src/fx.js

   1 var elemdisplay = {};
   2
   3 jQuery.fn.extend({
   4         show: function(speed,callback){
   5                 if ( speed ) {
   6                         return this.animate({
   7                                 height: "show", width: "show", opacity: "show"
   8                         }, speed, callback);
   9                 } else {
  10                         for ( var i = 0, l = this.length; i < l; i++ ){
  11                                 var old = jQuery.data(this[i], "olddisplay");
  12
  13                                 this[i].style.display = old || "";
  14
  15                                 if ( jQuery.css(this[i], "display") === "none" ) {
  16                                         var tagName = this[i].tagName, display;
  17
  18                                         if ( elemdisplay[ tagName ] ) {
  19                                                 display = elemdisplay[ tagName ];
  20                                         } else {
  21                                                 var elem = jQuery("<" + tagName + " />").appendTo("body");
  22
  23                                                 display = elem.css("display");
  24                                                 if ( display === "none" )
  25                                                         display = "block";
  26
  27                                                 elem.remove();
  28
  29                                                 elemdisplay[ tagName ] = display;
  30                                         }
  31
  32                                         this[i].style.display = jQuery.data(this[i], "olddisplay", display);
  33                                 }
  34                         }
  35
  36                         return this;
  37                 }
  38         },
  39
  40         hide: function(speed,callback){
  41                 if ( speed ) {
  42                         return this.animate({
  43                                 height: "hide", width: "hide", opacity: "hide"
  44                         }, speed, callback);
  45                 } else {
  46                         for ( var i = 0, l = this.length; i < l; i++ ){
  47                                 var old = jQuery.data(this[i], "olddisplay");
  48                                 if ( !old && old !== "none" )
  49                                         jQuery.data(this[i], "olddisplay", jQuery.css(this[i], "display"));
  50                                 this[i].style.display = "none";
  51                         }
  52                         return this;
  53                 }
  54         },
  55
  56         // Save the old toggle function
  57         _toggle: jQuery.fn.toggle,
  58
  59         toggle: function( fn, fn2 ){
  60                 var bool = typeof fn === "boolean";
  61
  62                 return jQuery.isFunction(fn) && jQuery.isFunction(fn2) ?
  63                         this._toggle.apply( this, arguments ) :
  64                         fn == null || bool ?
  65                                 this.each(function(){
  66                                         var state = bool ? fn : jQuery(this).is(":hidden");
  67                                         jQuery(this)[ state ? "show" : "hide" ]();
  68                                 }) :
  69                                 this.animate({
  70                                         height: "toggle", width: "toggle", opacity: "toggle"
  71                                 }, fn, fn2);
  72         },
  73
  74         fadeTo: function(speed,to,callback){
  75                 return this.animate({opacity: to}, speed, callback);
  76         },
  77
  78         animate: function( prop, speed, easing, callback ) {
  79                 var optall = jQuery.speed(speed, easing, callback);
  80
  81                 return this[ optall.queue === false ? "each" : "queue" ](function(){
  82
  83                         var opt = jQuery.extend({}, optall), p,
  84                                 hidden = this.nodeType == 1 && jQuery(this).is(":hidden"),
  85                                 self = this;
  86
  87                         for ( p in prop ) {
  88                                 if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
  89                                         return opt.complete.call(this);
  90
  91                                 if ( ( p == "height" || p == "width" ) && this.style ) {
  92                                         // Store display property
  93                                         opt.display = jQuery.css(this, "display");
  94
  95                                         // Make sure that nothing sneaks out
  96                                         opt.overflow = this.style.overflow;
  97                                 }
  98                         }
  99
 100                         if ( opt.overflow != null )
 101                                 this.style.overflow = "hidden";
 102
 103                         opt.curAnim = jQuery.extend({}, prop);
 104
 105                         jQuery.each( prop, function(name, val){
 106                                 var e = new jQuery.fx( self, opt, name );
 107
 108                                 if ( /toggle|show|hide/.test(val) )
 109                                         e[ val == "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 110                                 else {
 111                                         var parts = val.toString().match(/^([+-]=)?([\d+-.]+)(.*)$/),
 112                                                 start = e.cur(true) || 0;
 113
 114                                         if ( parts ) {
 115                                                 var end = parseFloat(parts[2]),
 116                                                         unit = parts[3] || "px";
 117
 118                                                 // We need to compute starting value
 119                                                 if ( unit != "px" ) {
 120                                                         self.style[ name ] = (end || 1) + unit;
 121                                                         start = ((end || 1) / e.cur(true)) * start;
 122                                                         self.style[ name ] = start + unit;
 123                                                 }
