineVisiblePositionRange(const VisiblePosition&) const; + VisiblePositionRange sentenceForPosition(const VisiblePosition&) const; + VisiblePositionRange paragraphForPosition(const VisiblePosition&) const; + VisiblePositionRange styleRangeForPosition(const VisiblePosition&) const; + VisiblePositionRange visiblePositionRangeForRange(const PlainTextRange&) const; + + String stringForVisiblePositionRange(const VisiblePositionRange&) const; + virtual IntRect boundsForVisiblePositionRange(const VisiblePositionRange&) const; + int lengthForVisiblePositionRange(const VisiblePositionRange&) const; + virtual void setSelectedVisiblePositionRange(const VisiblePositionRange&) const; + + virtual VisiblePosition visiblePositionForPoint(const IntPoint&) const; + VisiblePosition nextVisiblePosition(const VisiblePosition&) const; + VisiblePosition previousVisiblePosition(const VisiblePosition&) const; + VisiblePosition nextWordEnd(const VisiblePosition&) const; + VisiblePosition previousWordStart(const VisiblePosition&) const; + VisiblePosition nextLineEndPosition(const VisiblePosition&) const; + VisiblePosition previousLineStartPosition(const VisiblePosition&) const; + VisiblePosition nextSentenceEndPosition(const VisiblePosition&) const; + VisiblePosition previousSentenceStartPosition(const VisiblePosition&) const; + VisiblePosition nextParagraphEndPosition(const VisiblePosition&) const; + VisiblePosition previousParagraphStartPosition(const VisiblePosition&) const; + virtual VisiblePosition visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const; + + virtual VisiblePosition visiblePositionForIndex(int) const; + virtual int indexForVisiblePosition(const VisiblePosition&) const; + + AccessibilityObject* accessibilityObjectForPosition(const VisiblePosition&) const; + int lineForPosition(const VisiblePosition&) const; + PlainTextRange plainTextRangeForVisiblePositionRange(const VisiblePositionRange&) const; + virtual int index(const VisiblePosition&) const; + + virtual PlainTextRange doAXRangeForLine(unsigned) const; + PlainTextRange doAXRangeForPosition(const IntPoint&) const; + virtual PlainTextRange doAXRangeForIndex(unsigned) const; + PlainTextRange doAXStyleRangeForIndex(unsigned) const; + + virtual String doAXStringForRange(const PlainTextRange&) const; + virtual IntRect doAXBoundsForRange(const PlainTextRange&) const; + + unsigned doAXLineForIndex(unsigned); + +#if HAVE(ACCESSIBILITY) +#if PLATFORM(GTK) + AccessibilityObjectWrapper* wrapper() const; + void setWrapper(AccessibilityObjectWrapper*); +#else + AccessibilityObjectWrapper* wrapper() const { return m_wrapper.get(); } + void setWrapper(AccessibilityObjectWrapper* wrapper) + { + m_wrapper = wrapper; + } +#endif +#endif + + // a platform-specific method for determining if an attachment is ignored +#if HAVE(ACCESSIBILITY) + bool accessibilityIgnoreAttachment() const; +#else + bool accessibilityIgnoreAttachment() const { return true; } +#endif + + // allows for an AccessibilityObject to update its render tree or perform + // other operations update type operations + virtual void updateBackingStore(); + +protected: + unsigned m_id; + AccessibilityChildrenVector m_children; + mutable bool m_haveChildren; + + virtual void clearChildren(); + virtual bool isDetached() const { return true; } + +#if PLATFORM(MAC) + RetainPtr<AccessibilityObjectWrapper> m_wrapper; +#elif PLATFORM(WIN) + COMPtr<AccessibilityObjectWrapper> m_wrapper; +#elif PLATFORM(GTK) + AtkObject* m_wrapper; +#elif PLATFORM(CHROMIUM) + RefPtr<AccessibilityObjectWrapper> m_wrapper; +#endif +}; + +} // namespace WebCore + +#endif // AccessibilityObject_h diff --git a/WebCore/accessibility/AccessibilityRenderObject.cpp b/WebCore/accessibility/AccessibilityRenderObject.cpp new file mode 100644 index 0000000..8c522a1 --- /dev/null +++ b/WebCore/accessibility/AccessibilityRenderObject.cpp @@ -0,0 +1,2539 @@ +/* +* Copyright (C) 2008 Apple Inc. All rights reserved. +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions +* are met: +* +* 1. Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* 2. Redistributions in binary form must reproduce the above copyright +* notice, this list of conditions and the following disclaimer in the +* documentation and/or other materials provided with the distribution. +* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of +* its contributors may be used to endorse or promote products derived +* from this software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY +* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY +* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#include "config.h" +#include "AccessibilityRenderObject.h" + +#include "AXObjectCache.h" +#include "AccessibilityListBox.h" +#include "AccessibilityImageMapLink.h" +#include "CharacterNames.h" +#include "EventNames.h" +#include "FloatRect.h" +#include "FocusController.h" +#include "Frame.h" +#include "FrameLoader.h" +#include "HTMLAreaElement.h" +#include "HTMLFormElement.h" +#include "HTMLFrameElementBase.h" +#include "HTMLImageElement.h" +#include "HTMLInputElement.h" +#include "HTMLLabelElement.h" +#include "HTMLMapElement.h" +#include "HTMLOptGroupElement.h" +#include "HTMLOptionElement.h" +#include "HTMLOptionsCollection.h" +#include "HTMLSelectElement.h" +#include "HTMLTextAreaElement.h" +#include "HitTestRequest.h" +#include "HitTestResult.h" +#include "LocalizedStrings.h" +#include "NodeList.h" +#include "Page.h" +#include "RenderFieldset.h" +#include "RenderFileUploadControl.h" +#include "RenderHTMLCanvas.h" +#include "RenderImage.h" +#include "RenderInline.h" +#include "RenderListBox.h" +#include "RenderListMarker.h" +#include "RenderMenuList.h" +#include "RenderText.h" +#include "RenderTextControl.h" +#include "RenderTheme.h" +#include "RenderView.h" +#include "RenderWidget.h" +#include "SelectionController.h" +#include "Text.h" +#include "TextIterator.h" +#include "htmlediting.h" +#include "visible_units.h" +#include <wtf/StdLibExtras.h> + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityRenderObject::AccessibilityRenderObject(RenderObject* renderer) + : m_renderer(renderer) + , m_ariaRole(UnknownRole) +{ + setAriaRole(); +#ifndef NDEBUG + m_renderer->setHasAXObject(true); +#endif +} + +AccessibilityRenderObject::~AccessibilityRenderObject() +{ + ASSERT(isDetached()); +} + +PassRefPtr<AccessibilityRenderObject> AccessibilityRenderObject::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityRenderObject(renderer)); +} + +void AccessibilityRenderObject::detach() +{ + clearChildren(); + AccessibilityObject::detach(); + +#ifndef NDEBUG + if (m_renderer) + m_renderer->setHasAXObject(false); +#endif + m_renderer = 0; +} + +AccessibilityObject* AccessibilityRenderObject::firstChild() const +{ + if (!m_renderer) + return 0; + + RenderObject* firstChild = m_renderer->firstChild(); + if (!firstChild) + return 0; + + return m_renderer->document()->axObjectCache()->getOrCreate(firstChild); +} + +AccessibilityObject* AccessibilityRenderObject::lastChild() const +{ + if (!m_renderer) + return 0; + + RenderObject* lastChild = m_renderer->lastChild(); + if (!lastChild) + return 0; + + return m_renderer->document()->axObjectCache()->getOrCreate(lastChild); +} + +AccessibilityObject* AccessibilityRenderObject::previousSibling() const +{ + if (!m_renderer) + return 0; + + RenderObject* previousSibling = m_renderer->previousSibling(); + if (!previousSibling) + return 0; + + return m_renderer->document()->axObjectCache()->getOrCreate(previousSibling); +} + +AccessibilityObject* AccessibilityRenderObject::nextSibling() const +{ + if (!m_renderer) + return 0; + + RenderObject* nextSibling = m_renderer->nextSibling(); + if (!nextSibling) + return 0; + + return m_renderer->document()->axObjectCache()->getOrCreate(nextSibling); +} + +AccessibilityObject* AccessibilityRenderObject::parentObjectIfExists() const +{ + if (!m_renderer) + return 0; + + RenderObject *parent = m_renderer->parent(); + if (!parent) + return 0; + + return m_renderer->document()->axObjectCache()->get(parent); +} + +AccessibilityObject* AccessibilityRenderObject::parentObject() const +{ + if (!m_renderer) + return 0; + + RenderObject *parent = m_renderer->parent(); + if (!parent) + return 0; + + if (ariaRoleAttribute() == MenuBarRole) + return m_renderer->document()->axObjectCache()->getOrCreate(parent); + + // menuButton and its corresponding menu are DOM siblings, but Accessibility needs them to be parent/child + if (ariaRoleAttribute() == MenuRole) { + AccessibilityObject* parent = menuButtonForMenu(); + if (parent) + return parent; + } + + return m_renderer->document()->axObjectCache()->getOrCreate(parent); +} + +bool AccessibilityRenderObject::isWebArea() const +{ + return roleValue() == WebAreaRole; +} + +bool AccessibilityRenderObject::isImageButton() const +{ + return isNativeImage() && roleValue() == ButtonRole; +} + +bool AccessibilityRenderObject::isAnchor() const +{ + return !isNativeImage() && isLink(); +} + +bool AccessibilityRenderObject::isNativeTextControl() const +{ + return m_renderer->isTextControl(); +} + +bool AccessibilityRenderObject::isTextControl() const +{ + AccessibilityRole role = roleValue(); + return role == TextAreaRole || role == TextFieldRole; +} + +bool AccessibilityRenderObject::isNativeImage() const +{ + return m_renderer->isImage(); +} + +bool AccessibilityRenderObject::isImage() const +{ + return roleValue() == ImageRole; +} + +bool AccessibilityRenderObject::isAttachment() const +{ + if (!m_renderer) + return false; + + // Widgets are the replaced elements that we represent to AX as attachments + bool isWidget = m_renderer && m_renderer->isWidget(); + ASSERT(!isWidget || (m_renderer->isReplaced() && !isImage())); + return isWidget && ariaRoleAttribute() == UnknownRole; +} + +bool AccessibilityRenderObject::isPasswordField() const +{ + ASSERT(m_renderer); + if (!m_renderer->node() || !m_renderer->node()->isHTMLElement()) + return false; + if (ariaRoleAttribute() != UnknownRole) + return false; + + InputElement* inputElement = toInputElement(static_cast<Element*>(m_renderer->node())); + if (!inputElement) + return false; + + return inputElement->isPasswordField(); +} + +bool AccessibilityRenderObject::isCheckboxOrRadio() const +{ + AccessibilityRole role = roleValue(); + return role == RadioButtonRole || role == CheckBoxRole; +} + +bool AccessibilityRenderObject::isFileUploadButton() const +{ + if (m_renderer && m_renderer->node() && m_renderer->node()->hasTagName(inputTag)) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(m_renderer->node()); + return input->inputType() == HTMLInputElement::FILE; + } + + return false; +} + +bool AccessibilityRenderObject::isInputImage() const +{ + if (m_renderer && m_renderer->node() && m_renderer->node()->hasTagName(inputTag)) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(m_renderer->node()); + return input->inputType() == HTMLInputElement::IMAGE; + } + + return false; +} + +bool AccessibilityRenderObject::isProgressIndicator() const +{ + return roleValue() == ProgressIndicatorRole; +} + +bool AccessibilityRenderObject::isSlider() const +{ + return roleValue() == SliderRole; +} + +bool AccessibilityRenderObject::isMenuRelated() const +{ + AccessibilityRole role = roleValue(); + return role == MenuRole || + role == MenuBarRole || + role == MenuButtonRole || + role == MenuItemRole; +} + +bool AccessibilityRenderObject::isMenu() const +{ + return roleValue() == MenuRole; +} + +bool AccessibilityRenderObject::isMenuBar() const +{ + return roleValue() == MenuBarRole; +} + +bool AccessibilityRenderObject::isMenuButton() const +{ + return roleValue() == MenuButtonRole; +} + +bool AccessibilityRenderObject::isMenuItem() const +{ + return roleValue() == MenuItemRole; +} + +bool AccessibilityRenderObject::isPressed() const +{ + ASSERT(m_renderer); + if (roleValue() != ButtonRole) + return false; + + Node* node = m_renderer->node(); + if (!node) + return false; + + // If this is an ARIA button, check the aria-pressed attribute rather than node()->active() + if (ariaRoleAttribute() == ButtonRole) { + if (equalIgnoringCase(getAttribute(aria_pressedAttr).string(), "true")) + return true; + return false; + } + + return node->active(); +} + +bool AccessibilityRenderObject::isIndeterminate() const +{ + ASSERT(m_renderer); + if (!m_renderer->node() || !m_renderer->node()->isElementNode()) + return false; + + InputElement* inputElement = toInputElement(static_cast<Element*>(m_renderer->node())); + if (!inputElement) + return false; + + return inputElement->isIndeterminate(); +} + +bool AccessibilityRenderObject::isChecked() const +{ + ASSERT(m_renderer); + if (!m_renderer->node() || !m_renderer->node()->isElementNode()) + return false; + + InputElement* inputElement = toInputElement(static_cast<Element*>(m_renderer->node())); + if (!inputElement) + return false; + + return inputElement->isChecked(); +} + +bool AccessibilityRenderObject::isHovered() const +{ + ASSERT(m_renderer); + return m_renderer->node() && m_renderer->node()->hovered(); +} + +bool AccessibilityRenderObject::isMultiSelect() const +{ + ASSERT(m_renderer); + if (!m_renderer->isListBox()) + return false; + return m_renderer->node() && static_cast<HTMLSelectElement*>(m_renderer->node())->multiple(); +} + +bool AccessibilityRenderObject::isReadOnly() const +{ + ASSERT(m_renderer); + + if (isWebArea()) { + Document* document = m_renderer->document(); + if (!document) + return true; + + HTMLElement* body = document->body(); + if (body && body->isContentEditable()) + return false; + + Frame* frame = document->frame(); + if (!frame) + return true; + + return !frame->isContentEditable(); + } + + return !m_renderer->node() || !m_renderer->node()->isContentEditable(); +} + +bool AccessibilityRenderObject::isOffScreen() const +{ + ASSERT(m_renderer); + IntRect contentRect = m_renderer->absoluteClippedOverflowRect(); + FrameView* view = m_renderer->document()->frame()->view(); + FloatRect viewRect = view->visibleContentRect(); + viewRect.intersect(contentRect); + return viewRect.isEmpty(); +} + +int AccessibilityRenderObject::headingLevel(Node* node) +{ + // headings can be in block flow and non-block flow + if (!node) + return 0; + + if (RenderObject* renderer = node->renderer()) { + AccessibilityObject* axObjectForNode = node->document()->axObjectCache()->getOrCreate(renderer); + if (axObjectForNode->ariaRoleAttribute() == HeadingRole) { + if (!node->isElementNode()) + return 0; + Element* element = static_cast<Element*>(node); + return element->getAttribute(aria_levelAttr).toInt(); + } + } + + + if (node->hasTagName(h1Tag)) + return 1; + + if (node->hasTagName(h2Tag)) + return 2; + + if (node->hasTagName(h3Tag)) + return 3; + + if (node->hasTagName(h4Tag)) + return 4; + + if (node->hasTagName(h5Tag)) + return 5; + + if (node->hasTagName(h6Tag)) + return 6; + + return 0; +} + +bool AccessibilityRenderObject::isHeading() const +{ + return roleValue() == HeadingRole; +} + +bool AccessibilityRenderObject::isLink() const +{ + return roleValue() == WebCoreLinkRole; +} + +bool AccessibilityRenderObject::isControl() const +{ + if (!m_renderer) + return false; + + Node* node = m_renderer->node(); + return node && ((node->isElementNode() && static_cast<Element*>(node)->isFormControlElement()) + || AccessibilityObject::isARIAControl(ariaRoleAttribute())); +} + +bool AccessibilityRenderObject::isFieldset() const +{ + if (!m_renderer) + return false; + + return m_renderer->isFieldset(); +} + +bool AccessibilityRenderObject::isGroup() const +{ + return roleValue() == GroupRole; +} + +const AtomicString& AccessibilityRenderObject::getAttribute(const QualifiedName& attribute) const +{ + Node* node = m_renderer->node(); + if (!node) + return nullAtom; + + if (!node->isElementNode()) + return nullAtom; + + Element* element = static_cast<Element*>(node); + return element->getAttribute(attribute); +} + +Element* AccessibilityRenderObject::anchorElement() const +{ + if (!m_renderer) + return 0; + + AXObjectCache* cache = axObjectCache(); + RenderObject* currRenderer; + + // Search up the render tree for a RenderObject with a DOM node. Defer to an earlier continuation, though. + for (currRenderer = m_renderer; currRenderer && !currRenderer->node(); currRenderer = currRenderer->parent()) { + if (currRenderer->isRenderBlock()) { + RenderInline* continuation = toRenderBlock(currRenderer)->inlineContinuation(); + if (continuation) + return cache->getOrCreate(continuation)->anchorElement(); + } + } + + // bail if none found + if (!currRenderer) + return 0; + + // search up the DOM tree for an anchor element + // NOTE: this assumes that any non-image with an anchor is an HTMLAnchorElement + Node* node = currRenderer->node(); + for ( ; node; node = node->parentNode()) { + if (node->hasTagName(aTag) || (node->renderer() && cache->getOrCreate(node->renderer())->isAnchor())) + return static_cast<Element*>(node); + } + + return 0; +} + +Element* AccessibilityRenderObject::actionElement() const +{ + if (!m_renderer) + return 0; + + Node* node = m_renderer->node(); + if (node) { + if (node->hasTagName(inputTag)) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(node); + if (!input->disabled() && (isCheckboxOrRadio() || input->isTextButton())) + return input; + } else if (node->hasTagName(buttonTag)) + return static_cast<Element*>(node); + } + + if (isFileUploadButton()) + return static_cast<Element*>(m_renderer->node()); + + if (AccessibilityObject::isARIAInput(ariaRoleAttribute())) + return static_cast<Element*>(m_renderer->node()); + + if (isImageButton()) + return static_cast<Element*>(m_renderer->node()); + + if (m_renderer->isMenuList()) + return static_cast<Element*>(m_renderer->node()); + + Element* elt = anchorElement(); + if (!elt) + elt = mouseButtonListener(); + return elt; +} + +Element* AccessibilityRenderObject::mouseButtonListener() const +{ + Node* node = m_renderer->node(); + if (!node) + return 0; + + // check if our parent is a mouse button listener + while (node && !node->isElementNode()) + node = node->parent(); + + if (!node) + return 0; + + // FIXME: Do the continuation search like anchorElement does + for (Element* element = static_cast<Element*>(node); element; element = element->parentElement()) { + if (element->getAttributeEventListener(eventNames().clickEvent) || element->getAttributeEventListener(eventNames().mousedownEvent) || element->getAttributeEventListener(eventNames().mouseupEvent)) + return element; + } + + return 0; +} + +static Element* siblingWithAriaRole(String role, Node* node) +{ + Node* sibling = node->parent()->firstChild(); + while (sibling) { + if (sibling->isElementNode()) { + String siblingAriaRole = static_cast<Element*>(sibling)->getAttribute(roleAttr).string(); + if (equalIgnoringCase(siblingAriaRole, role)) + return static_cast<Element*>(sibling); + } + sibling = sibling->nextSibling(); + } + + return 0; +} + +Element* AccessibilityRenderObject::menuElementForMenuButton() const +{ + if (ariaRoleAttribute() != MenuButtonRole) + return 0; + + return siblingWithAriaRole("menu", renderer()->node()); +} + +AccessibilityObject* AccessibilityRenderObject::menuForMenuButton() const +{ + Element* menu = menuElementForMenuButton(); + if (menu && menu->renderer()) + return m_renderer->document()->axObjectCache()->getOrCreate(menu->renderer()); + return 0; +} + +Element* AccessibilityRenderObject::menuItemElementForMenu() const +{ + if (ariaRoleAttribute() != MenuRole) + return 0; + + return siblingWithAriaRole("menuitem", renderer()->node()); +} + +AccessibilityObject* AccessibilityRenderObject::menuButtonForMenu() const +{ + Element* menuItem = menuItemElementForMenu(); + + if (menuItem && menuItem->renderer()) { + // ARIA just has generic menu items. AppKit needs to know if this is a top level items like MenuBarButton or MenuBarItem + AccessibilityObject* menuItemAX = m_renderer->document()->axObjectCache()->getOrCreate(menuItem->renderer()); + if (menuItemAX->isMenuButton()) + return menuItemAX; + } + return 0; +} + +String AccessibilityRenderObject::helpText() const +{ + if (!m_renderer) + return String(); + + for (RenderObject* curr = m_renderer; curr; curr = curr->parent()) { + if (curr->node() && curr->node()->isHTMLElement()) { + const AtomicString& summary = static_cast<Element*>(curr->node())->getAttribute(summaryAttr); + if (!summary.isEmpty()) + return summary; + const AtomicString& title = static_cast<Element*>(curr->node())->getAttribute(titleAttr); + if (!title.isEmpty()) + return title; + } + } + + return String(); +} + +String AccessibilityRenderObject::textUnderElement() const +{ + if (!m_renderer) + return String(); + + if (isFileUploadButton()) { + RenderFileUploadControl* uploadControl = static_cast<RenderFileUploadControl*>(m_renderer); + return uploadControl->buttonValue(); + } + + Node* node = m_renderer->node(); + if (node) { + if (Frame* frame = node->document()->frame()) { + // catch stale WebCoreAXObject (see <rdar://problem/3960196>) + if (frame->document() != node->document()) + return String(); + return plainText(rangeOfContents(node).get()); + } + } + + // return the null string for anonymous text because it is non-trivial to get + // the actual text and, so far, that is not needed + return String(); +} + +bool AccessibilityRenderObject::hasIntValue() const +{ + if (isHeading()) + return true; + + if (m_renderer->node() && isCheckboxOrRadio()) + return true; + + return false; +} + +int AccessibilityRenderObject::intValue() const +{ + if (!m_renderer || isPasswordField()) + return 0; + + if (isHeading()) + return headingLevel(m_renderer->node()); + + Node* node = m_renderer->node(); + if (!node || !isCheckboxOrRadio()) + return 0; + + // If this is an ARIA checkbox or radio, check the aria-checked attribute rather than node()->checked() + AccessibilityRole ariaRole = ariaRoleAttribute(); + if (ariaRole == RadioButtonRole || ariaRole == CheckBoxRole) { + if (equalIgnoringCase(getAttribute(aria_checkedAttr).string(), "true")) + return true; + return false; + } + + return static_cast<HTMLInputElement*>(node)->checked(); +} + +float AccessibilityRenderObject::valueForRange() const +{ + if (!isProgressIndicator() && !isSlider()) + return 0.0f; + + return getAttribute(aria_valuenowAttr).toFloat(); +} + +float AccessibilityRenderObject::maxValueForRange() const +{ + if (!isProgressIndicator() && !isSlider()) + return 0.0f; + + return getAttribute(aria_valuemaxAttr).toFloat(); +} + +float AccessibilityRenderObject::minValueForRange() const +{ + if (!isProgressIndicator() && !isSlider()) + return 0.0f; + + return getAttribute(aria_valueminAttr).toFloat(); +} + +String AccessibilityRenderObject::stringValue() const +{ + if (!m_renderer || isPasswordField()) + return String(); + + if (m_renderer->isText()) + return textUnderElement(); + + if (m_renderer->isMenuList()) + return static_cast<RenderMenuList*>(m_renderer)->text(); + + if (m_renderer->isListMarker()) + return static_cast<RenderListMarker*>(m_renderer)->text(); + + if (isWebArea()) { + if (m_renderer->document()->frame()) + return String(); + + // FIXME: should use startOfDocument and endOfDocument (or rangeForDocument?) here + VisiblePosition startVisiblePosition = m_renderer->positionForCoordinates(0, 0); + VisiblePosition endVisiblePosition = m_renderer->positionForCoordinates(INT_MAX, INT_MAX); + if (startVisiblePosition.isNull() || endVisiblePosition.isNull()) + return String(); + + return plainText(makeRange(startVisiblePosition, endVisiblePosition).get()); + } + + if (isTextControl()) + return text(); + + if (isFileUploadButton()) { + RenderFileUploadControl* uploadControl = static_cast<RenderFileUploadControl*>(m_renderer); + return uploadControl->fileTextValue(); + } + + // FIXME: We might need to implement a value here for more types + // FIXME: It would be better not to advertise a value at all for the types for which we don't implement one; + // this would require subclassing or making accessibilityAttributeNames do something other than return a + // single static array. + return String(); +} + +// This function implements the ARIA accessible name as described by the Mozilla +// ARIA Implementer's Guide. +static String accessibleNameForNode(Node* node) +{ + if (node->isTextNode()) + return static_cast<Text*>(node)->data(); + + if (node->hasTagName(inputTag)) + return static_cast<HTMLInputElement*>(node)->value(); + + if (node->isHTMLElement()) { + const AtomicString& alt = static_cast<HTMLElement*>(node)->getAttribute(altAttr); + if (!alt.isEmpty()) + return alt; + } + + return String(); +} + +String AccessibilityRenderObject::ariaAccessiblityName(const String& s) const +{ + Document* document = m_renderer->document(); + if (!document) + return String(); + + String idList = s; + idList.replace('\n', ' '); + Vector<String> idVector; + idList.split(' ', idVector); + + Vector<UChar> ariaLabel; + unsigned size = idVector.size(); + for (unsigned i = 0; i < size; ++i) { + String idName = idVector[i]; + Element* idElement = document->getElementById(idName); + if (idElement) { + String nameFragment = accessibleNameForNode(idElement); + ariaLabel.append(nameFragment.characters(), nameFragment.length()); + for (Node* n = idElement->firstChild(); n; n = n->traverseNextNode(idElement)) { + nameFragment = accessibleNameForNode(n); + ariaLabel.append(nameFragment.characters(), nameFragment.length()); + } + ariaLabel.append(' '); + } + } + return String::adopt(ariaLabel); +} + +String AccessibilityRenderObject::ariaLabeledByAttribute() const +{ + Node* node = m_renderer->node(); + if (!node) + return String(); + + if (!node->isElementNode()) + return String(); + + // The ARIA spec uses the British spelling: "labelled." It seems prudent to support the American + // spelling ("labeled") as well. + String idList = getAttribute(aria_labeledbyAttr).string(); + if (idList.isEmpty()) { + idList = getAttribute(aria_labelledbyAttr).string(); + if (idList.isEmpty()) + return String(); + } + + return ariaAccessiblityName(idList); +} + +static HTMLLabelElement* labelForElement(Element* element) +{ + RefPtr<NodeList> list = element->document()->getElementsByTagName("label"); + unsigned len = list->length(); + for (unsigned i = 0; i < len; i++) { + if (list->item(i)->hasTagName(labelTag)) { + HTMLLabelElement* label = static_cast<HTMLLabelElement*>(list->item(i)); + if (label->correspondingControl() == element) + return label; + } + } + + return 0; +} + +HTMLLabelElement* AccessibilityRenderObject::labelElementContainer() const +{ + if (!m_renderer) + return false; + + // the control element should not be considered part of the label + if (isControl()) + return false; + + // find if this has a parent that is a label + for (Node* parentNode = m_renderer->node(); parentNode; parentNode = parentNode->parentNode()) { + if (parentNode->hasTagName(labelTag)) + return static_cast<HTMLLabelElement*>(parentNode); + } + + return 0; +} + +String AccessibilityRenderObject::title() const +{ + AccessibilityRole ariaRole = ariaRoleAttribute(); + + if (!m_renderer) + return String(); + + Node* node = m_renderer->node(); + if (!node) + return String(); + + String ariaLabel = ariaLabeledByAttribute(); + if (!ariaLabel.isEmpty()) + return ariaLabel; + + const AtomicString& title = getAttribute(titleAttr); + if (!title.isEmpty()) + return title; + + bool isInputTag = node->hasTagName(inputTag); + if (isInputTag) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(node); + if (input->isTextButton()) + return input->value(); + } + + if (isInputTag || AccessibilityObject::isARIAInput(ariaRole) || isControl()) { + HTMLLabelElement* label = labelForElement(static_cast<Element*>(node)); + if (label && !titleUIElement()) + return label->innerText(); + + const AtomicString& placeholder = getAttribute(placeholderAttr); + if (!placeholder.isEmpty()) + return placeholder; + } + + if (roleValue() == ButtonRole + || ariaRole == ListBoxOptionRole + || ariaRole == MenuItemRole + || ariaRole == MenuButtonRole + || isHeading()) + return textUnderElement(); + + if (isLink()) + return textUnderElement(); + + return String(); +} + +String AccessibilityRenderObject::ariaDescribedByAttribute() const +{ + String idList = getAttribute(aria_describedbyAttr).string(); + if (idList.isEmpty()) + return String(); + + return ariaAccessiblityName(idList); +} + +String AccessibilityRenderObject::accessibilityDescription() const +{ + if (!m_renderer) + return String(); + + String ariaDescription = ariaDescribedByAttribute(); + if (!ariaDescription.isEmpty()) + return ariaDescription; + + if (isImage() || isInputImage() || isNativeImage()) { + Node* node = m_renderer->node(); + if (node && node->isHTMLElement()) { + const AtomicString& alt = static_cast<HTMLElement*>(node)->getAttribute(altAttr); + if (alt.isEmpty()) + return String(); + return alt; + } + } + + if (isWebArea()) { + Document *document = m_renderer->document(); + Node* owner = document->ownerElement(); + if (owner) { + if (owner->hasTagName(frameTag) || owner->hasTagName(iframeTag)) { + const AtomicString& title = static_cast<HTMLFrameElementBase*>(owner)->getAttribute(titleAttr); + if (!title.isEmpty()) + return title; + return static_cast<HTMLFrameElementBase*>(owner)->name(); + } + if (owner->isHTMLElement()) + return static_cast<HTMLElement*>(owner)->getAttribute(nameAttr); + } + owner = document->body(); + if (owner && owner->isHTMLElement()) + return static_cast<HTMLElement*>(owner)->getAttribute(nameAttr); + } + + if (roleValue() == DefinitionListTermRole) + return AXDefinitionListTermText(); + if (roleValue() == DefinitionListDefinitionRole) + return AXDefinitionListDefinitionText(); + + return String(); +} + +IntRect AccessibilityRenderObject::boundingBoxRect() const +{ + RenderObject* obj = m_renderer; + + if (!obj) + return IntRect(); + + if (obj->node()) // If we are a continuation, we want to make sure to use the primary renderer. + obj = obj->node()->renderer(); + + Vector<FloatQuad> quads; + obj->absoluteQuads(quads); + const size_t n = quads.size(); + if (!n) + return IntRect(); + + IntRect result; + for (size_t i = 0; i < n; ++i) { + IntRect r = quads[i].enclosingBoundingBox(); + if (!r.isEmpty()) { + if (obj->style()->hasAppearance()) + theme()->adjustRepaintRect(obj, r); + result.unite(r); + } + } + return result; +} + +IntRect