rails-1.1.6/public/javascripts/effects.js

   1 // Copyright (c) 2005 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 // See scriptaculous.js for full license.
   8
   9 // converts rgb() and #xxx to #xxxxxx format,
  10 // returns self (or first argument) if not convertable
  11 String.prototype.parseColor = function() {
  12   var color = '#';
  13   if(this.slice(0,4) == 'rgb(') {
  14     var cols = this.slice(4,this.length-1).split(',');
  15     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  16   } else {
  17     if(this.slice(0,1) == '#') {
  18       if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
  19       if(this.length==7) color = this.toLowerCase();
  20     }
  21   }
  22   return(color.length==7 ? color : (arguments[0] || this));
  23 }
  24
  25 /*--------------------------------------------------------------------------*/
  26
  27 Element.collectTextNodes = function(element) {
  28   return $A($(element).childNodes).collect( function(node) {
  29     return (node.nodeType==3 ? node.nodeValue :
  30       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  31   }).flatten().join('');
  32 }
  33
  34 Element.collectTextNodesIgnoreClass = function(element, className) {
  35   return $A($(element).childNodes).collect( function(node) {
  36     return (node.nodeType==3 ? node.nodeValue :
  37       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
  38         Element.collectTextNodesIgnoreClass(node, className) : ''));
  39   }).flatten().join('');
  40 }
  41
  42 Element.setContentZoom = function(element, percent) {
  43   element = $(element);
  44   Element.setStyle(element, {fontSize: (percent/100) + 'em'});
  45   if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
  46 }
  47
  48 Element.getOpacity = function(element){
  49   var opacity;
  50   if (opacity = Element.getStyle(element, 'opacity'))
  51     return parseFloat(opacity);
  52   if (opacity = (Element.getStyle(element, 'filter') || '').match(/alpha\(opacity=(.*)\)/))
  53     if(opacity[1]) return parseFloat(opacity[1]) / 100;
  54   return 1.0;
  55 }
  56
  57 Element.setOpacity = function(element, value){
  58   element= $(element);
  59   if (value == 1){
  60     Element.setStyle(element, { opacity:
  61       (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ?
  62       0.999999 : null });
  63     if(/MSIE/.test(navigator.userAgent))
  64       Element.setStyle(element, {filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});
  65   } else {
  66     if(value < 0.00001) value = 0;
  67     Element.setStyle(element, {opacity: value});
  68     if(/MSIE/.test(navigator.userAgent))
  69      Element.setStyle(element,
  70        { filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'') +
  71                  'alpha(opacity='+value*100+')' });
  72   }
  73 }
  74
  75 Element.getInlineOpacity = function(element){
  76   return $(element).style.opacity || '';
  77 }
  78
  79 Element.childrenWithClassName = function(element, className, findFirst) {
  80   var classNameRegExp = new RegExp("(^|\\s)" + className + "(\\s|$)");
  81   var results = $A($(element).getElementsByTagName('*'))[findFirst ? 'detect' : 'select']( function(c) {
  82     return (c.className && c.className.match(classNameRegExp));
  83   });
  84   if(!results) results = [];
  85   return results;
  86 }
  87
  88 Element.forceRerendering = function(element) {
  89   try {
  90     element = $(element);
  91     var n = document.createTextNode(' ');
  92     element.appendChild(n);
  93     element.removeChild(n);
  94   } catch(e) { }
  95 };
  96
  97 /*--------------------------------------------------------------------------*/
  98
  99 Array.prototype.call = function() {
 100   var args = arguments;
 101   this.each(function(f){ f.apply(this, args) });
 102 }
 103
 104 /*--------------------------------------------------------------------------*/
 105
 106 var Effect = {
 107   tagifyText: function(element) {
 108     var tagifyStyle = 'position:relative';
 109     if(/MSIE/.test(navigator.userAgent)) tagifyStyle += ';zoom:1';
 110     element = $(element);
 111     $A(element.childNodes).each( function(child) {
 112       if(child.nodeType==3) {
 113         child.nodeValue.toArray().each( function(character) {
 114           element.insertBefore(
 115             Builder.node('span',{style: tagifyStyle},
 116               character == ' ' ? String.fromCharCode(160) : character),
 117               child);
 118         });
 119         Element.remove(child);
 120       }
 121     });
 122   },
 123   multiple: function(element, effect) {
 124     var elements;
 125     if(((typeof element == 'object') ||
 126         (typeof element == 'function')) &&
 127        (element.length))
 128       elements = element;
 129     else
 130       elements = $(element).childNodes;
 131
 132     var options = Object.extend({
 133       speed: 0.1,
 134       delay: 0.0
 135     }, arguments[2] || {});
 136     var masterDelay = options.delay;
 137
 138     $A(elements).each( function(element, index) {
 139       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
 140     });
 141   },
 142   PAIRS: {
 143     'slide':  ['SlideDown','SlideUp'],
 144     'blind':  ['BlindDown','BlindUp'],
 145     'appear': ['Appear','Fade']
 146   },
 147   toggle: function(element, effect) {
 148     element = $(element);
 149     effect = (effect || 'appear').toLowerCase();
 150     var options = Object.extend({
 151       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
 152     }, arguments[2] || {});
