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/*!
* jQuery idleTimer plugin
* version 0.9.100511
* by Paul Irish. 
*   http://github.com/paulirish/yui-misc/tree/
* MIT license
 
* adapted from YUI idle timer by nzakas:
*   http://github.com/nzakas/yui-misc/
*/
/*
* Copyright (c) 2009 Nicholas C. Zakas
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/


// API available in <= v0.8
/*******************************
 
// idleTimer() takes an optional argument that defines the idle timeout
// timeout is in milliseconds; defaults to 30000
$.idleTimer(10000);


$(document).bind("idle.idleTimer", function(){
// function you want to fire when the user goes idle
});


$(document).bind("active.idleTimer", function(){
// function you want to fire when the user becomes active again
});

// pass the string 'destroy' to stop the timer
$.idleTimer('destroy');
 
// you can query if the user is idle or not with data()
$.data(document,'idleTimer');  // 'idle'  or 'active'

// you can get time elapsed since user when idle/active
$.idleTimer('getElapsedTime'); // time since state change in ms
 
********/



// API available in >= v0.9
/*************************
 
// bind to specific elements, allows for multiple timer instances
$(elem).idleTimer(timeout|'destroy'|'getElapsedTime');
$.data(elem,'idleTimer');  // 'idle'  or 'active'
 
// if you're using the old $.idleTimer api, you should not do $(document).idleTimer(...)
 
// element bound timers will only watch for events inside of them.
// you may just want page-level activity, in which case you may set up
//   your timers on document, document.documentElement, and document.body
 
 
********/

(function ($) {

    $.idleTimer = function (newTimeout, elem) {

        // defaults that are to be stored as instance props on the elem

        var idle = false,        //indicates if the user is idle
        enabled = true,        //indicates if the idle timer is enabled
        timeout = 30000,        //the amount of time (ms) before the user is considered idle
        events = 'mousemove keydown DOMMouseScroll mousewheel mousedown'; // activity is one of these events


        elem = elem || document;



        /* (intentionally not documented)
        * Toggles the idle state and fires an appropriate event.
        * @return {void}
        */
        var toggleIdleState = function (myelem) {

            // curse you, mozilla setTimeout lateness bug!
            if (typeof myelem == 'number') myelem = undefined;

            var obj = $.data(myelem || elem, 'idleTimerObj');

            //toggle the state
            obj.idle = !obj.idle;

            // reset timeout counter
            obj.olddate = +new Date;

            //fire appropriate event

            // create a custom event, but first, store the new state on the element
            // and then append that string to a namespace
            var event = jQuery.Event($.data(elem, 'idleTimer', obj.idle ? "idle" : "active") + '.idleTimer');

            // we dont want this to bubble
            event.stopPropagation();
            $(elem).trigger(event);
        },

        /**
        * Stops the idle timer. This removes appropriate event handlers
        * and cancels any pending timeouts.
        * @return {void}
        * @method stop
        * @static
        */
    stop = function (elem) {

        var obj = $.data(elem, 'idleTimerObj');

        //set to disabled
        obj.enabled = false;

        //clear any pending timeouts
        clearTimeout(obj.tId);

        //detach the event handlers
        $(elem).unbind('.idleTimer');
    },


        /* (intentionally not documented)
        * Handles a user event indicating that the user isn't idle.
        * @param {Event} event A DOM2-normalized event object.
        * @return {void}
        */
    handleUserEvent = function () {

        var obj = $.data(this, 'idleTimerObj');

        //clear any existing timeout
        clearTimeout(obj.tId);



        //if the idle timer is enabled
        if (obj.enabled) {


            //if it's idle, that means the user is no longer idle
            if (obj.idle) {
                toggleIdleState(this);
            }

            //set a new timeout
            obj.tId = setTimeout(toggleIdleState, obj.timeout);

        }
    };


