source: trunk/themes/default/js/ui/jquery.effects.shake.js @ 9172

/*
 * jQuery UI Effects Shake 1.8.9
 *
 * Copyright 2011, 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/Shake
 *
 * Depends:
 *      jquery.effects.core.js
 */
(function( $, undefined ) {

$.effects.shake = function(o) {

        return this.queue(function() {

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

                // Set options
                var mode = $.effects.setMode(el, o.options.mode || 'effect'); // Set Mode
                var direction = o.options.direction || 'left'; // Default direction
                var distance = o.options.distance || 20; // Default distance
                var times = o.options.times || 3; // Default # of times
                var speed = o.duration || o.options.duration || 140; // Default speed per shake

                // 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';

                // Animation
                var animation = {}, animation1 = {}, animation2 = {};
                animation[ref] = (motion == 'pos' ? '-=' : '+=')  + distance;
                animation1[ref] = (motion == 'pos' ? '+=' : '-=')  + distance * 2;
                animation2[ref] = (motion == 'pos' ? '-=' : '+=')  + distance * 2;

                // Animate
                el.animate(animation, speed, o.options.easing);
                for (var i = 1; i < times; i++) { // Shakes
                        el.animate(animation1, speed, o.options.easing).animate(animation2, speed, o.options.easing);
                };
                el.animate(animation1, speed, o.options.easing).
                animate(animation, speed / 2, o.options.easing, function(){ // Last shake
                        $.effects.restore(el, props); $.effects.removeWrapper(el); // Restore
                        if(o.callback) o.callback.apply(this, arguments); // Callback
                });
                el.queue('fx', function() { el.dequeue(); });
                el.dequeue();
        });

};

})(jQuery);