Add error dispatch events to SVGStyleElement

Source/core/svg/SVGStyleElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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 "core/svg/SVGStyleElement.h"
 
 #include "core/MediaTypeNames.h"
 #include "core/css/CSSStyleSheet.h"
+#include "core/events/Event.h"
+#include "core/events/EventSender.h"
+#include "platform/Timer.h"
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
 
+static SVGStyleEventSender& styleErrorEventSender()
+{
+    DEFINE_STATIC_LOCAL(SVGStyleEventSender, sharedErrorEventSender, (EventTypeNames::error));
+    return sharedErrorEventSender;
+}
+
 inline SVGStyleElement::SVGStyleElement(Document& document, bool createdByParser)
     : SVGElement(SVGNames::styleTag, document)
     , StyleElement(&document, createdByParser)
     , m_svgLoadEventTimer(this, &SVGElement::svgLoadEventTimerFired)
 {
 }
 
 SVGStyleElement::~SVGStyleElement()
 {
 #if !ENABLE(OILPAN)
@@ skipping 60 matching lines @@
             m_sheet->setTitle(value);
 
         return;
     }
 
     SVGElement::parseAttribute(name, value);
 }
 
 void SVGStyleElement::finishParsingChildren()
 {
-    StyleElement::finishParsingChildren(this);
+    StyleElement::ProcessingResult result = StyleElement::finishParsingChildren(this);
     SVGElement::finishParsingChildren();
+    if (result == StyleElement::ProcessingFatalError)
+        sendSVGErrorEventAsynchronously();
 }
 
 Node::InsertionNotificationRequest SVGStyleElement::insertedInto(ContainerNode* insertionPoint)
 {
     SVGElement::insertedInto(insertionPoint);
     StyleElement::insertedInto(this, insertionPoint);
     return InsertionShouldCallDidNotifySubtreeInsertions;
 }
 
 void SVGStyleElement::didNotifySubtreeInsertionsToDocument()
 {
-    StyleElement::processStyleSheet(document(), this);
+    if (StyleElement::processStyleSheet(document(), this) == StyleElement::ProcessingFatalError)
+        sendSVGErrorEventAsynchronously();
 }
 
 void SVGStyleElement::removedFrom(ContainerNode* insertionPoint)
 {
     SVGElement::removedFrom(insertionPoint);
     StyleElement::removedFrom(this, insertionPoint);
 }
 
 void SVGStyleElement::childrenChanged(const ChildrenChange& change)
 {
     SVGElement::childrenChanged(change);
-    StyleElement::childrenChanged(this);
+    if (StyleElement::childrenChanged(this) == StyleElement::ProcessingFatalError)
+        sendSVGErrorEventAsynchronously();
+}
+
+void SVGStyleElement::sendSVGErrorEventAsynchronously()
+{
+    styleErrorEventSender().dispatchEventSoon(this);
+}
+
+void SVGStyleElement::dispatchPendingEvent(SVGStyleEventSender* eventSender)
+{
+    ASSERT_UNUSED(eventSender, eventSender == &styleErrorEventSender());
+    dispatchEvent(Event::create(EventTypeNames::error));
 }
 
 DEFINE_TRACE(SVGStyleElement)
 {
     StyleElement::trace(visitor);
     SVGElement::trace(visitor);
 }
 
 }