/*!
 * jQuery UI Effects Bounce - 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/bounce-effect/
 *
 * Depends:
 *	jquery.ui.effect.js
 */
define([
    'jquery',
    'jquery-ui-modules/effect'
], function ($, undefined) {

    $.effects.effect.bounce = function (o, done) {
        var el = $(this),
            props = ["position", "top", "bottom", "left", "right", "height", "width"],

            // defaults:
            mode = $.effects.setMode(el, o.mode || "effect"),
            hide = mode === "hide",
            show = mode === "show",
            direction = o.direction || "up",
            distance = o.distance,
            times = o.times || 5,

            // number of internal animations
            anims = times * 2 + (show || hide ? 1 : 0),
            speed = o.duration / anims,
            easing = o.easing,

            // utility:
            ref = (direction === "up" || direction === "down") ? "top" : "left",
            motion = (direction === "up" || direction === "left"),
            i,
            upAnim,
            downAnim,

            // we will need to re-assemble the queue to stack our animations in place
            queue = el.queue(),
            queuelen = queue.length;

        // Avoid touching opacity to prevent clearType and PNG issues in IE
        if (show || hide) {
            props.push("opacity");
        }

        $.effects.save(el, props);
        el.show();
        $.effects.createWrapper(el); // Create Wrapper

        // default distance for the BIGGEST bounce is the outer Distance / 3
        if (!distance) {
            distance = el[ref === "top" ? "outerHeight" : "outerWidth"]() / 3;
        }

        if (show) {
            downAnim = {opacity: 1};
            downAnim[ref] = 0;

            // if we are showing, force opacity 0 and set the initial position
            // then do the "first" animation
            el.css("opacity", 0)
                .css(ref, motion ? -distance * 2 : distance * 2)
                .animate(downAnim, speed, easing);
        }

        // start at the smallest distance if we are hiding
        if (hide) {
            distance = distance / Math.pow(2, times - 1);
        }

        downAnim = {};
        downAnim[ref] = 0;
        // Bounces up/down/left/right then back to 0 -- times * 2 animations happen here
        for (i = 0; i < times; i++) {
            upAnim = {};
            upAnim[ref] = (motion ? "-=" : "+=") + distance;

            el.animate(upAnim, speed, easing)
                .animate(downAnim, speed, easing);

            distance = hide ? distance * 2 : distance / 2;
        }

        // Last Bounce when Hiding
        if (hide) {
            upAnim = {opacity: 0};
            upAnim[ref] = (motion ? "-=" : "+=") + distance;

            el.animate(upAnim, speed, easing);
        }

        el.queue(function () {
            if (hide) {
                el.hide();
            }
            $.effects.restore(el, props);
            $.effects.removeWrapper(el);
            done();
        });

        // inject all the animations we just queued to be first in line (after "inprogress")
        if (queuelen > 1) {
            queue.splice.apply(queue,
                [1, 0].concat(queue.splice(queuelen, anims + 1)));
        }
        el.dequeue();

    };

});
