Updating the copy of Google Closure Compiler.
[jquery.git] / src / effects.js
1 (function( jQuery ) {
2
3 var elemdisplay = {},
4         rfxtypes = /^(?:toggle|show|hide)$/,
5         rfxnum = /^([+\-]=)?([\d+.\-]+)(.*)$/,
6         timerId,
7         fxAttrs = [
8                 // height animations
9                 [ "height", "marginTop", "marginBottom", "paddingTop", "paddingBottom" ],
10                 // width animations
11                 [ "width", "marginLeft", "marginRight", "paddingLeft", "paddingRight" ],
12                 // opacity animations
13                 [ "opacity" ]
14         ];
15
16 jQuery.fn.extend({
17         show: function( speed, easing, callback ) {
18                 if ( speed || speed === 0 ) {
19                         return this.animate( genFx("show", 3), speed, easing, callback);
20                 } else {
21                         for ( var i = 0, j = this.length; i < j; i++ ) {
22                                 // Reset the inline display of this element to learn if it is
23                                 // being hidden by cascaded rules or not
24                                 if ( !jQuery.data(this[i], "olddisplay") && this[i].style.display === "none" ) {
25                                         this[i].style.display = "";
26                                 }
27
28                                 // Set elements which have been overridden with display: none
29                                 // in a stylesheet to whatever the default browser style is
30                                 // for such an element
31                                 if ( this[i].style.display === "" && jQuery.css( this[i], "display" ) === "none" ) {
32                                         jQuery.data(this[i], "olddisplay", defaultDisplay(this[i].nodeName));
33                                 }
34                         }
35
36                         // Set the display of most of the elements in a second loop
37                         // to avoid the constant reflow
38                         for ( i = 0; i < j; i++ ) {
39                                 this[i].style.display = jQuery.data(this[i], "olddisplay") || "";
40                         }
41
42                         return this;
43                 }
44         },
45
46         hide: function( speed, easing, callback ) {
47                 if ( speed || speed === 0 ) {
48                         return this.animate( genFx("hide", 3), speed, easing, callback);
49
50                 } else {
51                         for ( var i = 0, j = this.length; i < j; i++ ) {
52                                 var display = jQuery.css( this[i], "display" );
53
54                                 if ( display !== "none" ) {
55                                         jQuery.data( this[i], "olddisplay", display );
56                                 }
57                         }
58
59                         // Set the display of the elements in a second loop
60                         // to avoid the constant reflow
61                         for ( i = 0; i < j; i++ ) {
62                                 this[i].style.display = "none";
63                         }
64
65                         return this;
66                 }
67         },
68
69         // Save the old toggle function
70         _toggle: jQuery.fn.toggle,
71
72         toggle: function( fn, fn2, callback ) {
73                 var bool = typeof fn === "boolean";
74
75                 if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) {
76                         this._toggle.apply( this, arguments );
77
78                 } else if ( fn == null || bool ) {
79                         this.each(function() {
80                                 var state = bool ? fn : jQuery(this).is(":hidden");
81                                 jQuery(this)[ state ? "show" : "hide" ]();
82                         });
83
84                 } else {
85                         this.animate(genFx("toggle", 3), fn, fn2, callback);
86                 }
87
88                 return this;
89         },
90
91         fadeTo: function( speed, to, easing, callback ) {
92                 return this.filter(":hidden").css("opacity", 0).show().end()
93                                         .animate({opacity: to}, speed, easing, callback);
94         },
95
96         animate: function( prop, speed, easing, callback ) {
97                 var optall = jQuery.speed(speed, easing, callback);
98
99                 if ( jQuery.isEmptyObject( prop ) ) {
100                         return this.each( optall.complete );
101                 }
102
103                 return this[ optall.queue === false ? "each" : "queue" ](function() {
104                         // XXX ‘this’ does not always have a nodeName when running the
105                         // test suite
106
107                         var opt = jQuery.extend({}, optall), p,
108                                 isElement = this.nodeType === 1,
109                                 hidden = isElement && jQuery(this).is(":hidden"),
110                                 self = this;
111
112                         for ( p in prop ) {
113                                 var name = jQuery.camelCase( p );
114
115                                 if ( p !== name ) {
116                                         prop[ name ] = prop[ p ];
117                                         delete prop[ p ];
118                                         p = name;
119                                 }
120
121                                 if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
122                                         return opt.complete.call(this);
123                                 }
124
125                                 if ( isElement && ( p === "height" || p === "width" ) ) {
126                                         // Make sure that nothing sneaks out
127                                         // Record all 3 overflow attributes because IE does not
128                                         // change the overflow attribute when overflowX and
129                                         // overflowY are set to the same value
130                                         opt.overflow = [ this.style.overflow, this.style.overflowX, this.style.overflowY ];
131
132                                         // Set display property to inline-block for height/width
133                                         // animations on inline elements that are having width/height
134                                         // animated
135                                         if ( jQuery.css( this, "display" ) === "inline" &&
136                                                         jQuery.css( this, "float" ) === "none" ) {
137                                                 if ( !jQuery.support.inlineBlockNeedsLayout ) {
138                                                         this.style.display = "inline-block";
139
140                                                 } else {
141                                                         var display = defaultDisplay(this.nodeName);
142
143                                                         // inline-level elements accept inline-block;
144                                                         // block-level elements need to be inline with layout
