src/chrome/browser/notifications/screen_lock_notification_blocker.h

   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 #ifndef CHROME_BROWSER_NOTIFICATIONS_SCREEN_LOCK_NOTIFICATION_BLOCKER_H_
   6 #define CHROME_BROWSER_NOTIFICATIONS_SCREEN_LOCK_NOTIFICATION_BLOCKER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/observer_list.h"
  10 #include "base/timer/timer.h"
  11 #include "ui/message_center/notification_blocker.h"
  12
  13 // A notification blocker which checks the screen lock state constantly.
  14 class ScreenLockNotificationBlocker
  15     : public message_center::NotificationBlocker {
  16  public:
  17   explicit ScreenLockNotificationBlocker(
  18       message_center::MessageCenter* message_center);
  19   ~ScreenLockNotificationBlocker() override;
  20
  21   bool is_locked() const { return is_locked_; }
  22
  23   // message_center::NotificationBlocker overrides:
  24   void CheckState() override;
  25   bool ShouldShowNotificationAsPopup(
  26       const message_center::NotifierId& notifier_id) const override;
  27
  28  private:
  29   bool is_locked_;
  30
  31   base::OneShotTimer<ScreenLockNotificationBlocker> timer_;
  32
  33   DISALLOW_COPY_AND_ASSIGN(ScreenLockNotificationBlocker);
  34 };
  35
  36 #endif  // CHROME_BROWSER_NOTIFICATIONS_SCREEN_LOCK_NOTIFICATION_BLOCKER_H_