1 // Copyright (c) 2012 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 8 #include "base/strings/string16.h" 9 #include "chrome/browser/hang_monitor/hung_window_detector.h" 10 11 // This class provides an implementation the 12 // HungWindowDetector::HungWindowNotification callback interface. 13 // It checks to see if the hung window belongs to a process different 14 // from that of the browser process and, if so, it returns an action 15 // of HungWindowNotification::HUNG_WINDOW_TERMINATE_PROCESS. 16 // Note: We can write other action classes that implement the same 17 // interface and switch the action done on hung plugins based on user 18 // preferences. 19 class HungPluginAction : public HungWindowDetector::HungWindowNotification { 20 public: 21 HungPluginAction(); 22 ~HungPluginAction(); 23 // HungWindowNotification implementation 24 virtual bool OnHungWindowDetected(HWND hung_window, 25 HWND top_level_window, 26 ActionOnHungWindow* action); 27 28 protected: 29 void OnWindowResponsive(HWND window); 30 31 // The callback function for the SendMessageCallback API 32 static void CALLBACK HungWindowResponseCallback(HWND target_window, 33 UINT message, 34 ULONG_PTR data, 35 LRESULT result); 36 37 static BOOL CALLBACK DismissMessageBox(HWND window, LPARAM ignore); 38 39 protected: 40 bool GetPluginNameAndVersion(HWND plugin_window, 41 DWORD browser_process_id, 42 base::string16* plugin_name, 43 base::string16* plugin_version); 44 // The currently hung plugin window that we are prompting the user about 45 HWND current_hung_plugin_window_; 46 }; 47 48 #endif // CHROME_BROWSER_HANG_MONITOR_HUNG_PLUGIN_ACTION_H__ 49