 153     Effect[element.visible() ?
 154       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
 155   }
 156 };
 157
 158 var Effect2 = Effect; // deprecated
 159
 160 /* ------------- transitions ------------- */
 161
 162 Effect.Transitions = {}
 163
 164 Effect.Transitions.linear = function(pos) {
 165   return pos;
 166 }
 167 Effect.Transitions.sinoidal = function(pos) {
 168   return (-Math.cos(pos*Math.PI)/2) + 0.5;
 169 }
 170 Effect.Transitions.reverse  = function(pos) {
 171   return 1-pos;
 172 }
 173 Effect.Transitions.flicker = function(pos) {
 174   return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
 175 }
 176 Effect.Transitions.wobble = function(pos) {
 177   return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
 178 }
 179 Effect.Transitions.pulse = function(pos) {
 180   return (Math.floor(pos*10) % 2 == 0 ?
 181     (pos*10-Math.floor(pos*10)) : 1-(pos*10-Math.floor(pos*10)));
 182 }
 183 Effect.Transitions.none = function(pos) {
 184   return 0;
 185 }
 186 Effect.Transitions.full = function(pos) {
 187   return 1;
 188 }
 189
 190 /* ------------- core effects ------------- */
 191
 192 Effect.ScopedQueue = Class.create();
 193 Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
 194   initialize: function() {
 195     this.effects  = [];
 196     this.interval = null;
 197   },
 198   _each: function(iterator) {
 199     this.effects._each(iterator);
 200   },
 201   add: function(effect) {
 202     var timestamp = new Date().getTime();
 203
 204     var position = (typeof effect.options.queue == 'string') ?
 205       effect.options.queue : effect.options.queue.position;
 206
 207     switch(position) {
 208       case 'front':
 209         // move unstarted effects after this effect
 210         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
 211             e.startOn  += effect.finishOn;
 212             e.finishOn += effect.finishOn;
 213           });
 214         break;
 215       case 'end':
 216         // start effect after last queued effect has finished
 217         timestamp = this.effects.pluck('finishOn').max() || timestamp;
 218         break;
 219     }
 220
 221     effect.startOn  += timestamp;
 222     effect.finishOn += timestamp;
 223
 224     if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
 225       this.effects.push(effect);
 226
 227     if(!this.interval)
 228       this.interval = setInterval(this.loop.bind(this), 40);
 229   },
 230   remove: function(effect) {
 231     this.effects = this.effects.reject(function(e) { return e==effect });
 232     if(this.effects.length == 0) {
 233       clearInterval(this.interval);
 234       this.interval = null;
 235     }
 236   },
 237   loop: function() {
 238     var timePos = new Date().getTime();
 239     this.effects.invoke('loop', timePos);
 240   }
 241 });
 242
 243 Effect.Queues = {
 244   instances: $H(),
 245   get: function(queueName) {
 246     if(typeof queueName != 'string') return queueName;
 247
 248     if(!this.instances[queueName])
 249       this.instances[queueName] = new Effect.ScopedQueue();
 250
 251     return this.instances[queueName];
 252   }
 253 }
 254 Effect.Queue = Effect.Queues.get('global');
 255
 256 Effect.DefaultOptions = {
 257   transition: Effect.Transitions.sinoidal,
 258   duration:   1.0,   // seconds
 259   fps:        25.0,  // max. 25fps due to Effect.Queue implementation
 260   sync:       false, // true for combining
 261   from:       0.0,
 262   to:         1.0,
 263   delay:      0.0,
 264   queue:      'parallel'
 265 }
 266
 267 Effect.Base = function() {};
 268 Effect.Base.prototype = {
 269   position: null,
 270   start: function(options) {
 271     this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});
 272     this.currentFrame = 0;
 273     this.state        = 'idle';
 274     this.startOn      = this.options.delay*1000;
 275     this.finishOn     = this.startOn + (this.options.duration*1000);
 276     this.event('beforeStart');
 277     if(!this.options.sync)
