Track reasons for |Node::SetNeedsStyleRecalc|

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 1187 matching lines @@
     setEncodingData(newEncodingData);
 }
 
 void Document::setContentLanguage(const AtomicString& language)
 {
     if (m_contentLanguage == language)
         return;
     m_contentLanguage = language;
 
     // Document's style depends on the content language.
-    setNeedsStyleRecalc(SubtreeStyleChange);
+    setNeedsStyleRecalc(StyleRecalcDueToLanguage, SubtreeStyleChange);
 }
 
 void Document::setXMLVersion(const String& version, ExceptionState& exceptionState)
 {
     if (!XMLDocumentParser::supportsXMLVersion(version)) {
         exceptionState.throwDOMException(NotSupportedError, "This document does not support the XML version '" + version + "'.");
         return;
     }
 
     m_xmlVersion = version;
@@ skipping 510 matching lines @@
 
     // Resolved rem units are stored in the matched properties cache so we need to make sure to
     // invalidate the cache if the documentElement needed to reattach or the font size changed
     // and then trigger a full document recalc. We also need to clear it here since the
     // call to styleForElement on the body above can cache bad values for rem units if the
     // documentElement's style was dirty. We could keep track of which elements depend on
     // rem units like we do for viewport styles, but we assume root font size changes are
     // rare and just invalidate the cache for now.
     if (styleEngine()->usesRemUnits() && (documentElement()->needsAttach() || documentElement()->computedStyle()->fontSize() != documentElementStyle->fontSize())) {
         ensureStyleResolver().invalidateMatchedPropertiesCache();
-        documentElement()->setNeedsStyleRecalc(SubtreeStyleChange);
+        documentElement()->setNeedsStyleRecalc(StyleRecalcDueToFontSizeChange, SubtreeStyleChange);
     }
 
     EOverflow overflowX = OAUTO;
     EOverflow overflowY = OAUTO;
     float columnGap = 0;
     if (overflowStyle) {
         overflowX = overflowStyle->overflowX();
         overflowY = overflowStyle->overflowY();
         // Visible overflow on the viewport is meaningless, and the spec says to treat it as 'auto':
         if (overflowX == OVISIBLE)
@@ skipping 17 matching lines @@
         newStyle->setColumnGap(columnGap);
         newStyle->setOverflowX(overflowX);
         newStyle->setOverflowY(overflowY);
         renderView()->setStyle(newStyle);
         setupFontBuilder(newStyle.get());
     }
 
     if (body) {
         if (RenderStyle* style = body->renderStyle()) {
             if (style->direction() != rootDirection || style->writingMode() != rootWritingMode)
-                body->setNeedsStyleRecalc(SubtreeStyleChange);
+                body->setNeedsStyleRecalc(StyleRecalcDueToWritingModeChange, SubtreeStyleChange);
         }
     }
 
     if (RenderStyle* style = documentElement()->renderStyle()) {
         if (style->direction() != rootDirection || style->writingMode() != rootWritingMode)
-            documentElement()->setNeedsStyleRecalc(SubtreeStyleChange);
+            documentElement()->setNeedsStyleRecalc(StyleRecalcDueToWritingModeChange, SubtreeStyleChange);
     }
 }
 
 void Document::updateRenderTree(StyleRecalcChange change)
 {
     ASSERT(isMainThread());
 
     ScriptForbiddenScope forbidScript;
 
     if (!view() || !isActive())
@@ skipping 162 matching lines @@
 
     if (frameView->needsLayout())
         frameView->layout();
 
     if (lifecycle().state() < DocumentLifecycle::LayoutClean)
         lifecycle().advanceTo(DocumentLifecycle::LayoutClean);
 }
 
 void Document::setNeedsFocusedElementCheck()
 {
-    setNeedsStyleRecalc(LocalStyleChange);
+    setNeedsStyleRecalc(StyleRecalcDueToFocusPseudoClass, LocalStyleChange);
 }
 
 void Document::clearFocusedElementSoon()
 {
     if (!m_clearFocusedElementTimer.isActive())
         m_clearFocusedElementTimer.startOneShot(0, FROM_HERE);
 }
 
 void Document::clearFocusedElementTimerFired(Timer<Document>*)
 {
@@ skipping 105 matching lines @@
     setSecurityOrigin(SecurityOrigin::createUnique());
     didUpdateSecurityOrigin();
 }
 
 bool Document::dirtyElementsForLayerUpdate()
 {
     if (m_layerUpdateSVGFilterElements.isEmpty())
         return false;
 
     for (WillBeHeapHashSet<RawPtrWillBeMember<Element> >::iterator it = m_layerUpdateSVGFilterElements.begin(), end = m_layerUpdateSVGFilterElements.end(); it != end; ++it)
-        (*it)->setNeedsStyleRecalc(LocalStyleChange);
+        (*it)->setNeedsStyleRecalc(StyleRecalcDueToSVGFilterLayerUpdateHack, LocalStyleChange);

[pdr., 2014/09/06 22:36:27]

We should probably just call this one StyleRecalcDueToSVGFilterLayerUpdate.

[kouhei (in TOK), 2014/09/08 23:29:12]

Done.

     m_layerUpdateSVGFilterElements.clear();
     return true;
 }
 
 void Document::scheduleSVGFilterLayerUpdateHack(Element& element)
 {
     if (element.styleChangeType() == NeedsReattachStyleChange)
         return;
     element.setSVGFilterNeedsLayerUpdate();
     m_layerUpdateSVGFilterElements.add(&element);
@@ skipping 2205 matching lines @@
 
     m_encodingData = newData;
 
     // FIXME: Should be removed as part of https://code.google.com/p/chromium/issues/detail?id=319643
     bool shouldUseVisualOrdering = m_encodingData.encoding().usesVisualOrdering();
     if (shouldUseVisualOrdering != m_visuallyOrdered) {
         m_visuallyOrdered = shouldUseVisualOrdering;
         // FIXME: How is possible to not have a renderer here?
         if (renderView())
             renderView()->style()->setRTLOrdering(m_visuallyOrdered ? VisualOrder : LogicalOrder);
-        setNeedsStyleRecalc(SubtreeStyleChange);
+        setNeedsStyleRecalc(StyleRecalcDueToVisuallyOrdered, SubtreeStyleChange);
     }
 }
 
 KURL Document::completeURL(const String& url) const
 {
     return completeURLWithOverride(url, m_baseURL);
 }
 
 KURL Document::completeURLWithOverride(const String& url, const KURL& baseURLOverride) const
 {
@@ skipping 141 matching lines @@
 }
 
 void Document::setDesignMode(InheritedBool value)
 {
     m_designMode = value;
     for (Frame* frame = m_frame; frame; frame = frame->tree().traverseNext(m_frame)) {
         if (!frame->isLocalFrame())
             continue;
         if (!toLocalFrame(frame)->document())
             break;
-        toLocalFrame(frame)->document()->setNeedsStyleRecalc(SubtreeStyleChange);
+        toLocalFrame(frame)->document()->setNeedsStyleRecalc(StyleRecalcDueToDesignMode, SubtreeStyleChange);
     }
 }
 
 Document::InheritedBool Document::getDesignMode() const
 {
     return m_designMode;
 }
 
 bool Document::inDesignMode() const
 {
@@ skipping 1360 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif