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      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 #include "chrome/browser/chromeos/background/ash_user_wallpaper_delegate.h"
      6 
      7 #include "ash/desktop_background/user_wallpaper_delegate.h"
      8 #include "ash/shell.h"
      9 #include "ash/wm/window_animations.h"
     10 #include "base/command_line.h"
     11 #include "base/logging.h"
     12 #include "chrome/browser/chrome_notification_types.h"
     13 #include "chrome/browser/chromeos/extensions/wallpaper_manager_util.h"
     14 #include "chrome/browser/chromeos/login/startup_utils.h"
     15 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
     16 #include "chrome/browser/chromeos/login/wizard_controller.h"
     17 #include "chromeos/chromeos_switches.h"
     18 #include "chromeos/login/login_state.h"
     19 #include "components/user_manager/user.h"
     20 #include "components/user_manager/user_manager.h"
     21 #include "content/public/browser/notification_service.h"
     22 
     23 namespace chromeos {
     24 
     25 namespace {
     26 
     27 bool IsNormalWallpaperChange() {
     28   if (chromeos::LoginState::Get()->IsUserLoggedIn() ||
     29       !CommandLine::ForCurrentProcess()->HasSwitch(
     30           switches::kFirstExecAfterBoot) ||
     31       WizardController::IsZeroDelayEnabled() ||
     32       !CommandLine::ForCurrentProcess()->HasSwitch(switches::kLoginManager)) {
     33     return true;
     34   }
     35 
     36   return false;
     37 }
     38 
     39 class UserWallpaperDelegate : public ash::UserWallpaperDelegate {
     40  public:
     41   UserWallpaperDelegate()
     42       : boot_animation_finished_(false),
     43         animation_duration_override_in_ms_(0) {
     44   }
     45 
     46   virtual ~UserWallpaperDelegate() {
     47   }
     48 
     49   virtual int GetAnimationType() OVERRIDE {
     50     return ShouldShowInitialAnimation() ?
     51         ash::WINDOW_VISIBILITY_ANIMATION_TYPE_BRIGHTNESS_GRAYSCALE :
     52         static_cast<int>(wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
     53   }
     54 
     55   virtual int GetAnimationDurationOverride() OVERRIDE {
     56     return animation_duration_override_in_ms_;
     57   }
     58 
     59   virtual void SetAnimationDurationOverride(
     60       int animation_duration_in_ms) OVERRIDE {
     61     animation_duration_override_in_ms_ = animation_duration_in_ms;
     62   }
     63 
     64   virtual bool ShouldShowInitialAnimation() OVERRIDE {
     65     if (IsNormalWallpaperChange() || boot_animation_finished_)
     66       return false;
     67 
     68     // It is a first boot case now. If kDisableBootAnimation flag
     69     // is passed, it only disables any transition after OOBE.
     70     bool is_registered = StartupUtils::IsDeviceRegistered();
     71     const CommandLine* command_line = CommandLine::ForCurrentProcess();
     72     bool disable_boot_animation = command_line->
     73         HasSwitch(switches::kDisableBootAnimation);
     74     if (is_registered && disable_boot_animation)
     75       return false;
     76 
     77     return true;
     78   }
     79 
     80   virtual void UpdateWallpaper(bool clear_cache) OVERRIDE {
     81     chromeos::WallpaperManager::Get()->UpdateWallpaper(clear_cache);
     82   }
     83 
     84   virtual void InitializeWallpaper() OVERRIDE {
     85     chromeos::WallpaperManager::Get()->InitializeWallpaper();
     86   }
     87 
     88   virtual void OpenSetWallpaperPage() OVERRIDE {
     89     if (CanOpenSetWallpaperPage())
     90       wallpaper_manager_util::OpenWallpaperManager();
     91   }
     92 
     93   virtual bool CanOpenSetWallpaperPage() OVERRIDE {
     94     const LoginState* login_state = LoginState::Get();
     95     const LoginState::LoggedInUserType user_type =
     96         login_state->GetLoggedInUserType();
     97     if (!login_state->IsUserLoggedIn())
     98       return false;
     99 
    100     // Whitelist user types that are allowed to change their wallpaper.  (Guest
    101     // users are not, see crosbug 26900.)
    102     if (user_type != LoginState::LOGGED_IN_USER_REGULAR &&
    103         user_type != LoginState::LOGGED_IN_USER_OWNER &&
    104         user_type != LoginState::LOGGED_IN_USER_PUBLIC_ACCOUNT &&
    105         user_type != LoginState::LOGGED_IN_USER_SUPERVISED) {
    106       return false;
    107     }
    108     const user_manager::User* user =
    109         user_manager::UserManager::Get()->GetActiveUser();
    110     if (!user)
    111       return false;
    112     if (chromeos::WallpaperManager::Get()->IsPolicyControlled(user->email()))
    113       return false;
    114     return true;
    115   }
    116 
    117   virtual void OnWallpaperAnimationFinished() OVERRIDE {
    118     content::NotificationService::current()->Notify(
    119         chrome::NOTIFICATION_WALLPAPER_ANIMATION_FINISHED,
    120         content::NotificationService::AllSources(),
    121         content::NotificationService::NoDetails());
    122   }
    123 
    124   virtual void OnWallpaperBootAnimationFinished() OVERRIDE {
    125     // Make sure that boot animation type is used only once.
    126     boot_animation_finished_ = true;
    127   }
    128 
    129  private:
    130   bool boot_animation_finished_;
    131 
    132   // The animation duration to show a new wallpaper if an animation is required.
    133   int animation_duration_override_in_ms_;
    134 
    135   DISALLOW_COPY_AND_ASSIGN(UserWallpaperDelegate);
    136 };
    137 
    138 }  // namespace
    139 
    140 ash::UserWallpaperDelegate* CreateUserWallpaperDelegate() {
    141   return new chromeos::UserWallpaperDelegate();
    142 }
    143 
    144 }  // namespace chromeos
    145