 278       Effect.Queues.get(typeof this.options.queue == 'string' ?
 279         'global' : this.options.queue.scope).add(this);
 280   },
 281   loop: function(timePos) {
 282     if(timePos >= this.startOn) {
 283       if(timePos >= this.finishOn) {
 284         this.render(1.0);
 285         this.cancel();
 286         this.event('beforeFinish');
 287         if(this.finish) this.finish();
 288         this.event('afterFinish');
 289         return;
 290       }
 291       var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);
 292       var frame = Math.round(pos * this.options.fps * this.options.duration);
 293       if(frame > this.currentFrame) {
 294         this.render(pos);
 295         this.currentFrame = frame;
 296       }
 297     }
 298   },
 299   render: function(pos) {
 300     if(this.state == 'idle') {
 301       this.state = 'running';
 302       this.event('beforeSetup');
 303       if(this.setup) this.setup();
 304       this.event('afterSetup');
 305     }
 306     if(this.state == 'running') {
 307       if(this.options.transition) pos = this.options.transition(pos);
 308       pos *= (this.options.to-this.options.from);
 309       pos += this.options.from;
 310       this.position = pos;
 311       this.event('beforeUpdate');
 312       if(this.update) this.update(pos);
 313       this.event('afterUpdate');
 314     }
 315   },
 316   cancel: function() {
 317     if(!this.options.sync)
 318       Effect.Queues.get(typeof this.options.queue == 'string' ?
 319         'global' : this.options.queue.scope).remove(this);
 320     this.state = 'finished';
 321   },
 322   event: function(eventName) {
 323     if(this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
 324     if(this.options[eventName]) this.options[eventName](this);
 325   },
 326   inspect: function() {
 327     return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
 328   }
 329 }
 330
 331 Effect.Parallel = Class.create();
 332 Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {
 333   initialize: function(effects) {
 334     this.effects = effects || [];
 335     this.start(arguments[1]);
 336   },
 337   update: function(position) {
 338     this.effects.invoke('render', position);
 339   },
 340   finish: function(position) {
 341     this.effects.each( function(effect) {
 342       effect.render(1.0);
 343       effect.cancel();
 344       effect.event('beforeFinish');
 345       if(effect.finish) effect.finish(position);
 346       effect.event('afterFinish');
 347     });
 348   }
 349 });
 350
 351 Effect.Opacity = Class.create();
 352 Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {
 353   initialize: function(element) {
 354     this.element = $(element);
 355     // make this work on IE on elements without 'layout'
 356     if(/MSIE/.test(navigator.userAgent) && (!this.element.hasLayout))
 357       this.element.setStyle({zoom: 1});
 358     var options = Object.extend({
 359       from: this.element.getOpacity() || 0.0,
 360       to:   1.0
 361     }, arguments[1] || {});
 362     this.start(options);
 363   },
 364   update: function(position) {
 365     this.element.setOpacity(position);
 366   }
 367 });
 368
 369 Effect.Move = Class.create();
 370 Object.extend(Object.extend(Effect.Move.prototype, Effect.Base.prototype), {
 371   initialize: function(element) {
 372     this.element = $(element);
 373     var options = Object.extend({
 374       x:    0,
 375       y:    0,
 376       mode: 'relative'
 377     }, arguments[1] || {});
 378     this.start(options);
 379   },
 380   setup: function() {
 381     // Bug in Opera: Opera returns the "real" position of a static element or
 382     // relative element that does not have top/left explicitly set.
