/*!
 * jQuery UI Effects Fold - v1.10.4
 * http://jqueryui.com
 *
 * Copyright 2014 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/fold-effect/
 */

define([
    'jquery',
    'jquery-ui-modules/effect'
], function ($, undefined) {

    $.effects.effect.fold = function (o, done) {

        // Create element
        var el = $(this),
            props = ["position", "top", "bottom", "left", "right", "height", "width"],
            mode = $.effects.setMode(el, o.mode || "hide"),
            show = mode === "show",
            hide = mode === "hide",
            size = o.size || 15,
            percent = /([0-9]+)%/.exec(size),
            horizFirst = !!o.horizFirst,
            widthFirst = show !== horizFirst,
            ref = widthFirst ? ["width", "height"] : ["height", "width"],
            duration = o.duration / 2,
            wrapper, distance,
            animation1 = {},
            animation2 = {};

        $.effects.save(el, props);
        el.show();

        // Create Wrapper
        wrapper = $.effects.createWrapper(el).css({
            overflow: "hidden"
        });
        distance = widthFirst ?
            [wrapper.width(), wrapper.height()] :
            [wrapper.height(), wrapper.width()];

        if (percent) {
            size = parseInt(percent[1], 10) / 100 * distance[hide ? 0 : 1];
        }
        if (show) {
            wrapper.css(horizFirst ? {
                height: 0,
                width: size
            } : {
                height: size,
                width: 0
            });
        }

        // Animation
        animation1[ref[0]] = show ? distance[0] : size;
        animation2[ref[1]] = show ? distance[1] : 0;

        // Animate
        wrapper
            .animate(animation1, duration, o.easing)
            .animate(animation2, duration, o.easing, function () {
                if (hide) {
                    el.hide();
                }
                $.effects.restore(el, props);
                $.effects.removeWrapper(el);
                done();
            });
    };

});