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// Copyright (c) 2012 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.
#ifndef CONTENT_RENDERER_DEVTOOLS_AGENT_FILTER_H_
#define CONTENT_RENDERER_DEVTOOLS_AGENT_FILTER_H_
#include <string>
#include "ipc/ipc_channel_proxy.h"
class MessageLoop;
struct DevToolsMessageData;
namespace content {
// DevToolsAgentFilter is registered as an IPC filter in order to be able to
// dispatch messages while on the IO thread. The reason for that is that while
// debugging, Render thread is being held by the v8 and hence no messages
// are being dispatched there. While holding the thread in a tight loop,
// v8 provides thread-safe Api for controlling debugger. In our case v8's Api
// is being used from this communication agent on the IO thread.
class DevToolsAgentFilter : public IPC::ChannelProxy::MessageFilter {
public:
// There is a single instance of this class instantiated by the RenderThread.
DevToolsAgentFilter();
static void SendRpcMessage(const DevToolsMessageData& data);
// IPC::ChannelProxy::MessageFilter override. Called on IO thread.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
protected:
virtual ~DevToolsAgentFilter();
private:
void OnDispatchOnInspectorBackend(const std::string& message);
bool message_handled_;
MessageLoop* render_thread_loop_;
int current_routing_id_;
DISALLOW_COPY_AND_ASSIGN(DevToolsAgentFilter);
};
} // namespace content
#endif // CONTENT_RENDERER_DEVTOOLS_AGENT_FILTER_H_
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