JavaScript Inactivity Callback

gistfile1.js

/// <reference path="jquery-1.8.2.js" />
/// <reference path="Timer.js" />

InactivityPoll = function (inactiveFn, inactiveDelay, confirmStartedFn, confirmFn, confirmDelay, intervalFn, interval, debug) {
    /// <param name="inactiveFn" type="Function">Function to call when the inactivityDelay time has been passed</param>
    /// <param name="inactiveDelay" type="Number">Amount of time to wait before calling the inactiveFn</param>
    /// <param name="confirmStartedFn" type="Function">Function to call when the when the confirmDely starts counting down</param>
    /// <param name="confirmFn" type="Function">Function to call when the confirmDelay time has been passed</param>
    /// <param name="confirmDelay" type="Number">Amount of time to wait before calling the confirmFn</param>
    /// <param name="intervalFn" type="Function">Function to run after the interval specified in the interval parameter</param>
    /// <param name="interval" type="Number">Amount of time to run the intervalFn function (frequency)</param>
    /// <param name="debug" type="Boolean">Turns debugging on - console messages will display</param>

    var _self = this,
        _intervalFn = intervalFn,
        _interval = interval,
        _debug = debug,
        _hasConsole = window.console && window.console.log,
        _logFn = function (message) {
            if (_debug && _hasConsole) {
                console.log(message);
            }
        },
        _inactiveFn = inactiveFn,
        _inactiveDelay = inactiveDelay,
        _confirmStartedFn = confirmStartedFn,
        _confirmFn = confirmFn,
        _confirmDelay = confirmDelay,
        _activity = false,
        _inactiveFnCalled = false,
        _keepaliveFn = function (e) {
            var me = e.data;
            //console.log('keepalive');
            _activity = true;
        },
        _listenFn = function () {
            $('html')
                .off('.inactivitypoll')
                .on('mousemove.inactivitypoll keypress.inactivitypoll', this, _keepaliveFn)
        };

    var _confirmFnWrapper = function () {
        _logFn('InactivityPoll - confirmFnWrapper: calling confirmFn');
        _confirmFn();
    };

    var _timers = {
        CONFIRM: new Timer(_confirmFnWrapper, _confirmDelay, _intervalFn, _interval)
    };

    var _inactiveFnWrapper = function () {
        _inactiveFnCalled = true;
        _logFn('InactivityPoll - inactiveFnWrapper: calling inactiveFn');
        _inactiveFn();
        _confirmStartedFn();
        _timers.CONFIRM.Start();
        _logFn('InactivityPoll - inactiveFnWrapper: started confirm timer');
    };

    var _activityPollFn = function () {
        _logFn('InactivityPoll - activityPollFn');
        // if there is no activity and _inactiveFnCalled is false then call the _inactiveFnWrapper
        if (!_activity & !_inactiveFnCalled) {
            _logFn('InactivityPoll - activityPollFn: no activity, inactivityFn not called');
            _inactiveFnWrapper();
        }
        // set the activity to false
        _activity = false;

        // restart the inactive timer
        _timers.INACTIVE.Restart();
        _logFn('InactivityPoll - activityPollFn: restarted inactivity timer');
    };

    _timers.INACTIVE = new Timer(_activityPollFn, _inactiveDelay);

    _self.Start = function () {
        _logFn('InactivityPoll - Start');
        _listenFn();
        _timers.INACTIVE.Start();
    };

    _self.Reset = function () {
        _logFn('InactivityPoll - Reset');
        _timers.CONFIRM.Stop();
        _timers.INACTIVE.Stop();
        _activity = false;
        _inactiveFnCalled = false;
        _self.Start();
    };

};