1 files changed, 179 insertions, 0 deletions
diff --git a/WebCore/page/AccessibilityListBox.cpp b/WebCore/page/AccessibilityListBox.cpp
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+++ b/WebCore/page/AccessibilityListBox.cpp
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+/*
+ * 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<HTMLElement*>& listItems = static_cast<HTMLSelectElement*>(selectNode)->listItems();
+    unsigned length = listItems.size();
+    for (unsigned i = 0; i < length; i++) {
+        AccessibilityObject* listOption = listBoxOptionAccessibilityObject(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()->get(ListBoxOptionRole);
+    static_cast<AccessibilityListBoxOption*>(listBoxObject)->setHTMLElement(element);
+    
+    return listBoxObject;
+}
+
+AccessibilityObject* AccessibilityListBox::doAccessibilityHitTest(const IntPoint& point)
+{
+    // the internal HTMLSelectElement methods for returning a listbox option at a point
+    // ignore optgroup elements.
+    if (!m_renderer)
+        return 0;
+    
+    Node *element = m_renderer->element();
+    if (!element)
+        return 0;
+
+    if (!hasChildren())
+        addChildren();
+    
+    IntRect parentRect = boundingBoxRect();
+    
+    unsigned length = m_children.size();
+    for (unsigned i = 0; i < length; i++) {
+        IntRect rect = static_cast<RenderListBox*>(m_renderer)->itemBoundingBoxRect(parentRect.x(), parentRect.y(), i);
+        if (rect.contains(point))
+            return m_children[i].get();
+    }
+    
+    return this;
+}
+
+} // namespace WebCore