 383     // ==> Always set top and left for position relative elements in your stylesheets
 384     // (to 0 if you do not need them)
 385     this.element.makePositioned();
 386     this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
 387     this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
 388     if(this.options.mode == 'absolute') {
 389       // absolute movement, so we need to calc deltaX and deltaY
 390       this.options.x = this.options.x - this.originalLeft;
 391       this.options.y = this.options.y - this.originalTop;
 392     }
 393   },
 394   update: function(position) {
 395     this.element.setStyle({
 396       left: this.options.x  * position + this.originalLeft + 'px',
 397       top:  this.options.y  * position + this.originalTop  + 'px'
 398     });
 399   }
 400 });
 401
 402 // for backwards compatibility
 403 Effect.MoveBy = function(element, toTop, toLeft) {
 404   return new Effect.Move(element,
 405     Object.extend({ x: toLeft, y: toTop }, arguments[3] || {}));
 406 };
 407
 408 Effect.Scale = Class.create();
 409 Object.extend(Object.extend(Effect.Scale.prototype, Effect.Base.prototype), {
 410   initialize: function(element, percent) {
 411     this.element = $(element)
 412     var options = Object.extend({
 413       scaleX: true,
 414       scaleY: true,
 415       scaleContent: true,
 416       scaleFromCenter: false,
 417       scaleMode: 'box',        // 'box' or 'contents' or {} with provided values
 418       scaleFrom: 100.0,
 419       scaleTo:   percent
 420     }, arguments[2] || {});
 421     this.start(options);
 422   },
 423   setup: function() {
 424     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
 425     this.elementPositioning = this.element.getStyle('position');
 426
 427     this.originalStyle = {};
 428     ['top','left','width','height','fontSize'].each( function(k) {
 429       this.originalStyle[k] = this.element.style[k];
 430     }.bind(this));
 431
 432     this.originalTop  = this.element.offsetTop;
 433     this.originalLeft = this.element.offsetLeft;
 434
 435     var fontSize = this.element.getStyle('font-size') || '100%';
 436     ['em','px','%'].each( function(fontSizeType) {
 437       if(fontSize.indexOf(fontSizeType)>0) {
 438         this.fontSize     = parseFloat(fontSize);
 439         this.fontSizeType = fontSizeType;
 440       }
 441     }.bind(this));
 442
 443     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
 444
 445     this.dims = null;
 446     if(this.options.scaleMode=='box')
 447       this.dims = [this.element.offsetHeight, this.element.offsetWidth];
 448     if(/^content/.test(this.options.scaleMode))
 449       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
 450     if(!this.dims)
 451       this.dims = [this.options.scaleMode.originalHeight,
 452                    this.options.scaleMode.originalWidth];
 453   },
 454   update: function(position) {
 455     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
 456     if(this.options.scaleContent && this.fontSize)
 457       this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
 458     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
 459   },
 460   finish: function(position) {
 461     if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
 462   },
 463   setDimensions: function(height, width) {
 464     var d = {};
 465     if(this.options.scaleX) d.width = width + 'px';
 466     if(this.options.scaleY) d.height = height + 'px';
 467     if(this.options.scaleFromCenter) {
 468       var topd  = (height - this.dims[0])/2;
 469       var leftd = (width  - this.dims[1])/2;
 470       if(this.elementPositioning == 'absolute') {
 471         if(this.options.scaleY) d.top = this.originalTop-topd + 'px';
 472         if(this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
 473       } else {
 474         if(this.options.scaleY) d.top = -topd + 'px';
 475         if(this.options.scaleX) d.left = -leftd + 'px';
 476       }
 477     }
 478     this.element.setStyle(d);
 479   }
 480 });
 481
 482 Effect.Highlight = Class.create();
 483 Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype), {
 484   initialize: function(element) {
 485     this.element = $(element);
 486     var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || {});
 487     this.start(options);
 488   },
 489   setup: function() {
 490     // Prevent executing on elements not in the layout flow
 491     if(this.element.getStyle('display')=='none') { this.cancel(); return; }
 492     // Disable background image during the effect
 493     this.oldStyle = {
 494       backgroundImage: this.element.getStyle('background-image') };
 495     this.element.setStyle({backgroundImage: 'none'});
 496     if(!this.options.endcolor)
 497       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
 498     if(!this.options.restorecolor)
 499       this.options.restorecolor = this.element.getStyle('background-color');
 500     // init color calculations
 501     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
 502     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));
 503   },
 504   update: function(position) {
 505     this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
 506       return m+(Math.round(this._base[i]+(this._delta[i]*position)).toColorPart()); }.bind(this)) });
 507   },
 508   finish: function() {
 509     this.element.setStyle(Object.extend(this.oldStyle, {
 510       backgroundColor: this.options.restorecolor
 511     }));
 512   }
 513 });
 514
 515 Effect.ScrollTo = Class.create();
 516 Object.extend(Object.extend(Effect.ScrollTo.prototype, Effect.Base.prototype), {
 517   initialize: function(element) {
 518     this.element = $(element);
 519     this.start(arguments[1] || {});
 520   },
 521   setup: function() {
 522     Position.prepare();
 523     var offsets = Position.cumulativeOffset(this.element);
 524     if(this.options.offset) offsets[1] += this.options.offset;
 525     var max = window.innerHeight ?
