1 /* 2 * Copyright (C) 2008, 2009 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 ScheduledAction; 45 class WorkerLocation; 46 class WorkerNavigator; 47 class WorkerThread; 48 49 class WorkerContext : public RefCounted<WorkerContext>, public ScriptExecutionContext, public EventTarget { 50 public: 51 52 virtual ~WorkerContext(); 53 isWorkerContext()54 virtual bool isWorkerContext() const { return true; } 55 56 virtual ScriptExecutionContext* scriptExecutionContext() const; 57 isSharedWorkerContext()58 virtual bool isSharedWorkerContext() const { return false; } isDedicatedWorkerContext()59 virtual bool isDedicatedWorkerContext() const { return false; } 60 url()61 const KURL& url() const { return m_url; } 62 KURL completeURL(const String&) const; 63 64 virtual String userAgent(const KURL&) const; 65 script()66 WorkerScriptController* script() { return m_script.get(); } clearScript()67 void clearScript() { return m_script.clear(); } 68 thread()69 WorkerThread* thread() { return m_thread; } 70 71 bool hasPendingActivity() const; 72 73 virtual void resourceRetrievedByXMLHttpRequest(unsigned long identifier, const ScriptString& sourceString); 74 virtual void scriptImported(unsigned long identifier, const String& sourceString); 75 76 virtual void postTask(PassRefPtr<Task>); // Executes the task on context's thread asynchronously. 77 78 // WorkerGlobalScope self()79 WorkerContext* self() { return this; } 80 WorkerLocation* location() const; 81 void close(); setOnerror(PassRefPtr<EventListener> eventListener)82 void setOnerror(PassRefPtr<EventListener> eventListener) { m_onerrorListener = eventListener; } onerror()83 EventListener* onerror() const { return m_onerrorListener.get(); } 84 85 // WorkerUtils 86 virtual void importScripts(const Vector<String>& urls, const String& callerURL, int callerLine, ExceptionCode&); 87 WorkerNavigator* navigator() const; 88 89 // Timers 90 int setTimeout(ScheduledAction*, int timeout); 91 void clearTimeout(int timeoutId); 92 int setInterval(ScheduledAction*, int timeout); 93 void clearInterval(int timeoutId); 94 95 // EventTarget 96 virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture); 97 virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture); 98 virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&); 99 100 typedef Vector<RefPtr<EventListener> > ListenerVector; 101 typedef HashMap<AtomicString, ListenerVector> EventListenersMap; eventListeners()102 EventListenersMap& eventListeners() { return m_eventListeners; } 103 104 // ScriptExecutionContext 105 virtual void reportException(const String& errorMessage, int lineNumber, const String& sourceURL); 106 107 virtual void forwardException(const String& errorMessage, int lineNumber, const String& sourceURL) = 0; 108 109 // These methods are used for GC marking. See JSWorkerContext::markChildren(MarkStack&) in 110 // JSWorkerContextCustom.cpp. optionalNavigator()111 WorkerNavigator* optionalNavigator() const { return m_navigator.get(); } optionalLocation()112 WorkerLocation* optionalLocation() const { return m_location.get(); } 113 114 using RefCounted<WorkerContext>::ref; 115 using RefCounted<WorkerContext>::deref; 116 117 protected: 118 WorkerContext(const KURL&, const String&, WorkerThread*); isClosing()119 bool isClosing() { return m_closing; } 120 121 private: refScriptExecutionContext()122 virtual void refScriptExecutionContext() { ref(); } derefScriptExecutionContext()123 virtual void derefScriptExecutionContext() { deref(); } refEventTarget()124 virtual void refEventTarget() { ref(); } derefEventTarget()125 virtual void derefEventTarget() { deref(); } 126 127 virtual const KURL& virtualURL() const; 128 virtual KURL virtualCompleteURL(const String&) const; 129 130 KURL m_url; 131 String m_userAgent; 132 133 mutable RefPtr<WorkerLocation> m_location; 134 mutable RefPtr<WorkerNavigator> m_navigator; 135 136 OwnPtr<WorkerScriptController> m_script; 137 WorkerThread* m_thread; 138 139 RefPtr<EventListener> m_onerrorListener; 140 EventListenersMap m_eventListeners; 141 142 bool m_closing; 143 }; 144 145 } // namespace WebCore 146 147 #endif // ENABLE(WORKERS) 148 149 #endif // WorkerContext_h 150