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| 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 | |
| 33 #if ENABLE(SHARED_WORKERS) | |
| 34 | |
| 35 #include "SharedWorkerRepository.h" | |
| 36 | |
| 37 #include "Event.h" | |
| 38 #include "EventNames.h" | |
| 39 #include "MessagePortChannel.h" | |
| 40 #include "PlatformMessagePortChannel.h" | |
| 41 #include "ScriptExecutionContext.h" | |
| 42 #include "SharedWorker.h" | |
| 43 #include "WebFrameClient.h" | |
| 44 #include "WebFrameImpl.h" | |
| 45 #include "WebKit.h" | |
| 46 #include "WebKitClient.h" | |
| 47 #include "WebMessagePortChannel.h" | |
| 48 #include "WebSharedWorker.h" | |
| 49 #include "WebSharedWorkerRepository.h" | |
| 50 #include "WebString.h" | |
| 51 #include "WebURL.h" | |
| 52 #include "WorkerScriptLoader.h" | |
| 53 #include "WorkerScriptLoaderClient.h" | |
| 54 | |
| 55 namespace WebCore { | |
| 56 | |
| 57 class Document; | |
| 58 using WebKit::WebFrameImpl; | |
| 59 using WebKit::WebMessagePortChannel; | |
| 60 using WebKit::WebSharedWorker; | |
| 61 using WebKit::WebSharedWorkerRepository; | |
| 62 | |
| 63 // Callback class that keeps the SharedWorker and WebSharedWorker objects alive while loads are potentially happening, and also translates load errors into error events on the worker. | |
| 64 class SharedWorkerScriptLoader : private WorkerScriptLoaderClient, private WebSharedWorker::ConnectListener, private ActiveDOMObject { | |
| 65 public: | |
| 66 SharedWorkerScriptLoader(PassRefPtr<SharedWorker> worker, const KURL& url, const String& name, PassOwnPtr<MessagePortChannel> port, PassOwnPtr<WebSharedWorker> webWorker) | |
| 67 : ActiveDOMObject(worker->scriptExecutionContext(), this) | |
| 68 , m_worker(worker) | |
| 69 , m_url(url) | |
| 70 , m_name(name) | |
| 71 , m_webWorker(webWorker) | |
| 72 , m_port(port) | |
| 73 { | |
| 74 } | |
| 75 | |
| 76 void load(); | |
| 77 virtual void contextDestroyed(); | |
| 78 private: | |
| 79 // WorkerScriptLoaderClient callback | |
| 80 virtual void notifyFinished(); | |
| 81 | |
| 82 virtual void connected(); | |
| 83 | |
| 84 void sendConnect(); | |
| 85 | |
| 86 RefPtr<SharedWorker> m_worker; | |
| 87 KURL m_url; | |
| 88 String m_name; | |
| 89 OwnPtr<WebSharedWorker> m_webWorker; | |
| 90 OwnPtr<MessagePortChannel> m_port; | |
| 91 WorkerScriptLoader m_scriptLoader; | |
| 92 }; | |
| 93 | |
| 94 void SharedWorkerScriptLoader::load() | |
| 95 { | |
| 96 // If the shared worker is not yet running, load the script resource for it, otherwise just send it a connect event. | |
| 97 if (m_webWorker->isStarted()) | |
| 98 sendConnect(); | |
| 99 else | |
| 100 m_scriptLoader.loadAsynchronously(m_worker->scriptExecutionContext(), m_url, DenyCrossOriginRequests, this); | |
| 101 } | |
| 102 | |
| 103 // Extracts a WebMessagePortChannel from a MessagePortChannel. | |
| 104 static WebMessagePortChannel* getWebPort(PassOwnPtr<MessagePortChannel> port) | |
| 105 { | |
| 106 // Extract the WebMessagePortChannel to send to the worker. | |
| 107 PlatformMessagePortChannel* platformChannel = port->channel(); | |
| 108 WebMessagePortChannel* webPort = platformChannel->webChannelRelease(); | |
| 109 webPort->setClient(0); | |
| 110 return webPort; | |
| 111 } | |
| 112 | |
| 113 void SharedWorkerScriptLoader::notifyFinished() | |
| 114 { | |
| 115 if (m_scriptLoader.failed()) { | |
| 116 m_worker->dispatchEvent(Event::create(eventNames().errorEvent, false, true)); | |
| 117 delete this; | |
| 118 } else { | |
| 119 // Pass the script off to the worker, then send a connect event. | |
