lib/scriptaculous/effects.js

   1 // script.aculo.us effects.js v1.9.0, Thu Dec 23 16:54:48 -0500 2010
   2
   3 // Copyright (c) 2005-2010 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
   4 // Contributors:
   5 //  Justin Palmer (http://encytemedia.com/)
   6 //  Mark Pilgrim (http://diveintomark.org/)
   7 //  Martin Bialasinki
   8 //
   9 // script.aculo.us is freely distributable under the terms of an MIT-style license.
  10 // For details, see the script.aculo.us web site: http://script.aculo.us/
  11
  12 // converts rgb() and #xxx to #xxxxxx format,
  13 // returns self (or first argument) if not convertable
  14 String.prototype.parseColor = function() {
  15   var color = '#';
  16   if (this.slice(0,4) == 'rgb(') {
  17     var cols = this.slice(4,this.length-1).split(',');
  18     var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  19   } else {
  20     if (this.slice(0,1) == '#') {
  21       if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
  22       if (this.length==7) color = this.toLowerCase();
  23     }
  24   }
  25   return (color.length==7 ? color : (arguments[0] || this));
  26 };
  27
  28 /*--------------------------------------------------------------------------*/
  29
  30 Element.collectTextNodes = function(element) {
  31   return $A($(element).childNodes).collect( function(node) {
  32     return (node.nodeType==3 ? node.nodeValue :
  33       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  34   }).flatten().join('');
  35 };
  36
  37 Element.collectTextNodesIgnoreClass = function(element, className) {
  38   return $A($(element).childNodes).collect( function(node) {
  39     return (node.nodeType==3 ? node.nodeValue :
  40       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
  41         Element.collectTextNodesIgnoreClass(node, className) : ''));
  42   }).flatten().join('');
  43 };
  44
  45 Element.setContentZoom = function(element, percent) {
  46   element = $(element);
  47   element.setStyle({fontSize: (percent/100) + 'em'});
  48   if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  49   return element;
  50 };
  51
  52 Element.getInlineOpacity = function(element){
  53   return $(element).style.opacity || '';
  54 };
  55
  56 Element.forceRerendering = function(element) {
  57   try {
  58     element = $(element);
  59     var n = document.createTextNode(' ');
  60     element.appendChild(n);
  61     element.removeChild(n);
  62   } catch(e) { }
  63 };
  64
  65 /*--------------------------------------------------------------------------*/
  66
  67 var Effect = {
  68   _elementDoesNotExistError: {
  69     name: 'ElementDoesNotExistError',
  70     message: 'The specified DOM element does not exist, but is required for this effect to operate'
  71   },
  72   Transitions: {
  73     linear: Prototype.K,
  74     sinoidal: function(pos) {
  75       return (-Math.cos(pos*Math.PI)/2) + .5;
  76     },
  77     reverse: function(pos) {
  78       return 1-pos;
  79     },
  80     flicker: function(pos) {
  81       var pos = ((-Math.cos(pos*Math.PI)/4) + .75) + Math.random()/4;
  82       return pos > 1 ? 1 : pos;
  83     },
  84     wobble: function(pos) {
  85       return (-Math.cos(pos*Math.PI*(9*pos))/2) + .5;
  86     },
  87     pulse: function(pos, pulses) {
  88       return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
  89     },
  90     spring: function(pos) {
  91       return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
  92     },
  93     none: function(pos) {
  94       return 0;
  95     },
  96     full: function(pos) {
  97       return 1;
  98     }
  99   },
 100   DefaultOptions: {
 101     duration:   1.0,   // seconds
 102     fps:        100,   // 100= assume 66fps max.