AccessibilityRenderObject::checkboxOrRadioRect() const +{ + if (!m_renderer) + return IntRect(); + + HTMLLabelElement* label = labelForElement(static_cast<Element*>(m_renderer->node())); + if (!label || !label->renderer()) + return boundingBoxRect(); + + IntRect labelRect = axObjectCache()->getOrCreate(label->renderer())->elementRect(); + labelRect.unite(boundingBoxRect()); + return labelRect; +} + +IntRect AccessibilityRenderObject::elementRect() const +{ + // a checkbox or radio button should encompass its label + if (isCheckboxOrRadio()) + return checkboxOrRadioRect(); + + return boundingBoxRect(); +} + +IntSize AccessibilityRenderObject::size() const +{ + IntRect rect = elementRect(); + return rect.size(); +} + +AccessibilityObject* AccessibilityRenderObject::internalLinkElement() const +{ + Element* element = anchorElement(); + if (!element) + return 0; + + // Right now, we do not support ARIA links as internal link elements + if (!element->hasTagName(aTag)) + return 0; + HTMLAnchorElement* anchor = static_cast<HTMLAnchorElement*>(element); + + KURL linkURL = anchor->href(); + String ref = linkURL.ref(); + if (ref.isEmpty()) + return 0; + + // check if URL is the same as current URL + linkURL.removeRef(); + if (m_renderer->document()->url() != linkURL) + return 0; + + Node* linkedNode = m_renderer->document()->findAnchor(ref); + if (!linkedNode) + return 0; + + // the element we find may not be accessible, keep searching until we find a good one + AccessibilityObject* linkedAXElement = m_renderer->document()->axObjectCache()->getOrCreate(linkedNode->renderer()); + while (linkedAXElement && linkedAXElement->accessibilityIsIgnored()) { + linkedNode = linkedNode->traverseNextNode(); + + while (linkedNode && !linkedNode->renderer()) + linkedNode = linkedNode->traverseNextSibling(); + + if (!linkedNode) + return 0; + linkedAXElement = m_renderer->document()->axObjectCache()->getOrCreate(linkedNode->renderer()); + } + + return linkedAXElement; +} + +void AccessibilityRenderObject::addRadioButtonGroupMembers(AccessibilityChildrenVector& linkedUIElements) const +{ + if (!m_renderer || roleValue() != RadioButtonRole) + return; + + Node* node = m_renderer->node(); + if (!node || !node->hasTagName(inputTag)) + return; + + HTMLInputElement* input = static_cast<HTMLInputElement*>(node); + // if there's a form, then this is easy + if (input->form()) { + Vector<RefPtr<Node> > formElements; + input->form()->getNamedElements(input->name(), formElements); + + unsigned len = formElements.size(); + for (unsigned i = 0; i < len; ++i) { + Node* associateElement = formElements[i].get(); + if (AccessibilityObject* object = m_renderer->document()->axObjectCache()->getOrCreate(associateElement->renderer())) + linkedUIElements.append(object); + } + } else { + RefPtr<NodeList> list = node->document()->getElementsByTagName("input"); + unsigned len = list->length(); + for (unsigned i = 0; i < len; ++i) { + if (list->item(i)->hasTagName(inputTag)) { + HTMLInputElement* associateElement = static_cast<HTMLInputElement*>(list->item(i)); + if (associateElement->isRadioButton() && associateElement->name() == input->name()) { + if (AccessibilityObject* object = m_renderer->document()->axObjectCache()->getOrCreate(associateElement->renderer())) + linkedUIElements.append(object); + } + } + } + } +} + +// linked ui elements could be all the related radio buttons in a group +// or an internal anchor connection +void AccessibilityRenderObject::linkedUIElements(AccessibilityChildrenVector& linkedUIElements) const +{ + if (isAnchor()) { + AccessibilityObject* linkedAXElement = internalLinkElement(); + if (linkedAXElement) + linkedUIElements.append(linkedAXElement); + } + + if (roleValue() == RadioButtonRole) + addRadioButtonGroupMembers(linkedUIElements); +} + +bool AccessibilityRenderObject::exposesTitleUIElement() const +{ + if (!isControl()) + return false; + + // checkbox or radio buttons don't expose the title ui element unless it has a title already + if (isCheckboxOrRadio() && getAttribute(titleAttr).isEmpty()) + return false; + + return true; +} + +AccessibilityObject* AccessibilityRenderObject::titleUIElement() const +{ + if (!m_renderer) + return 0; + + // if isFieldset is true, the renderer is guaranteed to be a RenderFieldset + if (isFieldset()) + return axObjectCache()->getOrCreate(static_cast<RenderFieldset*>(m_renderer)->findLegend()); + + if (!exposesTitleUIElement()) + return 0; + + Node* element = m_renderer->node(); + HTMLLabelElement* label = labelForElement(static_cast<Element*>(element)); + if (label && label->renderer()) + return axObjectCache()->getOrCreate(label->renderer()); + + return 0; +} + +bool AccessibilityRenderObject::accessibilityIsIgnored() const +{ + // ignore invisible element + if (!m_renderer || m_renderer->style()->visibility() != VISIBLE) + return true; + + if (isPresentationalChildOfAriaRole()) + return true; + + // ignore popup menu items because AppKit does + for (RenderObject* parent = m_renderer->parent(); parent; parent = parent->parent()) { + if (parent->isMenuList()) + return true; + } + + // find out if this element is inside of a label element. + // if so, it may be ignored because it's the label for a checkbox or radio button + HTMLLabelElement* labelElement = labelElementContainer(); + if (labelElement) { + HTMLElement* correspondingControl = labelElement->correspondingControl(); + if (correspondingControl && correspondingControl->renderer()) { + AccessibilityObject* controlObject = axObjectCache()->getOrCreate(correspondingControl->renderer()); + if (!controlObject->exposesTitleUIElement()) + return true; + } + } + + AccessibilityRole ariaRole = ariaRoleAttribute(); + if (ariaRole == TextAreaRole || ariaRole == StaticTextRole) { + String ariaText = text(); + return ariaText.isNull() || ariaText.isEmpty(); + } + + // NOTE: BRs always have text boxes now, so the text box check here can be removed + if (m_renderer->isText()) { + // static text beneath MenuItems and MenuButtons are just reported along with the menu item, so it's ignored on an individual level + if (parentObjectUnignored()->ariaRoleAttribute() == MenuItemRole || + parentObjectUnignored()->ariaRoleAttribute() == MenuButtonRole) + return true; + RenderText* renderText = toRenderText(m_renderer); + if (m_renderer->isBR() || !renderText->firstTextBox()) + return true; + + // text elements that are just empty whitespace should not be returned + return renderText->text()->containsOnlyWhitespace(); + } + + if (isHeading()) + return false; + + if (isLink()) + return false; + + // all controls are accessible + if (isControl()) + return false; + + // don't ignore labels, because they serve as TitleUIElements + Node* node = m_renderer->node(); + if (node && node->hasTagName(labelTag)) + return false; + + if (m_renderer->isBlockFlow() && m_renderer->childrenInline()) + return !toRenderBlock(m_renderer)->firstLineBox() && !mouseButtonListener(); + + // ignore images seemingly used as spacers + if (isImage()) { + if (node && node->isElementNode()) { + Element* elt = static_cast<Element*>(node); + const AtomicString& alt = elt->getAttribute(altAttr); + // don't ignore an image that has an alt tag + if (!alt.isEmpty()) + return false; + // informal standard is to ignore images with zero-length alt strings + if (!alt.isNull()) + return true; + } + + if (node && node->hasTagName(canvasTag)) { + RenderHTMLCanvas* canvas = static_cast<RenderHTMLCanvas*>(m_renderer); + if (canvas->height() <= 1 || canvas->width() <= 1) + return true; + return false; + } + + // check for one-dimensional image + RenderImage* image = toRenderImage(m_renderer); + if (image->height() <= 1 || image->width() <= 1) + return true; + + // check whether rendered image was stretched from one-dimensional file image + if (isNativeImage()) { + if (image->cachedImage()) { + IntSize imageSize = image->cachedImage()->imageSize(image->view()->zoomFactor()); + return imageSize.height() <= 1 || imageSize.width() <= 1; + } + } + return false; + } + + if (ariaRole != UnknownRole) + return false; + + // make a platform-specific decision + if (isAttachment()) + return accessibilityIgnoreAttachment(); + + return !m_renderer->isListMarker() && !isWebArea(); +} + +bool AccessibilityRenderObject::isLoaded() const +{ + return !m_renderer->document()->tokenizer(); +} + +int AccessibilityRenderObject::layoutCount() const +{ + if (!m_renderer->isRenderView()) + return 0; + return toRenderView(m_renderer)->frameView()->layoutCount(); +} + +String AccessibilityRenderObject::text() const +{ + if (!isTextControl() || isPasswordField()) + return String(); + + if (isNativeTextControl()) + return toRenderTextControl(m_renderer)->text(); + + Node* node = m_renderer->node(); + if (!node) + return String(); + if (!node->isElementNode()) + return String(); + + return static_cast<Element*>(node)->innerText(); +} + +int AccessibilityRenderObject::textLength() const +{ + ASSERT(isTextControl()); + + if (isPasswordField()) + return -1; // need to return something distinct from 0 + + return text().length(); +} + +PassRefPtr<Range> AccessibilityRenderObject::ariaSelectedTextDOMRange() const +{ + Node* node = m_renderer->node(); + if (!node) + return 0; + + RefPtr<Range> currentSelectionRange = selection().toNormalizedRange(); + if (!currentSelectionRange) + return 0; + + ExceptionCode ec = 0; + if (!currentSelectionRange->intersectsNode(node, ec)) + return Range::create(currentSelectionRange->ownerDocument()); + + RefPtr<Range> ariaRange = rangeOfContents(node); + Position startPosition, endPosition; + + // Find intersection of currentSelectionRange and ariaRange + if (ariaRange->startOffset() > currentSelectionRange->startOffset()) + startPosition = ariaRange->startPosition(); + else + startPosition = currentSelectionRange->startPosition(); + + if (ariaRange->endOffset() < currentSelectionRange->endOffset()) + endPosition = ariaRange->endPosition(); + else + endPosition = currentSelectionRange->endPosition(); + + return Range::create(ariaRange->ownerDocument(), startPosition, endPosition); +} + +String AccessibilityRenderObject::selectedText() const +{ + ASSERT(isTextControl()); + + if (isPasswordField()) + return String(); // need to return something distinct from empty string + + if (isNativeTextControl()) { + RenderTextControl* textControl = toRenderTextControl(m_renderer); + return textControl->text().substring(textControl->selectionStart(), textControl->selectionEnd() - textControl->selectionStart()); + } + + if (ariaRoleAttribute() == UnknownRole) + return String(); + + RefPtr<Range> ariaRange = ariaSelectedTextDOMRange(); + if (!ariaRange) + return String(); + return ariaRange->text(); +} + +const AtomicString& AccessibilityRenderObject::accessKey() const +{ + Node* node = m_renderer->node(); + if (!node) + return nullAtom; + if (!node->isElementNode()) + return nullAtom; + return static_cast<Element*>(node)->getAttribute(accesskeyAttr); +} + +VisibleSelection AccessibilityRenderObject::selection() const +{ + return m_renderer->document()->frame()->selection()->selection(); +} + +PlainTextRange AccessibilityRenderObject::selectedTextRange() const +{ + ASSERT(isTextControl()); + + if (isPasswordField()) + return PlainTextRange(); + + AccessibilityRole ariaRole = ariaRoleAttribute(); + if (isNativeTextControl() && ariaRole == UnknownRole) { + RenderTextControl* textControl = toRenderTextControl(m_renderer); + return PlainTextRange(textControl->selectionStart(), textControl->selectionEnd() - textControl->selectionStart()); + } + + if (ariaRole == UnknownRole) + return PlainTextRange(); + + RefPtr<Range> ariaRange = ariaSelectedTextDOMRange(); + if (!ariaRange) + return PlainTextRange(); + return PlainTextRange(ariaRange->startOffset(), ariaRange->endOffset()); +} + +void AccessibilityRenderObject::setSelectedTextRange(const PlainTextRange& range) +{ + if (isNativeTextControl()) { + RenderTextControl* textControl = toRenderTextControl(m_renderer); + textControl->setSelectionRange(range.start, range.start + range.length); + return; + } + + Document* document = m_renderer->document(); + if (!document) + return; + Frame* frame = document->frame(); + if (!frame) + return; + Node* node = m_renderer->node(); + frame->selection()->setSelection(VisibleSelection(Position(node, range.start), + Position(node, range.start + range.length), DOWNSTREAM)); +} + +KURL AccessibilityRenderObject::url() const +{ + if (isAnchor() && m_renderer->node()->hasTagName(aTag)) { + if (HTMLAnchorElement* anchor = static_cast<HTMLAnchorElement*>(anchorElement())) + return anchor->href(); + } + + if (isWebArea()) + return m_renderer->document()->url(); + + if (isImage() && m_renderer->node() && m_renderer->node()->hasTagName(imgTag)) + return static_cast<HTMLImageElement*>(m_renderer->node())->src(); + + if (isInputImage()) + return static_cast<HTMLInputElement*>(m_renderer->node())->src(); + + return KURL(); +} + +bool AccessibilityRenderObject::isVisited() const +{ + return m_renderer->style()->pseudoState() == PseudoVisited; +} + +bool AccessibilityRenderObject::isSelected() const +{ + if (!m_renderer) + return false; + + Node* node = m_renderer->node(); + if (!node) + return false; + + return false; +} + +bool AccessibilityRenderObject::isFocused() const +{ + if (!m_renderer) + return false; + + Document* document = m_renderer->document(); + if (!document) + return false; + + Node* focusedNode = document->focusedNode(); + if (!focusedNode) + return false; + + // A web area is represented by the Document node in the DOM tree, which isn't focusable. + // Check instead if the frame's selection controller is focused + if (focusedNode == m_renderer->node() || + (roleValue() == WebAreaRole && document->frame()->selection()->isFocusedAndActive())) + return true; + + return false; +} + +void AccessibilityRenderObject::setFocused(bool on) +{ + if (!canSetFocusAttribute()) + return; + + if (!on) + m_renderer->document()->setFocusedNode(0); + else { + if (m_renderer->node()->isElementNode()) + static_cast<Element*>(m_renderer->node())->focus(); + else + m_renderer->document()->setFocusedNode(m_renderer->node()); + } +} + +void AccessibilityRenderObject::setValue(const String& string) +{ + // FIXME: Do we want to do anything here for ARIA textboxes? + if (m_renderer->isTextField()) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(m_renderer->node()); + input->setValue(string); + } else if (m_renderer->isTextArea()) { + HTMLTextAreaElement* textArea = static_cast<HTMLTextAreaElement*>(m_renderer->node()); + textArea->setValue(string); + } +} + +bool AccessibilityRenderObject::isEnabled() const +{ + ASSERT(m_renderer); + Node* node = m_renderer->node(); + if (!node || !node->isElementNode()) + return true; + + return static_cast<Element*>(node)->isEnabledFormControl(); +} + +RenderView* AccessibilityRenderObject::topRenderer() const +{ + return m_renderer->document()->topDocument()->renderView(); +} + +Document* AccessibilityRenderObject::document() const +{ + return m_renderer->document(); +} + +FrameView* AccessibilityRenderObject::topDocumentFrameView() const +{ + return topRenderer()->view()->frameView(); +} + +Widget* AccessibilityRenderObject::widget() const +{ + if (!m_renderer->isWidget()) + return 0; + + return static_cast<RenderWidget*>(m_renderer)->widget(); +} + +AXObjectCache* AccessibilityRenderObject::axObjectCache() const +{ + return m_renderer->document()->axObjectCache(); +} + +AccessibilityObject* AccessibilityRenderObject::accessibilityParentForImageMap(HTMLMapElement* map) const +{ + // find an image that is using this map + if (!m_renderer || !map) + return 0; + + String mapName = map->getName().string().lower(); + RefPtr<HTMLCollection> coll = m_renderer->document()->images(); + for (Node* curr = coll->firstItem(); curr; curr = coll->nextItem()) { + RenderObject* obj = curr->renderer(); + if (!obj || !curr->hasTagName(imgTag)) + continue; + + // The HTMLImageElement's useMap() value includes the '#' symbol at the beginning, + // which has to be stripped off + String useMapName = static_cast<HTMLImageElement*>(curr)->useMap().substring(1).lower(); + if (useMapName == mapName) + return axObjectCache()->getOrCreate(obj); + } + + return 0; +} + +void AccessibilityRenderObject::getDocumentLinks(AccessibilityChildrenVector& result) +{ + Document* document = m_renderer->document(); + RefPtr<HTMLCollection> coll = document->links(); + Node* curr = coll->firstItem(); + while (curr) { + RenderObject* obj = curr->renderer(); + if (obj) { + RefPtr<AccessibilityObject> axobj = document->axObjectCache()->getOrCreate(obj); + ASSERT(axobj); + if (!axobj->accessibilityIsIgnored() && axobj->isLink()) + result.append(axobj); + } else { + Node* parent = curr->parent(); + if (parent && curr->hasTagName(areaTag) && parent->hasTagName(mapTag)) { + AccessibilityImageMapLink* areaObject = static_cast<AccessibilityImageMapLink*>(axObjectCache()->getOrCreate(ImageMapLinkRole)); + areaObject->setHTMLAreaElement(static_cast<HTMLAreaElement*>(curr)); + areaObject->setHTMLMapElement(static_cast<HTMLMapElement*>(parent)); + areaObject->setParent(accessibilityParentForImageMap(static_cast<HTMLMapElement*>(parent))); + + result.append(areaObject); + } + } + curr = coll->nextItem(); + } +} + +FrameView* AccessibilityRenderObject::documentFrameView() const +{ + if (!m_renderer || !m_renderer->document()) + return 0; + + // this is the RenderObject's Document's Frame's FrameView + return m_renderer->document()->view(); +} + +Widget* AccessibilityRenderObject::widgetForAttachmentView() const +{ + if (!isAttachment()) + return 0; + return static_cast<RenderWidget*>(m_renderer)->widget(); +} + +FrameView* AccessibilityRenderObject::frameViewIfRenderView() const +{ + if (!m_renderer->isRenderView()) + return 0; + // this is the RenderObject's Document's renderer's FrameView + return m_renderer->view()->frameView(); +} + +// This function is like a cross-platform version of - (WebCoreTextMarkerRange*)textMarkerRange. It returns +// a Range that we can convert to a WebCoreTextMarkerRange in the Obj-C file +VisiblePositionRange AccessibilityRenderObject::visiblePositionRange() const +{ + if (!m_renderer) + return VisiblePositionRange(); + + // construct VisiblePositions for start and end + Node* node = m_renderer->node(); + if (!node) + return VisiblePositionRange(); + + VisiblePosition startPos = firstDeepEditingPositionForNode(node); + VisiblePosition endPos = lastDeepEditingPositionForNode(node); + + // the VisiblePositions are equal for nodes like buttons, so adjust for that + // FIXME: Really? [button, 0] and [button, 1] are distinct (before and after the button) + // I expect this code is only hit for things like empty divs? In which case I don't think + // the behavior is correct here -- eseidel + if (startPos == endPos) { + endPos = endPos.next(); + if (endPos.isNull()) + endPos = startPos; + } + + return VisiblePositionRange(startPos, endPos); +} + +VisiblePositionRange AccessibilityRenderObject::visiblePositionRangeForLine(unsigned lineCount) const +{ + if (lineCount == 0 || !m_renderer) + return VisiblePositionRange(); + + // iterate over the lines + // FIXME: this is wrong when lineNumber is lineCount+1, because nextLinePosition takes you to the + // last offset of the last line + VisiblePosition visiblePos = m_renderer->document()->renderer()->positionForCoordinates(0, 0); + VisiblePosition savedVisiblePos; + while (--lineCount != 0) { + savedVisiblePos = visiblePos; + visiblePos = nextLinePosition(visiblePos, 0); + if (visiblePos.isNull() || visiblePos == savedVisiblePos) + return VisiblePositionRange(); + } + + // make a caret selection for the marker position, then extend it to the line + // NOTE: ignores results of sel.modify because it returns false when + // starting at an empty line. The resulting selection in that case + // will be a caret at visiblePos. + SelectionController selection; + selection.setSelection(VisibleSelection(visiblePos)); + selection.modify(SelectionController::EXTEND, SelectionController::RIGHT, LineBoundary); + + return VisiblePositionRange(selection.selection().visibleStart(), selection.selection().visibleEnd()); +} + +VisiblePosition AccessibilityRenderObject::visiblePositionForIndex(int index) const +{ + if (!m_renderer) + return VisiblePosition(); + + if (isNativeTextControl()) + return toRenderTextControl(m_renderer)->visiblePositionForIndex(index); + + if (!isTextControl() && !m_renderer->isText()) + return VisiblePosition(); + + Node* node = m_renderer->node(); + if (!node) + return VisiblePosition(); + + if (index <= 0) + return VisiblePosition(node, 0, DOWNSTREAM); + + ExceptionCode ec = 0; + RefPtr<Range> range = Range::create(m_renderer->document()); + range->selectNodeContents(node, ec); + CharacterIterator it(range.get()); + it.advance(index - 1); + return VisiblePosition(it.range()->endContainer(ec), it.range()->endOffset(ec), UPSTREAM); +} + +int AccessibilityRenderObject::indexForVisiblePosition(const VisiblePosition& pos) const +{ + if (isNativeTextControl()) + return toRenderTextControl(m_renderer)->indexForVisiblePosition(pos); + + if (!isTextControl()) + return 0; + + Node* node = m_renderer->node(); + if (!node) + return 0; + + Position indexPosition = pos.deepEquivalent(); + if (!indexPosition.node() || indexPosition.node()->rootEditableElement() != node) + return 0; + + ExceptionCode ec = 0; + RefPtr<Range> range = Range::create(m_renderer->document()); + range->setStart(node, 0, ec); + range->setEnd(indexPosition.node(), indexPosition.deprecatedEditingOffset(), ec); + return TextIterator::rangeLength(range.get()); +} + +IntRect AccessibilityRenderObject::boundsForVisiblePositionRange(const VisiblePositionRange& visiblePositionRange) const +{ + if (visiblePositionRange.isNull()) + return IntRect(); + + // Create a mutable VisiblePositionRange. + VisiblePositionRange range(visiblePositionRange); + IntRect rect1 = range.start.absoluteCaretBounds(); + IntRect rect2 = range.end.absoluteCaretBounds(); + + // readjust for position at the edge of a line. This is to exclude line rect that doesn't need to be accounted in the range bounds + if (rect2.y() != rect1.y()) { + VisiblePosition endOfFirstLine = endOfLine(range.start); + if (range.start == endOfFirstLine) { + range.start.setAffinity(DOWNSTREAM); + rect1 = range.start.absoluteCaretBounds(); + } + if (range.end == endOfFirstLine) { + range.end.setAffinity(UPSTREAM); + rect2 = range.end.absoluteCaretBounds(); + } + } + + IntRect ourrect = rect1; + ourrect.unite(rect2); + + // if the rectangle spans lines and contains multiple text chars, use the range's bounding box intead + if (rect1.bottom() != rect2.bottom()) { + RefPtr<Range> dataRange = makeRange(range.start, range.end); + IntRect boundingBox = dataRange->boundingBox(); + String rangeString = plainText(dataRange.get()); + if (rangeString.length() > 1 && !boundingBox.isEmpty()) + ourrect = boundingBox; + } + +#if PLATFORM(MAC) + return m_renderer->document()->view()->contentsToScreen(ourrect); +#else + return ourrect; +#endif +} + +void AccessibilityRenderObject::setSelectedVisiblePositionRange(const VisiblePositionRange& range) const +{ + if (range.start.isNull() || range.end.isNull()) + return; + + // make selection and tell the document to use it. if it's zero length, then move to that position + if (range.start == range.end) { + m_renderer->document()->frame()->selection()->moveTo(range.start, true); + } + else { + VisibleSelection newSelection = VisibleSelection(range.start, range.end); + m_renderer->document()->frame()->selection()->setSelection(newSelection); + } +} + +VisiblePosition AccessibilityRenderObject::visiblePositionForPoint(const IntPoint& point) const +{ + // convert absolute point to view coordinates + FrameView* frameView = m_renderer->document()->topDocument()->renderer()->view()->frameView(); + RenderView* renderView = topRenderer(); + Node* innerNode = 0; + + // locate the node containing the point + IntPoint pointResult; + while (1) { + IntPoint ourpoint; +#if PLATFORM(MAC) + ourpoint = frameView->screenToContents(point); +#else + ourpoint = point; +#endif + HitTestRequest request(HitTestRequest::ReadOnly | + HitTestRequest::Active); + HitTestResult result(ourpoint); + renderView->layer()->hitTest(request, result); + innerNode = result.innerNode(); + if (!innerNode || !innerNode->renderer()) + return VisiblePosition(); + + pointResult = result.localPoint(); + + // done if hit something other than a widget + RenderObject* renderer = innerNode->renderer(); + if (!renderer->isWidget()) + break; + + // descend into widget (FRAME, IFRAME, OBJECT...) + Widget* widget = static_cast<RenderWidget*>(renderer)->widget(); + if (!widget || !widget->isFrameView()) + break; + Frame* frame = static_cast<FrameView*>(widget)->frame(); + if (!frame) + break; + renderView = frame->document()->renderView(); + frameView = static_cast<FrameView*>(widget); + } + + return innerNode->renderer()->positionForPoint(pointResult); +} + +// NOTE: Consider providing this utility method as AX API +VisiblePosition AccessibilityRenderObject::visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const +{ + if (!isTextControl()) + return VisiblePosition(); + + // lastIndexOK specifies whether the position after the last character is acceptable + if (indexValue >= text().length()) { + if (!lastIndexOK || indexValue > text().length()) + return VisiblePosition(); + } + VisiblePosition position = visiblePositionForIndex(indexValue); + position.setAffinity(DOWNSTREAM); + return position; +} + +// NOTE: Consider providing this utility method as AX API +int AccessibilityRenderObject::index(const VisiblePosition& position) const +{ + if (!isTextControl()) + return -1; + + Node* node = position.deepEquivalent().node(); + if (!node) + return -1; + + for (RenderObject* renderer = node->renderer(); renderer && renderer->node(); renderer = renderer->parent()) { + if (renderer == m_renderer) + return indexForVisiblePosition(position); + } + + return -1; +} + +// Given a line number, the range of characters of the text associated with this accessibility +// object that contains the line number. +PlainTextRange AccessibilityRenderObject::doAXRangeForLine(unsigned lineNumber) const +{ + if (!isTextControl()) + return PlainTextRange(); + + // iterate to the specified line + VisiblePosition visiblePos = visiblePositionForIndex(0); + VisiblePosition savedVisiblePos; + for (unsigned lineCount = lineNumber; lineCount != 0; lineCount -= 1) { + savedVisiblePos = visiblePos; + visiblePos = nextLinePosition(visiblePos, 0); + if (visiblePos.isNull() || visiblePos == savedVisiblePos) + return PlainTextRange(); + } + + // make a caret selection for the marker position, then extend it to the line + // NOTE: ignores results of selection.modify because it returns false when + // starting at an empty line. The resulting selection in that case + // will be a caret at visiblePos. + SelectionController selection; + selection.setSelection(VisibleSelection(visiblePos)); + selection.modify(SelectionController::EXTEND, SelectionController::LEFT, LineBoundary); + selection.modify(SelectionController::EXTEND, SelectionController::RIGHT, LineBoundary); + + // calculate the indices for the selection start and end + VisiblePosition startPosition = selection.selection().visibleStart(); + VisiblePosition endPosition = selection.selection().visibleEnd(); + int index1 = indexForVisiblePosition(startPosition); + int index2 = indexForVisiblePosition(endPosition); + + // add one to the end index for a line break not caused by soft line wrap (to match AppKit) + if (endPosition.affinity() == DOWNSTREAM && endPosition.next().isNotNull()) + index2 += 1; + + // return nil rather than an zero-length range (to match AppKit) + if (index1 == index2) + return PlainTextRange(); + + return PlainTextRange(index1, index2 - index1); +} + +// The composed character range in the text associated with this accessibility object that +// is specified by the given index value. This parameterized attribute returns the complete +// range of characters (including surrogate pairs of multi-byte glyphs) at the given index. +PlainTextRange AccessibilityRenderObject::doAXRangeForIndex(unsigned index) const +{ + if (!isTextControl()) + return PlainTextRange(); + + String elementText = text(); + if (!elementText.length() || index > elementText.length() - 1) + return PlainTextRange(); + + return PlainTextRange(index, 1); +} + +// A substring of the text associated with this accessibility object that is +// specified by the given character range. +String AccessibilityRenderObject::doAXStringForRange(const PlainTextRange& range) const +{ + if (isPasswordField()) + return String(); + + if (range.length == 0) + return ""; + + if (!isTextControl()) + return String(); + + String elementText = text(); + if (range.start + range.length > elementText.length()) + return String(); + + return elementText.substring(range.start, range.length); +} + +// The bounding rectangle of the text associated with this accessibility object that is +// specified by the given range. This is the bounding rectangle a sighted user would see +// on the display screen, in pixels. +IntRect AccessibilityRenderObject::doAXBoundsForRange(const PlainTextRange& range) const +{ + if (isTextControl()) + return boundsForVisiblePositionRange(visiblePositionRangeForRange(range)); + return IntRect(); +} + +AccessibilityObject* AccessibilityRenderObject::accessibilityImageMapHitTest(HTMLAreaElement* area, const IntPoint& point) const +{ + if (!area) + return 0; + + HTMLMapElement *map = static_cast<HTMLMapElement*>(area->parent()); + AccessibilityObject* parent = accessibilityParentForImageMap(map); + if (!parent) + return 0; + + AccessibilityObject::AccessibilityChildrenVector children = parent->children(); + + unsigned count = children.size(); + for (unsigned k = 0; k < count; ++k) { + if (children[k]->elementRect().contains(point)) + return children[k].get(); + } + + return 0; +} + +AccessibilityObject* AccessibilityRenderObject::doAccessibilityHitTest(const IntPoint& point) const +{ + if (!m_renderer || !m_renderer->hasLayer()) + return 0; + + RenderLayer* layer = toRenderBox(m_renderer)->layer(); + + HitTestRequest request(HitTestRequest::ReadOnly | + HitTestRequest::Active); + HitTestResult