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                                 // Reset the inline display of this element to learn if it is
  40                                 // being hidden by cascaded rules or not
  41                                 if ( !jQuery.data(this[i], "olddisplay") && this[i].style.display === "none" ) {
  42                                         this[i].style.display = "";
  43                                 }
  44
  45                                 // Set elements which have been overridden with display: none
  46                                 // in a stylesheet to whatever the default browser style is
  47                                 // for such an element
  48                                 if ( jQuery.css( this[i], "display" ) === "none" && this[i].style.display === "" ) {
  49                                         jQuery.data(this[i], "olddisplay", defaultDisplay(this[i].nodeName));
  50                                 }
  51                         }
  52
  53                         // Set the display of most of the elements in a second loop
  54                         // to avoid the constant reflow
  55                         for ( i = 0; i < j; i++ ) {
  56                                 this[i].style.display = jQuery.data(this[i], "olddisplay") || "";
  57                         }
  58
  59                         return this;
  60                 }
  61         },
  62
  63         hide: function( speed, easing, callback ) {
  64                 if ( speed || speed === 0 ) {
  65                         return this.animate( genFx("hide", 3), speed, easing, callback);
  66
  67                 } else {
  68                         for ( var i = 0, j = this.length; i < j; i++ ) {
  69                                 var old = jQuery.data(this[i], "olddisplay");
  70                                 if ( !old ) {
  71                                         jQuery.data( this[i], "olddisplay", jQuery.css( this[i], "display" ) );
  72                                 }
  73                         }
  74
  75                         // Set the display of the elements in a second loop
  76                         // to avoid the constant reflow
  77                         for ( i = 0; i < j; i++ ) {
  78                                 this[i].style.display = "none";
  79                         }
  80
  81                         return this;
  82                 }
  83         },
  84
  85         // Save the old toggle function
  86         _toggle: jQuery.fn.toggle,
  87
  88         toggle: function( fn, fn2, callback ) {
  89                 var bool = typeof fn === "boolean";
  90
  91                 if ( jQuery.isFunction(fn) && jQuery.isFunction(fn2) ) {
  92                         this._toggle.apply( this, arguments );
  93
  94                 } else if ( fn == null || bool ) {
  95                         this.each(function() {
  96                                 var state = bool ? fn : jQuery(this).is(":hidden");
  97                                 jQuery(this)[ state ? "show" : "hide" ]();
  98                         });
  99
 100                 } else {
 101                         this.animate(genFx("toggle", 3), fn, fn2, callback);
 102                 }
 103
 104                 return this;
 105         },
 106
 107         fadeTo: function( speed, to, easing, callback ) {
 108                 return this.filter(":hidden").css("opacity", 0).show().end()
 109                                         .animate({opacity: to}, speed, easing, callback);
 110         },
 111
 112         animate: function( prop, speed, easing, callback ) {
 113                 var optall = jQuery.speed(speed, easing, callback);
 114
 115                 if ( jQuery.isEmptyObject( prop ) ) {
 116                         return this.each( optall.complete );
 117                 }
 118
 119                 return this[ optall.queue === false ? "each" : "queue" ](function() {
 120                         // XXX ‘this’ does not always have a nodeName when running the
 121                         // test suite
 122
 123                         var opt = jQuery.extend({}, optall), p,
 124                                 isElement = this.nodeType === 1,
 125                                 hidden = isElement && jQuery(this).is(":hidden"),
 126                                 self = this;
 127
 128                         for ( p in prop ) {
 129                                 var name = jQuery.camelCase( p );
 130
 131                                 if ( p !== name ) {
 132                                         prop[ name ] = prop[ p ];
 133                                         delete prop[ p ];
 134                                         p = name;
 135                                 }
 136
 137                                 if ( prop[p] === "hide" && hidden || prop[p] === "show" && !hidden ) {
 138                                         return opt.complete.call(this);
 139                                 }
 140
 141                                 if ( isElement && ( p === "height" || p === "width" ) ) {
 142                                         // Make sure that nothing sneaks out
 143                                         // Record all 3 overflow attributes because IE does not
 144                                         // change the overflow attribute when overflowX and
 145                                         // overflowY are set to the same value
 146                                         opt.overflow = [ this.style.overflow, this.style.overflowX, this.style.overflowY ];
 147
 148                                         // Set display property to inline-block for height/width
 149                                         // animations on inline elements that are having width/height
 150                                         // animated
 151                                         if ( jQuery.css( this, "display" ) === "inline" &&
 152                                                 jQuery.css( this, "float" ) === "none" ) {
 153                                                 if ( !jQuery.support.inlineBlockNeedsLayout ) {
 154                                                         this.style.display = "inline-block";
 155                                                 } else {
 156                                                         var display = defaultDisplay(this.nodeName);
 157
 158                                                         // inline-level elements accept inline-block;
 159                                                         // block-level elements need to be inline with layout
 160                                                         if ( display === "inline" ) {
 161                                                                 this.style.display = "inline-block";
 162                                                         }
 163                                                         else {
 164                                                                 this.style.display = "inline";