 103     sync:       false, // true for combining
 104     from:       0.0,
 105     to:         1.0,
 106     delay:      0.0,
 107     queue:      'parallel'
 108   },
 109   tagifyText: function(element) {
 110     var tagifyStyle = 'position:relative';
 111     if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
 112
 113     element = $(element);
 114     $A(element.childNodes).each( function(child) {
 115       if (child.nodeType==3) {
 116         child.nodeValue.toArray().each( function(character) {
 117           element.insertBefore(
 118             new Element('span', {style: tagifyStyle}).update(
 119               character == ' ' ? String.fromCharCode(160) : character),
 120               child);
 121         });
 122         Element.remove(child);
 123       }
 124     });
 125   },
 126   multiple: function(element, effect) {
 127     var elements;
 128     if (((typeof element == 'object') ||
 129         Object.isFunction(element)) &&
 130        (element.length))
 131       elements = element;
 132     else
 133       elements = $(element).childNodes;
 134
 135     var options = Object.extend({
 136       speed: 0.1,
 137       delay: 0.0
 138     }, arguments[2] || { });
 139     var masterDelay = options.delay;
 140
 141     $A(elements).each( function(element, index) {
 142       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
 143     });
 144   },
 145   PAIRS: {
 146     'slide':  ['SlideDown','SlideUp'],
 147     'blind':  ['BlindDown','BlindUp'],
 148     'appear': ['Appear','Fade']
 149   },
 150   toggle: function(element, effect, options) {
 151     element = $(element);
 152     effect  = (effect || 'appear').toLowerCase();
 153
 154     return Effect[ Effect.PAIRS[ effect ][ element.visible() ? 1 : 0 ] ](element, Object.extend({
 155       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
 156     }, options || {}));
 157   }
 158 };
 159
 160 Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
 161
 162 /* ------------- core effects ------------- */
 163
 164 Effect.ScopedQueue = Class.create(Enumerable, {
 165   initialize: function() {
 166     this.effects  = [];
 167     this.interval = null;
 168   },
 169   _each: function(iterator) {
 170     this.effects._each(iterator);
 171   },
 172   add: function(effect) {
 173     var timestamp = new Date().getTime();
 174
 175     var position = Object.isString(effect.options.queue) ?
 176       effect.options.queue : effect.options.queue.position;
 177
 178     switch(position) {
 179       case 'front':
 180         // move unstarted effects after this effect
 181         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
 182             e.startOn  += effect.finishOn;
 183             e.finishOn += effect.finishOn;
 184           });
 185         break;
 186       case 'with-last':
 187         timestamp = this.effects.pluck('startOn').max() || timestamp;
 188         break;
 189       case 'end':
 190         // start effect after last queued effect has finished
 191         timestamp = this.effects.pluck('finishOn').max() || timestamp;
 192         break;
 193     }
 194
 195     effect.startOn  += timestamp;
 196     effect.finishOn += timestamp;
 197
 198     if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
 199       this.effects.push(effect);
 200
 201     if (!this.interval)
 202       this.interval = setInterval(this.loop.bind(this), 15);
 203   },
 204   remove: function(effect) {
 205     this.effects = this.effects.reject(function(e) { return e==effect });
 206     if (this.effects.length == 0) {
 207       clearInterval(this.interval);
 208       this.interval = null;
 209     }
 210   },
 211   loop: function() {
 212     var timePos = new Date().getTime();
 213     for(var i=0, len=this.effects.length;i<len;i++)
 214       this.effects[i] && this.effects[i].loop(timePos);
 215   }
 216 });
 217
 218 Effect.Queues = {
 219   instances: $H(),
 220   get: function(queueName) {
 221     if (!Object.isString(queueName)) return queueName;
 222
 223     return this.instances.get(queueName) ||
 224       this.instances.set(queueName, new Effect.ScopedQueue());
 225   }
 226 };
 227 Effect.Queue = Effect.Queues.get('global');
 228
 229 Effect.Base = Class.create({
 230   position: null,
 231   start: function(options) {
 232     if (options && options.transition === false) options.transition = Effect.Transitions.linear;
 233     this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
 234     this.currentFrame = 0;
 235     this.state        = 'idle';
 236     this.startOn      = this.options.delay*1000;
 237     this.finishOn     = this.startOn+(this.options.duration*1000);
 238     this.fromToDelta  = this.options.to-this.options.from;
 239     this.totalTime    = this.finishOn-this.startOn;
 240     this.totalFrames  = this.options.fps*this.options.duration;
 241
 242     this.render = (function() {
 243       function dispatch(effect, eventName) {
 244         if (effect.options[eventName + 'Internal'])
 245           effect.options[eventName + 'Internal'](effect);
 246         if (effect.options[eventName])
 247           effect.options[eventName](effect);
 248       }
 249
 250       return function(pos) {
 251         if (this.state === "idle") {
 252           this.state = "running";
 253           dispatch(this, 'beforeSetup');
 254           if (this.setup) this.setup();
 255           dispatch(this, 'afterSetup');
 256         }
 257         if (this.state === "running") {
 258           pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
 259           this.position = pos;
 260           dispatch(this, 'beforeUpdate');
 261           if (this.update) this.update(pos);
 262           dispatch(this, 'afterUpdate');
 263         }
 264       };
 265     })();
 266
 267     this.event('beforeStart');
 268     if (!this.options.sync)