 124
 125                                                 // If a +=/-= token was provided, we're doing a relative animation
 126                                                 if ( parts[1] )
 127                                                         end = ((parts[1] == "-=" ? -1 : 1) * end) + start;
 128
 129                                                 e.custom( start, end, unit );
 130                                         } else
 131                                                 e.custom( start, val, "" );
 132                                 }
 133                         });
 134
 135                         // For JS strict compliance
 136                         return true;
 137                 });
 138         },
 139
 140         queue: function(type, fn){
 141                 if ( jQuery.isFunction(type) || jQuery.isArray(type) ) {
 142                         fn = type;
 143                         type = "fx";
 144                 }
 145
 146                 if ( !type || (typeof type === "string" && !fn) )
 147                         return queue( this[0], type );
 148
 149                 return this.each(function(){
 150                         if ( jQuery.isArray(fn) )
 151                                 queue(this, type, fn);
 152                         else {
 153                                 queue(this, type).push( fn );
 154
 155                                 if ( queue(this, type).length == 1 )
 156                                         fn.call(this);
 157                         }
 158                 });
 159         },
 160
 161         stop: function(clearQueue, gotoEnd){
 162                 var timers = jQuery.timers;
 163
 164                 if (clearQueue)
 165                         this.queue([]);
 166
 167                 this.each(function(){
 168                         // go in reverse order so anything added to the queue during the loop is ignored
 169                         for ( var i = timers.length - 1; i >= 0; i-- )
 170                                 if ( timers[i].elem == this ) {
 171                                         if (gotoEnd)
 172                                                 // force the next step to be the last
 173                                                 timers[i](true);
 174                                         timers.splice(i, 1);
 175                                 }
 176                 });
 177
 178                 // start the next in the queue if the last step wasn't forced
 179                 if (!gotoEnd)
 180                         this.dequeue();
 181
 182                 return this;
 183         }
 184
 185 });
 186
 187 // Generate shortcuts for custom animations
 188 jQuery.each({
 189         slideDown: { height:"show" },
 190         slideUp: { height: "hide" },
 191         slideToggle: { height: "toggle" },
 192         fadeIn: { opacity: "show" },
 193         fadeOut: { opacity: "hide" }
 194 }, function( name, props ){
 195         jQuery.fn[ name ] = function( speed, callback ){
 196                 return this.animate( props, speed, callback );
 197         };
 198 });
 199
 200 var queue = function( elem, type, array ) {
 201         if ( elem ){
 202
 203                 type = type || "fx";
 204
 205                 var q = jQuery.data( elem, type + "queue" );
 206
 207                 if ( !q || array )
 208                         q = jQuery.data( elem, type + "queue", jQuery.makeArray(array) );
 209
 210         }
 211         return q;
 212 };
 213
 214 jQuery.fn.dequeue = function(type){
 215         type = type || "fx";
 216
 217         return this.each(function(){
 218                 var q = queue(this, type);
 219
 220                 q.shift();
 221
 222                 if ( q.length )
 223                         q[0].call( this );
 224         });
 225 };
 226
 227 jQuery.extend({
 228
 229         speed: function(speed, easing, fn) {
 230                 var opt = typeof speed === "object" ? speed : {
 231                         complete: fn || !fn && easing ||
 232                                 jQuery.isFunction( speed ) && speed,
 233                         duration: speed,
 234                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
 235                 };
 236
 237                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
 238                         jQuery.fx.speeds[opt.duration] || jQuery.fx.speeds._default;
 239
 240                 // Queueing
 241                 opt.old = opt.complete;
 242                 opt.complete = function(){
 243                         if ( opt.queue !== false )
 244                                 jQuery(this).dequeue();
 245                         if ( jQuery.isFunction( opt.old ) )
 246                                 opt.old.call( this );
 247                 };
 248
 249                 return opt;
 250         },
 251
 252         easing: {
 253                 linear: function( p, n, firstNum, diff ) {
 254                         return firstNum + diff * p;
 255                 },
 256                 swing: function( p, n, firstNum, diff ) {
 257                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 258                 }
 259         },
 260
 261         timers: [],
 262         timerId: null,
 263
 264         fx: function( elem, options, prop ){
 265                 this.options = options;
 266                 this.elem = elem;
 267                 this.prop = prop;
 268
 269                 if ( !options.orig )
 270                         options.orig = {};
 271         }
 272
 273 });
 274
 275 jQuery.fx.prototype = {
 276
 277         // Simple function for setting a style value
 278         update: function(){
 279                 if ( this.options.step )
 280                         this.options.step.call( this.elem, this.now, this );
 281
 282                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 283
 284                 // Set display property to block for height/width animations
 285                 if ( ( this.prop == "height" || this.prop == "width" ) && this.elem.style )
 286                         this.elem.style.display = "block";
 287         },
 288
 289         // Get the current size
 290         cur: function(force){
 291                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) )
