1 files changed, 60 insertions, 0 deletions
diff --git a/Source/WebCore/page/UserMessageHandler.cpp b/Source/WebCore/page/UserMessageHandler.cpp
new file mode 100644
index 000000000..0ff70e266
--- /dev/null
+++ b/Source/WebCore/page/UserMessageHandler.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2014 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "UserMessageHandler.h"
+
+#if ENABLE(USER_MESSAGE_HANDLERS)
+
+#include "ExceptionCode.h"
+#include "Frame.h"
+#include "SerializedScriptValue.h"
+
+namespace WebCore {
+
+UserMessageHandler::UserMessageHandler(Frame& frame, UserMessageHandlerDescriptor& descriptor)
+    : FrameDestructionObserver(&frame)
+    , m_descriptor(&descriptor)
+{
+}
+
+UserMessageHandler::~UserMessageHandler()
+{
+}
+
+ExceptionOr<void> UserMessageHandler::postMessage(RefPtr<SerializedScriptValue>&& value)
+{
+    // Check to see if the descriptor has been removed. This can happen if the host application has
+    // removed the named message handler at the WebKit2 API level.
+    if (!m_descriptor)
+        return Exception { INVALID_ACCESS_ERR };
+
+    m_descriptor->didPostMessage(*this, value.get());
+    return { };
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(USER_MESSAGE_HANDLERS)