 269       Effect.Queues.get(Object.isString(this.options.queue) ?
 270         'global' : this.options.queue.scope).add(this);
 271   },
 272   loop: function(timePos) {
 273     if (timePos >= this.startOn) {
 274       if (timePos >= this.finishOn) {
 275         this.render(1.0);
 276         this.cancel();
 277         this.event('beforeFinish');
 278         if (this.finish) this.finish();
 279         this.event('afterFinish');
 280         return;
 281       }
 282       var pos   = (timePos - this.startOn) / this.totalTime,
 283           frame = (pos * this.totalFrames).round();
 284       if (frame > this.currentFrame) {
 285         this.render(pos);
 286         this.currentFrame = frame;
 287       }
 288     }
 289   },
 290   cancel: function() {
 291     if (!this.options.sync)
 292       Effect.Queues.get(Object.isString(this.options.queue) ?
 293         'global' : this.options.queue.scope).remove(this);
 294     this.state = 'finished';
 295   },
 296   event: function(eventName) {
 297     if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
 298     if (this.options[eventName]) this.options[eventName](this);
 299   },
 300   inspect: function() {
 301     var data = $H();
 302     for(property in this)
 303       if (!Object.isFunction(this[property])) data.set(property, this[property]);
 304     return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
 305   }
 306 });
 307
 308 Effect.Parallel = Class.create(Effect.Base, {
 309   initialize: function(effects) {
 310     this.effects = effects || [];
 311     this.start(arguments[1]);
 312   },
 313   update: function(position) {
 314     this.effects.invoke('render', position);
 315   },
 316   finish: function(position) {
 317     this.effects.each( function(effect) {
 318       effect.render(1.0);
 319       effect.cancel();
 320       effect.event('beforeFinish');
 321       if (effect.finish) effect.finish(position);
 322       effect.event('afterFinish');
 323     });
 324   }
 325 });
 326
 327 Effect.Tween = Class.create(Effect.Base, {
 328   initialize: function(object, from, to) {
 329     object = Object.isString(object) ? $(object) : object;
 330     var args = $A(arguments), method = args.last(),
 331       options = args.length == 5 ? args[3] : null;
 332     this.method = Object.isFunction(method) ? method.bind(object) :
 333       Object.isFunction(object[method]) ? object[method].bind(object) :
 334       function(value) { object[method] = value };
 335     this.start(Object.extend({ from: from, to: to }, options || { }));
 336   },
 337   update: function(position) {
 338     this.method(position);
 339   }
 340 });
 341
 342 Effect.Event = Class.create(Effect.Base, {
 343   initialize: function() {
 344     this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
 345   },
 346   update: Prototype.emptyFunction
 347 });
 348
 349 Effect.Opacity = Class.create(Effect.Base, {
 350   initialize: function(element) {
 351     this.element = $(element);
 352     if (!this.element) throw(Effect._elementDoesNotExistError);
 353     // make this work on IE on elements without 'layout'
 354     if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
 355       this.element.setStyle({zoom: 1});
 356     var options = Object.extend({
 357       from: this.element.getOpacity() || 0.0,
 358       to:   1.0
 359     }, arguments[1] || { });
 360     this.start(options);
 361   },
 362   update: function(position) {
 363     this.element.setOpacity(position);
 364   }
 365 });
 366
 367 Effect.Move = Class.create(Effect.Base, {
 368   initialize: function(element) {
 369     this.element = $(element);
 370     if (!this.element) throw(Effect._elementDoesNotExistError);
 371     var options = Object.extend({
 372       x:    0,
 373       y:    0,
 374       mode: 'relative'
 375     }, arguments[1] || { });
 376     this.start(options);
 377   },
 378   setup: function() {
 379     this.element.makePositioned();
 380     this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
 381     this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
 382     if (this.options.mode == 'absolute') {
 383       this.options.x = this.options.x - this.originalLeft;
 384       this.options.y = this.options.y - this.originalTop;
 385     }
 386   },
 387   update: function(position) {
 388     this.element.setStyle({
 389       left: (this.options.x  * position + this.originalLeft).round() + 'px',
 390       top:  (this.options.y  * position + this.originalTop).round()  + 'px'
 391     });
 392   }
 393 });
 394
 395 // for backwards compatibility
 396 Effect.MoveBy = function(element, toTop, toLeft) {
 397   return new Effect.Move(element,
 398     Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
 399 };
 400
 401 Effect.Scale = Class.create(Effect.Base, {
 402   initialize: function(element, percent) {
 403     this.element = $(element);
 404     if (!this.element) throw(Effect._elementDoesNotExistError);
 405     var options = Object.extend({
 406       scaleX: true,
 407       scaleY: true,
 408       scaleContent: true,
 409       scaleFromCenter: false,
 410       scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
 411       scaleFrom: 100.0,
 412       scaleTo:   percent
 413     }, arguments[2] || { });
 414     this.start(options);
 415   },
 416   setup: function() {