 292                         return this.elem[ this.prop ];
 293
 294                 var r = parseFloat(jQuery.css(this.elem, this.prop, force));
 295                 return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
 296         },
 297
 298         // Start an animation from one number to another
 299         custom: function(from, to, unit){
 300                 this.startTime = now();
 301                 this.start = from;
 302                 this.end = to;
 303                 this.unit = unit || this.unit || "px";
 304                 this.now = this.start;
 305                 this.pos = this.state = 0;
 306
 307                 var self = this;
 308                 function t(gotoEnd){
 309                         return self.step(gotoEnd);
 310                 }
 311
 312                 t.elem = this.elem;
 313
 314                 jQuery.timers.push(t);
 315
 316                 if ( t() && jQuery.timerId == null ) {
 317                         jQuery.timerId = setInterval(function(){
 318                                 var timers = jQuery.timers;
 319
 320                                 for ( var i = 0; i < timers.length; i++ )
 321                                         if ( !timers[i]() )
 322                                                 timers.splice(i--, 1);
 323
 324                                 if ( !timers.length ) {
 325                                         clearInterval( jQuery.timerId );
 326                                         jQuery.timerId = null;
 327                                 }
 328                         }, 13);
 329                 }
 330         },
 331
 332         // Simple 'show' function
 333         show: function(){
 334                 // Remember where we started, so that we can go back to it later
 335                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 336                 this.options.show = true;
 337
 338                 // Begin the animation
 339                 this.custom(0, this.cur());
 340
 341                 // Make sure that we start at a small width/height to avoid any
 342                 // flash of content
 343                 if ( this.prop == "width" || this.prop == "height" )
 344                         this.elem.style[this.prop] = "1px";
 345
 346                 // Start by showing the element
 347                 jQuery(this.elem).show();
 348         },
 349
 350         // Simple 'hide' function
 351         hide: function(){
 352                 // Remember where we started, so that we can go back to it later
 353                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 354                 this.options.hide = true;
 355
 356                 // Begin the animation
 357                 this.custom(this.cur(), 0);
 358         },
 359
 360         // Each step of an animation
 361         step: function(gotoEnd){
 362                 var t = now();
 363
 364                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
 365                         this.now = this.end;
 366                         this.pos = this.state = 1;
 367                         this.update();
 368
 369                         this.options.curAnim[ this.prop ] = true;
 370
 371                         var done = true;
 372                         for ( var i in this.options.curAnim )
 373                                 if ( this.options.curAnim[i] !== true )
 374                                         done = false;
 375
 376                         if ( done ) {
 377                                 if ( this.options.display != null ) {
 378                                         // Reset the overflow
 379                                         this.elem.style.overflow = this.options.overflow;
 380
 381                                         // Reset the display
 382                                         this.elem.style.display = this.options.display;
 383                                         if ( jQuery.css(this.elem, "display") == "none" )
 384                                                 this.elem.style.display = "block";
 385                                 }
 386
 387                                 // Hide the element if the "hide" operation was done
 388                                 if ( this.options.hide )
 389                                         this.elem.style.display = "none";
 390
 391                                 // Reset the properties, if the item has been hidden or shown
 392                                 if ( this.options.hide || this.options.show )
 393                                         for ( var p in this.options.curAnim )
 394                                                 jQuery.attr(this.elem.style, p, this.options.orig[p]);
 395                         }
 396
 397                         if ( done )
 398                                 // Execute the complete function
 399                                 this.options.complete.call( this.elem );
 400
 401                         return false;
 402                 } else {
 403                         var n = t - this.startTime;
 404                         this.state = n / this.options.duration;
 405
 406                         // Perform the easing function, defaults to swing
 407                         this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
 408                         this.now = this.start + ((this.end - this.start) * this.pos);
 409
 410                         // Perform the next step of the animation
 411                         this.update();
 412                 }
 413
 414                 return true;
 415         }
 416
 417 };
 418
 419 jQuery.extend( jQuery.fx, {
 420         speeds:{
 421                 slow: 600,
 422                 fast: 200,
 423                 // Default speed
 424                 _default: 400
 425         },
 426         step: {
 427
 428                 opacity: function(fx){
 429                         jQuery.attr(fx.elem.style, "opacity", fx.now);
 430                 },
 431
 432                 _default: function(fx){
 433                         if( fx.prop in fx.elem )
 434                                 fx.elem[ fx.prop ] = fx.now;
 435                         else if( fx.elem.style )
 436                                 fx.elem.style[ fx.prop ] = fx.now + fx.unit;
 437                 }
 438         }
 439 });