1 files changed, 77 insertions, 0 deletions
diff --git a/WebCore/bindings/v8/custom/V8MessageChannelConstructor.cpp b/WebCore/bindings/v8/custom/V8MessageChannelConstructor.cpp
new file mode 100644
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--- /dev/null
+++ b/WebCore/bindings/v8/custom/V8MessageChannelConstructor.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2009 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * 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 "MessageChannel.h"
+
+#include "Document.h"
+#include "Frame.h"
+
+#include "V8Binding.h"
+#include "V8Proxy.h"
+
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+CALLBACK_FUNC_DECL(MessageChannelConstructor)
+{
+    INC_STATS("DOM.MessageChannel.Constructor");
+    // FIXME: The logic here is almost exact duplicate of V8::ConstructDOMObject.
+    // Consider refactoring to reduce duplication.
+    if (!args.IsConstructCall())
+        return throwError("DOM object constructor cannot be called as a function.");
+
+    // Get the document.
+    Frame* frame = V8Proxy::retrieveFrame();
+    if (!frame)
+        return v8::Undefined();
+
+    Document* document = frame->document();
+
+    // Note: it's OK to let this RefPtr go out of scope because we also call
+    // SetDOMWrapper(), which effectively holds a reference to obj.
+    RefPtr<MessageChannel> obj = MessageChannel::create(document);
+
+    v8::Local<v8::Object> messageChannel = args.Holder();
+
+    // Create references from the MessageChannel wrapper to the two
+    // MessagePort wrappers to make sure that the MessagePort wrappers
+    // stay alive as long as the MessageChannel wrapper is around.
+    messageChannel->SetInternalField(kMessageChannelPort1Index, V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, obj->port1()));
+    messageChannel->SetInternalField(kMessageChannelPort2Index, V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, obj->port2()));
+
+    // Setup the standard wrapper object internal fields.
+    V8Proxy::SetDOMWrapper(messageChannel, V8ClassIndex::MESSAGECHANNEL, obj.get());
+    return toV8(obj.release(), messageChannel);
+}
+
+
+} // namespace WebCore