 417     this.restoreAfterFinish = this.options.restoreAfterFinish || false;
 418     this.elementPositioning = this.element.getStyle('position');
 419
 420     this.originalStyle = { };
 421     ['top','left','width','height','fontSize'].each( function(k) {
 422       this.originalStyle[k] = this.element.style[k];
 423     }.bind(this));
 424
 425     this.originalTop  = this.element.offsetTop;
 426     this.originalLeft = this.element.offsetLeft;
 427
 428     var fontSize = this.element.getStyle('font-size') || '100%';
 429     ['em','px','%','pt'].each( function(fontSizeType) {
 430       if (fontSize.indexOf(fontSizeType)>0) {
 431         this.fontSize     = parseFloat(fontSize);
 432         this.fontSizeType = fontSizeType;
 433       }
 434     }.bind(this));
 435
 436     this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
 437
 438     this.dims = null;
 439     if (this.options.scaleMode=='box')
 440       this.dims = [this.element.offsetHeight, this.element.offsetWidth];
 441     if (/^content/.test(this.options.scaleMode))
 442       this.dims = [this.element.scrollHeight, this.element.scrollWidth];
 443     if (!this.dims)
 444       this.dims = [this.options.scaleMode.originalHeight,
 445                    this.options.scaleMode.originalWidth];
 446   },
 447   update: function(position) {
 448     var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
 449     if (this.options.scaleContent && this.fontSize)
 450       this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
 451     this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
 452   },
 453   finish: function(position) {
 454     if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
 455   },
 456   setDimensions: function(height, width) {
 457     var d = { };
 458     if (this.options.scaleX) d.width = width.round() + 'px';
 459     if (this.options.scaleY) d.height = height.round() + 'px';
 460     if (this.options.scaleFromCenter) {
 461       var topd  = (height - this.dims[0])/2;
 462       var leftd = (width  - this.dims[1])/2;
 463       if (this.elementPositioning == 'absolute') {
 464         if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
 465         if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
 466       } else {
 467         if (this.options.scaleY) d.top = -topd + 'px';
 468         if (this.options.scaleX) d.left = -leftd + 'px';
 469       }
 470     }
 471     this.element.setStyle(d);
 472   }
 473 });
 474
 475 Effect.Highlight = Class.create(Effect.Base, {
 476   initialize: function(element) {
 477     this.element = $(element);
 478     if (!this.element) throw(Effect._elementDoesNotExistError);
 479     var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
 480     this.start(options);
 481   },
 482   setup: function() {
 483     // Prevent executing on elements not in the layout flow
 484     if (this.element.getStyle('display')=='none') { this.cancel(); return; }
 485     // Disable background image during the effect
 486     this.oldStyle = { };
 487     if (!this.options.keepBackgroundImage) {
 488       this.oldStyle.backgroundImage = this.element.getStyle('background-image');
 489       this.element.setStyle({backgroundImage: 'none'});
 490     }
 491     if (!this.options.endcolor)
 492       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
 493     if (!this.options.restorecolor)
 494       this.options.restorecolor = this.element.getStyle('background-color');
 495     // init color calculations
 496     this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
 497     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));
 498   },
 499   update: function(position) {
 500     this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
 501       return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
 502   },
 503   finish: function() {
 504     this.element.setStyle(Object.extend(this.oldStyle, {
 505       backgroundColor: this.options.restorecolor
 506     }));
 507   }
 508 });
 509
 510 Effect.ScrollTo = function(element) {
 511   var options = arguments[1] || { },
 512   scrollOffsets = document.viewport.getScrollOffsets(),
 513   elementOffsets = $(element).cumulativeOffset();
 514
 515   if (options.offset) elementOffsets[1] += options.offset;
 516
 517   return new Effect.Tween(null,
 518     scrollOffsets.top,
 519     elementOffsets[1],
 520     options,
 521     function(p){ scrollTo(scrollOffsets.left, p.round()); }
 522   );
 523 };
 524
 525 /* ------------- combination effects ------------- */
 526
 527 Effect.Fade = function(element) {
 528   element = $(element);
 529   var oldOpacity = element.getInlineOpacity();
 530   var options = Object.extend({
 531     from: element.getOpacity() || 1.0,
 532     to:   0.0,
 533     afterFinishInternal: function(effect) {
 534       if (effect.options.to!=0) return;
 535       effect.element.hide().setStyle({opacity: oldOpacity});
 536     }
 537   }, arguments[1] || { });
 538   return new Effect.Opacity(element,options);
 539 };
 540
 541 Effect.Appear = function(element) {
 542   element = $(element);
 543   var options = Object.extend({
 544   from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
 545   to:   1.0,
 546   // force Safari to render floated elements properly
 547   afterFinishInternal: function(effect) {
