Add loadend event when finishing loading image

third_party/WebKit/Source/core/loader/ImageLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 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.
  *
@@ skipping 279 matching lines @@
         if (isHTMLPictureElement(element()->parentNode()) || !element()->fastGetAttribute(HTMLNames::srcsetAttr).isNull())
             resourceRequest.setRequestContext(WebURLRequest::RequestContextImageSet);
         FetchRequest request(resourceRequest, element()->localName(), resourceLoaderOptions);
         configureRequest(request, bypassBehavior, *m_element, document.clientHintsPreferences());
 
         newImage = ImageResource::fetch(request, document.fetcher());
 
         if (!newImage && !pageIsBeingDismissed(&document)) {
             crossSiteOrCSPViolationOccurred(imageSourceURL);
             dispatchErrorEvent();
+            dispatchLoadendEventSoon();
         } else {
             clearFailedLoadURL();
         }
     } else {
         if (!imageSourceURL.isNull()) {
             // Fire an error event if the url string is not empty, but the KURL is.
             dispatchErrorEvent();
+            dispatchLoadendEventSoon();
         }
         noImageResourceToLoad();
     }
 
     ImageResource* oldImage = m_image.get();
     if (updateBehavior == UpdateSizeChanged && m_element->layoutObject() && m_element->layoutObject()->isImage() && newImage == oldImage) {
         toLayoutImage(m_element->layoutObject())->intrinsicSizeChanged();
     } else {
         if (m_hasPendingLoadEvent) {
             loadEventSender().cancelEvent(this);
@@ skipping 223 matching lines @@
 }
 
 void ImageLoader::timerFired(TimerBase*)
 {
     m_keepAlive.clear();
 }
 
 void ImageLoader::dispatchPendingEvent(ImageEventSender* eventSender)
 {
     RESOURCE_LOADING_DVLOG(1) << "ImageLoader::dispatchPendingEvent " << this;
-    ASSERT(eventSender == &loadEventSender() || eventSender == &errorEventSender());
     const AtomicString& eventType = eventSender->eventType();
     if (eventType == EventTypeNames::load)
         dispatchPendingLoadEvent();
     if (eventType == EventTypeNames::error)
         dispatchPendingErrorEvent();
+    if (eventType == EventTypeNames::loadend)
+        dispatchPendingLoadendEvent();
 }
 
 void ImageLoader::dispatchPendingLoadEvent()
 {
     if (!m_hasPendingLoadEvent)
         return;
     if (!m_image)
         return;
     m_hasPendingLoadEvent = false;
     if (element()->document().frame())
@@ skipping 11 matching lines @@
     m_hasPendingErrorEvent = false;
 
     if (element()->document().frame())
         element()->dispatchEvent(Event::create(EventTypeNames::error));
 
     // Only consider updating the protection ref-count of the Element immediately before returning
     // from this function as doing so might result in the destruction of this ImageLoader.
     updatedHasPendingEvent();
 }
 
+void ImageLoader::dispatchPendingLoadendEvent()
+{
+    if (element()->document().frame()) {
+        dispatchLoadendEvent();
+    }
+
+    updatedHasPendingEvent();
+}
+
 bool ImageLoader::getImageAnimationPolicy(ImageAnimationPolicy& policy)
 {
     if (!element()->document().settings())
         return false;
 
     policy = element()->document().settings()->imageAnimationPolicy();
     return true;
 }
 
 void ImageLoader::dispatchPendingLoadEvents()
 {
     loadEventSender().dispatchPendingEvents();
 }
 
 void ImageLoader::dispatchPendingErrorEvents()
 {
     errorEventSender().dispatchPendingEvents();
 }
 
 void ImageLoader::elementDidMoveToNewDocument()
 {
     if (m_loadDelayCounter)
         m_loadDelayCounter->documentChanged(m_element->document());
     clearFailedLoadURL();
     setImage(0);
 }
 
 } // namespace blink