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// Copyright (c) 2012 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.
/**
* @fileoverview
* Class to detect when the device is suspended, for example when a laptop's
* lid is closed.
*/
'use strict';
/** @suppress {duplicate} */
var remoting = remoting || {};
/**
* @param {function():void} callback Callback function to invoke when a
* suspend+resume operation has been detected.
*
* @constructor
*/
remoting.SuspendMonitor = function (callback) {
/** @type {function():void} @private */
this.callback_ = callback;
/** @type {number} @private */
this.timerIntervalMs_ = 60 * 1000;
/** @type {number} @private */
this.lateToleranceMs_ = 60 * 1000;
/** @type {number} @private */
this.callbackExpectedTime_ = 0;
this.start_();
};
/** @private */
remoting.SuspendMonitor.prototype.start_ = function() {
window.setTimeout(this.checkSuspend_.bind(this), this.timerIntervalMs_);
this.callbackExpectedTime_ = new Date().getTime() + this.timerIntervalMs_;
};
/** @private */
remoting.SuspendMonitor.prototype.checkSuspend_ = function() {
var lateByMs = new Date().getTime() - this.callbackExpectedTime_;
if (lateByMs > this.lateToleranceMs_) {
this.callback_();
}
this.start_();
};
/** @type {remoting.SuspendMonitor?} */
remoting.suspendMonitor = null;
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