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// Copyright (c) 2011 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_PLUGIN_CHANNEL_HOST_H_
#define CONTENT_RENDERER_PLUGIN_CHANNEL_HOST_H_
#pragma once
#include "base/hash_tables.h"
#include "content/common/np_channel_base.h"
#include "ipc/ipc_channel_handle.h"
class IsListeningFilter;
class NPObjectBase;
// Encapsulates an IPC channel between the renderer and one plugin process.
// On the plugin side there's a corresponding PluginChannel.
class PluginChannelHost : public NPChannelBase {
public:
static PluginChannelHost* GetPluginChannelHost(
const IPC::ChannelHandle& channel_handle,
base::MessageLoopProxy* ipc_message_loop);
virtual bool Init(base::MessageLoopProxy* ipc_message_loop,
bool create_pipe_now,
base::WaitableEvent* shutdown_event) OVERRIDE;
virtual int GenerateRouteID() OVERRIDE;
void AddRoute(int route_id, IPC::Channel::Listener* listener,
NPObjectBase* npobject);
void RemoveRoute(int route_id);
// NPChannelBase override:
virtual bool Send(IPC::Message* msg) OVERRIDE;
// IPC::Channel::Listener override
virtual void OnChannelError() OVERRIDE;
static void SetListening(bool flag);
static bool IsListening();
static void Broadcast(IPC::Message* message) {
NPChannelBase::Broadcast(message);
}
bool expecting_shutdown() { return expecting_shutdown_; }
private:
// Called on the render thread
PluginChannelHost();
virtual ~PluginChannelHost();
static NPChannelBase* ClassFactory() { return new PluginChannelHost(); }
virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
void OnSetException(const std::string& message);
void OnPluginShuttingDown();
// Keep track of all the registered WebPluginDelegeProxies to
// inform about OnChannelError
typedef base::hash_map<int, IPC::Channel::Listener*> ProxyMap;
ProxyMap proxies_;
// An IPC MessageFilter that can be told to filter out all messages. This is
// used when the JS debugger is attached in order to avoid browser hangs.
scoped_refptr<IsListeningFilter> is_listening_filter_;
// True if we are expecting the plugin process to go away - in which case,
// don't treat it as a crash.
bool expecting_shutdown_;
DISALLOW_COPY_AND_ASSIGN(PluginChannelHost);
};
#endif // CONTENT_RENDERER_PLUGIN_CHANNEL_HOST_H_
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