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/accelerators/magnifier_key_scroller.h"
   8 #include "ash/accelerators/spoken_feedback_toggler.h"
   9 #include "ash/accessibility_delegate.h"
  10 #include "ash/wm/mru_window_tracker.h"
  11 #include "ash/wm/window_util.h"
  12 #include "base/command_line.h"
  13 #include "base/prefs/pref_service.h"
  14 #include "chrome/browser/accessibility/accessibility_events.h"
  15 #include "chrome/browser/app_mode/app_mode_utils.h"
  16 #include "chrome/browser/chrome_notification_types.h"
  17 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
  18 #include "chrome/browser/chromeos/accessibility/magnification_manager.h"
  19 #include "chrome/browser/chromeos/background/ash_user_wallpaper_delegate.h"
  20 #include "chrome/browser/chromeos/display/display_configuration_observer.h"
  21 #include "chrome/browser/chromeos/display/display_preferences.h"
  22 #include "chrome/browser/chromeos/profiles/profile_helper.h"
  23 #include "chrome/browser/profiles/profile.h"
  24 #include "chrome/browser/profiles/profile_manager.h"
  25 #include "chrome/browser/signin/signin_error_notifier_factory_ash.h"
  26 #include "chrome/browser/speech/tts_controller.h"
  27 #include "chrome/browser/sync/sync_error_notifier_factory_ash.h"
  28 #include "chrome/browser/ui/ash/chrome_new_window_delegate_chromeos.h"
  29 #include "chrome/browser/ui/ash/media_delegate_chromeos.h"
  30 #include "chrome/browser/ui/ash/session_state_delegate_chromeos.h"
  31 #include "chrome/browser/ui/ash/system_tray_delegate_chromeos.h"
  32 #include "chrome/browser/ui/browser.h"
  33 #include "chrome/browser/ui/browser_finder.h"
  34 #include "chrome/browser/ui/browser_window.h"
  35 #include "chrome/common/pref_names.h"
  36 #include "chrome/grit/generated_resources.h"
  37 #include "chromeos/chromeos_switches.h"
  38 #include "chromeos/ime/input_method_manager.h"
  39 #include "content/public/browser/notification_service.h"
  40 #include "content/public/browser/user_metrics.h"
  41 #include "ui/aura/window.h"
  42 #include "ui/base/l10n/l10n_util.h"
  43
  44 namespace {
  45
  46 void InitAfterSessionStart() {
  47   // Restore focus after the user session is started.  It's needed because some
  48   // windows can be opened in background while login UI is still active because
  49   // we currently restore browser windows before login UI is deleted.
  50   ash::Shell* shell = ash::Shell::GetInstance();
  51   ash::MruWindowTracker::WindowList mru_list =
  52       shell->mru_window_tracker()->BuildMruWindowList();
  53   if (!mru_list.empty())
  54     mru_list.front()->Focus();
  55
  56 #if defined(USE_X11)
  57   // Enable magnifier scroll keys as there may be no mouse cursor in kiosk mode.
  58   ash::MagnifierKeyScroller::SetEnabled(chrome::IsRunningInForcedAppMode());
  59
  60   // Enable long press action to toggle spoken feedback with hotrod
  61   // remote which can't handle shortcut.
