chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc

   1 // Copyright 2013 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/ui/ash/chrome_shell_delegate.h"
   6
   7 #include "ash/accessibility_delegate.h"
   8 #include "ash/media_delegate.h"
   9 #include "ash/wm/mru_window_tracker.h"
  10 #include "ash/wm/window_util.h"
  11 #include "base/command_line.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "chrome/browser/accessibility/accessibility_events.h"
  14 #include "chrome/browser/chrome_notification_types.h"
  15 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
  16 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
  17 #include "chrome/browser/chromeos/background/ash_user_wallpaper_delegate.h"
  18 #include "chrome/browser/chromeos/display/display_configuration_observer.h"
  19 #include "chrome/browser/chromeos/display/display_preferences.h"
  20 #include "chrome/browser/chromeos/extensions/media_player_api.h"
  21 #include "chrome/browser/chromeos/extensions/media_player_event_router.h"
  22 #include "chrome/browser/profiles/profile_manager.h"
  23 #include "chrome/browser/speech/tts_controller.h"
  24 #include "chrome/browser/ui/ash/caps_lock_delegate_chromeos.h"
  25 #include "chrome/browser/ui/ash/chrome_new_window_delegate_chromeos.h"
  26 #include "chrome/browser/ui/ash/session_state_delegate_chromeos.h"
  27 #include "chrome/browser/ui/ash/system_tray_delegate_chromeos.h"
  28 #include "chrome/browser/ui/browser.h"
  29 #include "chrome/browser/ui/browser_finder.h"
  30 #include "chrome/browser/ui/browser_window.h"
  31 #include "chrome/common/pref_names.h"
  32 #include "chromeos/chromeos_switches.h"
  33 #include "chromeos/dbus/dbus_thread_manager.h"
  34 #include "chromeos/dbus/power_manager_client.h"
  35 #include "chromeos/ime/input_method_manager.h"
  36 #include "content/public/browser/notification_service.h"
  37 #include "content/public/browser/user_metrics.h"
  38 #include "grit/generated_resources.h"
  39 #include "ui/aura/window.h"
  40 #include "ui/base/l10n/l10n_util.h"
  41
  42 namespace {
  43
  44 // This function is used for restoring focus after the user session is started.
  45 // It's needed because some windows can be opened in background while login UI
  46 // is still active because we currently restore browser windows before login UI
  47 // is deleted.
  48 void RestoreFocus() {
  49   ash::MruWindowTracker::WindowList mru_list =
  50       ash::Shell::GetInstance()->mru_window_tracker()->BuildMruWindowList();
  51   if (!mru_list.empty())
  52     mru_list.front()->Focus();
  53 }
  54
  55 class AccessibilityDelegateImpl : public ash::AccessibilityDelegate {
  56  public:
  57   AccessibilityDelegateImpl() {}
  58   virtual ~AccessibilityDelegateImpl() {}
  59
  60   virtual void ToggleHighContrast() OVERRIDE {
  61     DCHECK(chromeos::AccessibilityManager::Get());
  62     chromeos::AccessibilityManager::Get()->EnableHighContrast(
  63         !chromeos::AccessibilityManager::Get()->IsHighContrastEnabled());
  64   }
  65
  66   virtual bool IsSpokenFeedbackEnabled() const OVERRIDE {
  67     DCHECK(chromeos::AccessibilityManager::Get());
  68     return chromeos::AccessibilityManager::Get()->IsSpokenFeedbackEnabled();
  69   }
  70
  71   virtual void ToggleSpokenFeedback(
  72       ash::AccessibilityNotificationVisibility notify) OVERRIDE {
  73     DCHECK(chromeos::AccessibilityManager::Get());
  74     chromeos::AccessibilityManager::Get()->ToggleSpokenFeedback(notify);
  75   }
  76
  77   virtual bool IsHighContrastEnabled() const OVERRIDE {
  78     DCHECK(chromeos::AccessibilityManager::Get());
  79     return chromeos::AccessibilityManager::Get()->IsHighContrastEnabled();
  80   }
  81
  82   virtual void SetMagnifierEnabled(bool enabled) OVERRIDE {
  83     DCHECK(chromeos::MagnificationManager::Get());