hitTestResult = HitTestResult(point); + layer->hitTest(request, hitTestResult); + if (!hitTestResult.innerNode()) + return 0; + Node* node = hitTestResult.innerNode()->shadowAncestorNode(); + + if (node->hasTagName(areaTag)) + return accessibilityImageMapHitTest(static_cast<HTMLAreaElement*>(node), point); + + RenderObject* obj = node->renderer(); + if (!obj) + return 0; + + AccessibilityObject *result = obj->document()->axObjectCache()->getOrCreate(obj); + + if (obj->isListBox()) + return static_cast<AccessibilityListBox*>(result)->doAccessibilityHitTest(point); + + if (result->accessibilityIsIgnored()) + result = result->parentObjectUnignored(); + + return result; +} + +AccessibilityObject* AccessibilityRenderObject::focusedUIElement() const +{ + // get the focused node in the page + Page* page = m_renderer->document()->page(); + if (!page) + return 0; + + Document* focusedDocument = page->focusController()->focusedOrMainFrame()->document(); + Node* focusedNode = focusedDocument->focusedNode(); + if (!focusedNode) + focusedNode = focusedDocument; + + RenderObject* focusedNodeRenderer = focusedNode->renderer(); + if (!focusedNodeRenderer) + return 0; + + AccessibilityObject* obj = focusedNodeRenderer->document()->axObjectCache()->getOrCreate(focusedNodeRenderer); + + if (obj->shouldFocusActiveDescendant()) { + if (AccessibilityObject* descendant = obj->activeDescendant()) + obj = descendant; + } + + // the HTML element, for example, is focusable but has an AX object that is ignored + if (obj->accessibilityIsIgnored()) + obj = obj->parentObjectUnignored(); + + return obj; +} + +bool AccessibilityRenderObject::shouldFocusActiveDescendant() const +{ + switch (ariaRoleAttribute()) { + case GroupRole: + case ComboBoxRole: + case ListBoxRole: + case MenuRole: + case MenuBarRole: + case RadioGroupRole: + case RowRole: + case PopUpButtonRole: + case ProgressIndicatorRole: + case ToolbarRole: + case OutlineRole: + /* FIXME: replace these with actual roles when they are added to AccessibilityRole + composite + alert + alertdialog + grid + status + timer + tree + */ + return true; + default: + return false; + } +} + +AccessibilityObject* AccessibilityRenderObject::activeDescendant() const +{ + if (renderer()->node() && !renderer()->node()->isElementNode()) + return 0; + Element* element = static_cast<Element*>(renderer()->node()); + + String activeDescendantAttrStr = element->getAttribute(aria_activedescendantAttr).string(); + if (activeDescendantAttrStr.isNull() || activeDescendantAttrStr.isEmpty()) + return 0; + + Element* target = renderer()->document()->getElementById(activeDescendantAttrStr); + if (!target) + return 0; + + AccessibilityObject* obj = renderer()->document()->axObjectCache()->getOrCreate(target->renderer()); + if (obj->isAccessibilityRenderObject()) + // an activedescendant is only useful if it has a renderer, because that's what's needed to post the notification + return obj; + return 0; +} + + +void AccessibilityRenderObject::handleActiveDescendantChanged() +{ + Element* element = static_cast<Element*>(renderer()->node()); + if (!element) + return; + Document* doc = renderer()->document(); + if (!doc->frame()->selection()->isFocusedAndActive() || doc->focusedNode() != element) + return; + AccessibilityRenderObject* activedescendant = static_cast<AccessibilityRenderObject*>(activeDescendant()); + + if (activedescendant && shouldFocusActiveDescendant()) + doc->axObjectCache()->postNotification(activedescendant->renderer(), "AXFocusedUIElementChanged", true); +} + + +AccessibilityObject* AccessibilityRenderObject::observableObject() const +{ + for (RenderObject* renderer = m_renderer; renderer && renderer->node(); renderer = renderer->parent()) { + if (renderer->isTextControl()) + return renderer->document()->axObjectCache()->getOrCreate(renderer); + } + + return 0; +} + +typedef HashMap<String, AccessibilityRole, CaseFoldingHash> ARIARoleMap; + +static const ARIARoleMap& createARIARoleMap() +{ + struct RoleEntry { + String ariaRole; + AccessibilityRole webcoreRole; + }; + + const RoleEntry roles[] = { + { "button", ButtonRole }, + { "checkbox", CheckBoxRole }, + { "grid", TableRole }, + { "gridcell", CellRole }, + { "columnheader", ColumnHeaderRole }, + { "rowheader", RowHeaderRole }, + { "group", GroupRole }, + { "heading", HeadingRole }, + { "img", ImageRole }, + { "link", WebCoreLinkRole }, + { "listbox", ListBoxRole }, + // "option" isn't here because it may map to different roles depending on the parent element's role + { "menu", MenuRole }, + { "menubar", GroupRole }, + // "menuitem" isn't here because it may map to different roles depending on the parent element's role + { "menuitemcheckbox", MenuItemRole }, + { "menuitemradio", MenuItemRole }, + { "progressbar", ProgressIndicatorRole }, + { "radio", RadioButtonRole }, + { "row", RowRole }, + { "range", SliderRole }, + { "slider", SliderRole }, + { "spinbutton", ProgressIndicatorRole }, + { "textbox", TextAreaRole } + }; + ARIARoleMap& roleMap = *new ARIARoleMap; + + const unsigned numRoles = sizeof(roles) / sizeof(roles[0]); + for (unsigned i = 0; i < numRoles; ++i) + roleMap.set(roles[i].ariaRole, roles[i].webcoreRole); + return roleMap; +} + +static AccessibilityRole ariaRoleToWebCoreRole(String value) +{ + ASSERT(!value.isEmpty() && !value.isNull()); + static const ARIARoleMap& roleMap = createARIARoleMap(); + return roleMap.get(value); +} + +AccessibilityRole AccessibilityRenderObject::determineAriaRoleAttribute() const +{ + String ariaRole = getAttribute(roleAttr).string(); + if (ariaRole.isNull() || ariaRole.isEmpty()) + return UnknownRole; + + AccessibilityRole role = ariaRoleToWebCoreRole(ariaRole); + if (role) + return role; + // selects and listboxes both have options as child roles, but they map to different roles within WebCore + if (equalIgnoringCase(ariaRole,"option")) { + if (parentObjectUnignored()->ariaRoleAttribute() == MenuRole) + return MenuItemRole; + if (parentObjectUnignored()->ariaRoleAttribute() == ListBoxRole) + return ListBoxOptionRole; + } + // an aria "menuitem" may map to MenuButton or MenuItem depending on its parent + if (equalIgnoringCase(ariaRole,"menuitem")) { + if (parentObjectUnignored()->ariaRoleAttribute() == GroupRole) + return MenuButtonRole; + if (parentObjectUnignored()->ariaRoleAttribute() == MenuRole) + return MenuItemRole; + } + + return UnknownRole; +} + +void AccessibilityRenderObject::setAriaRole() +{ + m_ariaRole = determineAriaRoleAttribute(); +} + +AccessibilityRole AccessibilityRenderObject::ariaRoleAttribute() const +{ + return m_ariaRole; +} + +AccessibilityRole AccessibilityRenderObject::roleValue() const +{ + if (!m_renderer) + return UnknownRole; + + Node* node = m_renderer->node(); + AccessibilityRole ariaRole = ariaRoleAttribute(); + if (ariaRole != UnknownRole) + return ariaRole; + + if (node && node->isLink()) { + if (m_renderer->isImage()) + return ImageMapRole; + return WebCoreLinkRole; + } + if (m_renderer->isListMarker()) + return ListMarkerRole; + if (node && node->hasTagName(buttonTag)) + return ButtonRole; + if (m_renderer->isText()) + return StaticTextRole; + if (m_renderer->isImage()) { + if (node && node->hasTagName(inputTag)) + return ButtonRole; + return ImageRole; + } + if (node && node->hasTagName(canvasTag)) + return ImageRole; + + if (m_renderer->isRenderView()) + return WebAreaRole; + + if (m_renderer->isTextField()) + return TextFieldRole; + + if (m_renderer->isTextArea()) + return TextAreaRole; + + if (node && node->hasTagName(inputTag)) { + HTMLInputElement* input = static_cast<HTMLInputElement*>(node); + if (input->inputType() == HTMLInputElement::CHECKBOX) + return CheckBoxRole; + if (input->inputType() == HTMLInputElement::RADIO) + return RadioButtonRole; + if (input->isTextButton()) + return ButtonRole; + } + + if (node && node->hasTagName(buttonTag)) + return ButtonRole; + + if (isFileUploadButton()) + return ButtonRole; + + if (m_renderer->isMenuList()) + return PopUpButtonRole; + + if (headingLevel(m_renderer->node()) != 0) + return HeadingRole; + + if (node && node->hasTagName(ddTag)) + return DefinitionListDefinitionRole; + + if (node && node->hasTagName(dtTag)) + return DefinitionListTermRole; + + if (m_renderer->isBlockFlow() || (node && node->hasTagName(labelTag))) + return GroupRole; + + return UnknownRole; +} + +bool AccessibilityRenderObject::isPresentationalChildOfAriaRole() const +{ + // Walk the parent chain looking for a parent that has presentational children + AccessibilityObject* parent; + for (parent = parentObject(); parent && !parent->ariaRoleHasPresentationalChildren(); parent = parent->parentObject()) + ; + return parent; +} + +bool AccessibilityRenderObject::ariaRoleHasPresentationalChildren() const +{ + switch (m_ariaRole) { + case ButtonRole: + case SliderRole: + case ImageRole: + case ProgressIndicatorRole: + //case SeparatorRole: + return true; + default: + return false; + } +} + +bool AccessibilityRenderObject::canSetFocusAttribute() const +{ + ASSERT(m_renderer); + Node* node = m_renderer->node(); + + // NOTE: It would be more accurate to ask the document whether setFocusedNode() would + // do anything. For example, it setFocusedNode() will do nothing if the current focused + // node will not relinquish the focus. + if (!node || !node->isElementNode()) + return false; + + if (!static_cast<Element*>(node)->isEnabledFormControl()) + return false; + + switch (roleValue()) { + case WebCoreLinkRole: + case ImageMapLinkRole: + case TextFieldRole: + case TextAreaRole: + case ButtonRole: + case PopUpButtonRole: + case CheckBoxRole: + case RadioButtonRole: + return true; + default: + return false; + } +} + +bool AccessibilityRenderObject::canSetValueAttribute() const +{ + if (isWebArea()) + return !isReadOnly(); + + return isTextControl() || isProgressIndicator() || isSlider(); +} + +bool AccessibilityRenderObject::canSetTextRangeAttributes() const +{ + return isTextControl(); +} + +void AccessibilityRenderObject::childrenChanged() +{ + // this method is meant as a quick way of marking dirty + // a portion of the accessibility tree + + markChildrenDirty(); + + if (!m_renderer) + return; + + // Go up the render parent chain, marking children as dirty. + // We can't rely on the accessibilityParent() because it may not exist and we must not create an AX object here either + for (RenderObject* renderParent = m_renderer->parent(); renderParent; renderParent = renderParent->parent()) { + AccessibilityObject* parent = m_renderer->document()->axObjectCache()->get(renderParent); + if (parent && parent->isAccessibilityRenderObject()) + static_cast<AccessibilityRenderObject *>(parent)->markChildrenDirty(); + } +} + +bool AccessibilityRenderObject::canHaveChildren() const +{ + if (!m_renderer) + return false; + + // Elements that should not have children + switch (roleValue()) { + case ImageRole: + case ButtonRole: + case PopUpButtonRole: + case CheckBoxRole: + case RadioButtonRole: + return false; + default: + return true; + } +} + +const AccessibilityObject::AccessibilityChildrenVector& AccessibilityRenderObject::children() +{ + if (m_childrenDirty) { + clearChildren(); + m_childrenDirty = false; + } + + if (!m_haveChildren) + addChildren(); + return m_children; +} + +void AccessibilityRenderObject::addChildren() +{ + // If the need to add more children in addition to existing children arises, + // childrenChanged should have been called, leaving the object with no children. + ASSERT(!m_haveChildren); + + // nothing to add if there is no RenderObject + if (!m_renderer) + return; + + m_haveChildren = true; + + if (!canHaveChildren()) + return; + + // add all unignored acc children + for (RefPtr<AccessibilityObject> obj = firstChild(); obj; obj = obj->nextSibling()) { + if (obj->accessibilityIsIgnored()) { + if (!obj->hasChildren()) + obj->addChildren(); + AccessibilityChildrenVector children = obj->children(); + unsigned length = children.size(); + for (unsigned i = 0; i < length; ++i) + m_children.append(children[i]); + } else + m_children.append(obj); + } + + // for a RenderImage, add the <area> elements as individual accessibility objects + if (m_renderer->isRenderImage()) { + HTMLMapElement* map = toRenderImage(m_renderer)->imageMap(); + if (map) { + for (Node* current = map->firstChild(); current; current = current->traverseNextNode(map)) { + + // add an <area> element for this child if it has a link + if (current->isLink()) { + AccessibilityImageMapLink* areaObject = static_cast<AccessibilityImageMapLink*>(m_renderer->document()->axObjectCache()->getOrCreate(ImageMapLinkRole)); + areaObject->setHTMLAreaElement(static_cast<HTMLAreaElement*>(current)); + areaObject->setHTMLMapElement(map); + areaObject->setParent(this); + + m_children.append(areaObject); + } + } + } + } +} + +void AccessibilityRenderObject::ariaListboxSelectedChildren(AccessibilityChildrenVector& result) +{ + AccessibilityObject* child = firstChild(); + bool isMultiselectable = false; + + Element* element = static_cast<Element*>(renderer()->node()); + if (!element || !element->isElementNode()) // do this check to ensure safety of static_cast above + return; + + String multiselectablePropertyStr = element->getAttribute("aria-multiselectable").string(); + isMultiselectable = equalIgnoringCase(multiselectablePropertyStr, "true"); + + while (child) { + // every child should have aria-role option, and if so, check for selected attribute/state + AccessibilityRole ariaRole = child->ariaRoleAttribute(); + RenderObject* childRenderer = 0; + if (child->isAccessibilityRenderObject()) + childRenderer = static_cast<AccessibilityRenderObject*>(child)->renderer(); + if (childRenderer && ariaRole == ListBoxOptionRole) { + Element* childElement = static_cast<Element*>(childRenderer->node()); + if (childElement && childElement->isElementNode()) { // do this check to ensure safety of static_cast above + String selectedAttrString = childElement->getAttribute("aria-selected").string(); + if (equalIgnoringCase(selectedAttrString, "true")) { + result.append(child); + if (isMultiselectable) + return; + } + } + } + child = child->nextSibling(); + } +} + +void AccessibilityRenderObject::selectedChildren(AccessibilityChildrenVector& result) +{ + ASSERT(result.isEmpty()); + + // only listboxes should be asked for their selected children. + if (ariaRoleAttribute() != ListBoxRole) { // native list boxes would be AccessibilityListBoxes, so only check for aria list boxes + ASSERT_NOT_REACHED(); + return; + } + return ariaListboxSelectedChildren(result); +} + +void AccessibilityRenderObject::ariaListboxVisibleChildren(AccessibilityChildrenVector& result) +{ + if (!hasChildren()) + addChildren(); + + unsigned length = m_children.size(); + for (unsigned i = 0; i < length; i++) { + if (!m_children[i]->isOffScreen()) + result.append(m_children[i]); + } +} + +void AccessibilityRenderObject::visibleChildren(AccessibilityChildrenVector& result) +{ + ASSERT(result.isEmpty()); + + // only listboxes are asked for their visible children. + if (ariaRoleAttribute() != ListBoxRole) { // native list boxes would be AccessibilityListBoxes, so only check for aria list boxes + ASSERT_NOT_REACHED(); + return; + } + return ariaListboxVisibleChildren(result); +} + +const String& AccessibilityRenderObject::actionVerb() const +{ + // FIXME: Need to add verbs for select elements. + DEFINE_STATIC_LOCAL(const String, buttonAction, (AXButtonActionVerb())); + DEFINE_STATIC_LOCAL(const String, textFieldAction, (AXTextFieldActionVerb())); + DEFINE_STATIC_LOCAL(const String, radioButtonAction, (AXRadioButtonActionVerb())); + DEFINE_STATIC_LOCAL(const String, checkedCheckBoxAction, (AXCheckedCheckBoxActionVerb())); + DEFINE_STATIC_LOCAL(const String, uncheckedCheckBoxAction, (AXUncheckedCheckBoxActionVerb())); + DEFINE_STATIC_LOCAL(const String, linkAction, (AXLinkActionVerb())); + DEFINE_STATIC_LOCAL(const String, noAction, ()); + + switch (roleValue()) { + case ButtonRole: + return buttonAction; + case TextFieldRole: + case TextAreaRole: + return textFieldAction; + case RadioButtonRole: + return radioButtonAction; + case CheckBoxRole: + return isChecked() ? checkedCheckBoxAction : uncheckedCheckBoxAction; + case LinkRole: + case WebCoreLinkRole: + return linkAction; + default: + return noAction; + } +} + +void AccessibilityRenderObject::updateBackingStore() +{ + if (!m_renderer) + return; + m_renderer->view()->layoutIfNeeded(); +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityRenderObject.h b/WebCore/accessibility/AccessibilityRenderObject.h new file mode 100644 index 0000000..3fa88a2 --- /dev/null +++ b/WebCore/accessibility/AccessibilityRenderObject.h @@ -0,0 +1,245 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityRenderObject_h +#define AccessibilityRenderObject_h + +#include "AccessibilityObject.h" + +namespace WebCore { + +class AXObjectCache; +class Element; +class Frame; +class FrameView; +class HitTestResult; +class HTMLAnchorElement; +class HTMLAreaElement; +class HTMLElement; +class HTMLLabelElement; +class HTMLMapElement; +class HTMLSelectElement; +class IntPoint; +class IntSize; +class Node; +class RenderObject; +class RenderListBox; +class RenderTextControl; +class RenderView; +class VisibleSelection; +class String; +class Widget; + +class AccessibilityRenderObject : public AccessibilityObject { +protected: + AccessibilityRenderObject(RenderObject*); +public: + static PassRefPtr<AccessibilityRenderObject> create(RenderObject*); + virtual ~AccessibilityRenderObject(); + + bool isAccessibilityRenderObject() const { return true; }; + + virtual bool isAnchor() const; + virtual bool isAttachment() const; + virtual bool isHeading() const; + virtual bool isLink() const; + virtual bool isImageButton() const; + virtual bool isImage() const; + virtual bool isNativeImage() const; + virtual bool isPasswordField() const; + virtual bool isTextControl() const; + virtual bool isNativeTextControl() const; + virtual bool isWebArea() const; + virtual bool isCheckboxOrRadio() const; + virtual bool isFileUploadButton() const; + virtual bool isInputImage() const; + virtual bool isProgressIndicator() const; + virtual bool isSlider() const; + virtual bool isMenuRelated() const; + virtual bool isMenu() const; + virtual bool isMenuBar() const; + virtual bool isMenuButton() const; + virtual bool isMenuItem() const; + virtual bool isControl() const; + virtual bool isFieldset() const; + virtual bool isGroup() const; + + virtual bool isEnabled() const; + virtual bool isSelected() const; + virtual bool isFocused() const; + virtual bool isChecked() const; + virtual bool isHovered() const; + virtual bool isIndeterminate() const; + virtual bool isLoaded() const; + virtual bool isMultiSelect() const; + virtual bool isOffScreen() const; + virtual bool isPressed() const; + virtual bool isReadOnly() const; + virtual bool isVisited() const; + + const AtomicString& getAttribute(const QualifiedName&) const; + virtual bool canSetFocusAttribute() const; + virtual bool canSetTextRangeAttributes() const; + virtual bool canSetValueAttribute() const; + + virtual bool hasIntValue() const; + + virtual bool accessibilityIsIgnored() const; + + static int headingLevel(Node*); + virtual int intValue() const; + virtual float valueForRange() const; + virtual float maxValueForRange() const; + virtual float minValueForRange() const; + virtual int layoutCount() const; + + virtual AccessibilityObject* doAccessibilityHitTest(const IntPoint&) const; + virtual AccessibilityObject* focusedUIElement() const; + virtual AccessibilityObject* firstChild() const; + virtual AccessibilityObject* lastChild() const; + virtual AccessibilityObject* previousSibling() const; + virtual AccessibilityObject* nextSibling() const; + virtual AccessibilityObject* parentObject() const; + virtual AccessibilityObject* parentObjectIfExists() const; + virtual AccessibilityObject* observableObject() const; + virtual void linkedUIElements(AccessibilityChildrenVector&) const; + virtual bool exposesTitleUIElement() const; + virtual AccessibilityObject* titleUIElement() const; + virtual AccessibilityRole ariaRoleAttribute() const; + virtual bool isPresentationalChildOfAriaRole() const; + virtual bool ariaRoleHasPresentationalChildren() const; + void setAriaRole(); + virtual AccessibilityRole roleValue() const; + virtual AXObjectCache* axObjectCache() const; + + virtual Element* actionElement() const; + Element* mouseButtonListener() const; + FrameView* frameViewIfRenderView() const; + virtual Element* anchorElement() const; + AccessibilityObject* menuForMenuButton() const; + AccessibilityObject* menuButtonForMenu() const; + + virtual IntRect boundingBoxRect() const; + virtual IntRect elementRect() const; + virtual IntSize size() const; + + void setRenderer(RenderObject* renderer) { m_renderer = renderer; } + RenderObject* renderer() const { return m_renderer; } + RenderView* topRenderer() const; + RenderTextControl* textControl() const; + Document* document() const; + FrameView* topDocumentFrameView() const; + HTMLLabelElement* labelElementContainer() const; + + virtual KURL url() const; + virtual PlainTextRange selectedTextRange() const; + virtual VisibleSelection selection() const; + virtual String stringValue() const; + virtual String ariaAccessiblityName(const String&) const; + virtual String ariaLabeledByAttribute() const; + virtual String title() const; + virtual String ariaDescribedByAttribute() const; + virtual String accessibilityDescription() const; + virtual String helpText() const; + virtual String textUnderElement() const; + virtual String text() const; + virtual int textLength() const; + virtual PassRefPtr<Range> ariaSelectedTextDOMRange() const; + virtual String selectedText() const; + virtual const AtomicString& accessKey() const; + virtual const String& actionVerb() const; + virtual Widget* widget() const; + virtual Widget* widgetForAttachmentView() const; + virtual void getDocumentLinks(AccessibilityChildrenVector&); + virtual FrameView* documentFrameView() const; + + virtual const AccessibilityChildrenVector& children(); + + virtual void setFocused(bool); + virtual void setSelectedTextRange(const PlainTextRange&); + virtual void setValue(const String&); + + virtual void detach(); + virtual void childrenChanged(); + virtual void addChildren(); + virtual bool canHaveChildren() const; + virtual void selectedChildren(AccessibilityChildrenVector&); + virtual void visibleChildren(AccessibilityChildrenVector&); + virtual bool shouldFocusActiveDescendant() const; + virtual AccessibilityObject* activeDescendant() const; + virtual void handleActiveDescendantChanged(); + + virtual VisiblePositionRange visiblePositionRange() const; + virtual VisiblePositionRange visiblePositionRangeForLine(unsigned) const; + virtual IntRect boundsForVisiblePositionRange(const VisiblePositionRange&) const; + virtual void setSelectedVisiblePositionRange(const VisiblePositionRange&) const; + + virtual VisiblePosition visiblePositionForPoint(const IntPoint&) const; + virtual VisiblePosition visiblePositionForIndex(unsigned indexValue, bool lastIndexOK) const; + virtual int index(const VisiblePosition&) const; + + virtual VisiblePosition visiblePositionForIndex(int) const; + virtual int indexForVisiblePosition(const VisiblePosition&) const; + + virtual PlainTextRange doAXRangeForLine(unsigned) const; + virtual PlainTextRange doAXRangeForIndex(unsigned) const; + + virtual String doAXStringForRange(const PlainTextRange&) const; + virtual IntRect doAXBoundsForRange(const PlainTextRange&) const; + + virtual void updateBackingStore(); + +protected: + RenderObject* m_renderer; + AccessibilityRole m_ariaRole; + mutable bool m_childrenDirty; + + void setRenderObject(RenderObject* renderer) { m_renderer = renderer; } + + virtual bool isDetached() const { return !m_renderer; } + +private: + void ariaListboxSelectedChildren(AccessibilityChildrenVector&); + void ariaListboxVisibleChildren(AccessibilityChildrenVector&); + + Element* menuElementForMenuButton() const; + Element* menuItemElementForMenu() const; + AccessibilityRole determineAriaRoleAttribute() const; + + IntRect checkboxOrRadioRect() const; + void addRadioButtonGroupMembers(AccessibilityChildrenVector& linkedUIElements) const; + AccessibilityObject* internalLinkElement() const; + AccessibilityObject* accessibilityImageMapHitTest(HTMLAreaElement*, const IntPoint&) const; + AccessibilityObject* accessibilityParentForImageMap(HTMLMapElement* map) const; + + void markChildrenDirty() const { m_childrenDirty = true; } +}; + +} // namespace WebCore + +#endif // AccessibilityRenderObject_h diff --git a/WebCore/accessibility/AccessibilityTable.cpp b/WebCore/accessibility/AccessibilityTable.cpp new file mode 100644 index 0000000..6d7dbe2 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTable.cpp @@ -0,0 +1,489 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityTable.h" + +#include "AccessibilityTableCell.h" +#include "AccessibilityTableColumn.h" +#include "AccessibilityTableHeaderContainer.h" +#include "AccessibilityTableRow.h" +#include "AXObjectCache.h" +#include "HTMLNames.h" +#include "HTMLTableElement.h" +#include "HTMLTableCaptionElement.h" +#include "HTMLTableCellElement.h" +#include "RenderObject.h" +#include "RenderTable.h" +#include "RenderTableCell.h" +#include "RenderTableSection.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityTable::AccessibilityTable(RenderObject* renderer) + : AccessibilityRenderObject(renderer), + m_headerContainer(0) +{ +#if ACCESSIBILITY_TABLES + m_isAccessibilityTable = isTableExposableThroughAccessibility(); +#else + m_isAccessibilityTable = false; +#endif +} + +AccessibilityTable::~AccessibilityTable() +{ +} + +PassRefPtr<AccessibilityTable> AccessibilityTable::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityTable(renderer)); +} + +bool AccessibilityTable::isTableExposableThroughAccessibility() +{ + // the following is a heuristic used to determine if a + // <table> should be exposed as an AXTable. The goal + // is to only show "data" tables + + if (!m_renderer || !m_renderer->isTable()) + return false; + + // if the developer assigned an aria role to this, then we shouldn't + // expose it as a table, unless, of course, the aria role is a table + AccessibilityRole ariaRole = ariaRoleAttribute(); + if (ariaRole != UnknownRole) + return false; + + RenderTable* table = static_cast<RenderTable*>(m_renderer); + + // this employs a heuristic to determine if this table should appear. + // Only "data" tables should be exposed as tables. + // Unfortunately, there is no good way to determine the difference + // between a "layout" table and a "data" table + + Node* tableNode = table->node(); + if (!tableNode || !tableNode->hasTagName(tableTag)) + return false; + + // if there is a caption element, summary, THEAD, or TFOOT section, it's most certainly a data table + HTMLTableElement* tableElement = static_cast<HTMLTableElement*>(tableNode); + if (!tableElement->summary().isEmpty() || tableElement->tHead() || tableElement->tFoot() || tableElement->caption()) + return true; + + // if someone used "rules" attribute than the table should appear + if (!tableElement->rules().isEmpty()) + return true; + + // go through the cell's and check for tell-tale signs of "data" table status + // cells have borders, or use attributes like headers, abbr, scope or axis + RenderTableSection* firstBody = table->firstBody(); + if (!firstBody) + return false; + + int numCols = firstBody->numColumns(); + int numRows = firstBody->numRows(); + + // if there's only one cell, it's not a good AXTable candidate + if (numRows == 1 && numCols == 1) + return false; + + // store the background color of the table to check against cell's background colors + RenderStyle* tableStyle = table->style(); + if (!tableStyle) + return false; + Color tableBGColor = tableStyle->backgroundColor(); + + // check enough of the cells to find if the table matches our criteria + // Criteria: + // 1) must have at least one valid cell (and) + // 2) at least half of cells have borders (or) + // 3) at least half of cells have different bg colors than the table, and there is cell spacing + unsigned validCellCount = 0; + unsigned borderedCellCount = 0; + unsigned backgroundDifferenceCellCount = 0; + + for (int row = 0; row < numRows; ++row) { + for (int col = 0; col < numCols; ++col) { + RenderTableCell* cell = firstBody->cellAt(row, col).cell; + if (!cell) + continue; + Node* cellNode = cell->node(); + if (!cellNode) + continue; + + if (cell->width() < 1 || cell->height() < 1) + continue; + + validCellCount++; + + HTMLTableCellElement* cellElement = static_cast<HTMLTableCellElement*>(cellNode); + + // in this case, the developer explicitly assigned a "data" table attribute + if (!cellElement->headers().isEmpty() || !cellElement->abbr().isEmpty() || + !cellElement->axis().isEmpty() || !cellElement->scope().isEmpty()) + return true; + + RenderStyle* renderStyle = cell->style(); + if (!renderStyle) + continue; + + // a cell needs to have matching bordered sides, before it can be considered a bordered cell. + if ((cell->borderTop() > 0 && cell->borderBottom() > 0) || + (cell->borderLeft() > 0 && cell->borderRight() > 0)) + borderedCellCount++; + + // if the cell has a different color from the table and there is cell spacing, + // then it is probably a data table cell (spacing and colors take the place of borders) + Color cellColor = renderStyle->backgroundColor(); + if (table->hBorderSpacing() > 0 && table->vBorderSpacing() > 0 && + tableBGColor != cellColor && cellColor.alpha() != 1) + backgroundDifferenceCellCount++; + + // if we've found 10 "good" cells, we don't need to keep searching + if (borderedCellCount >= 10 || backgroundDifferenceCellCount >= 10) + return true; + } + } + + // if there is less than two valid cells, it's not a data table + if (validCellCount <= 1) + return false; + + // half of the cells had borders, it's a data table + unsigned neededCellCount = validCellCount / 2; + if (borderedCellCount >= neededCellCount) + return true; + + // half had different background colors, it's a data table + if (backgroundDifferenceCellCount >= neededCellCount) + return true; + + return false; +} + +void AccessibilityTable::clearChildren() +{ + m_children.clear(); + m_rows.clear(); + m_columns.clear(); + m_haveChildren = false; +} + +void AccessibilityTable::addChildren() +{ + if (!isDataTable()) { + AccessibilityRenderObject::addChildren(); + return; + } + + ASSERT(!m_haveChildren); + + m_haveChildren = true; + if (!m_renderer || !m_renderer->isTable()) + return; + + RenderTable* table = static_cast<RenderTable*>(m_renderer); + AXObjectCache* axCache = m_renderer->document()->axObjectCache(); + + // go through all the available sections to pull out the rows + // and add them as children + RenderTableSection* tableSection = table->header(); + if (!tableSection) + tableSection = table->firstBody(); + + if (!tableSection) + return; + + RenderTableSection* initialTableSection = tableSection; + + while (tableSection) { + + HashSet<AccessibilityObject*> appendedRows; + + unsigned numRows = tableSection->numRows(); + unsigned numCols = tableSection->numColumns(); + for (unsigned rowIndex = 0; rowIndex < numRows; ++rowIndex) { + for (unsigned colIndex = 0; colIndex < numCols; ++colIndex) { + + RenderTableCell* cell = tableSection->cellAt(rowIndex, colIndex).cell; + if (!cell) + continue; + + AccessibilityObject* rowObject = axCache->getOrCreate(cell->parent()); + if (!rowObject->isTableRow()) + continue; + + AccessibilityTableRow* row = static_cast<AccessibilityTableRow*>(rowObject); + // we need to check every cell for a new row, because cell spans + // can cause us to mess rows if we just check the first column + if (appendedRows.contains(row)) + continue; + + row->setRowIndex((int)m_rows.size()); + m_rows.append(row); + m_children.append(row); + appendedRows.add(row); + } + } + + tableSection = table->sectionBelow(tableSection, true); + } + + // make the columns based on the number of columns in the first body + unsigned length = initialTableSection->numColumns(); + for (unsigned i = 0; i < length; ++i) { + AccessibilityTableColumn* column = static_cast<AccessibilityTableColumn*>(axCache->getOrCreate(ColumnRole)); + column->setColumnIndex((int)i); + column->setParentTable(this); + m_columns.append(column); + m_children.append(column); + } + + AccessibilityObject* headerContainerObject = headerContainer(); + if (headerContainerObject) + m_children.append(headerContainerObject); +} + +AccessibilityObject* AccessibilityTable::headerContainer() +{ + if (m_headerContainer) + return m_headerContainer; + + m_headerContainer = static_cast<AccessibilityTableHeaderContainer*>(axObjectCache()->getOrCreate(TableHeaderContainerRole)); + m_headerContainer->setParentTable(this); + + return m_headerContainer; +} + +AccessibilityObject::AccessibilityChildrenVector& AccessibilityTable::columns() +{ + if (!hasChildren()) + addChildren(); + + return m_columns; +} + +AccessibilityObject::AccessibilityChildrenVector& AccessibilityTable::rows() +{ + if (!hasChildren()) + addChildren(); + + return m_rows; +} + +void AccessibilityTable::rowHeaders(AccessibilityChildrenVector& headers) +{ + if (!m_renderer) + return; + + if (!hasChildren()) + addChildren(); + + unsigned rowCount = m_rows.size(); + for (unsigned k = 0; k < rowCount; ++k) { + AccessibilityObject* header = static_cast<AccessibilityTableRow*>(m_rows[k].get())->headerObject(); + if (!header) + continue; + headers.append(header); + } +} + +void AccessibilityTable::columnHeaders(AccessibilityChildrenVector& headers) +{ + if (!m_renderer) + return; + + if (!hasChildren()) + addChildren(); + + unsigned colCount = m_columns.size(); + for (unsigned k = 0; k < colCount; ++k) { + AccessibilityObject* header = static_cast<AccessibilityTableColumn*>(m_columns[k].get())->headerObject(); + if (!header) + continue; + headers.append(header); + } +} + +void AccessibilityTable::cells(AccessibilityObject::AccessibilityChildrenVector& cells) +{ + if (!m_renderer) + return; + + if (!hasChildren()) + addChildren(); + + int numRows = m_rows.size(); + for (int row = 0; row < numRows; ++row) { + AccessibilityChildrenVector rowChildren = m_rows[row]->children(); + cells.append(rowChildren); + } +} + +unsigned AccessibilityTable::columnCount() +{ + if (!hasChildren()) + addChildren(); + + return m_columns.size(); +} + +unsigned AccessibilityTable::rowCount() +{ + if (!hasChildren()) + addChildren(); + + return m_rows.size(); +} + +AccessibilityTableCell* AccessibilityTable::cellForColumnAndRow(unsigned column, unsigned row) +{ + if (!m_renderer || !m_renderer->isTable()) + return 0; + + if (!hasChildren()) + addChildren(); + + RenderTable* table = static_cast<RenderTable*>(m_renderer); + RenderTableSection* tableSection = table->header(); + if (!tableSection) + tableSection = table->firstBody(); + + RenderTableCell* cell = 0; + unsigned rowCount = 0; + unsigned rowOffset = 0; + while (tableSection) { + + unsigned numRows = tableSection->numRows(); + unsigned numCols = tableSection->numColumns(); + + rowCount += numRows; + + unsigned sectionSpecificRow = row - rowOffset; + if (row < rowCount && column < numCols && sectionSpecificRow < numRows) { + cell = tableSection->cellAt(sectionSpecificRow, column).cell; + + // we didn't find the cell, which means there's spanning happening + // search backwards to find the spanning cell + if (!cell) { + + // first try rows + for (int testRow = sectionSpecificRow-1; testRow >= 0; --testRow) { + cell = tableSection->cellAt(testRow, column).cell; + // cell overlapped. use this one + if (cell && ((cell->row() + (cell->rowSpan()-1)) >= (int)sectionSpecificRow)) + break; + cell = 0; + } + + if (!cell) { + // try cols + for (int testCol = column-1; testCol >= 0; --testCol) { + cell = tableSection->cellAt(sectionSpecificRow, testCol).cell; + // cell overlapped. use this one + if (cell && ((cell->col() + (cell->colSpan()-1)) >= (int)column)) + break; + cell = 0; + } + } + } + } + + if (cell) + break; + + rowOffset += numRows; + // we didn't find anything between the rows we should have + if (row < rowCount) + break; + tableSection = table->sectionBelow(tableSection, true); + } + + if (!cell) + return 0; + + AccessibilityObject* cellObject = axObjectCache()->getOrCreate(cell); + ASSERT(cellObject->isTableCell()); + + return static_cast<AccessibilityTableCell*>(cellObject); +} + +AccessibilityRole AccessibilityTable::roleValue() const +{ + if (!isDataTable()) + return AccessibilityRenderObject::roleValue(); + + return TableRole; +} + +bool AccessibilityTable::accessibilityIsIgnored() const +{ + if (!isDataTable()) + return AccessibilityRenderObject::accessibilityIsIgnored(); + + return false; +} + +String AccessibilityTable::title() const +{ + if (!isDataTable()) + return AccessibilityRenderObject::title(); + + String title; + if (!m_renderer) + return title; + + // see if there is a caption + Node* tableElement = m_renderer->node(); + if (tableElement && tableElement->hasTagName(tableTag)) { + HTMLTableCaptionElement* caption = static_cast<HTMLTableElement*>(tableElement)->caption(); + if (caption) + title = caption->innerText(); + } + + // try the standard + if (title.isEmpty()) + title = AccessibilityRenderObject::title(); + + return title; +} + +bool AccessibilityTable::isDataTable() const +{ + if (!m_renderer) + return false; + + return m_isAccessibilityTable; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityTable.h b/WebCore/accessibility/AccessibilityTable.h new file mode 100644 index 0000000..b6aa3ca --- /dev/null +++ b/WebCore/accessibility/AccessibilityTable.h @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityTable_h +#define AccessibilityTable_h + +#include "AccessibilityRenderObject.h" + +#if PLATFORM(MAC) && (defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD)) +#define ACCESSIBILITY_TABLES 0 +#else +#define ACCESSIBILITY_TABLES 1 +#endif + +namespace WebCore { + +class String; +class AccessibilityTableCell; +class AccessibilityTableHeaderContainer; + +class AccessibilityTable : public AccessibilityRenderObject { + +protected: + AccessibilityTable(RenderObject*); +public: + static PassRefPtr<AccessibilityTable> create(RenderObject*); + virtual ~AccessibilityTable(); + + virtual bool isDataTable() const; + virtual AccessibilityRole roleValue() const; + virtual bool isAriaTable() const { return false; } + + virtual bool accessibilityIsIgnored() const; + + virtual void addChildren(); + virtual void clearChildren(); + + AccessibilityChildrenVector& columns(); + AccessibilityChildrenVector& rows(); + + unsigned columnCount(); + unsigned rowCount(); + + virtual String title() const; + + // all the cells in the table + void cells(AccessibilityChildrenVector&); + virtual AccessibilityTableCell* cellForColumnAndRow(unsigned column, unsigned row); + + void columnHeaders(AccessibilityChildrenVector&); + void rowHeaders(AccessibilityChildrenVector&); + + // an object that contains, as children, all the objects that act as headers + AccessibilityObject* headerContainer(); + +protected: + AccessibilityChildrenVector m_rows; + AccessibilityChildrenVector m_columns; + + AccessibilityTableHeaderContainer* m_headerContainer; + mutable bool m_isAccessibilityTable; + + bool isTableExposableThroughAccessibility(); +}; + +} // namespace WebCore + +#endif // AccessibilityTable_h diff --git a/WebCore/accessibility/AccessibilityTableCell.cpp b/WebCore/accessibility/AccessibilityTableCell.cpp new file mode 100644 index 0000000..4d7cf5a --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableCell.cpp @@ -0,0 +1,162 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityTableCell.h" + +#include "AXObjectCache.h" +#include "HTMLNames.h" +#include "RenderObject.h" +#include "RenderTableCell.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityTableCell::AccessibilityTableCell(RenderObject* renderer) + : AccessibilityRenderObject(renderer) +{ +} + +AccessibilityTableCell::~AccessibilityTableCell() +{ +} + +PassRefPtr<AccessibilityTableCell> AccessibilityTableCell::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityTableCell(renderer)); +} + +bool AccessibilityTableCell::accessibilityIsIgnored() const +{ + if (!isTableCell()) + return AccessibilityRenderObject::accessibilityIsIgnored(); + + return false; +} + +AccessibilityObject* AccessibilityTableCell::parentTable() const +{ + if (!m_renderer || !m_renderer->isTableCell()) + return false; + + return axObjectCache()->getOrCreate(static_cast<RenderTableCell*>(m_renderer)->table()); +} + +bool AccessibilityTableCell::isTableCell() const +{ + AccessibilityObject* table = parentTable(); + if (!table || !table->isDataTable()) + return false; + + return true; +} + +AccessibilityRole AccessibilityTableCell::roleValue() const +{ + if (!isTableCell()) + return AccessibilityRenderObject::roleValue(); + + return CellRole; +} + +void AccessibilityTableCell::rowIndexRange(pair<int, int>& rowRange) +{ + if (!m_renderer || !m_renderer->isTableCell()) + return; + + RenderTableCell* renderCell = static_cast<RenderTableCell*>(m_renderer); + rowRange.first = renderCell->row(); + rowRange.second = renderCell->rowSpan(); + + // since our table might have multiple sections, we have to offset our row appropriately + RenderTableSection* section = renderCell->section(); + RenderTable* table = renderCell->table(); + if (!table || !section) + return; + + RenderTableSection* tableSection = table->header(); + if (!tableSection) + tableSection = table->firstBody(); + + unsigned rowOffset = 0; + while (tableSection) { + if (tableSection == section) + break; + rowOffset += tableSection->numRows(); + tableSection = table->sectionBelow(tableSection, true); + } + + rowRange.first += rowOffset; +} + +void AccessibilityTableCell::columnIndexRange(pair<int, int>& columnRange) +{ + if (!m_renderer || !m_renderer->isTableCell()) + return; + + RenderTableCell* renderCell = static_cast<RenderTableCell*>(m_renderer); + columnRange.first = renderCell->col(); + columnRange.second = renderCell->colSpan(); +} + +AccessibilityObject* AccessibilityTableCell::titleUIElement() const +{ + // Try to find if the first cell in this row is a <th>. If it is, + // then it can act as the title ui element. (This is only in the + // case when the table is not appearing as an AXTable.) + if (isTableCell() || !m_renderer || !m_renderer->isTableCell()) + return 0; + + RenderTableCell* renderCell = static_cast<RenderTableCell*>(m_renderer); + + // If this cell is in the first column, there is no need to continue. + int col = renderCell->col(); + if (!col) + return 0; + + int row = renderCell->row(); + + RenderTableSection* section = renderCell->section(); + if (!section) + return 0; + + RenderTableCell* headerCell = section->cellAt(row, 0).cell; + if (!headerCell || headerCell == renderCell) + return 0; + + Node* cellElement = headerCell->node(); + if (!cellElement || !cellElement->hasTagName(thTag)) + return 0; + + return axObjectCache()->getOrCreate(headerCell); +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityTableCell.h b/WebCore/accessibility/AccessibilityTableCell.h new file mode 100644 index 0000000..dabbce2 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableCell.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityTableCell_h +#define AccessibilityTableCell_h + +#include "AccessibilityRenderObject.h" + +namespace WebCore { + +class AccessibilityTableCell : public AccessibilityRenderObject { + +protected: + AccessibilityTableCell(RenderObject*); +public: + static PassRefPtr<AccessibilityTableCell> create(RenderObject*); + virtual ~AccessibilityTableCell(); + + virtual bool isTableCell() const; + virtual AccessibilityRole roleValue() const; + + virtual bool accessibilityIsIgnored() const; + + // fills in the start location and row span of cell + virtual void rowIndexRange(pair<int, int>& rowRange); + // fills in the start location and column span of cell + virtual void columnIndexRange(pair<int, int>& columnRange); + + // if a table cell is not exposed as a table cell, a TH element can + // serve as its title ui element + AccessibilityObject* titleUIElement() const; + +protected: + virtual AccessibilityObject* parentTable() const; + int m_rowIndex; +}; + +} // namespace WebCore + +#endif // AccessibilityTableCell_h diff --git a/WebCore/accessibility/AccessibilityTableColumn.cpp b/WebCore/accessibility/AccessibilityTableColumn.cpp new file mode 100644 index 0000000..ee79444 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableColumn.cpp @@ -0,0 +1,185 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityTableColumn.h" + +#include "AccessibilityTableCell.h" +#include "AXObjectCache.h" +#include "HTMLNames.h" +#include "RenderTable.h" +#include "RenderTableSection.h" +#include "RenderTableCell.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityTableColumn::AccessibilityTableColumn() + : m_parentTable(0) +{ +} + +AccessibilityTableColumn::~AccessibilityTableColumn() +{ +} + +PassRefPtr<AccessibilityTableColumn> AccessibilityTableColumn::create() +{ + return adoptRef(new AccessibilityTableColumn()); +} + +void AccessibilityTableColumn::setParentTable(AccessibilityTable* table) +{ + m_parentTable = table; + + clearChildren(); +} + +IntRect AccessibilityTableColumn::elementRect() const +{ + // this will be filled in when addChildren is called + return m_columnRect; +} + +IntSize AccessibilityTableColumn::size() const +{ + return elementRect().size(); +} + +const AccessibilityObject::AccessibilityChildrenVector& AccessibilityTableColumn::children() +{ + if (!m_haveChildren) + addChildren(); + return m_children; +} + +AccessibilityObject* AccessibilityTableColumn::headerObject() +{ + if (!m_parentTable) + return 0; + + RenderObject* renderer = m_parentTable->renderer(); + if (!renderer) + return 0; + + if (m_parentTable->isAriaTable()) { + AccessibilityChildrenVector rowChildren = children(); + unsigned childrenCount = rowChildren.size(); + for (unsigned i = 0; i < childrenCount; ++i) { + AccessibilityObject* cell = rowChildren[i].get(); + if (cell->ariaRoleAttribute() == ColumnHeaderRole) + return cell; + } + + return 0; + } + + if (!renderer->isTable()) + return 0; + + RenderTable* table = static_cast<RenderTable*>(renderer); + + AccessibilityObject* headerObject = 0; + + // try the <thead> section first. this doesn't require th tags + headerObject = headerObjectForSection(table->header(), false); + + if (headerObject) + return headerObject; + + // now try for <th> tags in the first body + headerObject = headerObjectForSection(table->firstBody(), true); + + return headerObject; +} + +AccessibilityObject* AccessibilityTableColumn::headerObjectForSection(RenderTableSection* section, bool thTagRequired) +{ + if (!section) + return 0; + + int numCols = section->numColumns(); + if (m_columnIndex >= numCols) + return 0; + + RenderTableCell* cell = 0; + // also account for cells that have a span + for (int testCol = m_columnIndex; testCol >= 0; --testCol) { + RenderTableCell* testCell = section->cellAt(0, testCol).cell; + if (!testCell) + continue; + + // we've reached a cell that doesn't even overlap our column + // it can't be our header + if ((testCell->col() + (testCell->colSpan()-1)) < m_columnIndex) + break; + + Node* node = testCell->node(); + if (!node) + continue; + + if (thTagRequired && !node->hasTagName(thTag)) + continue; + + cell = testCell; + } + + if (!cell) + return 0; + + return m_parentTable->axObjectCache()->getOrCreate(cell); +} + +void AccessibilityTableColumn::addChildren() +{ + ASSERT(!m_haveChildren); + + m_haveChildren = true; + if (!m_parentTable) + return; + + int numRows = m_parentTable->rowCount(); + + for (int i = 0; i < numRows; i++) { + AccessibilityTableCell* cell = m_parentTable->cellForColumnAndRow(m_columnIndex, i); + if (!cell) + continue; + + // make sure the last one isn't the same as this one (rowspan cells) + if (m_children.size() > 0 && m_children.last() == cell) + continue; + + m_children.append(cell); + m_columnRect.unite(cell->elementRect()); + } +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityTableColumn.h b/WebCore/accessibility/AccessibilityTableColumn.h new file mode 100644 index 0000000..6270398 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableColumn.h @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityTableColumn_h +#define AccessibilityTableColumn_h + +#include "AccessibilityObject.h" +#include "AccessibilityTable.h" +#include "IntRect.h" + +namespace WebCore { + +class RenderTableSection; + +class AccessibilityTableColumn : public AccessibilityObject { + +private: + AccessibilityTableColumn(); +public: + static PassRefPtr<AccessibilityTableColumn> create(); + virtual ~AccessibilityTableColumn(); + + void setParentTable(AccessibilityTable*); + virtual AccessibilityObject* parentObject() const { return m_parentTable; } + AccessibilityObject* headerObject(); + + virtual AccessibilityRole roleValue() const { return ColumnRole; } + virtual bool accessibilityIsIgnored() const { return false; } + virtual bool isTableColumn() const { return true; } + + void setColumnIndex(int columnIndex) { m_columnIndex = columnIndex; } + int columnIndex() const { return m_columnIndex; } + + virtual const AccessibilityChildrenVector& children(); + virtual void addChildren(); + + virtual IntSize size() const; + virtual IntRect elementRect() const; + +private: + AccessibilityTable* m_parentTable; + int m_columnIndex; + IntRect m_columnRect; + + AccessibilityObject* headerObjectForSection(RenderTableSection*, bool thTagRequired); +}; + +} // namespace WebCore + +#endif // AccessibilityTableColumn_h diff --git a/WebCore/accessibility/AccessibilityTableHeaderContainer.cpp b/WebCore/accessibility/AccessibilityTableHeaderContainer.cpp new file mode 100644 index 0000000..af9de39 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableHeaderContainer.cpp @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityTableHeaderContainer.h" + +#include "AccessibilityTable.h" +#include "AXObjectCache.h" + +using namespace std; + +namespace WebCore { + +AccessibilityTableHeaderContainer::AccessibilityTableHeaderContainer() + : m_parentTable(0) +{ +} + +AccessibilityTableHeaderContainer::~AccessibilityTableHeaderContainer() +{ +} + +PassRefPtr<AccessibilityTableHeaderContainer> AccessibilityTableHeaderContainer::create() +{ + return adoptRef(new AccessibilityTableHeaderContainer()); +} + +const AccessibilityObject::AccessibilityChildrenVector& AccessibilityTableHeaderContainer::children() +{ + if (!m_haveChildren) + addChildren(); + return m_children; +} + +IntRect AccessibilityTableHeaderContainer::elementRect() const +{ + // this will be filled in when addChildren is called + return m_headerRect; +} + +IntSize AccessibilityTableHeaderContainer::size() const +{ + return elementRect().size(); +} + +void AccessibilityTableHeaderContainer::addChildren() +{ + ASSERT(!m_haveChildren); + + m_haveChildren = true; + if (!m_parentTable || !m_parentTable->isDataTable()) + return; + + static_cast<AccessibilityTable*>(m_parentTable)->columnHeaders(m_children); + + unsigned length = m_children.size(); + for (unsigned k = 0; k < length; ++k) { + m_headerRect.unite(m_children[k]->elementRect()); + } +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityTableHeaderContainer.h b/WebCore/accessibility/AccessibilityTableHeaderContainer.h new file mode 100644 index 0000000..8a9448a --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableHeaderContainer.h @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityTableHeaderContainer_h +#define AccessibilityTableHeaderContainer_h + +#include "AccessibilityObject.h" +#include "AccessibilityTable.h" +#include "IntRect.h" + +namespace WebCore { + +class AccessibilityTableHeaderContainer : public AccessibilityObject { + +private: + AccessibilityTableHeaderContainer(); +public: + static PassRefPtr<AccessibilityTableHeaderContainer> create(); + virtual ~AccessibilityTableHeaderContainer(); + + virtual AccessibilityRole roleValue() const { return TableHeaderContainerRole; } + + void setParentTable(AccessibilityTable* table) { m_parentTable = table; } + virtual AccessibilityObject* parentObject() const { return m_parentTable; } + + virtual bool accessibilityIsIgnored() const { return false; } + + virtual const AccessibilityChildrenVector& children(); + virtual void addChildren(); + + virtual IntSize size() const; + virtual IntRect elementRect() const; + +private: + AccessibilityTable* m_parentTable; + IntRect m_headerRect; + +}; + +} // namespace WebCore + +#endif // AccessibilityTableHeaderContainer_h diff --git a/WebCore/accessibility/AccessibilityTableRow.cpp b/WebCore/accessibility/AccessibilityTableRow.cpp new file mode 100644 index 0000000..9f5f972 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableRow.cpp @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityTableRow.h" + +#include "AccessibilityTableCell.h" +#include "AXObjectCache.h" +#include "HTMLNames.h" +#include "HTMLTableRowElement.h" +#include "RenderObject.h" +#include "RenderTableCell.h" +#include "RenderTableRow.h" + +using namespace std; + +namespace WebCore { + +using namespace HTMLNames; + +AccessibilityTableRow::AccessibilityTableRow(RenderObject* renderer) + : AccessibilityRenderObject(renderer) +{ +} + +AccessibilityTableRow::~AccessibilityTableRow() +{ +} + +PassRefPtr<AccessibilityTableRow> AccessibilityTableRow::create(RenderObject* renderer) +{ + return adoptRef(new AccessibilityTableRow(renderer)); +} + +AccessibilityRole AccessibilityTableRow::roleValue() const +{ + if (!isTableRow()) + return AccessibilityRenderObject::roleValue(); + + return RowRole; +} + +bool AccessibilityTableRow::isTableRow() const +{ + AccessibilityObject* table = parentTable(); + if (!table || !table->isDataTable()) + return false; + + return true; +} + +bool AccessibilityTableRow::accessibilityIsIgnored() const +{ + if (!isTableRow()) + return AccessibilityRenderObject::accessibilityIsIgnored(); + + return false; +} + +AccessibilityObject* AccessibilityTableRow::parentTable() const +{ + if (!m_renderer || !m_renderer->isTableRow()) + return 0; + + return axObjectCache()->getOrCreate(static_cast<RenderTableRow*>(m_renderer)->table()); +} + +AccessibilityObject* AccessibilityTableRow::headerObject() +{ + if (!m_renderer || !m_renderer->isTableRow()) + return 0; + + AccessibilityChildrenVector rowChildren = children(); + if (!rowChildren.size()) + return 0; + + // check the first element in the row to see if it is a TH element + AccessibilityObject* cell = rowChildren[0].get(); + if (!cell->isTableCell()) + return 0; + + RenderObject* cellRenderer = static_cast<AccessibilityTableCell*>(cell)->renderer(); + if (!cellRenderer) + return 0; + + Node* cellNode = cellRenderer->node(); + if (!cellNode || !cellNode->hasTagName(thTag)) + return 0; + + return cell; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/AccessibilityTableRow.h b/WebCore/accessibility/AccessibilityTableRow.h new file mode 100644 index 0000000..29ac935 --- /dev/null +++ b/WebCore/accessibility/AccessibilityTableRow.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityTableRow_h +#define AccessibilityTableRow_h + +#include "AccessibilityRenderObject.h" + +namespace WebCore { + +class AccessibilityTableRow : public AccessibilityRenderObject { + +protected: + AccessibilityTableRow(RenderObject*); +public: + static PassRefPtr<AccessibilityTableRow> create(RenderObject*); + virtual ~AccessibilityTableRow(); + + virtual bool isTableRow() const; + virtual AccessibilityRole roleValue() const; + virtual bool accessibilityIsIgnored() const; + + // retrieves the "row" header (a th tag in the rightmost column) + virtual AccessibilityObject* headerObject(); + virtual AccessibilityObject* parentTable() const; + + void setRowIndex(int rowIndex) { m_rowIndex = rowIndex; } + int rowIndex() const { return m_rowIndex; } + + // allows the table to add other children that may not originate + // in the row, but their col/row spans overlap into it + void appendChild(AccessibilityObject*); + +private: + int m_rowIndex; +}; + +} // namespace WebCore + +#endif // AccessibilityTableRow_h diff --git a/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp b/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp new file mode 100644 index 0000000..d0f1882 --- /dev/null +++ b/WebCore/accessibility/chromium/AXObjectCacheChromium.cpp @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * Copyright (C) 2008 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AXObjectCache.h" + +#include "AccessibilityObject.h" + +namespace WebCore { + +void AXObjectCache::detachWrapper(AccessibilityObject* obj) +{ + // In Chromium, AccessibilityObjects are wrapped lazily. + if (AccessibilityObjectWrapper* wrapper = obj->wrapper()) + wrapper->detach(); +} + +void AXObjectCache::attachWrapper(AccessibilityObject*) +{ + // In Chromium, AccessibilityObjects are wrapped lazily. +} + +void AXObjectCache::postPlatformNotification(AccessibilityObject*, const String&) +{ +} + +void AXObjectCache::handleFocusedUIElementChanged() +{ +} + +} // namespace WebCore diff --git a/WebCore/accessibility/chromium/AccessibilityObjectChromium.cpp b/WebCore/accessibility/chromium/AccessibilityObjectChromium.cpp new file mode 100644 index 0000000..650fb3a --- /dev/null +++ b/WebCore/accessibility/chromium/AccessibilityObjectChromium.cpp @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * Copyright (C) 2008 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return false; +} + +} // namespace WebCore diff --git a/WebCore/accessibility/chromium/AccessibilityObjectWrapper.h b/WebCore/accessibility/chromium/AccessibilityObjectWrapper.h new file mode 100644 index 0000000..d7238e1 --- /dev/null +++ b/WebCore/accessibility/chromium/AccessibilityObjectWrapper.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * Copyright (C) 2008 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityObjectWrapper_h +#define AccessibilityObjectWrapper_h + +namespace WebCore { + + class AccessibilityObject; + class AccessibilityObjectWrapper : public RefCounted<AccessibilityObjectWrapper> { + public: + virtual ~AccessibilityObjectWrapper() {} + virtual void detach() = 0; + bool attached() const { return m_object; } + AccessibilityObject* accessibilityObject() const { return m_object; } + + protected: + AccessibilityObjectWrapper(AccessibilityObject* obj) + : m_object(obj) + { + // FIXME: Remove this once our immediate subclass no longer uses COM. + *addressOfCount() = 0; + } + AccessibilityObjectWrapper() : m_object(0) { } + + AccessibilityObject* m_object; + }; + +} // namespace WebCore + +#endif diff --git a/WebCore/accessibility/gtk/AXObjectCacheAtk.cpp b/WebCore/accessibility/gtk/AXObjectCacheAtk.cpp new file mode 100644 index 0000000..25665b1 --- /dev/null +++ b/WebCore/accessibility/gtk/AXObjectCacheAtk.cpp @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2008 Nuanti Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "AXObjectCache.h" + +#include "AccessibilityObject.h" +#include "AccessibilityObjectWrapperAtk.h" + +namespace WebCore { + +void AXObjectCache::detachWrapper(AccessibilityObject* obj) +{ + webkit_accessible_detach(WEBKIT_ACCESSIBLE(obj->wrapper())); +} + +void AXObjectCache::attachWrapper(AccessibilityObject* obj) +{ + AtkObject* atkObj = ATK_OBJECT(webkit_accessible_new(obj)); + obj->setWrapper(atkObj); + g_object_unref(atkObj); +} + +void AXObjectCache::postPlatformNotification(AccessibilityObject*, const String&) +{ +} + +void AXObjectCache::handleFocusedUIElementChanged() +{ +} + +void AXObjectCache::handleFocusedUIElementChangedWithRenderers(RenderObject* oldFocusedRender, RenderObject* newFocusedRender) +{ + RefPtr<AccessibilityObject> oldObject = getOrCreate(oldFocusedRender); + if (oldObject) { + g_signal_emit_by_name(oldObject->wrapper(), "focus-event", false); + g_signal_emit_by_name(oldObject->wrapper(), "state-change", "focused", false); + } + RefPtr<AccessibilityObject> newObject = getOrCreate(newFocusedRender); + if (newObject) { + g_signal_emit_by_name(newObject->wrapper(), "focus-event", true); + g_signal_emit_by_name(newObject->wrapper(), "state-change", "focused", true); + } +} + +} // namespace WebCore diff --git a/WebCore/accessibility/gtk/AccessibilityObjectAtk.cpp b/WebCore/accessibility/gtk/AccessibilityObjectAtk.cpp new file mode 100644 index 0000000..854816f --- /dev/null +++ b/WebCore/accessibility/gtk/AccessibilityObjectAtk.cpp @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 Apple Ltd. + * Copyright (C) 2008 Alp Toker <alp@atoker.