 165                                                                 this.style.zoom = 1;
 166                                                         }
 167                                                 }
 168                                         }
 169                                 }
 170
 171                                 if ( jQuery.isArray( prop[p] ) ) {
 172                                         // Create (if needed) and add to specialEasing
 173                                         (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
 174                                         prop[p] = prop[p][0];
 175                                 }
 176                         }
 177
 178                         if ( opt.overflow != null || (jQuery.support.shrinkWrapBlocks && isElement) ) {
 179                                 this.style.overflow = "hidden";
 180                         }
 181
 182                         opt.curAnim = jQuery.extend({}, prop);
 183
 184                         jQuery.each( prop, function( name, val ) {
 185                                 var e = new jQuery.fx( self, opt, name );
 186
 187                                 if ( rfxtypes.test(val) ) {
 188                                         e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 189
 190                                 } else {
 191                                         var parts = rfxnum.exec(val),
 192                                                 start = e.cur(true) || 0;
 193
 194                                         if ( parts ) {
 195                                                 var end = parseFloat( parts[2] ),
 196                                                         unit = parts[3] || "px";
 197
 198                                                 // We need to compute starting value
 199                                                 if ( unit !== "px" ) {
 200                                                         self.style[ name ] = (end || 1) + unit;
 201                                                         start = ((end || 1) / e.cur(true)) * start;
 202                                                         self.style[ name ] = start + unit;
 203                                                 }
 204
 205                                                 // If a +=/-= token was provided, we're doing a relative animation
 206                                                 if ( parts[1] ) {
 207                                                         end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
 208                                                 }
 209
 210                                                 e.custom( start, end, unit );
 211
 212                                         } else {
 213                                                 e.custom( start, val, "" );
 214                                         }
 215                                 }
 216                         });
 217
 218                         // For JS strict compliance
 219                         return true;
 220                 });
 221         },
 222
 223         stop: function( clearQueue, gotoEnd ) {
 224                 var timers = jQuery.timers;
 225
 226                 if ( clearQueue ) {
 227                         this.queue([]);
 228                 }
 229
 230                 this.each(function() {
 231                         // go in reverse order so anything added to the queue during the loop is ignored
 232                         for ( var i = timers.length - 1; i >= 0; i-- ) {
 233                                 if ( timers[i].elem === this ) {
 234                                         if (gotoEnd) {
 235                                                 // force the next step to be the last
 236                                                 timers[i](true);
 237                                         }
 238
 239                                         timers.splice(i, 1);
 240                                 }
 241                         }
 242                 });
 243
 244                 // start the next in the queue if the last step wasn't forced
 245                 if ( !gotoEnd ) {
 246                         this.dequeue();
 247                 }
 248
 249                 return this;
 250         }
 251
 252 });
 253
 254 function genFx( type, num ) {
 255         var obj = {};
 256
 257         jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
 258                 obj[ this ] = type;
 259         });
 260
 261         return obj;
 262 }
 263
 264 // Generate shortcuts for custom animations
 265 jQuery.each({
 266         slideDown: genFx("show", 1),
 267         slideUp: genFx("hide", 1),
 268         slideToggle: genFx("toggle", 1),
 269         fadeIn: { opacity: "show" },
 270         fadeOut: { opacity: "hide" }
 271 }, function( name, props ) {
 272         jQuery.fn[ name ] = function( speed, easing, callback ) {
 273                 return this.animate( props, speed, easing, callback );
 274         };
 275 });
 276
 277 jQuery.extend({
 278         speed: function( speed, easing, fn ) {
 279                 var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
 280                         complete: fn || !fn && easing ||
 281                                 jQuery.isFunction( speed ) && speed,
 282                         duration: speed,
 283                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
 284                 };
 285
 286                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
 287                         opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default;
 288
 289                 // Queueing
 290                 opt.old = opt.complete;
 291                 opt.complete = function() {
 292                         if ( opt.queue !== false ) {
 293                                 jQuery(this).dequeue();
 294                         }
 295                         if ( jQuery.isFunction( opt.old ) ) {
 296                                 opt.old.call( this );
 297                         }
 298                 };
 299
 300                 return opt;
 301         },
 302
 303         easing: {
 304                 linear: function( p, n, firstNum, diff ) {
 305                         return firstNum + diff * p;
 306                 },
 307                 swing: function( p, n, firstNum, diff ) {
 308                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 309                 }
 310         },
 311
 312         timers: [],
 313
 314         fx: function( elem, options, prop ) {
 315                 this.options = options;
 316                 this.elem = elem;
 317                 this.prop = prop;
 318
 319                 if ( !options.orig ) {
 320                         options.orig = {};
 321                 }
 322         }
 323
 324 });
 325
 326 jQuery.fx.prototype = {
 327         // Simple function for setting a style value
 328         update: function() {
 329                 if ( this.options.step ) {
 330                         this.options.step.call( this.elem, this.now, this );
 331                 }
 332
