/*!

* jQuery UI Effects Drop 1.11.4
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/drop-effect/
*/

(function( factory ) {

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

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

        // Browser globals
        factory( jQuery );
}

}(function( $ ) {

return $.effects.effect.drop = function( o, done ) {

var el = $( this ),
        props = [ "position", "top", "bottom", "left", "right", "opacity", "height", "width" ],
        mode = $.effects.setMode( el, o.mode || "hide" ),
        show = mode === "show",
        direction = o.direction || "left",
        ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
        motion = ( direction === "up" || direction === "left" ) ? "pos" : "neg",
        animation = {
                opacity: show ? 1 : 0
        },
        distance;

// Adjust
$.effects.save( el, props );
el.show();
$.effects.createWrapper( el );

distance = o.distance || el[ ref === "top" ? "outerHeight" : "outerWidth" ]( true ) / 2;

if ( show ) {
        el
                .css( "opacity", 0 )
                .css( ref, motion === "pos" ? -distance : distance );
}

// Animation
animation[ ref ] = ( show ?
        ( motion === "pos" ? "+=" : "-=" ) :
        ( motion === "pos" ? "-=" : "+=" ) ) +
        distance;

// Animate
el.animate( animation, {
        queue: false,
        duration: o.duration,
        easing: o.easing,
        complete: function() {
                if ( mode === "hide" ) {
                        el.hide();
                }
                $.effects.restore( el, props );
                $.effects.removeWrapper( el );
                done();
        }
});

};

}));