1 // Copyright 2014 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/chromeos/idle_detector.h" 6 7 #include "ash/shell.h" 8 #include "base/bind.h" 9 #include "base/logging.h" 10 #include "ui/wm/core/user_activity_detector.h" 11 12 namespace chromeos { 13 14 IdleDetector::IdleDetector(const base::Closure& on_active_callback, 15 const base::Closure& on_idle_callback) 16 : active_callback_(on_active_callback), idle_callback_(on_idle_callback) {} 17 18 IdleDetector::~IdleDetector() { 19 if (ash::Shell::HasInstance() && 20 ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) 21 ash::Shell::GetInstance()->user_activity_detector()->RemoveObserver(this); 22 } 23 24 void IdleDetector::OnUserActivity(const ui::Event* event) { 25 if (!active_callback_.is_null()) 26 active_callback_.Run(); 27 ResetTimer(); 28 } 29 30 void IdleDetector::Start(const base::TimeDelta& timeout) { 31 timeout_ = timeout; 32 if (!ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) 33 ash::Shell::GetInstance()->user_activity_detector()->AddObserver(this); 34 ResetTimer(); 35 } 36 37 void IdleDetector::ResetTimer() { 38 if (timer_.IsRunning()) 39 timer_.Reset(); 40 else 41 timer_.Start(FROM_HERE, timeout_, idle_callback_); 42 } 43 44 } // namespace chromeos 45