src/effects.js

   1 (function( jQuery ) {
   2
   3 var elemdisplay = {},
   4         rfxtypes = /^(?:toggle|show|hide)$/,
   5         rfxnum = /^([+\-]=)?([\d+.\-]+)(.*)$/,
   6         timerId,
   7         fxAttrs = [
   8                 // height animations
   9                 [ "height", "marginTop", "marginBottom", "paddingTop", "paddingBottom" ],
  10                 // width animations
  11                 [ "width", "marginLeft", "marginRight", "paddingLeft", "paddingRight" ],
  12                 // opacity animations
  13                 [ "opacity" ]
  14         ];
  15
  16 function defaultDisplay(nodeName) {
  17         if ( !elemdisplay[ nodeName ] ) {
  18                 var elem = jQuery("<" + nodeName + ">").appendTo("body"),
  19                         display = elem.css("display");
  20
  21                 elem.remove();
  22
  23                 if ( display === "none" || display === "" ) {
  24                         display = "block";
  25                 }
  26
  27                 elemdisplay[ nodeName ] = display;
  28         }
  29
  30         return elemdisplay[ nodeName ];
  31 }
  32
  33 jQuery.fn.extend({
  34         show: function( speed, easing, callback ) {
  35                 if ( speed || speed === 0 ) {
  36                         return this.animate( genFx("show", 3), speed, easing, callback);
  37                 } else {
  38                         for ( var i = 0, j = this.length; i < j; i++ ) {
  39                                 // Set elements which have been overridden with display: none
  40                                 // in a stylesheet to whatever the default browser style is
  41                                 // for such an element
  42                                 if ( jQuery.css( this[i], "display" ) === "none" && this[i].style.display !== "none" ) {
  43                                         jQuery.data(this[i], "olddisplay", defaultDisplay(this[i].nodeName));
  44                                 }
  45                         }
  46
  47                         // Set the display of the elements in a second loop
  48                         // to avoid the constant reflow
  49                         for ( i = 0, j = this.length; i < j; i++ ) {
  50                                 this[i].style.display = jQuery.data(this[i], "olddisplay") || "";
  51                         }
  52
  53                         return this;
  54                 }
  55         },
  56
  57         hide: function( speed, easing, callback ) {
  58                 if ( speed || speed === 0 ) {
  59                         return this.animate( genFx("hide", 3), speed, easing, callback);
  60
  61                 } else {
  62                         for ( var i = 0, l = this.length; i < l; i++ ) {
  63                                 var old = jQuery.data(this[i], "olddisplay");
  64                                 if ( !old && old !== "none" ) {
  65                                         jQuery.data( this[i], "olddisplay", jQuery.css( this[i], "display" ) );
  66                                 }
  67                         }
  68
  69                         // Set the display of the elements in a second loop
  70                         // to avoid the constant reflow
  71                         for ( var j = 0, k = this.length; j < k; j++ ) {
  72                                 this[j].style.display = "none";
  73                         }
  74
  75                         return this;
  76                 }
  77         },
  78
  79         // Save the old toggle function
  80         _toggle: jQuery.fn.toggle,
  81
  82         toggle: function( fn, fn2, callback ) {
  83                 var bool = typeof fn === "boolean";
  84
  85                 if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) {
  86                         this._toggle.apply( this, arguments );
  87
  88                 } else if ( fn == null || bool ) {
  89                         this.each(function() {
  90                                 var state = bool ? fn : jQuery(this).is(":hidden");
  91                                 jQuery(this)[ state ? "show" : "hide" ]();
  92                         });
  93
  94                 } else {
  95                         this.animate(genFx("toggle", 3), fn, fn2, callback);
  96                 }
  97
  98                 return this;
  99         },
 100
 101         fadeTo: function( speed, to, easing, callback ) {
 102                 return this.filter(":hidden").css("opacity", 0).show().end()
 103                                         .animate({opacity: to}, speed, easing, callback);
 104         },
 105
 106         animate: function( prop, speed, easing, callback ) {
 107                 var optall = jQuery.speed(speed, easing, callback);
 108
 109                 if ( jQuery.isEmptyObject( prop ) ) {
 110                         return this.each( optall.complete );
 111                 }
 112
 113                 return this[ optall.queue === false ? "each" : "queue" ](function() {
 114                         // XXX ‘this’ does not always have a nodeName when running the
 115                         // test suite
 116
 117                         var opt = jQuery.extend({}, optall), p,
 118                                 hidden = this.nodeType === 1 && jQuery(this).is(":hidden"),
 119                                 self = this;
 120
 121                         for ( p in prop ) {
 122                                 var name = jQuery.camelCase( p );
 123
 124                                 if ( p !== name ) {
