public/javascripts/effects.js

   1 // Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
   2 // Contributors:
   3 //  Justin Palmer (http://encytemedia.com/)
   4 //  Mark Pilgrim (http://diveintomark.org/)
   5 //  Martin Bialasinki
   6 //
   7 // script.aculo.us is freely distributable under the terms of an MIT-style license.
   8 // For details, see the script.aculo.us web site: http://script.aculo.us/
   9
  10 // converts rgb() and #xxx to #xxxxxx format,
  11 // returns self (or first argument) if not convertable
  12 String.prototype.parseColor = function() {
  13   var color = '#';
  14   if (this.slice(0,4) == 'rgb(') {
  15     var cols = this.slice(4,this.length-1).split(',');
  16     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  17   } else {
  18     if (this.slice(0,1) == '#') {
  19       if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
  20       if (this.length==7) color = this.toLowerCase();
  21     }
  22   }
  23   return (color.length==7 ? color : (arguments[0] || this));
  24 };
  25
  26 /*--------------------------------------------------------------------------*/
  27
  28 Element.collectTextNodes = function(element) {
  29   return $A($(element).childNodes).collect( function(node) {
  30     return (node.nodeType==3 ? node.nodeValue :
  31       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  32   }).flatten().join('');
  33 };
  34
  35 Element.collectTextNodesIgnoreClass = function(element, className) {
  36   return $A($(element).childNodes).collect( function(node) {
  37     return (node.nodeType==3 ? node.nodeValue :
  38       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
  39         Element.collectTextNodesIgnoreClass(node, className) : ''));
  40   }).flatten().join('');
  41 };
  42
  43 Element.setContentZoom = function(element, percent) {
  44   element = $(element);
  45   element.setStyle({fontSize: (percent/100) + 'em'});
  46   if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  47   return element;
  48 };
  49
  50 Element.getInlineOpacity = function(element){
  51   return $(element).style.opacity || '';
  52 };
  53
  54 Element.forceRerendering = function(element) {
  55   try {
  56     element = $(element);
  57     var n = document.createTextNode(' ');
  58     element.appendChild(n);
  59     element.removeChild(n);
  60   } catch(e) { }
  61 };
  62
  63 /*--------------------------------------------------------------------------*/
  64
  65 var Effect = {
  66   _elementDoesNotExistError: {
  67     name: 'ElementDoesNotExistError',
  68     message: 'The specified DOM element does not exist, but is required for this effect to operate'
  69   },
  70   Transitions: {
  71     linear: Prototype.K,
  72     sinoidal: function(pos) {
  73       return (-Math.cos(pos*Math.PI)/2) + 0.5;
  74     },
  75     reverse: function(pos) {
  76       return 1-pos;
  77     },
  78     flicker: function(pos) {
  79       var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
  80       return pos > 1 ? 1 : pos;
  81     },
  82     wobble: function(pos) {
  83       return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
  84     },
  85     pulse: function(pos, pulses) {
  86       pulses = pulses || 5;
  87       return (
  88         ((pos % (1/pulses)) * pulses).round() == 0 ?
  89               ((pos * pulses * 2) - (pos * pulses * 2).floor()) :
  90           1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
  91         );
  92     },
  93     spring: function(pos) {
  94       return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
  95     },
  96     none: function(pos) {
  97       return 0;
  98     },
  99     full: function(pos) {
 100       return 1;
 101     }
 102   },
 103   DefaultOptions: {
 104     duration:   1.0,   // seconds
 105     fps:        100,   // 100= assume 66fps max.
 106     sync:       false, // true for combining
 107     from:       0.0,
 108     to:         1.0,
 109     delay:      0.0,
 110     queue:      'parallel'
 111   },
 112   tagifyText: function(element) {
 113     var tagifyStyle = 'position:relative';
 114     if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
 115
 116     element = $(element);
 117     $A(element.childNodes).each( function(child) {
 118       if (child.nodeType==3) {
 119         child.nodeValue.toArray().each( function(character) {
 120           element.insertBefore(
 121             new Element('span', {style: tagifyStyle}).update(
 122               character == ' ' ? String.fromCharCode(160) : character),
 123               child);
 124         });
 125         Element.remove(child);
 126       }
 127     });
 128   },
 129   multiple: function(element, effect) {
 130     var elements;
 131     if (((typeof element == 'object') ||
 132         Object.isFunction(element)) &&
 133        (element.length))
 134       elements = element;
 135     else
 136       elements = $(element).childNodes;
 137
 138     var options = Object.extend({
 139       speed: 0.1,
 140       delay: 0.0
 141     }, arguments[2] || { });
 142     var masterDelay = options.delay;
 143
 144     $A(elements).each( function(element, index) {
 145       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
 146     });
 147   },
 148   PAIRS: {
 149     'slide':  ['SlideDown','SlideUp'],
 150     'blind':  ['BlindDown','BlindUp'],
 151     'appear': ['Appear','Fade']
 152   },
 153   toggle: function(element, effect) {
 154     element = $(element);
 155     effect = (effect || 'appear').toLowerCase();
 156     var options = Object.extend({
 157       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
 158     }, arguments[2] || { });
