src/fx.js

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