Implement ServiceWorker::postMessage() [Blink]

Source/web/ServiceWorkerGlobalScopeProxy.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "ServiceWorkerGlobalScopeProxy.h"
 
 #include "WebEmbeddedWorkerImpl.h"
+#include "WebSerializedScriptValue.h"
 #include "WebServiceWorkerContextClient.h"
 #include "bindings/v8/WorkerScriptController.h"
 #include "core/dom/ExecutionContext.h"
+#include "core/dom/MessagePort.h"
+#include "core/events/MessageEvent.h"
 #include "core/events/ThreadLocalEventNames.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "modules/serviceworkers/FetchEvent.h"
 #include "modules/serviceworkers/InstallEvent.h"
 #include "modules/serviceworkers/WaitUntilObserver.h"
 #include "platform/NotImplemented.h"
 #include "wtf/Functional.h"
 #include "wtf/PassOwnPtr.h"
 
 using namespace WebCore;
@@ skipping 19 matching lines @@
 }
 
 void ServiceWorkerGlobalScopeProxy::dispatchFetchEvent(int eventID)
 {
     ASSERT(m_workerGlobalScope);
     RefPtr<RespondWithObserver> observer = RespondWithObserver::create(m_workerGlobalScope, eventID);
     m_workerGlobalScope->dispatchEvent(FetchEvent::create(observer));
     observer->didDispatchEvent();
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchMessageEvent(const WebString& message, const WebMessagePortChannelArray& webChannels)
+{
+    ASSERT(m_workerGlobalScope);
+
+    OwnPtr<MessagePortArray> ports;
+    if (!webChannels.isEmpty()) {
+        OwnPtr<MessagePortChannelArray> channels = adoptPtr(new MessagePortChannelArray(webChannels.size()));
+        for (size_t i = 0; i < webChannels.size(); ++i)

[adamk, 2014/03/19 17:48:58]

This loop, too, it would be nice to share, again since the adoptPtr() inside is
important to get right (though it scares me less than the leakPtr).

[jsbell, 2014/03/19 21:06:47]

And ditto for this one.

+            (*channels)[i] = adoptPtr(webChannels[i]);
+        ports = MessagePort::entanglePorts(*m_workerGlobalScope, channels.release());
+    }
+
+    WebSerializedScriptValue value = WebSerializedScriptValue::fromString(message);
+    m_workerGlobalScope->dispatchEvent(MessageEvent::create(ports.release(), value));
+}
+
 void ServiceWorkerGlobalScopeProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
 {
     m_client.reportException(errorMessage, lineNumber, columnNumber, sourceURL);
 }
 
 void ServiceWorkerGlobalScopeProxy::reportConsoleMessage(MessageSource, MessageLevel, const String& message, int lineNumber, const String& sourceURL)
 {
     notImplemented();
 }
 
@@ skipping 27 matching lines @@
 
 ServiceWorkerGlobalScopeProxy::ServiceWorkerGlobalScopeProxy(WebEmbeddedWorkerImpl& embeddedWorker, ExecutionContext& executionContext, WebServiceWorkerContextClient& client)
     : m_embeddedWorker(embeddedWorker)
     , m_executionContext(executionContext)
     , m_client(client)
     , m_workerGlobalScope(0)
 {
 }
 
 } // namespace blink