 159     Effect[element.visible() ?
 160       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
 161   }
 162 };
 163
 164 Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
 165
 166 /* ------------- core effects ------------- */
 167
 168 Effect.ScopedQueue = Class.create(Enumerable, {
 169   initialize: function() {
 170     this.effects  = [];
 171     this.interval = null;
 172   },
 173   _each: function(iterator) {
 174     this.effects._each(iterator);
 175   },
 176   add: function(effect) {
 177     var timestamp = new Date().getTime();
 178
 179     var position = Object.isString(effect.options.queue) ?
 180       effect.options.queue : effect.options.queue.position;
 181
 182     switch(position) {
 183       case 'front':
 184         // move unstarted effects after this effect
 185         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
 186             e.startOn  += effect.finishOn;
 187             e.finishOn += effect.finishOn;
 188           });
 189         break;
 190       case 'with-last':
 191         timestamp = this.effects.pluck('startOn').max() || timestamp;
 192         break;
 193       case 'end':
 194         // start effect after last queued effect has finished
 195         timestamp = this.effects.pluck('finishOn').max() || timestamp;
 196         break;
 197     }
 198
 199     effect.startOn  += timestamp;
 200     effect.finishOn += timestamp;
 201
 202     if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
 203       this.effects.push(effect);
 204
 205     if (!this.interval)
 206       this.interval = setInterval(this.loop.bind(this), 15);
 207   },
 208   remove: function(effect) {
 209     this.effects = this.effects.reject(function(e) { return e==effect });
 210     if (this.effects.length == 0) {
 211       clearInterval(this.interval);
 212       this.interval = null;
 213     }
 214   },
 215   loop: function() {
 216     var timePos = new Date().getTime();
 217     for(var i=0, len=this.effects.length;i<len;i++)
 218       this.effects[i] && this.effects[i].loop(timePos);
 219   }
 220 });
 221
 222 Effect.Queues = {
 223   instances: $H(),
 224   get: function(queueName) {
 225     if (!Object.isString(queueName)) return queueName;
 226
 227     return this.instances.get(queueName) ||
 228       this.instances.set(queueName, new Effect.ScopedQueue());
 229   }
 230 };
 231 Effect.Queue = Effect.Queues.get('global');
 232
 233 Effect.Base = Class.create({
 234   position: null,
 235   start: function(options) {
 236     function codeForEvent(options,eventName){
 237       return (
 238         (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
 239         (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
 240       );
 241     }
 242     if (options && options.transition === false) options.transition = Effect.Transitions.linear;
 243     this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
 244     this.currentFrame = 0;
 245     this.state        = 'idle';
 246     this.startOn      = this.options.delay*1000;
 247     this.finishOn     = this.startOn+(this.options.duration*1000);
 248     this.fromToDelta  = this.options.to-this.options.from;
 249     this.totalTime    = this.finishOn-this.startOn;
 250     this.totalFrames  = this.options.fps*this.options.duration;
 251
 252     eval('this.render = function(pos){ '+
 253       'if (this.state=="idle"){this.state="running";'+
 254       codeForEvent(this.options,'beforeSetup')+
 255       (this.setup ? 'this.setup();':'')+
 256       codeForEvent(this.options,'afterSetup')+
 257       '};if (this.state=="running"){'+
 258       'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
 259       'this.position=pos;'+
 260       codeForEvent(this.options,'beforeUpdate')+
 261       (this.update ? 'this.update(pos);':'')+
 262       codeForEvent(this.options,'afterUpdate')+
 263       '}}');
 264
 265     this.event('beforeStart');
 266     if (!this.options.sync)