 526       window.height - window.innerHeight :
 527       document.body.scrollHeight -
 528         (document.documentElement.clientHeight ?
 529           document.documentElement.clientHeight : document.body.clientHeight);
 530     this.scrollStart = Position.deltaY;
 531     this.delta = (offsets[1] > max ? max : offsets[1]) - this.scrollStart;
 532   },
 533   update: function(position) {
 534     Position.prepare();
 535     window.scrollTo(Position.deltaX,
 536       this.scrollStart + (position*this.delta));
 537   }
 538 });
 539
 540 /* ------------- combination effects ------------- */
 541
 542 Effect.Fade = function(element) {
 543   element = $(element);
 544   var oldOpacity = element.getInlineOpacity();
 545   var options = Object.extend({
 546   from: element.getOpacity() || 1.0,
 547   to:   0.0,
 548   afterFinishInternal: function(effect) {
 549     if(effect.options.to!=0) return;
 550     effect.element.hide();
 551     effect.element.setStyle({opacity: oldOpacity});
 552   }}, arguments[1] || {});
 553   return new Effect.Opacity(element,options);
 554 }
 555
 556 Effect.Appear = function(element) {
 557   element = $(element);
 558   var options = Object.extend({
 559   from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
 560   to:   1.0,
 561   // force Safari to render floated elements properly
 562   afterFinishInternal: function(effect) {
 563     effect.element.forceRerendering();
 564   },
 565   beforeSetup: function(effect) {
 566     effect.element.setOpacity(effect.options.from);
 567     effect.element.show();
 568   }}, arguments[1] || {});
 569   return new Effect.Opacity(element,options);
 570 }
 571
 572 Effect.Puff = function(element) {
 573   element = $(element);
 574   var oldStyle = { opacity: element.getInlineOpacity(), position: element.getStyle('position') };
 575   return new Effect.Parallel(
 576    [ new Effect.Scale(element, 200,
 577       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
 578      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
 579      Object.extend({ duration: 1.0,
 580       beforeSetupInternal: function(effect) {
 581         effect.effects[0].element.setStyle({position: 'absolute'}); },
 582       afterFinishInternal: function(effect) {
 583          effect.effects[0].element.hide();
 584          effect.effects[0].element.setStyle(oldStyle); }
 585      }, arguments[1] || {})
 586    );
 587 }
 588
 589 Effect.BlindUp = function(element) {
 590   element = $(element);
 591   element.makeClipping();
 592   return new Effect.Scale(element, 0,
 593     Object.extend({ scaleContent: false,
 594       scaleX: false,
 595       restoreAfterFinish: true,
 596       afterFinishInternal: function(effect) {
 597         effect.element.hide();
 598         effect.element.undoClipping();
 599       }
 600     }, arguments[1] || {})
 601   );
 602 }
 603
 604 Effect.BlindDown = function(element) {
 605   element = $(element);
 606   var elementDimensions = element.getDimensions();
 607   return new Effect.Scale(element, 100,
 608     Object.extend({ scaleContent: false,
 609       scaleX: false,
 610       scaleFrom: 0,
 611       scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 612       restoreAfterFinish: true,
 613       afterSetup: function(effect) {
 614         effect.element.makeClipping();
 615         effect.element.setStyle({height: '0px'});
 616         effect.element.show();
 617       },
 618       afterFinishInternal: function(effect) {
 619         effect.element.undoClipping();
 620       }
 621     }, arguments[1] || {})
 622   );
 623 }
 624
 625 Effect.SwitchOff = function(element) {
 626   element = $(element);
 627   var oldOpacity = element.getInlineOpacity();
 628   return new Effect.Appear(element, {
 629     duration: 0.4,
 630     from: 0,
 631     transition: Effect.Transitions.flicker,
 632     afterFinishInternal: function(effect) {
 633       new Effect.Scale(effect.element, 1, {
 634         duration: 0.3, scaleFromCenter: true,
 635         scaleX: false, scaleContent: false, restoreAfterFinish: true,