 333                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 334         },
 335
 336         // Get the current size
 337         cur: function() {
 338                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
 339                         return this.elem[ this.prop ];
 340                 }
 341
 342                 var r = parseFloat( jQuery.css( this.elem, this.prop ) );
 343                 return r && r > -10000 ? r : 0;
 344         },
 345
 346         // Start an animation from one number to another
 347         custom: function( from, to, unit ) {
 348                 this.startTime = jQuery.now();
 349                 this.start = from;
 350                 this.end = to;
 351                 this.unit = unit || this.unit || "px";
 352                 this.now = this.start;
 353                 this.pos = this.state = 0;
 354
 355                 var self = this, fx = jQuery.fx;
 356                 function t( gotoEnd ) {
 357                         return self.step(gotoEnd);
 358                 }
 359
 360                 t.elem = this.elem;
 361
 362                 if ( t() && jQuery.timers.push(t) && !timerId ) {
 363                         timerId = setInterval(fx.tick, fx.interval);
 364                 }
 365         },
 366
 367         // Simple 'show' function
 368         show: function() {
 369                 // Remember where we started, so that we can go back to it later
 370                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 371                 this.options.show = true;
 372
 373                 // Begin the animation
 374                 // Make sure that we start at a small width/height to avoid any
 375                 // flash of content
 376                 this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());
 377
 378                 // Start by showing the element
 379                 jQuery( this.elem ).show();
 380         },
 381
 382         // Simple 'hide' function
 383         hide: function() {
 384                 // Remember where we started, so that we can go back to it later
 385                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 386                 this.options.hide = true;
 387
 388                 // Begin the animation
 389                 this.custom(this.cur(), 0);
 390         },
 391
 392         // Each step of an animation
 393         step: function( gotoEnd ) {
 394                 var t = jQuery.now(), done = true;
 395
 396                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
 397                         this.now = this.end;
 398                         this.pos = this.state = 1;
 399                         this.update();
 400
 401                         this.options.curAnim[ this.prop ] = true;
 402
 403                         for ( var i in this.options.curAnim ) {
 404                                 if ( this.options.curAnim[i] !== true ) {
 405                                         done = false;
 406                                 }
 407                         }
 408
 409                         if ( done ) {
 410                                 // Reset the overflow
 411                                 if ( this.options.overflow != null && (!jQuery.support.shrinkWrapBlocks || !jQuery.css( this.elem, "hasLayout" )) ) {
 412                                         this.elem.style.overflow = this.options.overflow[0];
 413                                         this.elem.style.overflowX = this.options.overflow[1];
 414                                         this.elem.style.overflowY = this.options.overflow[2];
 415                                 }
 416
 417                                 // Hide the element if the "hide" operation was done
 418                                 if ( this.options.hide ) {
 419                                         jQuery(this.elem).hide();
 420                                 }
 421
 422                                 // Reset the properties, if the item has been hidden or shown
 423                                 if ( this.options.hide || this.options.show ) {
 424                                         for ( var p in this.options.curAnim ) {
 425                                                 jQuery.style( this.elem, p, this.options.orig[p] );
 426                                         }
 427                                 }
 428
 429                                 // Execute the complete function
 430                                 this.options.complete.call( this.elem );
 431                         }
 432
 433                         return false;
 434
 435                 } else {
 436                         var n = t - this.startTime;
 437                         this.state = n / this.options.duration;
 438
 439                         // Perform the easing function, defaults to swing
 440                         var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
 441                         var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
 442                         this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
 443                         this.now = this.start + ((this.end - this.start) * this.pos);
 444
 445                         // Perform the next step of the animation
 446                         this.update();
 447                 }
 448
 449                 return true;
 450         }
 451 };
 452
 453 jQuery.extend( jQuery.fx, {
 454         tick: function() {
 455                 var timers = jQuery.timers;
 456
 457                 for ( var i = 0; i < timers.length; i++ ) {
 458                         if ( !timers[i]() ) {
 459                                 timers.splice(i--, 1);
 460                         }
 461                 }
 462
 463                 if ( !timers.length ) {
 464                         jQuery.fx.stop();
 465                 }
 466         },
 467
 468         interval: 13,
 469
 470         stop: function() {
 471                 clearInterval( timerId );
 472                 timerId = null;
 473         },
 474
 475         speeds: {
 476                 slow: 600,
 477                 fast: 200,
 478                 // Default speed
 479                 _default: 400
 480         },
 481
 482         step: {
 483                 opacity: function( fx ) {
 484                         jQuery.style( fx.elem, "opacity", fx.now );
 485                 },
 486
 487                 _default: function( fx ) {
 488                         if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
 489                                 fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
 490                         } else {
 491                                 fx.elem[ fx.prop ] = fx.now;
 492                         }
 493                 }
 494         }
 495 });
 496
 497 if ( jQuery.expr && jQuery.expr.filters ) {
 498         jQuery.expr.filters.animated = function( elem ) {
 499                 return jQuery.grep(jQuery.timers, function( fn ) {
 500                         return elem === fn.elem;
 501                 }).length;
 502         };
 503 }
 504
 505 })( jQuery );