Implement ServiceWorker::postMessage() [Blink]

Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index 80307f05cd84d2b0a73d0826f7182c8fe0e5f898..15c31d0cc9f2717b8ed287e7eed6705cb4b73af3 100644
--- a/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -32,9 +32,12 @@
 #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"
@@ -74,6 +77,22 @@ void ServiceWorkerGlobalScopeProxy::dispatchFetchEvent(int eventID)
     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);