145                                                         if ( display === "inline" ) {
146                                                                 this.style.display = "inline-block";
147
148                                                         } else {
149                                                                 this.style.display = "inline";
150                                                                 this.style.zoom = 1;
151                                                         }
152                                                 }
153                                         }
154                                 }
155
156                                 if ( jQuery.isArray( prop[p] ) ) {
157                                         // Create (if needed) and add to specialEasing
158                                         (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
159                                         prop[p] = prop[p][0];
160                                 }
161                         }
162
163                         if ( opt.overflow != null ) {
164                                 this.style.overflow = "hidden";
165                         }
166
167                         opt.curAnim = jQuery.extend({}, prop);
168
169                         jQuery.each( prop, function( name, val ) {
170                                 var e = new jQuery.fx( self, opt, name );
171
172                                 if ( rfxtypes.test(val) ) {
173                                         e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );
174
175                                 } else {
176                                         var parts = rfxnum.exec(val),
177                                                 start = e.cur(true) || 0;
178
179                                         if ( parts ) {
180                                                 var end = parseFloat( parts[2] ),
181                                                         unit = parts[3] || "px";
182
183                                                 // We need to compute starting value
184                                                 if ( unit !== "px" ) {
185                                                         jQuery.style( self, name, (end || 1) + unit);
186                                                         start = ((end || 1) / e.cur(true)) * start;
187                                                         jQuery.style( self, name, start + unit);
188                                                 }
189
190                                                 // If a +=/-= token was provided, we're doing a relative animation
191                                                 if ( parts[1] ) {
192                                                         end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
193                                                 }
194
195                                                 e.custom( start, end, unit );
196
197                                         } else {
198                                                 e.custom( start, val, "" );
199                                         }
200                                 }
201                         });
202
203                         // For JS strict compliance
204                         return true;
205                 });
206         },
207
208         stop: function( clearQueue, gotoEnd ) {
209                 var timers = jQuery.timers;
210
211                 if ( clearQueue ) {
212                         this.queue([]);
213                 }
214
215                 this.each(function() {
216                         // go in reverse order so anything added to the queue during the loop is ignored
217                         for ( var i = timers.length - 1; i >= 0; i-- ) {
218                                 if ( timers[i].elem === this ) {
219                                         if (gotoEnd) {
220                                                 // force the next step to be the last
221                                                 timers[i](true);
222                                         }
223
224                                         timers.splice(i, 1);
225                                 }
226                         }
227                 });
228
229                 // start the next in the queue if the last step wasn't forced
230                 if ( !gotoEnd ) {
231                         this.dequeue();
232                 }
233
234                 return this;
235         }
236
237 });
238
239 function genFx( type, num ) {
240         var obj = {};
241
242         jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
243                 obj[ this ] = type;
244         });
245
246         return obj;
247 }
248
249 // Generate shortcuts for custom animations
250 jQuery.each({
251         slideDown: genFx("show", 1),
252         slideUp: genFx("hide", 1),
253         slideToggle: genFx("toggle", 1),
254         fadeIn: { opacity: "show" },
255         fadeOut: { opacity: "hide" }
256 }, function( name, props ) {
257         jQuery.fn[ name ] = function( speed, easing, callback ) {
258                 return this.animate( props, speed, easing, callback );
259         };
260 });
261
262 jQuery.extend({
263         speed: function( speed, easing, fn ) {
264                 var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
265                         complete: fn || !fn && easing ||
266                                 jQuery.isFunction( speed ) && speed,
267                         duration: speed,
268                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
269                 };
270
271                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
272                         opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default;
273
274                 // Queueing
275                 opt.old = opt.complete;
276                 opt.complete = function() {
277                         if ( opt.queue !== false ) {
278                                 jQuery(this).dequeue();
279                         }
280                         if ( jQuery.isFunction( opt.old ) ) {
281                                 opt.old.call( this );
282                         }
283                 };
284
285                 return opt;
286         },
287
288         easing: {
289                 linear: function( p, n, firstNum, diff ) {
290                         return firstNum + diff * p;
291                 },
292                 swing: function( p, n, firstNum, diff ) {
293                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
294                 }
295         },
296
297         timers: [],
298
299         fx: function( elem, options, prop ) {
300                 this.options = options;
301                 this.elem = elem;
302                 this.prop = prop;
303
304                 if ( !options.orig ) {
305                         options.orig = {};
306                 }
307         }
308
309 });
310
311 jQuery.fx.prototype = {
312         // Simple function for setting a style value
313         update: function() {
314                 if ( this.options.step ) {
315                         this.options.step.call( this.elem, this.now, this );
316                 }
317
318                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
319         },
320
321         // Get the current size