 125                                         prop[ name ] = prop[ p ];
 126                                         delete prop[ p ];
 127                                         p = name;
 128                                 }
 129
 130                                 if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
 131                                         return opt.complete.call(this);
 132                                 }
 133
 134                                 if ( ( p === "height" || p === "width" ) ) {
 135                                         // Make sure that nothing sneaks out
 136                                         // Record all 3 overflow attributes because IE does not
 137                                         // change the overflow attribute when overflowX and
 138                                         // overflowY are set to the same value
 139                                         opt.overflow = [ this.style.overflow, this.style.overflowX, this.style.overflowY ];
 140
 141                                         // Set display property to inline-block for height/width
 142                                         // animations on inline elements that are having width/height
 143                                         // animated
 144                                         if ( jQuery.curCSS( this, "display" ) === "inline" &&
 145                                         jQuery.curCSS( this, "float" ) === "none" ) {
 146                                                 if ( !jQuery.support.inlineBlockNeedsLayout ) {
 147                                                         this.style.display = "inline-block";
 148                                                 } else {
 149                                                         var display = defaultDisplay(this.nodeName);
 150
 151                                                         // inline-level elements accept inline-block;
 152                                                         // block-level elements need to be inline with layout
 153                                                         if ( display === "inline" ) {
 154                                                                 this.style.display = "inline-block";
 155                                                         }
 156                                                         else {
 157                                                                 this.style.display = "inline";
 158                                                                 this.style.zoom = 1;
 159                                                         }
 160                                                 }
 161                                         }
 162                                 }
 163
 164                                 if ( jQuery.isArray( prop[p] ) ) {
 165                                         // Create (if needed) and add to specialEasing
 166                                         (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
 167                                         prop[p] = prop[p][0];
 168                                 }
 169                         }
 170
 171                         if ( opt.overflow != null ) {
 172                                 this.style.overflow = "hidden";
 173                         }
 174
 175                         opt.curAnim = jQuery.extend({}, prop);
 176
 177                         jQuery.each( prop, function( name, val ) {
 178                                 var e = new jQuery.fx( self, opt, name );
 179
 180                                 if ( rfxtypes.test(val) ) {
 181                                         e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 182
 183                                 } else {
 184                                         var parts = rfxnum.exec(val),
 185                                                 start = e.cur(true) || 0;
 186
 187                                         if ( parts ) {
 188                                                 var end = parseFloat( parts[2] ),
 189                                                         unit = parts[3] || "px";
 190
 191                                                 // We need to compute starting value
 192                                                 if ( unit !== "px" ) {
 193                                                         self.style[ name ] = (end || 1) + unit;
 194                                                         start = ((end || 1) / e.cur(true)) * start;
 195                                                         self.style[ name ] = start + unit;
 196                                                 }
 197
 198                                                 // If a +=/-= token was provided, we're doing a relative animation
 199                                                 if ( parts[1] ) {
 200                                                         end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
 201                                                 }
 202
 203                                                 e.custom( start, end, unit );
 204
 205                                         } else {
 206                                                 e.custom( start, val, "" );
 207                                         }
 208                                 }
 209                         });
 210
 211                         // For JS strict compliance
 212                         return true;
 213                 });
