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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/162962">162962</a></dd>
<dt>Author</dt> <dd>antti@apple.com</dd>
<dt>Date</dt> <dd>2014-01-28 14:32:05 -0800 (Tue, 28 Jan 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Document::topDocument() should return a reference
https://bugs.webkit.org/show_bug.cgi?id=127786
Reviewed by Darin Adler.
* accessibility/AccessibilityObject.cpp:
(WebCore::AccessibilityObject::mainFrame):
(WebCore::AccessibilityObject::topDocument):
* accessibility/ios/WebAccessibilityObjectWrapperIOS.mm:
(-[WebAccessibilityObjectWrapper accessibilityContainer]):
* dom/Document.cpp:
(WebCore::Document::~Document):
(WebCore::Document::createRenderTree):
(WebCore::Document::destroyRenderTree):
(WebCore::Document::clearAXObjectCache):
(WebCore::Document::existingAXObjectCache):
(WebCore::Document::axObjectCache):
(WebCore::Document::implicitClose):
(WebCore::Document::topDocument):
(WebCore::Document::topOrigin):
(WebCore::Document::webkitCancelFullScreen):
(WebCore::Document::webkitDidExitFullScreenForElement):
* dom/Document.h:
* page/DOMWindow.cpp:
(WebCore::DOMWindow::incrementScrollEventListenersCount):
(WebCore::DOMWindow::decrementScrollEventListenersCount):
* rendering/RenderEmbeddedObject.cpp:
(WebCore::RenderEmbeddedObject::isReplacementObscured):
* rendering/RenderView.cpp:
(WebCore::RenderView::RepaintRegionAccumulator::RepaintRegionAccumulator):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityAccessibilityObjectcpp">trunk/Source/WebCore/accessibility/AccessibilityObject.cpp</a></li>
<li><a href="#trunkSourceWebCoreaccessibilityiosWebAccessibilityObjectWrapperIOSmm">trunk/Source/WebCore/accessibility/ios/WebAccessibilityObjectWrapperIOS.mm</a></li>
<li><a href="#trunkSourceWebCoredomDocumentcpp">trunk/Source/WebCore/dom/Document.cpp</a></li>
<li><a href="#trunkSourceWebCoredomDocumenth">trunk/Source/WebCore/dom/Document.h</a></li>
<li><a href="#trunkSourceWebCorepageDOMWindowcpp">trunk/Source/WebCore/page/DOMWindow.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderEmbeddedObjectcpp">trunk/Source/WebCore/rendering/RenderEmbeddedObject.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderViewcpp">trunk/Source/WebCore/rendering/RenderView.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/ChangeLog 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -1,3 +1,36 @@
</span><ins>+2014-01-28 Antti Koivisto <antti@apple.com>
+
+ Document::topDocument() should return a reference
+ https://bugs.webkit.org/show_bug.cgi?id=127786
+
+ Reviewed by Darin Adler.
+
+ * accessibility/AccessibilityObject.cpp:
+ (WebCore::AccessibilityObject::mainFrame):
+ (WebCore::AccessibilityObject::topDocument):
+ * accessibility/ios/WebAccessibilityObjectWrapperIOS.mm:
+ (-[WebAccessibilityObjectWrapper accessibilityContainer]):
+ * dom/Document.cpp:
+ (WebCore::Document::~Document):
+ (WebCore::Document::createRenderTree):
+ (WebCore::Document::destroyRenderTree):
+ (WebCore::Document::clearAXObjectCache):
+ (WebCore::Document::existingAXObjectCache):
+ (WebCore::Document::axObjectCache):
+ (WebCore::Document::implicitClose):
+ (WebCore::Document::topDocument):
+ (WebCore::Document::topOrigin):
+ (WebCore::Document::webkitCancelFullScreen):
+ (WebCore::Document::webkitDidExitFullScreenForElement):
+ * dom/Document.h:
+ * page/DOMWindow.cpp:
+ (WebCore::DOMWindow::incrementScrollEventListenersCount):
+ (WebCore::DOMWindow::decrementScrollEventListenersCount):
+ * rendering/RenderEmbeddedObject.cpp:
+ (WebCore::RenderEmbeddedObject::isReplacementObscured):
+ * rendering/RenderView.cpp:
+ (WebCore::RenderView::RepaintRegionAccumulator::RepaintRegionAccumulator):
+
</ins><span class="cx"> 2014-01-28 Viatcheslav Ostapenko <sl.ostapenko@samsung.com>
</span><span class="cx">
</span><span class="cx"> Sticky positioning is broken for table rows
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityAccessibilityObjectcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/AccessibilityObject.cpp (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/AccessibilityObject.cpp 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/accessibility/AccessibilityObject.cpp 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -609,11 +609,11 @@
</span><span class="cx"> {
</span><span class="cx"> Document* document = topDocument();
</span><span class="cx"> if (!document)
</span><del>- return 0;
</del><ins>+ return nullptr;
</ins><span class="cx">
</span><span class="cx"> Frame* frame = document->frame();
</span><span class="cx"> if (!frame)
