1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef AbstractWorker_h 32 #define AbstractWorker_h 33 34 #if ENABLE(WORKERS) 35 36 #include "ActiveDOMObject.h" 37 #include "AtomicStringHash.h" 38 #include "EventListener.h" 39 #include "EventTarget.h" 40 #include <wtf/PassRefPtr.h> 41 #include <wtf/RefCounted.h> 42 #include <wtf/RefPtr.h> 43 44 namespace WebCore { 45 46 class KURL; 47 class ScriptExecutionContext; 48 49 class AbstractWorker : public RefCounted<AbstractWorker>, public ActiveDOMObject, public EventTarget { 50 public: 51 // EventTarget APIs scriptExecutionContext()52 virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); } 53 54 virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture); 55 virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture); 56 virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&); 57 58 // Utility routines to generate appropriate error events for loading and script exceptions. 59 void dispatchLoadErrorEvent(); 60 bool dispatchScriptErrorEvent(const String& errorMessage, const String& sourceURL, int); 61 setOnerror(PassRefPtr<EventListener> eventListener)62 void setOnerror(PassRefPtr<EventListener> eventListener) { m_onErrorListener = eventListener; } onerror()63 EventListener* onerror() const { return m_onErrorListener.get(); } 64 typedef Vector<RefPtr<EventListener> > ListenerVector; 65 typedef HashMap<AtomicString, ListenerVector> EventListenersMap; eventListeners()66 EventListenersMap& eventListeners() { return m_eventListeners; } 67 68 using RefCounted<AbstractWorker>::ref; 69 using RefCounted<AbstractWorker>::deref; 70 71 AbstractWorker(ScriptExecutionContext*); 72 virtual ~AbstractWorker(); 73 74 protected: 75 // Helper function that converts a URL to an absolute URL and checks the result for validity. 76 KURL resolveURL(const String& url, ExceptionCode& ec); 77 78 private: refEventTarget()79 virtual void refEventTarget() { ref(); } derefEventTarget()80 virtual void derefEventTarget() { deref(); } 81 82 RefPtr<EventListener> m_onErrorListener; 83 EventListenersMap m_eventListeners; 84 }; 85 86 } // namespace WebCore 87 88 #endif // ENABLE(WORKERS) 89 90 #endif // AbstractWorker_h 91