Home | History | Annotate | Download | only in screens 
      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 
     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 UserImageManager;
     31 class ScreenManager;
     32 
     33 class UserImageScreen: public WizardScreen,
     34                        public UserImageScreenActor::Delegate,
     35                        public ImageDecoder::Delegate,
     36                        public content::NotificationObserver,
     37                        public UserImageSyncObserver::Observer,
     38                        public CameraPresenceNotifier::Observer {
     39  public:
     40   UserImageScreen(ScreenObserver* screen_observer,
     41                   UserImageScreenActor* actor);
     42   virtual ~UserImageScreen();
     43 
     44   static UserImageScreen* Get(ScreenManager* manager);
     45 
     46   // WizardScreen implementation:
     47   virtual void PrepareToShow() OVERRIDE;
     48   virtual void Show() OVERRIDE;
     49   virtual void Hide() OVERRIDE;
     50   virtual std::string GetName() const OVERRIDE;
     51 
     52   // UserImageScreenActor::Delegate implementation:
     53   virtual void OnScreenReady() OVERRIDE;
     54   virtual void OnPhotoTaken(const std::string& raw_data) 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   // CameraPresenceNotifier::Observer implementation:
     76   virtual void OnCameraPresenceCheckDone(bool is_camera_present) OVERRIDE;
     77 
     78   // UserImageSyncObserver::Observer implementation:
     79   virtual void OnInitialSync(bool local_image_updated) OVERRIDE;
     80 
     81   bool user_selected_image() const { return user_has_selected_image_; }
     82 
     83  private:
     84   // Called when whaiting for sync timed out.
     85   void OnSyncTimeout();
     86 
     87   bool IsWaitingForSync() const;
     88 
     89   // Called when the policy::key::kUserAvatarImage policy changes while the
     90   // screen is being shown. If the policy is set, closes the screen because the
     91   // user is not allowed to override a policy-set image.
     92   void OnUserImagePolicyChanged(const base::Value* previous,
     93                                 const base::Value* current);
     94 
     95   // Returns current user.
     96   const user_manager::User* GetUser();
     97 
     98   // Returns UserImageManager for the current user.
     99   UserImageManager* GetUserImageManager();
    100 
    101   // Returns UserImageSyncObserver for the current user.
    102   UserImageSyncObserver* GetSyncObserver();
    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   // Last ImageDecoder instance used to decode an image blob received by
    117   // HandlePhotoTaken.
    118   scoped_refptr<ImageDecoder> image_decoder_;
    119 
    120   // Last user photo, if taken.
    121   gfx::ImageSkia user_photo_;
    122 
    123   // If |true|, decoded photo should be immediately accepeted (i.e., both
    124   // HandleTakePhoto and HandleImageAccepted have already been called but we're
    125   // still waiting for  photo image decoding to finish.
    126   bool accept_photo_after_decoding_;
    127 
    128   // Index of the selected user image.
    129   int selected_image_;
    130 
    131   // Encoded profile picture.
    132   std::string profile_picture_data_url_;
    133 
    134   // True if user has no custom profile picture.
    135   bool profile_picture_absent_;
    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_
    152