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                                         opt.overflow = this.style.overflow;
 137
 138                                         // Set display property to inline-block for height/width
 139                                         // animations on inline elements that are having width/height
 140                                         // animated
 141                                         if ( jQuery.curCSS( this, "display" ) === "inline" &&
 142                                         jQuery.curCSS( this, "float" ) === "none" ) {
 143                                                 if ( !jQuery.support.inlineBlockNeedsLayout ) {
 144                                                         this.style.display = "inline-block";
 145                                                 } else {
 146                                                         var display = defaultDisplay(this.nodeName);
 147
 148                                                         // inline-level elements accept inline-block;
 149                                                         // block-level elements need to be inline with layout
 150                                                         if ( display === "inline" ) {
 151                                                                 this.style.display = "inline-block";
 152                                                         }
 153                                                         else {
 154                                                                 this.style.display = "inline";
 155                                                                 jQuery.data( this, "oldzoom", this.style.zoom );
 156                                                                 this.style.zoom = 1;
 157                                                         }
 158                                                 }
 159                                         }
 160                                 }
 161
 162                                 if ( jQuery.isArray( prop[p] ) ) {
 163                                         // Create (if needed) and add to specialEasing
 164                                         (opt.specialEasing = opt.specialEasing || {})[p] = prop[p][1];
 165                                         prop[p] = prop[p][0];
 166                                 }
 167                         }
 168
 169                         if ( opt.overflow != null ) {
 170                                 this.style.overflow = "hidden";
 171                         }
 172
 173                         opt.curAnim = jQuery.extend({}, prop);
 174
 175                         jQuery.each( prop, function( name, val ) {
 176                                 var e = new jQuery.fx( self, opt, name );
 177
 178                                 if ( rfxtypes.test(val) ) {
 179                                         e[ val === "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 180
 181                                 } else {
 182                                         var parts = rfxnum.exec(val),
 183                                                 start = e.cur(true) || 0;
 184
 185                                         if ( parts ) {
 186                                                 var end = parseFloat( parts[2] ),
 187                                                         unit = parts[3] || "px";
 188
 189                                                 // We need to compute starting value
 190                                                 if ( unit !== "px" ) {
 191                                                         self.style[ name ] = (end || 1) + unit;
 192                                                         start = ((end || 1) / e.cur(true)) * start;
 193                                                         self.style[ name ] = start + unit;
 194                                                 }
 195
 196                                                 // If a +=/-= token was provided, we're doing a relative animation
 197                                                 if ( parts[1] ) {
 198                                                         end = ((parts[1] === "-=" ? -1 : 1) * end) + start;
 199                                                 }
 200
 201                                                 e.custom( start, end, unit );
 202
 203                                         } else {
 204                                                 e.custom( start, val, "" );
 205                                         }
 206                                 }
 207                         });
 208
 209                         // For JS strict compliance
 210                         return true;
 211                 });
 212         },
 213
 214         stop: function( clearQueue, gotoEnd ) {
 215                 var timers = jQuery.timers;
 216
 217                 if ( clearQueue ) {
 218                         this.queue([]);
 219                 }
 220
 221                 this.each(function() {
 222                         // go in reverse order so anything added to the queue during the loop is ignored
 223                         for ( var i = timers.length - 1; i >= 0; i-- ) {
 224                                 if ( timers[i].elem === this ) {
