1 /* 2 * Copyright (C) 2008 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef WorkerContext_h 28 #define WorkerContext_h 29 30 #if ENABLE(WORKERS) 31 32 #include "AtomicStringHash.h" 33 #include "EventListener.h" 34 #include "EventTarget.h" 35 #include "ScriptExecutionContext.h" 36 #include "WorkerScriptController.h" 37 #include <wtf/OwnPtr.h> 38 #include <wtf/PassRefPtr.h> 39 #include <wtf/RefCounted.h> 40 #include <wtf/RefPtr.h> 41 42 namespace WebCore { 43 44 class WorkerLocation; 45 class WorkerNavigator; 46 class WorkerThread; 47 48 class WorkerContext : public RefCounted<WorkerContext>, public ScriptExecutionContext, public EventTarget { 49 public: create(const KURL & url,const String & userAgent,WorkerThread * thread)50 static PassRefPtr<WorkerContext> create(const KURL& url, const String& userAgent, WorkerThread* thread) 51 { 52 return adoptRef(new WorkerContext(url, userAgent, thread)); 53 } 54 55 virtual ~WorkerContext(); 56 isWorkerContext()57 virtual bool isWorkerContext() const { return true; } 58 59 virtual ScriptExecutionContext* scriptExecutionContext() const; 60 url()61 const KURL& url() const { return m_url; } 62 KURL completeURL(const String&) const; 63 location()64 WorkerLocation* location() const { return m_location.get(); } 65 WorkerNavigator* navigator() const; 66 script()67 WorkerScriptController* script() { return m_script.get(); } clearScript()68 void clearScript() { return m_script.clear(); } thread()69 WorkerThread* thread() { return m_thread; } 70 71 bool hasPendingActivity() const; 72 73 virtual void reportException(const String& errorMessage, int lineNumber, const String& sourceURL); 74 virtual void addMessage(MessageDestination, MessageSource, MessageLevel, const String& message, unsigned lineNumber, const String& sourceURL); 75 virtual void resourceRetrievedByXMLHttpRequest(unsigned long identifier, const ScriptString& sourceString); 76 toWorkerContext()77 virtual WorkerContext* toWorkerContext() { return this; } 78 79 void postMessage(const String& message); 80 virtual void postTask(PassRefPtr<Task>); // Executes the task on context's thread asynchronously. 81 void postTaskToParentContext(PassRefPtr<Task>); // Executes the task in the parent's context (and thread) asynchronously. 82 83 virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture); 84 virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture); 85 virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&); 86 setOnmessage(PassRefPtr<EventListener> eventListener)87 void setOnmessage(PassRefPtr<EventListener> eventListener) { m_onmessageListener = eventListener; } onmessage()88 EventListener* onmessage() const { return m_onmessageListener.get(); } 89 90 typedef Vector<RefPtr<EventListener> > ListenerVector; 91 typedef HashMap<AtomicString, ListenerVector> EventListenersMap; eventListeners()92 EventListenersMap& eventListeners() { return m_eventListeners; } 93 94 using RefCounted<WorkerContext>::ref; 95 using RefCounted<WorkerContext>::deref; 96 97 private: refScriptExecutionContext()98 virtual void refScriptExecutionContext() { ref(); } derefScriptExecutionContext()99 virtual void derefScriptExecutionContext() { deref(); } refEventTarget()100 virtual void refEventTarget() { ref(); } derefEventTarget()101 virtual void derefEventTarget() { deref(); } 102 103 WorkerContext(const KURL&, const String&, WorkerThread*); 104 105 virtual const KURL& virtualURL() const; 106 virtual KURL virtualCompleteURL(const String&) const; 107 108 KURL m_url; 109 String m_userAgent; 110 RefPtr<WorkerLocation> m_location; 111 mutable RefPtr<WorkerNavigator> m_navigator; 112 113 OwnPtr<WorkerScriptController> m_script; 114 WorkerThread* m_thread; 115 116 RefPtr<EventListener> m_onmessageListener; 117 EventListenersMap m_eventListeners; 118 }; 119 120 } // namespace WebCore 121 122 #endif // ENABLE(WORKERS) 123 124 #endif // WorkerContext_h 125