chrome/browser/ui/views/hung_renderer_view_win.h

   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_UI_VIEWS_HUNG_RENDERER_VIEW_WIN_H_
   6 #define CHROME_BROWSER_UI_VIEWS_HUNG_RENDERER_VIEW_WIN_H_
   7
   8 #include "base/basictypes.h"
   9 #include "content/public/browser/web_contents.h"
  10
  11 // This class provides functionality to display a Windows 8 metro style hung
  12 // renderer dialog.
  13 class HungRendererDialogMetro {
  14  public:
  15   // Creates or returns the global instance of the HungRendererDialogMetro
  16   // class
  17   static HungRendererDialogMetro* Create();
  18   static HungRendererDialogMetro* GetInstance();
  19
  20   void Show(content::WebContents* contents);
  21   void Hide(content::WebContents* contents);
  22
  23  private:
  24   HungRendererDialogMetro();
  25   ~HungRendererDialogMetro();
  26
  27   // Handlers for the hang monitor dialog displayed in Windows 8 metro.
  28   static void OnMetroKillProcess();
  29   static void OnMetroWait();
  30
  31   // Resets Windows 8 metro specific state like whether the dialog was
  32   // displayed, etc.
  33   void ResetMetroState();
  34
  35   content::WebContents* contents_;
  36
  37   // Set to true if the metro version of the hang dialog is displayed.
  38   // Helps ensure that only one instance of the dialog is displayed at any
  39   // given time.
  40   bool metro_dialog_displayed_;
  41
  42   // Pointer to the global instance of the HungRendererDialogMetro class.
  43   static HungRendererDialogMetro* g_instance_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(HungRendererDialogMetro);
  46 };
  47
  48 #endif  // CHROME_BROWSER_UI_VIEWS_HUNG_RENDERER_VIEW_WIN_H_
  49