322         cur: function() {
323                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
324                         return this.elem[ this.prop ];
325                 }
326
327                 var r = parseFloat( jQuery.css( this.elem, this.prop ) );
328                 return r && r > -10000 ? r : 0;
329         },
330
331         // Start an animation from one number to another
332         custom: function( from, to, unit ) {
333                 this.startTime = jQuery.now();
334                 this.start = from;
335                 this.end = to;
336                 this.unit = unit || this.unit || "px";
337                 this.now = this.start;
338                 this.pos = this.state = 0;
339
340                 var self = this, fx = jQuery.fx;
341                 function t( gotoEnd ) {
342                         return self.step(gotoEnd);
343                 }
344
345                 t.elem = this.elem;
346
347                 if ( t() && jQuery.timers.push(t) && !timerId ) {
348                         timerId = setInterval(fx.tick, fx.interval);
349                 }
350         },
351
352         // Simple 'show' function
353         show: function() {
354                 // Remember where we started, so that we can go back to it later
355                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
356                 this.options.show = true;
357
358                 // Begin the animation
359                 // Make sure that we start at a small width/height to avoid any
360                 // flash of content
361                 this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());
362
363                 // Start by showing the element
364                 jQuery( this.elem ).show();
365         },
366
367         // Simple 'hide' function
368         hide: function() {
369                 // Remember where we started, so that we can go back to it later
370                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
371                 this.options.hide = true;
372
373                 // Begin the animation
374                 this.custom(this.cur(), 0);
375         },
376
377         // Each step of an animation
378         step: function( gotoEnd ) {
379                 var t = jQuery.now(), done = true;
380
381                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
382                         this.now = this.end;
383                         this.pos = this.state = 1;
384                         this.update();
385
386                         this.options.curAnim[ this.prop ] = true;
387
388                         for ( var i in this.options.curAnim ) {
389                                 if ( this.options.curAnim[i] !== true ) {
390                                         done = false;
391                                 }
392                         }
393
394                         if ( done ) {
395                                 // Reset the overflow
396                                 if ( this.options.overflow != null && !jQuery.support.shrinkWrapBlocks ) {
397                                         var elem = this.elem, options = this.options;
398                                         jQuery.each( [ "", "X", "Y" ], function (index, value) {
399                                                 elem.style[ "overflow" + value ] = options.overflow[index];
400                                         } );
401                                 }
402
403                                 // Hide the element if the "hide" operation was done
404                                 if ( this.options.hide ) {
405                                         jQuery(this.elem).hide();
406                                 }
407
408                                 // Reset the properties, if the item has been hidden or shown
409                                 if ( this.options.hide || this.options.show ) {
410                                         for ( var p in this.options.curAnim ) {
411                                                 jQuery.style( this.elem, p, this.options.orig[p] );
412                                         }
413                                 }
414
415                                 // Execute the complete function
416                                 this.options.complete.call( this.elem );
417                         }
418
419                         return false;
420
421                 } else {
422                         var n = t - this.startTime;
423                         this.state = n / this.options.duration;
424
425                         // Perform the easing function, defaults to swing
426                         var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
427                         var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
428                         this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
429                         this.now = this.start + ((this.end - this.start) * this.pos);
430
431                         // Perform the next step of the animation
432                         this.update();
433                 }
434
435                 return true;
436         }
437 };
438
439 jQuery.extend( jQuery.fx, {
440         tick: function() {
441                 var timers = jQuery.timers;
442
443                 for ( var i = 0; i < timers.length; i++ ) {
444                         if ( !timers[i]() ) {
445                                 timers.splice(i--, 1);
446                         }
447                 }
448
449                 if ( !timers.length ) {
450                         jQuery.fx.stop();
451                 }
452         },
453
454         interval: 13,
455
456         stop: function() {
457                 clearInterval( timerId );
458                 timerId = null;
459         },
460
461         speeds: {
462                 slow: 600,
463                 fast: 200,
464                 // Default speed
465                 _default: 400
466         },
467
468         step: {
469                 opacity: function( fx ) {
470                         jQuery.style( fx.elem, "opacity", fx.now );
471                 },
472
473                 _default: function( fx ) {
474                         if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
475                                 fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
476                         } else {
477                                 fx.elem[ fx.prop ] = fx.now;
478                         }
479                 }
480         }
481 });
482
483 if ( jQuery.expr && jQuery.expr.filters ) {
484         jQuery.expr.filters.animated = function( elem ) {
485                 return jQuery.grep(jQuery.timers, function( fn ) {
486                         return elem === fn.elem;
487                 }).length;
488         };
489 }
490
491 function defaultDisplay( nodeName ) {
492         if ( !elemdisplay[ nodeName ] ) {
493                 var elem = jQuery("<" + nodeName + ">").appendTo("body"),
494                         display = elem.css("display");
495
496                 elem.remove();
497
498                 if ( display === "none" || display === "" ) {
499                         display = "block";
500                 }
501
502                 elemdisplay[ nodeName ] = display;
503         }
504
505         return elemdisplay[ nodeName ];
506 }
507
508 })( jQuery );