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                                                                 jQuery.data( this, "oldzoom", this.style.zoom );
 159                                                                 this.style.zoom = 1;
 160                                                         }
 161                                                 }
 162                                         }
 163                                 }
 164
 165                                 if ( jQuery.isArray( prop[p] ) ) {
 166                                         // Create (if needed) and add to specialEasing
 167                                         (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
 168                                         prop[p] = prop[p][0];
 169                                 }
 170                         }
 171
 172                         if ( opt.overflow != null ) {
 173                                 this.style.overflow = "hidden";
 174                         }
 175
 176                         opt.curAnim = jQuery.extend({}, prop);
 177
 178                         jQuery.each( prop, function( name, val ) {
 179                                 var e = new jQuery.fx( self, opt, name );
 180
 181                                 if ( rfxtypes.test(val) ) {
 182                                         e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 183
 184                                 } else {
 185                                         var parts = rfxnum.exec(val),
 186                                                 start = e.cur(true) || 0;
 187
 188                                         if ( parts ) {
 189                                                 var end = parseFloat( parts[2] ),
 190                                                         unit = parts[3] || "px";
 191
 192                                                 // We need to compute starting value
 193                                                 if ( unit !== "px" ) {
 194                                                         self.style[ name ] = (end || 1) + unit;
 195                                                         start = ((end || 1) / e.cur(true)) * start;
 196                                                         self.style[ name ] = start + unit;
 197                                                 }
 198
 199                                                 // If a +=/-= token was provided, we're doing a relative animation
 200                                                 if ( parts[1] ) {
 201                                                         end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
 202                                                 }
 203
 204                                                 e.custom( start, end, unit );
 205
 206                                         } else {
 207                                                 e.custom( start, val, "" );
 208                                         }
 209                                 }
 210                         });
 211
 212                         // For JS strict compliance
 213                         return true;
 214                 });
 215         },
 216
 217         stop: function( clearQueue, gotoEnd ) {
 218                 var timers = jQuery.timers;
 219
 220                 if ( clearQueue ) {
 221                         this.queue([]);
 222                 }
 223
 224                 this.each(function() {
 225                         // go in reverse order so anything added to the queue during the loop is ignored
 226                         for ( var i = timers.length - 1; i >= 0; i-- ) {
 227                                 if ( timers[i].elem === this ) {
 228                                         if (gotoEnd) {
 229                                                 // force the next step to be the last
 230                                                 timers[i](true);
 231                                         }
 232
 233                                         timers.splice(i, 1);
 234                                 }
 235                         }
 236                 });
 237
 238                 // start the next in the queue if the last step wasn't forced
 239                 if ( !gotoEnd ) {
 240                         this.dequeue();
 241                 }
 242
 243                 return this;
 244         }
 245
 246 });
 247
 248 function genFx( type, num ) {
 249         var obj = {};
 250
 251         jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
 252                 obj[ this ] = type;
 253         });
 254
 255         return obj;
 256 }
 257
 258 // Generate shortcuts for custom animations
 259 jQuery.each({
 260         slideDown: genFx("show", 1),
 261         slideUp: genFx("hide", 1),
 262         slideToggle: genFx("toggle", 1),
 263         fadeIn: { opacity: "show" },
 264         fadeOut: { opacity: "hide" }
 265 }, function( name, props ) {
 266         jQuery.fn[ name ] = function( speed, easing, callback ) {
 267                 return this.animate( props, speed, easing, callback );
 268         };
 269 });
 270
 271 jQuery.extend({
 272         speed: function( speed, easing, fn ) {
 273                 var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
 274                         complete: fn || !fn && easing ||
 275                                 jQuery.isFunction( speed ) && speed,
 276                         duration: speed,
 277                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
 278                 };
 279
 280                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
 281                         opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default;
 282
 283                 // Queueing
 284                 opt.old = opt.complete;
 285                 opt.complete = function() {
 286                         if ( opt.queue !== false ) {
 287                                 jQuery(this).dequeue();
 288                         }
 289                         if ( jQuery.isFunction( opt.old ) ) {
 290                                 opt.old.call( this );
 291                         }
 292                 };
 293
 294                 return opt;
 295         },
 296
 297         easing: {
 298                 linear: function( p, n, firstNum, diff ) {
 299                         return firstNum + diff * p;
 300                 },
 301                 swing: function( p, n, firstNum, diff ) {
 302                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 303                 }
 304         },
 305
 306         timers: [],
 307
 308         fx: function( elem, options, prop ) {
 309                 this.options = options;
 310                 this.elem = elem;
 311                 this.prop = prop;
 312
 313                 if ( !options.orig ) {
 314                         options.orig = {};
 315                 }
 316         }
 317
 318 });
 319
 320 jQuery.fx.prototype = {
 321         // Simple function for setting a style value
 322         update: function() {
 323                 if ( this.options.step ) {
