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