 548     effect.element.forceRerendering();
 549   },
 550   beforeSetup: function(effect) {
 551     effect.element.setOpacity(effect.options.from).show();
 552   }}, arguments[1] || { });
 553   return new Effect.Opacity(element,options);
 554 };
 555
 556 Effect.Puff = function(element) {
 557   element = $(element);
 558   var oldStyle = {
 559     opacity: element.getInlineOpacity(),
 560     position: element.getStyle('position'),
 561     top:  element.style.top,
 562     left: element.style.left,
 563     width: element.style.width,
 564     height: element.style.height
 565   };
 566   return new Effect.Parallel(
 567    [ new Effect.Scale(element, 200,
 568       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
 569      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
 570      Object.extend({ duration: 1.0,
 571       beforeSetupInternal: function(effect) {
 572         Position.absolutize(effect.effects[0].element);
 573       },
 574       afterFinishInternal: function(effect) {
 575          effect.effects[0].element.hide().setStyle(oldStyle); }
 576      }, arguments[1] || { })
 577    );
 578 };
 579
 580 Effect.BlindUp = function(element) {
 581   element = $(element);
 582   element.makeClipping();
 583   return new Effect.Scale(element, 0,
 584     Object.extend({ scaleContent: false,
 585       scaleX: false,
 586       restoreAfterFinish: true,
 587       afterFinishInternal: function(effect) {
 588         effect.element.hide().undoClipping();
 589       }
 590     }, arguments[1] || { })
 591   );
 592 };
 593
 594 Effect.BlindDown = function(element) {
 595   element = $(element);
 596   var elementDimensions = element.getDimensions();
 597   return new Effect.Scale(element, 100, Object.extend({
 598     scaleContent: false,
 599     scaleX: false,
 600     scaleFrom: 0,
 601     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 602     restoreAfterFinish: true,
 603     afterSetup: function(effect) {
 604       effect.element.makeClipping().setStyle({height: '0px'}).show();
 605     },
 606     afterFinishInternal: function(effect) {
 607       effect.element.undoClipping();
 608     }
 609   }, arguments[1] || { }));
 610 };
 611
 612 Effect.SwitchOff = function(element) {
 613   element = $(element);
 614   var oldOpacity = element.getInlineOpacity();
 615   return new Effect.Appear(element, Object.extend({
 616     duration: 0.4,
 617     from: 0,
 618     transition: Effect.Transitions.flicker,
 619     afterFinishInternal: function(effect) {
 620       new Effect.Scale(effect.element, 1, {
 621         duration: 0.3, scaleFromCenter: true,
 622         scaleX: false, scaleContent: false, restoreAfterFinish: true,
 623         beforeSetup: function(effect) {
 624           effect.element.makePositioned().makeClipping();
 625         },
 626         afterFinishInternal: function(effect) {
 627           effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
 628         }
 629       });
 630     }
 631   }, arguments[1] || { }));
 632 };
 633
 634 Effect.DropOut = function(element) {
 635   element = $(element);
 636   var oldStyle = {
 637     top: element.getStyle('top'),
 638     left: element.getStyle('left'),
 639     opacity: element.getInlineOpacity() };
 640   return new Effect.Parallel(
 641     [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
 642       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
 643     Object.extend(
 644       { duration: 0.5,
 645         beforeSetup: function(effect) {
 646           effect.effects[0].element.makePositioned();
 647         },
 648         afterFinishInternal: function(effect) {
 649           effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
 650         }
 651       }, arguments[1] || { }));
 652 };
 653
 654 Effect.Shake = function(element) {
 655   element = $(element);
 656   var options = Object.extend({
 657     distance: 20,
 658     duration: 0.5
 659   }, arguments[1] || {});
 660   var distance = parseFloat(options.distance);
 661   var split = parseFloat(options.duration) / 10.0;
 662   var oldStyle = {
 663     top: element.getStyle('top'),
 664     left: element.getStyle('left') };
 665     return new Effect.Move(element,
 666       { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
 667     new Effect.Move(effect.element,
 668       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 669     new Effect.Move(effect.element,
 670       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 671     new Effect.Move(effect.element,
 672       { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 673     new Effect.Move(effect.element,
 674       { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 675     new Effect.Move(effect.element,
 676       { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
 677         effect.element.undoPositioned().setStyle(oldStyle);
 678   }}); }}); }}); }}); }}); }});
 679 };
 680
 681 Effect.SlideDown = function(element) {
 682   element = $(element).cleanWhitespace();
 683   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
 684   var oldInnerBottom = element.down().getStyle('bottom');
 685   var elementDimensions = element.getDimensions();
 686   return new Effect.Scale(element, 100, Object.extend({
 687     scaleContent: false,
 688     scaleX: false,
 689     scaleFrom: window.opera ? 0 : 1,