</span><del>- return 0;
</del><ins>+ return nullptr;
</ins><span class="cx">
</span><span class="cx"> return &frame->mainFrame();
</span><span class="cx"> }
</span><span class="lines">@@ -621,8 +621,8 @@
</span><span class="cx"> Document* AccessibilityObject::topDocument() const
</span><span class="cx"> {
</span><span class="cx"> if (!document())
</span><del>- return 0;
- return document()->topDocument();
</del><ins>+ return nullptr;
+ return &document()->topDocument();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> String AccessibilityObject::language() const
</span></span></pre></div>
<a id="trunkSourceWebCoreaccessibilityiosWebAccessibilityObjectWrapperIOSmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/accessibility/ios/WebAccessibilityObjectWrapperIOS.mm (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/accessibility/ios/WebAccessibilityObjectWrapperIOS.mm 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/accessibility/ios/WebAccessibilityObjectWrapperIOS.mm 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -1109,7 +1109,7 @@
</span><span class="cx"> // Verify this is the top document. If not, we might need to go through the platform widget.
</span><span class="cx"> FrameView* frameView = m_object->documentFrameView();
</span><span class="cx"> Document* document = m_object->document();
</span><del>- if (document && frameView && document != document->topDocument())
</del><ins>+ if (document && frameView && document != &document->topDocument())
</ins><span class="cx"> return frameView->platformWidget();
</span><span class="cx">
</span><span class="cx"> // The top scroll view's parent is the web document view.
</span></span></pre></div>
<a id="trunkSourceWebCoredomDocumentcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/dom/Document.cpp (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/dom/Document.cpp 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/dom/Document.cpp 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -593,7 +593,7 @@
</span><span class="cx"> ASSERT(!m_parser || m_parser->refCount() == 1);
</span><span class="cx"> detachParser();
</span><span class="cx">
</span><del>- if (this == topDocument())
</del><ins>+ if (this == &topDocument())
</ins><span class="cx"> clearAXObjectCache();
</span><span class="cx">
</span><span class="cx"> m_decoder = nullptr;
</span><span class="lines">@@ -1947,7 +1947,7 @@
</span><span class="cx"> {
</span><span class="cx"> ASSERT(!renderView());
</span><span class="cx"> ASSERT(!m_inPageCache);
</span><del>- ASSERT(!m_axObjectCache || this != topDocument());
</del><ins>+ ASSERT(!m_axObjectCache || this != &topDocument());
</ins><span class="cx">
</span><span class="cx"> if (m_isNonRenderedPlaceholder)
</span><span class="cx"> return;
</span><span class="lines">@@ -2032,7 +2032,7 @@
</span><span class="cx">
</span><span class="cx"> TemporaryChange<bool> change(m_renderTreeBeingDestroyed, true);
</span><span class="cx">
</span><del>- if (this == topDocument())
</del><ins>+ if (this == &topDocument())
</ins><span class="cx"> clearAXObjectCache();
</span><span class="cx">
</span><span class="cx"> documentWillBecomeInactive();
</span><span class="lines">@@ -2167,7 +2167,7 @@
</span><span class="cx">
</span><span class="cx"> void Document::clearAXObjectCache()
</span><span class="cx"> {
</span><del>- ASSERT(topDocument() == this);
</del><ins>+ ASSERT(&topDocument() == this);
</ins><span class="cx"> // Clear the cache member variable before calling delete because attempts
</span><span class="cx"> // are made to access it during destruction.
</span><span class="cx"> m_axObjectCache.clear();
</span><span class="lines">@@ -2175,10 +2175,10 @@
</span><span class="cx">
</span><span class="cx"> AXObjectCache* Document::existingAXObjectCache() const
</span><span class="cx"> {
</span><del>- if (!topDocument()->hasLivingRenderTree())
</del><ins>+ Document& topDocument = this->topDocument();
+ if (!topDocument.hasLivingRenderTree())
</ins><span class="cx"> return nullptr;
</span><del>-
- return topDocument()->m_axObjectCache.get();
</del><ins>+ return topDocument.m_axObjectCache.get();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> AXObjectCache* Document::axObjectCache() const
</span><span class="lines">@@ -2190,16 +2190,16 @@
</span><span class="cx"> // document. This is because we need to be able to get from any WebCoreAXObject
</span><span class="cx"> // to any other WebCoreAXObject on the same page. Using a single cache allows
</span><span class="cx"> // lookups across nested webareas (i.e. multiple documents).
