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