src/effects.js

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