user_image_screen.h revision 6e8cce623b6e4fe0c9e4af605d675dd9d0338c38 
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_USER_IMAGE_SCREEN_H_
6#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_
7
8#include "base/compiler_specific.h"
9#include "base/memory/scoped_ptr.h"
10#include "chrome/browser/chromeos/camera_presence_notifier.h"
11#include "chrome/browser/chromeos/login/screens/user_image_screen_actor.h"
12#include "chrome/browser/chromeos/login/screens/wizard_screen.h"
13#include "chrome/browser/chromeos/login/users/avatar/user_image_sync_observer.h"
14#include "chrome/browser/image_decoder.h"
15#include "components/user_manager/user.h"
16#include "content/public/browser/notification_observer.h"
17#include "content/public/browser/notification_registrar.h"
18
19namespace base {
20class Timer;
21class Value;
22};
23
24namespace policy {
25class PolicyChangeRegistrar;
26}
27
28namespace chromeos {
29
30class UserImageManager;
31
32class UserImageScreen: public WizardScreen,
33                       public UserImageScreenActor::Delegate,
34                       public ImageDecoder::Delegate,
35                       public content::NotificationObserver,
36                       public UserImageSyncObserver::Observer,
37                       public CameraPresenceNotifier::Observer {
38 public:
39  UserImageScreen(ScreenObserver* screen_observer,
40                  UserImageScreenActor* actor);
41  virtual ~UserImageScreen();
42
43  // WizardScreen implementation:
44  virtual void PrepareToShow() OVERRIDE;
45  virtual void Show() OVERRIDE;
46  virtual void Hide() OVERRIDE;
47  virtual std::string GetName() const OVERRIDE;
48
49  // UserImageScreenActor::Delegate implementation:
50  virtual void OnScreenReady() OVERRIDE;
51  virtual void OnPhotoTaken(const std::string& raw_data) OVERRIDE;
52  virtual void OnImageSelected(const std::string& image_url,
53                               const std::string& image_type,
54                               bool is_user_selection) OVERRIDE;
55  virtual void OnImageAccepted() OVERRIDE;
56  virtual void OnActorDestroyed(UserImageScreenActor* actor) OVERRIDE;
57
58  virtual bool profile_picture_absent() OVERRIDE;
59  virtual int selected_image() OVERRIDE;
60  virtual std::string profile_picture_data_url() OVERRIDE;
61
62  // content::NotificationObserver implementation:
63  virtual void Observe(int type,
64                       const content::NotificationSource& source,
65                       const content::NotificationDetails& details) OVERRIDE;
66
67  // ImageDecoder::Delegate implementation:
68  virtual void OnImageDecoded(const ImageDecoder* decoder,
69                              const SkBitmap& decoded_image) OVERRIDE;
70  virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
71
72  // CameraPresenceNotifier::Observer implementation:
73  virtual void OnCameraPresenceCheckDone(bool is_camera_present) OVERRIDE;
74
75  // UserImageSyncObserver::Observer implementation:
76  virtual void OnInitialSync(bool local_image_updated) OVERRIDE;
77
78  bool user_selected_image() const { return user_has_selected_image_; }
79
80 private:
81  // Called when whaiting for sync timed out.
82  void OnSyncTimeout();
83
84  bool IsWaitingForSync() const;
85
86  // Called when the policy::key::kUserAvatarImage policy changes while the
87  // screen is being shown. If the policy is set, closes the screen because the
88  // user is not allowed to override a policy-set image.
89  void OnUserImagePolicyChanged(const base::Value* previous,
90                                const base::Value* current);
91
92  // Returns current user.
93  const user_manager::User* GetUser();
94
95  // Returns UserImageManager for the current user.
96  UserImageManager* GetUserImageManager();
97
98  // Returns UserImageSyncObserver for the current user.
99  UserImageSyncObserver* GetSyncObserver();
100
101  // Called when it's decided not to skip the screen.
102  void HideCurtain();
103
104  // Closes the screen.
105  void ExitScreen();
106
107  content::NotificationRegistrar notification_registrar_;
108
109  scoped_ptr<policy::PolicyChangeRegistrar> policy_registrar_;
110
111  UserImageScreenActor* actor_;
112
113  // Last ImageDecoder instance used to decode an image blob received by
114  // HandlePhotoTaken.
115  scoped_refptr<ImageDecoder> image_decoder_;
116
117  // Last user photo, if taken.
118  gfx::ImageSkia user_photo_;
119
120  // If |true|, decoded photo should be immediately accepeted (i.e., both
121  // HandleTakePhoto and HandleImageAccepted have already been called but we're
122  // still waiting for  photo image decoding to finish.
123  bool accept_photo_after_decoding_;
124
125  // Index of the selected user image.
126  int selected_image_;
127
128  // Encoded profile picture.
129  std::string profile_picture_data_url_;
130
131  // True if user has no custom profile picture.
132  bool profile_picture_absent_;
133
134  // Timer used for waiting for user image sync.
135  scoped_ptr<base::Timer> sync_timer_;
136
137  // If screen ready to be shown.
138  bool is_screen_ready_;
139
140  // True if user has explicitly selected some image.
141  bool user_has_selected_image_;
142
143  DISALLOW_COPY_AND_ASSIGN(UserImageScreen);
144};
145
146}  // namespace chromeos
147
148#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_
149