public/javascripts/effects.js

   1 // script.aculo.us effects.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007
   2
   3 // Copyright (c) 2005-2007 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) + 0.5;
  76     },
  77     reverse: function(pos) {
  78       return 1-pos;
  79     },
  80     flicker: function(pos) {
  81       var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
  82       return pos > 1 ? 1 : pos;
  83     },
  84     wobble: function(pos) {
  85       return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
  86     },
  87     pulse: function(pos, pulses) {
  88       pulses = pulses || 5;
  89       return (
  90         ((pos % (1/pulses)) * pulses).round() == 0 ?
  91               ((pos * pulses * 2) - (pos * pulses * 2).floor()) :
  92           1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
  93         );
  94     },
  95     spring: function(pos) {
  96       return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
  97     },
  98     none: function(pos) {
  99       return 0;
 100     },
 101     full: function(pos) {
 102       return 1;
 103     }
 104   },
 105   DefaultOptions: {
 106     duration:   1.0,   // seconds
 107     fps:        100,   // 100= assume 66fps max.
 108     sync:       false, // true for combining
 109     from:       0.0,
 110     to:         1.0,
 111     delay:      0.0,
 112     queue:      'parallel'
 113   },
 114   tagifyText: function(element) {
 115     var tagifyStyle = 'position:relative';
 116     if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
 117
 118     element = $(element);
 119     $A(element.childNodes).each( function(child) {
 120       if (child.nodeType==3) {
 121         child.nodeValue.toArray().each( function(character) {
 122           element.insertBefore(
 123             new Element('span', {style: tagifyStyle}).update(
 124               character == ' ' ? String.fromCharCode(160) : character),
 125               child);
 126         });
 127         Element.remove(child);
 128       }
 129     });
 130   },
 131   multiple: function(element, effect) {
 132     var elements;
 133     if (((typeof element == 'object') ||
 134         Object.isFunction(element)) &&
 135        (element.length))
 136       elements = element;
 137     else
 138       elements = $(element).childNodes;
 139
 140     var options = Object.extend({
 141       speed: 0.1,
 142       delay: 0.0
 143     }, arguments[2] || { });
 144     var masterDelay = options.delay;
 145
 146     $A(elements).each( function(element, index) {
 147       new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
 148     });
 149   },
 150   PAIRS: {
 151     'slide':  ['SlideDown','SlideUp'],
 152     'blind':  ['BlindDown','BlindUp'],
 153     'appear': ['Appear','Fade']
 154   },
 155   toggle: function(element, effect) {
 156     element = $(element);
 157     effect = (effect || 'appear').toLowerCase();
 158     var options = Object.extend({
 159       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
 160     }, arguments[2] || { });
 161     Effect[element.visible() ?
 162       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
 163   }
 164 };
 165
 166 Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
 167
 168 /* ------------- core effects ------------- */
 169
 170 Effect.ScopedQueue = Class.create(Enumerable, {
 171   initialize: function() {
 172     this.effects  = [];
 173     this.interval = null;
 174   },
 175   _each: function(iterator) {
 176     this.effects._each(iterator);
 177   },
 178   add: function(effect) {
 179     var timestamp = new Date().getTime();
 180
 181     var position = Object.isString(effect.options.queue) ?
