code.vuplus.com Git - vuplus_webkit/blob - Source/WebKit/chromium/src/WebSharedWorkerImpl.cpp

   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 #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 "WorkerInspectorController.h"
  43 #include "WorkerScriptDebugServer.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 {
  58 }
  59
  60 WebSharedWorkerImpl::~WebSharedWorkerImpl()
  61 {
  62 }
  63
  64 bool WebSharedWorkerImpl::isStarted()
  65 {
  66     // Should not ever be called from the worker thread (this API is only called on WebSharedWorkerProxy on the renderer thread).
  67     ASSERT_NOT_REACHED();
  68     return workerThread();
  69 }
  70
  71 void WebSharedWorkerImpl::connect(WebMessagePortChannel* webChannel, ConnectListener* listener)
  72 {
  73     // Convert the WebMessagePortChanel to a WebCore::MessagePortChannel.
  74     RefPtr<PlatformMessagePortChannel> platform_channel =
  75         PlatformMessagePortChannel::create(webChannel);
  76     webChannel->setClient(platform_channel.get());
  77     OwnPtr<MessagePortChannel> channel =
  78         MessagePortChannel::create(platform_channel);
  79
  80     workerThread()->runLoop().postTask(
  81         createCallbackTask(&connectTask, channel.release()));
  82     if (listener)
  83         listener->connected();
  84 }
  85
  86 void WebSharedWorkerImpl::connectTask(ScriptExecutionContext* context, PassOwnPtr<MessagePortChannel> channel)
  87 {
  88     // Wrap the passed-in channel in a MessagePort, and send it off via a connect event.
  89     RefPtr<MessagePort> port = MessagePort::create(*context);
  90     port->entangle(channel);
  91     ASSERT(context->isWorkerContext());
  92     WorkerContext* workerContext = static_cast<WorkerContext*>(context);
  93     ASSERT(workerContext->isSharedWorkerContext());
  94     workerContext->toSharedWorkerContext()->dispatchEvent(createConnectEvent(port));
  95 }
  96
  97 void WebSharedWorkerImpl::startWorkerContext(const WebURL& url, const WebString& name, const WebString& userAgent, const WebString& sourceCode, long long)
  98 {
  99     initializeLoader(url);
 100     setWorkerThread(SharedWorkerThread::create(name, url, userAgent, sourceCode, *this, *this));
 101     workerThread()->start();
 102 }
 103
 104 void WebSharedWorkerImpl::terminateWorkerContext()
 105 {
 106     stopWorkerThread();
 107 }
 108
 109 void WebSharedWorkerImpl::clientDestroyed()
 110 {
 111     m_client = 0;
 112 }
 113
 114 static void connectToWorkerContextInspectorTask(ScriptExecutionContext* context, bool)
 115 {
 116     ASSERT(context->isWorkerContext());
 117     static_cast<WorkerContext*>(context)->workerInspectorController()->connectFrontend();
 118 }
 119
 120 void WebSharedWorkerImpl::attachDevTools()
 121 {
 122     workerThread()->runLoop().postTask(createCallbackTask(connectToWorkerContextInspectorTask, true));
 123 }
 124
 125 static void disconnectFromWorkerContextInspectorTask(ScriptExecutionContext* context, bool)
 126 {
 127     ASSERT(context->isWorkerContext());
 128     static_cast<WorkerContext*>(context)->workerInspectorController()->disconnectFrontend();
 129 }
 130
 131 void WebSharedWorkerImpl::detachDevTools()
 132 {
 133     workerThread()->runLoop().postTaskForMode(createCallbackTask(disconnectFromWorkerContextInspectorTask, true), WorkerScriptDebugServer::debuggerTaskMode);
 134 }
 135
 136 static void dispatchOnInspectorBackendTask(ScriptExecutionContext* context, const String& message)
 137 {
 138     ASSERT(context->isWorkerContext());
 139     static_cast<WorkerContext*>(context)->workerInspectorController()->dispatchMessageFromFrontend(message);
 140 }
 141
 142 void WebSharedWorkerImpl::dispatchDevToolsMessage(const WebString& message)
 143 {
 144     workerThread()->runLoop().postTaskForMode(createCallbackTask(dispatchOnInspectorBackendTask, String(message)), WorkerScriptDebugServer::debuggerTaskMode);
 145 }
 146
 147 WebWorkerClient* WebSharedWorkerImpl::client()
 148 {
 149     // We should never be asked for a WebWorkerClient (only dedicated workers have an associated WebWorkerClient).
 150     // It should not be possible for SharedWorkerContext to generate an API call outside those supported by WebCommonWorkerClient.
 151     ASSERT_NOT_REACHED();
 152     return 0;
 153 }
 154
 155 WebSharedWorker* WebSharedWorker::create(WebCommonWorkerClient* client)
 156 {
 157     return new WebSharedWorkerImpl(client);
 158 }
 159
 160 #endif // ENABLE(SHARED_WORKERS)
 161
 162 } // namespace WebKit