/*! Copyright (c) 2010 Brandon Aaron (http://brandonaaron.net)
* Licensed under the MIT License (LICENSE.txt).
*
* Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
* Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
* Thanks to: Seamus Leahy for adding deltaX and deltaY
*
* Version: 3.0.4
* 
* Requires: 1.2.2+
*/

(function ($) {

    var types = ['DOMMouseScroll', 'mousewheel'];

    $.event.special.mousewheel = {
        setup: function () {
            if (this.addEventListener) {
                for (var i = types.length; i; ) {
                    this.addEventListener(types[--i], handler, false);
                }
            } else {
                this.onmousewheel = handler;
            }
        },

        teardown: function () {
            if (this.removeEventListener) {
                for (var i = types.length; i; ) {
                    this.removeEventListener(types[--i], handler, false);
                }
            } else {
                this.onmousewheel = null;
            }
        }
    };

    $.fn.extend({
        mousewheel: function (fn) {
            return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
        },

        unmousewheel: function (fn) {
            return this.unbind("mousewheel", fn);
        }
    });


    function handler(event) {
        var orgEvent = event || window.event, args = [].slice.call(arguments, 1), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
        event = $.event.fix(orgEvent);
        event.type = "mousewheel";

        // Old school scrollwheel delta
        if (event.wheelDelta) { delta = event.wheelDelta / 120; }
        if (event.detail) { delta = -event.detail / 3; }

        // New school multidimensional scroll (touchpads) deltas
        deltaY = delta;

        // Gecko
        if (orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS) {
            deltaY = 0;
            deltaX = -1 * delta;
        }

        // Webkit
        if (orgEvent.wheelDeltaY !== undefined) { deltaY = orgEvent.wheelDeltaY / 120; }
        if (orgEvent.wheelDeltaX !== undefined) { deltaX = -1 * orgEvent.wheelDeltaX / 120; }

        // Add event and delta to the front of the arguments
        args.unshift(event, delta, deltaX, deltaY);

        return $.event.handle.apply(this, args);
    }

})(jQuery);



/**
* @author trixta
* @version 1.2
*/
(function ($) {

    var mwheelI = {
        pos: [-260, -260]
    },
	minDif = 3,
	doc = document,
	root = doc.documentElement,
	body = doc.body,
	longDelay, shortDelay
;

    function unsetPos() {
        if (this === mwheelI.elem) {
            mwheelI.pos = [-260, -260];
            mwheelI.elem = false;
            minDif = 3;
        }
    }

    $.event.special.mwheelIntent = {
        setup: function () {
            var jElm = $(this).bind('mousewheel', $.event.special.mwheelIntent.handler);
            if (this !== doc && this !== root && this !== body) {
                jElm.bind('mouseleave', unsetPos);
            }
            jElm = null;
            return true;
        },
        teardown: function () {
            $(this)
			.unbind('mousewheel', $.event.special.mwheelIntent.handler)
			.unbind('mouseleave', unsetPos)
		;
            return true;
        },
        handler: function (e, d) {
            var pos = [e.clientX, e.clientY];
            if (this === mwheelI.elem || Math.abs(mwheelI.pos[0] - pos[0]) > minDif || Math.abs(mwheelI.pos[1] - pos[1]) > minDif) {
                mwheelI.elem = this;
                mwheelI.pos = pos;
                minDif = 250;

                clearTimeout(shortDelay);
                shortDelay = setTimeout(function () {
                    minDif = 10;
                }, 200);
                clearTimeout(longDelay);
                longDelay = setTimeout(function () {
                    minDif = 3;
                }, 1500);
                e = $.extend({}, e, { type: 'mwheelIntent' });
                return $.event.handle.apply(this, arguments);
            }
        }
    };
    $.fn.extend({
        mwheelIntent: function (fn) {
            return fn ? this.bind("mwheelIntent", fn) : this.trigger("mwheelIntent");
        },

        unmwheelIntent: function (fn) {
            return this.unbind("mwheelIntent", fn);
        }
    });

    $(function () {
        body = doc.body;
        //assume that document is always scrollable, doesn't hurt if not
        $(doc).bind('mwheelIntent.mwheelIntentDefault', $.noop);
    });
})(jQuery);