 182       effect.options.queue : effect.options.queue.position;
 183
 184     switch(position) {
 185       case 'front':
 186         // move unstarted effects after this effect
 187         this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
 188             e.startOn  += effect.finishOn;
 189             e.finishOn += effect.finishOn;
 190           });
 191         break;
 192       case 'with-last':
 193         timestamp = this.effects.pluck('startOn').max() || timestamp;
 194         break;
 195       case 'end':
 196         // start effect after last queued effect has finished
 197         timestamp = this.effects.pluck('finishOn').max() || timestamp;
 198         break;
 199     }
 200
 201     effect.startOn  += timestamp;
 202     effect.finishOn += timestamp;
 203
 204     if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
 205       this.effects.push(effect);
 206
 207     if (!this.interval)
 208       this.interval = setInterval(this.loop.bind(this), 15);
 209   },
 210   remove: function(effect) {
 211     this.effects = this.effects.reject(function(e) { return e==effect });
 212     if (this.effects.length == 0) {
 213       clearInterval(this.interval);
 214       this.interval = null;
 215     }
 216   },
 217   loop: function() {
 218     var timePos = new Date().getTime();
 219     for(var i=0, len=this.effects.length;i<len;i++)
 220       this.effects[i] && this.effects[i].loop(timePos);
 221   }
 222 });
 223
 224 Effect.Queues = {
 225   instances: $H(),
 226   get: function(queueName) {
 227     if (!Object.isString(queueName)) return queueName;
 228
 229     return this.instances.get(queueName) ||
 230       this.instances.set(queueName, new Effect.ScopedQueue());
 231   }
 232 };
 233 Effect.Queue = Effect.Queues.get('global');
 234
 235 Effect.Base = Class.create({
 236   position: null,
 237   start: function(options) {
 238     function codeForEvent(options,eventName){
 239       return (
 240         (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
 241         (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
 242       );
 243     }
 244     if (options && options.transition === false) options.transition = Effect.Transitions.linear;
 245     this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
 246     this.currentFrame = 0;
 247     this.state        = 'idle';
 248     this.startOn      = this.options.delay*1000;
 249     this.finishOn     = this.startOn+(this.options.duration*1000);
 250     this.fromToDelta  = this.options.to-this.options.from;
 251     this.totalTime    = this.finishOn-this.startOn;
 252     this.totalFrames  = this.options.fps*this.options.duration;
 253
 254     eval('this.render = function(pos){ '+
 255       'if (this.state=="idle"){this.state="running";'+
 256       codeForEvent(this.options,'beforeSetup')+
 257       (this.setup ? 'this.setup();':'')+
 258       codeForEvent(this.options,'afterSetup')+
 259       '};if (this.state=="running"){'+
 260       'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
 261       'this.position=pos;'+
 262       codeForEvent(this.options,'beforeUpdate')+
 263       (this.update ? 'this.update(pos);':'')+
 264       codeForEvent(this.options,'afterUpdate')+
 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     max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();
 515
 516   if (options.offset) elementOffsets[1] += options.offset;
 517
 518   return new Effect.Tween(null,
 519     scrollOffsets.top,
 520     elementOffsets[1] > max ? max : elementOffsets[1],
 521     options,
 522     function(p){ scrollTo(scrollOffsets.left, p.round()) }
 523   );
 524 };
 525
 526 /* ------------- combination effects ------------- */
 527
 528 Effect.Fade = function(element) {
 529   element = $(element);
 530   var oldOpacity = element.getInlineOpacity();
 531   var options = Object.extend({
 532     from: element.getOpacity() || 1.0,
 533     to:   0.0,
 534     afterFinishInternal: function(effect) {
 535       if (effect.options.to!=0) return;
 536       effect.element.hide().setStyle({opacity: oldOpacity});
 537     }
 538   }, arguments[1] || { });
 539   return new Effect.Opacity(element,options);
 540 };
 541
 542 Effect.Appear = function(element) {
 543   element = $(element);
 544   var options = Object.extend({
 545   from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
 546   to:   1.0,
 547   // force Safari to render floated elements properly
 548   afterFinishInternal: function(effect) {
 549     effect.element.forceRerendering();
 550   },
 551   beforeSetup: function(effect) {
 552     effect.element.setOpacity(effect.options.from).show();