| 120 m_webWorker->startWorkerContext(m_url, m_name, m_worker->scriptExecutionContext()->userAgent(m_url), m_scriptLoader.script()); | |
| 121 sendConnect(); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 void SharedWorkerScriptLoader::sendConnect() | |
| 126 { | |
| 127 // Send the connect event off, and linger until it is done sending. | |
| 128 m_webWorker->connect(getWebPort(m_port.release()), this); | |
| 129 } | |
| 130 | |
| 131 void SharedWorkerScriptLoader::contextDestroyed() | |
| 132 { | |
| 133 ActiveDOMObject::contextDestroyed(); | |
| 134 delete this; | |
| 135 } | |
| 136 | |
| 137 void SharedWorkerScriptLoader::connected() | |
| 138 { | |
| 139 // Connect event has been sent, so free ourselves (this releases the SharedWorker so it can be freed as well if unreferenced). | |
| 140 delete this; | |
| 141 } | |
| 142 | |
| 143 bool SharedWorkerRepository::isAvailable() | |
| 144 { | |
| 145 // Allow the WebKitClient to determine if SharedWorkers are available. | |
| 146 return WebKit::webKitClient()->sharedWorkerRepository(); | |
| 147 } | |
| 148 | |
| 149 static WebSharedWorkerRepository::DocumentID getId(void* document) | |
| 150 { | |
| 151 ASSERT(document); | |
| 152 return reinterpret_cast<WebSharedWorkerRepository::DocumentID>(document); | |
| 153 } | |
| 154 | |
| 155 void SharedWorkerRepository::connect(PassRefPtr<SharedWorker> worker, PassOwnPtr<MessagePortChannel> port, const KURL& url, const String& name, ExceptionCode& ec) | |
| 156 { | |
| 157 // This should not be callable unless there's a SharedWorkerRepository for | |
| 158 // this context (since isAvailable() should have returned null). | |
| 159 ASSERT(WebKit::webKitClient()->sharedWorkerRepository()); | |
| 160 | |
| 161 // No nested workers (for now) - connect() should only be called from document context. | |
| 162 ASSERT(worker->scriptExecutionContext()->isDocument()); | |
| 163 Document* document = static_cast<Document*>(worker->scriptExecutionContext()); | |
| 164 WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame()); | |
| 165 OwnPtr<WebSharedWorker> webWorker; | |
| 166 webWorker = webFrame->client()->createSharedWorker(webFrame, url, name, getId(document)); | |
| 167 | |
| 168 if (!webWorker) { | |
| 169 // Existing worker does not match this url, so return an error back to the caller. | |
| 170 ec = URL_MISMATCH_ERR; | |
| 171 return; | |
| 172 } | |
| 173 | |
| 174 // The loader object manages its own lifecycle (and the lifecycles of the two worker objects). | |
| 175 // It will free itself once loading is completed. | |
| 176 SharedWorkerScriptLoader* loader = new SharedWorkerScriptLoader(worker, url, name, port.release(), webWorker.release()); | |
| 177 loader->load(); | |
| 178 } | |
| 179 | |
| 180 void SharedWorkerRepository::documentDetached(Document* document) | |
| 181 { | |
| 182 WebSharedWorkerRepository* repo = WebKit::webKitClient()->sharedWorkerRepository(); | |
| 183 if (repo) | |
| 184 repo->documentDetached(getId(document)); | |
| 185 } | |
| 186 | |
| 187 bool SharedWorkerRepository::hasSharedWorkers(Document* document) | |
| 188 { | |
| 189 WebSharedWorkerRepository* repo = WebKit::webKitClient()->sharedWorkerRepository(); | |
| 190 return repo && repo->hasSharedWorkers(getId(document)); | |
| 191 } | |
| 192 | |
| 193 | |
| 194 | |
| 195 } // namespace WebCore | |
| 196 | |
| 197 #endif // ENABLE(SHARED_WORKERS) | |
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Chromium Code Reviews
Issue 385057:
Deleted webkit/api which now lives in webkit.org (Closed)