 690     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 691     restoreAfterFinish: true,
 692     afterSetup: function(effect) {
 693       effect.element.makePositioned();
 694       effect.element.down().makePositioned();
 695       if (window.opera) effect.element.setStyle({top: ''});
 696       effect.element.makeClipping().setStyle({height: '0px'}).show();
 697     },
 698     afterUpdateInternal: function(effect) {
 699       effect.element.down().setStyle({bottom:
 700         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 701     },
 702     afterFinishInternal: function(effect) {
 703       effect.element.undoClipping().undoPositioned();
 704       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
 705     }, arguments[1] || { })
 706   );
 707 };
 708
 709 Effect.SlideUp = function(element) {
 710   element = $(element).cleanWhitespace();
 711   var oldInnerBottom = element.down().getStyle('bottom');
 712   var elementDimensions = element.getDimensions();
 713   return new Effect.Scale(element, window.opera ? 0 : 1,
 714    Object.extend({ scaleContent: false,
 715     scaleX: false,
 716     scaleMode: 'box',
 717     scaleFrom: 100,
 718     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 719     restoreAfterFinish: true,
 720     afterSetup: function(effect) {
 721       effect.element.makePositioned();
 722       effect.element.down().makePositioned();
 723       if (window.opera) effect.element.setStyle({top: ''});
 724       effect.element.makeClipping().show();
 725     },
 726     afterUpdateInternal: function(effect) {
 727       effect.element.down().setStyle({bottom:
 728         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 729     },
 730     afterFinishInternal: function(effect) {
 731       effect.element.hide().undoClipping().undoPositioned();
 732       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
 733     }
 734    }, arguments[1] || { })
 735   );
 736 };
 737
 738 // Bug in opera makes the TD containing this element expand for a instance after finish
 739 Effect.Squish = function(element) {
 740   return new Effect.Scale(element, window.opera ? 1 : 0, {
 741     restoreAfterFinish: true,
 742     beforeSetup: function(effect) {
 743       effect.element.makeClipping();
 744     },
 745     afterFinishInternal: function(effect) {
 746       effect.element.hide().undoClipping();
 747     }
 748   });
 749 };
 750
 751 Effect.Grow = function(element) {
 752   element = $(element);
 753   var options = Object.extend({
 754     direction: 'center',
 755     moveTransition: Effect.Transitions.sinoidal,
 756     scaleTransition: Effect.Transitions.sinoidal,
 757     opacityTransition: Effect.Transitions.full
 758   }, arguments[1] || { });
 759   var oldStyle = {
 760     top: element.style.top,
 761     left: element.style.left,
 762     height: element.style.height,
 763     width: element.style.width,
 764     opacity: element.getInlineOpacity() };
 765
 766   var dims = element.getDimensions();
 767   var initialMoveX, initialMoveY;
 768   var moveX, moveY;
 769
 770   switch (options.direction) {
 771     case 'top-left':
 772       initialMoveX = initialMoveY = moveX = moveY = 0;
 773       break;
 774     case 'top-right':
 775       initialMoveX = dims.width;
 776       initialMoveY = moveY = 0;
 777       moveX = -dims.width;
 778       break;
 779     case 'bottom-left':
 780       initialMoveX = moveX = 0;
 781       initialMoveY = dims.height;
 782       moveY = -dims.height;
 783       break;
 784     case 'bottom-right':
 785       initialMoveX = dims.width;
 786       initialMoveY = dims.height;
 787       moveX = -dims.width;
 788       moveY = -dims.height;
 789       break;
 790     case 'center':
 791       initialMoveX = dims.width / 2;
 792       initialMoveY = dims.height / 2;
 793       moveX = -dims.width / 2;
 794       moveY = -dims.height / 2;
 795       break;
 796   }
 797
 798   return new Effect.Move(element, {
 799     x: initialMoveX,
 800     y: initialMoveY,
 801     duration: 0.01,
 802     beforeSetup: function(effect) {
 803       effect.element.hide().makeClipping().makePositioned();
 804     },
 805     afterFinishInternal: function(effect) {
 806       new Effect.Parallel(
 807         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
 808           new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
 809           new Effect.Scale(effect.element, 100, {
 810             scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
 811             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
 812         ], Object.extend({
 813              beforeSetup: function(effect) {
 814                effect.effects[0].element.setStyle({height: '0px'}).show();
 815              },
 816              afterFinishInternal: function(effect) {
 817                effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
 818              }
 819            }, options)
 820       );
 821     }
 822   });
 823 };
 824
 825 Effect.Shrink = function(element) {
 826   element = $(element);
 827   var options = Object.extend({
 828     direction: 'center',
 829     moveTransition: Effect.Transitions.sinoidal,
 830     scaleTransition: Effect.Transitions.sinoidal,
 831     opacityTransition: Effect.Transitions.none
 832   }, arguments[1] || { });
 833   var oldStyle = {