 636         beforeSetup: function(effect) {
 637           effect.element.makePositioned();
 638           effect.element.makeClipping();
 639         },
 640         afterFinishInternal: function(effect) {
 641           effect.element.hide();
 642           effect.element.undoClipping();
 643           effect.element.undoPositioned();
 644           effect.element.setStyle({opacity: oldOpacity});
 645         }
 646       })
 647     }
 648   });
 649 }
 650
 651 Effect.DropOut = function(element) {
 652   element = $(element);
 653   var oldStyle = {
 654     top: element.getStyle('top'),
 655     left: element.getStyle('left'),
 656     opacity: element.getInlineOpacity() };
 657   return new Effect.Parallel(
 658     [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
 659       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
 660     Object.extend(
 661       { duration: 0.5,
 662         beforeSetup: function(effect) {
 663           effect.effects[0].element.makePositioned();
 664         },
 665         afterFinishInternal: function(effect) {
 666           effect.effects[0].element.hide();
 667           effect.effects[0].element.undoPositioned();
 668           effect.effects[0].element.setStyle(oldStyle);
 669         }
 670       }, arguments[1] || {}));
 671 }
 672
 673 Effect.Shake = function(element) {
 674   element = $(element);
 675   var oldStyle = {
 676     top: element.getStyle('top'),
 677     left: element.getStyle('left') };
 678     return new Effect.Move(element,
 679       { x:  20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
 680     new Effect.Move(effect.element,
 681       { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
 682     new Effect.Move(effect.element,
 683       { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
 684     new Effect.Move(effect.element,
 685       { x: -40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
 686     new Effect.Move(effect.element,
 687       { x:  40, y: 0, duration: 0.1,  afterFinishInternal: function(effect) {
 688     new Effect.Move(effect.element,
 689       { x: -20, y: 0, duration: 0.05, afterFinishInternal: function(effect) {
 690         effect.element.undoPositioned();
 691         effect.element.setStyle(oldStyle);
 692   }}) }}) }}) }}) }}) }});
 693 }
 694
 695 Effect.SlideDown = function(element) {
 696   element = $(element);
 697   element.cleanWhitespace();
 698   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
 699   var oldInnerBottom = $(element.firstChild).getStyle('bottom');
 700   var elementDimensions = element.getDimensions();
 701   return new Effect.Scale(element, 100, Object.extend({
 702     scaleContent: false,
 703     scaleX: false,
 704     scaleFrom: 0,
 705     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 706     restoreAfterFinish: true,
 707     afterSetup: function(effect) {
 708       effect.element.makePositioned();
 709       effect.element.firstChild.makePositioned();
 710       if(window.opera) effect.element.setStyle({top: ''});
 711       effect.element.makeClipping();
 712       effect.element.setStyle({height: '0px'});
 713       effect.element.show(); },
 714     afterUpdateInternal: function(effect) {
 715       effect.element.firstChild.setStyle({bottom:
 716         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 717     },
 718     afterFinishInternal: function(effect) {
 719       effect.element.undoClipping();
 720       // IE will crash if child is undoPositioned first
 721       if(/MSIE/.test(navigator.userAgent)){
 722         effect.element.undoPositioned();
 723         effect.element.firstChild.undoPositioned();
 724       }else{
 725         effect.element.firstChild.undoPositioned();
 726         effect.element.undoPositioned();
 727       }
 728       effect.element.firstChild.setStyle({bottom: oldInnerBottom}); }
 729     }, arguments[1] || {})
 730   );
 731 }
 732
 733 Effect.SlideUp = function(element) {
 734   element = $(element);
 735   element.cleanWhitespace();
 736   var oldInnerBottom = $(element.firstChild).getStyle('bottom');
