Delay dispatching DOMContentLoaded event to next event loop.

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 435 matching lines @@
     , m_frame(initializer.frame())
     , m_domWindow(m_frame ? m_frame->domWindow() : 0)
     , m_importsController(initializer.importsController())
     , m_activeParserCount(0)
     , m_contextFeatures(ContextFeatures::defaultSwitch())
     , m_wellFormed(false)
     , m_printing(false)
     , m_paginatedForScreen(false)
     , m_compatibilityMode(NoQuirksMode)
     , m_compatibilityModeLocked(false)
+    , m_hasFiredDOMContentLoadedEvent(false)
+    , m_dispatchDOMContentLoadedTimer(this, &Document::dispatchDOMContentLoadedTimerFired)
     , m_executeScriptsWaitingForResourcesTimer(this, &Document::executeScriptsWaitingForResourcesTimerFired)
     , m_hasAutofocused(false)
     , m_clearFocusedElementTimer(this, &Document::clearFocusedElementTimerFired)
     , m_domTreeVersion(++s_globalTreeVersion)
     , m_listenerTypes(0)
     , m_mutationObserverTypes(0)
     , m_visitedLinkState(VisitedLinkState::create(*this))
     , m_visuallyOrdered(false)
     , m_readyState(Complete)
     , m_isParsing(false)
@@ skipping 4136 matching lines @@
 PassRefPtrWillBeRawPtr<HTMLCollection> Document::windowNamedItems(const AtomicString& name)
 {
     return ensureCachedCollection<WindowNameCollection>(WindowNamedItems, name);
 }
 
 PassRefPtrWillBeRawPtr<DocumentNameCollection> Document::documentNamedItems(const AtomicString& name)
 {
     return ensureCachedCollection<DocumentNameCollection>(DocumentNamedItems, name);
 }
 
-void Document::finishedParsing()
+void Document::dispatchDOMContentLoadedTimerFired(Timer<Document>*)
 {
-    ASSERT(!scriptableDocumentParser() || !m_parser->isParsing());
-    ASSERT(!scriptableDocumentParser() || m_readyState != Loading);
-    setParsing(false);
     if (!m_documentTiming.domContentLoadedEventStart)
         m_documentTiming.domContentLoadedEventStart = monotonicallyIncreasingTime();
     dispatchEvent(Event::createBubble(EventTypeNames::DOMContentLoaded));
     if (!m_documentTiming.domContentLoadedEventEnd)
         m_documentTiming.domContentLoadedEventEnd = monotonicallyIncreasingTime();
 
+    m_hasFiredDOMContentLoadedEvent = true;
+
+    if (RefPtrWillBeRawPtr<LocalFrame> frame = this->frame()) {
+        TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "MarkDOMContent", "data", InspectorMarkLoadEvent::data(frame.get()));
+        // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
+        InspectorInstrumentation::domContentLoadedEventFired(frame.get());
+
+        frame->loader().checkLoadComplete();
+    }
+}
+
+// FIXME: Document should be a DocumentParserClient and this should be replaced with its notifyParserStopped() callback
+void Document::finishedParsing()
+{
+    ASSERT(!scriptableDocumentParser() || !m_parser->isParsing());
+    ASSERT(!scriptableDocumentParser() || m_readyState != Loading);
+    setParsing(false);
+    m_dispatchDOMContentLoadedTimer.startOneShot(0, FROM_HERE);
+
     // The loader's finishedParsing() method may invoke script that causes this object to
     // be dereferenced (when this document is in an iframe and the onload causes the iframe's src to change).
     // Keep it alive until we are done.
     RefPtrWillBeRawPtr<Document> protect(this);
 
     if (RefPtrWillBeRawPtr<LocalFrame> frame = this->frame()) {
         // Don't update the render tree if we haven't requested the main resource yet to avoid
         // adding extra latency. Note that the first render tree update can be expensive since it
         // triggers the parsing of the default stylesheets which are compiled-in.
         const bool mainResourceWasAlreadyRequested = frame->loader().stateMachine()->committedFirstRealDocumentLoad();
 
         // FrameLoader::finishedParsing() might end up calling Document::implicitClose() if all
         // resource loads are complete. HTMLObjectElements can start loading their resources from
         // post attach callbacks triggered by recalcStyle().  This means if we parse out an <object>
         // tag and then reach the end of the document without updating styles, we might not have yet
         // started the resource load and might fire the window load event too early.  To avoid this
         // we force the styles to be up to date before calling FrameLoader::finishedParsing().
         // See https://bugs.webkit.org/show_bug.cgi?id=36864 starting around comment 35.
         if (mainResourceWasAlreadyRequested)
             updateRenderTreeIfNeeded();
 
         frame->loader().finishedParsing();
-
-        TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "MarkDOMContent", "data", InspectorMarkLoadEvent::data(frame.get()));
-        // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
-        InspectorInstrumentation::domContentLoadedEventFired(frame.get());
     }
 
     // Schedule dropping of the ElementDataCache. We keep it alive for a while after parsing finishes
     // so that dynamically inserted content can also benefit from sharing optimizations.
     // Note that we don't refresh the timer on cache access since that could lead to huge caches being kept
     // alive indefinitely by something innocuous like JS setting .innerHTML repeatedly on a timer.
     m_elementDataCacheClearTimer.startOneShot(10, FROM_HERE);
 
     // Parser should have picked up all preloads by now
     m_fetcher->clearPreloads();
@@ skipping 1164 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().string().utf8().data());
 }
 #endif