 214         },
 215
 216         stop: function( clearQueue, gotoEnd ) {
 217                 var timers = jQuery.timers;
 218
 219                 if ( clearQueue ) {
 220                         this.queue([]);
 221                 }
 222
 223                 this.each(function() {
 224                         // go in reverse order so anything added to the queue during the loop is ignored
 225                         for ( var i = timers.length - 1; i >= 0; i-- ) {
 226                                 if ( timers[i].elem === this ) {
 227                                         if (gotoEnd) {
 228                                                 // force the next step to be the last
 229                                                 timers[i](true);
 230                                         }
 231
 232                                         timers.splice(i, 1);
 233                                 }
 234                         }
 235                 });
 236
 237                 // start the next in the queue if the last step wasn't forced
 238                 if ( !gotoEnd ) {
 239                         this.dequeue();
 240                 }
 241
 242                 return this;
 243         }
 244
 245 });
 246
 247 function genFx( type, num ) {
 248         var obj = {};
 249
 250         jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
 251                 obj[ this ] = type;
 252         });
 253
 254         return obj;
 255 }
 256
 257 // Generate shortcuts for custom animations
 258 jQuery.each({
 259         slideDown: genFx("show", 1),
 260         slideUp: genFx("hide", 1),
 261         slideToggle: genFx("toggle", 1),
 262         fadeIn: { opacity: "show" },
 263         fadeOut: { opacity: "hide" }
 264 }, function( name, props ) {
 265         jQuery.fn[ name ] = function( speed, easing, callback ) {
 266                 return this.animate( props, speed, easing, callback );
 267         };
 268 });
 269
 270 jQuery.extend({
 271         speed: function( speed, easing, fn ) {
 272                 var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
 273                         complete: fn || !fn && easing ||
 274                                 jQuery.isFunction( speed ) && speed,
 275                         duration: speed,
 276                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
 277                 };
 278
 279                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
 280                         opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default;
 281
 282                 // Queueing
 283                 opt.old = opt.complete;
 284                 opt.complete = function() {
 285                         if ( opt.queue !== false ) {
 286                                 jQuery(this).dequeue();
 287                         }
 288                         if ( jQuery.isFunction( opt.old ) ) {
 289                                 opt.old.call( this );
 290                         }
 291                 };
 292
 293                 return opt;
 294         },
 295
 296         easing: {
 297                 linear: function( p, n, firstNum, diff ) {
 298                         return firstNum + diff * p;
 299                 },
 300                 swing: function( p, n, firstNum, diff ) {
 301                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 302                 }
 303         },
 304
 305         timers: [],
 306
 307         fx: function( elem, options, prop ) {
 308                 this.options = options;
 309                 this.elem = elem;
 310                 this.prop = prop;
 311
 312                 if ( !options.orig ) {
 313                         options.orig = {};
 314                 }
 315         }
 316
 317 });
 318
 319 jQuery.fx.prototype = {
 320         // Simple function for setting a style value
 321         update: function() {
 322                 if ( this.options.step ) {
 323                         this.options.step.call( this.elem, this.now, this );
 324                 }
 325
 326                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 327         },
 328
 329         // Get the current size
 330         cur: function() {
 331                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
 332                         return this.elem[ this.prop ];
 333                 }
 334
 335                 var r = parseFloat( jQuery.css( this.elem, this.prop ) );
 336                 return r && r > -10000 ? r : 0;
 337         },
 338
 339         // Start an animation from one number to another
 340         custom: function( from, to, unit ) {
 341                 this.startTime = jQuery.now();
 342                 this.start = from;
 343                 this.end = to;
 344                 this.unit = unit || this.unit || "px";
 345                 this.now = this.start;
 346                 this.pos = this.state = 0;
 347
 348                 var self = this, fx = jQuery.fx;
 349                 function t( gotoEnd ) {
 350                         return self.step(gotoEnd);
 351                 }
 352
 353                 t.elem = this.elem;
 354
 355                 if ( t() && jQuery.timers.push(t) && !timerId ) {
 356                         timerId = setInterval(fx.tick, fx.interval);
 357                 }
 358         },
 359
 360         // Simple 'show' function
 361         show: function() {
 362                 // Remember where we started, so that we can go back to it later