 737   return new Effect.Scale(element, 0,
 738    Object.extend({ scaleContent: false,
 739     scaleX: false,
 740     scaleMode: 'box',
 741     scaleFrom: 100,
 742     restoreAfterFinish: true,
 743     beforeStartInternal: function(effect) {
 744       effect.element.makePositioned();
 745       effect.element.firstChild.makePositioned();
 746       if(window.opera) effect.element.setStyle({top: ''});
 747       effect.element.makeClipping();
 748       effect.element.show(); },
 749     afterUpdateInternal: function(effect) {
 750       effect.element.firstChild.setStyle({bottom:
 751         (effect.dims[0] - effect.element.clientHeight) + 'px' }); },
 752     afterFinishInternal: function(effect) {
 753       effect.element.hide();
 754       effect.element.undoClipping();
 755       effect.element.firstChild.undoPositioned();
 756       effect.element.undoPositioned();
 757       effect.element.setStyle({bottom: oldInnerBottom}); }
 758    }, arguments[1] || {})
 759   );
 760 }
 761
 762 // Bug in opera makes the TD containing this element expand for a instance after finish
 763 Effect.Squish = function(element) {
 764   return new Effect.Scale(element, window.opera ? 1 : 0,
 765     { restoreAfterFinish: true,
 766       beforeSetup: function(effect) {
 767         effect.element.makeClipping(effect.element); },
 768       afterFinishInternal: function(effect) {
 769         effect.element.hide(effect.element);
 770         effect.element.undoClipping(effect.element); }
 771   });
 772 }
 773
 774 Effect.Grow = function(element) {
 775   element = $(element);
 776   var options = Object.extend({
 777     direction: 'center',
 778     moveTransition: Effect.Transitions.sinoidal,
 779     scaleTransition: Effect.Transitions.sinoidal,
 780     opacityTransition: Effect.Transitions.full
 781   }, arguments[1] || {});
 782   var oldStyle = {
 783     top: element.style.top,
 784     left: element.style.left,
 785     height: element.style.height,
 786     width: element.style.width,
 787     opacity: element.getInlineOpacity() };
 788
 789   var dims = element.getDimensions();
 790   var initialMoveX, initialMoveY;
 791   var moveX, moveY;
 792
 793   switch (options.direction) {
 794     case 'top-left':
 795       initialMoveX = initialMoveY = moveX = moveY = 0;
 796       break;
 797     case 'top-right':
 798       initialMoveX = dims.width;
 799       initialMoveY = moveY = 0;
 800       moveX = -dims.width;
 801       break;
 802     case 'bottom-left':
 803       initialMoveX = moveX = 0;
 804       initialMoveY = dims.height;
 805       moveY = -dims.height;
 806       break;
 807     case 'bottom-right':
 808       initialMoveX = dims.width;
 809       initialMoveY = dims.height;
 810       moveX = -dims.width;
 811       moveY = -dims.height;
 812       break;
 813     case 'center':
 814       initialMoveX = dims.width / 2;
 815       initialMoveY = dims.height / 2;
 816       moveX = -dims.width / 2;
 817       moveY = -dims.height / 2;
 818       break;
 819   }
 820
 821   return new Effect.Move(element, {
 822     x: initialMoveX,
 823     y: initialMoveY,
 824     duration: 0.01,
 825     beforeSetup: function(effect) {
 826       effect.element.hide();
 827       effect.element.makeClipping();
 828       effect.element.makePositioned();
 829     },
 830     afterFinishInternal: function(effect) {
 831       new Effect.Parallel(
 832         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
 833           new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
 834           new Effect.Scale(effect.element, 100, {
 835             scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
 836             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
 837         ], Object.extend({
 838              beforeSetup: function(effect) {
 839                effect.effects[0].element.setStyle({height: '0px'});
 840                effect.effects[0].element.show();
 841              },
 842              afterFinishInternal: function(effect) {
