ServiceWorker: Introduce ExtendableMessageEvent to replace MessageEvent

Source/modules/serviceworkers/ExtendableMessageEvent.cpp

+// 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/ExtendableMessageEvent.h"
+
+#include "modules/serviceworkers/WaitUntilObserver.h"
+
+namespace blink {
+
+ExtendableMessageEvent::ExtendableMessageEvent()
+{
+}
+
+ExtendableMessageEvent::ExtendableMessageEvent(const AtomicString& type, const ExtendableMessageEventInit& initializer)
+    : ExtendableEvent(type, initializer)
+{
+    if (initializer.hasData())
+        m_data = initializer.data();
+    if (initializer.hasOrigin())
+        m_origin = initializer.origin();
+    if (initializer.hasLastEventId())
+        m_lastEventId = initializer.lastEventId();
+    if (initializer.hasSource()) {
+        if (initializer.source().isClient())
+            m_sourceAsClient = initializer.source().getAsClient();
+        else 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()));
+}
+
+ExtendableMessageEvent::ExtendableMessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, ServiceWorkerClient* source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports, WaitUntilObserver* observer)
+    : m_serializedData(data)
+    , m_origin(origin)
+    , m_lastEventId(lastEventId)
+    , m_sourceAsClient(source)
+    , m_ports(ports)
+{
+    m_observer = observer;
+    setType(EventTypeNames::message);
+    if (m_serializedData)
+        m_serializedData->registerMemoryAllocatedWithCurrentScriptContext();
+}
+
+ExtendableMessageEvent::ExtendableMessageEvent(PassRefPtr<SerializedScriptValue> data, const String& origin, const String& lastEventId, PassRefPtrWillBeRawPtr<ServiceWorker> source, PassOwnPtrWillBeRawPtr<MessagePortArray> ports, WaitUntilObserver* observer)
+    : m_serializedData(data)
+    , m_origin(origin)
+    , m_lastEventId(lastEventId)
+    , m_sourceAsServiceWorker(source)
+    , m_ports(ports)
+{
+    m_observer = observer;
+    setType(EventTypeNames::message);
+    if (m_serializedData)
+        m_serializedData->registerMemoryAllocatedWithCurrentScriptContext();
+}
+
+ExtendableMessageEvent::~ExtendableMessageEvent()
+{
+}
+
+MessagePortArray ExtendableMessageEvent::ports(bool& isNull) const
+{
+    if (m_ports) {
+        isNull = false;
+        return *m_ports;
+    }
+    isNull = true;
+    return MessagePortArray();
+}
+
+MessagePortArray ExtendableMessageEvent::ports() const
+{
+    bool unused;
+    return ports(unused);
+}
+
+void ExtendableMessageEvent::source(ClientOrServiceWorkerOrMessagePort& result) const
+{
+    if (m_sourceAsClient)
+        result = ClientOrServiceWorkerOrMessagePort::fromClient(m_sourceAsClient);
+    else if (m_sourceAsServiceWorker)
+        result = ClientOrServiceWorkerOrMessagePort::fromServiceWorker(m_sourceAsServiceWorker);
+    else if (m_sourceAsMessagePort)
+        result = ClientOrServiceWorkerOrMessagePort::fromMessagePort(m_sourceAsMessagePort);
+}
+
+const AtomicString& ExtendableMessageEvent::interfaceName() const
+{
+    return EventNames::ExtendableMessageEvent;
+}
+
+DEFINE_TRACE(ExtendableMessageEvent)
+{
+    visitor->trace(m_sourceAsClient);
+    visitor->trace(m_sourceAsServiceWorker);
+    visitor->trace(m_sourceAsMessagePort);
+#if ENABLE(OILPAN)
+    visitor->trace(m_ports);
+#endif
+    Event::trace(visitor);
+}
+
+} // namespace blink