 267       Effect.Queues.get(Object.isString(this.options.queue) ?
 268         'global' : this.options.queue.scope).add(this);
 269   },
 270   loop: function(timePos) {
 271     if (timePos >= this.startOn) {
 272       if (timePos >= this.finishOn) {
 273         this.render(1.0);
 274         this.cancel();
 275         this.event('beforeFinish');
 276         if (this.finish) this.finish();
 277         this.event('afterFinish');
 278         return;
 279       }
 280       var pos   = (timePos - this.startOn) / this.totalTime,
 281           frame = (pos * this.totalFrames).round();
 282       if (frame > this.currentFrame) {
 283         this.render(pos);
 284         this.currentFrame = frame;
 285       }
 286     }
 287   },
 288   cancel: function() {
 289     if (!this.options.sync)
 290       Effect.Queues.get(Object.isString(this.options.queue) ?
 291         'global' : this.options.queue.scope).remove(this);
 292     this.state = 'finished';
 293   },
 294   event: function(eventName) {
 295     if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
 296     if (this.options[eventName]) this.options[eventName](this);
 297   },
 298   inspect: function() {
 299     var data = $H();
 300     for(property in this)
 301       if (!Object.isFunction(this[property])) data.set(property, this[property]);
 302     return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
 303   }
 304 });
 305
 306 Effect.Parallel = Class.create(Effect.Base, {
 307   initialize: function(effects) {
 308     this.effects = effects || [];
 309     this.start(arguments[1]);
 310   },
 311   update: function(position) {
 312     this.effects.invoke('render', position);
 313   },
 314   finish: function(position) {
 315     this.effects.each( function(effect) {
 316       effect.render(1.0);
 317       effect.cancel();
 318       effect.event('beforeFinish');
 319       if (effect.finish) effect.finish(position);
 320       effect.event('afterFinish');
 321     });
 322   }
 323 });
 324
 325 Effect.Tween = Class.create(Effect.Base, {
 326   initialize: function(object, from, to) {
 327     object = Object.isString(object) ? $(object) : object;
 328     var args = $A(arguments), method = args.last(),
 329       options = args.length == 5 ? args[3] : null;
 330     this.method = Object.isFunction(method) ? method.bind(object) :
 331       Object.isFunction(object[method]) ? object[method].bind(object) :
 332       function(value) { object[method] = value };
 333     this.start(Object.extend({ from: from, to: to }, options || { }));
 334   },
 335   update: function(position) {
 336     this.method(position);
 337   }
 338 });
 339
 340 Effect.Event = Class.create(Effect.Base, {
 341   initialize: function() {
 342     this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
 343   },
 344   update: Prototype.emptyFunction
 345 });
 346
 347 Effect.Opacity = Class.create(Effect.Base, {
 348   initialize: function(element) {
 349     this.element = $(element);
 350     if (!this.element) throw(Effect._elementDoesNotExistError);
 351     // make this work on IE on elements without 'layout'
 352     if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
 353       this.element.setStyle({zoom: 1});
 354     var options = Object.extend({
 355       from: this.element.getOpacity() || 0.0,
 356       to:   1.0
 357     }, arguments[1] || { });
 358     this.start(options);
 359   },
 360   update: function(position) {
 361     this.element.setOpacity(position);
 362   }
 363 });
 364
 365 Effect.Move = Class.create(Effect.Base, {
 366   initialize: function(element) {
 367     this.element = $(element);
 368     if (!this.element) throw(Effect._elementDoesNotExistError);
 369     var options = Object.extend({
 370       x:    0,
 371       y:    0,
 372       mode: 'relative'
 373     }, arguments[1] || { });
 374     this.start(options);
 375   },
 376   setup: function() {
 377     this.element.makePositioned();
 378     this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
 379     this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
 380     if (this.options.mode == 'absolute') {
 381       this.options.x = this.options.x - this.originalLeft;
 382       this.options.y = this.options.y - this.originalTop;
 383     }
 384   },
 385   update: function(position) {
 386     this.element.setStyle({
 387       left: (this.options.x  * position + this.originalLeft).round() + 'px',
 388       top:  (this.options.y  * position + this.originalTop).round()  + 'px'
 389     });
 390   }
 391 });
 392
 393 // for backwards compatibility
 394 Effect.MoveBy = function(element, toTop, toLeft) {
 395   return new Effect.Move(element,
 396     Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
 397 };
 398
 399 Effect.Scale = Class.create(Effect.Base, {
 400   initialize: function(element, percent) {
 401     this.element = $(element);
 402     if (!this.element) throw(Effect._elementDoesNotExistError);
 403     var options = Object.extend({
 404       scaleX: true,
 405       scaleY: true,
 406       scaleContent: true,
 407       scaleFromCenter: false,
 408       scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
 409       scaleFrom: 100.0,
 410       scaleTo:   percent
 411     }, arguments[2] || { });
 412     this.start(options);
 413   },
 414   setup: function() {
