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      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 "ash/system/locale/locale_notification_controller.h"
      6 
      7 #include "ash/shell.h"
      8 #include "ash/system/system_notifier.h"
      9 #include "ash/system/tray/system_tray_notifier.h"
     10 #include "base/strings/string16.h"
     11 #include "grit/ash_resources.h"
     12 #include "grit/ash_strings.h"
     13 #include "ui/base/l10n/l10n_util.h"
     14 #include "ui/base/resource/resource_bundle.h"
     15 #include "ui/message_center/message_center.h"
     16 #include "ui/message_center/notification.h"
     17 #include "ui/message_center/notification_delegate.h"
     18 #include "ui/message_center/notification_types.h"
     19 
     20 using message_center::Notification;
     21 
     22 namespace ash {
     23 namespace {
     24 
     25 const char kLocaleChangeNotificationId[] = "chrome://settings/locale";
     26 
     27 class LocaleNotificationDelegate : public message_center::NotificationDelegate {
     28  public:
     29   explicit LocaleNotificationDelegate(LocaleObserver::Delegate* delegate);
     30 
     31  protected:
     32   virtual ~LocaleNotificationDelegate();
     33 
     34   // message_center::NotificationDelegate overrides:
     35   virtual void Display() OVERRIDE;
     36   virtual void Error() OVERRIDE;
     37   virtual void Close(bool by_user) OVERRIDE;
     38   virtual bool HasClickedListener() OVERRIDE;
     39   virtual void Click() OVERRIDE;
     40   virtual void ButtonClick(int button_index) OVERRIDE;
     41 
     42  private:
     43   LocaleObserver::Delegate* delegate_;
     44 
     45   DISALLOW_COPY_AND_ASSIGN(LocaleNotificationDelegate);
     46 };
     47 
     48 LocaleNotificationDelegate::LocaleNotificationDelegate(
     49     LocaleObserver::Delegate* delegate)
     50   : delegate_(delegate) {
     51   DCHECK(delegate_);
     52 }
     53 
     54 LocaleNotificationDelegate::~LocaleNotificationDelegate() {
     55 }
     56 
     57 void LocaleNotificationDelegate::Display() {
     58 }
     59 
     60 void LocaleNotificationDelegate::Error() {
     61 }
     62 
     63 void LocaleNotificationDelegate::Close(bool by_user) {
     64   delegate_->AcceptLocaleChange();
     65 }
     66 
     67 bool LocaleNotificationDelegate::HasClickedListener() {
     68   return true;
     69 }
     70 
     71 void LocaleNotificationDelegate::Click() {
     72   delegate_->AcceptLocaleChange();
     73 }
     74 
     75 void LocaleNotificationDelegate::ButtonClick(int button_index) {
     76   DCHECK_EQ(0, button_index);
     77   delegate_->RevertLocaleChange();
     78 }
     79 
     80 }  // namespace
     81 
     82 LocaleNotificationController::LocaleNotificationController()
     83     : delegate_(NULL) {
     84   Shell::GetInstance()->system_tray_notifier()->AddLocaleObserver(this);
     85 }
     86 
     87 LocaleNotificationController::~LocaleNotificationController() {
     88   Shell::GetInstance()->system_tray_notifier()->RemoveLocaleObserver(this);
     89 }
     90 
     91 void LocaleNotificationController::OnLocaleChanged(
     92     LocaleObserver::Delegate* delegate,
     93     const std::string& cur_locale,
     94     const std::string& from_locale,
     95     const std::string& to_locale) {
     96   if (!delegate)
     97     return;
     98 
     99   base::string16 from = l10n_util::GetDisplayNameForLocale(
    100       from_locale, cur_locale, true);
    101   base::string16 to = l10n_util::GetDisplayNameForLocale(
    102       to_locale, cur_locale, true);
    103 
    104   message_center::RichNotificationData optional;
    105   optional.buttons.push_back(message_center::ButtonInfo(
    106       l10n_util::GetStringFUTF16(
    107           IDS_ASH_STATUS_TRAY_LOCALE_REVERT_MESSAGE, from)));
    108   optional.never_timeout = true;
    109 
    110   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
    111   scoped_ptr<Notification> notification(new Notification(
    112       message_center::NOTIFICATION_TYPE_SIMPLE,
    113       kLocaleChangeNotificationId,
    114       base::string16()  /* title */,
    115       l10n_util::GetStringFUTF16(
    116           IDS_ASH_STATUS_TRAY_LOCALE_CHANGE_MESSAGE, from, to),
    117       bundle.GetImageNamed(IDR_AURA_UBER_TRAY_LOCALE),
    118       base::string16()  /* display_source */,
    119       message_center::NotifierId(
    120           message_center::NotifierId::SYSTEM_COMPONENT,
    121           system_notifier::kNotifierLocale),
    122       optional,
    123       new LocaleNotificationDelegate(delegate)));
    124   message_center::MessageCenter::Get()->AddNotification(notification.Pass());
    125 }
    126 
    127 }  // namespace ash
    128