chrome/browser/chromeos/login/screens/user_image_screen.h

   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 "base/memory/weak_ptr.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/user.h"
  14 #include "chrome/browser/chromeos/login/user_image_sync_observer.h"
  15 #include "chrome/browser/image_decoder.h"
  16 #include "content/public/browser/notification_observer.h"
  17 #include "content/public/browser/notification_registrar.h"
  18
  19 namespace base {
  20 class Timer;
  21 class Value;
  22 };
  23
  24 namespace policy {
  25 class PolicyChangeRegistrar;
  26 }
  27
  28 namespace chromeos {
  29
  30 class UserImageScreen: public WizardScreen,
  31                        public UserImageScreenActor::Delegate,
  32                        public ImageDecoder::Delegate,
  33                        public content::NotificationObserver,
  34                        public UserImageSyncObserver::Observer {
  35  public:
  36   UserImageScreen(ScreenObserver* screen_observer,
  37                   UserImageScreenActor* actor);
  38   virtual ~UserImageScreen();
  39
  40   // Indicates whether profile picture is enabled for given user.
  41   void SetProfilePictureEnabled(bool support_profile_picture);
  42   // Sets |user_id| of user that would have picture updated.
  43   void SetUserID(const std::string& user_id);
  44
  45   // WizardScreen implementation:
  46   virtual void PrepareToShow() OVERRIDE;
  47   virtual void Show() OVERRIDE;
  48   virtual void Hide() OVERRIDE;
  49   virtual std::string GetName() const OVERRIDE;
  50
  51   // UserImageScreenActor::Delegate implementation:
  52   virtual void OnScreenReady() OVERRIDE;
  53   virtual void OnPhotoTaken(const std::string& raw_data) OVERRIDE;
  54   virtual void CheckCameraPresence() OVERRIDE;
  55   virtual void OnImageSelected(const std::string& image_url,
  56                                const std::string& image_type,
  57                                bool is_user_selection) OVERRIDE;
  58   virtual void OnImageAccepted() OVERRIDE;
  59   virtual void OnActorDestroyed(UserImageScreenActor* actor) OVERRIDE;
  60
  61   virtual bool profile_picture_absent() OVERRIDE;
  62   virtual int selected_image() OVERRIDE;
  63   virtual std::string profile_picture_data_url() OVERRIDE;
  64
  65   // content::NotificationObserver implementation:
  66   virtual void Observe(int type,
  67                        const content::NotificationSource& source,
  68                        const content::NotificationDetails& details) OVERRIDE;
  69
  70   // ImageDecoder::Delegate implementation:
  71   virtual void OnImageDecoded(const ImageDecoder* decoder,
  72                               const SkBitmap& decoded_image) OVERRIDE;
  73   virtual void OnDecodeImageFailed(const ImageDecoder* decoder) 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* 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 the camera presence check has been completed.
 102   void OnCameraPresenceCheckDone();
 103
 104   // Called when it's decided not to skip the screen.
 105   void HideCurtain();
 106
 107   // Closes the screen.
 108   void ExitScreen();
 109
 110   content::NotificationRegistrar notification_registrar_;
 111
 112   scoped_ptr<policy::PolicyChangeRegistrar> policy_registrar_;
 113
 114   UserImageScreenActor* actor_;
 115
 116   base::WeakPtrFactory<UserImageScreen> weak_factory_;
 117
 118   // Last ImageDecoder instance used to decode an image blob received by
 119   // HandlePhotoTaken.
 120   scoped_refptr<ImageDecoder> image_decoder_;
 121
 122   // Last user photo, if taken.
 123   gfx::ImageSkia user_photo_;
 124
 125   // If |true|, decoded photo should be immediately accepeted (i.e., both
 126   // HandleTakePhoto and HandleImageAccepted have already been called but we're
 127   // still waiting for  photo image decoding to finish.
 128   bool accept_photo_after_decoding_;
 129
 130   // Index of the selected user image.
 131   int selected_image_;
 132
 133   bool profile_picture_enabled_;
 134
 135   // Encoded profile picture.
 136   std::string profile_picture_data_url_;
 137
 138   // True if user has no custom profile picture.
 139   bool profile_picture_absent_;
 140
 141   std::string user_id_;
 142
 143   // Timer used for waiting for user image sync.
 144   scoped_ptr<base::Timer> sync_timer_;
 145
 146   // If screen ready to be shown.
 147   bool is_screen_ready_;
 148
 149   // True if user has explicitly selected some image.
 150   bool user_has_selected_image_;
 151
 152   // True if camera was available last time.
 153   bool was_camera_present_;
 154
 155   DISALLOW_COPY_AND_ASSIGN(UserImageScreen);
 156 };
 157
 158 }  // namespace chromeos
 159
 160 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_