 415     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
 416     this.elementPositioning = this.element.getStyle('position');
 417
 418     this.originalStyle = { };
 419     ['top','left','width','height','fontSize'].each( function(k) {
 420       this.originalStyle[k] = this.element.style[k];
 421     }.bind(this));
 422
 423     this.originalTop  = this.element.offsetTop;
 424     this.originalLeft = this.element.offsetLeft;
 425
 426     var fontSize = this.element.getStyle('font-size') || '100%';
 427     ['em','px','%','pt'].each( function(fontSizeType) {
 428       if (fontSize.indexOf(fontSizeType)>0) {
 429         this.fontSize     = parseFloat(fontSize);
 430         this.fontSizeType = fontSizeType;
 431       }
 432     }.bind(this));
 433
 434     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
 435
 436     this.dims = null;
 437     if (this.options.scaleMode=='box')
 438       this.dims = [this.element.offsetHeight, this.element.offsetWidth];
 439     if (/^content/.test(this.options.scaleMode))
 440       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
 441     if (!this.dims)
 442       this.dims = [this.options.scaleMode.originalHeight,
 443                    this.options.scaleMode.originalWidth];
 444   },
 445   update: function(position) {
 446     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
 447     if (this.options.scaleContent && this.fontSize)
 448       this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
 449     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
 450   },
 451   finish: function(position) {
 452     if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
 453   },
 454   setDimensions: function(height, width) {
 455     var d = { };
 456     if (this.options.scaleX) d.width = width.round() + 'px';
 457     if (this.options.scaleY) d.height = height.round() + 'px';
 458     if (this.options.scaleFromCenter) {
 459       var topd  = (height - this.dims[0])/2;
 460       var leftd = (width  - this.dims[1])/2;
 461       if (this.elementPositioning == 'absolute') {
 462         if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
 463         if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
 464       } else {
 465         if (this.options.scaleY) d.top = -topd + 'px';
 466         if (this.options.scaleX) d.left = -leftd + 'px';
 467       }
 468     }
 469     this.element.setStyle(d);
 470   }
 471 });
 472
 473 Effect.Highlight = Class.create(Effect.Base, {
 474   initialize: function(element) {
 475     this.element = $(element);
 476     if (!this.element) throw(Effect._elementDoesNotExistError);
 477     var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
 478     this.start(options);
 479   },
 480   setup: function() {
 481     // Prevent executing on elements not in the layout flow
 482     if (this.element.getStyle('display')=='none') { this.cancel(); return; }
 483     // Disable background image during the effect
 484     this.oldStyle = { };
 485     if (!this.options.keepBackgroundImage) {
 486       this.oldStyle.backgroundImage = this.element.getStyle('background-image');
 487       this.element.setStyle({backgroundImage: 'none'});
 488     }
 489     if (!this.options.endcolor)
 490       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
 491     if (!this.options.restorecolor)
 492       this.options.restorecolor = this.element.getStyle('background-color');
 493     // init color calculations
 494     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
 495     this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
 496   },
 497   update: function(position) {
 498     this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
 499       return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
 500   },
 501   finish: function() {
 502     this.element.setStyle(Object.extend(this.oldStyle, {
 503       backgroundColor: this.options.restorecolor
 504     }));
 505   }
 506 });
 507
 508 Effect.ScrollTo = function(element) {
 509   var options = arguments[1] || { },
 510     scrollOffsets = document.viewport.getScrollOffsets(),
 511     elementOffsets = $(element).cumulativeOffset(),
 512     max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();
 513
 514   if (options.offset) elementOffsets[1] += options.offset;
 515
 516   return new Effect.Tween(null,
 517     scrollOffsets.top,
 518     elementOffsets[1] > max ? max : elementOffsets[1],
 519     options,
 520     function(p){ scrollTo(scrollOffsets.left, p.round()) }
 521   );
 522 };
 523
 524 /* ------------- combination effects ------------- */
 525
 526 Effect.Fade = function(element) {
 527   element = $(element);
 528   var oldOpacity = element.getInlineOpacity();
 529   var options = Object.extend({
 530     from: element.getOpacity() || 1.0,
 531     to:   0.0,
 532     afterFinishInternal: function(effect) {
 533       if (effect.options.to!=0) return;
 534       effect.element.hide().setStyle({opacity: oldOpacity});
 535     }
 536   }, arguments[1] || { });
 537   return new Effect.Opacity(element,options);
 538 };
 539
 540 Effect.Appear = function(element) {
 541   element = $(element);
 542   var options = Object.extend({
 543   from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
 544   to:   1.0,
 545   // force Safari to render floated elements properly
