1// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_HANG_MONITOR_HUNG_PLUGIN_ACTION_H__
6#define CHROME_BROWSER_HANG_MONITOR_HUNG_PLUGIN_ACTION_H__
7#pragma once
8
9#include "chrome/browser/hang_monitor/hung_window_detector.h"
10// This class provides an implementation the
11// HungWindowDetector::HungWindowNotification callback interface.
12// It checks to see if the hung window belongs to a process different
13// from that of the browser process and, if so, it returns an action
14// of HungWindowNotification::HUNG_WINDOW_TERMINATE_PROCESS.
15// Note: We can write other action classes that implement the same
16// interface and switch the action done on hung plugins based on user
17// preferences.
18class HungPluginAction : public HungWindowDetector::HungWindowNotification {
19 public:
20  HungPluginAction();
21  ~HungPluginAction();
22  // HungWindowNotification implementation
23  virtual bool OnHungWindowDetected(HWND hung_window,
24                                    HWND top_level_window,
25                                    ActionOnHungWindow* action);
26
27 protected:
28  void OnWindowResponsive(HWND window);
29
30  // The callback function for the SendMessageCallback API
31  static void CALLBACK HungWindowResponseCallback(HWND target_window,
32                                                  UINT message,
33                                                  ULONG_PTR data,
34                                                  LRESULT result);
35
36  static BOOL CALLBACK DismissMessageBox(HWND window, LPARAM ignore);
37
38 protected:
39  bool GetPluginName(HWND plugin_window,
40                     DWORD browser_process_id,
41                     std::wstring *plugin_name);
42  // The currently hung plugin window that we are prompting the user about
43  HWND current_hung_plugin_window_;
44};
45
46#endif  // CHROME_BROWSER_HANG_MONITOR_HUNG_PLUGIN_ACTION_H__
47