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 10namespace 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. 15class 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 43