chrome/browser/ui/ash/chrome_shell_delegate

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This source file includes following definitions.
InitAfterSessionStart
ToggleHighContrast
IsSpokenFeedbackEnabled
ToggleSpokenFeedback
IsHighContrastEnabled
SetMagnifierEnabled
SetMagnifierType
IsMagnifierEnabled
GetMagnifierType
SetLargeCursorEnabled
IsLargeCursorEnabled
SetAutoclickEnabled
IsAutoclickEnabled
SetVirtualKeyboardEnabled
IsVirtualKeyboardEnabled
ShouldShowAccessibilityMenu
IsBrailleDisplayConnected
SilenceSpokenFeedback
SaveScreenMagnifierScale
GetSavedScreenMagnifierScale
TriggerAccessibilityAlert
GetLastAccessibilityAlert
PlayShutdownSound
HandleMediaNextTrack
HandleMediaPlayPause
HandleMediaPrevTrack
IsFirstRunAfterBoot
PreInit
PreShutdown
CreateSessionStateDelegate
CreateAccessibilityDelegate
CreateNewWindowDelegate
CreateMediaDelegate
CreateSystemTrayDelegate
CreateUserWallpaperDelegate
Observe
PlatformInit
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/ash/chrome_shell_delegate.h"

#include "ash/accelerators/magnifier_key_scroller.h"
#include "ash/accelerators/spoken_feedback_toggler.h"
#include "ash/accessibility_delegate.h"
#include "ash/media_delegate.h"
#include "ash/wm/mru_window_tracker.h"
#include "ash/wm/window_util.h"
#include "base/command_line.h"
#include "base/prefs/pref_service.h"
#include "chrome/browser/accessibility/accessibility_events.h"
#include "chrome/browser/app_mode/app_mode_utils.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#include "chrome/browser/chromeos/accessibility/magnification_manager.h"
#include "chrome/browser/chromeos/background/ash_user_wallpaper_delegate.h"
#include "chrome/browser/chromeos/display/display_configuration_observer.h"
#include "chrome/browser/chromeos/display/display_preferences.h"
#include "chrome/browser/chromeos/extensions/media_player_api.h"
#include "chrome/browser/chromeos/extensions/media_player_event_router.h"
#include "chrome/browser/chromeos/profiles/profile_helper.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/signin/signin_error_notifier_factory_ash.h"
#include "chrome/browser/speech/tts_controller.h"
#include "chrome/browser/sync/sync_error_notifier_factory_ash.h"
#include "chrome/browser/ui/ash/chrome_new_window_delegate_chromeos.h"
#include "chrome/browser/ui/ash/session_state_delegate_chromeos.h"
#include "chrome/browser/ui/ash/system_tray_delegate_chromeos.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/common/pref_names.h"
#include "chromeos/chromeos_switches.h"
#include "chromeos/ime/input_method_manager.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/user_metrics.h"
#include "grit/generated_resources.h"
#include "ui/aura/window.h"
#include "ui/base/l10n/l10n_util.h"

namespace {

void InitAfterSessionStart() {
  // Restore focus after the user session is started.  It's needed because some
  // windows can be opened in background while login UI is still active because
  // we currently restore browser windows before login UI is deleted.
  ash::Shell* shell = ash::Shell::GetInstance();
  ash::MruWindowTracker::WindowList mru_list =
      shell->mru_window_tracker()->BuildMruWindowList();
  if (!mru_list.empty())
    mru_list.front()->Focus();

  // Enable magnifier scroll keys as there may be no mouse cursor in kiosk mode.
  ash::MagnifierKeyScroller::SetEnabled(chrome::IsRunningInForcedAppMode());

