src/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 "chrome/browser/chromeos/login/screens/user_image_screen_actor.h"
  11 #include "chrome/browser/chromeos/login/screens/wizard_screen.h"
  12 #include "chrome/browser/chromeos/login/user.h"
  13 #include "chrome/browser/chromeos/login/user_image_sync_observer.h"
  14 #include "chrome/browser/image_decoder.h"
  15 #include "content/public/browser/notification_observer.h"
  16 #include "content/public/browser/notification_registrar.h"
  17
  18 namespace base {
  19 class Timer;
  20 class Value;
  21 };
  22
  23 namespace policy {
  24 class PolicyChangeRegistrar;
  25 }
  26
  27 namespace chromeos {
  28
  29 class UserImageScreen: public WizardScreen,
  30                        public UserImageScreenActor::Delegate,
  31                        public ImageDecoder::Delegate,
  32                        public content::NotificationObserver,
  33                        public UserImageSyncObserver::Observer {
  34  public:
  35   UserImageScreen(ScreenObserver* screen_observer,
  36                   UserImageScreenActor* actor);
  37   virtual ~UserImageScreen();
  38
  39   // Indicates whether profile picture is enabled for given user.
  40   void SetProfilePictureEnabled(bool support_profile_picture);
  41   // Sets |user_id| of user that would have picture updated.
  42   void SetUserID(const std::string& user_id);
  43
  44   // WizardScreen implementation:
  45   virtual void PrepareToShow() OVERRIDE;
  46   virtual void Show() OVERRIDE;
  47   virtual void Hide() OVERRIDE;
  48   virtual std::string GetName() const OVERRIDE;
  49
  50   // UserImageScreenActor::Delegate implementation:
  51   virtual void OnScreenReady() OVERRIDE;
  52   virtual void OnPhotoTaken(const std::string& raw_data) OVERRIDE;
  53   virtual void OnImageSelected(const std::string& image_url,
  54                                const std::string& image_type,
  55                                bool is_user_selection) OVERRIDE;
  56   virtual void OnImageAccepted() OVERRIDE;
  57   virtual void OnActorDestroyed(UserImageScreenActor* actor) OVERRIDE;
  58
  59   virtual bool profile_picture_absent() OVERRIDE;
  60   virtual int selected_image() OVERRIDE;
  61   virtual std::string profile_picture_data_url() OVERRIDE;
  62
  63   // content::NotificationObserver implementation:
  64   virtual void Observe(int type,
  65                        const content::NotificationSource& source,
  66                        const content::NotificationDetails& details) OVERRIDE;
  67
  68   // ImageDecoder::Delegate implementation:
  69   virtual void OnImageDecoded(const ImageDecoder* decoder,
  70                               const SkBitmap& decoded_image) OVERRIDE;
  71   virtual void OnDecodeImageFailed(const ImageDecoder* decoder) OVERRIDE;
  72   virtual void OnCameraPresenceCheckDone(bool is_camera_present) OVERRIDE;
  73
  74   // UserImageSyncObserver::Observer implementation:
  75   virtual void OnInitialSync(bool local_image_updated) OVERRIDE;
  76
  77   bool user_selected_image() const { return user_has_selected_image_; }
  78
  79  private:
  80   // Called when whaiting for sync timed out.
  81   void OnSyncTimeout();
  82
  83   bool IsWaitingForSync() const;
  84
  85   // Called when the policy::key::kUserAvatarImage policy changes while the
  86   // screen is being shown. If the policy is set, closes the screen because the
  87   // user is not allowed to override a policy-set image.
  88   void OnUserImagePolicyChanged(const base::Value* previous,
  89                                 const base::Value* current);
  90
  91   // Returns current user.
  92   const User* GetUser();
  93
  94   // Returns UserImageManager for the current user.
  95   UserImageManager* GetUserImageManager();
  96
  97   // Returns UserImageSyncObserver for the current user.
  98   UserImageSyncObserver* GetSyncObserver();
  99
 100   // Called when it's decided not to skip the screen.
 101   void HideCurtain();
 102
 103   // Closes the screen.
 104   void ExitScreen();
 105
 106   content::NotificationRegistrar notification_registrar_;
 107
 108   scoped_ptr<policy::PolicyChangeRegistrar> policy_registrar_;
 109
 110   UserImageScreenActor* actor_;
 111
 112   // Last ImageDecoder instance used to decode an image blob received by
 113   // HandlePhotoTaken.
 114   scoped_refptr<ImageDecoder> image_decoder_;
 115
 116   // Last user photo, if taken.
 117   gfx::ImageSkia user_photo_;
 118
 119   // If |true|, decoded photo should be immediately accepeted (i.e., both
 120   // HandleTakePhoto and HandleImageAccepted have already been called but we're
 121   // still waiting for  photo image decoding to finish.
 122   bool accept_photo_after_decoding_;
 123
 124   // Index of the selected user image.
 125   int selected_image_;
 126
 127   bool profile_picture_enabled_;
 128
 129   // Encoded profile picture.
 130   std::string profile_picture_data_url_;
 131
 132   // True if user has no custom profile picture.
 133   bool profile_picture_absent_;
 134
 135   std::string user_id_;
 136
 137   // Timer used for waiting for user image sync.
 138   scoped_ptr<base::Timer> sync_timer_;
 139
 140   // If screen ready to be shown.
 141   bool is_screen_ready_;
 142
 143   // True if user has explicitly selected some image.
 144   bool user_has_selected_image_;
 145
 146   DISALLOW_COPY_AND_ASSIGN(UserImageScreen);
 147 };
 148
 149 }  // namespace chromeos
 150
 151 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_USER_IMAGE_SCREEN_H_