adobe/brackets

/*!
 * jQuery UI Effects Pulsate @VERSION
 *
 * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Effects/Pulsate
 *
 * Depends:
 *    jquery.effects.core.js
 */
(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();
};

})(jQuery);