</span><del>- Document* topDocument = this->topDocument();
</del><ins>+ Document& topDocument = this->topDocument();
</ins><span class="cx">
</span><span class="cx"> // If the document has already been detached, do not make a new axObjectCache.
</span><del>- if (!topDocument->hasLivingRenderTree())
</del><ins>+ if (!topDocument.hasLivingRenderTree())
</ins><span class="cx"> return nullptr;
</span><span class="cx">
</span><del>- ASSERT(topDocument == this || !m_axObjectCache);
- if (!topDocument->m_axObjectCache)
- topDocument->m_axObjectCache = adoptPtr(new AXObjectCache(*topDocument));
- return topDocument->m_axObjectCache.get();
</del><ins>+ ASSERT(&topDocument == this || !m_axObjectCache);
+ if (!topDocument.m_axObjectCache)
+ topDocument.m_axObjectCache = adoptPtr(new AXObjectCache(topDocument));
+ return topDocument.m_axObjectCache.get();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void Document::setVisuallyOrdered()
</span><span class="lines">@@ -2468,7 +2468,7 @@
</span><span class="cx"> // exists in the cache (we ignore the return value because we don't need it here). This is
</span><span class="cx"> // only safe to call when a layout is not in progress, so it can not be used in postNotification.
</span><span class="cx"> axObjectCache()->getOrCreate(renderView());
</span><del>- if (this == topDocument())
</del><ins>+ if (this == &topDocument())
</ins><span class="cx"> axObjectCache()->postNotification(renderView(), AXObjectCache::AXLoadComplete);
</span><span class="cx"> else {
</span><span class="cx"> // AXLoadComplete can only be posted on the top document, so if it's a document
</span><span class="lines">@@ -4311,9 +4311,13 @@
</span><span class="cx"> return parent->document();
</span><span class="cx"> }
</span><span class="cx">
</span><del>-Document* Document::topDocument() const
</del><ins>+Document& Document::topDocument() const
</ins><span class="cx"> {
</span><del>- return m_frame ? m_frame->mainFrame().document() : const_cast<Document*>(this);
</del><ins>+ if (!m_frame)
+ return const_cast<Document&>(*this);
+ // This should always be non-null.
+ Document* mainFrameDocument = m_frame->mainFrame().document();
+ return mainFrameDocument ? *mainFrameDocument : const_cast<Document&>(*this);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> PassRefPtr<Attr> Document::createAttribute(const String& name, ExceptionCode& ec)
</span><span class="lines">@@ -4875,7 +4879,7 @@
</span><span class="cx">
</span><span class="cx"> SecurityOrigin* Document::topOrigin() const
</span><span class="cx"> {
</span><del>- return topDocument()->securityOrigin();
</del><ins>+ return topDocument().securityOrigin();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> struct PerformTaskContext {
</span><span class="lines">@@ -5222,16 +5226,17 @@
</span><span class="cx"> // is defined as:
</span><span class="cx"> // "To fully exit fullscreen act as if the exitFullscreen() method was invoked on the top-level browsing
</span><span class="cx"> // context's document and subsequently empty that document's fullscreen element stack."
</span><del>- if (!topDocument()->webkitFullscreenElement())
</del><ins>+ Document& topDocument = this->topDocument();
+ if (!topDocument.webkitFullscreenElement())
</ins><span class="cx"> return;
</span><span class="cx">
</span><span class="cx"> // To achieve that aim, remove all the elements from the top document's stack except for the first before
</span><span class="cx"> // calling webkitExitFullscreen():
</span><span class="cx"> Vector<RefPtr<Element>> replacementFullscreenElementStack;
</span><del>- replacementFullscreenElementStack.append(topDocument()->webkitFullscreenElement());
- topDocument()->m_fullScreenElementStack.swap(replacementFullscreenElementStack);
</del><ins>+ replacementFullscreenElementStack.append(topDocument.webkitFullscreenElement());
+ topDocument.m_fullScreenElementStack.swap(replacementFullscreenElementStack);
</ins><span class="cx">
</span><del>- topDocument()->webkitExitFullscreen();
</del><ins>+ topDocument.webkitExitFullscreen();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void Document::webkitExitFullscreen()
</span><span class="lines">@@ -5404,10 +5409,9 @@
</span><span class="cx"> // When webkitCancelFullScreen is called, we call webkitExitFullScreen on the topDocument(). That
</span><span class="cx"> // means that the events will be queued there. So if we have no events here, start the timer on
</span><span class="cx"> // the exiting document.
