source: main/trunk/greenstone3/web/interfaces/oran/js/jquery-ui-1.8rc1/ui/jquery.effects.drop.js@ 24245

/*
 * jQuery UI Effects Drop 1.8rc1
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Effects/Drop
 *
 * Depends:
 *  jquery.effects.core.js
 */
(function($) {

$.effects.drop = function(o) {

    return this.queue(function() {

        // Create element
        var el = $(this), props = ['position','top','left','opacity'];

        // Set options
        var mode = $.effects.setMode(el, o.options.mode || 'hide'); // Set Mode
        var direction = o.options.direction || 'left'; // Default Direction

        // Adjust
        $.effects.save(el, props); el.show(); // Save & Show
        $.effects.createWrapper(el); // Create Wrapper
        var ref = (direction == 'up' || direction == 'down') ? 'top' : 'left';
        var motion = (direction == 'up' || direction == 'left') ? 'pos' : 'neg';
        var distance = o.options.distance || (ref == 'top' ? el.outerHeight({margin:true}) / 2 : el.outerWidth({margin:true}) / 2);
        if (mode == 'show') el.css('opacity', 0).css(ref, motion == 'pos' ? -distance : distance); // Shift

        // Animation
        var animation = {opacity: mode == 'show' ? 1 : 0};
        animation[ref] = (mode == 'show' ? (motion == 'pos' ? '+=' : '-=') : (motion == 'pos' ? '-=' : '+=')) + distance;

        // Animate
        el.animate(animation, { queue: false, duration: o.duration, easing: o.options.easing, complete: function() {
            if(mode == 'hide') el.hide(); // Hide
            $.effects.restore(el, props); $.effects.removeWrapper(el); // Restore
            if(o.callback) o.callback.apply(this, arguments); // Callback
            el.dequeue();
        }});

    });

};

})(jQuery);