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +#include <glib-object.h> + +#if HAVE(ACCESSIBILITY) + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return false; +} + +AccessibilityObjectWrapper* AccessibilityObject::wrapper() const +{ + return m_wrapper; +} + +void AccessibilityObject::setWrapper(AccessibilityObjectWrapper* wrapper) +{ + if (wrapper == m_wrapper) + return; + + if (m_wrapper) + g_object_unref(m_wrapper); + + m_wrapper = wrapper; + + if (m_wrapper) + g_object_ref(m_wrapper); +} + +} // namespace WebCore + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp b/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp new file mode 100644 index 0000000..141d561 --- /dev/null +++ b/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp @@ -0,0 +1,1189 @@ +/* + * Copyright (C) 2008 Nuanti Ltd. + * Copyright (C) 2009 Igalia S.L. + * + * Portions from Mozilla a11y, copyright as follows: + * + * The Original Code is mozilla.org code. + * + * The Initial Developer of the Original Code is + * Sun Microsystems, Inc. + * Portions created by the Initial Developer are Copyright (C) 2002 + * the Initial Developer. All Rights Reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "AccessibilityObjectWrapperAtk.h" + +#if HAVE(ACCESSIBILITY) + +#include "AXObjectCache.h" +#include "AccessibilityListBox.h" +#include "AccessibilityRenderObject.h" +#include "AtomicString.h" +#include "CString.h" +#include "Document.h" +#include "Editor.h" +#include "Frame.h" +#include "FrameView.h" +#include "HTMLNames.h" +#include "IntRect.h" +#include "NotImplemented.h" + +#include <atk/atk.h> +#include <glib.h> +#include <glib/gprintf.h> +#include <pango/pango.h> + +using namespace WebCore; + +static AccessibilityObject* fallbackObject() +{ + static AXObjectCache* fallbackCache = new AXObjectCache(); + static AccessibilityObject* object = 0; + if (!object) { + // FIXME: using fallbackCache->getOrCreate(ListBoxOptionRole) is a hack + object = fallbackCache->getOrCreate(ListBoxOptionRole); + object->ref(); + } + + return object; +} + +// Used to provide const char* returns. +static const char* returnString(const String& str) +{ + static CString returnedString; + returnedString = str.utf8(); + return returnedString.data(); +} + +static AccessibilityObject* core(WebKitAccessible* accessible) +{ + if (!accessible) + return 0; + + return accessible->m_object; +} + +static AccessibilityObject* core(AtkObject* object) +{ + if (!WEBKIT_IS_ACCESSIBLE(object)) + return 0; + + return core(WEBKIT_ACCESSIBLE(object)); +} + +static AccessibilityObject* core(AtkAction* action) +{ + return core(ATK_OBJECT(action)); +} + +static AccessibilityObject* core(AtkStreamableContent* streamable) +{ + return core(ATK_OBJECT(streamable)); +} + +static AccessibilityObject* core(AtkText* text) +{ + return core(ATK_OBJECT(text)); +} + +static AccessibilityObject* core(AtkEditableText* text) +{ + return core(ATK_OBJECT(text)); +} + +static AccessibilityObject* core(AtkComponent* component) +{ + return core(ATK_OBJECT(component)); +} + +static AccessibilityObject* core(AtkImage* image) +{ + return core(ATK_OBJECT(image)); +} + +static const gchar* webkit_accessible_get_name(AtkObject* object) +{ + return returnString(core(object)->stringValue()); +} + +static const gchar* webkit_accessible_get_description(AtkObject* object) +{ + // TODO: the Mozilla MSAA implementation prepends "Description: " + // Should we do this too? + return returnString(core(object)->accessibilityDescription()); +} + +static AtkObject* webkit_accessible_get_parent(AtkObject* object) +{ + AccessibilityObject* coreParent = core(object)->parentObject(); + + if (!coreParent) + return NULL; + + return coreParent->wrapper(); +} + +static gint webkit_accessible_get_n_children(AtkObject* object) +{ + return core(object)->children().size(); +} + +static AtkObject* webkit_accessible_ref_child(AtkObject* object, gint index) +{ + AccessibilityObject* coreObject = core(object); + + g_return_val_if_fail(index >= 0, NULL); + g_return_val_if_fail(static_cast<size_t>(index) < coreObject->children().size(), NULL); + + AccessibilityObject* coreChild = coreObject->children().at(index).get(); + + if (!coreChild) + return NULL; + + AtkObject* child = coreChild->wrapper(); + // TODO: Should we call atk_object_set_parent() here? + //atk_object_set_parent(child, object); + g_object_ref(child); + + return child; +} + +static gint webkit_accessible_get_index_in_parent(AtkObject* object) +{ + // FIXME: This needs to be implemented. + notImplemented(); + return 0; +} + +static AtkRole atkRole(AccessibilityRole role) +{ + switch (role) { + case UnknownRole: + return ATK_ROLE_UNKNOWN; + case ButtonRole: + return ATK_ROLE_PUSH_BUTTON; + case RadioButtonRole: + return ATK_ROLE_RADIO_BUTTON; + case CheckBoxRole: + return ATK_ROLE_CHECK_BOX; + case SliderRole: + return ATK_ROLE_SLIDER; + case TabGroupRole: + return ATK_ROLE_PAGE_TAB_LIST; + case TextFieldRole: + case TextAreaRole: + return ATK_ROLE_ENTRY; + case StaticTextRole: + return ATK_ROLE_TEXT; + case OutlineRole: + return ATK_ROLE_TREE; + case MenuBarRole: + return ATK_ROLE_MENU_BAR; + case MenuRole: + return ATK_ROLE_MENU; + case MenuItemRole: + return ATK_ROLE_MENU_ITEM; + case ColumnRole: + //return ATK_ROLE_TABLE_COLUMN_HEADER; // Is this right? + return ATK_ROLE_UNKNOWN; // Matches Mozilla + case RowRole: + //return ATK_ROLE_TABLE_ROW_HEADER; // Is this right? + return ATK_ROLE_LIST_ITEM; // Matches Mozilla + case ToolbarRole: + return ATK_ROLE_TOOL_BAR; + case BusyIndicatorRole: + return ATK_ROLE_PROGRESS_BAR; // Is this right? + case ProgressIndicatorRole: + //return ATK_ROLE_SPIN_BUTTON; // Some confusion about this role in AccessibilityRenderObject.cpp + return ATK_ROLE_PROGRESS_BAR; + case WindowRole: + return ATK_ROLE_WINDOW; + case ComboBoxRole: + return ATK_ROLE_COMBO_BOX; + case SplitGroupRole: + return ATK_ROLE_SPLIT_PANE; + case SplitterRole: + return ATK_ROLE_SEPARATOR; + case ColorWellRole: + return ATK_ROLE_COLOR_CHOOSER; + case ListRole: + return ATK_ROLE_LIST; + case ScrollBarRole: + return ATK_ROLE_SCROLL_BAR; + case GridRole: // Is this right? + case TableRole: + return ATK_ROLE_TABLE; + case ApplicationRole: + return ATK_ROLE_APPLICATION; + //case LabelRole: // TODO: should this be covered in the switch? + // return ATK_ROLE_LABEL; + case GroupRole: + case RadioGroupRole: + return ATK_ROLE_PANEL; + case CellRole: + return ATK_ROLE_TABLE_CELL; + case LinkRole: + case WebCoreLinkRole: + case ImageMapLinkRole: + return ATK_ROLE_LINK; + case ImageMapRole: + case ImageRole: + return ATK_ROLE_IMAGE; + case ListMarkerRole: + return ATK_ROLE_TEXT; + case WebAreaRole: + //return ATK_ROLE_HTML_CONTAINER; // Is this right? + return ATK_ROLE_DOCUMENT_FRAME; + case HeadingRole: + return ATK_ROLE_HEADING; + case ListBoxRole: + return ATK_ROLE_LIST; + case ListBoxOptionRole: + return ATK_ROLE_LIST_ITEM; + default: + return ATK_ROLE_UNKNOWN; + } +} + +static AtkRole webkit_accessible_get_role(AtkObject* object) +{ + AccessibilityObject* AXObject = core(object); + + if (!AXObject) + return ATK_ROLE_UNKNOWN; + + // WebCore does not seem to have a role for list items + if (AXObject->isGroup()) { + AccessibilityObject* parent = AXObject->parentObjectUnignored(); + if (parent && parent->isList()) + return ATK_ROLE_LIST_ITEM; + } + + // WebCore does not know about paragraph role + Node* node = static_cast<AccessibilityRenderObject*>(AXObject)->renderer()->node(); + if (node && node->hasTagName(HTMLNames::pTag)) + return ATK_ROLE_PARAGRAPH; + + // Note: Why doesn't WebCore have a password field for this + if (AXObject->isPasswordField()) + return ATK_ROLE_PASSWORD_TEXT; + + return atkRole(AXObject->roleValue()); +} + +static void setAtkStateSetFromCoreObject(AccessibilityObject* coreObject, AtkStateSet* stateSet) +{ + // Please keep the state list in alphabetical order + + if (coreObject->isChecked()) + atk_state_set_add_state(stateSet, ATK_STATE_CHECKED); + + if (!coreObject->isReadOnly()) + atk_state_set_add_state(stateSet, ATK_STATE_EDITABLE); + + if (coreObject->isEnabled()) + atk_state_set_add_state(stateSet, ATK_STATE_ENABLED); + + if (coreObject->canSetFocusAttribute()) + atk_state_set_add_state(stateSet, ATK_STATE_FOCUSABLE); + + if (coreObject->isFocused()) + atk_state_set_add_state(stateSet, ATK_STATE_FOCUSED); + + // TODO: ATK_STATE_HORIZONTAL + + if (coreObject->isIndeterminate()) + atk_state_set_add_state(stateSet, ATK_STATE_INDETERMINATE); + + if (coreObject->isMultiSelect()) + atk_state_set_add_state(stateSet, ATK_STATE_MULTISELECTABLE); + + // TODO: ATK_STATE_OPAQUE + + if (coreObject->isPressed()) + atk_state_set_add_state(stateSet, ATK_STATE_PRESSED); + + // TODO: ATK_STATE_SELECTABLE_TEXT + + // TODO: ATK_STATE_SENSITIVE + + if (coreObject->isSelected()) + atk_state_set_add_state(stateSet, ATK_STATE_SELECTED); + + if (!coreObject->isOffScreen()) + atk_state_set_add_state(stateSet, ATK_STATE_SHOWING); + + // Mutually exclusive, so we group these two + if (coreObject->roleValue() == TextFieldRole) + atk_state_set_add_state(stateSet, ATK_STATE_SINGLE_LINE); + else if (coreObject->roleValue() == TextAreaRole) + atk_state_set_add_state(stateSet, ATK_STATE_MULTI_LINE); + + // TODO: ATK_STATE_SENSITIVE + + // TODO: ATK_STATE_VERTICAL + + if (coreObject->isVisited()) + atk_state_set_add_state(stateSet, ATK_STATE_VISITED); +} + +static gpointer webkit_accessible_parent_class = NULL; + +static AtkStateSet* webkit_accessible_ref_state_set(AtkObject* object) +{ + AtkStateSet* stateSet = ATK_OBJECT_CLASS(webkit_accessible_parent_class)->ref_state_set(object); + AccessibilityObject* coreObject = core(object); + + if (coreObject == fallbackObject()) { + atk_state_set_add_state(stateSet, ATK_STATE_DEFUNCT); + return stateSet; + } + + setAtkStateSetFromCoreObject(coreObject, stateSet); + + return stateSet; +} + +static void webkit_accessible_init(AtkObject* object, gpointer data) +{ + if (ATK_OBJECT_CLASS(webkit_accessible_parent_class)->initialize) + ATK_OBJECT_CLASS(webkit_accessible_parent_class)->initialize(object, data); + + WEBKIT_ACCESSIBLE(object)->m_object = reinterpret_cast<AccessibilityObject*>(data); +} + +static void webkit_accessible_finalize(GObject* object) +{ + // This is a good time to clear the return buffer. + returnString(String()); + + if (G_OBJECT_CLASS(webkit_accessible_parent_class)->finalize) + G_OBJECT_CLASS(webkit_accessible_parent_class)->finalize(object); +} + +static void webkit_accessible_class_init(AtkObjectClass* klass) +{ + GObjectClass* gobjectClass = G_OBJECT_CLASS(klass); + + webkit_accessible_parent_class = g_type_class_peek_parent(klass); + + gobjectClass->finalize = webkit_accessible_finalize; + + klass->initialize = webkit_accessible_init; + klass->get_name = webkit_accessible_get_name; + klass->get_description = webkit_accessible_get_description; + klass->get_parent = webkit_accessible_get_parent; + klass->get_n_children = webkit_accessible_get_n_children; + klass->ref_child = webkit_accessible_ref_child; + klass->get_role = webkit_accessible_get_role; + klass->ref_state_set = webkit_accessible_ref_state_set; +} + +GType +webkit_accessible_get_type(void) +{ + static volatile gsize type_volatile = 0; + + if (g_once_init_enter(&type_volatile)) { + static const GTypeInfo tinfo = { + sizeof(WebKitAccessibleClass), + (GBaseInitFunc)NULL, + (GBaseFinalizeFunc)NULL, + (GClassInitFunc)webkit_accessible_class_init, + (GClassFinalizeFunc)NULL, + NULL, /* class data */ + sizeof(WebKitAccessible), /* instance size */ + 0, /* nb preallocs */ + (GInstanceInitFunc)NULL, + NULL /* value table */ + }; + + GType type = g_type_register_static(ATK_TYPE_OBJECT, + "WebKitAccessible", &tinfo, GTypeFlags(0)); + g_once_init_leave(&type_volatile, type); + } + + return type_volatile; +} + +static gboolean webkit_accessible_action_do_action(AtkAction* action, gint i) +{ + g_return_val_if_fail(i == 0, FALSE); + return core(action)->performDefaultAction(); +} + +static gint webkit_accessible_action_get_n_actions(AtkAction* action) +{ + return 1; +} + +static const gchar* webkit_accessible_action_get_description(AtkAction* action, gint i) +{ + g_return_val_if_fail(i == 0, NULL); + // TODO: Need a way to provide/localize action descriptions. + notImplemented(); + return ""; +} + +static const gchar* webkit_accessible_action_get_keybinding(AtkAction* action, gint i) +{ + g_return_val_if_fail(i == 0, NULL); + // FIXME: Construct a proper keybinding string. + return returnString(core(action)->accessKey().string()); +} + +static const gchar* webkit_accessible_action_get_name(AtkAction* action, gint i) +{ + g_return_val_if_fail(i == 0, NULL); + return returnString(core(action)->actionVerb()); +} + +static void atk_action_interface_init(AtkActionIface* iface) +{ + iface->do_action = webkit_accessible_action_do_action; + iface->get_n_actions = webkit_accessible_action_get_n_actions; + iface->get_description = webkit_accessible_action_get_description; + iface->get_keybinding = webkit_accessible_action_get_keybinding; + iface->get_name = webkit_accessible_action_get_name; +} + +// Text + +static gchar* webkit_accessible_text_get_text(AtkText* text, gint startOffset, gint endOffset) +{ + AccessibilityObject* coreObject = core(text); + String ret; + unsigned start = startOffset; + int length = endOffset - startOffset; + + if (coreObject->isTextControl()) + ret = coreObject->doAXStringForRange(PlainTextRange(start, length)); + else + ret = coreObject->textUnderElement().substring(start, length); + + return g_strdup(ret.utf8().data()); +} + +enum GetTextFunctionType { + AfterOffset, + AtOffset, + BeforeOffset +}; + +typedef bool (*isCharacterAttribute) (PangoLogAttr* attr); + +static inline bool isWordStart(PangoLogAttr* attr) +{ + return attr->is_word_start; +} + +static inline bool isWordEnd(PangoLogAttr* attr) +{ + return attr->is_word_end; +} + +static inline bool isSentenceStart(PangoLogAttr* attr) +{ + return attr->is_sentence_start; +} + +static inline bool isSentenceEnd(PangoLogAttr* attr) +{ + return attr->is_sentence_end; +} + +enum Direction { + DirectionForward, + DirectionBackwards +}; + +static bool findCharacterAttribute(isCharacterAttribute predicateFunction, PangoLogAttr* attributes, Direction direction, int startOffset, int attrsLength, int* resultOffset) +{ + int advanceBy = direction == DirectionForward ? 1 : -1; + + *resultOffset = -1; + + for (int i = startOffset; i >= 0 && i < attrsLength; i += advanceBy) { + if (predicateFunction(attributes + i)) { + *resultOffset = i; + return true; + } + } + + return false; +} + +static bool findCharacterAttributeSkip(isCharacterAttribute predicateFunction, unsigned skip, PangoLogAttr* attributes, Direction direction, int startOffset, int attrsLength, int* resultOffset) +{ + int tmpOffset; + + bool retValue = findCharacterAttribute(predicateFunction, attributes, direction, startOffset, attrsLength, &tmpOffset); + if (skip == 0) { + *resultOffset = tmpOffset; + return retValue; + } + + if (direction == DirectionForward) + tmpOffset++; + else + tmpOffset--; + + return findCharacterAttributeSkip(predicateFunction, skip - 1, attributes, direction, tmpOffset, attrsLength, resultOffset); +} + +static isCharacterAttribute oppositePredicate(isCharacterAttribute predicate) +{ + if (predicate == isWordStart) + return isWordEnd; + if (predicate == isWordEnd) + return isWordStart; + if (predicate == isSentenceStart) + return isSentenceEnd; + if (predicate == isSentenceEnd) + return isSentenceStart; + + g_assert_not_reached(); +} + +static gchar* getTextHelper(GetTextFunctionType getTextFunctionType, AtkText* textObject, gint offset, AtkTextBoundary boundaryType, gint* startOffset, gint* endOffset) +{ + AccessibilityObject* coreObject = core(textObject); + String text; + + *startOffset = *endOffset = -1; + + if (coreObject->isTextControl()) + text = coreObject->text(); + else + text = coreObject->textUnderElement(); + + char* cText = g_strdup(text.utf8().data()); + glong textLength = g_utf8_strlen(cText, -1); + + if (boundaryType == ATK_TEXT_BOUNDARY_CHAR) { + int effectiveOffset; + + switch (getTextFunctionType) { + case AfterOffset: + effectiveOffset = offset + 1; + break; + case BeforeOffset: + effectiveOffset = offset - 1; + break; + case AtOffset: + effectiveOffset = offset; + break; + default: + g_assert_not_reached(); + } + + *startOffset = effectiveOffset; + *endOffset = effectiveOffset + 1; + } else { + PangoLogAttr* attrs = g_new(PangoLogAttr, textLength + 1); + PangoLanguage* language = pango_language_get_default(); + pango_get_log_attrs(cText, -1, -1, language, attrs, textLength + 1); + + isCharacterAttribute predicate; + + if (boundaryType == ATK_TEXT_BOUNDARY_WORD_START) + predicate = isWordStart; + else if (boundaryType == ATK_TEXT_BOUNDARY_WORD_END) + predicate = isWordEnd; + else if (boundaryType == ATK_TEXT_BOUNDARY_SENTENCE_START) + predicate = isSentenceStart; + else if (boundaryType == ATK_TEXT_BOUNDARY_SENTENCE_END) + predicate = isSentenceEnd; + else + // FIXME: bail out for now, since we are missing the LINE + // boundary implementations + goto out; + + switch (boundaryType) { + case ATK_TEXT_BOUNDARY_WORD_START: + case ATK_TEXT_BOUNDARY_SENTENCE_START: + if (getTextFunctionType == AfterOffset) { + // Take the item after the current one in any case + findCharacterAttribute(predicate, attrs, DirectionForward, offset + 1, textLength + 1, startOffset); + findCharacterAttributeSkip(predicate, 1, attrs, DirectionForward, offset + 1, textLength + 1, endOffset); + } else if (getTextFunctionType == AtOffset) { + // Take the item at point if the offset is in an item or + // the item before otherwise + findCharacterAttribute(predicate, attrs, DirectionBackwards, offset, textLength + 1, startOffset); + if (!findCharacterAttribute(predicate, attrs, DirectionForward, offset + 1, textLength + 1, endOffset)) { + findCharacterAttribute(oppositePredicate(predicate), attrs, DirectionForward, offset + 1, textLength + 1, endOffset); + // We want to include the actual end boundary + // here, since *_START would have done so. Advance + // until the end of the string if possible + if (*endOffset != -1 && *endOffset < textLength) + *endOffset = textLength; + } + } else { + // Take the item before the point if the offset is in an + // item, or the the item before that one otherwise + findCharacterAttributeSkip(predicate, 1, attrs, DirectionBackwards, offset, textLength + 1, startOffset); + findCharacterAttribute(predicate, attrs, DirectionBackwards, offset, textLength + 1, endOffset); + } + break; + case ATK_TEXT_BOUNDARY_WORD_END: + case ATK_TEXT_BOUNDARY_SENTENCE_END: + if (getTextFunctionType == AfterOffset) { + // Take the item after the current item if the offset is + // in a item, or the item after that otherwise + findCharacterAttribute(predicate, attrs, DirectionForward, offset, textLength + 1, startOffset); + findCharacterAttributeSkip(predicate, 1, attrs, DirectionForward, offset, textLength + 1, endOffset); + } else if (getTextFunctionType == AtOffset) { + // Take the item at point if the offset is in a item or + // the item after otherwise + if (!findCharacterAttribute(predicate, attrs, DirectionBackwards, offset, textLength + 1, startOffset)) + // No match before offset, take the first opposite match at or before the offset + findCharacterAttribute(oppositePredicate(predicate), attrs, DirectionBackwards, offset, textLength + 1, startOffset); + findCharacterAttribute(predicate, attrs, DirectionForward, offset + 1, textLength + 1, endOffset); + } else { + // Take the item before the point in any case + if (!findCharacterAttributeSkip(predicate, 1, attrs, DirectionBackwards, offset, textLength + 1, startOffset)) { + int tmpOffset; + // No match before offset, take the first opposite match at or before the offset + findCharacterAttribute(predicate, attrs, DirectionBackwards, offset, textLength + 1, &tmpOffset); + findCharacterAttribute(oppositePredicate(predicate), attrs, DirectionBackwards, tmpOffset - 1, textLength + 1, startOffset); + } + findCharacterAttribute(predicate, attrs, DirectionBackwards, offset, textLength + 1, endOffset); + } + break; + default: + g_assert_not_reached(); + } + + g_free(attrs); + } + + out: + if (*startOffset < 0 || *endOffset < 0) { + *startOffset = *endOffset = 0; + return g_strdup(""); + } + + char* start = g_utf8_offset_to_pointer(cText, (glong)*startOffset); + char* end = g_utf8_offset_to_pointer(cText, (glong)*endOffset); + char* resultText = g_strndup(start, end - start); + g_free(cText); + return resultText; +} + +static gchar* webkit_accessible_text_get_text_after_offset(AtkText* text, gint offset, AtkTextBoundary boundaryType, gint* startOffset, gint* endOffset) +{ + return getTextHelper(AfterOffset, text, offset, boundaryType, startOffset, endOffset); +} + +static gchar* webkit_accessible_text_get_text_at_offset(AtkText* text, gint offset, AtkTextBoundary boundaryType, gint* startOffset, gint* endOffset) +{ + return getTextHelper(AtOffset, text, offset, boundaryType, startOffset, endOffset); +} + +static gchar* webkit_accessible_text_get_text_before_offset(AtkText* text, gint offset, AtkTextBoundary boundaryType, gint* startOffset, gint* endOffset) +{ + return getTextHelper(BeforeOffset, text, offset, boundaryType, startOffset, endOffset); +} + +static gunichar webkit_accessible_text_get_character_at_offset(AtkText* text, gint offset) +{ + notImplemented(); + return NULL; +} + +static gint webkit_accessible_text_get_caret_offset(AtkText* text) +{ + // TODO: Verify this for RTL text. + return core(text)->selection().start().offsetInContainerNode(); +} + +static AtkAttributeSet* webkit_accessible_text_get_run_attributes(AtkText* text, gint offset, gint* start_offset, gint* end_offset) +{ + notImplemented(); + return NULL; +} + +static AtkAttributeSet* webkit_accessible_text_get_default_attributes(AtkText* text) +{ + notImplemented(); + return NULL; +} + +static void webkit_accessible_text_get_character_extents(AtkText* text, gint offset, gint* x, gint* y, gint* width, gint* height, AtkCoordType coords) +{ + IntRect extents = core(text)->doAXBoundsForRange(PlainTextRange(offset, 1)); + // FIXME: Use the AtkCoordType + // Requires WebCore::ScrollView::contentsToScreen() to be implemented + +#if 0 + switch(coords) { + case ATK_XY_SCREEN: + extents = core(text)->document()->view()->contentsToScreen(extents); + break; + case ATK_XY_WINDOW: + // No-op + break; + } +#endif + + *x = extents.x(); + *y = extents.y(); + *width = extents.width(); + *height = extents.height(); +} + +static gint webkit_accessible_text_get_character_count(AtkText* text) +{ + AccessibilityObject* coreObject = core(text); + + if (coreObject->isTextControl()) + return coreObject->textLength(); + else + return coreObject->textUnderElement().length(); +} + +static gint webkit_accessible_text_get_offset_at_point(AtkText* text, gint x, gint y, AtkCoordType coords) +{ + // FIXME: Use the AtkCoordType + // TODO: Is it correct to ignore range.length? + IntPoint pos(x, y); + PlainTextRange range = core(text)->doAXRangeForPosition(pos); + return range.start; +} + +static gint webkit_accessible_text_get_n_selections(AtkText* text) +{ + notImplemented(); + return 0; +} + +static gchar* webkit_accessible_text_get_selection(AtkText* text, gint selection_num, gint* start_offset, gint* end_offset) +{ + notImplemented(); + return NULL; +} + +static gboolean webkit_accessible_text_add_selection(AtkText* text, gint start_offset, gint end_offset) +{ + notImplemented(); + return FALSE; +} + +static gboolean webkit_accessible_text_remove_selection(AtkText* text, gint selection_num) +{ + notImplemented(); + return FALSE; +} + +static gboolean webkit_accessible_text_set_selection(AtkText* text, gint selection_num, gint start_offset, gint end_offset) +{ + notImplemented(); + return FALSE; +} + +static gboolean webkit_accessible_text_set_caret_offset(AtkText* text, gint offset) +{ + // TODO: Verify + //core(text)->setSelectedTextRange(PlainTextRange(offset, 0)); + AccessibilityObject* coreObject = core(text); + coreObject->setSelectedVisiblePositionRange(coreObject->visiblePositionRangeForRange(PlainTextRange(offset, 0))); + return TRUE; +} + +static void atk_text_interface_init(AtkTextIface* iface) +{ + iface->get_text = webkit_accessible_text_get_text; + iface->get_text_after_offset = webkit_accessible_text_get_text_after_offset; + iface->get_text_at_offset = webkit_accessible_text_get_text_at_offset; + iface->get_character_at_offset = webkit_accessible_text_get_character_at_offset; + iface->get_text_before_offset = webkit_accessible_text_get_text_before_offset; + iface->get_caret_offset = webkit_accessible_text_get_caret_offset; + iface->get_run_attributes = webkit_accessible_text_get_run_attributes; + iface->get_default_attributes = webkit_accessible_text_get_default_attributes; + iface->get_character_extents = webkit_accessible_text_get_character_extents; + iface->get_character_count = webkit_accessible_text_get_character_count; + iface->get_offset_at_point = webkit_accessible_text_get_offset_at_point; + iface->get_n_selections = webkit_accessible_text_get_n_selections; + iface->get_selection = webkit_accessible_text_get_selection; + + // set methods + iface->add_selection = webkit_accessible_text_add_selection; + iface->remove_selection = webkit_accessible_text_remove_selection; + iface->set_selection = webkit_accessible_text_set_selection; + iface->set_caret_offset = webkit_accessible_text_set_caret_offset; +} + +// EditableText + +static gboolean webkit_accessible_editable_text_set_run_attributes(AtkEditableText* text, AtkAttributeSet* attrib_set, gint start_offset, gint end_offset) +{ + notImplemented(); + return FALSE; +} + +static void webkit_accessible_editable_text_set_text_contents(AtkEditableText* text, const gchar* string) +{ + // FIXME: string nullcheck? + core(text)->setValue(String::fromUTF8(string)); +} + +static void webkit_accessible_editable_text_insert_text(AtkEditableText* text, const gchar* string, gint length, gint* position) +{ + // FIXME: string nullcheck? + + AccessibilityObject* coreObject = core(text); + // FIXME: Not implemented in WebCore + //coreObject->setSelectedTextRange(PlainTextRange(*position, 0)); + //coreObject->setSelectedText(String::fromUTF8(string)); + + if (!coreObject->document() || !coreObject->document()->frame()) + return; + coreObject->setSelectedVisiblePositionRange(coreObject->visiblePositionRangeForRange(PlainTextRange(*position, 0))); + coreObject->setFocused(true); + // FIXME: We should set position to the actual inserted text length, which may be less than that requested. + if (coreObject->document()->frame()->editor()->insertTextWithoutSendingTextEvent(String::fromUTF8(string), false, 0)) + *position += length; +} + +static void webkit_accessible_editable_text_copy_text(AtkEditableText* text, gint start_pos, gint end_pos) +{ + notImplemented(); +} + +static void webkit_accessible_editable_text_cut_text(AtkEditableText* text, gint start_pos, gint end_pos) +{ + notImplemented(); +} + +static void webkit_accessible_editable_text_delete_text(AtkEditableText* text, gint start_pos, gint end_pos) +{ + AccessibilityObject* coreObject = core(text); + // FIXME: Not implemented in WebCore + //coreObject->setSelectedTextRange(PlainTextRange(start_pos, end_pos - start_pos)); + //coreObject->setSelectedText(String()); + + if (!coreObject->document() || !coreObject->document()->frame()) + return; + coreObject->setSelectedVisiblePositionRange(coreObject->visiblePositionRangeForRange(PlainTextRange(start_pos, end_pos - start_pos))); + coreObject->setFocused(true); + coreObject->document()->frame()->editor()->performDelete(); +} + +static void webkit_accessible_editable_text_paste_text(AtkEditableText* text, gint position) +{ + notImplemented(); +} + +static void atk_editable_text_interface_init(AtkEditableTextIface* iface) +{ + iface->set_run_attributes = webkit_accessible_editable_text_set_run_attributes; + iface->set_text_contents = webkit_accessible_editable_text_set_text_contents; + iface->insert_text = webkit_accessible_editable_text_insert_text; + iface->copy_text = webkit_accessible_editable_text_copy_text; + iface->cut_text = webkit_accessible_editable_text_cut_text; + iface->delete_text = webkit_accessible_editable_text_delete_text; + iface->paste_text = webkit_accessible_editable_text_paste_text; +} + +// StreamableContent + +static gint webkit_accessible_streamable_content_get_n_mime_types(AtkStreamableContent* streamable) +{ + notImplemented(); + return 0; +} + +static G_CONST_RETURN gchar* webkit_accessible_streamable_content_get_mime_type(AtkStreamableContent* streamable, gint i) +{ + notImplemented(); + return ""; +} + +static GIOChannel* webkit_accessible_streamable_content_get_stream(AtkStreamableContent* streamable, const gchar* mime_type) +{ + notImplemented(); + return NULL; +} + +static G_CONST_RETURN gchar* webkit_accessible_streamable_content_get_uri(AtkStreamableContent* streamable, const gchar* mime_type) +{ + notImplemented(); + return NULL; +} + +static void atk_streamable_content_interface_init(AtkStreamableContentIface* iface) +{ + iface->get_n_mime_types = webkit_accessible_streamable_content_get_n_mime_types; + iface->get_mime_type = webkit_accessible_streamable_content_get_mime_type; + iface->get_stream = webkit_accessible_streamable_content_get_stream; + iface->get_uri = webkit_accessible_streamable_content_get_uri; +} + +static void contentsToAtk(AccessibilityObject* coreObject, AtkCoordType coordType, IntRect rect, gint* x, gint* y, gint* width = 0, gint* height = 0) +{ + FrameView* frameView = coreObject->documentFrameView(); + + if (frameView) { + switch (coordType) { + case ATK_XY_WINDOW: + rect = frameView->contentsToWindow(rect); + break; + case ATK_XY_SCREEN: + rect = frameView->contentsToScreen(rect); + break; + } + } + + if (x) + *x = rect.x(); + if (y) + *y = rect.y(); + if (width) + *width = rect.width(); + if (height) + *height = rect.height(); +} + +static IntPoint atkToContents(AccessibilityObject* coreObject, AtkCoordType coordType, gint x, gint y) +{ + IntPoint pos(x, y); + + FrameView* frameView = coreObject->documentFrameView(); + if (frameView) { + switch (coordType) { + case ATK_XY_SCREEN: + return frameView->screenToContents(pos); + case