 553   }}, arguments[1] || { });
 554   return new Effect.Opacity(element,options);
 555 };
 556
 557 Effect.Puff = function(element) {
 558   element = $(element);
 559   var oldStyle = {
 560     opacity: element.getInlineOpacity(),
 561     position: element.getStyle('position'),
 562     top:  element.style.top,
 563     left: element.style.left,
 564     width: element.style.width,
 565     height: element.style.height
 566   };
 567   return new Effect.Parallel(
 568    [ new Effect.Scale(element, 200,
 569       { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
 570      new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
 571      Object.extend({ duration: 1.0,
 572       beforeSetupInternal: function(effect) {
 573         Position.absolutize(effect.effects[0].element)
 574       },
 575       afterFinishInternal: function(effect) {
 576          effect.effects[0].element.hide().setStyle(oldStyle); }
 577      }, arguments[1] || { })
 578    );
 579 };
 580
 581 Effect.BlindUp = function(element) {
 582   element = $(element);
 583   element.makeClipping();
 584   return new Effect.Scale(element, 0,
 585     Object.extend({ scaleContent: false,
 586       scaleX: false,
 587       restoreAfterFinish: true,
 588       afterFinishInternal: function(effect) {
 589         effect.element.hide().undoClipping();
 590       }
 591     }, arguments[1] || { })
 592   );
 593 };
 594
 595 Effect.BlindDown = function(element) {
 596   element = $(element);
 597   var elementDimensions = element.getDimensions();
 598   return new Effect.Scale(element, 100, Object.extend({
 599     scaleContent: false,
 600     scaleX: false,
 601     scaleFrom: 0,
 602     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 603     restoreAfterFinish: true,
 604     afterSetup: function(effect) {
 605       effect.element.makeClipping().setStyle({height: '0px'}).show();
 606     },
 607     afterFinishInternal: function(effect) {
 608       effect.element.undoClipping();
 609     }
 610   }, arguments[1] || { }));
 611 };
 612
 613 Effect.SwitchOff = function(element) {
 614   element = $(element);
 615   var oldOpacity = element.getInlineOpacity();
 616   return new Effect.Appear(element, Object.extend({
 617     duration: 0.4,
 618     from: 0,
 619     transition: Effect.Transitions.flicker,
 620     afterFinishInternal: function(effect) {
 621       new Effect.Scale(effect.element, 1, {
 622         duration: 0.3, scaleFromCenter: true,
 623         scaleX: false, scaleContent: false, restoreAfterFinish: true,
 624         beforeSetup: function(effect) {
 625           effect.element.makePositioned().makeClipping();
 626         },
 627         afterFinishInternal: function(effect) {
 628           effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
 629         }
 630       })
 631     }
 632   }, arguments[1] || { }));
 633 };
 634
 635 Effect.DropOut = function(element) {
 636   element = $(element);
 637   var oldStyle = {
 638     top: element.getStyle('top'),
 639     left: element.getStyle('left'),
 640     opacity: element.getInlineOpacity() };
 641   return new Effect.Parallel(
 642     [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
 643       new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
 644     Object.extend(
 645       { duration: 0.5,
 646         beforeSetup: function(effect) {
 647           effect.effects[0].element.makePositioned();
 648         },
 649         afterFinishInternal: function(effect) {
 650           effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
 651         }
 652       }, arguments[1] || { }));
 653 };
 654
 655 Effect.Shake = function(element) {
 656   element = $(element);
 657   var options = Object.extend({
 658     distance: 20,
 659     duration: 0.5
 660   }, arguments[1] || {});
 661   var distance = parseFloat(options.distance);
 662   var split = parseFloat(options.duration) / 10.0;
 663   var oldStyle = {
 664     top: element.getStyle('top'),
 665     left: element.getStyle('left') };
 666     return new Effect.Move(element,
 667       { x:  distance, y: 0, duration: split, 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*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
 676     new Effect.Move(effect.element,
 677       { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
 678         effect.element.undoPositioned().setStyle(oldStyle);
 679   }}) }}) }}) }}) }}) }});
 680 };
 681
 682 Effect.SlideDown = function(element) {
 683   element = $(element).cleanWhitespace();
 684   // SlideDown need to have the content of the element wrapped in a container element with fixed height!
