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 WebSharedWorkerImpl_h 32 #define WebSharedWorkerImpl_h 33 34 #include "public/web/WebSharedWorker.h" 35 36 #include "core/dom/ExecutionContext.h" 37 #include "core/workers/WorkerLoaderProxy.h" 38 #include "core/workers/WorkerReportingProxy.h" 39 #include "core/workers/WorkerScriptLoaderClient.h" 40 #include "core/workers/WorkerThread.h" 41 #include "public/web/WebContentSecurityPolicy.h" 42 #include "public/web/WebFrameClient.h" 43 #include "public/web/WebSharedWorkerClient.h" 44 #include "wtf/PassOwnPtr.h" 45 #include "wtf/RefPtr.h" 46 #include "wtf/WeakPtr.h" 47 48 namespace blink { 49 50 class ConsoleMessage; 51 class ResourceResponse; 52 class WebApplicationCacheHost; 53 class WebApplicationCacheHostClient; 54 class WebWorkerClient; 55 class WebSecurityOrigin; 56 class WebString; 57 class WebURL; 58 class WebView; 59 class WebWorker; 60 class WebSharedWorkerClient; 61 class WorkerInspectorProxy; 62 63 // This class is used by the worker process code to talk to the SharedWorker implementation. 64 // It can't use it directly since it uses WebKit types, so this class converts the data types. 65 // When the SharedWorker object wants to call WorkerReportingProxy, this class will 66 // convert to Chrome data types first and then call the supplied WebCommonWorkerClient. 67 class WebSharedWorkerImpl FINAL 68 : public WorkerReportingProxy 69 , public WorkerLoaderProxy 70 , public WebFrameClient 71 , public WebSharedWorker { 72 public: 73 explicit WebSharedWorkerImpl(WebSharedWorkerClient*); 74 75 // WorkerReportingProxy methods: 76 virtual void reportException( 77 const WTF::String&, int, int, const WTF::String&) OVERRIDE; 78 virtual void reportConsoleMessage(PassRefPtrWillBeRawPtr<ConsoleMessage>) OVERRIDE; 79 virtual void postMessageToPageInspector(const WTF::String&) OVERRIDE; 80 virtual void updateInspectorStateCookie(const WTF::String&) OVERRIDE; 81 virtual void workerGlobalScopeStarted(WorkerGlobalScope*) OVERRIDE; 82 virtual void workerGlobalScopeClosed() OVERRIDE; 83 virtual void workerThreadTerminated() OVERRIDE; 84 virtual void willDestroyWorkerGlobalScope() OVERRIDE { } 85 86 // WorkerLoaderProxy methods: 87 virtual void postTaskToLoader(PassOwnPtr<ExecutionContextTask>) OVERRIDE; 88 virtual bool postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask>) OVERRIDE; 89 90 // WebFrameClient methods to support resource loading thru the 'shadow page'. 91 virtual WebApplicationCacheHost* createApplicationCacheHost(WebLocalFrame*, WebApplicationCacheHostClient*) OVERRIDE; 92 virtual void didFinishDocumentLoad(WebLocalFrame*) OVERRIDE; 93 94 // WebSharedWorker methods: 95 virtual void startWorkerContext(const WebURL&, const WebString& name, const WebString& contentSecurityPolicy, WebContentSecurityPolicyType) OVERRIDE; 96 virtual void connect(WebMessagePortChannel*) OVERRIDE; 97 virtual void terminateWorkerContext() OVERRIDE; 98 virtual void clientDestroyed() OVERRIDE; 99 100 virtual void pauseWorkerContextOnStart() OVERRIDE; 101 virtual void resumeWorkerContext() OVERRIDE; 102 // FIXME: Remove this once chromium uses the one that receives hostId as a parameter. 103 virtual void attachDevTools() OVERRIDE; 104 virtual void attachDevTools(const WebString& hostId) OVERRIDE; 105 // FIXME: Remove this once chromium uses the one that receives hostId as a parameter. 106 virtual void reattachDevTools(const WebString& savedState) OVERRIDE; 107 virtual void reattachDevTools(const WebString& hostId, const WebString& savedState) OVERRIDE; 108 virtual void detachDevTools() OVERRIDE; 109 virtual void dispatchDevToolsMessage(const WebString&) OVERRIDE; 110 111 private: 112 class Loader; 113 114 virtual ~WebSharedWorkerImpl(); 115 116 WebSharedWorkerClient* client() { return m_client->get(); } 117 118 void setWorkerThread(PassRefPtr<WorkerThread> thread) { m_workerThread = thread; } 119 WorkerThread* workerThread() { return m_workerThread.get(); } 120 121 // Shuts down the worker thread. 122 void stopWorkerThread(); 123 124 // Creates the shadow loader used for worker network requests. 125 void initializeLoader(const WebURL&); 126 127 void didReceiveScriptLoaderResponse(); 128 void onScriptLoaderFinished(); 129 130 static void connectTask(ExecutionContext*, PassOwnPtr<WebMessagePortChannel>); 131 // Tasks that are run on the main thread. 132 void workerGlobalScopeClosedOnMainThread(); 133 void workerThreadTerminatedOnMainThread(); 134 135 void postMessageToPageInspectorOnMainThread(const String& message); 136 137 // 'shadow page' - created to proxy loading requests from the worker. 138 RefPtrWillBePersistent<ExecutionContext> m_loadingDocument; 139 WebView* m_webView; 140 WebFrame* m_mainFrame; 141 bool m_askedToTerminate; 142 143 OwnPtr<WorkerInspectorProxy> m_workerInspectorProxy; 144 145 RefPtr<WorkerThread> m_workerThread; 146 147 // This one's initialized and bound to the main thread. 148 RefPtr<WeakReference<WebSharedWorkerClient> > m_client; 149 150 // Usually WeakPtr is created by WeakPtrFactory exposed by Client 151 // class itself, but here it's implemented by Chrome so we create 152 // our own WeakPtr. 153 WeakPtr<WebSharedWorkerClient> m_clientWeakPtr; 154 155 bool m_pauseWorkerContextOnStart; 156 bool m_attachDevToolsOnStart; 157 158 // Kept around only while main script loading is ongoing. 159 OwnPtr<Loader> m_mainScriptLoader; 160 WebURL m_url; 161 WebString m_name; 162 WebString m_contentSecurityPolicy; 163 WebContentSecurityPolicyType m_policyType; 164 }; 165 166 } // namespace blink 167 168 #endif 169