external/webkit r30707

1 files changed, 306 insertions, 0 deletions

diff --git a/WebCore/rendering/HitTestResult.cpp b/WebCore/rendering/HitTestResult.cpp
new file mode 100644
index 0000000..6946489
--- /dev/null
+++ b/WebCore/rendering/HitTestResult.cpp
@@ -0,0 +1,306 @@
+/*
+ * Copyright (C) 2006, 2008 Apple Inc. 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 "HitTestResult.h"
+
+#include "Frame.h"
+#include "FrameTree.h"
+#include "HTMLAnchorElement.h"
+#include "HTMLImageElement.h"
+#include "HTMLInputElement.h"
+#include "HTMLNames.h"
+#include "PlatformScrollBar.h"
+#include "RenderImage.h"
+#include "SelectionController.h"
+
+#if ENABLE(SVG)
+#include "SVGNames.h"
+#include "XLinkNames.h"
+#endif
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+HitTestResult::HitTestResult(const IntPoint& point)
+    : m_point(point)
+{
+}
+
+HitTestResult::HitTestResult(const HitTestResult& other)
+    : m_innerNode(other.innerNode())
+    , m_innerNonSharedNode(other.innerNonSharedNode())
+    , m_point(other.point())
+    , m_localPoint(other.localPoint())
+    , m_innerURLElement(other.URLElement())
+    , m_scrollbar(other.scrollbar())
+{
+}
+
+HitTestResult::~HitTestResult()
+{
+}
+
+HitTestResult& HitTestResult::operator=(const HitTestResult& other)
+{
+    m_innerNode = other.innerNode();
+    m_innerNonSharedNode = other.innerNonSharedNode();
+    m_point = other.point();
+    m_localPoint = other.localPoint();
+    m_innerURLElement = other.URLElement();
+    m_scrollbar = other.scrollbar();
+    return *this;
+}
+
+void HitTestResult::setToNonShadowAncestor()
+{
+    Node* node = innerNode();
+    if (node)
+        node = node->shadowAncestorNode();
+    setInnerNode(node);
+    node = innerNonSharedNode();
+    if (node)
+        node = node->shadowAncestorNode();
+    setInnerNonSharedNode(node);
+}
+
+void HitTestResult::setInnerNode(Node* n)
+{
+    m_innerNode = n;
+}
+    
+void HitTestResult::setInnerNonSharedNode(Node* n)
+{
+    m_innerNonSharedNode = n;
+}
+
+void HitTestResult::setURLElement(Element* n) 
+{ 
+    m_innerURLElement = n; 
+}
+
+void HitTestResult::setScrollbar(PlatformScrollbar* s)
+{
+    m_scrollbar = s;
+}
+
+Frame* HitTestResult::targetFrame() const
+{
+    if (!m_innerURLElement)
+        return 0;
+
+    Frame* frame = m_innerURLElement->document()->frame();
+    if (!frame)
+        return 0;
+
+    return frame->tree()->find(m_innerURLElement->target());
+}
+
+IntRect HitTestResult::boundingBox() const
+{
+    if (m_innerNonSharedNode) {
+        RenderObject* renderer = m_innerNonSharedNode->renderer();
+        if (renderer)
+            return renderer->absoluteBoundingBoxRect();
+    }
+    
+    return IntRect();
+}
+
+bool HitTestResult::isSelected() const
+{
+    if (!m_innerNonSharedNode)
+        return false;
+
+    Frame* frame = m_innerNonSharedNode->document()->frame();
+    if (!frame)
+        return false;
+
+    return frame->selectionController()->contains(m_point);
+}
+
+String HitTestResult::spellingToolTip() const
+{
+    // Return the tool tip string associated with this point, if any. Only markers associated with bad grammar
+    // currently supply strings, but maybe someday markers associated with misspelled words will also.
+    if (!m_innerNonSharedNode)
+        return String();
+    
+     DocumentMarker* marker = m_innerNonSharedNode->document()->markerContainingPoint(m_point, DocumentMarker::Grammar);
+    if (!marker)
+        return String();
+
+    return marker->description;
+}
+
+String HitTestResult::title() const
+{
+    // Find the title in the nearest enclosing DOM node.
+    // For <area> tags in image maps, walk the tree for the <area>, not the <img> using it.