  // Enable long press action to toggle spoken feedback with hotrod
  // remote which can't handle shortcut.
  ash::SpokenFeedbackToggler::SetEnabled(chrome::IsRunningInForcedAppMode());
}

class AccessibilityDelegateImpl : public ash::AccessibilityDelegate {
 public:
  AccessibilityDelegateImpl() {}
  virtual ~AccessibilityDelegateImpl() {}

  virtual void ToggleHighContrast() OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    chromeos::AccessibilityManager::Get()->EnableHighContrast(
        !chromeos::AccessibilityManager::Get()->IsHighContrastEnabled());
  }

  virtual bool IsSpokenFeedbackEnabled() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsSpokenFeedbackEnabled();
  }

  virtual void ToggleSpokenFeedback(
      ash::AccessibilityNotificationVisibility notify) OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    chromeos::AccessibilityManager::Get()->ToggleSpokenFeedback(notify);
  }

  virtual bool IsHighContrastEnabled() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsHighContrastEnabled();
  }

  virtual void SetMagnifierEnabled(bool enabled) OVERRIDE {
    DCHECK(chromeos::MagnificationManager::Get());
    return chromeos::MagnificationManager::Get()->SetMagnifierEnabled(enabled);
  }

  virtual void SetMagnifierType(ash::MagnifierType type) OVERRIDE {
    DCHECK(chromeos::MagnificationManager::Get());
    return chromeos::MagnificationManager::Get()->SetMagnifierType(type);
  }

  virtual bool IsMagnifierEnabled() const OVERRIDE {
    DCHECK(chromeos::MagnificationManager::Get());
    return chromeos::MagnificationManager::Get()->IsMagnifierEnabled();
  }

  virtual ash::MagnifierType GetMagnifierType() const OVERRIDE {
    DCHECK(chromeos::MagnificationManager::Get());
    return chromeos::MagnificationManager::Get()->GetMagnifierType();
  }

  virtual void SetLargeCursorEnabled(bool enabled) OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->EnableLargeCursor(enabled);
  }

  virtual bool IsLargeCursorEnabled() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsLargeCursorEnabled();
  }

  virtual void SetAutoclickEnabled(bool enabled) OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->EnableAutoclick(enabled);
  }

  virtual bool IsAutoclickEnabled() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsAutoclickEnabled();
  }

  virtual void SetVirtualKeyboardEnabled(bool enabled) OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->
        EnableVirtualKeyboard(enabled);
  }

  virtual bool IsVirtualKeyboardEnabled() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsVirtualKeyboardEnabled();
  }

  virtual bool ShouldShowAccessibilityMenu() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->
        ShouldShowAccessibilityMenu();
  }

  virtual bool IsBrailleDisplayConnected() const OVERRIDE {
    DCHECK(chromeos::AccessibilityManager::Get());
    return chromeos::AccessibilityManager::Get()->IsBrailleDisplayConnected();
  }

  virtual void SilenceSpokenFeedback() const OVERRIDE {
    TtsController::GetInstance()->Stop();
  }

  virtual void SaveScreenMagnifierScale(double scale) OVERRIDE {
    if (chromeos::MagnificationManager::Get())
      chromeos::MagnificationManager::Get()->SaveScreenMagnifierScale(scale);
  }

  virtual double GetSavedScreenMagnifierScale() OVERRIDE {
    if (chromeos::MagnificationManager::Get()) {
      return chromeos::MagnificationManager::Get()->
          GetSavedScreenMagnifierScale();
    }
    return std::numeric_limits<double>::min();
  }

  virtual void TriggerAccessibilityAlert(
      ash::AccessibilityAlert alert) OVERRIDE {
    Profile* profile = ProfileManager::GetActiveUserProfile();
    if (profile) {
      switch (alert) {
        case ash::A11Y_ALERT_WINDOW_NEEDED: {
          AccessibilityAlertInfo event(
              profile, l10n_util::GetStringUTF8(IDS_A11Y_ALERT_WINDOW_NEEDED));
          SendControlAccessibilityNotification(
              ui::AX_EVENT_ALERT, &event);
          break;
        }
        case ash::A11Y_ALERT_NONE:
          break;
      }
    }
  }

  virtual ash::AccessibilityAlert GetLastAccessibilityAlert() OVERRIDE {
    return ash::A11Y_ALERT_NONE;
  }