 546   afterFinishInternal: function(effect) {
 547     effect.element.forceRerendering();
 548   },
 549   beforeSetup: function(effect) {
 550     effect.element.setOpacity(effect.options.from).show();
 551   }}, arguments[1] || { });
 552   return new Effect.Opacity(element,options);
 553 };
 554
 555 Effect.Puff = function(element) {
 556   element = $(element);
 557   var oldStyle = {
 558     opacity: element.getInlineOpacity(),
 559     position: element.getStyle('position'),
 560     top:  element.style.top,
 561     left: element.style.left,
 562     width: element.style.width,
 563     height: element.style.height
 564   };
 565   return new Effect.Parallel(
 566    [ new Effect.Scale(element, 200,
 567       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
 568      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
 569      Object.extend({ duration: 1.0,
 570       beforeSetupInternal: function(effect) {
 571         Position.absolutize(effect.effects[0].element)
 572       },
 573       afterFinishInternal: function(effect) {
 574          effect.effects[0].element.hide().setStyle(oldStyle); }
 575      }, arguments[1] || { })
 576    );
 577 };
 578
 579 Effect.BlindUp = function(element) {
 580   element = $(element);
 581   element.makeClipping();
 582   return new Effect.Scale(element, 0,
 583     Object.extend({ scaleContent: false,
 584       scaleX: false,
 585       restoreAfterFinish: true,
 586       afterFinishInternal: function(effect) {
 587         effect.element.hide().undoClipping();
 588       }
 589     }, arguments[1] || { })
 590   );
 591 };
 592
 593 Effect.BlindDown = function(element) {
 594   element = $(element);
 595   var elementDimensions = element.getDimensions();
 596   return new Effect.Scale(element, 100, Object.extend({
 597     scaleContent: false,
 598     scaleX: false,
 599     scaleFrom: 0,
 600     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 601     restoreAfterFinish: true,
 602     afterSetup: function(effect) {
 603       effect.element.makeClipping().setStyle({height: '0px'}).show();
 604     },
 605     afterFinishInternal: function(effect) {
 606       effect.element.undoClipping();
 607     }
 608   }, arguments[1] || { }));
 609 };
 610
 611 Effect.SwitchOff = function(element) {
 612   element = $(element);
 613   var oldOpacity = element.getInlineOpacity();
 614   return new Effect.Appear(element, Object.extend({
 615     duration: 0.4,
 616     from: 0,
 617     transition: Effect.Transitions.flicker,
 618     afterFinishInternal: function(effect) {
 619       new Effect.Scale(effect.element, 1, {
 620         duration: 0.3, scaleFromCenter: true,
 621         scaleX: false, scaleContent: false, restoreAfterFinish: true,
 622         beforeSetup: function(effect) {
 623           effect.element.makePositioned().makeClipping();
 624         },
 625         afterFinishInternal: function(effect) {
 626           effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
 627         }
 628       })
 629     }
 630   }, arguments[1] || { }));
 631 };
 632
 633 Effect.DropOut = function(element) {
 634   element = $(element);
 635   var oldStyle = {
 636     top: element.getStyle('top'),
 637     left: element.getStyle('left'),
 638     opacity: element.getInlineOpacity() };
 639   return new Effect.Parallel(
 640     [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
 641       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
 642     Object.extend(
 643       { duration: 0.5,
 644         beforeSetup: function(effect) {
 645           effect.effects[0].element.makePositioned();
 646         },
 647         afterFinishInternal: function(effect) {
 648           effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
 649         }
 650       }, arguments[1] || { }));
 651 };
 652
 653 Effect.Shake = function(element) {
 654   element = $(element);
 655   var options = Object.extend({
 656     distance: 20,
 657     duration: 0.5
 658   }, arguments[1] || {});
 659   var distance = parseFloat(options.distance);
 660   var split = parseFloat(options.duration) / 10.0;
 661   var oldStyle = {
 662     top: element.getStyle('top'),
 663     left: element.getStyle('left') };
 664     return new Effect.Move(element,
 665       { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
 666     new Effect.Move(effect.element,
 667       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 668     new Effect.Move(effect.element,
 669       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 670     new Effect.Move(effect.element,
 671       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 672     new Effect.Move(effect.element,
 673       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 674     new Effect.Move(effect.element,
 675       { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
 676         effect.element.undoPositioned().setStyle(oldStyle);
 677   }}) }}) }}) }}) }}) }});
 678 };
 679
 680 Effect.SlideDown = function(element) {
 681   element = $(element).cleanWhitespace();
 682   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
 683   var oldInnerBottom = element.down().getStyle('bottom');
 684   var elementDimensions = element.getDimensions();
 685   return new Effect.Scale(element, 100, Object.extend({
 686     scaleContent: false,
 687     scaleX: false,