 225                                         if (gotoEnd) {
 226                                                 // force the next step to be the last
 227                                                 timers[i](true);
 228                                         }
 229
 230                                         timers.splice(i, 1);
 231                                 }
 232                         }
 233                 });
 234
 235                 // start the next in the queue if the last step wasn't forced
 236                 if ( !gotoEnd ) {
 237                         this.dequeue();
 238                 }
 239
 240                 return this;
 241         }
 242
 243 });
 244
 245 function genFx( type, num ) {
 246         var obj = {};
 247
 248         jQuery.each( fxAttrs.concat.apply([], fxAttrs.slice(0,num)), function() {
 249                 obj[ this ] = type;
 250         });
 251
 252         return obj;
 253 }
 254
 255 // Generate shortcuts for custom animations
 256 jQuery.each({
 257         slideDown: genFx("show", 1),
 258         slideUp: genFx("hide", 1),
 259         slideToggle: genFx("toggle", 1),
 260         fadeIn: { opacity: "show" },
 261         fadeOut: { opacity: "hide" }
 262 }, function( name, props ) {
 263         jQuery.fn[ name ] = function( speed, easing, callback ) {
 264                 return this.animate( props, speed, easing, callback );
 265         };
 266 });
 267
 268 jQuery.extend({
 269         speed: function( speed, easing, fn ) {
 270                 var opt = speed && typeof speed === "object" ? jQuery.extend({}, speed) : {
 271                         complete: fn || !fn && easing ||
 272                                 jQuery.isFunction( speed ) && speed,
 273                         duration: speed,
 274                         easing: fn && easing || easing && !jQuery.isFunction(easing) && easing
 275                 };
 276
 277                 opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
 278                         opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[opt.duration] : jQuery.fx.speeds._default;
 279
 280                 // Queueing
 281                 opt.old = opt.complete;
 282                 opt.complete = function() {
 283                         if ( opt.queue !== false ) {
 284                                 jQuery(this).dequeue();
 285                         }
 286                         if ( jQuery.isFunction( opt.old ) ) {
 287                                 opt.old.call( this );
 288                         }
 289                 };
 290
 291                 return opt;
 292         },
 293
 294         easing: {
 295                 linear: function( p, n, firstNum, diff ) {
 296                         return firstNum + diff * p;
 297                 },
 298                 swing: function( p, n, firstNum, diff ) {
 299                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 300                 }
 301         },
 302
 303         timers: [],
 304
 305         fx: function( elem, options, prop ) {
 306                 this.options = options;
 307                 this.elem = elem;
 308                 this.prop = prop;
 309
 310                 if ( !options.orig ) {
 311                         options.orig = {};
 312                 }
 313         }
 314
 315 });
 316
 317 jQuery.fx.prototype = {
 318         // Simple function for setting a style value
 319         update: function() {
 320                 if ( this.options.step ) {
 321                         this.options.step.call( this.elem, this.now, this );
 322                 }
 323
 324                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 325         },
 326
 327         // Get the current size
 328         cur: function() {
 329                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) ) {
 330                         return this.elem[ this.prop ];
 331                 }
 332
 333                 var r = parseFloat( jQuery.css( this.elem, this.prop ) );
 334                 return r && r > -10000 ? r : 0;
 335         },
 336
 337         // Start an animation from one number to another
 338         custom: function( from, to, unit ) {
 339                 this.startTime = jQuery.now();
 340                 this.start = from;
 341                 this.end = to;
 342                 this.unit = unit || this.unit || "px";
 343                 this.now = this.start;
 344                 this.pos = this.state = 0;
 345
 346                 var self = this, fx = jQuery.fx;
 347                 function t( gotoEnd ) {
 348                         return self.step(gotoEnd);
 349                 }
 350
 351                 t.elem = this.elem;
 352
 353                 if ( t() && jQuery.timers.push(t) && !timerId ) {
 354                         timerId = setInterval(fx.tick, fx.interval);
 355                 }
 356         },
 357
 358         // Simple 'show' function
 359         show: function() {
 360                 // Remember where we started, so that we can go back to it later
 361                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 362                 this.options.show = true;
 363
 364                 // Begin the animation
 365                 // Make sure that we start at a small width/height to avoid any
 366                 // flash of content