 324                         this.options.step.call( this.elem, this.now, this );
 325                 }
 326
 327                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 328         },
 329
 330         // Get the current size
 331         cur: function() {
 332                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
 333                         return this.elem[ this.prop ];
 334                 }
 335
 336                 var r = parseFloat( jQuery.css( this.elem, this.prop ) );
 337                 return r && r > -10000 ? r : 0;
 338         },
 339
 340         // Start an animation from one number to another
 341         custom: function( from, to, unit ) {
 342                 this.startTime = jQuery.now();
 343                 this.start = from;
 344                 this.end = to;
 345                 this.unit = unit || this.unit || "px";
 346                 this.now = this.start;
 347                 this.pos = this.state = 0;
 348
 349                 var self = this, fx = jQuery.fx;
 350                 function t( gotoEnd ) {
 351                         return self.step(gotoEnd);
 352                 }
 353
 354                 t.elem = this.elem;
 355
 356                 if ( t() && jQuery.timers.push(t) && !timerId ) {
 357                         timerId = setInterval(fx.tick, fx.interval);
 358                 }
 359         },
 360
 361         // Simple 'show' function
 362         show: function() {
 363                 // Remember where we started, so that we can go back to it later
 364                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 365                 this.options.show = true;
 366
 367                 // Begin the animation
 368                 // Make sure that we start at a small width/height to avoid any
 369                 // flash of content
 370                 this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());
 371
 372                 // Start by showing the element
 373                 jQuery( this.elem ).show();
 374         },
 375
 376         // Simple 'hide' function
 377         hide: function() {
 378                 // Remember where we started, so that we can go back to it later
 379                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 380                 this.options.hide = true;
 381
 382                 // Begin the animation
 383                 this.custom(this.cur(), 0);
 384         },
 385
 386         // Each step of an animation
 387         step: function( gotoEnd ) {
 388                 var t = jQuery.now(), done = true;
 389
 390                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
 391                         this.now = this.end;
 392                         this.pos = this.state = 1;
 393                         this.update();
 394
 395                         this.options.curAnim[ this.prop ] = true;
 396
 397                         for ( var i in this.options.curAnim ) {
 398                                 if ( this.options.curAnim[i] !== true ) {
 399                                         done = false;
 400                                 }
 401                         }
 402
 403                         if ( done ) {
 404                                 // Reset the overflow
 405                                 if ( this.options.overflow != null ) {
 406                                         this.elem.style.overflow = this.options.overflow[0];
 407                                         this.elem.style.overflowX = this.options.overflow[1];
 408                                         this.elem.style.overflowY = this.options.overflow[2];
 409                                 }
 410
 411                                 // Hide the element if the "hide" operation was done
 412                                 if ( this.options.hide ) {
 413                                         jQuery(this.elem).hide();
 414                                 }
 415
 416                                 // Reset the properties, if the item has been hidden or shown
 417                                 if ( this.options.hide || this.options.show ) {
 418                                         for ( var p in this.options.curAnim ) {
 419                                                 jQuery.style( this.elem, p, this.options.orig[p] );
 420                                         }
 421                                 }
 422
 423                                 // Execute the complete function
 424                                 this.options.complete.call( this.elem );
 425                         }
 426
 427                         return false;
 428
 429                 } else {
 430                         var n = t - this.startTime;
 431                         this.state = n / this.options.duration;
 432
 433                         // Perform the easing function, defaults to swing
 434                         var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
 435                         var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
 436                         this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
 437                         this.now = this.start + ((this.end - this.start) * this.pos);
 438
 439                         // Perform the next step of the animation
 440                         this.update();
 441                 }
 442
 443                 return true;
 444         }
 445 };
 446
 447 jQuery.extend( jQuery.fx, {
 448         tick: function() {
 449                 var timers = jQuery.timers;
 450
 451                 for ( var i = 0; i < timers.length; i++ ) {
 452                         if ( !timers[i]() ) {
 453                                 timers.splice(i--, 1);
 454                         }
 455                 }
 456
 457                 if ( !timers.length ) {
 458                         jQuery.fx.stop();
 459                 }
 460         },
 461
 462         interval: 13,
 463
 464         stop: function() {
 465                 clearInterval( timerId );
 466                 timerId = null;
 467         },
 468
 469         speeds: {
 470                 slow: 600,
 471                 fast: 200,
 472                 // Default speed
 473                 _default: 400
 474         },
 475
 476         step: {
 477                 opacity: function( fx ) {
 478                         jQuery.style( fx.elem, "opacity", fx.now );
 479                 },
 480
 481                 _default: function( fx ) {
 482                         if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
 483                                 fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
 484                         } else {
 485                                 fx.elem[ fx.prop ] = fx.now;
 486                         }
 487                 }
 488         }
 489 });
 490
 491 if ( jQuery.expr && jQuery.expr.filters ) {
 492         jQuery.expr.filters.animated = function( elem ) {
 493                 return jQuery.grep(jQuery.timers, function( fn ) {
 494                         return elem === fn.elem;
 495                 }).length;
 496         };
 497 }
 498
 499 })( jQuery );