Source/WebKit/chromium/src/WebSharedWorkerImpl.cpp

   1 /*
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   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.
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  30
  31 #include "config.h"
  32 #include "WebSharedWorkerImpl.h"
  33
  34 #include "CrossThreadTask.h"
  35 #include "KURL.h"
  36 #include "MessageEvent.h"
  37 #include "MessagePortChannel.h"
  38 #include "PlatformMessagePortChannel.h"
  39 #include "ScriptExecutionContext.h"
  40 #include "SharedWorkerContext.h"
  41 #include "SharedWorkerThread.h"
  42 #include "WorkerDebuggerAgent.h"
  43 #include "WorkerInspectorController.h"
  44
  45 #include "WebMessagePortChannel.h"
  46 #include "WebString.h"
  47 #include "WebURL.h"
  48
  49 using namespace WebCore;
  50
  51 namespace WebKit {
  52
  53 #if ENABLE(SHARED_WORKERS)
  54
  55 WebSharedWorkerImpl::WebSharedWorkerImpl(WebCommonWorkerClient* client)
  56     : m_client(client)
  57     , m_pauseWorkerContextOnStart(false)
  58 {
  59 }
  60
  61 WebSharedWorkerImpl::~WebSharedWorkerImpl()
  62 {
  63 }
  64
  65 bool WebSharedWorkerImpl::isStarted()
  66 {
  67     // Should not ever be called from the worker thread (this API is only called on WebSharedWorkerProxy on the renderer thread).
  68     ASSERT_NOT_REACHED();
  69     return workerThread();
  70 }
  71
  72 void WebSharedWorkerImpl::connect(WebMessagePortChannel* webChannel, ConnectListener* listener)
  73 {
  74     // Convert the WebMessagePortChanel to a WebCore::MessagePortChannel.
  75     RefPtr<PlatformMessagePortChannel> platform_channel =
  76         PlatformMessagePortChannel::create(webChannel);
  77     webChannel->setClient(platform_channel.get());
  78     OwnPtr<MessagePortChannel> channel =
  79         MessagePortChannel::create(platform_channel);
  80
  81     workerThread()->runLoop().postTask(
  82         createCallbackTask(&connectTask, channel.release()));
  83     if (listener)
  84         listener->connected();
  85 }
  86
  87 void WebSharedWorkerImpl::connectTask(ScriptExecutionContext* context, PassOwnPtr<MessagePortChannel> channel)
  88 {
  89     // Wrap the passed-in channel in a MessagePort, and send it off via a connect event.
  90     RefPtr<MessagePort> port = MessagePort::create(*context);
  91     port->entangle(channel);
  92     ASSERT(context->isWorkerContext());
  93     WorkerContext* workerContext = static_cast<WorkerContext*>(context);
  94     ASSERT(workerContext->isSharedWorkerContext());
  95     workerContext->dispatchEvent(createConnectEvent(port));
  96 }
  97
  98 void WebSharedWorkerImpl::startWorkerContext(const WebURL& url, const WebString& name, const WebString& userAgent, const WebString& sourceCode, long long)
  99 {
 100     initializeLoader(url);
 101     WorkerThreadStartMode startMode = m_pauseWorkerContextOnStart ? PauseWorkerContextOnStart : DontPauseWorkerContextOnStart;
 102     setWorkerThread(SharedWorkerThread::create(name, url, userAgent, sourceCode, *this, *this, startMode));
 103     workerThread()->start();
 104 }
 105
 106 void WebSharedWorkerImpl::terminateWorkerContext()
 107 {
 108     stopWorkerThread();
 109 }
 110
 111 void WebSharedWorkerImpl::clientDestroyed()
 112 {
 113     m_client = 0;
 114 }
 115
 116 void WebSharedWorkerImpl::pauseWorkerContextOnStart()
 117 {
 118     m_pauseWorkerContextOnStart = true;
 119 }
 120
 121 static void resumeWorkerContextTask(ScriptExecutionContext* context, bool)
 122 {
 123     ASSERT(context->isWorkerContext());
 124     static_cast<WorkerContext*>(context)->workerInspectorController()->resume();
 125 }
 126
 127 void WebSharedWorkerImpl::resumeWorkerContext()
 128 {
 129     m_pauseWorkerContextOnStart = false;
 130     if (workerThread())
 131         workerThread()->runLoop().postTaskForMode(createCallbackTask(resumeWorkerContextTask, true), WorkerDebuggerAgent::debuggerTaskMode);
 132 }
 133
 134 static void connectToWorkerContextInspectorTask(ScriptExecutionContext* context, bool)
 135 {
 136     ASSERT(context->isWorkerContext());
 137     static_cast<WorkerContext*>(context)->workerInspectorController()->connectFrontend();
 138 }
 139
 140 void WebSharedWorkerImpl::attachDevTools()
 141 {
 142     workerThread()->runLoop().postTaskForMode(createCallbackTask(connectToWorkerContextInspectorTask, true), WorkerDebuggerAgent::debuggerTaskMode);
 143 }
 144
 145 static void reconnectToWorkerContextInspectorTask(ScriptExecutionContext* context, const String& savedState)
 146 {
 147     ASSERT(context->isWorkerContext());
 148     WorkerInspectorController* ic = static_cast<WorkerContext*>(context)->workerInspectorController();
 149     ic->restoreInspectorStateFromCookie(savedState);
 150     ic->resume();
 151 }
 152
 153 void WebSharedWorkerImpl::reattachDevTools(const WebString& savedState)
 154 {
 155     workerThread()->runLoop().postTaskForMode(createCallbackTask(reconnectToWorkerContextInspectorTask, String(savedState)), WorkerDebuggerAgent::debuggerTaskMode);
 156 }
 157
 158 static void disconnectFromWorkerContextInspectorTask(ScriptExecutionContext* context, bool)
 159 {
 160     ASSERT(context->isWorkerContext());
 161     static_cast<WorkerContext*>(context)->workerInspectorController()->disconnectFrontend();
 162 }
 163
 164 void WebSharedWorkerImpl::detachDevTools()
 165 {
 166     workerThread()->runLoop().postTaskForMode(createCallbackTask(disconnectFromWorkerContextInspectorTask, true), WorkerDebuggerAgent::debuggerTaskMode);
 167 }
 168
 169 static void dispatchOnInspectorBackendTask(ScriptExecutionContext* context, const String& message)
 170 {
 171     ASSERT(context->isWorkerContext());
 172     static_cast<WorkerContext*>(context)->workerInspectorController()->dispatchMessageFromFrontend(message);
 173 }
 174
 175 void WebSharedWorkerImpl::dispatchDevToolsMessage(const WebString& message)
 176 {
 177     workerThread()->runLoop().postTaskForMode(createCallbackTask(dispatchOnInspectorBackendTask, String(message)), WorkerDebuggerAgent::debuggerTaskMode);
 178 }
 179
 180 WebWorkerClient* WebSharedWorkerImpl::client()
 181 {
 182     // We should never be asked for a WebWorkerClient (only dedicated workers have an associated WebWorkerClient).
 183     // It should not be possible for SharedWorkerContext to generate an API call outside those supported by WebCommonWorkerClient.
 184     ASSERT_NOT_REACHED();
 185     return 0;
 186 }
 187
 188 WebSharedWorker* WebSharedWorker::create(WebCommonWorkerClient* client)
 189 {
 190     return new WebSharedWorkerImpl(client);
 191 }
 192
 193 #endif // ENABLE(SHARED_WORKERS)
 194
 195 } // namespace WebKit