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