  84     return chromeos::MagnificationManager::Get()->SetMagnifierEnabled(enabled);
  85   }
  86
  87   virtual void SetMagnifierType(ash::MagnifierType type) OVERRIDE {
  88     DCHECK(chromeos::MagnificationManager::Get());
  89     return chromeos::MagnificationManager::Get()->SetMagnifierType(type);
  90   }
  91
  92   virtual bool IsMagnifierEnabled() const OVERRIDE {
  93     DCHECK(chromeos::MagnificationManager::Get());
  94     return chromeos::MagnificationManager::Get()->IsMagnifierEnabled();
  95   }
  96
  97   virtual ash::MagnifierType GetMagnifierType() const OVERRIDE {
  98     DCHECK(chromeos::MagnificationManager::Get());
  99     return chromeos::MagnificationManager::Get()->GetMagnifierType();
 100   }
 101
 102   virtual void SetLargeCursorEnabled(bool enabled) OVERRIDE {
 103     DCHECK(chromeos::AccessibilityManager::Get());
 104     return chromeos::AccessibilityManager::Get()->EnableLargeCursor(enabled);
 105   }
 106
 107   virtual bool IsLargeCursorEnabled() const OVERRIDE {
 108     DCHECK(chromeos::AccessibilityManager::Get());
 109     return chromeos::AccessibilityManager::Get()->IsLargeCursorEnabled();
 110   }
 111
 112   virtual void SetAutoclickEnabled(bool enabled) OVERRIDE {
 113     DCHECK(chromeos::AccessibilityManager::Get());
 114     return chromeos::AccessibilityManager::Get()->EnableAutoclick(enabled);
 115   }
 116
 117   virtual bool IsAutoclickEnabled() const OVERRIDE {
 118     DCHECK(chromeos::AccessibilityManager::Get());
 119     return chromeos::AccessibilityManager::Get()->IsAutoclickEnabled();
 120   }
 121
 122   virtual bool ShouldShowAccessibilityMenu() const OVERRIDE {
 123     DCHECK(chromeos::AccessibilityManager::Get());
 124     return chromeos::AccessibilityManager::Get()->
 125         ShouldShowAccessibilityMenu();
 126   }
 127
 128   virtual void SilenceSpokenFeedback() const OVERRIDE {
 129     TtsController::GetInstance()->Stop();
 130   }
 131
 132   virtual void SaveScreenMagnifierScale(double scale) OVERRIDE {
 133     if (chromeos::MagnificationManager::Get())
 134       chromeos::MagnificationManager::Get()->SaveScreenMagnifierScale(scale);
 135   }
 136
 137   virtual double GetSavedScreenMagnifierScale() OVERRIDE {
 138     if (chromeos::MagnificationManager::Get()) {
 139       return chromeos::MagnificationManager::Get()->
 140           GetSavedScreenMagnifierScale();
 141     }
 142     return std::numeric_limits<double>::min();
 143   }
 144
 145   virtual void TriggerAccessibilityAlert(
 146       ash::AccessibilityAlert alert) OVERRIDE {
 147     Profile* profile = ProfileManager::GetActiveUserProfile();
 148     if (profile) {
 149       switch (alert) {
 150         case ash::A11Y_ALERT_WINDOW_NEEDED: {
 151           AccessibilityAlertInfo event(
 152               profile, l10n_util::GetStringUTF8(IDS_A11Y_ALERT_WINDOW_NEEDED));
 153           SendControlAccessibilityNotification(
 154               ui::AccessibilityTypes::EVENT_ALERT, &event);
 155           break;
 156         }
 157         case ash::A11Y_ALERT_NONE:
 158           break;
 159       }
 160     }
 161   }
 162
 163   virtual ash::AccessibilityAlert GetLastAccessibilityAlert() OVERRIDE {
 164     return ash::A11Y_ALERT_NONE;
 165   }
 166
 167   virtual base::TimeDelta PlayShutdownSound() const OVERRIDE {
 168     return chromeos::AccessibilityManager::Get()->PlayShutdownSound();
 169   }
 170
 171  private:
 172   DISALLOW_COPY_AND_ASSIGN(AccessibilityDelegateImpl);
 173 };
 174
 175 class MediaDelegateImpl : public ash::MediaDelegate {
 176  public:
 177   MediaDelegateImpl() {}
 178   virtual ~MediaDelegateImpl() {}
 179
 180   virtual void HandleMediaNextTrack() OVERRIDE {
 181     extensions::MediaPlayerAPI::Get(
 182         ProfileManager::GetActiveUserProfile())->
 183             media_player_event_router()->NotifyNextTrack();