 367                 this.custom(this.prop === "width" || this.prop === "height" ? 1 : 0, this.cur());
 368
 369                 // Start by showing the element
 370                 jQuery( this.elem ).show();
 371         },
 372
 373         // Simple 'hide' function
 374         hide: function() {
 375                 // Remember where we started, so that we can go back to it later
 376                 this.options.orig[this.prop] = jQuery.style( this.elem, this.prop );
 377                 this.options.hide = true;
 378
 379                 // Begin the animation
 380                 this.custom(this.cur(), 0);
 381         },
 382
 383         // Each step of an animation
 384         step: function( gotoEnd ) {
 385                 var t = jQuery.now(), done = true;
 386
 387                 if ( gotoEnd || t >= this.options.duration + this.startTime ) {
 388                         this.now = this.end;
 389                         this.pos = this.state = 1;
 390                         this.update();
 391
 392                         this.options.curAnim[ this.prop ] = true;
 393
 394                         for ( var i in this.options.curAnim ) {
 395                                 if ( this.options.curAnim[i] !== true ) {
 396                                         done = false;
 397                                 }
 398                         }
 399
 400                         if ( done ) {
 401                                 // Reset the overflow
 402                                 if ( this.options.overflow != null ) {
 403                                         this.elem.style.overflow = this.options.overflow;
 404                                 }
 405
 406                                 // Hide the element if the "hide" operation was done
 407                                 if ( this.options.hide ) {
 408                                         jQuery(this.elem).hide();
 409                                 }
 410
 411                                 // Reset the properties, if the item has been hidden or shown
 412                                 if ( this.options.hide || this.options.show ) {
 413                                         for ( var p in this.options.curAnim ) {
 414                                                 jQuery.style( this.elem, p, this.options.orig[p] );
 415                                         }
 416                                 }
 417
 418                                 // Execute the complete function
 419                                 this.options.complete.call( this.elem );
 420                         }
 421
 422                         return false;
 423
 424                 } else {
 425                         var n = t - this.startTime;
 426                         this.state = n / this.options.duration;
 427
 428                         // Perform the easing function, defaults to swing
 429                         var specialEasing = this.options.specialEasing && this.options.specialEasing[this.prop];
 430                         var defaultEasing = this.options.easing || (jQuery.easing.swing ? "swing" : "linear");
 431                         this.pos = jQuery.easing[specialEasing || defaultEasing](this.state, n, 0, 1, this.options.duration);
 432                         this.now = this.start + ((this.end - this.start) * this.pos);
 433
 434                         // Perform the next step of the animation
 435                         this.update();
 436                 }
 437
 438                 return true;
 439         }
 440 };
 441
 442 jQuery.extend( jQuery.fx, {
 443         tick: function() {
 444                 var timers = jQuery.timers;
 445
 446                 for ( var i = 0; i < timers.length; i++ ) {
 447                         if ( !timers[i]() ) {
 448                                 timers.splice(i--, 1);
 449                         }
 450                 }
 451
 452                 if ( !timers.length ) {
 453                         jQuery.fx.stop();
 454                 }
 455         },
 456
 457         interval: 13,
 458
 459         stop: function() {
 460                 clearInterval( timerId );
 461                 timerId = null;
 462         },
 463
 464         speeds: {
 465                 slow: 600,
 466                 fast: 200,
 467                 // Default speed
 468                 _default: 400
 469         },
 470
 471         step: {
 472                 opacity: function( fx ) {
 473                         jQuery.style( fx.elem, "opacity", fx.now );
 474                 },
 475
 476                 _default: function( fx ) {
 477                         if ( fx.elem.style && fx.elem.style[ fx.prop ] != null ) {
 478                                 fx.elem.style[ fx.prop ] = (fx.prop === "width" || fx.prop === "height" ? Math.max(0, fx.now) : fx.now) + fx.unit;
 479                         } else {
 480                                 fx.elem[ fx.prop ] = fx.now;
 481                         }
 482                 }
 483         }
 484 });
 485
 486 if ( jQuery.expr && jQuery.expr.filters ) {
 487         jQuery.expr.filters.animated = function( elem ) {
 488                 return jQuery.grep(jQuery.timers, function( fn ) {
 489                         return elem === fn.elem;
 490                 }).length;
 491         };
 492 }
 493
 494 })( jQuery );