/*!
 * jQuery UI Effects Pulsate - 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/pulsate-effect/
 */

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

    $.effects.effect.pulsate = function (o, done) {
        var elem = $(this),
            mode = $.effects.setMode(elem, o.mode || "show"),
            show = mode === "show",
            hide = mode === "hide",
            showhide = (show || mode === "hide"),

            // showing or hiding leaves of the "last" animation
            anims = ((o.times || 5) * 2) + (showhide ? 1 : 0),
            duration = o.duration / anims,
            animateTo = 0,
            queue = elem.queue(),
            queuelen = queue.length,
            i;

        if (show || !elem.is(":visible")) {
            elem.css("opacity", 0).show();
            animateTo = 1;
        }

        // anims - 1 opacity "toggles"
        for (i = 1; i < anims; i++) {
            elem.animate({
                opacity: animateTo
            }, duration, o.easing);
            animateTo = 1 - animateTo;
        }

        elem.animate({
            opacity: animateTo
        }, duration, o.easing);

        elem.queue(function () {
            if (hide) {
                elem.hide();
            }
            done();
        });

        // We just queued up "anims" animations, we need to put them next in the queue
        if (queuelen > 1) {
            queue.splice.apply(queue,
                [1, 0].concat(queue.splice(queuelen, anims + 1)));
        }
        elem.dequeue();
    };

});