 184   }
 185
 186   virtual void HandleMediaPlayPause() OVERRIDE {
 187     extensions::MediaPlayerAPI::Get(
 188         ProfileManager::GetActiveUserProfile())->
 189             media_player_event_router()->NotifyTogglePlayState();
 190   }
 191
 192   virtual void HandleMediaPrevTrack() OVERRIDE {
 193     extensions::MediaPlayerAPI::Get(
 194         ProfileManager::GetActiveUserProfile())->
 195             media_player_event_router()->NotifyPrevTrack();
 196   }
 197
 198  private:
 199   DISALLOW_COPY_AND_ASSIGN(MediaDelegateImpl);
 200 };
 201
 202 }  // anonymous namespace
 203
 204 bool ChromeShellDelegate::IsFirstRunAfterBoot() const {
 205   return CommandLine::ForCurrentProcess()->HasSwitch(
 206       chromeos::switches::kFirstExecAfterBoot);
 207 }
 208
 209 void ChromeShellDelegate::PreInit() {
 210   chromeos::LoadDisplayPreferences(IsFirstRunAfterBoot());
 211   // Set the observer now so that we can save the initial state
 212   // in Shell::Init.
 213   display_configuration_observer_.reset(
 214       new chromeos::DisplayConfigurationObserver());
 215 }
 216
 217 void ChromeShellDelegate::Shutdown() {
 218   content::RecordAction(base::UserMetricsAction("Shutdown"));
 219   chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
 220       RequestShutdown();
 221 }
 222
 223 ash::CapsLockDelegate* ChromeShellDelegate::CreateCapsLockDelegate() {
 224   chromeos::input_method::XKeyboard* xkeyboard =
 225       chromeos::input_method::InputMethodManager::Get()->GetXKeyboard();
 226   return new CapsLockDelegate(xkeyboard);
 227 }
 228
 229 ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
 230   return new SessionStateDelegateChromeos;
 231 }
 232
 233 ash::AccessibilityDelegate* ChromeShellDelegate::CreateAccessibilityDelegate() {
 234   return new AccessibilityDelegateImpl;
 235 }
 236
 237 ash::NewWindowDelegate* ChromeShellDelegate::CreateNewWindowDelegate() {
 238   return new ChromeNewWindowDelegateChromeos;
 239 }
 240
 241 ash::MediaDelegate* ChromeShellDelegate::CreateMediaDelegate() {
 242   return new MediaDelegateImpl;
 243 }
 244
 245 ash::SystemTrayDelegate* ChromeShellDelegate::CreateSystemTrayDelegate() {
 246   return chromeos::CreateSystemTrayDelegate();
 247 }
 248
 249 ash::UserWallpaperDelegate* ChromeShellDelegate::CreateUserWallpaperDelegate() {
 250   return chromeos::CreateUserWallpaperDelegate();
 251 }
 252
 253 void ChromeShellDelegate::Observe(int type,
 254                                   const content::NotificationSource& source,
 255                                   const content::NotificationDetails& details) {
 256   switch (type) {
 257     case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED:
 258       ash::Shell::GetInstance()->OnLoginUserProfilePrepared();
 259       break;
 260     case chrome::NOTIFICATION_SESSION_STARTED:
 261       RestoreFocus();
 262       ash::Shell::GetInstance()->ShowShelf();
 263       break;
 264     case chrome::NOTIFICATION_APP_TERMINATING:
 265       // Let classes unregister themselves as observers of the
 266       // ash::Shell singleton before the shell is destroyed.
 267       display_configuration_observer_.reset();
 268       break;
 269     default:
 270       NOTREACHED() << "Unexpected notification " << type;
 271   }
 272 }
 273
 274 void ChromeShellDelegate::PlatformInit() {
 275   registrar_.Add(this,
 276                  chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
 277                  content::NotificationService::AllSources());
 278   registrar_.Add(this,
 279                  chrome::NOTIFICATION_SESSION_STARTED,
 280                  content::NotificationService::AllSources());
 281   registrar_.Add(this,
 282                  chrome::NOTIFICATION_APP_TERMINATING,
 283                  content::NotificationService::AllSources());
 284 }