chrome/browser/chrome_plugin_message_filter.h

// 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 CHROME_BROWSER_CHROME_PLUGIN_MESSAGE_FILTER_H_
#define CHROME_BROWSER_CHROME_PLUGIN_MESSAGE_FILTER_H_
#pragma once

#include "ipc/ipc_channel_proxy.h"
#include "ui/gfx/native_widget_types.h"

class PluginProcessHost;

namespace net {
class URLRequestContextGetter;
};

// This class filters out incoming Chrome-specific IPC messages for the plugin
// process on the IPC thread.
class ChromePluginMessageFilter : public IPC::ChannelProxy::MessageFilter,
                                  public IPC::Message::Sender {
 public:
  ChromePluginMessageFilter(PluginProcessHost* process);

  // BrowserMessageFilter methods:
  virtual bool OnMessageReceived(const IPC::Message& message);

  // IPC::Message::Sender methods:
  virtual bool Send(IPC::Message* message);

 private:
  virtual ~ChromePluginMessageFilter();

#if defined(OS_WIN) && !defined(USE_AURA)
  void OnDownloadUrl(const std::string& url,
                     gfx::NativeWindow caller_window,
                     int render_process_id);
  // Helper function to issue the download request on the file thread.
  static void OnDownloadUrlOnFileThread(
      const std::string& url,
      gfx::NativeWindow caller_window,
      net::URLRequestContextGetter* context);
  // Helper function to handle the initial portions of the download request
  // on the UI thread.
  static void OnDownloadUrlOnUIThread(const std::string& url,
                                      gfx::NativeWindow caller_window,
                                      int render_process_id);
#endif
  void OnGetPluginFinderUrl(std::string* plugin_finder_url);
  void OnMissingPluginStatus(int status,
                             int render_process_id,
                             int render_view_id,
                             gfx::NativeWindow window);

  // static
  static void HandleMissingPluginStatus(int status,
                                        int render_process_id,
                                        int render_view_id,
                                        gfx::NativeWindow window);

  PluginProcessHost* process_;

  DISALLOW_COPY_AND_ASSIGN(ChromePluginMessageFilter);
};

#endif  // CHROME_BROWSER_CHROME_PLUGIN_MESSAGE_FILTER_H_