adobe/brackets

/*!
 * jQuery UI Effects Fold @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/Fold
 *
 * Depends:
 *    jquery.effects.core.js
 */
(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();
        });

};

})(jQuery);