  62   ash::SpokenFeedbackToggler::SetEnabled(chrome::IsRunningInForcedAppMode());
  63 #endif
  64 }
  65
  66 class AccessibilityDelegateImpl : public ash::AccessibilityDelegate {
  67  public:
  68   AccessibilityDelegateImpl() {}
  69   virtual ~AccessibilityDelegateImpl() {}
  70
  71   virtual void ToggleHighContrast() override {
  72     DCHECK(chromeos::AccessibilityManager::Get());
  73     chromeos::AccessibilityManager::Get()->EnableHighContrast(
  74         !chromeos::AccessibilityManager::Get()->IsHighContrastEnabled());
  75   }
  76
  77   virtual bool IsSpokenFeedbackEnabled() const override {
  78     DCHECK(chromeos::AccessibilityManager::Get());
  79     return chromeos::AccessibilityManager::Get()->IsSpokenFeedbackEnabled();
  80   }
  81
  82   virtual void ToggleSpokenFeedback(
  83       ash::AccessibilityNotificationVisibility notify) override {
  84     DCHECK(chromeos::AccessibilityManager::Get());
  85     chromeos::AccessibilityManager::Get()->ToggleSpokenFeedback(notify);
  86   }
  87
  88   virtual bool IsHighContrastEnabled() const override {
  89     DCHECK(chromeos::AccessibilityManager::Get());
  90     return chromeos::AccessibilityManager::Get()->IsHighContrastEnabled();
  91   }
  92
  93   virtual void SetMagnifierEnabled(bool enabled) override {
  94     DCHECK(chromeos::MagnificationManager::Get());
  95     return chromeos::MagnificationManager::Get()->SetMagnifierEnabled(enabled);
  96   }
  97
  98   virtual void SetMagnifierType(ash::MagnifierType type) override {
  99     DCHECK(chromeos::MagnificationManager::Get());
 100     return chromeos::MagnificationManager::Get()->SetMagnifierType(type);
 101   }
 102
 103   virtual bool IsMagnifierEnabled() const override {
 104     DCHECK(chromeos::MagnificationManager::Get());
 105     return chromeos::MagnificationManager::Get()->IsMagnifierEnabled();
 106   }
 107
 108   virtual ash::MagnifierType GetMagnifierType() const override {
 109     DCHECK(chromeos::MagnificationManager::Get());
 110     return chromeos::MagnificationManager::Get()->GetMagnifierType();
 111   }
 112
 113   virtual void SetLargeCursorEnabled(bool enabled) override {
 114     DCHECK(chromeos::AccessibilityManager::Get());
 115     return chromeos::AccessibilityManager::Get()->EnableLargeCursor(enabled);
 116   }
 117
 118   virtual bool IsLargeCursorEnabled() const override {
 119     DCHECK(chromeos::AccessibilityManager::Get());
 120     return chromeos::AccessibilityManager::Get()->IsLargeCursorEnabled();
 121   }
 122
 123   virtual void SetAutoclickEnabled(bool enabled) override {
 124     DCHECK(chromeos::AccessibilityManager::Get());
 125     return chromeos::AccessibilityManager::Get()->EnableAutoclick(enabled);
 126   }
 127
 128   virtual bool IsAutoclickEnabled() const override {
 129     DCHECK(chromeos::AccessibilityManager::Get());
 130     return chromeos::AccessibilityManager::Get()->IsAutoclickEnabled();
 131   }
 132
 133   virtual void SetVirtualKeyboardEnabled(bool enabled) override {
 134     DCHECK(chromeos::AccessibilityManager::Get());
 135     return chromeos::AccessibilityManager::Get()->
 136         EnableVirtualKeyboard(enabled);
 137   }
 138
 139   virtual bool IsVirtualKeyboardEnabled() const override {
 140     DCHECK(chromeos::AccessibilityManager::Get());
 141     return chromeos::AccessibilityManager::Get()->IsVirtualKeyboardEnabled();
 142   }
 143
 144   virtual bool ShouldShowAccessibilityMenu() const override {
 145     DCHECK(chromeos::AccessibilityManager::Get());
 146     return chromeos::AccessibilityManager::Get()->
 147         ShouldShowAccessibilityMenu();
 148   }
 149
 150   virtual bool IsBrailleDisplayConnected() const override {
 151     DCHECK(chromeos::AccessibilityManager::Get());
 152     return chromeos::AccessibilityManager::Get()->IsBrailleDisplayConnected();
 153   }
 154
 155   virtual void SilenceSpokenFeedback() const override {
 156     TtsController::GetInstance()->Stop();
 157   }
 158
 159   virtual void SaveScreenMagnifierScale(double scale) override {
 160     if (chromeos::MagnificationManager::Get())
 161       chromeos::MagnificationManager::Get()->SaveScreenMagnifierScale(scale);
 162   }
 163
 164   virtual double GetSavedScreenMagnifierScale() override {
 165     if (chromeos::MagnificationManager::Get()) {
 166       return chromeos::MagnificationManager::Get()->
 167           GetSavedScreenMagnifierScale();
 168     }
 169     return std::numeric_limits<double>::min();
 170   }
 171
