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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 "chrome/browser/notifications/screen_lock_notification_blocker.h"
      6 
      7 #include "base/time/time.h"
      8 #include "chrome/browser/idle.h"
      9 
     10 namespace {
     11 const int kUserStatePollingIntervalSeconds = 1;
     12 }
     13 
     14 ScreenLockNotificationBlocker::ScreenLockNotificationBlocker(
     15     message_center::MessageCenter* message_center)
     16     : NotificationBlocker(message_center),
     17       is_locked_(false) {
     18 }
     19 
     20 ScreenLockNotificationBlocker::~ScreenLockNotificationBlocker() {
     21 }
     22 
     23 void ScreenLockNotificationBlocker::CheckState() {
     24   bool was_locked = is_locked_;
     25   is_locked_ = CheckIdleStateIsLocked();
     26   if (is_locked_ != was_locked)
     27     NotifyBlockingStateChanged();
     28 
     29   if (is_locked_) {
     30     timer_.Start(FROM_HERE,
     31                  base::TimeDelta::FromSeconds(kUserStatePollingIntervalSeconds),
     32                  this,
     33                  &ScreenLockNotificationBlocker::CheckState);
     34   }
     35 }
     36 
     37 bool ScreenLockNotificationBlocker::ShouldShowNotificationAsPopup(
     38     const message_center::NotifierId& notifier_id) const {
     39   return !is_locked_;
     40 }
     41