</span><del>- Document* exitingDocument = this;
- if (m_fullScreenChangeEventTargetQueue.isEmpty() && m_fullScreenErrorEventTargetQueue.isEmpty())
- exitingDocument = topDocument();
- exitingDocument->m_fullScreenChangeDelayTimer.startOneShot(0);
</del><ins>+ bool eventTargetQueuesEmpty = m_fullScreenChangeEventTargetQueue.isEmpty() && m_fullScreenErrorEventTargetQueue.isEmpty();
+ Document& exitingDocument = eventTargetQueuesEmpty ? topDocument() : *this;
+ exitingDocument.m_fullScreenChangeDelayTimer.startOneShot(0);
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void Document::setFullScreenRenderer(RenderFullScreen* renderer)
</span></span></pre></div>
<a id="trunkSourceWebCoredomDocumenth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/dom/Document.h (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/dom/Document.h 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/dom/Document.h 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -905,7 +905,7 @@
</span><span class="cx"> bool inDesignMode() const;
</span><span class="cx">
</span><span class="cx"> Document* parentDocument() const;
</span><del>- Document* topDocument() const;
</del><ins>+ Document& topDocument() const;
</ins><span class="cx">
</span><span class="cx"> ScriptRunner* scriptRunner() { return m_scriptRunner.get(); }
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorepageDOMWindowcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/DOMWindow.cpp (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/DOMWindow.cpp 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/page/DOMWindow.cpp 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -1695,7 +1695,7 @@
</span><span class="cx"> void DOMWindow::incrementScrollEventListenersCount()
</span><span class="cx"> {
</span><span class="cx"> Document* document = this->document();
</span><del>- if (++m_scrollEventListenerCount == 1 && document == document->topDocument()) {
</del><ins>+ if (++m_scrollEventListenerCount == 1 && document == &document->topDocument()) {
</ins><span class="cx"> Frame* frame = this->frame();
</span><span class="cx"> if (frame && frame->page())
</span><span class="cx"> frame->page()->chrome().client().setNeedsScrollNotifications(frame, true);
</span><span class="lines">@@ -1705,7 +1705,7 @@
</span><span class="cx"> void DOMWindow::decrementScrollEventListenersCount()
</span><span class="cx"> {
</span><span class="cx"> Document* document = this->document();
</span><del>- if (!--m_scrollEventListenerCount && document == document->topDocument()) {
</del><ins>+ if (!--m_scrollEventListenerCount && document == &document->topDocument()) {
</ins><span class="cx"> Frame* frame = this->frame();
</span><span class="cx"> if (frame && frame->page() && !document->inPageCache())
</span><span class="cx"> frame->page()->chrome().client().setNeedsScrollNotifications(frame, false);
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderEmbeddedObjectcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderEmbeddedObject.cpp (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderEmbeddedObject.cpp 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/rendering/RenderEmbeddedObject.cpp 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -424,7 +424,7 @@
</span><span class="cx"> if (rect.isEmpty())
</span><span class="cx"> return true;
</span><span class="cx">
</span><del>- RenderView* rootRenderView = document().topDocument()->renderView();
</del><ins>+ RenderView* rootRenderView = document().topDocument().renderView();
</ins><span class="cx"> ASSERT(rootRenderView);
</span><span class="cx"> if (!rootRenderView)
</span><span class="cx"> return true;
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderViewcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderView.cpp (162961 => 162962)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderView.cpp 2014-01-28 22:25:40 UTC (rev 162961)
+++ trunk/Source/WebCore/rendering/RenderView.cpp 2014-01-28 22:32:05 UTC (rev 162962)
</span><span class="lines">@@ -1266,7 +1266,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> RenderView::RepaintRegionAccumulator::RepaintRegionAccumulator(RenderView* view)
</span><del>- : m_rootView(view ? view->document().topDocument()->renderView() : nullptr)
</del><ins>+ : m_rootView(view ? view->document().topDocument().renderView() : nullptr)
</ins><span class="cx"> {
</span><span class="cx"> if (!m_rootView)
</span><span class="cx"> return;
</span></span></pre>
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