 172   virtual void TriggerAccessibilityAlert(
 173       ash::AccessibilityAlert alert) override {
 174     Profile* profile = ProfileManager::GetActiveUserProfile();
 175     if (profile) {
 176       switch (alert) {
 177         case ash::A11Y_ALERT_WINDOW_NEEDED: {
 178           AccessibilityAlertInfo event(
 179               profile, l10n_util::GetStringUTF8(IDS_A11Y_ALERT_WINDOW_NEEDED));
 180           SendControlAccessibilityNotification(
 181               ui::AX_EVENT_ALERT, &event);
 182           break;
 183         }
 184         case ash::A11Y_ALERT_WINDOW_OVERVIEW_MODE_ENTERED: {
 185           AccessibilityAlertInfo event(
 186               profile, l10n_util::GetStringUTF8(
 187                   IDS_A11Y_ALERT_WINDOW_OVERVIEW_MODE_ENTERED));
 188           SendControlAccessibilityNotification(
 189               ui::AX_EVENT_ALERT, &event);
 190           break;
 191         }
 192         case ash::A11Y_ALERT_NONE:
 193           break;
 194       }
 195     }
 196   }
 197
 198   virtual ash::AccessibilityAlert GetLastAccessibilityAlert() override {
 199     return ash::A11Y_ALERT_NONE;
 200   }
 201
 202   virtual void PlayEarcon(int sound_key) override {
 203     DCHECK(chromeos::AccessibilityManager::Get());
 204     return chromeos::AccessibilityManager::Get()->PlayEarcon(sound_key);
 205   }
 206
 207   virtual base::TimeDelta PlayShutdownSound() const override {
 208     return chromeos::AccessibilityManager::Get()->PlayShutdownSound();
 209   }
 210
 211  private:
 212   DISALLOW_COPY_AND_ASSIGN(AccessibilityDelegateImpl);
 213 };
 214
 215 }  // anonymous namespace
 216
 217 bool ChromeShellDelegate::IsFirstRunAfterBoot() const {
 218   return CommandLine::ForCurrentProcess()->HasSwitch(
 219       chromeos::switches::kFirstExecAfterBoot);
 220 }
 221
 222 void ChromeShellDelegate::PreInit() {
 223   chromeos::LoadDisplayPreferences(IsFirstRunAfterBoot());
 224   // Set the observer now so that we can save the initial state
 225   // in Shell::Init.
 226   display_configuration_observer_.reset(
 227       new chromeos::DisplayConfigurationObserver());
 228 }
 229
 230 void ChromeShellDelegate::PreShutdown() {
 231   display_configuration_observer_.reset();
 232 }
 233
 234 ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
 235   return new SessionStateDelegateChromeos;
 236 }
 237
 238 ash::AccessibilityDelegate* ChromeShellDelegate::CreateAccessibilityDelegate() {
 239   return new AccessibilityDelegateImpl;
 240 }
 241
 242 ash::NewWindowDelegate* ChromeShellDelegate::CreateNewWindowDelegate() {
 243   return new ChromeNewWindowDelegateChromeos;
 244 }
 245
 246 ash::MediaDelegate* ChromeShellDelegate::CreateMediaDelegate() {
 247   return new MediaDelegateChromeOS;
 248 }
 249
 250 ash::SystemTrayDelegate* ChromeShellDelegate::CreateSystemTrayDelegate() {
 251   return chromeos::CreateSystemTrayDelegate();
 252 }
 253
 254 ash::UserWallpaperDelegate* ChromeShellDelegate::CreateUserWallpaperDelegate() {
 255   return chromeos::CreateUserWallpaperDelegate();
 256 }
 257
 258 void ChromeShellDelegate::Observe(int type,
 259                                   const content::NotificationSource& source,
 260                                   const content::NotificationDetails& details) {
 261   switch (type) {
 262     case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED: {
 263       Profile* profile = content::Details<Profile>(details).ptr();
 264       if (!chromeos::ProfileHelper::IsSigninProfile(profile) &&
 265           !profile->IsGuestSession() && !profile->IsSupervised()) {
 266         // Start the error notifier services to show auth/sync notifications.
 267         SigninErrorNotifierFactory::GetForProfile(profile);
 268         SyncErrorNotifierFactory::GetForProfile(profile);
 269       }
 270       ash::Shell::GetInstance()->OnLoginUserProfilePrepared();
 271       break;
 272     }
 273     case chrome::NOTIFICATION_SESSION_STARTED:
 274       InitAfterSessionStart();
 275       ash::Shell::GetInstance()->ShowShelf();
 276       break;
 277     default:
 278       NOTREACHED() << "Unexpected notification " << type;
 279   }
 280 }
 281
 282 void ChromeShellDelegate::PlatformInit() {
 283   registrar_.Add(this,
 284                  chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
 285                  content::NotificationService::AllSources());
 286   registrar_.Add(this,
 287                  chrome::NOTIFICATION_SESSION_STARTED,
 288                  content::NotificationService::AllSources());
 289 }