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 "ContentSecurityPolicy.h" 33#include "EventListener.h" 34#include "EventNames.h" 35#include "EventTarget.h" 36#include "GroupSettings.h" 37#include "ScriptExecutionContext.h" 38#include "WorkerEventQueue.h" 39#include "WorkerScriptController.h" 40#include <wtf/Assertions.h> 41#include <wtf/HashMap.h> 42#include <wtf/OwnPtr.h> 43#include <wtf/PassRefPtr.h> 44#include <wtf/RefCounted.h> 45#include <wtf/RefPtr.h> 46#include <wtf/text/AtomicStringHash.h> 47 48namespace WebCore { 49 50 class Blob; 51 class DOMURL; 52 class ScheduledAction; 53 class WorkerInspectorController; 54 class WorkerLocation; 55 class WorkerNavigator; 56 class WorkerThread; 57 58 class WorkerContext : public RefCounted<WorkerContext>, public ScriptExecutionContext, public EventTarget { 59 public: 60 virtual ~WorkerContext(); 61 62 virtual bool isWorkerContext() const OVERRIDE { return true; } 63 64 virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE; 65 66 virtual bool isSharedWorkerContext() const { return false; } 67 virtual bool isDedicatedWorkerContext() const { return false; } 68 69 const KURL& url() const { return m_url; } 70 KURL completeURL(const String&) const; 71 72 const GroupSettings* groupSettings() { return m_groupSettings.get(); } 73 virtual String userAgent(const KURL&) const; 74 75 virtual void disableEval(const String& errorMessage) OVERRIDE; 76 77 WorkerScriptController* script() { return m_script.get(); } 78 void clearScript() { m_script.clear(); } 79#if ENABLE(INSPECTOR) 80 void clearInspector(); 81#endif 82 83 WorkerThread* thread() const { return m_thread; } 84 85 bool hasPendingActivity() const; 86 87 virtual void postTask(PassOwnPtr<Task>) OVERRIDE; // Executes the task on context's thread asynchronously. 88 89 // WorkerGlobalScope 90 WorkerContext* self() { return this; } 91 WorkerLocation* location() const; 92 void close(); 93 94 DEFINE_ATTRIBUTE_EVENT_LISTENER(error); 95 96 // WorkerUtils 97 virtual void importScripts(const Vector<String>& urls, ExceptionCode&); 98 WorkerNavigator* navigator() const; 99 100 // Timers 101 int setTimeout(PassOwnPtr<ScheduledAction>, int timeout); 102 void clearTimeout(int timeoutId); 103 int setInterval(PassOwnPtr<ScheduledAction>, int timeout); 104 void clearInterval(int timeoutId); 105 106 // ScriptExecutionContext 107 virtual WorkerEventQueue* eventQueue() const OVERRIDE; 108 109 virtual bool isContextThread() const OVERRIDE; 110 virtual bool isJSExecutionForbidden() const OVERRIDE; 111 112#if ENABLE(INSPECTOR) 113 WorkerInspectorController* workerInspectorController() { return m_workerInspectorController.get(); } 114#endif 115 // These methods are used for GC marking. See JSWorkerContext::visitChildrenVirtual(SlotVisitor&) in 116 // JSWorkerContextCustom.cpp. 117 WorkerNavigator* optionalNavigator() const { return m_navigator.get(); } 118 WorkerLocation* optionalLocation() const { return m_location.get(); } 119 120 using RefCounted<WorkerContext>::ref; 121 using RefCounted<WorkerContext>::deref; 122 123 bool isClosing() { return m_closing; } 124 125 // An observer interface to be notified when the worker thread is getting stopped. 126 class Observer { 127 WTF_MAKE_NONCOPYABLE(Observer); 128 public: 129 Observer(WorkerContext*); 130 virtual ~Observer(); 131 virtual void notifyStop() = 0; 132 void stopObserving(); 133 private: 134 WorkerContext* m_context; 135 }; 136 friend class Observer; 137 void registerObserver(Observer*); 138 void unregisterObserver(Observer*); 139 void notifyObserversOfStop(); 140 141 virtual SecurityOrigin* topOrigin() const OVERRIDE { return m_topOrigin.get(); } 142 143 protected: 144 WorkerContext(const KURL&, const String& userAgent, PassOwnPtr<GroupSettings>, WorkerThread*, PassRefPtr<SecurityOrigin> topOrigin); 145 void applyContentSecurityPolicyFromString(const String& contentSecurityPolicy, ContentSecurityPolicy::HeaderType); 146 147 virtual void logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtr<ScriptCallStack>) OVERRIDE; 148 void addMessageToWorkerConsole(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, PassRefPtr<ScriptCallStack>, ScriptState* = 0, unsigned long requestIdentifier = 0); 149 150 private: 151 virtual void refScriptExecutionContext() OVERRIDE { ref(); } 152 virtual void derefScriptExecutionContext() OVERRIDE { deref(); } 153 154 virtual void refEventTarget() OVERRIDE { ref(); } 155 virtual void derefEventTarget() OVERRIDE { deref(); } 156 virtual EventTargetData* eventTargetData() OVERRIDE; 157 virtual EventTargetData* ensureEventTargetData() OVERRIDE; 158 159 virtual const KURL& virtualURL() const OVERRIDE; 160 virtual KURL virtualCompleteURL(const String&) const; 161 162 virtual void addMessage(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, unsigned columnNumber, PassRefPtr<ScriptCallStack>, ScriptState* = 0, unsigned long requestIdentifier = 0) OVERRIDE; 163 virtual void addConsoleMessage(MessageSource, MessageLevel, const String& message, unsigned long requestIdentifier = 0) OVERRIDE; 164 165 virtual EventTarget* errorEventTarget() OVERRIDE; 166 167 KURL m_url; 168 String m_userAgent; 169 OwnPtr<GroupSettings> m_groupSettings; 170 171 mutable RefPtr<WorkerLocation> m_location; 172 mutable RefPtr<WorkerNavigator> m_navigator; 173 174 OwnPtr<WorkerScriptController> m_script; 175 WorkerThread* m_thread; 176 177#if ENABLE(BLOB) 178 mutable RefPtr<DOMURL> m_domURL; 179#endif 180#if ENABLE(INSPECTOR) 181 OwnPtr<WorkerInspectorController> m_workerInspectorController; 182#endif 183 bool m_closing; 184 EventTargetData m_eventTargetData; 185 186 HashSet<Observer*> m_workerObservers; 187 188 OwnPtr<WorkerEventQueue> m_eventQueue; 189 190 RefPtr<SecurityOrigin> m_topOrigin; 191 }; 192 193} // namespace WebCore 194 195#endif // ENABLE(WORKERS) 196 197#endif // WorkerContext_h 198