ATK_XY_WINDOW: + return frameView->windowToContents(pos); + } + } + + return pos; +} + +static AtkObject* webkit_accessible_component_ref_accessible_at_point(AtkComponent* component, gint x, gint y, AtkCoordType coordType) +{ + IntPoint pos = atkToContents(core(component), coordType, x, y); + AccessibilityObject* target = core(component)->doAccessibilityHitTest(pos); + if (!target) + return NULL; + g_object_ref(target->wrapper()); + return target->wrapper(); +} + +static void webkit_accessible_component_get_extents(AtkComponent* component, gint* x, gint* y, gint* width, gint* height, AtkCoordType coordType) +{ + IntRect rect = core(component)->elementRect(); + contentsToAtk(core(component), coordType, rect, x, y, width, height); +} + +static gboolean webkit_accessible_component_grab_focus(AtkComponent* component) +{ + core(component)->setFocused(true); + return core(component)->isFocused(); +} + +static void atk_component_interface_init(AtkComponentIface *iface) +{ + iface->ref_accessible_at_point = webkit_accessible_component_ref_accessible_at_point; + iface->get_extents = webkit_accessible_component_get_extents; + iface->grab_focus = webkit_accessible_component_grab_focus; +} + +// Image + +static void webkit_accessible_image_get_image_position(AtkImage* image, gint* x, gint* y, AtkCoordType coordType) +{ + IntRect rect = core(image)->elementRect(); + contentsToAtk(core(image), coordType, rect, x, y); +} + +static const gchar* webkit_accessible_image_get_image_description(AtkImage* image) +{ + return returnString(core(image)->accessibilityDescription()); +} + +static void webkit_accessible_image_get_image_size(AtkImage* image, gint* width, gint* height) +{ + IntSize size = core(image)->size(); + + if (width) + *width = size.width(); + if (height) + *height = size.height(); +} + +static void atk_image_interface_init(AtkImageIface* iface) +{ + iface->get_image_position = webkit_accessible_image_get_image_position; + iface->get_image_description = webkit_accessible_image_get_image_description; + iface->get_image_size = webkit_accessible_image_get_image_size; +} + +static const GInterfaceInfo AtkInterfacesInitFunctions[] = { + {(GInterfaceInitFunc)atk_action_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL}, + {(GInterfaceInitFunc)atk_streamable_content_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL}, + {(GInterfaceInitFunc)atk_editable_text_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL}, + {(GInterfaceInitFunc)atk_text_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL}, + {(GInterfaceInitFunc)atk_component_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL}, + {(GInterfaceInitFunc)atk_image_interface_init, + (GInterfaceFinalizeFunc) NULL, NULL} +}; + +enum WAIType { + WAI_ACTION, + WAI_STREAMABLE, + WAI_EDITABLE_TEXT, + WAI_TEXT, + WAI_COMPONENT, + WAI_IMAGE +}; + +static GType GetAtkInterfaceTypeFromWAIType(WAIType type) +{ + switch (type) { + case WAI_ACTION: + return ATK_TYPE_ACTION; + case WAI_STREAMABLE: + return ATK_TYPE_STREAMABLE_CONTENT; + case WAI_EDITABLE_TEXT: + return ATK_TYPE_EDITABLE_TEXT; + case WAI_TEXT: + return ATK_TYPE_TEXT; + case WAI_COMPONENT: + return ATK_TYPE_COMPONENT; + case WAI_IMAGE: + return ATK_TYPE_IMAGE; + } + + return G_TYPE_INVALID; +} + +static guint16 getInterfaceMaskFromObject(AccessibilityObject* coreObject) +{ + guint16 interfaceMask = 0; + + // Streamable is always supported (FIXME: This is wrong) + interfaceMask |= 1 << WAI_STREAMABLE; + + // Component interface is always supported + interfaceMask |= 1 << WAI_COMPONENT; + + // Action + if (!coreObject->actionVerb().isEmpty()) + interfaceMask |= 1 << WAI_ACTION; + + // Text & Editable Text + AccessibilityRole role = coreObject->roleValue(); + + if (role == StaticTextRole) + interfaceMask |= 1 << WAI_TEXT; + + if (coreObject->isAccessibilityRenderObject() && coreObject->isTextControl()) { + if (coreObject->isReadOnly()) + interfaceMask |= 1 << WAI_TEXT; + else + interfaceMask |= 1 << WAI_EDITABLE_TEXT; + } + + // Image + if (coreObject->isImage()) + interfaceMask |= 1 << WAI_IMAGE; + + return interfaceMask; +} + +static const char* getUniqueAccessibilityTypeName(guint16 interfaceMask) +{ +#define WAI_TYPE_NAME_LEN (30) /* Enough for prefix + 5 hex characters (max) */ + static char name[WAI_TYPE_NAME_LEN + 1]; + + g_sprintf(name, "WAIType%x", interfaceMask); + name[WAI_TYPE_NAME_LEN] = '\0'; + + return name; +} + +static GType getAccessibilityTypeFromObject(AccessibilityObject* coreObject) +{ + static const GTypeInfo typeInfo = { + sizeof(WebKitAccessibleClass), + (GBaseInitFunc) NULL, + (GBaseFinalizeFunc) NULL, + (GClassInitFunc) NULL, + (GClassFinalizeFunc) NULL, + NULL, /* class data */ + sizeof(WebKitAccessible), /* instance size */ + 0, /* nb preallocs */ + (GInstanceInitFunc) NULL, + NULL /* value table */ + }; + + guint16 interfaceMask = getInterfaceMaskFromObject(coreObject); + const char* atkTypeName = getUniqueAccessibilityTypeName(interfaceMask); + GType type = g_type_from_name(atkTypeName); + if (type) + return type; + + type = g_type_register_static(WEBKIT_TYPE_ACCESSIBLE, + atkTypeName, + &typeInfo, GTypeFlags(0)); + for (guint i = 0; i < G_N_ELEMENTS(AtkInterfacesInitFunctions); i++) { + if (interfaceMask & (1 << i)) + g_type_add_interface_static(type, + GetAtkInterfaceTypeFromWAIType(static_cast<WAIType>(i)), + &AtkInterfacesInitFunctions[i]); + } + + return type; +} + +WebKitAccessible* webkit_accessible_new(AccessibilityObject* coreObject) +{ + GType type = getAccessibilityTypeFromObject(coreObject); + AtkObject* object = static_cast<AtkObject*>(g_object_new(type, NULL)); + + atk_object_initialize(object, coreObject); + + return WEBKIT_ACCESSIBLE(object); +} + +AccessibilityObject* webkit_accessible_get_accessibility_object(WebKitAccessible* accessible) +{ + return accessible->m_object; +} + +void webkit_accessible_detach(WebKitAccessible* accessible) +{ + ASSERT(accessible->m_object); + + // We replace the WebCore AccessibilityObject with a fallback object that + // provides default implementations to avoid repetitive null-checking after + // detachment. + accessible->m_object = fallbackObject(); +} + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.h b/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.h new file mode 100644 index 0000000..ecfb99e --- /dev/null +++ b/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.h @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2008 Nuanti Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef AccessibilityObjectWrapperAtk_h +#define AccessibilityObjectWrapperAtk_h + +#include <atk/atk.h> + +namespace WebCore { + class AccessibilityObject; +} + +G_BEGIN_DECLS + +#define WEBKIT_TYPE_ACCESSIBLE (webkit_accessible_get_type ()) +#define WEBKIT_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), WEBKIT_TYPE_ACCESSIBLE, WebKitAccessible)) +#define WEBKIT_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), WEBKIT_TYPE_ACCESSIBLE, WebKitAccessibleClass)) +#define WEBKIT_IS_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), WEBKIT_TYPE_ACCESSIBLE)) +#define WEBKIT_IS_ACCESSIBLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), WEBKIT_TYPE_ACCESSIBLE)) +#define WEBKIT_ACCESSIBLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), WEBKIT_TYPE_ACCESSIBLE, WebKitAccessibleClass)) + +typedef struct _WebKitAccessible WebKitAccessible; +typedef struct _WebKitAccessibleClass WebKitAccessibleClass; + +struct _WebKitAccessible +{ + AtkObject parent; + WebCore::AccessibilityObject* m_object; +}; + +struct _WebKitAccessibleClass +{ + AtkObjectClass parent_class; +}; + +GType webkit_accessible_get_type (void) G_GNUC_CONST; + +WebKitAccessible* webkit_accessible_new (WebCore::AccessibilityObject* core_object); + +WebCore::AccessibilityObject* webkit_accessible_get_accessibility_object (WebKitAccessible* accessible); + +void webkit_accessible_detach (WebKitAccessible* accessible); + +G_END_DECLS + +#endif // AccessibilityObjectWrapperAtk_h diff --git a/WebCore/accessibility/mac/AXObjectCacheMac.mm b/WebCore/accessibility/mac/AXObjectCacheMac.mm new file mode 100644 index 0000000..be7968b --- /dev/null +++ b/WebCore/accessibility/mac/AXObjectCacheMac.mm @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#import "config.h" +#import "AXObjectCache.h" + +#if HAVE(ACCESSIBILITY) + +#import "AccessibilityObject.h" +#import "AccessibilityObjectWrapper.h" +#import "RenderObject.h" +#import "WebCoreViewFactory.h" + +#import <wtf/PassRefPtr.h> + +// The simple Cocoa calls in this file don't throw exceptions. + +namespace WebCore { + +void AXObjectCache::detachWrapper(AccessibilityObject* obj) +{ + [obj->wrapper() detach]; + [obj->wrapper() release]; + obj->setWrapper(0); +} + +void AXObjectCache::attachWrapper(AccessibilityObject* obj) +{ + obj->setWrapper([[AccessibilityObjectWrapper alloc] initWithAccessibilityObject:obj]); +} + +void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, const String& message) +{ + if (!obj) + return; + + NSAccessibilityPostNotification(obj->wrapper(), message); +} + +void AXObjectCache::handleFocusedUIElementChanged() +{ + [[WebCoreViewFactory sharedFactory] accessibilityHandleFocusChanged]; +} + +} + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/mac/AccessibilityObjectMac.mm b/WebCore/accessibility/mac/AccessibilityObjectMac.mm new file mode 100644 index 0000000..8f47af0 --- /dev/null +++ b/WebCore/accessibility/mac/AccessibilityObjectMac.mm @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#import "config.h" +#import "AccessibilityObject.h" + +#if HAVE(ACCESSIBILITY) + +#import "AccessibilityObjectWrapper.h" + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return [[wrapper() attachmentView] accessibilityIsIgnored]; +} + +} // WebCore + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/mac/AccessibilityObjectWrapper.h b/WebCore/accessibility/mac/AccessibilityObjectWrapper.h new file mode 100644 index 0000000..3b584a9 --- /dev/null +++ b/WebCore/accessibility/mac/AccessibilityObjectWrapper.h @@ -0,0 +1,60 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AccessibilityObjectWrapper_h +#define AccessibilityObjectWrapper_h + +#import <wtf/RefPtr.h> + +#ifdef __OBJC__ +@class WebCoreTextMarker; +@class WebCoreTextMarkerRange; +#else +class WebCoreTextMarker; +class WebCoreTextMarkerRange; +#endif + +namespace WebCore { + class AccessibilityObject; + class VisiblePosition; +} + +@interface AccessibilityObjectWrapper : NSObject +{ + WebCore::AccessibilityObject* m_object; +} + +- (id)initWithAccessibilityObject:(WebCore::AccessibilityObject*)axObject; +- (void)detach; +- (WebCore::AccessibilityObject*)accessibilityObject; + +- (NSView*)attachmentView; + +@end + +#endif // AccessibilityObjectWrapper_h diff --git a/WebCore/accessibility/mac/AccessibilityObjectWrapper.mm b/WebCore/accessibility/mac/AccessibilityObjectWrapper.mm new file mode 100644 index 0000000..6137e68 --- /dev/null +++ b/WebCore/accessibility/mac/AccessibilityObjectWrapper.mm @@ -0,0 +1,2147 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#import "config.h" +#import "AccessibilityObjectWrapper.h" + +#if HAVE(ACCESSIBILITY) + +#import "AXObjectCache.h" +#import "AccessibilityListBox.h" +#import "AccessibilityList.h" +#import "AccessibilityRenderObject.h" +#import "AccessibilityTable.h" +#import "AccessibilityTableCell.h" +#import "AccessibilityTableRow.h" +#import "AccessibilityTableColumn.h" +#import "ColorMac.h" +#import "Frame.h" +#import "HTMLAnchorElement.h" +#import "HTMLAreaElement.h" +#import "HTMLImageElement.h" +#import "HTMLInputElement.h" +#import "HTMLTextAreaElement.h" +#import "LocalizedStrings.h" +#import "RenderTextControl.h" +#import "RenderView.h" +#import "RenderWidget.h" +#import "SelectionController.h" +#import "SimpleFontData.h" +#import "TextIterator.h" +#import "WebCoreFrameView.h" +#import "WebCoreObjCExtras.h" +#import "WebCoreViewFactory.h" +#import "htmlediting.h" +#import "visible_units.h" +#import <runtime/InitializeThreading.h> + +using namespace WebCore; +using namespace HTMLNames; +using namespace std; + +// Cell Tables +#ifndef NSAccessibilitySelectedCellsAttribute +#define NSAccessibilitySelectedCellsAttribute @"AXSelectedCells" +#endif + +#ifndef NSAccessibilityVisibleCellsAttribute +#define NSAccessibilityVisibleCellsAttribute @"AXVisibleCells" +#endif + +#ifndef NSAccessibilityRowHeaderUIElementsAttribute +#define NSAccessibilityRowHeaderUIElementsAttribute @"AXRowHeaderUIElements" +#endif + +#ifndef NSAccessibilityRowIndexRangeAttribute +#define NSAccessibilityRowIndexRangeAttribute @"AXRowIndexRange" +#endif + +#ifndef NSAccessibilityColumnIndexRangeAttribute +#define NSAccessibilityColumnIndexRangeAttribute @"AXColumnIndexRange" +#endif + +#ifndef NSAccessibilityCellForColumnAndRowParameterizedAttribute +#define NSAccessibilityCellForColumnAndRowParameterizedAttribute @"AXCellForColumnAndRow" +#endif + +#ifndef NSAccessibilityCellRole +#define NSAccessibilityCellRole @"AXCell" +#endif + +// Lists +#ifndef NSAccessibilityContentListSubrole +#define NSAccessibilityContentListSubrole @"AXContentList" +#endif + +#ifndef NSAccessibilityDefinitionListSubrole +#define NSAccessibilityDefinitionListSubrole @"AXDefinitionList" +#endif + +// Miscellaneous +#ifndef NSAccessibilityBlockQuoteLevelAttribute +#define NSAccessibilityBlockQuoteLevelAttribute @"AXBlockQuoteLevel" +#endif + +#ifndef NSAccessibilityAccessKeyAttribute +#define NSAccessibilityAccessKeyAttribute @"AXAccessKey" +#endif + +#ifdef BUILDING_ON_TIGER +typedef unsigned NSUInteger; +#endif + +@interface NSObject (WebKitAccessibilityArrayCategory) + +- (NSUInteger)accessibilityIndexOfChild:(id)child; +- (NSUInteger)accessibilityArrayAttributeCount:(NSString *)attribute; +- (NSArray *)accessibilityArrayAttributeValues:(NSString *)attribute index:(NSUInteger)index maxCount:(NSUInteger)maxCount; + +@end + +@implementation AccessibilityObjectWrapper + ++ (void)initialize +{ + JSC::initializeThreading(); +#ifndef BUILDING_ON_TIGER + WebCoreObjCFinalizeOnMainThread(self); +#endif +} + +- (id)initWithAccessibilityObject:(AccessibilityObject*)axObject +{ + [super init]; + + m_object = axObject; + return self; +} + +- (void)unregisterUniqueIdForUIElement +{ + [[WebCoreViewFactory sharedFactory] unregisterUniqueIdForUIElement:self]; +} + +- (void)detach +{ + // Send unregisterUniqueIdForUIElement unconditionally because if it is + // ever accidently not done (via other bugs in our AX implementation) you + // end up with a crash like <rdar://problem/4273149>. It is safe and not + // expensive to send even if the object is not registered. + [self unregisterUniqueIdForUIElement]; + m_object = 0; +} + +- (AccessibilityObject*)accessibilityObject +{ + return m_object; +} + +- (NSView*)attachmentView +{ + ASSERT(m_object->isAttachment()); + Widget* widget = m_object->widgetForAttachmentView(); + if (!widget) + return nil; + return widget->platformWidget(); +} + +static WebCoreTextMarker* textMarkerForVisiblePosition(const VisiblePosition& visiblePos) +{ + if (visiblePos.isNull()) + return nil; + + Position deepPos = visiblePos.deepEquivalent(); + Node* domNode = deepPos.node(); + ASSERT(domNode); + if (!domNode) + return nil; + + if (domNode->isHTMLElement()) { + InputElement* inputElement = toInputElement(static_cast<Element*>(domNode)); + if (inputElement && inputElement->isPasswordField()) + return nil; + } + + // locate the renderer, which must exist for a visible dom node + RenderObject* renderer = domNode->renderer(); + ASSERT(renderer); + + // find or create an accessibility object for this renderer + AXObjectCache* cache = renderer->document()->axObjectCache(); + RefPtr<AccessibilityObject> obj = cache->getOrCreate(renderer); + + // create a text marker, adding an ID for the AccessibilityObject if needed + TextMarkerData textMarkerData; + + // The compiler can add padding to this struct. + // This memory must be bzero'd so instances of TextMarkerData can be tested for byte-equivalence. + bzero(&textMarkerData, sizeof(TextMarkerData)); + textMarkerData.axID = obj.get()->axObjectID(); + textMarkerData.node = domNode; + textMarkerData.offset = deepPos.deprecatedEditingOffset(); + textMarkerData.affinity = visiblePos.affinity(); + return [[WebCoreViewFactory sharedFactory] textMarkerWithBytes:&textMarkerData length:sizeof(textMarkerData)]; +} + +static VisiblePosition visiblePositionForTextMarker(WebCoreTextMarker* textMarker) +{ + TextMarkerData textMarkerData; + + if (![[WebCoreViewFactory sharedFactory] getBytes:&textMarkerData fromTextMarker:textMarker length:sizeof(textMarkerData)]) + return VisiblePosition(); + + VisiblePosition visiblePos = VisiblePosition(textMarkerData.node, textMarkerData.offset, textMarkerData.affinity); + Position deepPos = visiblePos.deepEquivalent(); + if (deepPos.isNull()) + return VisiblePosition(); + + RenderObject* renderer = deepPos.node()->renderer(); + if (!renderer) + return VisiblePosition(); + + AXObjectCache* cache = renderer->document()->axObjectCache(); + if (!cache->isIDinUse(textMarkerData.axID)) + return VisiblePosition(); + + if (deepPos.node() != textMarkerData.node || deepPos.deprecatedEditingOffset() != textMarkerData.offset) + return VisiblePosition(); + + return visiblePos; +} + +static VisiblePosition visiblePositionForStartOfTextMarkerRange(WebCoreTextMarkerRange* textMarkerRange) +{ + return visiblePositionForTextMarker([[WebCoreViewFactory sharedFactory] startOfTextMarkerRange:textMarkerRange]); +} + +static VisiblePosition visiblePositionForEndOfTextMarkerRange(WebCoreTextMarkerRange* textMarkerRange) +{ + return visiblePositionForTextMarker([[WebCoreViewFactory sharedFactory] endOfTextMarkerRange:textMarkerRange]); +} + +static WebCoreTextMarkerRange* textMarkerRangeFromMarkers(WebCoreTextMarker* textMarker1, WebCoreTextMarker* textMarker2) +{ + if (!textMarker1 || !textMarker2) + return nil; + + return [[WebCoreViewFactory sharedFactory] textMarkerRangeWithStart:textMarker1 end:textMarker2]; +} + +static void AXAttributeStringSetFont(NSMutableAttributedString* attrString, NSString* attribute, NSFont* font, NSRange range) +{ + NSDictionary* dict; + + if (font) { + dict = [NSDictionary dictionaryWithObjectsAndKeys: + [font fontName] , NSAccessibilityFontNameKey, + [font familyName] , NSAccessibilityFontFamilyKey, + [font displayName] , NSAccessibilityVisibleNameKey, + [NSNumber numberWithFloat:[font pointSize]] , NSAccessibilityFontSizeKey, + nil]; + + [attrString addAttribute:attribute value:dict range:range]; + } else + [attrString removeAttribute:attribute range:range]; + +} + +static CGColorRef CreateCGColorIfDifferent(NSColor* nsColor, CGColorRef existingColor) +{ + // get color information assuming NSDeviceRGBColorSpace + NSColor* rgbColor = [nsColor colorUsingColorSpaceName:NSDeviceRGBColorSpace]; + if (rgbColor == nil) + rgbColor = [NSColor blackColor]; + CGFloat components[4]; + [rgbColor getRed:&components[0] green:&components[1] blue:&components[2] alpha:&components[3]]; + + // create a new CGColorRef to return + CGColorSpaceRef cgColorSpace = CGColorSpaceCreateDeviceRGB(); + CGColorRef cgColor = CGColorCreate(cgColorSpace, components); + CGColorSpaceRelease(cgColorSpace); + + // check for match with existing color + if (existingColor && CGColorEqualToColor(cgColor, existingColor)) { + CGColorRelease(cgColor); + cgColor = 0; + } + + return cgColor; +} + +static void AXAttributeStringSetColor(NSMutableAttributedString* attrString, NSString* attribute, NSColor* color, NSRange range) +{ + if (color) { + CGColorRef existingColor = (CGColorRef) [attrString attribute:attribute atIndex:range.location effectiveRange:nil]; + CGColorRef cgColor = CreateCGColorIfDifferent(color, existingColor); + if (cgColor) { + [attrString addAttribute:attribute value:(id)cgColor range:range]; + CGColorRelease(cgColor); + } + } else + [attrString removeAttribute:attribute range:range]; +} + +static void AXAttributeStringSetNumber(NSMutableAttributedString* attrString, NSString* attribute, NSNumber* number, NSRange range) +{ + if (number) + [attrString addAttribute:attribute value:number range:range]; + else + [attrString removeAttribute:attribute range:range]; +} + +static void AXAttributeStringSetStyle(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) +{ + RenderStyle* style = renderer->style(); + + // set basic font info + AXAttributeStringSetFont(attrString, NSAccessibilityFontTextAttribute, style->font().primaryFont()->getNSFont(), range); + + // set basic colors + AXAttributeStringSetColor(attrString, NSAccessibilityForegroundColorTextAttribute, nsColor(style->color()), range); + AXAttributeStringSetColor(attrString, NSAccessibilityBackgroundColorTextAttribute, nsColor(style->backgroundColor()), range); + + // set super/sub scripting + EVerticalAlign alignment = style->verticalAlign(); + if (alignment == SUB) + AXAttributeStringSetNumber(attrString, NSAccessibilitySuperscriptTextAttribute, [NSNumber numberWithInt:(-1)], range); + else if (alignment == SUPER) + AXAttributeStringSetNumber(attrString, NSAccessibilitySuperscriptTextAttribute, [NSNumber numberWithInt:1], range); + else + [attrString removeAttribute:NSAccessibilitySuperscriptTextAttribute range:range]; + + // set shadow + if (style->textShadow()) + AXAttributeStringSetNumber(attrString, NSAccessibilityShadowTextAttribute, [NSNumber numberWithBool:YES], range); + else + [attrString removeAttribute:NSAccessibilityShadowTextAttribute range:range]; + + // set underline and strikethrough + int decor = style->textDecorationsInEffect(); + if ((decor & UNDERLINE) == 0) { + [attrString removeAttribute:NSAccessibilityUnderlineTextAttribute range:range]; + [attrString removeAttribute:NSAccessibilityUnderlineColorTextAttribute range:range]; + } + + if ((decor & LINE_THROUGH) == 0) { + [attrString removeAttribute:NSAccessibilityStrikethroughTextAttribute range:range]; + [attrString removeAttribute:NSAccessibilityStrikethroughColorTextAttribute range:range]; + } + + if ((decor & (UNDERLINE | LINE_THROUGH)) != 0) { + // find colors using quirk mode approach (strict mode would use current + // color for all but the root line box, which would use getTextDecorationColors) + Color underline, overline, linethrough; + renderer->getTextDecorationColors(decor, underline, overline, linethrough); + + if ((decor & UNDERLINE) != 0) { + AXAttributeStringSetNumber(attrString, NSAccessibilityUnderlineTextAttribute, [NSNumber numberWithBool:YES], range); + AXAttributeStringSetColor(attrString, NSAccessibilityUnderlineColorTextAttribute, nsColor(underline), range); + } + + if ((decor & LINE_THROUGH) != 0) { + AXAttributeStringSetNumber(attrString, NSAccessibilityStrikethroughTextAttribute, [NSNumber numberWithBool:YES], range); + AXAttributeStringSetColor(attrString, NSAccessibilityStrikethroughColorTextAttribute, nsColor(linethrough), range); + } + } +} + +static int blockquoteLevel(RenderObject* renderer) +{ + if (!renderer) + return 0; + + int result = 0; + for (Node* node = renderer->node(); node; node = node->parent()) { + if (node->hasTagName(blockquoteTag)) + result += 1; + } + + return result; +} + +static void AXAttributeStringSetBlockquoteLevel(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) +{ + int quoteLevel = blockquoteLevel(renderer); + + if (quoteLevel) + [attrString addAttribute:NSAccessibilityBlockQuoteLevelAttribute value:[NSNumber numberWithInt:quoteLevel] range:range]; + else + [attrString removeAttribute:NSAccessibilityBlockQuoteLevelAttribute range:range]; +} + +static void AXAttributeStringSetSpelling(NSMutableAttributedString* attrString, Node* node, int offset, NSRange range) +{ + Vector<DocumentMarker> markers = node->renderer()->document()->markersForNode(node); + Vector<DocumentMarker>::iterator markerIt = markers.begin(); + + unsigned endOffset = (unsigned)offset + range.length; + for ( ; markerIt != markers.end(); markerIt++) { + DocumentMarker marker = *markerIt; + + if (marker.type != DocumentMarker::Spelling) + continue; + + if (marker.endOffset <= (unsigned)offset) + continue; + + if (marker.startOffset > endOffset) + break; + + // add misspelling attribute for the intersection of the marker and the range + int rStart = range.location + (marker.startOffset - offset); + int rLength = MIN(marker.endOffset, endOffset) - marker.startOffset; + NSRange spellRange = NSMakeRange(rStart, rLength); + AXAttributeStringSetNumber(attrString, NSAccessibilityMisspelledTextAttribute, [NSNumber numberWithBool:YES], spellRange); + + if (marker.endOffset > endOffset + 1) + break; + } +} + +static void AXAttributeStringSetHeadingLevel(NSMutableAttributedString* attrString, RenderObject* renderer, NSRange range) +{ + int parentHeadingLevel = AccessibilityRenderObject::headingLevel(renderer->parent()->node()); + + if (parentHeadingLevel) + [attrString addAttribute:@"AXHeadingLevel" value:[NSNumber numberWithInt:parentHeadingLevel] range:range]; + else + [attrString removeAttribute:@"AXHeadingLevel" range:range]; +} + +static AccessibilityObject* AXLinkElementForNode(Node* node) +{ + RenderObject* obj = node->renderer(); + if (!obj) + return 0; + + RefPtr<AccessibilityObject> axObj = obj->document()->axObjectCache()->getOrCreate(obj); + Element* anchor = axObj->anchorElement(); + if (!anchor) + return 0; + + RenderObject* anchorRenderer = anchor->renderer(); + if (!anchorRenderer) + return 0; + + return anchorRenderer->document()->axObjectCache()->getOrCreate(anchorRenderer); +} + +static void AXAttributeStringSetElement(NSMutableAttributedString* attrString, NSString* attribute, AccessibilityObject* object, NSRange range) +{ + if (object && object->isAccessibilityRenderObject()) { + // make a serialiazable AX object + + RenderObject* renderer = static_cast<AccessibilityRenderObject*>(object)->renderer(); + if (!renderer) + return; + + Document* doc = renderer->document(); + if (!doc) + return; + + AXObjectCache* cache = doc->axObjectCache(); + if (!cache) + return; + + AXUIElementRef axElement = [[WebCoreViewFactory sharedFactory] AXUIElementForElement:object->wrapper()]; + if (axElement) { + [attrString addAttribute:attribute value:(id)axElement range:range]; + CFRelease(axElement); + } + } else + [attrString removeAttribute:attribute range:range]; +} + +static void AXAttributedStringAppendText(NSMutableAttributedString* attrString, Node* node, int offset, const UChar* chars, int length) +{ + // skip invisible text + if (!node->renderer()) + return; + + // easier to calculate the range before appending the string + NSRange attrStringRange = NSMakeRange([attrString length], length); + + // append the string from this node + [[attrString mutableString] appendString:[NSString stringWithCharacters:chars length:length]]; + + // add new attributes and remove irrelevant inherited ones + // NOTE: color attributes are handled specially because -[NSMutableAttributedString addAttribute: value: range:] does not merge + // identical colors. Workaround is to not replace an existing color attribute if it matches what we are adding. This also means + // we cannot just pre-remove all inherited attributes on the appended string, so we have to remove the irrelevant ones individually. + + // remove inherited attachment from prior AXAttributedStringAppendReplaced + [attrString removeAttribute:NSAccessibilityAttachmentTextAttribute range:attrStringRange]; + + // set new attributes + AXAttributeStringSetStyle(attrString, node->renderer(), attrStringRange); + AXAttributeStringSetHeadingLevel(attrString, node->renderer(), attrStringRange); + AXAttributeStringSetBlockquoteLevel(attrString, node->renderer(), attrStringRange); + AXAttributeStringSetElement(attrString, NSAccessibilityLinkTextAttribute, AXLinkElementForNode(node), attrStringRange); + + // do spelling last because it tends to break up the range + AXAttributeStringSetSpelling(attrString, node, offset, attrStringRange); +} + +static NSString* nsStringForReplacedNode(Node* replacedNode) +{ + // we should always be given a rendered node and a replaced node, but be safe + // replaced nodes are either attachments (widgets) or images + if (!replacedNode || !replacedNode->renderer() || !replacedNode->renderer()->isReplaced() || replacedNode->isTextNode()) { + ASSERT_NOT_REACHED(); + return nil; + } + + // create an AX object, but skip it if it is not supposed to be seen + RefPtr<AccessibilityObject> obj = replacedNode->renderer()->document()->axObjectCache()->getOrCreate(replacedNode->renderer()); + if (obj->accessibilityIsIgnored()) + return nil; + + // use the attachmentCharacter to represent the replaced node + const UniChar attachmentChar = NSAttachmentCharacter; + return [NSString stringWithCharacters:&attachmentChar length:1]; +} + +- (NSAttributedString*)doAXAttributedStringForTextMarkerRange:(WebCoreTextMarkerRange*)textMarkerRange +{ + // extract the start and end VisiblePosition + VisiblePosition startVisiblePosition = visiblePositionForStartOfTextMarkerRange(textMarkerRange); + if (startVisiblePosition.isNull()) + return nil; + + VisiblePosition endVisiblePosition = visiblePositionForEndOfTextMarkerRange(textMarkerRange); + if (endVisiblePosition.isNull()) + return nil; + + // iterate over the range to build the AX attributed string + NSMutableAttributedString* attrString = [[NSMutableAttributedString alloc] init]; + TextIterator it(makeRange(startVisiblePosition, endVisiblePosition).get()); + while (!it.atEnd()) { + // locate the node and starting offset for this range + int exception = 0; + Node* node = it.range()->startContainer(exception); + ASSERT(node == it.range()->endContainer(exception)); + int offset = it.range()->startOffset(exception); + + // non-zero length means textual node, zero length means replaced node (AKA "attachments" in AX) + if (it.length() != 0) { + AXAttributedStringAppendText(attrString, node, offset, it.characters(), it.length()); + } else { + Node* replacedNode = node->childNode(offset); + NSString *attachmentString = nsStringForReplacedNode(replacedNode); + if (attachmentString) { + NSRange attrStringRange = NSMakeRange([attrString length], [attachmentString length]); + + // append the placeholder string + [[attrString mutableString] appendString:attachmentString]; + + // remove all inherited attributes + [attrString setAttributes:nil range:attrStringRange]; + + // add the attachment