 688     scaleFrom: window.opera ? 0 : 1,
 689     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 690     restoreAfterFinish: true,
 691     afterSetup: function(effect) {
 692       effect.element.makePositioned();
 693       effect.element.down().makePositioned();
 694       if (window.opera) effect.element.setStyle({top: ''});
 695       effect.element.makeClipping().setStyle({height: '0px'}).show();
 696     },
 697     afterUpdateInternal: function(effect) {
 698       effect.element.down().setStyle({bottom:
 699         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 700     },
 701     afterFinishInternal: function(effect) {
 702       effect.element.undoClipping().undoPositioned();
 703       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
 704     }, arguments[1] || { })
 705   );
 706 };
 707
 708 Effect.SlideUp = function(element) {
 709   element = $(element).cleanWhitespace();
 710   var oldInnerBottom = element.down().getStyle('bottom');
 711   var elementDimensions = element.getDimensions();
 712   return new Effect.Scale(element, window.opera ? 0 : 1,
 713    Object.extend({ scaleContent: false,
 714     scaleX: false,
 715     scaleMode: 'box',
 716     scaleFrom: 100,
 717     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 718     restoreAfterFinish: true,
 719     afterSetup: function(effect) {
 720       effect.element.makePositioned();
 721       effect.element.down().makePositioned();
 722       if (window.opera) effect.element.setStyle({top: ''});
 723       effect.element.makeClipping().show();
 724     },
 725     afterUpdateInternal: function(effect) {
 726       effect.element.down().setStyle({bottom:
 727         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 728     },
 729     afterFinishInternal: function(effect) {
 730       effect.element.hide().undoClipping().undoPositioned();
 731       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
 732     }
 733    }, arguments[1] || { })
 734   );
 735 };
 736
 737 // Bug in opera makes the TD containing this element expand for a instance after finish
 738 Effect.Squish = function(element) {
 739   return new Effect.Scale(element, window.opera ? 1 : 0, {
 740     restoreAfterFinish: true,
 741     beforeSetup: function(effect) {
 742       effect.element.makeClipping();
 743     },
 744     afterFinishInternal: function(effect) {
 745       effect.element.hide().undoClipping();
 746     }
 747   });
 748 };
 749
 750 Effect.Grow = function(element) {
 751   element = $(element);
 752   var options = Object.extend({
 753     direction: 'center',
 754     moveTransition: Effect.Transitions.sinoidal,
 755     scaleTransition: Effect.Transitions.sinoidal,
 756     opacityTransition: Effect.Transitions.full
 757   }, arguments[1] || { });
 758   var oldStyle = {
 759     top: element.style.top,
 760     left: element.style.left,
 761     height: element.style.height,
 762     width: element.style.width,
 763     opacity: element.getInlineOpacity() };
 764
 765   var dims = element.getDimensions();
 766   var initialMoveX, initialMoveY;
 767   var moveX, moveY;
 768
 769   switch (options.direction) {
 770     case 'top-left':
 771       initialMoveX = initialMoveY = moveX = moveY = 0;
 772       break;
 773     case 'top-right':
 774       initialMoveX = dims.width;
 775       initialMoveY = moveY = 0;
 776       moveX = -dims.width;
 777       break;
 778     case 'bottom-left':
 779       initialMoveX = moveX = 0;
 780       initialMoveY = dims.height;
 781       moveY = -dims.height;
 782       break;
 783     case 'bottom-right':
 784       initialMoveX = dims.width;
 785       initialMoveY = dims.height;
 786       moveX = -dims.width;
 787       moveY = -dims.height;
 788       break;
 789     case 'center':
 790       initialMoveX = dims.width / 2;
 791       initialMoveY = dims.height / 2;
 792       moveX = -dims.width / 2;
 793       moveY = -dims.height / 2;
 794       break;
 795   }
 796
 797   return new Effect.Move(element, {
 798     x: initialMoveX,
 799     y: initialMoveY,
 800     duration: 0.01,
 801     beforeSetup: function(effect) {
 802       effect.element.hide().makeClipping().makePositioned();
 803     },
 804     afterFinishInternal: function(effect) {
 805       new Effect.Parallel(
 806         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
 807           new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
 808           new Effect.Scale(effect.element, 100, {
 809             scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
 810             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
 811         ], Object.extend({
 812              beforeSetup: function(effect) {
 813                effect.effects[0].element.setStyle({height: '0px'}).show();
 814              },
 815              afterFinishInternal: function(effect) {
 816                effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
 817              }
 818            }, options)
 819       )
 820     }
 821   });
 822 };
 823
 824 Effect.Shrink = function(element) {
 825   element = $(element);
 826   var options = Object.extend({
 827     direction: 'center',
 828     moveTransition: Effect.Transitions.sinoidal,
 829     scaleTransition: Effect.Transitions.sinoidal,
 830     opacityTransition: Effect.Transitions.none
