chrome/browser/chromeos/login/ui/lock_window.h

   1 // Copyright 2014 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_CHROMEOS_LOGIN_UI_LOCK_WINDOW_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOCK_WINDOW_H_
   7
   8 #include "base/basictypes.h"
   9
  10 namespace views {
  11 class View;
  12 class Widget;
  13 }
  14
  15 namespace chromeos {
  16
  17 // This is the interface which lock windows used for the WebUI screen locker
  18 // implement.
  19 class LockWindow {
  20  public:
  21   // This class provides an interface for the lock window to notify an observer
  22   // about its status.
  23   class Observer {
  24    public:
  25     // This method will be called when the lock window has finished all
  26     // initialization.
  27     virtual void OnLockWindowReady() = 0;
  28   };
  29
  30   LockWindow();
  31
  32   // Attempt to grab inputs on the webview, the actual view displaying the lock
  33   // screen WebView.
  34   virtual void Grab() = 0;
  35
  36   // Returns the actual widget for the lock window.
  37   virtual views::Widget* GetWidget() = 0;
  38
  39   // Sets the observer class which is notified on lock window events.
  40   void set_observer(Observer* observer) {
  41     observer_ = observer;
  42   }
  43
  44   // Sets the view which should be initially focused.
  45   void set_initially_focused_view(views::View* view) {
  46     initially_focused_view_ = view;
  47   }
  48
  49   // Creates an instance of the platform specific lock window.
  50   static LockWindow* Create();
  51
  52  protected:
  53   // The observer's OnLockWindowReady method will be called when the lock
  54   // window has finished all initialization.
  55   Observer* observer_;
  56
  57   // The view which should be initially focused.
  58   views::View* initially_focused_view_;
  59
  60  private:
  61   DISALLOW_COPY_AND_ASSIGN(LockWindow);
  62 };
  63
  64 }  // namespace chromeos
  65
  66 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOCK_WINDOW_H_