 834     top: element.style.top,
 835     left: element.style.left,
 836     height: element.style.height,
 837     width: element.style.width,
 838     opacity: element.getInlineOpacity() };
 839
 840   var dims = element.getDimensions();
 841   var moveX, moveY;
 842
 843   switch (options.direction) {
 844     case 'top-left':
 845       moveX = moveY = 0;
 846       break;
 847     case 'top-right':
 848       moveX = dims.width;
 849       moveY = 0;
 850       break;
 851     case 'bottom-left':
 852       moveX = 0;
 853       moveY = dims.height;
 854       break;
 855     case 'bottom-right':
 856       moveX = dims.width;
 857       moveY = dims.height;
 858       break;
 859     case 'center':
 860       moveX = dims.width / 2;
 861       moveY = dims.height / 2;
 862       break;
 863   }
 864
 865   return new Effect.Parallel(
 866     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
 867       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
 868       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
 869     ], Object.extend({
 870          beforeStartInternal: function(effect) {
 871            effect.effects[0].element.makePositioned().makeClipping();
 872          },
 873          afterFinishInternal: function(effect) {
 874            effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
 875        }, options)
 876   );
 877 };
 878
 879 Effect.Pulsate = function(element) {
 880   element = $(element);
 881   var options    = arguments[1] || { },
 882     oldOpacity = element.getInlineOpacity(),
 883     transition = options.transition || Effect.Transitions.linear,
 884     reverser   = function(pos){
 885       return 1 - transition((-Math.cos((pos*(options.pulses||5)*2)*Math.PI)/2) + .5);
 886     };
 887
 888   return new Effect.Opacity(element,
 889     Object.extend(Object.extend({  duration: 2.0, from: 0,
 890       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
 891     }, options), {transition: reverser}));
 892 };
 893
 894 Effect.Fold = function(element) {
 895   element = $(element);
 896   var oldStyle = {
 897     top: element.style.top,
 898     left: element.style.left,
 899     width: element.style.width,
 900     height: element.style.height };
 901   element.makeClipping();
 902   return new Effect.Scale(element, 5, Object.extend({
 903     scaleContent: false,
 904     scaleX: false,
 905     afterFinishInternal: function(effect) {
 906     new Effect.Scale(element, 1, {
 907       scaleContent: false,
 908       scaleY: false,
 909       afterFinishInternal: function(effect) {
 910         effect.element.hide().undoClipping().setStyle(oldStyle);
 911       } });
 912   }}, arguments[1] || { }));
 913 };
 914
 915 Effect.Morph = Class.create(Effect.Base, {
 916   initialize: function(element) {
 917     this.element = $(element);
 918     if (!this.element) throw(Effect._elementDoesNotExistError);
 919     var options = Object.extend({
 920       style: { }
 921     }, arguments[1] || { });
 922
 923     if (!Object.isString(options.style)) this.style = $H(options.style);
 924     else {
 925       if (options.style.include(':'))
 926         this.style = options.style.parseStyle();
 927       else {
 928         this.element.addClassName(options.style);
 929         this.style = $H(this.element.getStyles());
 930         this.element.removeClassName(options.style);
 931         var css = this.element.getStyles();
 932         this.style = this.style.reject(function(style) {
 933           return style.value == css[style.key];
 934         });
 935         options.afterFinishInternal = function(effect) {
 936           effect.element.addClassName(effect.options.style);
 937           effect.transforms.each(function(transform) {
 938             effect.element.style[transform.style] = '';
 939           });
 940         };
 941       }
 942     }
 943     this.start(options);
 944   },
 945
 946   setup: function(){
 947     function parseColor(color){
 948       if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
 949       color = color.parseColor();
 950       return $R(0,2).map(function(i){
 951         return parseInt( color.slice(i*2+1,i*2+3), 16 );
 952       });
 953     }
 954     this.transforms = this.style.map(function(pair){
 955       var property = pair[0], value = pair[1], unit = null;
 956
 957       if (value.parseColor('#zzzzzz') != '#zzzzzz') {
 958         value = value.parseColor();
 959         unit  = 'color';
 960       } else if (property == 'opacity') {
 961         value = parseFloat(value);
 962         if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
 963           this.element.setStyle({zoom: 1});
 964       } else if (Element.CSS_LENGTH.test(value)) {
 965           var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
 966           value = parseFloat(components[1]);
 967           unit = (components.length == 3) ? components[2] : null;
 968       }
 969
 970       var originalValue = this.element.getStyle(property);
 971       return {
 972         style: property.camelize(),
 973         originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
 974         targetValue: unit=='color' ? parseColor(value) : value,
 975         unit: unit
 976       };
 977     }.bind(this)).reject(function(transform){
 978       return (