 831   }, arguments[1] || { });
 832   var oldStyle = {
 833     top: element.style.top,
 834     left: element.style.left,
 835     height: element.style.height,
 836     width: element.style.width,
 837     opacity: element.getInlineOpacity() };
 838
 839   var dims = element.getDimensions();
 840   var moveX, moveY;
 841
 842   switch (options.direction) {
 843     case 'top-left':
 844       moveX = moveY = 0;
 845       break;
 846     case 'top-right':
 847       moveX = dims.width;
 848       moveY = 0;
 849       break;
 850     case 'bottom-left':
 851       moveX = 0;
 852       moveY = dims.height;
 853       break;
 854     case 'bottom-right':
 855       moveX = dims.width;
 856       moveY = dims.height;
 857       break;
 858     case 'center':
 859       moveX = dims.width / 2;
 860       moveY = dims.height / 2;
 861       break;
 862   }
 863
 864   return new Effect.Parallel(
 865     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
 866       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
 867       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
 868     ], Object.extend({
 869          beforeStartInternal: function(effect) {
 870            effect.effects[0].element.makePositioned().makeClipping();
 871          },
 872          afterFinishInternal: function(effect) {
 873            effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
 874        }, options)
 875   );
 876 };
 877
 878 Effect.Pulsate = function(element) {
 879   element = $(element);
 880   var options    = arguments[1] || { };
 881   var oldOpacity = element.getInlineOpacity();
 882   var transition = options.transition || Effect.Transitions.sinoidal;
 883   var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
 884   reverser.bind(transition);
 885   return new Effect.Opacity(element,
 886     Object.extend(Object.extend({  duration: 2.0, from: 0,
 887       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
 888     }, options), {transition: reverser}));
 889 };
 890
 891 Effect.Fold = function(element) {
 892   element = $(element);
 893   var oldStyle = {
 894     top: element.style.top,
 895     left: element.style.left,
 896     width: element.style.width,
 897     height: element.style.height };
 898   element.makeClipping();
 899   return new Effect.Scale(element, 5, Object.extend({
 900     scaleContent: false,
 901     scaleX: false,
 902     afterFinishInternal: function(effect) {
 903     new Effect.Scale(element, 1, {
 904       scaleContent: false,
 905       scaleY: false,
 906       afterFinishInternal: function(effect) {
 907         effect.element.hide().undoClipping().setStyle(oldStyle);
 908       } });
 909   }}, arguments[1] || { }));
 910 };
 911
 912 Effect.Morph = Class.create(Effect.Base, {
 913   initialize: function(element) {
 914     this.element = $(element);
 915     if (!this.element) throw(Effect._elementDoesNotExistError);
 916     var options = Object.extend({
 917       style: { }
 918     }, arguments[1] || { });
 919
 920     if (!Object.isString(options.style)) this.style = $H(options.style);
 921     else {
 922       if (options.style.include(':'))
 923         this.style = options.style.parseStyle();
 924       else {
 925         this.element.addClassName(options.style);
 926         this.style = $H(this.element.getStyles());
 927         this.element.removeClassName(options.style);
 928         var css = this.element.getStyles();
 929         this.style = this.style.reject(function(style) {
 930           return style.value == css[style.key];
 931         });
 932         options.afterFinishInternal = function(effect) {
 933           effect.element.addClassName(effect.options.style);
 934           effect.transforms.each(function(transform) {
 935             effect.element.style[transform.style] = '';
 936           });
 937         }
 938       }
 939     }
 940     this.start(options);
 941   },
 942
 943   setup: function(){
 944     function parseColor(color){
 945       if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
 946       color = color.parseColor();
 947       return $R(0,2).map(function(i){
 948         return parseInt( color.slice(i*2+1,i*2+3), 16 )
 949       });
 950     }
 951     this.transforms = this.style.map(function(pair){
 952       var property = pair[0], value = pair[1], unit = null;
 953
 954       if (value.parseColor('#zzzzzz') != '#zzzzzz') {
 955         value = value.parseColor();
 956         unit  = 'color';
 957       } else if (property == 'opacity') {
 958         value = parseFloat(value);
 959         if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
 960           this.element.setStyle({zoom: 1});
 961       } else if (Element.CSS_LENGTH.test(value)) {
 962           var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
 963           value = parseFloat(components[1]);
 964           unit = (components.length == 3) ? components[2] : null;
 965       }
 966
 967       var originalValue = this.element.getStyle(property);
 968       return {
 969         style: property.camelize(),
 970         originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
 971         targetValue: unit=='color' ? parseColor(value) : value,
 972         unit: unit
 973       };
 974     }.bind(this)).reject(function(transform){
 975       return (