 685   var oldInnerBottom = element.down().getStyle('bottom');
 686   var elementDimensions = element.getDimensions();
 687   return new Effect.Scale(element, 100, Object.extend({
 688     scaleContent: false,
 689     scaleX: false,
 690     scaleFrom: window.opera ? 0 : 1,
 691     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 692     restoreAfterFinish: true,
 693     afterSetup: function(effect) {
 694       effect.element.makePositioned();
 695       effect.element.down().makePositioned();
 696       if (window.opera) effect.element.setStyle({top: ''});
 697       effect.element.makeClipping().setStyle({height: '0px'}).show();
 698     },
 699     afterUpdateInternal: function(effect) {
 700       effect.element.down().setStyle({bottom:
 701         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 702     },
 703     afterFinishInternal: function(effect) {
 704       effect.element.undoClipping().undoPositioned();
 705       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
 706     }, arguments[1] || { })
 707   );
 708 };
 709
 710 Effect.SlideUp = function(element) {
 711   element = $(element).cleanWhitespace();
 712   var oldInnerBottom = element.down().getStyle('bottom');
 713   var elementDimensions = element.getDimensions();
 714   return new Effect.Scale(element, window.opera ? 0 : 1,
 715    Object.extend({ scaleContent: false,
 716     scaleX: false,
 717     scaleMode: 'box',
 718     scaleFrom: 100,
 719     scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
 720     restoreAfterFinish: true,
 721     afterSetup: function(effect) {
 722       effect.element.makePositioned();
 723       effect.element.down().makePositioned();
 724       if (window.opera) effect.element.setStyle({top: ''});
 725       effect.element.makeClipping().show();
 726     },
 727     afterUpdateInternal: function(effect) {
 728       effect.element.down().setStyle({bottom:
 729         (effect.dims[0] - effect.element.clientHeight) + 'px' });
 730     },
 731     afterFinishInternal: function(effect) {
 732       effect.element.hide().undoClipping().undoPositioned();
 733       effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
 734     }
 735    }, arguments[1] || { })
 736   );
 737 };
 738
 739 // Bug in opera makes the TD containing this element expand for a instance after finish
 740 Effect.Squish = function(element) {
 741   return new Effect.Scale(element, window.opera ? 1 : 0, {
 742     restoreAfterFinish: true,
 743     beforeSetup: function(effect) {
 744       effect.element.makeClipping();
 745     },
 746     afterFinishInternal: function(effect) {
 747       effect.element.hide().undoClipping();
 748     }
 749   });
 750 };
 751
 752 Effect.Grow = function(element) {
 753   element = $(element);
 754   var options = Object.extend({
 755     direction: 'center',
 756     moveTransition: Effect.Transitions.sinoidal,
 757     scaleTransition: Effect.Transitions.sinoidal,
 758     opacityTransition: Effect.Transitions.full
 759   }, arguments[1] || { });
 760   var oldStyle = {
 761     top: element.style.top,
 762     left: element.style.left,
 763     height: element.style.height,
 764     width: element.style.width,
 765     opacity: element.getInlineOpacity() };
 766
 767   var dims = element.getDimensions();
 768   var initialMoveX, initialMoveY;
 769   var moveX, moveY;
 770
 771   switch (options.direction) {
 772     case 'top-left':
 773       initialMoveX = initialMoveY = moveX = moveY = 0;
 774       break;
 775     case 'top-right':
 776       initialMoveX = dims.width;
 777       initialMoveY = moveY = 0;
 778       moveX = -dims.width;
 779       break;
 780     case 'bottom-left':
 781       initialMoveX = moveX = 0;
 782       initialMoveY = dims.height;
 783       moveY = -dims.height;
 784       break;
 785     case 'bottom-right':
 786       initialMoveX = dims.width;
 787       initialMoveY = dims.height;
 788       moveX = -dims.width;
 789       moveY = -dims.height;
 790       break;
 791     case 'center':
 792       initialMoveX = dims.width / 2;
 793       initialMoveY = dims.height / 2;
 794       moveX = -dims.width / 2;
 795       moveY = -dims.height / 2;
 796       break;
 797   }
 798
 799   return new Effect.Move(element, {
 800     x: initialMoveX,
 801     y: initialMoveY,
 802     duration: 0.01,
 803     beforeSetup: function(effect) {
 804       effect.element.hide().makeClipping().makePositioned();
 805     },
 806     afterFinishInternal: function(effect) {
 807       new Effect.Parallel(
 808         [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
 809           new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
 810           new Effect.Scale(effect.element, 100, {
 811             scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
 812             sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
 813         ], Object.extend({
 814              beforeSetup: function(effect) {
 815                effect.effects[0].element.setStyle({height: '0px'}).show();
 816              },
 817              afterFinishInternal: function(effect) {
 818                effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
 819              }
 820            }, options)
 821       )
 822     }
 823   });
 824 };
 825
 826 Effect.Shrink = function(element) {
 827   element = $(element);
 828   var options = Object.extend({
 829     direction: 'center',
