screen_observer.h revision 116680a4aac90f2aa7413d9095a592090648e557
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_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_
6#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_
7
8#include <string>
9
10namespace chromeos {
11
12class ErrorScreen;
13class WizardScreen;
14
15// Interface that handles notifications received from any of login wizard
16// screens.
17class ScreenObserver {
18 public:
19  // Each login screen or a view shown within login wizard view is itself a
20  // state. Upon exit each view returns one of the results by calling OnExit()
21  // method. Depending on the result and the current view or state login wizard
22  // decides what is the next view to show. There must be an exit code for each
23  // way to exit the screen for each screen. (Numeric ids are provided to
24  // facilitate interpretation of log files only, they are subject to change
25  // without notice.)
26  enum ExitCodes {
27    // "Continue" was pressed on network screen and network is online.
28    NETWORK_CONNECTED = 0,
29    HID_DETECTION_COMPLETED = 1,
30    // Connection failed while trying to load a WebPageScreen.
31    CONNECTION_FAILED = 2,
32    UPDATE_INSTALLED = 3,
33    UPDATE_NOUPDATE = 4,
34    UPDATE_ERROR_CHECKING_FOR_UPDATE = 5,
35    UPDATE_ERROR_UPDATING = 6,
36    USER_IMAGE_SELECTED = 7,
37    EULA_ACCEPTED = 8,
38    EULA_BACK = 9,
39    ENTERPRISE_AUTO_ENROLLMENT_CHECK_COMPLETED = 10,
40    ENTERPRISE_ENROLLMENT_COMPLETED = 11,
41    ENTERPRISE_AUTO_MAGIC_ENROLLMENT_COMPLETED = 12,
42    ENTERPRISE_ENROLLMENT_BACK = 13,
43    RESET_CANCELED = 14,
44    KIOSK_AUTOLAUNCH_CANCELED = 15,
45    KIOSK_AUTOLAUNCH_CONFIRMED = 16,
46    KIOSK_ENABLE_COMPLETED = 17,
47    TERMS_OF_SERVICE_DECLINED = 18,
48    TERMS_OF_SERVICE_ACCEPTED = 19,
49    WRONG_HWID_WARNING_SKIPPED = 20,
50    CONTROLLER_PAIRING_FINISHED = 21,
51    HOST_PAIRING_FINISHED = 22,
52    EXIT_CODES_COUNT  // not a real code, must be the last
53  };
54
55  // Method called by a screen when user's done with it.
56  virtual void OnExit(ExitCodes exit_code) = 0;
57
58  // Forces current screen showing.
59  virtual void ShowCurrentScreen() = 0;
60
61  // Notify about new user names and password. It is used to autologin
62  // just created user without asking the same info once again.
63  virtual void OnSetUserNamePassword(const std::string& username,
64                                     const std::string& password) = 0;
65
66  // Whether usage statistics reporting is enabled on EULA screen.
67  virtual void SetUsageStatisticsReporting(bool val) = 0;
68  virtual bool GetUsageStatisticsReporting() const = 0;
69
70  virtual ErrorScreen* GetErrorScreen() = 0;
71  virtual void ShowErrorScreen() = 0;
72  virtual void HideErrorScreen(WizardScreen* parent_screen) = 0;
73
74 protected:
75  virtual ~ScreenObserver() {}
76};
77
78}  // namespace chromeos
79
80#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_OBSERVER_H_
81