 843                effect.effects[0].element.undoClipping();
 844                effect.effects[0].element.undoPositioned();
 845                effect.effects[0].element.setStyle(oldStyle);
 846              }
 847            }, options)
 848       )
 849     }
 850   });
 851 }
 852
 853 Effect.Shrink = function(element) {
 854   element = $(element);
 855   var options = Object.extend({
 856     direction: 'center',
 857     moveTransition: Effect.Transitions.sinoidal,
 858     scaleTransition: Effect.Transitions.sinoidal,
 859     opacityTransition: Effect.Transitions.none
 860   }, arguments[1] || {});
 861   var oldStyle = {
 862     top: element.style.top,
 863     left: element.style.left,
 864     height: element.style.height,
 865     width: element.style.width,
 866     opacity: element.getInlineOpacity() };
 867
 868   var dims = element.getDimensions();
 869   var moveX, moveY;
 870
 871   switch (options.direction) {
 872     case 'top-left':
 873       moveX = moveY = 0;
 874       break;
 875     case 'top-right':
 876       moveX = dims.width;
 877       moveY = 0;
 878       break;
 879     case 'bottom-left':
 880       moveX = 0;
 881       moveY = dims.height;
 882       break;
 883     case 'bottom-right':
 884       moveX = dims.width;
 885       moveY = dims.height;
 886       break;
 887     case 'center':
 888       moveX = dims.width / 2;
 889       moveY = dims.height / 2;
 890       break;
 891   }
 892
 893   return new Effect.Parallel(
 894     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
 895       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
 896       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
 897     ], Object.extend({
 898          beforeStartInternal: function(effect) {
 899            effect.effects[0].element.makePositioned();
 900            effect.effects[0].element.makeClipping(); },
 901          afterFinishInternal: function(effect) {
 902            effect.effects[0].element.hide();
 903            effect.effects[0].element.undoClipping();
 904            effect.effects[0].element.undoPositioned();
 905            effect.effects[0].element.setStyle(oldStyle); }
 906        }, options)
 907   );
 908 }
 909
 910 Effect.Pulsate = function(element) {
 911   element = $(element);
 912   var options    = arguments[1] || {};
 913   var oldOpacity = element.getInlineOpacity();
 914   var transition = options.transition || Effect.Transitions.sinoidal;
 915   var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos)) };
 916   reverser.bind(transition);
 917   return new Effect.Opacity(element,
 918     Object.extend(Object.extend({  duration: 3.0, from: 0,
 919       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
 920     }, options), {transition: reverser}));
 921 }
 922
 923 Effect.Fold = function(element) {
 924   element = $(element);
 925   var oldStyle = {
 926     top: element.style.top,
 927     left: element.style.left,
 928     width: element.style.width,
 929     height: element.style.height };
 930   Element.makeClipping(element);
 931   return new Effect.Scale(element, 5, Object.extend({
 932     scaleContent: false,
 933     scaleX: false,
 934     afterFinishInternal: function(effect) {
 935     new Effect.Scale(element, 1, {
 936       scaleContent: false,
 937       scaleY: false,
 938       afterFinishInternal: function(effect) {
 939         effect.element.hide();
 940         effect.element.undoClipping();
 941         effect.element.setStyle(oldStyle);
 942       } });
 943   }}, arguments[1] || {}));
 944 };
 945
 946 ['setOpacity','getOpacity','getInlineOpacity','forceRerendering','setContentZoom',
 947  'collectTextNodes','collectTextNodesIgnoreClass','childrenWithClassName'].each(
 948   function(f) { Element.Methods[f] = Element[f]; }
 949 );
 950
 951 Element.Methods.visualEffect = function(element, effect, options) {
 952   s = effect.gsub(/_/, '-').camelize();
 953   effect_class = s.charAt(0).toUpperCase() + s.substring(1);
 954   new Effect[effect_class](element, options);
 955   return $(element);
 956 };
 957
 958 Element.addMethods();