 830     moveTransition: Effect.Transitions.sinoidal,
 831     scaleTransition: Effect.Transitions.sinoidal,
 832     opacityTransition: Effect.Transitions.none
 833   }, arguments[1] || { });
 834   var oldStyle = {
 835     top: element.style.top,
 836     left: element.style.left,
 837     height: element.style.height,
 838     width: element.style.width,
 839     opacity: element.getInlineOpacity() };
 840
 841   var dims = element.getDimensions();
 842   var moveX, moveY;
 843
 844   switch (options.direction) {
 845     case 'top-left':
 846       moveX = moveY = 0;
 847       break;
 848     case 'top-right':
 849       moveX = dims.width;
 850       moveY = 0;
 851       break;
 852     case 'bottom-left':
 853       moveX = 0;
 854       moveY = dims.height;
 855       break;
 856     case 'bottom-right':
 857       moveX = dims.width;
 858       moveY = dims.height;
 859       break;
 860     case 'center':
 861       moveX = dims.width / 2;
 862       moveY = dims.height / 2;
 863       break;
 864   }
 865
 866   return new Effect.Parallel(
 867     [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
 868       new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
 869       new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
 870     ], Object.extend({
 871          beforeStartInternal: function(effect) {
 872            effect.effects[0].element.makePositioned().makeClipping();
 873          },
 874          afterFinishInternal: function(effect) {
 875            effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
 876        }, options)
 877   );
 878 };
 879
 880 Effect.Pulsate = function(element) {
 881   element = $(element);
 882   var options    = arguments[1] || { };
 883   var oldOpacity = element.getInlineOpacity();
 884   var transition = options.transition || Effect.Transitions.sinoidal;
 885   var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
 886   reverser.bind(transition);
 887   return new Effect.Opacity(element,
 888     Object.extend(Object.extend({  duration: 2.0, from: 0,
 889       afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
 890     }, options), {transition: reverser}));
 891 };
 892
 893 Effect.Fold = function(element) {
 894   element = $(element);
 895   var oldStyle = {
 896     top: element.style.top,
 897     left: element.style.left,
 898     width: element.style.width,
 899     height: element.style.height };
 900   element.makeClipping();
 901   return new Effect.Scale(element, 5, Object.extend({
 902     scaleContent: false,
 903     scaleX: false,
 904     afterFinishInternal: function(effect) {
 905     new Effect.Scale(element, 1, {
 906       scaleContent: false,
 907       scaleY: false,
 908       afterFinishInternal: function(effect) {
 909         effect.element.hide().undoClipping().setStyle(oldStyle);
 910       } });
 911   }}, arguments[1] || { }));
 912 };
 913
 914 Effect.Morph = Class.create(Effect.Base, {
 915   initialize: function(element) {
 916     this.element = $(element);
 917     if (!this.element) throw(Effect._elementDoesNotExistError);
 918     var options = Object.extend({
 919       style: { }
 920     }, arguments[1] || { });
 921
 922     if (!Object.isString(options.style)) this.style = $H(options.style);
 923     else {
 924       if (options.style.include(':'))
 925         this.style = options.style.parseStyle();
 926       else {
 927         this.element.addClassName(options.style);
 928         this.style = $H(this.element.getStyles());
 929         this.element.removeClassName(options.style);
 930         var css = this.element.getStyles();
 931         this.style = this.style.reject(function(style) {
 932           return style.value == css[style.key];
 933         });
 934         options.afterFinishInternal = function(effect) {
 935           effect.element.addClassName(effect.options.style);
 936           effect.transforms.each(function(transform) {
 937             effect.element.style[transform.style] = '';
 938           });
 939         }
 940       }
 941     }
 942     this.start(options);
 943   },
 944
 945   setup: function(){
 946     function parseColor(color){
 947       if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
 948       color = color.parseColor();
 949       return $R(0,2).map(function(i){
 950         return parseInt( color.slice(i*2+1,i*2+3), 16 )
 951       });
 952     }
 953     this.transforms = this.style.map(function(pair){
 954       var property = pair[0], value = pair[1], unit = null;
 955
 956       if (value.parseColor('#zzzzzz') != '#zzzzzz') {
 957         value = value.parseColor();
 958         unit  = 'color';
 959       } else if (property == 'opacity') {
 960         value = parseFloat(value);
 961         if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
 962           this.element.setStyle({zoom: 1});
 963       } else if (Element.CSS_LENGTH.test(value)) {
 964           var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
 965           value = parseFloat(components[1]);
 966           unit = (components.length == 3) ? components[2] : null;
 967       }
 968
 969       var originalValue = this.element.getStyle(property);
 970       return {
 971         style: property.camelize(),
 972         originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
 973         targetValue: unit=='color' ? parseColor(value) : value,
 974         unit: unit
 975       };
