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// Copyright (c) 2009 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 CHROME_PLUGIN_PLUGIN_CHANNEL_H_
#define CHROME_PLUGIN_PLUGIN_CHANNEL_H_
#include <vector>
#include "base/ref_counted.h"
#include "base/scoped_handle.h"
#include "build/build_config.h"
#include "chrome/plugin/plugin_channel_base.h"
#include "chrome/plugin/webplugin_delegate_stub.h"
namespace base {
class WaitableEvent;
}
// Encapsulates an IPC channel between the plugin process and one renderer
// process. On the renderer side there's a corresponding PluginChannelHost.
class PluginChannel : public PluginChannelBase {
public:
// Get a new PluginChannel object for the current process to talk to the
// given renderer process. The renderer ID is an opaque unique ID generated
// by the browser.
//
// POSIX only: If |channel_fd| > 0, use that file descriptor for the
// channel socket.
static PluginChannel* GetPluginChannel(int renderer_id,
MessageLoop* ipc_message_loop);
~PluginChannel();
virtual bool Send(IPC::Message* msg);
virtual void OnMessageReceived(const IPC::Message& message);
base::ProcessHandle renderer_handle() const { return renderer_handle_; }
int renderer_id() { return renderer_id_; }
int GenerateRouteID();
// Returns the event that's set when a call to the renderer causes a modal
// dialog to come up.
base::WaitableEvent* GetModalDialogEvent(gfx::NativeViewId containing_window);
#if defined(OS_POSIX)
// When first created, the PluginChannel gets assigned the file descriptor
// for the renderer.
// After the first time we pass it through the IPC, we don't need it anymore,
// and we close it. At that time, we reset renderer_fd_ to -1.
int DisownRendererFd() {
int value = renderer_fd_;
renderer_fd_ = -1;
return value;
}
#endif
bool in_send() { return in_send_ != 0; }
bool off_the_record() { return off_the_record_; }
void set_off_the_record(bool value) { off_the_record_ = value; }
protected:
// IPC::Channel::Listener implementation:
virtual void OnChannelConnected(int32 peer_pid);
virtual void OnChannelError();
virtual void CleanUp();
// Overrides PluginChannelBase::Init.
virtual bool Init(MessageLoop* ipc_message_loop, bool create_pipe_now);
private:
class MessageFilter;
// Called on the plugin thread
PluginChannel();
void OnControlMessageReceived(const IPC::Message& msg);
static PluginChannelBase* ClassFactory() { return new PluginChannel(); }
void OnCreateInstance(const std::string& mime_type, int* instance_id);
void OnDestroyInstance(int instance_id, IPC::Message* reply_msg);
void OnGenerateRouteID(int* route_id);
std::vector<scoped_refptr<WebPluginDelegateStub> > plugin_stubs_;
// Handle to the renderer process who is on the other side of the channel.
base::ProcessHandle renderer_handle_;
// The id of the renderer who is on the other side of the channel.
int renderer_id_;
#if defined(OS_POSIX)
// FD for the renderer end of the pipe. It is stored until we send it over
// IPC after which it is cleared. It will be closed by the IPC mechanism.
int renderer_fd_;
#endif
int in_send_; // Tracks if we're in a Send call.
bool log_messages_; // True if we should log sent and received messages.
bool off_the_record_; // True if the renderer is in off the record mode.
scoped_refptr<MessageFilter> filter_; // Handles the modal dialog events.
DISALLOW_EVIL_CONSTRUCTORS(PluginChannel);
};
#endif // CHROME_PLUGIN_PLUGIN_CHANNEL_H_
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