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