source: trunk/themes/default/js/ui/jquery.ui.effect-fold.js @ 28780

/*!
 * jQuery UI Effects Fold 1.10.4
 * 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/
 *
 * Depends:
 *      jquery.ui.effect.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);