WordPress源代码——jquery-ui（1.8.20——jquery.effects.fold.js）

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1	/*!
2	 * jQuery UI Effects Fold @VERSION
3	 *
4	 * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
5	 * Dual licensed under the MIT or GPL Version 2 licenses.
6	 * http://jquery.org/license
7	 *
8	 * http://docs.jquery.com/UI/Effects/Fold
9	 *
10	 * Depends:
11	 *      jquery.effects.core.js
12	 */
13	(function( $, undefined ) {
14	
15	$.effects.fold = function(o) {
16	
17	        return this.queue(function() {
18	
19	                // Create element
20	                var el = $(this), props = ['position','top','bottom','left','right'];
21	
22	                // Set options
23	                var mode = $.effects.setMode(el, o.options.mode || 'hide'); // Set Mode
24	                var size = o.options.size || 15; // Default fold size
25	                var horizFirst = !(!o.options.horizFirst); // Ensure a boolean value
26	                var duration = o.duration ? o.duration / 2 : $.fx.speeds._default / 2;
27	
28	                // Adjust
29	                $.effects.save(el, props); el.show(); // Save & Show
30	                var wrapper = $.effects.createWrapper(el).css({overflow:'hidden'}); // Create Wrapper
31	                var widthFirst = ((mode == 'show') != horizFirst);
32	                var ref = widthFirst ? ['width', 'height'] : ['height', 'width'];
33	                var distance = widthFirst ? [wrapper.width(), wrapper.height()] : [wrapper.height(), wrapper.width()];
34	                var percent = /([0-9]+)%/.exec(size);
35	                if(percent) size = parseInt(percent[1],10) / 100 * distance[mode == 'hide' ? 0 : 1];
36	                if(mode == 'show') wrapper.css(horizFirst ? {height: 0, width: size} : {height: size, width: 0}); // Shift
37	
38	                // Animation
39	                var animation1 = {}, animation2 = {};
40	                animation1[ref[0]] = mode == 'show' ? distance[0] : size;
41	                animation2[ref[1]] = mode == 'show' ? distance[1] : 0;
42	
43	                // Animate
44	                wrapper.animate(animation1, duration, o.options.easing)
45	                .animate(animation2, duration, o.options.easing, function() {
46	                        if(mode == 'hide') el.hide(); // Hide
47	                        $.effects.restore(el, props); $.effects.removeWrapper(el); // Restore
48	                        if(o.callback) o.callback.apply(el[0], arguments); // Callback
49	                        el.dequeue();
50	                });
51	
52	        });
53	
54	};
55	
56	})(jQuery);