attribute + AccessibilityObject* obj = replacedNode->renderer()->document()->axObjectCache()->getOrCreate(replacedNode->renderer()); + AXAttributeStringSetElement(attrString, NSAccessibilityAttachmentTextAttribute, obj, attrStringRange); + } + } + it.advance(); + } + + return [attrString autorelease]; +} + +static WebCoreTextMarkerRange* textMarkerRangeFromVisiblePositions(VisiblePosition startPosition, VisiblePosition endPosition) +{ + WebCoreTextMarker* startTextMarker = textMarkerForVisiblePosition(startPosition); + WebCoreTextMarker* endTextMarker = textMarkerForVisiblePosition(endPosition); + return textMarkerRangeFromMarkers(startTextMarker, endTextMarker); +} + +- (NSArray*)accessibilityActionNames +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + static NSArray* actionElementActions = [[NSArray alloc] initWithObjects: NSAccessibilityPressAction, NSAccessibilityShowMenuAction, nil]; + static NSArray* defaultElementActions = [[NSArray alloc] initWithObjects: NSAccessibilityShowMenuAction, nil]; + static NSArray* menuElementActions = [[NSArray alloc] initWithObjects: NSAccessibilityCancelAction, NSAccessibilityPressAction, nil]; + + NSArray *actions; + if (m_object->actionElement()) + actions = actionElementActions; + else if (m_object->isMenuRelated()) + actions = menuElementActions; + else if (m_object->isAttachment()) + actions = [[self attachmentView] accessibilityActionNames]; + else + actions = defaultElementActions; + + return actions; +} + +- (NSArray*)accessibilityAttributeNames +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if (m_object->isAttachment()) + return [[self attachmentView] accessibilityAttributeNames]; + + static NSArray* attributes = nil; + static NSArray* anchorAttrs = nil; + static NSArray* webAreaAttrs = nil; + static NSArray* textAttrs = nil; + static NSArray* listBoxAttrs = nil; + static NSArray* rangeAttrs = nil; + static NSArray* commonMenuAttrs = nil; + static NSArray* menuAttrs = nil; + static NSArray* menuBarAttrs = nil; + static NSArray* menuItemAttrs = nil; + static NSArray* menuButtonAttrs = nil; + static NSArray* controlAttrs = nil; + static NSArray* tableAttrs = nil; + static NSArray* tableRowAttrs = nil; + static NSArray* tableColAttrs = nil; + static NSArray* tableCellAttrs = nil; + static NSArray* groupAttrs = nil; + static NSArray* inputImageAttrs = nil; + static NSArray* passwordFieldAttrs = nil; + NSMutableArray* tempArray; + if (attributes == nil) { + attributes = [[NSArray alloc] initWithObjects: NSAccessibilityRoleAttribute, + NSAccessibilitySubroleAttribute, + NSAccessibilityRoleDescriptionAttribute, + NSAccessibilityChildrenAttribute, + NSAccessibilityHelpAttribute, + NSAccessibilityParentAttribute, + NSAccessibilityPositionAttribute, + NSAccessibilitySizeAttribute, + NSAccessibilityTitleAttribute, + NSAccessibilityDescriptionAttribute, + NSAccessibilityValueAttribute, + NSAccessibilityFocusedAttribute, + NSAccessibilityEnabledAttribute, + NSAccessibilityWindowAttribute, + @"AXSelectedTextMarkerRange", + @"AXStartTextMarker", + @"AXEndTextMarker", + @"AXVisited", + NSAccessibilityLinkedUIElementsAttribute, + NSAccessibilitySelectedAttribute, + NSAccessibilityBlockQuoteLevelAttribute, + NSAccessibilityTopLevelUIElementAttribute, + nil]; + } + if (commonMenuAttrs == nil) { + commonMenuAttrs = [[NSArray alloc] initWithObjects: NSAccessibilityRoleAttribute, + NSAccessibilityRoleDescriptionAttribute, + NSAccessibilityChildrenAttribute, + NSAccessibilityParentAttribute, + NSAccessibilityEnabledAttribute, + NSAccessibilityPositionAttribute, + NSAccessibilitySizeAttribute, + nil]; + } + if (anchorAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityURLAttribute]; + [tempArray addObject:NSAccessibilityAccessKeyAttribute]; + anchorAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (webAreaAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:@"AXLinkUIElements"]; + [tempArray addObject:@"AXLoaded"]; + [tempArray addObject:@"AXLayoutCount"]; + [tempArray addObject:NSAccessibilityURLAttribute]; + webAreaAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (textAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityNumberOfCharactersAttribute]; + [tempArray addObject:NSAccessibilitySelectedTextAttribute]; + [tempArray addObject:NSAccessibilitySelectedTextRangeAttribute]; + [tempArray addObject:NSAccessibilityVisibleCharacterRangeAttribute]; + [tempArray addObject:NSAccessibilityInsertionPointLineNumberAttribute]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + [tempArray addObject:NSAccessibilityAccessKeyAttribute]; + textAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (listBoxAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilitySelectedChildrenAttribute]; + [tempArray addObject:NSAccessibilityVisibleChildrenAttribute]; + [tempArray addObject:NSAccessibilityOrientationAttribute]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + [tempArray addObject:NSAccessibilityAccessKeyAttribute]; + listBoxAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (rangeAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityTopLevelUIElementAttribute]; + [tempArray addObject:NSAccessibilityValueAttribute]; + [tempArray addObject:NSAccessibilityMinValueAttribute]; + [tempArray addObject:NSAccessibilityMaxValueAttribute]; + rangeAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (menuBarAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:commonMenuAttrs]; + [tempArray addObject:NSAccessibilitySelectedChildrenAttribute]; + [tempArray addObject:NSAccessibilityVisibleChildrenAttribute]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + menuBarAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (menuAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:commonMenuAttrs]; + [tempArray addObject:NSAccessibilitySelectedChildrenAttribute]; + [tempArray addObject:NSAccessibilityVisibleChildrenAttribute]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + menuAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (menuItemAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:commonMenuAttrs]; + [tempArray addObject:NSAccessibilityTitleAttribute]; + [tempArray addObject:NSAccessibilityHelpAttribute]; + [tempArray addObject:NSAccessibilitySelectedAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemCmdCharAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemCmdVirtualKeyAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemCmdGlyphAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemCmdModifiersAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemMarkCharAttribute]; + [tempArray addObject:(NSString*)kAXMenuItemPrimaryUIElementAttribute]; + [tempArray addObject:NSAccessibilityServesAsTitleForUIElementsAttribute]; + menuItemAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (menuButtonAttrs == nil) { + menuButtonAttrs = [[NSArray alloc] initWithObjects:NSAccessibilityRoleAttribute, + NSAccessibilityRoleDescriptionAttribute, + NSAccessibilityParentAttribute, + NSAccessibilityPositionAttribute, + NSAccessibilitySizeAttribute, + NSAccessibilityWindowAttribute, + NSAccessibilityTopLevelUIElementAttribute, + NSAccessibilityEnabledAttribute, + NSAccessibilityFocusedAttribute, + NSAccessibilityTitleAttribute, + NSAccessibilityChildrenAttribute, nil]; + } + if (controlAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + [tempArray addObject:NSAccessibilityAccessKeyAttribute]; + controlAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (tableAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityRowsAttribute]; + [tempArray addObject:NSAccessibilityVisibleRowsAttribute]; + [tempArray addObject:NSAccessibilityColumnsAttribute]; + [tempArray addObject:NSAccessibilityVisibleColumnsAttribute]; + [tempArray addObject:NSAccessibilityVisibleCellsAttribute]; + [tempArray addObject:(NSString *)kAXColumnHeaderUIElementsAttribute]; + [tempArray addObject:NSAccessibilityRowHeaderUIElementsAttribute]; + [tempArray addObject:NSAccessibilityHeaderAttribute]; + tableAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (tableRowAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityIndexAttribute]; + tableRowAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (tableColAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityIndexAttribute]; + [tempArray addObject:NSAccessibilityHeaderAttribute]; + [tempArray addObject:NSAccessibilityRowsAttribute]; + [tempArray addObject:NSAccessibilityVisibleRowsAttribute]; + tableColAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (tableCellAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityRowIndexRangeAttribute]; + [tempArray addObject:NSAccessibilityColumnIndexRangeAttribute]; + tableCellAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (groupAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + groupAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (inputImageAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:controlAttrs]; + [tempArray addObject:NSAccessibilityURLAttribute]; + [tempArray addObject:NSAccessibilityAccessKeyAttribute]; + inputImageAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (passwordFieldAttrs == nil) { + tempArray = [[NSMutableArray alloc] initWithArray:attributes]; + [tempArray addObject:NSAccessibilityTitleUIElementAttribute]; + passwordFieldAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + + if (m_object->isPasswordField()) + return passwordFieldAttrs; + + if (m_object->isWebArea()) + return webAreaAttrs; + + if (m_object->isTextControl()) + return textAttrs; + + if (m_object->isAnchor() || m_object->isImage() || m_object->isLink()) + return anchorAttrs; + + if (m_object->isDataTable()) + return tableAttrs; + if (m_object->isTableRow()) + return tableRowAttrs; + if (m_object->isTableColumn()) + return tableColAttrs; + if (m_object->isTableCell()) + return tableCellAttrs; + + if (m_object->isListBox() || m_object->isList()) + return listBoxAttrs; + + if (m_object->isProgressIndicator() || m_object->isSlider()) + return rangeAttrs; + + if (m_object->isInputImage()) + return inputImageAttrs; + + if (m_object->isControl()) + return controlAttrs; + + if (m_object->isGroup()) + return groupAttrs; + + if (m_object->isMenu()) + return menuAttrs; + if (m_object->isMenuBar()) + return menuBarAttrs; + if (m_object->isMenuButton()) + return menuButtonAttrs; + if (m_object->isMenuItem()) + return menuItemAttrs; + + return attributes; +} + +- (VisiblePositionRange)visiblePositionRangeForTextMarkerRange:(WebCoreTextMarkerRange*) textMarkerRange +{ + return VisiblePositionRange(visiblePositionForStartOfTextMarkerRange(textMarkerRange), visiblePositionForEndOfTextMarkerRange(textMarkerRange)); +} + +- (NSArray*)renderWidgetChildren +{ + Widget* widget = m_object->widget(); + if (!widget) + return nil; + return [(widget->platformWidget()) accessibilityAttributeValue: NSAccessibilityChildrenAttribute]; +} + +static void convertToVector(NSArray* array, AccessibilityObject::AccessibilityChildrenVector& vector) +{ + unsigned length = [array count]; + vector.reserveInitialCapacity(length); + for (unsigned i = 0; i < length; ++i) { + AccessibilityObject* obj = [[array objectAtIndex:i] accessibilityObject]; + if (obj) + vector.append(obj); + } +} + +static NSMutableArray* convertToNSArray(const AccessibilityObject::AccessibilityChildrenVector& vector) +{ + unsigned length = vector.size(); + NSMutableArray* array = [NSMutableArray arrayWithCapacity: length]; + for (unsigned i = 0; i < length; ++i) { + AccessibilityObjectWrapper* wrapper = vector[i]->wrapper(); + ASSERT(wrapper); + if (wrapper) { + // we want to return the attachment view instead of the object representing the attachment. + // otherwise, we get palindrome errors in the AX hierarchy + if (vector[i]->isAttachment() && [wrapper attachmentView]) + [array addObject:[wrapper attachmentView]]; + else + [array addObject:wrapper]; + } + } + return array; +} + +- (WebCoreTextMarkerRange*)textMarkerRangeForSelection +{ + VisibleSelection selection = m_object->selection(); + if (selection.isNone()) + return nil; + return textMarkerRangeFromVisiblePositions(selection.visibleStart(), selection.visibleEnd()); +} + +- (NSValue*)position +{ + IntRect rect = m_object->elementRect(); + + // The Cocoa accessibility API wants the lower-left corner. + NSPoint point = NSMakePoint(rect.x(), rect.bottom()); + FrameView* frameView = m_object->documentFrameView(); + if (frameView) { + NSView* view = frameView->documentView(); + point = [[view window] convertBaseToScreen: [view convertPoint: point toView:nil]]; + } + + return [NSValue valueWithPoint: point]; +} + +typedef HashMap<int, NSString*> AccessibilityRoleMap; + +static const AccessibilityRoleMap& createAccessibilityRoleMap() +{ + struct RoleEntry { + AccessibilityRole value; + NSString* string; + }; + + static const RoleEntry roles[] = { + { UnknownRole, NSAccessibilityUnknownRole }, + { ButtonRole, NSAccessibilityButtonRole }, + { RadioButtonRole, NSAccessibilityRadioButtonRole }, + { CheckBoxRole, NSAccessibilityCheckBoxRole }, + { SliderRole, NSAccessibilitySliderRole }, + { TabGroupRole, NSAccessibilityTabGroupRole }, + { TextFieldRole, NSAccessibilityTextFieldRole }, + { StaticTextRole, NSAccessibilityStaticTextRole }, + { TextAreaRole, NSAccessibilityTextAreaRole }, + { ScrollAreaRole, NSAccessibilityScrollAreaRole }, + { PopUpButtonRole, NSAccessibilityPopUpButtonRole }, + { MenuButtonRole, NSAccessibilityMenuButtonRole }, + { TableRole, NSAccessibilityTableRole }, + { ApplicationRole, NSAccessibilityApplicationRole }, + { GroupRole, NSAccessibilityGroupRole }, + { RadioGroupRole, NSAccessibilityRadioGroupRole }, + { ListRole, NSAccessibilityListRole }, + { ScrollBarRole, NSAccessibilityScrollBarRole }, + { ValueIndicatorRole, NSAccessibilityValueIndicatorRole }, + { ImageRole, NSAccessibilityImageRole }, + { MenuBarRole, NSAccessibilityMenuBarRole }, + { MenuRole, NSAccessibilityMenuRole }, + { MenuItemRole, NSAccessibilityMenuItemRole }, + { ColumnRole, NSAccessibilityColumnRole }, + { RowRole, NSAccessibilityRowRole }, + { ToolbarRole, NSAccessibilityToolbarRole }, + { BusyIndicatorRole, NSAccessibilityBusyIndicatorRole }, + { ProgressIndicatorRole, NSAccessibilityProgressIndicatorRole }, + { WindowRole, NSAccessibilityWindowRole }, + { DrawerRole, NSAccessibilityDrawerRole }, + { SystemWideRole, NSAccessibilitySystemWideRole }, + { OutlineRole, NSAccessibilityOutlineRole }, + { IncrementorRole, NSAccessibilityIncrementorRole }, + { BrowserRole, NSAccessibilityBrowserRole }, + { ComboBoxRole, NSAccessibilityComboBoxRole }, + { SplitGroupRole, NSAccessibilitySplitGroupRole }, + { SplitterRole, NSAccessibilitySplitterRole }, + { ColorWellRole, NSAccessibilityColorWellRole }, + { GrowAreaRole, NSAccessibilityGrowAreaRole }, + { SheetRole, NSAccessibilitySheetRole }, + { HelpTagRole, NSAccessibilityHelpTagRole }, + { MatteRole, NSAccessibilityMatteRole }, + { RulerRole, NSAccessibilityRulerRole }, + { RulerMarkerRole, NSAccessibilityRulerMarkerRole }, + { LinkRole, NSAccessibilityLinkRole }, +#ifndef BUILDING_ON_TIGER + { DisclosureTriangleRole, NSAccessibilityDisclosureTriangleRole }, + { GridRole, NSAccessibilityGridRole }, +#endif + { WebCoreLinkRole, NSAccessibilityLinkRole }, + { ImageMapLinkRole, NSAccessibilityLinkRole }, + { ImageMapRole, @"AXImageMap" }, + { ListMarkerRole, @"AXListMarker" }, + { WebAreaRole, @"AXWebArea" }, + { HeadingRole, @"AXHeading" }, + { ListBoxRole, NSAccessibilityListRole }, + { ListBoxOptionRole, NSAccessibilityStaticTextRole }, +#if ACCESSIBILITY_TABLES + { CellRole, NSAccessibilityCellRole }, +#else + { CellRole, NSAccessibilityGroupRole }, +#endif + { TableHeaderContainerRole, NSAccessibilityGroupRole }, + { DefinitionListDefinitionRole, NSAccessibilityGroupRole }, + { DefinitionListTermRole, NSAccessibilityGroupRole } + + }; + AccessibilityRoleMap& roleMap = *new AccessibilityRoleMap; + + const unsigned numRoles = sizeof(roles) / sizeof(roles[0]); + for (unsigned i = 0; i < numRoles; ++i) + roleMap.set(roles[i].value, roles[i].string); + return roleMap; +} + +static NSString* roleValueToNSString(AccessibilityRole value) +{ + ASSERT(value); + static const AccessibilityRoleMap& roleMap = createAccessibilityRoleMap(); + return roleMap.get(value); +} + +- (NSString*)role +{ + if (m_object->isAttachment()) + return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityRoleAttribute]; + NSString* string = roleValueToNSString(m_object->roleValue()); + if (string != nil) + return string; + return NSAccessibilityUnknownRole; +} + +- (NSString*)subrole +{ + if (m_object->isPasswordField()) + return NSAccessibilitySecureTextFieldSubrole; + + if (m_object->isAttachment()) { + NSView* attachView = [self attachmentView]; + if ([[attachView accessibilityAttributeNames] containsObject:NSAccessibilitySubroleAttribute]) { + return [attachView accessibilityAttributeValue:NSAccessibilitySubroleAttribute]; + } + } + + if (m_object->isList()) { + AccessibilityList* listObject = static_cast<AccessibilityList*>(m_object); + if (listObject->isUnorderedList() || listObject->isOrderedList()) + return NSAccessibilityContentListSubrole; + if (listObject->isDefinitionList()) + return NSAccessibilityDefinitionListSubrole; + } + + return nil; +} + +- (NSString*)roleDescription +{ + if (!m_object) + return nil; + + // attachments have the AXImage role, but a different subrole + if (m_object->isAttachment()) + return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityRoleDescriptionAttribute]; + + // FIXME 3447564: It would be better to call some AppKit API to get these strings + // (which would be the best way to localize them) + + NSString* axRole = [self role]; + if ([axRole isEqualToString:NSAccessibilityButtonRole]) + return NSAccessibilityRoleDescription(NSAccessibilityButtonRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityPopUpButtonRole]) + return NSAccessibilityRoleDescription(NSAccessibilityPopUpButtonRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityStaticTextRole]) + return NSAccessibilityRoleDescription(NSAccessibilityStaticTextRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityImageRole]) + return NSAccessibilityRoleDescription(NSAccessibilityImageRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityGroupRole]) + return NSAccessibilityRoleDescription(NSAccessibilityGroupRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityCheckBoxRole]) + return NSAccessibilityRoleDescription(NSAccessibilityCheckBoxRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityRadioButtonRole]) + return NSAccessibilityRoleDescription(NSAccessibilityRadioButtonRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityTextFieldRole]) + return NSAccessibilityRoleDescription(NSAccessibilityTextFieldRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityTextAreaRole]) + return NSAccessibilityRoleDescription(NSAccessibilityTextAreaRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityListRole]) + return NSAccessibilityRoleDescription(NSAccessibilityListRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityTableRole]) + return NSAccessibilityRoleDescription(NSAccessibilityTableRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityRowRole]) + return NSAccessibilityRoleDescription(NSAccessibilityRowRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityColumnRole]) + return NSAccessibilityRoleDescription(NSAccessibilityColumnRole, [self subrole]); + + if ([axRole isEqualToString:NSAccessibilityCellRole]) + return NSAccessibilityRoleDescription(NSAccessibilityCellRole, [self subrole]); + + if ([axRole isEqualToString:@"AXWebArea"]) + return AXWebAreaText(); + + if ([axRole isEqualToString:@"AXLink"]) + return AXLinkText(); + + if ([axRole isEqualToString:@"AXListMarker"]) + return AXListMarkerText(); + + if ([axRole isEqualToString:@"AXImageMap"]) + return AXImageMapText(); + + if ([axRole isEqualToString:@"AXHeading"]) + return AXHeadingText(); + + if ([axRole isEqualToString:(NSString*)kAXMenuBarItemRole] || + [axRole isEqualToString:NSAccessibilityMenuRole]) + return nil; + + if ([axRole isEqualToString:NSAccessibilityMenuButtonRole]) + return NSAccessibilityRoleDescription(NSAccessibilityMenuButtonRole, [self subrole]); + + return NSAccessibilityRoleDescription(NSAccessibilityUnknownRole, nil); +} + +// FIXME: split up this function in a better way. +// suggestions: Use a hash table that maps attribute names to function calls, +// or maybe pointers to member functions +- (id)accessibilityAttributeValue:(NSString*)attributeName +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if ([attributeName isEqualToString: NSAccessibilityRoleAttribute]) + return [self role]; + + if ([attributeName isEqualToString: NSAccessibilitySubroleAttribute]) + return [self subrole]; + + if ([attributeName isEqualToString: NSAccessibilityRoleDescriptionAttribute]) + return [self roleDescription]; + + if ([attributeName isEqualToString: NSAccessibilityParentAttribute]) { + if (m_object->isAccessibilityRenderObject()) { + FrameView* fv = static_cast<AccessibilityRenderObject*>(m_object)->frameViewIfRenderView(); + if (fv) + return fv->platformWidget(); + } + + return m_object->parentObjectUnignored()->wrapper(); + } + + if ([attributeName isEqualToString: NSAccessibilityChildrenAttribute]) { + if (m_object->children().isEmpty()) { + NSArray* children = [self renderWidgetChildren]; + if (children != nil) + return children; + } + return convertToNSArray(m_object->children()); + } + + if ([attributeName isEqualToString: NSAccessibilitySelectedChildrenAttribute]) { + if (m_object->isListBox()) { + AccessibilityObject::AccessibilityChildrenVector selectedChildrenCopy; + m_object->selectedChildren(selectedChildrenCopy); + return convertToNSArray(selectedChildrenCopy); + } + return nil; + } + + if ([attributeName isEqualToString: NSAccessibilityVisibleChildrenAttribute]) { + if (m_object->isListBox()) { + AccessibilityObject::AccessibilityChildrenVector visibleChildrenCopy; + m_object->visibleChildren(visibleChildrenCopy); + return convertToNSArray(visibleChildrenCopy); + } + else if (m_object->isList()) + return [self accessibilityAttributeValue:NSAccessibilityChildrenAttribute]; + + return nil; + } + + + if (m_object->isWebArea()) { + if ([attributeName isEqualToString: @"AXLinkUIElements"]) { + AccessibilityObject::AccessibilityChildrenVector links; + static_cast<AccessibilityRenderObject*>(m_object)->getDocumentLinks(links); + return convertToNSArray(links); + } + if ([attributeName isEqualToString: @"AXLoaded"]) + return [NSNumber numberWithBool: m_object->isLoaded()]; + if ([attributeName isEqualToString: @"AXLayoutCount"]) + return [NSNumber numberWithInt: m_object->layoutCount()]; + } + + if (m_object->isTextControl()) { + if ([attributeName isEqualToString: NSAccessibilityNumberOfCharactersAttribute]) { + int length = m_object->textLength(); + if (length < 0) + return nil; + return [NSNumber numberWithUnsignedInt:length]; + } + if ([attributeName isEqualToString: NSAccessibilitySelectedTextAttribute]) { + String selectedText = m_object->selectedText(); + if (selectedText.isNull()) + return nil; + return (NSString*)selectedText; + } + if ([attributeName isEqualToString: NSAccessibilitySelectedTextRangeAttribute]) { + PlainTextRange textRange = m_object->selectedTextRange(); + if (textRange.isNull()) + return nil; + return [NSValue valueWithRange:NSMakeRange(textRange.start, textRange.length)]; + } + // TODO: Get actual visible range. <rdar://problem/4712101> + if ([attributeName isEqualToString: NSAccessibilityVisibleCharacterRangeAttribute]) + return m_object->isPasswordField() ? nil : [NSValue valueWithRange: NSMakeRange(0, m_object->textLength())]; + if ([attributeName isEqualToString: NSAccessibilityInsertionPointLineNumberAttribute]) { + // if selectionEnd > 0, then there is selected text and this question should not be answered + if (m_object->isPasswordField() || m_object->selectionEnd() > 0) + return nil; + int lineNumber = m_object->lineForPosition(m_object->visiblePositionForIndex(m_object->selectionStart(), true)); + if (lineNumber < 0) + return nil; + return [NSNumber numberWithInt:lineNumber]; + } + } + + if ([attributeName isEqualToString: NSAccessibilityURLAttribute]) { + KURL url = m_object->url(); + if (url.isNull()) + return nil; + return (NSURL*)url; + } + + if ([attributeName isEqualToString: @"AXVisited"]) + return [NSNumber numberWithBool: m_object->isVisited()]; + + if ([attributeName isEqualToString: NSAccessibilityTitleAttribute]) { + if (m_object->isAttachment()) { + if ([[[self attachmentView] accessibilityAttributeNames] containsObject:NSAccessibilityTitleAttribute]) + return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityTitleAttribute]; + } + return m_object->title(); + } + + if ([attributeName isEqualToString: NSAccessibilityDescriptionAttribute]) { + if (m_object->isAttachment()) { + if ([[[self attachmentView] accessibilityAttributeNames] containsObject:NSAccessibilityDescriptionAttribute]) + return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityDescriptionAttribute]; + } + return m_object->accessibilityDescription(); + } + + if ([attributeName isEqualToString: NSAccessibilityValueAttribute]) { + if (m_object->isAttachment()) { + if ([[[self attachmentView] accessibilityAttributeNames] containsObject:NSAccessibilityValueAttribute]) + return [[self attachmentView] accessibilityAttributeValue:NSAccessibilityValueAttribute]; + } + if (m_object->isProgressIndicator() || m_object->isSlider()) + return [NSNumber numberWithFloat:m_object->valueForRange()]; + if (m_object->hasIntValue()) + return [NSNumber numberWithInt:m_object->intValue()]; + return m_object->stringValue(); + } + + if ([attributeName isEqualToString: NSAccessibilityMinValueAttribute]) + return [NSNumber numberWithFloat:m_object->minValueForRange()]; + + if ([attributeName isEqualToString: NSAccessibilityMaxValueAttribute]) + return [NSNumber numberWithFloat:m_object->maxValueForRange()]; + + if ([attributeName isEqualToString: NSAccessibilityHelpAttribute]) + return m_object->helpText(); + + if ([attributeName isEqualToString: NSAccessibilityFocusedAttribute]) + return [NSNumber numberWithBool: m_object->isFocused()]; + + if ([attributeName isEqualToString: NSAccessibilityEnabledAttribute]) + return [NSNumber numberWithBool: m_object->isEnabled()]; + + if ([attributeName isEqualToString: NSAccessibilitySizeAttribute]) { + IntSize s = m_object->size(); + return [NSValue valueWithSize: NSMakeSize(s.width(), s.height())]; + } + + if ([attributeName isEqualToString: NSAccessibilityPositionAttribute]) + return [self position]; + + if ([attributeName isEqualToString: NSAccessibilityWindowAttribute] || + [attributeName isEqualToString: NSAccessibilityTopLevelUIElementAttribute]) { + FrameView* fv = m_object->documentFrameView(); + if (fv) + return [fv->platformWidget() window]; + return nil; + } + + if ([attributeName isEqualToString:NSAccessibilityAccessKeyAttribute]) { + AtomicString accessKey = m_object->accessKey(); + if (accessKey.isNull()) + return nil; + return accessKey; + } + + if (m_object->isDataTable()) { + // TODO: distinguish between visible and non-visible rows + if ([attributeName isEqualToString:NSAccessibilityRowsAttribute] || + [attributeName isEqualToString:NSAccessibilityVisibleRowsAttribute]) { + return convertToNSArray(static_cast<AccessibilityTable*>(m_object)->rows()); + } + // TODO: distinguish between visible and non-visible columns + if ([attributeName isEqualToString:NSAccessibilityColumnsAttribute] || + [attributeName isEqualToString:NSAccessibilityVisibleColumnsAttribute]) { + return convertToNSArray(static_cast<AccessibilityTable*>(m_object)->columns()); + } + + // HTML tables don't support these + if ([attributeName isEqualToString:NSAccessibilitySelectedColumnsAttribute] || + [attributeName isEqualToString:NSAccessibilitySelectedRowsAttribute] || + [attributeName isEqualToString:NSAccessibilitySelectedCellsAttribute]) + return nil; + + if ([attributeName isEqualToString:(NSString *)kAXColumnHeaderUIElementsAttribute]) { + AccessibilityObject::AccessibilityChildrenVector columnHeaders; + static_cast<AccessibilityTable*>(m_object)->columnHeaders(columnHeaders); + return convertToNSArray(columnHeaders); + } + + if ([attributeName isEqualToString:NSAccessibilityHeaderAttribute]) { + AccessibilityObject* headerContainer = static_cast<AccessibilityTable*>(m_object)->headerContainer(); + if (headerContainer) + return headerContainer->wrapper(); + return nil; + } + + if ([attributeName isEqualToString:NSAccessibilityRowHeaderUIElementsAttribute]) { + AccessibilityObject::AccessibilityChildrenVector rowHeaders; + static_cast<AccessibilityTable*>(m_object)->rowHeaders(rowHeaders); + return convertToNSArray(rowHeaders); + } + + if ([attributeName isEqualToString:NSAccessibilityVisibleCellsAttribute]) { + AccessibilityObject::AccessibilityChildrenVector cells; + static_cast<AccessibilityTable*>(m_object)->cells(cells); + return convertToNSArray(cells); + } + } + + if (m_object->isTableRow()) { + if ([attributeName isEqualToString:NSAccessibilityIndexAttribute]) + return [NSNumber numberWithInt:static_cast<AccessibilityTableRow*>(m_object)->rowIndex()]; + } + + if (m_object->isTableColumn()) { + if ([attributeName isEqualToString:NSAccessibilityIndexAttribute]) + return [NSNumber numberWithInt:static_cast<AccessibilityTableColumn*>(m_object)->columnIndex()]; + + // rows attribute for a column is the list of all the elements in that column at each row + if ([attributeName isEqualToString:NSAccessibilityRowsAttribute] || + [attributeName isEqualToString:NSAccessibilityVisibleRowsAttribute]) { + return convertToNSArray(static_cast<AccessibilityTableColumn*>(m_object)->children()); + } + if ([attributeName isEqualToString:NSAccessibilityHeaderAttribute]) { + AccessibilityObject* header = static_cast<AccessibilityTableColumn*>(m_object)->headerObject(); + if (!header) + return nil; + return header->wrapper(); + } + } + + if (m_object->isTableCell()) { + if ([attributeName isEqualToString:NSAccessibilityRowIndexRangeAttribute]) { + pair<int, int> rowRange; + static_cast<AccessibilityTableCell*>(m_object)->rowIndexRange(rowRange); + return [NSValue valueWithRange:NSMakeRange(rowRange.first, rowRange.second)]; + } + if ([attributeName