 363                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 364                 this.options.show = true;
 365
 366                 // Begin the animation
 367                 // Make sure that we start at a small width/height to avoid any
 368                 // flash of content
 369                 this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());
 370
 371                 // Start by showing the element
 372                 jQuery( this.elem ).show();
 373         },
 374
 375         // Simple 'hide' function
 376         hide: function() {
 377                 // Remember where we started, so that we can go back to it later
 378                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 379                 this.options.hide = true;
 380
 381                 // Begin the animation
 382                 this.custom(this.cur(), 0);
 383         },
 384
 385         // Each step of an animation
 386         step: function( gotoEnd ) {
 387                 var t = jQuery.now(), done = true;
 388
 389                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
 390                         this.now = this.end;
 391                         this.pos = this.state = 1;
 392                         this.update();
 393
 394                         this.options.curAnim[ this.prop ] = true;
 395
 396                         for ( var i in this.options.curAnim ) {
 397                                 if ( this.options.curAnim[i] !== true ) {
 398                                         done = false;
 399                                 }
 400                         }
 401
 402                         if ( done ) {
 403                                 // Reset the overflow
 404                                 if ( this.options.overflow != null ) {
 405                                         this.elem.style.overflow = this.options.overflow[0];
 406                                         this.elem.style.overflowX = this.options.overflow[1];
 407                                         this.elem.style.overflowY = this.options.overflow[2];
 408                                 }
 409
 410                                 // Hide the element if the "hide" operation was done
 411                                 if ( this.options.hide ) {
 412                                         jQuery(this.elem).hide();
 413                                 }
 414
 415                                 // Reset the properties, if the item has been hidden or shown
 416                                 if ( this.options.hide || this.options.show ) {
 417                                         for ( var p in this.options.curAnim ) {
 418                                                 jQuery.style( this.elem, p, this.options.orig[p] );
 419                                         }
 420                                 }
 421
 422                                 // Execute the complete function
 423                                 this.options.complete.call( this.elem );
 424                         }
 425
 426                         return false;
 427
 428                 } else {
 429                         var n = t - this.startTime;
 430                         this.state = n / this.options.duration;
 431
 432                         // Perform the easing function, defaults to swing
 433                         var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
 434                         var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
 435                         this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
 436                         this.now = this.start + ((this.end - this.start) * this.pos);
 437
 438                         // Perform the next step of the animation
 439                         this.update();
 440                 }
 441
 442                 return true;
 443         }
 444 };
 445
 446 jQuery.extend( jQuery.fx, {
 447         tick: function() {
 448                 var timers = jQuery.timers;
 449
 450                 for ( var i = 0; i < timers.length; i++ ) {
 451                         if ( !timers[i]() ) {
 452                                 timers.splice(i--, 1);
 453                         }
 454                 }
 455
 456                 if ( !timers.length ) {
 457                         jQuery.fx.stop();
 458                 }
 459         },
 460
 461         interval: 13,
 462
 463         stop: function() {
 464                 clearInterval( timerId );
 465                 timerId = null;
 466         },
 467
 468         speeds: {
 469                 slow: 600,
 470                 fast: 200,
 471                 // Default speed
 472                 _default: 400
 473         },
 474
 475         step: {
 476                 opacity: function( fx ) {
 477                         jQuery.style( fx.elem, "opacity", fx.now );
 478                 },
 479
 480                 _default: function( fx ) {
 481                         if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
 482                                 fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
 483                         } else {
 484                                 fx.elem[ fx.prop ] = fx.now;
 485                         }
 486                 }
 487         }
 488 });
 489
 490 if ( jQuery.expr && jQuery.expr.filters ) {
 491         jQuery.expr.filters.animated = function( elem ) {
 492                 return jQuery.grep(jQuery.timers, function( fn ) {
 493                         return elem === fn.elem;
 494                 }).length;
 495         };
 496 }
 497
 498 })( jQuery );