/*!
 * jQuery UI Effects Fold 1.13.2
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Fold Effect
//>>group: Effects
//>>description: Folds an element first horizontally and then vertically.
//>>docs: http://api.jqueryui.com/fold-effect/
//>>demos: http://jqueryui.com/effect/

( function( factory ) {
    "use strict";

    if ( typeof define === "function" && define.amd ) {

        // AMD. Register as an anonymous module.
        define( [
            "jquery",
            "../version",
            "../effect"
        ], factory );
    } else {

        // Browser globals
        factory( jQuery );
    }
} )( function( $ ) {
    "use strict";

    return $.effects.define( "fold", "hide", function( options, done ) {

        // Create element
        var element = $( this ),
            mode = options.mode,
            show = mode === "show",
            hide = mode === "hide",
            size = options.size || 15,
            percent = /([0-9]+)%/.exec( size ),
            horizFirst = !!options.horizFirst,
            ref = horizFirst ? [ "right", "bottom" ] : [ "bottom", "right" ],
            duration = options.duration / 2,

            placeholder = $.effects.createPlaceholder( element ),

            start = element.cssClip(),
            animation1 = { clip: $.extend( {}, start ) },
            animation2 = { clip: $.extend( {}, start ) },

            distance = [ start[ ref[ 0 ] ], start[ ref[ 1 ] ] ],

            queuelen = element.queue().length;

        if ( percent ) {
            size = parseInt( percent[ 1 ], 10 ) / 100 * distance[ hide ? 0 : 1 ];
        }
        animation1.clip[ ref[ 0 ] ] = size;
        animation2.clip[ ref[ 0 ] ] = size;
        animation2.clip[ ref[ 1 ] ] = 0;

        if ( show ) {
            element.cssClip( animation2.clip );
            if ( placeholder ) {
                placeholder.css( $.effects.clipToBox( animation2 ) );
            }

            animation2.clip = start;
        }

        // Animate
        element
            .queue( function( next ) {
                if ( placeholder ) {
                    placeholder
                        .animate( $.effects.clipToBox( animation1 ), duration, options.easing )
                        .animate( $.effects.clipToBox( animation2 ), duration, options.easing );
                }

                next();
            } )
            .animate( animation1, duration, options.easing )
            .animate( animation2, duration, options.easing )
            .queue( done );

        $.effects.unshift( element, queuelen, 4 );
    } );

} );