Prevent remaining keypress actions if textInput was canceled

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 3537 matching lines @@
         target = underlyingEvent->target();
     else
         target = eventTargetNodeForDocument(m_frame->document());
     if (!target)
         return false;
 
     RefPtrWillBeRawPtr<TextEvent> event = TextEvent::create(m_frame->domWindow(), text, inputType);
     event->setUnderlyingEvent(underlyingEvent);
 
     target->dispatchEvent(event);
-    return event->defaultHandled();
+    return event->defaultHandled() || event->defaultPrevented();
 }
 
 void EventHandler::defaultTextInputEventHandler(TextEvent* event)
 {
     if (m_frame->editor().handleTextEvent(event))
         event->setDefaultHandled();
 }
 
 void EventHandler::defaultSpaceEventHandler(KeyboardEvent* event)
 {
@@ skipping 600 matching lines @@
 PlatformEvent::Modifiers EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return static_cast<PlatformEvent::Modifiers>(PlatformEvent::CtrlKey | PlatformEvent::AltKey);
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink