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 optall = jQuery.speed(speed, easing, callback);
  70
  71                 return this[ optall.queue === false ? "each" : "queue" ](function(){
  72                         var opt = jQuery.extend({}, optall);
  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 || 1) + unit;
 109                                                         start = ((end || 1) / 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) || ( type && type.constructor == Array )) {
 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(clearQueue, gotoEnd){
 150                 var timers = jQuery.timers;
 151
 152                 if (clearQueue)
 153                         this.queue([]);
 154
 155                 this.each(function(){
 156                         // go in reverse order so anything added to the queue during the loop is ignored
 157                         for ( var i = timers.length - 1; i >= 0; i-- )
 158                                 if ( timers[i].elem == this ) {
 159                                         if (gotoEnd)
 160                                                 // force the next step to be the last
 161                                                 timers[i](true);
 162                                         timers.splice(i, 1);
 163                                 }
 164                 });
 165
 166                 // start the next in the queue if the last step wasn't forced
 167                 if (!gotoEnd)
 168                         this.dequeue();
 169
 170                 return this;
 171         }
 172
 173 });
 174
 175 var queue = function( elem, type, array ) {
 176         if ( !elem )
 177                 return;
 178
 179         type = type || "fx";
 180
 181         var q = jQuery.data( elem, type + "queue" );
 182
 183         if ( !q || array )
 184                 q = jQuery.data( elem, type + "queue",
 185                         array ? jQuery.makeArray(array) : [] );
 186
 187         return q;
 188 };
 189
 190 jQuery.fn.dequeue = function(type){
 191         type = type || "fx";
 192
 193         return this.each(function(){
 194                 var q = queue(this, type);
 195
 196                 q.shift();
 197
 198                 if ( q.length )
 199                         q[0].apply( this );
 200         });
 201 };
 202
 203 jQuery.extend({
 204
 205         speed: function(speed, easing, fn) {
 206                 var opt = speed && speed.constructor == Object ? speed : {
 207                         complete: fn || !fn && easing ||
 208                                 jQuery.isFunction( speed ) && speed,
 209                         duration: speed,
 210                         easing: fn && easing || easing && easing.constructor != Function && easing
 211                 };
 212
 213                 opt.duration = (opt.duration && opt.duration.constructor == Number ?
 214                         opt.duration :
 215                         { slow: 600, fast: 200 }[opt.duration]) || 400;
 216
 217                 // Queueing
 218                 opt.old = opt.complete;
 219                 opt.complete = function(){
 220                         if ( opt.queue !== false )
 221                                 jQuery(this).dequeue();
 222                         if ( jQuery.isFunction( opt.old ) )
 223                                 opt.old.apply( this );
 224                 };
 225
 226                 return opt;
 227         },
 228
 229         easing: {
 230                 linear: function( p, n, firstNum, diff ) {
 231                         return firstNum + diff * p;
 232                 },
 233                 swing: function( p, n, firstNum, diff ) {
 234                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 235                 }
 236         },
 237
 238         timers: [],
 239         timerId: null,
 240
 241         fx: function( elem, options, prop ){
 242                 this.options = options;
 243                 this.elem = elem;
 244                 this.prop = prop;
 245
 246                 if ( !options.orig )
 247                         options.orig = {};
 248         }
 249
 250 });
 251
 252 jQuery.fx.prototype = {
 253
 254         // Simple function for setting a style value
 255         update: function(){
 256                 if ( this.options.step )
 257                         this.options.step.apply( this.elem, [ this.now, this ] );
 258
 259                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 260
 261                 // Set display property to block for height/width animations
 262                 if ( this.prop == "height" || this.prop == "width" )
 263                         this.elem.style.display = "block";
 264         },
 265
 266         // Get the current size
 267         cur: function(force){
 268                 if ( this.elem[this.prop] != null && this.elem.style[this.prop] == null )
 269                         return this.elem[ this.prop ];
 270
 271                 var r = parseFloat(jQuery.css(this.elem, this.prop, force));
 272                 return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
 273         },
 274
 275         // Start an animation from one number to another
 276         custom: function(from, to, unit){
 277                 this.startTime = (new Date()).getTime();
 278                 this.start = from;
 279                 this.end = to;
 280                 this.unit = unit || this.unit || "px";
 281                 this.now = this.start;
 282                 this.pos = this.state = 0;
 283                 this.update();
 284
 285                 var self = this;
 286                 function t(gotoEnd){
 287                         return self.step(gotoEnd);
 288                 }
 289
 290                 t.elem = this.elem;
 291
 292                 jQuery.timers.push(t);
 293
 294                 if ( jQuery.timerId == null ) {
 295                         jQuery.timerId = setInterval(function(){
 296                                 var timers = jQuery.timers;
 297
 298                                 for ( var i = 0; i < timers.length; i++ )
 299                                         if ( !timers[i]() )
 300                                                 timers.splice(i--, 1);
 301
 302                                 if ( !timers.length ) {
 303                                         clearInterval( jQuery.timerId );
 304                                         jQuery.timerId = null;
 305                                 }
 306                         }, 13);
 307                 }
 308         },
 309
 310         // Simple 'show' function
 311         show: function(){
 312                 // Remember where we started, so that we can go back to it later
 313                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 314                 this.options.show = true;
 315
 316                 // Begin the animation
 317                 this.custom(0, this.cur());
 318
 319                 // Make sure that we start at a small width/height to avoid any
 320                 // flash of content
 321                 if ( this.prop == "width" || this.prop == "height" )
 322                         this.elem.style[this.prop] = "1px";
 323
 324                 // Start by showing the element
 325                 jQuery(this.elem).show();
 326         },
 327
 328         // Simple 'hide' function
 329         hide: function(){
 330                 // Remember where we started, so that we can go back to it later
 331                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 332                 this.options.hide = true;
 333
 334                 // Begin the animation
 335                 this.custom(this.cur(), 0);
 336         },
 337
 338         // Each step of an animation
 339         step: function(gotoEnd){
 340                 var t = (new Date()).getTime();
 341
 342                 if ( gotoEnd || t > this.options.duration + this.startTime ) {
 343                         this.now = this.end;
 344                         this.pos = this.state = 1;
 345                         this.update();
 346
 347                         this.options.curAnim[ this.prop ] = true;
 348
 349                         var done = true;
 350                         for ( var i in this.options.curAnim )
 351                                 if ( this.options.curAnim[i] !== true )
 352                                         done = false;
 353
 354                         if ( done ) {
 355                                 if ( this.options.display != null ) {
 356                                         // Reset the overflow
 357                                         this.elem.style.overflow = this.options.overflow;
 358
 359                                         // Reset the display
 360                                         this.elem.style.display = this.options.display;
 361                                         if ( jQuery.css(this.elem, "display") == "none" )
 362                                                 this.elem.style.display = "block";
 363                                 }
 364
 365                                 // Hide the element if the "hide" operation was done
 366                                 if ( this.options.hide )
 367                                         this.elem.style.display = "none";
 368
 369                                 // Reset the properties, if the item has been hidden or shown
 370                                 if ( this.options.hide || this.options.show )
 371                                         for ( var p in this.options.curAnim )
 372                                                 jQuery.attr(this.elem.style, p, this.options.orig[p]);
 373                         }
 374
 375                         // If a callback was provided, execute it
 376                         if ( done && jQuery.isFunction( this.options.complete ) )
 377                                 // Execute the complete function
 378                                 this.options.complete.apply( this.elem );
 379
 380                         return false;
 381                 } else {
 382                         var n = t - this.startTime;
 383                         this.state = n / this.options.duration;
 384
 385                         // Perform the easing function, defaults to swing
 386                         this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
 387                         this.now = this.start + ((this.end - this.start) * this.pos);
 388
 389                         // Perform the next step of the animation
 390                         this.update();
 391                 }
 392
 393                 return true;
 394         }
 395
 396 };
 397
 398 jQuery.fx.step = {
 399         scrollLeft: function(fx){
 400                 fx.elem.scrollLeft = fx.now;
 401         },
 402
 403         scrollTop: function(fx){
 404                 fx.elem.scrollTop = fx.now;
 405         },
 406
 407         opacity: function(fx){
 408                 jQuery.attr(fx.elem.style, "opacity", fx.now);
 409         },
 410
 411         _default: function(fx){
 412                 fx.elem.style[ fx.prop ] = fx.now + fx.unit;
 413         }
 414 };