isEqualToString:NSAccessibilityColumnIndexRangeAttribute]) { + pair<int, int> columnRange; + static_cast<AccessibilityTableCell*>(m_object)->columnIndexRange(columnRange); + return [NSValue valueWithRange:NSMakeRange(columnRange.first, columnRange.second)]; + } + } + + if ((m_object->isListBox() ||m_object->isList()) && [attributeName isEqualToString:NSAccessibilityOrientationAttribute]) + return NSAccessibilityVerticalOrientationValue; + + if ([attributeName isEqualToString: @"AXSelectedTextMarkerRange"]) + return [self textMarkerRangeForSelection]; + + if (m_object->isAccessibilityRenderObject()) { + RenderObject* renderer = static_cast<AccessibilityRenderObject*>(m_object)->renderer(); + if (!renderer) + return nil; + + if ([attributeName isEqualToString: @"AXStartTextMarker"]) + return textMarkerForVisiblePosition(startOfDocument(renderer->document())); + if ([attributeName isEqualToString: @"AXEndTextMarker"]) + return textMarkerForVisiblePosition(endOfDocument(renderer->document())); + + if ([attributeName isEqualToString:NSAccessibilityBlockQuoteLevelAttribute]) + return [NSNumber numberWithInt:blockquoteLevel(renderer)]; + } else { + if ([attributeName isEqualToString:NSAccessibilityBlockQuoteLevelAttribute]) { + AccessibilityObject* parent = m_object->parentObjectUnignored(); + if (!parent) + return [NSNumber numberWithInt:0]; + return [parent->wrapper() accessibilityAttributeValue:NSAccessibilityBlockQuoteLevelAttribute]; + } + } + + if ([attributeName isEqualToString: NSAccessibilityLinkedUIElementsAttribute]) { + AccessibilityObject::AccessibilityChildrenVector linkedUIElements; + m_object->linkedUIElements(linkedUIElements); + if (linkedUIElements.size() == 0) + return nil; + return convertToNSArray(linkedUIElements); + } + + if ([attributeName isEqualToString: NSAccessibilitySelectedAttribute]) + return [NSNumber numberWithBool:m_object->isSelected()]; + + if ([attributeName isEqualToString: NSAccessibilityServesAsTitleForUIElementsAttribute] && m_object->isMenuButton()) { + AccessibilityObject* uiElement = static_cast<AccessibilityRenderObject*>(m_object)->menuForMenuButton(); + if (uiElement) + return [NSArray arrayWithObject:uiElement->wrapper()]; + } + + if ([attributeName isEqualToString:NSAccessibilityTitleUIElementAttribute]) { + AccessibilityObject* obj = m_object->titleUIElement(); + if (obj) + return obj->wrapper(); + return nil; + } + + return nil; +} + +- (id)accessibilityFocusedUIElement +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + RefPtr<AccessibilityObject> focusedObj = m_object->focusedUIElement(); + + if (!focusedObj) + return nil; + + return focusedObj->wrapper(); +} + +- (id)accessibilityHitTest:(NSPoint)point +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + RefPtr<AccessibilityObject> axObject = m_object->doAccessibilityHitTest(IntPoint(point)); + if (axObject) + return NSAccessibilityUnignoredAncestor(axObject->wrapper()); + return NSAccessibilityUnignoredAncestor(self); +} + +- (BOOL)accessibilityIsAttributeSettable:(NSString*)attributeName +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if ([attributeName isEqualToString: @"AXSelectedTextMarkerRange"]) + return YES; + + if ([attributeName isEqualToString: NSAccessibilityFocusedAttribute]) + return m_object->canSetFocusAttribute(); + + if ([attributeName isEqualToString: NSAccessibilityValueAttribute]) + return m_object->canSetValueAttribute(); + + if ([attributeName isEqualToString: NSAccessibilitySelectedAttribute]) + return m_object->canSetSelectedAttribute(); + + if ([attributeName isEqualToString: NSAccessibilitySelectedChildrenAttribute]) + return m_object->canSetSelectedChildrenAttribute(); + + if ([attributeName isEqualToString: NSAccessibilitySelectedTextAttribute] || + [attributeName isEqualToString: NSAccessibilitySelectedTextRangeAttribute] || + [attributeName isEqualToString: NSAccessibilityVisibleCharacterRangeAttribute]) + return m_object->canSetTextRangeAttributes(); + + return NO; +} + +// accessibilityShouldUseUniqueId is an AppKit method we override so that +// objects will be given a unique ID, and therefore allow AppKit to know when they +// become obsolete (e.g. when the user navigates to a new web page, making this one +// unrendered but not deallocated because it is in the back/forward cache). +// It is important to call NSAccessibilityUnregisterUniqueIdForUIElement in the +// appropriate place (e.g. dealloc) to remove these non-retained references from +// AppKit's id mapping tables. We do this in detach by calling unregisterUniqueIdForUIElement. +// +// Registering an object is also required for observing notifications. Only registered objects can be observed. +- (BOOL)accessibilityIsIgnored +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if (m_object->isAttachment()) + return [[self attachmentView] accessibilityIsIgnored]; + return m_object->accessibilityIsIgnored(); +} + +- (NSArray* )accessibilityParameterizedAttributeNames +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if (m_object->isAttachment()) + return nil; + + static NSArray* paramAttrs = nil; + static NSArray* textParamAttrs = nil; + static NSArray* tableParamAttrs = nil; + if (paramAttrs == nil) { + paramAttrs = [[NSArray alloc] initWithObjects: + @"AXUIElementForTextMarker", + @"AXTextMarkerRangeForUIElement", + @"AXLineForTextMarker", + @"AXTextMarkerRangeForLine", + @"AXStringForTextMarkerRange", + @"AXTextMarkerForPosition", + @"AXBoundsForTextMarkerRange", + @"AXAttributedStringForTextMarkerRange", + @"AXTextMarkerRangeForUnorderedTextMarkers", + @"AXNextTextMarkerForTextMarker", + @"AXPreviousTextMarkerForTextMarker", + @"AXLeftWordTextMarkerRangeForTextMarker", + @"AXRightWordTextMarkerRangeForTextMarker", + @"AXLeftLineTextMarkerRangeForTextMarker", + @"AXRightLineTextMarkerRangeForTextMarker", + @"AXSentenceTextMarkerRangeForTextMarker", + @"AXParagraphTextMarkerRangeForTextMarker", + @"AXNextWordEndTextMarkerForTextMarker", + @"AXPreviousWordStartTextMarkerForTextMarker", + @"AXNextLineEndTextMarkerForTextMarker", + @"AXPreviousLineStartTextMarkerForTextMarker", + @"AXNextSentenceEndTextMarkerForTextMarker", + @"AXPreviousSentenceStartTextMarkerForTextMarker", + @"AXNextParagraphEndTextMarkerForTextMarker", + @"AXPreviousParagraphStartTextMarkerForTextMarker", + @"AXStyleTextMarkerRangeForTextMarker", + @"AXLengthForTextMarkerRange", + NSAccessibilityBoundsForRangeParameterizedAttribute, + nil]; + } + + if (textParamAttrs == nil) { + NSMutableArray* tempArray = [[NSMutableArray alloc] initWithArray:paramAttrs]; + [tempArray addObject:(NSString*)kAXLineForIndexParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXRangeForLineParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXStringForRangeParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXRangeForPositionParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXRangeForIndexParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXBoundsForRangeParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXRTFForRangeParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXAttributedStringForRangeParameterizedAttribute]; + [tempArray addObject:(NSString*)kAXStyleRangeForIndexParameterizedAttribute]; + textParamAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + if (tableParamAttrs == nil) { + NSMutableArray* tempArray = [[NSMutableArray alloc] initWithArray:paramAttrs]; + [tempArray addObject:NSAccessibilityCellForColumnAndRowParameterizedAttribute]; + tableParamAttrs = [[NSArray alloc] initWithArray:tempArray]; + [tempArray release]; + } + + if (m_object->isPasswordField()) + return [NSArray array]; + + if (!m_object->isAccessibilityRenderObject()) + return paramAttrs; + + if (m_object->isTextControl()) + return textParamAttrs; + + if (m_object->isDataTable()) + return tableParamAttrs; + + if (m_object->isMenuRelated()) + return nil; + + return paramAttrs; +} + +- (void)accessibilityPerformPressAction +{ + if (!m_object) + return; + + m_object->updateBackingStore(); + + if (m_object->isAttachment()) + [[self attachmentView] accessibilityPerformAction:NSAccessibilityPressAction]; + + m_object->press(); +} + +- (void)accessibilityPerformShowMenuAction +{ + // This needs to be performed in an iteration of the run loop that did not start from an AX call. + // If it's the same run loop iteration, the menu open notification won't be sent + [self performSelector:@selector(accessibilityShowContextMenu) withObject:nil afterDelay:0.0]; +} + +- (void)accessibilityShowContextMenu +{ + FrameView* frameView = m_object->documentFrameView(); + if (!frameView) + return; + + // simulate a click in the middle of the object + IntPoint clickPoint = m_object->clickPoint(); + NSPoint nsClickPoint = NSMakePoint(clickPoint.x(), clickPoint.y()); + + NSView* view = nil; + if (m_object->isAttachment()) + view = [self attachmentView]; + else + view = frameView->documentView(); + + if (!view) + return; + + NSPoint nsScreenPoint = [view convertPoint:nsClickPoint toView:nil]; + + // Show the contextual menu for this event. + NSEvent* event = [NSEvent mouseEventWithType:NSRightMouseDown location:nsScreenPoint modifierFlags:0 timestamp:0 windowNumber:[[view window] windowNumber] context:0 eventNumber:0 clickCount:1 pressure:1]; + NSMenu* menu = [view menuForEvent:event]; + + if (menu) + [NSMenu popUpContextMenu:menu withEvent:event forView:view]; +} + +- (void)accessibilityPerformAction:(NSString*)action +{ + if (!m_object) + return; + + m_object->updateBackingStore(); + + if ([action isEqualToString:NSAccessibilityPressAction]) + [self accessibilityPerformPressAction]; + + else if ([action isEqualToString:NSAccessibilityShowMenuAction]) + [self accessibilityPerformShowMenuAction]; +} + +- (void)accessibilitySetValue:(id)value forAttribute:(NSString*)attributeName +{ + if (!m_object) + return; + + m_object->updateBackingStore(); + + WebCoreTextMarkerRange* textMarkerRange = nil; + NSNumber* number = nil; + NSString* string = nil; + NSRange range = {0, 0}; + NSArray* array = nil; + + // decode the parameter + if ([[WebCoreViewFactory sharedFactory] objectIsTextMarkerRange:value]) + textMarkerRange = (WebCoreTextMarkerRange*) value; + + else if ([value isKindOfClass:[NSNumber self]]) + number = value; + + else if ([value isKindOfClass:[NSString self]]) + string = value; + + else if ([value isKindOfClass:[NSValue self]]) + range = [value rangeValue]; + + else if ([value isKindOfClass:[NSArray self]]) + array = value; + + // handle the command + if ([attributeName isEqualToString: @"AXSelectedTextMarkerRange"]) { + ASSERT(textMarkerRange); + m_object->setSelectedVisiblePositionRange([self visiblePositionRangeForTextMarkerRange:textMarkerRange]); + } else if ([attributeName isEqualToString: NSAccessibilityFocusedAttribute]) { + ASSERT(number); + m_object->setFocused([number intValue] != 0); + } else if ([attributeName isEqualToString: NSAccessibilityValueAttribute]) { + if (!string) + return; + m_object->setValue(string); + } else if ([attributeName isEqualToString: NSAccessibilitySelectedAttribute]) { + if (!number) + return; + m_object->setSelected([number boolValue]); + } else if ([attributeName isEqualToString: NSAccessibilitySelectedChildrenAttribute]) { + if (!array || m_object->roleValue() != ListBoxRole) + return; + AccessibilityObject::AccessibilityChildrenVector selectedChildren; + convertToVector(array, selectedChildren); + static_cast<AccessibilityListBox*>(m_object)->setSelectedChildren(selectedChildren); + } else if (m_object->isTextControl()) { + if ([attributeName isEqualToString: NSAccessibilitySelectedTextAttribute]) { + m_object->setSelectedText(string); + } else if ([attributeName isEqualToString: NSAccessibilitySelectedTextRangeAttribute]) { + m_object->setSelectedTextRange(PlainTextRange(range.location, range.length)); + } else if ([attributeName isEqualToString: NSAccessibilityVisibleCharacterRangeAttribute]) { + m_object->makeRangeVisible(PlainTextRange(range.location, range.length)); + } + } +} + +static RenderObject* rendererForView(NSView* view) +{ + if (![view conformsToProtocol:@protocol(WebCoreFrameView)]) + return 0; + + NSView<WebCoreFrameView>* frameView = (NSView<WebCoreFrameView>*)view; + Frame* frame = [frameView _web_frame]; + if (!frame) + return 0; + + Node* node = frame->document()->ownerElement(); + if (!node) + return 0; + + return node->renderer(); +} + +- (id)_accessibilityParentForSubview:(NSView*)subview +{ + RenderObject* renderer = rendererForView(subview); + if (!renderer) + return nil; + + AccessibilityObject* obj = renderer->document()->axObjectCache()->getOrCreate(renderer); + if (obj) + return obj->parentObjectUnignored()->wrapper(); + return nil; +} + +- (NSString*)accessibilityActionDescription:(NSString*)action +{ + // we have no custom actions + return NSAccessibilityActionDescription(action); +} + +// The CFAttributedStringType representation of the text associated with this accessibility +// object that is specified by the given range. +- (NSAttributedString*)doAXAttributedStringForRange:(NSRange)range +{ + PlainTextRange textRange = PlainTextRange(range.location, range.length); + VisiblePositionRange visiblePosRange = m_object->visiblePositionRangeForRange(textRange); + return [self doAXAttributedStringForTextMarkerRange:textMarkerRangeFromVisiblePositions(visiblePosRange.start, visiblePosRange.end)]; +} + +// The RTF representation of the text associated with this accessibility object that is +// specified by the given range. +- (NSData*)doAXRTFForRange:(NSRange)range +{ + NSAttributedString* attrString = [self doAXAttributedStringForRange:range]; + return [attrString RTFFromRange: NSMakeRange(0, [attrString length]) documentAttributes: nil]; +} + +- (id)accessibilityAttributeValue:(NSString*)attribute forParameter:(id)parameter +{ + WebCoreTextMarker* textMarker = nil; + WebCoreTextMarkerRange* textMarkerRange = nil; + NSNumber* number = nil; + NSArray* array = nil; + RefPtr<AccessibilityObject> uiElement = 0; + NSPoint point = NSZeroPoint; + bool pointSet = false; + NSRange range = {0, 0}; + bool rangeSet = false; + + // basic parameter validation + if (!m_object || !attribute || !parameter) + return nil; + + m_object->updateBackingStore(); + + // common parameter type check/casting. Nil checks in handlers catch wrong type case. + // NOTE: This assumes nil is not a valid parameter, because it is indistinguishable from + // a parameter of the wrong type. + if ([[WebCoreViewFactory sharedFactory] objectIsTextMarker:parameter]) + textMarker = (WebCoreTextMarker*) parameter; + + else if ([[WebCoreViewFactory sharedFactory] objectIsTextMarkerRange:parameter]) + textMarkerRange = (WebCoreTextMarkerRange*) parameter; + + else if ([parameter isKindOfClass:[AccessibilityObjectWrapper self]]) + uiElement = [(AccessibilityObjectWrapper*)parameter accessibilityObject]; + + else if ([parameter isKindOfClass:[NSNumber self]]) + number = parameter; + + else if ([parameter isKindOfClass:[NSArray self]]) + array = parameter; + + else if ([parameter isKindOfClass:[NSValue self]] && strcmp([(NSValue*)parameter objCType], @encode(NSPoint)) == 0) { + pointSet = true; + point = [(NSValue*)parameter pointValue]; + + } else if ([parameter isKindOfClass:[NSValue self]] && strcmp([(NSValue*)parameter objCType], @encode(NSRange)) == 0) { + rangeSet = true; + range = [(NSValue*)parameter rangeValue]; + + } else { + // got a parameter of a type we never use + // NOTE: No ASSERT_NOT_REACHED because this can happen accidentally + // while using accesstool (e.g.), forcing you to start over + return nil; + } + + // Convert values to WebCore types + // FIXME: prepping all of these values as WebCore types is unnecessary in many + // cases. Re-organization of this function or performing the conversion on a + // need basis are possible improvements. + VisiblePosition visiblePos; + if (textMarker) + visiblePos = visiblePositionForTextMarker(textMarker); + int intNumber = [number intValue]; + VisiblePositionRange visiblePosRange; + if (textMarkerRange) + visiblePosRange = [self visiblePositionRangeForTextMarkerRange:textMarkerRange]; + IntPoint webCorePoint = IntPoint(point); + PlainTextRange plainTextRange = PlainTextRange(range.location, range.length); + + // dispatch + if ([attribute isEqualToString: @"AXUIElementForTextMarker"]) + return m_object->accessibilityObjectForPosition(visiblePos)->wrapper(); + + if ([attribute isEqualToString: @"AXTextMarkerRangeForUIElement"]) { + VisiblePositionRange vpRange = uiElement.get()->visiblePositionRange(); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXLineForTextMarker"]) + return [NSNumber numberWithUnsignedInt:m_object->lineForPosition(visiblePos)]; + + if ([attribute isEqualToString: @"AXTextMarkerRangeForLine"]) { + VisiblePositionRange vpRange = m_object->visiblePositionRangeForLine(intNumber); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXStringForTextMarkerRange"]) + return m_object->stringForVisiblePositionRange(visiblePosRange); + + if ([attribute isEqualToString: @"AXTextMarkerForPosition"]) + return pointSet ? textMarkerForVisiblePosition(m_object->visiblePositionForPoint(webCorePoint)) : nil; + + if ([attribute isEqualToString: @"AXBoundsForTextMarkerRange"]) { + NSRect rect = m_object->boundsForVisiblePositionRange(visiblePosRange); + return [NSValue valueWithRect:rect]; + } + + if ([attribute isEqualToString:NSAccessibilityBoundsForRangeParameterizedAttribute]) { + VisiblePosition start = m_object->visiblePositionForIndex(range.location); + VisiblePosition end = m_object->visiblePositionForIndex(range.location+range.length); + if (start.isNull() || end.isNull()) + return nil; + NSRect rect = m_object->boundsForVisiblePositionRange(VisiblePositionRange(start, end)); + return [NSValue valueWithRect:rect]; + } + + if ([attribute isEqualToString: @"AXAttributedStringForTextMarkerRange"]) + return [self doAXAttributedStringForTextMarkerRange:textMarkerRange]; + + if ([attribute isEqualToString: @"AXTextMarkerRangeForUnorderedTextMarkers"]) { + if ([array count] < 2) + return nil; + + WebCoreTextMarker* textMarker1 = (WebCoreTextMarker*) [array objectAtIndex:0]; + WebCoreTextMarker* textMarker2 = (WebCoreTextMarker*) [array objectAtIndex:1]; + if (![[WebCoreViewFactory sharedFactory] objectIsTextMarker:textMarker1] + || ![[WebCoreViewFactory sharedFactory] objectIsTextMarker:textMarker2]) + return nil; + + VisiblePosition visiblePos1 = visiblePositionForTextMarker(textMarker1); + VisiblePosition visiblePos2 = visiblePositionForTextMarker(textMarker2); + VisiblePositionRange vpRange = m_object->visiblePositionRangeForUnorderedPositions(visiblePos1, visiblePos2); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXNextTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->nextVisiblePosition(visiblePos)); + + if ([attribute isEqualToString: @"AXPreviousTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->previousVisiblePosition(visiblePos)); + + if ([attribute isEqualToString: @"AXLeftWordTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->positionOfLeftWord(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXRightWordTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->positionOfRightWord(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXLeftLineTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->leftLineVisiblePositionRange(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXRightLineTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->rightLineVisiblePositionRange(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXSentenceTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->sentenceForPosition(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXParagraphTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->paragraphForPosition(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXNextWordEndTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->nextWordEnd(visiblePos)); + + if ([attribute isEqualToString: @"AXPreviousWordStartTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->previousWordStart(visiblePos)); + + if ([attribute isEqualToString: @"AXNextLineEndTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->nextLineEndPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXPreviousLineStartTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->previousLineStartPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXNextSentenceEndTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->nextSentenceEndPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXPreviousSentenceStartTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->previousSentenceStartPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXNextParagraphEndTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->nextParagraphEndPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXPreviousParagraphStartTextMarkerForTextMarker"]) + return textMarkerForVisiblePosition(m_object->previousParagraphStartPosition(visiblePos)); + + if ([attribute isEqualToString: @"AXStyleTextMarkerRangeForTextMarker"]) { + VisiblePositionRange vpRange = m_object->styleRangeForPosition(visiblePos); + return (id)textMarkerRangeFromVisiblePositions(vpRange.start, vpRange.end); + } + + if ([attribute isEqualToString: @"AXLengthForTextMarkerRange"]) { + int length = m_object->lengthForVisiblePositionRange(visiblePosRange); + if (length < 0) + return nil; + return [NSNumber numberWithInt:length]; + } + + if (m_object->isDataTable()) { + if ([attribute isEqualToString:NSAccessibilityCellForColumnAndRowParameterizedAttribute]) { + if (array == nil || [array count] != 2) + return nil; + AccessibilityTableCell* cell = static_cast<AccessibilityTable*>(m_object)->cellForColumnAndRow([[array objectAtIndex:0] unsignedIntValue], [[array objectAtIndex:1] unsignedIntValue]); + if (!cell) + return nil; + + return cell->wrapper(); + } + } + + if (m_object->isTextControl()) { + if ([attribute isEqualToString: (NSString *)kAXLineForIndexParameterizedAttribute]) { + int lineNumber = m_object->doAXLineForIndex(intNumber); + if (lineNumber < 0) + return nil; + return [NSNumber numberWithUnsignedInt:lineNumber]; + } + + if ([attribute isEqualToString: (NSString *)kAXRangeForLineParameterizedAttribute]) { + PlainTextRange textRange = m_object->doAXRangeForLine(intNumber); + return [NSValue valueWithRange: NSMakeRange(textRange.start, textRange.length)]; + } + + if ([attribute isEqualToString: (NSString*)kAXStringForRangeParameterizedAttribute]) + return rangeSet ? (id)(m_object->doAXStringForRange(plainTextRange)) : nil; + + if ([attribute isEqualToString: (NSString*)kAXRangeForPositionParameterizedAttribute]) { + if (!pointSet) + return nil; + PlainTextRange textRange = m_object->doAXRangeForPosition(webCorePoint); + return [NSValue valueWithRange: NSMakeRange(textRange.start, textRange.length)]; + } + + if ([attribute isEqualToString: (NSString*)kAXRangeForIndexParameterizedAttribute]) { + PlainTextRange textRange = m_object->doAXRangeForIndex(intNumber); + return [NSValue valueWithRange: NSMakeRange(textRange.start, textRange.length)]; + } + + if ([attribute isEqualToString: (NSString*)kAXBoundsForRangeParameterizedAttribute]) { + if (!rangeSet) + return nil; + NSRect rect = m_object->doAXBoundsForRange(plainTextRange); + return [NSValue valueWithRect:rect]; + } + + if ([attribute isEqualToString: (NSString*)kAXRTFForRangeParameterizedAttribute]) + return rangeSet ? [self doAXRTFForRange:range] : nil; + + if ([attribute isEqualToString: (NSString*)kAXAttributedStringForRangeParameterizedAttribute]) + return rangeSet ? [self doAXAttributedStringForRange:range] : nil; + + if ([attribute isEqualToString: (NSString*)kAXStyleRangeForIndexParameterizedAttribute]) { + PlainTextRange textRange = m_object->doAXStyleRangeForIndex(intNumber); + return [NSValue valueWithRange: NSMakeRange(textRange.start, textRange.length)]; + } + } + + return nil; +} + +- (BOOL)accessibilityShouldUseUniqueId +{ + return m_object->accessibilityShouldUseUniqueId(); +} + +// API that AppKit uses for faster access +- (NSUInteger)accessibilityIndexOfChild:(id)child +{ + if (!m_object) + return NSNotFound; + + m_object->updateBackingStore(); + + const AccessibilityObject::AccessibilityChildrenVector& children = m_object->children(); + + if (children.isEmpty()) + return [[self renderWidgetChildren] indexOfObject:child]; + + unsigned count = children.size(); + for (unsigned k = 0; k < count; ++k) { + AccessibilityObjectWrapper* wrapper = children[k]->wrapper(); + if (wrapper == child || (children[k]->isAttachment() && [wrapper attachmentView] == child)) + return k; + } + + return NSNotFound; +} + +- (NSUInteger)accessibilityArrayAttributeCount:(NSString *)attribute +{ + if (!m_object) + return 0; + + m_object->updateBackingStore(); + + if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) { + const AccessibilityObject::AccessibilityChildrenVector& children = m_object->children(); + if (children.isEmpty()) + return [[self renderWidgetChildren] count]; + + return children.size(); + } + + return [super accessibilityArrayAttributeCount:attribute]; +} + +- (NSArray *)accessibilityArrayAttributeValues:(NSString *)attribute index:(NSUInteger)index maxCount:(NSUInteger)maxCount +{ + if (!m_object) + return nil; + + m_object->updateBackingStore(); + + if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) { + if (m_object->children().isEmpty()) { + NSArray *children = [self renderWidgetChildren]; + if (!children) + return nil; + + NSUInteger childCount = [children count]; + if (index >= childCount) + return nil; + + NSUInteger arrayLength = min(childCount - index, maxCount); + return [children subarrayWithRange:NSMakeRange(index, arrayLength)]; + } + + const AccessibilityObject::AccessibilityChildrenVector& children = m_object->children(); + unsigned childCount = children.size(); + if (index >= childCount) + return nil; + + unsigned available = min(childCount - index, maxCount); + + NSMutableArray *subarray = [NSMutableArray arrayWithCapacity:available]; + for (unsigned added = 0; added < available; ++index, ++added) { + AccessibilityObjectWrapper* wrapper = children[index]->wrapper(); + if (wrapper) { + // The attachment view should be returned, otherwise AX palindrome errors occur. + if (children[index]->isAttachment() && [wrapper attachmentView]) + [subarray addObject:[wrapper attachmentView]]; + else + [subarray addObject:wrapper]; + } + } + + return subarray; + } + + return [super accessibilityArrayAttributeValues:attribute index:index maxCount:maxCount]; +} + +@end + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/qt/AccessibilityObjectQt.cpp b/WebCore/accessibility/qt/AccessibilityObjectQt.cpp new file mode 100644 index 0000000..1710027 --- /dev/null +++ b/WebCore/accessibility/qt/AccessibilityObjectQt.cpp @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2008 Apple Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +#if HAVE(ACCESSIBILITY) + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return false; +} + +} // namespace WebCore + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/win/AXObjectCacheWin.cpp b/WebCore/accessibility/win/AXObjectCacheWin.cpp new file mode 100644 index 0000000..e39d5a5 --- /dev/null +++ b/WebCore/accessibility/win/AXObjectCacheWin.cpp @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + + +#include "config.h" +#include "AXObjectCache.h" + +#include "AccessibilityObject.h" + +namespace WebCore { + +void AXObjectCache::detachWrapper(AccessibilityObject* obj) +{ + // On Windows, AccessibilityObjects are created when get_accChildCount is + // called, but they are not wrapped until get_accChild is called, so this + // object may not have a wrapper. + if (AccessibilityObjectWrapper* wrapper = obj->wrapper()) + wrapper->detach(); +} + +void AXObjectCache::attachWrapper(AccessibilityObject*) +{ + // On Windows, AccessibilityObjects are wrapped when the accessibility + // software requests them via get_accChild. +} + +void AXObjectCache::postPlatformNotification(AccessibilityObject*, const String&) +{ +} + +void AXObjectCache::handleFocusedUIElementChanged() +{ +} + +} // namespace WebCore diff --git a/WebCore/accessibility/win/AccessibilityObjectWin.cpp b/WebCore/accessibility/win/AccessibilityObjectWin.cpp new file mode 100644 index 0000000..0a386c7 --- /dev/null +++ b/WebCore/accessibility/win/AccessibilityObjectWin.cpp @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +#if HAVE(ACCESSIBILITY) + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return false; +} + +} // namespace WebCore + +#endif // HAVE(ACCESSIBILITY) diff --git a/WebCore/accessibility/win/AccessibilityObjectWrapperWin.h b/WebCore/accessibility/win/AccessibilityObjectWrapperWin.h new file mode 100644 index 0000000..779443c --- /dev/null +++ b/WebCore/accessibility/win/AccessibilityObjectWrapperWin.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2008 Apple Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + + +#ifndef AccessibilityObjectWrapperWin_h +#define AccessibilityObjectWrapperWin_h + +namespace WebCore { + + class AccessibilityObject; + + class AccessibilityObjectWrapper : public IUnknown { + public: + // IUnknown + virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject) = 0; + virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0; + virtual ULONG STDMETHODCALLTYPE Release(void) = 0; + + virtual void detach() = 0; + bool attached() const { return m_object; } + AccessibilityObject* accessibilityObject() const { return m_object; } + + protected: + AccessibilityObjectWrapper(AccessibilityObject* obj) : m_object(obj) { } + AccessibilityObjectWrapper() : m_object(0) { } + + AccessibilityObject* m_object; + }; + +} // namespace WebCore + +#endif // AccessibilityObjectWrapperWin_h diff --git a/WebCore/accessibility/wx/AccessibilityObjectWx.cpp b/WebCore/accessibility/wx/AccessibilityObjectWx.cpp new file mode 100644 index 0000000..1710027 --- /dev/null +++ b/WebCore/accessibility/wx/AccessibilityObjectWx.cpp @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2008 Apple Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include "config.h" +#include "AccessibilityObject.h" + +#if HAVE(ACCESSIBILITY) + +namespace WebCore { + +bool AccessibilityObject::accessibilityIgnoreAttachment() const +{ + return false; +} + +} // namespace WebCore + +#endif // HAVE(ACCESSIBILITY) |