  virtual base::TimeDelta PlayShutdownSound() const OVERRIDE {
    return chromeos::AccessibilityManager::Get()->PlayShutdownSound();
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(AccessibilityDelegateImpl);
};

class MediaDelegateImpl : public ash::MediaDelegate {
 public:
  MediaDelegateImpl() {}
  virtual ~MediaDelegateImpl() {}

  virtual void HandleMediaNextTrack() OVERRIDE {
    extensions::MediaPlayerAPI::Get(
        ProfileManager::GetActiveUserProfile())->
            media_player_event_router()->NotifyNextTrack();
  }

  virtual void HandleMediaPlayPause() OVERRIDE {
    extensions::MediaPlayerAPI::Get(
        ProfileManager::GetActiveUserProfile())->
            media_player_event_router()->NotifyTogglePlayState();
  }

  virtual void HandleMediaPrevTrack() OVERRIDE {
    extensions::MediaPlayerAPI::Get(
        ProfileManager::GetActiveUserProfile())->
            media_player_event_router()->NotifyPrevTrack();
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(MediaDelegateImpl);
};

}  // anonymous namespace

bool ChromeShellDelegate::IsFirstRunAfterBoot() const {
  return CommandLine::ForCurrentProcess()->HasSwitch(
      chromeos::switches::kFirstExecAfterBoot);
}

void ChromeShellDelegate::PreInit() {
  chromeos::LoadDisplayPreferences(IsFirstRunAfterBoot());
  // Set the observer now so that we can save the initial state
  // in Shell::Init.
  display_configuration_observer_.reset(
      new chromeos::DisplayConfigurationObserver());
}

void ChromeShellDelegate::PreShutdown() {
  display_configuration_observer_.reset();
}

ash::SessionStateDelegate* ChromeShellDelegate::CreateSessionStateDelegate() {
  return new SessionStateDelegateChromeos;
}

ash::AccessibilityDelegate* ChromeShellDelegate::CreateAccessibilityDelegate() {
  return new AccessibilityDelegateImpl;
}

ash::NewWindowDelegate* ChromeShellDelegate::CreateNewWindowDelegate() {
  return new ChromeNewWindowDelegateChromeos;
}

ash::MediaDelegate* ChromeShellDelegate::CreateMediaDelegate() {
  return new MediaDelegateImpl;
}

ash::SystemTrayDelegate* ChromeShellDelegate::CreateSystemTrayDelegate() {
  return chromeos::CreateSystemTrayDelegate();
}

ash::UserWallpaperDelegate* ChromeShellDelegate::CreateUserWallpaperDelegate() {
  return chromeos::CreateUserWallpaperDelegate();
}

void ChromeShellDelegate::Observe(int type,
                                  const content::NotificationSource& source,
                                  const content::NotificationDetails& details) {
  switch (type) {
    case chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED: {
      Profile* profile = content::Details<Profile>(details).ptr();
      if (!chromeos::ProfileHelper::IsSigninProfile(profile) &&
          !profile->IsGuestSession() && !profile->IsManaged()) {
        // Start the error notifier services to show auth/sync notifications.
        SigninErrorNotifierFactory::GetForProfile(profile);
        SyncErrorNotifierFactory::GetForProfile(profile);
      }
      ash::Shell::GetInstance()->OnLoginUserProfilePrepared();
      break;
    }
    case chrome::NOTIFICATION_SESSION_STARTED:
      InitAfterSessionStart();
      ash::Shell::GetInstance()->ShowShelf();
      break;
    default:
      NOTREACHED() << "Unexpected notification " << type;
  }
}

void ChromeShellDelegate::PlatformInit() {
  registrar_.Add(this,
                 chrome::NOTIFICATION_LOGIN_USER_PROFILE_PREPARED,
                 content::NotificationService::AllSources());
  registrar_.Add(this,
                 chrome::NOTIFICATION_SESSION_STARTED,
                 content::NotificationService::AllSources());
}
/* [<][>][^][v][top][bottom][index][help] */
root/chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc

DEFINITIONS