 979         (transform.originalValue == transform.targetValue) ||
 980         (
 981           transform.unit != 'color' &&
 982           (isNaN(transform.originalValue) || isNaN(transform.targetValue))
 983         )
 984       );
 985     });
 986   },
 987   update: function(position) {
 988     var style = { }, transform, i = this.transforms.length;
 989     while(i--)
 990       style[(transform = this.transforms[i]).style] =
 991         transform.unit=='color' ? '#'+
 992           (Math.round(transform.originalValue[0]+
 993             (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
 994           (Math.round(transform.originalValue[1]+
 995             (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
 996           (Math.round(transform.originalValue[2]+
 997             (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
 998         (transform.originalValue +
 999           (transform.targetValue - transform.originalValue) * position).toFixed(3) +
1000             (transform.unit === null ? '' : transform.unit);
1001     this.element.setStyle(style, true);
1002   }
1003 });
1004
1005 Effect.Transform = Class.create({
1006   initialize: function(tracks){
1007     this.tracks  = [];
1008     this.options = arguments[1] || { };
1009     this.addTracks(tracks);
1010   },
1011   addTracks: function(tracks){
1012     tracks.each(function(track){
1013       track = $H(track);
1014       var data = track.values().first();
1015       this.tracks.push($H({
1016         ids:     track.keys().first(),
1017         effect:  Effect.Morph,
1018         options: { style: data }
1019       }));
1020     }.bind(this));
1021     return this;
1022   },
1023   play: function(){
1024     return new Effect.Parallel(
1025       this.tracks.map(function(track){
1026         var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
1027         var elements = [$(ids) || $$(ids)].flatten();
1028         return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
1029       }).flatten(),
1030       this.options
1031     );
1032   }
1033 });
1034
1035 Element.CSS_PROPERTIES = $w(
1036   'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
1037   'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
1038   'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
1039   'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
1040   'fontSize fontWeight height left letterSpacing lineHeight ' +
1041   'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
1042   'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
1043   'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
1044   'right textIndent top width wordSpacing zIndex');
1045
1046 Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
1047
1048 String.__parseStyleElement = document.createElement('div');
1049 String.prototype.parseStyle = function(){
1050   var style, styleRules = $H();
1051   if (Prototype.Browser.WebKit)
1052     style = new Element('div',{style:this}).style;
1053   else {
1054     String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
1055     style = String.__parseStyleElement.childNodes[0].style;
1056   }
1057
1058   Element.CSS_PROPERTIES.each(function(property){
1059     if (style[property]) styleRules.set(property, style[property]);
1060   });
1061
1062   if (Prototype.Browser.IE && this.include('opacity'))
1063     styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
1064
1065   return styleRules;
1066 };
1067
1068 if (document.defaultView && document.defaultView.getComputedStyle) {
1069   Element.getStyles = function(element) {
1070     var css = document.defaultView.getComputedStyle($(element), null);
1071     return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
1072       styles[property] = css[property];
1073       return styles;
1074     });
1075   };
1076 } else {
1077   Element.getStyles = function(element) {
1078     element = $(element);
1079     var css = element.currentStyle, styles;
1080     styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
1081       results[property] = css[property];
1082       return results;
1083     });
1084     if (!styles.opacity) styles.opacity = element.getOpacity();
1085     return styles;
1086   };
1087 }
1088
1089 Effect.Methods = {
1090   morph: function(element, style) {
1091     element = $(element);
1092     new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
1093     return element;
1094   },
1095   visualEffect: function(element, effect, options) {
1096     element = $(element);
1097     var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
1098     new Effect[klass](element, options);
1099     return element;
1100   },
1101   highlight: function(element, options) {
1102     element = $(element);
1103     new Effect.Highlight(element, options);
1104     return element;
1105   }
1106 };
1107
1108 $w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
1109   'pulsate shake puff squish switchOff dropOut').each(
1110   function(effect) {
1111     Effect.Methods[effect] = function(element, options){
1112       element = $(element);
1113       Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
1114       return element;
1115     };
1116   }
1117 );
1118
1119 $w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
1120   function(f) { Effect.Methods[f] = Element[f]; }
1121 );
1122
1123 Element.addMethods(Effect.Methods);