+    for (Node* titleNode = m_innerNode.get(); titleNode; titleNode = titleNode->parentNode()) {
+        if (titleNode->isElementNode()) {
+            String title = static_cast<Element*>(titleNode)->title();
+            if (!title.isEmpty())
+                return title;
+        }
+    }
+    return String();
+}
+
+String displayString(const String& string, const Node* node)
+{
+    if (!node)
+        return string;
+    String copy(string);
+    copy.replace('\\', node->document()->backslashAsCurrencySymbol());
+    return copy;
+}
+
+String HitTestResult::altDisplayString() const
+{
+    if (!m_innerNonSharedNode)
+        return String();
+    
+    if (m_innerNonSharedNode->hasTagName(imgTag)) {
+        HTMLImageElement* image = static_cast<HTMLImageElement*>(m_innerNonSharedNode.get());
+        return displayString(image->alt(), m_innerNonSharedNode.get());
+    }
+    
+    if (m_innerNonSharedNode->hasTagName(inputTag)) {
+        HTMLInputElement* input = static_cast<HTMLInputElement*>(m_innerNonSharedNode.get());
+        return displayString(input->alt(), m_innerNonSharedNode.get());
+    }
+    
+    return String();
+}
+
+Image* HitTestResult::image() const
+{
+    if (!m_innerNonSharedNode)
+        return 0;
+    
+    RenderObject* renderer = m_innerNonSharedNode->renderer();
+    if (renderer && renderer->isImage()) {
+        RenderImage* image = static_cast<WebCore::RenderImage*>(renderer);
+        if (image->cachedImage() && !image->cachedImage()->errorOccurred())
+            return image->cachedImage()->image();
+    }
+
+    return 0;
+}
+
+IntRect HitTestResult::imageRect() const
+{
+    if (!image())
+        return IntRect();
+    return m_innerNonSharedNode->renderer()->absoluteContentBox();
+}
+
+KURL HitTestResult::absoluteImageURL() const
+{
+    if (!(m_innerNonSharedNode && m_innerNonSharedNode->document()))
+        return KURL();
+
+    if (!(m_innerNonSharedNode->renderer() && m_innerNonSharedNode->renderer()->isImage()))
+        return KURL();
+
+    AtomicString urlString;
+    if (m_innerNonSharedNode->hasTagName(imgTag) || m_innerNonSharedNode->hasTagName(inputTag))
+        urlString = static_cast<Element*>(m_innerNonSharedNode.get())->getAttribute(srcAttr);
+#if ENABLE(SVG)
+    else if (m_innerNonSharedNode->hasTagName(SVGNames::imageTag))
+        urlString = static_cast<Element*>(m_innerNonSharedNode.get())->getAttribute(XLinkNames::hrefAttr);
+#endif
+    else if (m_innerNonSharedNode->hasTagName(objectTag))
+        urlString = static_cast<Element*>(m_innerNonSharedNode.get())->getAttribute(dataAttr);
+    else
+        return KURL();
+    
+    return m_innerNonSharedNode->document()->completeURL(parseURL(urlString));
+}
+
+KURL HitTestResult::absoluteLinkURL() const
+{
+    if (!(m_innerURLElement && m_innerURLElement->document()))
+        return KURL();
+
+    AtomicString urlString;
+    if (m_innerURLElement->hasTagName(aTag) || m_innerURLElement->hasTagName(areaTag) || m_innerURLElement->hasTagName(linkTag))
+        urlString = m_innerURLElement->getAttribute(hrefAttr);
+#if ENABLE(SVG)
+    else if (m_innerURLElement->hasTagName(SVGNames::aTag))
+        urlString = m_innerURLElement->getAttribute(XLinkNames::hrefAttr);
+#endif
+    else
+        return KURL();
+
+    return m_innerURLElement->document()->completeURL(parseURL(urlString));
+}
+
+bool HitTestResult::isLiveLink() const
+{
+    if (!(m_innerURLElement && m_innerURLElement->document()))
+        return false;
+
+    if (m_innerURLElement->hasTagName(aTag))
+        return static_cast<HTMLAnchorElement*>(m_innerURLElement.get())->isLiveLink();
+#if ENABLE(SVG)
+    if (m_innerURLElement->hasTagName(SVGNames::aTag))
+        return m_innerURLElement->isLink();
+#endif
+    
+    return false;
+}
+
+String HitTestResult::titleDisplayString() const
+{
+    if (!m_innerURLElement)
+        return String();
+    
+    return displayString(m_innerURLElement->title(), m_innerURLElement.get());
+}
+
+String HitTestResult::textContent() const
+{
+    if (!m_innerURLElement)
+        return String();
+    return m_innerURLElement->textContent();
+}
+
+// FIXME: This function needs a better name and may belong in a different class. It's not
+// really isContentEditable(); it's more like needsEditingContextMenu(). In many ways, this
+// function would make more sense in the ContextMenu class, except that WebElementDictionary 
+// hooks into it. Anyway, we should architect this better. 
+bool HitTestResult::isContentEditable() const
+{
+    if (!m_innerNonSharedNode)
+        return false;
+
+    if (m_innerNonSharedNode->hasTagName(textareaTag) || m_innerNonSharedNode->hasTagName(isindexTag))
+        return true;
+
+    if (m_innerNonSharedNode->hasTagName(inputTag))
+        return static_cast<HTMLInputElement*>(m_innerNonSharedNode.get())->isTextField();
+
+    return m_innerNonSharedNode->isContentEditable();
+}
+
+} // namespace WebCore