chrome/browser/chromeos/login/ui/user_adding_screen.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_USER_ADDING_SCREEN_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_USER_ADDING_SCREEN_H_
   7
   8 #include "base/basictypes.h"
   9
  10 namespace chromeos {
  11
  12 // An interface that defines screen for adding users into multi-profile session.
  13 // Current implementation is a singleton.
  14 // TODO(dzhioev): get rid of singleton.
  15 class UserAddingScreen {
  16  public:
  17   struct Observer {
  18     virtual void OnUserAddingStarted() {}
  19     virtual void OnUserAddingFinished() {}
  20     virtual ~Observer() {}
  21   };
  22
  23   static UserAddingScreen* Get();
  24
  25   virtual void Start() = 0;
  26   virtual void Cancel() = 0;
  27   virtual bool IsRunning() = 0;
  28
  29   virtual void AddObserver(Observer* observer) = 0;
  30   virtual void RemoveObserver(Observer* observer) = 0;
  31
  32  protected:
  33   UserAddingScreen();
  34   virtual ~UserAddingScreen();
  35
  36   DISALLOW_COPY_AND_ASSIGN(UserAddingScreen);
  37 };
  38
  39 }  // namespace chromeos
  40
  41 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_USER_ADDING_SCREEN_H_
  42