ServiceWorker: Introduce ServiceWorkerMessageEvent to replace MessageEvent (3/3).

Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp

Index: Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp b/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..322fcc852d1917be4155808f0603d3a8dd53676a
--- /dev/null
+++ b/Source/modules/serviceworkers/ServiceWorkerMessageEvent.cpp
@@ -0,0 +1,88 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "modules/serviceworkers/ServiceWorkerMessageEvent.h"
+
+namespace blink {
+
+ServiceWorkerMessageEvent::ServiceWorkerMessageEvent()
+{
+}
+
+ServiceWorkerMessageEvent::ServiceWorkerMessageEvent(const AtomicString& type, const ServiceWorkerMessageEventInit& initializer)
+    : Event(type, initializer)
+{
+    if (initializer.hasOrigin())
+        m_origin = initializer.origin();
+    if (initializer.hasLastEventId())
+        m_lastEventId = initializer.lastEventId();
+    if (initializer.hasSource()) {
+        if (initializer.source().isServiceWorker())
+            m_sourceAsServiceWorker = initializer.source().getAsServiceWorker();
+        else if (initializer.source().isMessagePort())
+            m_sourceAsMessagePort = initializer.source().getAsMessagePort();
+    }
+    if (initializer.hasPorts())
+        m_ports = adoptPtrWillBeNoop(new MessagePortArray(initializer.ports()));
+    if (initializer.hasData())
+        m_data = initializer.data();
+}
+
+ServiceWorkerMessageEvent::ServiceWorkerMessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<ServiceWorker> source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports)
+    : Event(EventTypeNames::message, false, false)
+    , m_serializedData(data)
+    , m_origin(origin)
+    , m_lastEventId(lastEventId)
+    , m_sourceAsServiceWorker(source)
+    , m_ports(ports)
+{
+    if (m_serializedData)
+        m_serializedData->registerMemoryAllocatedWithCurrentScriptContext();
+}
+
+ServiceWorkerMessageEvent::~ServiceWorkerMessageEvent()
+{
+}
+
+MessagePortArray ServiceWorkerMessageEvent::ports(bool& isNull) const
+{
+    if (m_ports) {
+        isNull = false;
+        return *m_ports;
+    }
+    isNull = true;
+    return MessagePortArray();
+}
+
+MessagePortArray ServiceWorkerMessageEvent::ports() const
+{
+    bool unused;
+    return ports(unused);
+}
+
+void ServiceWorkerMessageEvent::source(ServiceWorkerOrMessagePort& result) const
+{
+    if (m_sourceAsServiceWorker)
+        result = ServiceWorkerOrMessagePort::fromServiceWorker(m_sourceAsServiceWorker);
+    else if (m_sourceAsMessagePort)
+        result = ServiceWorkerOrMessagePort::fromMessagePort(m_sourceAsMessagePort);
+}
+
+const AtomicString& ServiceWorkerMessageEvent::interfaceName() const
+{
+    return EventNames::ServiceWorkerMessageEvent;
+}
+
+DEFINE_TRACE(ServiceWorkerMessageEvent)
+{
+    visitor->trace(m_sourceAsServiceWorker);
+    visitor->trace(m_sourceAsMessagePort);
+#if ENABLE(OILPAN)
+    visitor->trace(m_ports);
+#endif
+    Event::trace(visitor);
+}
+
+} // namespace blink