 976         (transform.originalValue == transform.targetValue) ||
 977         (
 978           transform.unit != 'color' &&
 979           (isNaN(transform.originalValue) || isNaN(transform.targetValue))
 980         )
 981       )
 982     });
 983   },
 984   update: function(position) {
 985     var style = { }, transform, i = this.transforms.length;
 986     while(i--)
 987       style[(transform = this.transforms[i]).style] =
 988         transform.unit=='color' ? '#'+
 989           (Math.round(transform.originalValue[0]+
 990             (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
 991           (Math.round(transform.originalValue[1]+
 992             (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
 993           (Math.round(transform.originalValue[2]+
 994             (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
 995         (transform.originalValue +
 996           (transform.targetValue - transform.originalValue) * position).toFixed(3) +
 997             (transform.unit === null ? '' : transform.unit);
 998     this.element.setStyle(style, true);
 999   }
1000 });
1001
1002 Effect.Transform = Class.create({
1003   initialize: function(tracks){
1004     this.tracks  = [];
1005     this.options = arguments[1] || { };
1006     this.addTracks(tracks);
1007   },
1008   addTracks: function(tracks){
1009     tracks.each(function(track){
1010       track = $H(track);
1011       var data = track.values().first();
1012       this.tracks.push($H({
1013         ids:     track.keys().first(),
1014         effect:  Effect.Morph,
1015         options: { style: data }
1016       }));
1017     }.bind(this));
1018     return this;
1019   },
1020   play: function(){
1021     return new Effect.Parallel(
1022       this.tracks.map(function(track){
1023         var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
1024         var elements = [$(ids) || $$(ids)].flatten();
1025         return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
1026       }).flatten(),
1027       this.options
1028     );
1029   }
1030 });
1031
1032 Element.CSS_PROPERTIES = $w(
1033   'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
1034   'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
1035   'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
1036   'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
1037   'fontSize fontWeight height left letterSpacing lineHeight ' +
1038   'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
1039   'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
1040   'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
1041   'right textIndent top width wordSpacing zIndex');
1042
1043 Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
1044
1045 String.__parseStyleElement = document.createElement('div');
1046 String.prototype.parseStyle = function(){
1047   var style, styleRules = $H();
1048   if (Prototype.Browser.WebKit)
1049     style = new Element('div',{style:this}).style;
1050   else {
1051     String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
1052     style = String.__parseStyleElement.childNodes[0].style;
1053   }
1054
1055   Element.CSS_PROPERTIES.each(function(property){
1056     if (style[property]) styleRules.set(property, style[property]);
1057   });
1058
1059   if (Prototype.Browser.IE && this.include('opacity'))
1060     styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
1061
1062   return styleRules;
1063 };
1064
1065 if (document.defaultView && document.defaultView.getComputedStyle) {
1066   Element.getStyles = function(element) {
1067     var css = document.defaultView.getComputedStyle($(element), null);
1068     return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
1069       styles[property] = css[property];
1070       return styles;
1071     });
1072   };
1073 } else {
1074   Element.getStyles = function(element) {
1075     element = $(element);
1076     var css = element.currentStyle, styles;
1077     styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
1078       hash.set(property, css[property]);
1079       return hash;
1080     });
1081     if (!styles.opacity) styles.set('opacity', element.getOpacity());
1082     return styles;
1083   };
1084 };
1085
1086 Effect.Methods = {
1087   morph: function(element, style) {
1088     element = $(element);
1089     new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
1090     return element;
1091   },
1092   visualEffect: function(element, effect, options) {
1093     element = $(element)
1094     var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
1095     new Effect[klass](element, options);
1096     return element;
1097   },
1098   highlight: function(element, options) {
1099     element = $(element);
1100     new Effect.Highlight(element, options);
1101     return element;
1102   }
1103 };
1104
1105 $w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
1106   'pulsate shake puff squish switchOff dropOut').each(
1107   function(effect) {
1108     Effect.Methods[effect] = function(element, options){
1109       element = $(element);
1110       Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
1111       return element;
1112     }
1113   }
1114 );
1115
1116 $w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
1117   function(f) { Effect.Methods[f] = Element[f]; }
1118 );
1119
1120 Element.addMethods(Effect.Methods);