        /**
        * Starts the idle timer. This adds appropriate event handlers
        * and starts the first timeout.
        * @param {int} newTimeout (Optional) A new value for the timeout period in ms.
        * @return {void}
        * @method $.idleTimer
        * @static
        */


        var obj = $.data(elem, 'idleTimerObj') || new function () { };

        obj.olddate = obj.olddate || +new Date;

        //assign a new timeout if necessary
        if (typeof newTimeout == "number") {
            timeout = newTimeout;
        } else if (newTimeout === 'destroy') {
            stop(elem);
            return this;
        } else if (newTimeout === 'getElapsedTime') {
            return (+new Date) - obj.olddate;
        }

        //assign appropriate event handlers
        $(elem).bind($.trim((events + ' ').split(' ').join('.idleTimer ')), handleUserEvent);


        obj.idle = idle;
        obj.enabled = enabled;
        obj.timeout = timeout;


        //set a timeout to toggle state
        obj.tId = setTimeout(toggleIdleState, obj.timeout);

        // assume the user is active for the first x seconds.
        $.data(elem, 'idleTimer', "active");

        // store our instance on the object
        $.data(elem, 'idleTimerObj', obj);



    }; // end of $.idleTimer()


    // v0.9 API for defining multiple timers.
    $.fn.idleTimer = function (newTimeout) {

        this[0] && $.idleTimer(newTimeout, this[0]);

        return this;
    }


})(jQuery);

(function ($) {
    $.fn.hoverIntent = function (f, g) {
        // default configuration options
        var cfg = {
            sensitivity: 7,
            interval: 100,
            timeout: 0
        };
        // override configuration options with user supplied object
        cfg = $.extend(cfg, g ? { over: f, out: g} : f);

        // instantiate variables
        // cX, cY = current X and Y position of mouse, updated by mousemove event
        // pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
        var cX, cY, pX, pY;

        // A private function for getting mouse position
        var track = function (ev) {
            cX = ev.pageX;
            cY = ev.pageY;
        };

        // A private function for comparing current and previous mouse position
        var compare = function (ev, ob) {
            ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
            // compare mouse positions to see if they've crossed the threshold
            if ((Math.abs(pX - cX) + Math.abs(pY - cY)) < cfg.sensitivity) {
                $(ob).unbind("mousemove", track);
                // set hoverIntent state to true (so mouseOut can be called)
                ob.hoverIntent_s = 1;
                return cfg.over.apply(ob, [ev]);
            } else {
                // set previous coordinates for next time
                pX = cX; pY = cY;
                // use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
                ob.hoverIntent_t = setTimeout(function () { compare(ev, ob); }, cfg.interval);
            }
        };

        // A private function for delaying the mouseOut function
        var delay = function (ev, ob) {
            ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
            ob.hoverIntent_s = 0;
            return cfg.out.apply(ob, [ev]);
        };

        // A private function for handling mouse 'hovering'
        var handleHover = function (e) {
            // copy objects to be passed into t (required for event object to be passed in IE)
            var ev = jQuery.extend({}, e);
            var ob = this;

            // cancel hoverIntent timer if it exists
            if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }

            // if e.type == "mouseenter"
            if (e.type == "mouseenter") {
                // set "previous" X and Y position based on initial entry point
                pX = ev.pageX; pY = ev.pageY;
                // update "current" X and Y position based on mousemove
                $(ob).bind("mousemove", track);
                // start polling interval (self-calling timeout) to compare mouse coordinates over time
                if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout(function () { compare(ev, ob); }, cfg.interval); }

                // else e.type == "mouseleave"
            } else {
                // unbind expensive mousemove event
                $(ob).unbind("mousemove", track);
                // if hoverIntent state is true, then call the mouseOut function after the specified delay
                if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout(function () { delay(ev, ob); }, cfg.timeout); }
            }
        };

        // bind the function to the two event listeners
        return this.bind('mouseenter', handleHover).bind('mouseleave', handleHover);
    };
})(jQuery);


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