 976     }.bind(this)).reject(function(transform){
 977       return (
 978         (transform.originalValue == transform.targetValue) ||
 979         (
 980           transform.unit != 'color' &&
 981           (isNaN(transform.originalValue) || isNaN(transform.targetValue))
 982         )
 983       )
 984     });
 985   },
 986   update: function(position) {
 987     var style = { }, transform, i = this.transforms.length;
 988     while(i--)
 989       style[(transform = this.transforms[i]).style] =
 990         transform.unit=='color' ? '#'+
 991           (Math.round(transform.originalValue[0]+
 992             (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
 993           (Math.round(transform.originalValue[1]+
 994             (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
 995           (Math.round(transform.originalValue[2]+
 996             (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
 997         (transform.originalValue +
 998           (transform.targetValue - transform.originalValue) * position).toFixed(3) +
 999             (transform.unit === null ? '' : transform.unit);
1000     this.element.setStyle(style, true);
1001   }
1002 });
1003
1004 Effect.Transform = Class.create({
1005   initialize: function(tracks){
1006     this.tracks  = [];
1007     this.options = arguments[1] || { };
1008     this.addTracks(tracks);
1009   },
1010   addTracks: function(tracks){
1011     tracks.each(function(track){
1012       track = $H(track);
1013       var data = track.values().first();
1014       this.tracks.push($H({
1015         ids:     track.keys().first(),
1016         effect:  Effect.Morph,
1017         options: { style: data }
1018       }));
1019     }.bind(this));
1020     return this;
1021   },
1022   play: function(){
1023     return new Effect.Parallel(
1024       this.tracks.map(function(track){
1025         var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
1026         var elements = [$(ids) || $$(ids)].flatten();
1027         return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
1028       }).flatten(),
1029       this.options
1030     );
1031   }
1032 });
1033
1034 Element.CSS_PROPERTIES = $w(
1035   'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
1036   'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
1037   'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
1038   'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
1039   'fontSize fontWeight height left letterSpacing lineHeight ' +
1040   'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
1041   'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
1042   'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
1043   'right textIndent top width wordSpacing zIndex');
1044
1045 Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
1046
1047 String.__parseStyleElement = document.createElement('div');
1048 String.prototype.parseStyle = function(){
1049   var style, styleRules = $H();
1050   if (Prototype.Browser.WebKit)
1051     style = new Element('div',{style:this}).style;
1052   else {
1053     String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
1054     style = String.__parseStyleElement.childNodes[0].style;
1055   }
1056
1057   Element.CSS_PROPERTIES.each(function(property){
1058     if (style[property]) styleRules.set(property, style[property]);
1059   });
1060
1061   if (Prototype.Browser.IE && this.include('opacity'))
1062     styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
1063
1064   return styleRules;
1065 };
1066
1067 if (document.defaultView && document.defaultView.getComputedStyle) {
1068   Element.getStyles = function(element) {
1069     var css = document.defaultView.getComputedStyle($(element), null);
1070     return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
1071       styles[property] = css[property];
1072       return styles;
1073     });
1074   };
1075 } else {
1076   Element.getStyles = function(element) {
1077     element = $(element);
1078     var css = element.currentStyle, styles;
1079     styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
1080       hash.set(property, css[property]);
1081       return hash;
1082     });
1083     if (!styles.opacity) styles.set('opacity', element.getOpacity());
1084     return styles;
1085   };
1086 };
1087
1088 Effect.Methods = {
1089   morph: function(element, style) {
1090     element = $(element);
1091     new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
1092     return element;
1093   },
1094   visualEffect: function(element, effect, options) {
1095     element = $(element)
1096     var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
1097     new Effect[klass](element, options);
1098     return element;
1099   },
1100   highlight: function(element, options) {
1101     element = $(element);
1102     new Effect.Highlight(element, options);
1103     return element;
1104   }
1105 };
1106
1107 $w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
1108   'pulsate shake puff squish switchOff dropOut').each(
1109   function(effect) {
1110     Effect.Methods[effect] = function(element, options){
1111       element = $(element);
1112       Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
1113       return element;
1114     }
1115   }
1116 );
1117
1118 $w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
1119   function(f) { Effect.Methods[f] = Element[f]; }
1120 );
1121
1122 Element.addMethods(Effect.Methods);