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effects.js
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// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
// Justin Palmer (http://encytemedia.com/)
// Mark Pilgrim (http://diveintomark.org/)
// Martin Bialasinki
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
// converts rgb() and #xxx to #xxxxxx format,
// returns self (or first argument) if not convertable
String.prototype.parseColor = function() {
var color = '#';
if (this.slice(0,4) == 'rgb(') {
var cols = this.slice(4,this.length-1).split(',');
var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
} else {
if (this.slice(0,1) == '#') {
if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
if (this.length==7) color = this.toLowerCase();
}
}
return (color.length==7 ? color : (arguments[0] || this));
};
/*--------------------------------------------------------------------------*/
Element.collectTextNodes = function(element) {
return $A($(element).childNodes).collect( function(node) {
return (node.nodeType==3 ? node.nodeValue :
(node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
}).flatten().join('');
};
Element.collectTextNodesIgnoreClass = function(element, className) {
return $A($(element).childNodes).collect( function(node) {
return (node.nodeType==3 ? node.nodeValue :
((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
Element.collectTextNodesIgnoreClass(node, className) : ''));
}).flatten().join('');
};
Element.setContentZoom = function(element, percent) {
element = $(element);
element.setStyle({fontSize: (percent/100) + 'em'});
if (Prototype.Browser.WebKit) window.scrollBy(0,0);
return element;
};
Element.getInlineOpacity = function(element){
return $(element).style.opacity || '';
};
Element.forceRerendering = function(element) {
try {
element = $(element);
var n = document.createTextNode(' ');
element.appendChild(n);
element.removeChild(n);
} catch(e) { }
};
/*--------------------------------------------------------------------------*/
var Effect = {
_elementDoesNotExistError: {
name: 'ElementDoesNotExistError',
message: 'The specified DOM element does not exist, but is required for this effect to operate'
},
Transitions: {
linear: Prototype.K,
sinoidal: function(pos) {
return (-Math.cos(pos*Math.PI)/2) + 0.5;
},
reverse: function(pos) {
return 1-pos;
},
flicker: function(pos) {
var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
return pos > 1 ? 1 : pos;
},
wobble: function(pos) {
return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
},
pulse: function(pos, pulses) {
pulses = pulses || 5;
return (
((pos % (1/pulses)) * pulses).round() == 0 ?
((pos * pulses * 2) - (pos * pulses * 2).floor()) :
1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
);
},
spring: function(pos) {
return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
},
none: function(pos) {
return 0;
},
full: function(pos) {
return 1;
}
},
DefaultOptions: {
duration: 1.0, // seconds
fps: 100, // 100= assume 66fps max.
sync: false, // true for combining
from: 0.0,
to: 1.0,
delay: 0.0,
queue: 'parallel'
},
tagifyText: function(element) {
var tagifyStyle = 'position:relative';
if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
element = $(element);
$A(element.childNodes).each( function(child) {
if (child.nodeType==3) {
child.nodeValue.toArray().each( function(character) {
element.insertBefore(
new Element('span', {style: tagifyStyle}).update(
character == ' ' ? String.fromCharCode(160) : character),
child);
});
Element.remove(child);
}
});
},
multiple: function(element, effect) {
var elements;
if (((typeof element == 'object') ||
Object.isFunction(element)) &&
(element.length))
elements = element;
else
elements = $(element).childNodes;
var options = Object.extend({
speed: 0.1,
delay: 0.0
}, arguments[2] || { });
var masterDelay = options.delay;
$A(elements).each( function(element, index) {
new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
});
},
PAIRS: {
'slide': ['SlideDown','SlideUp'],
'blind': ['BlindDown','BlindUp'],
'appear': ['Appear','Fade']
},
toggle: function(element, effect) {
element = $(element);
effect = (effect || 'appear').toLowerCase();
var options = Object.extend({
queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
}, arguments[2] || { });
Effect[element.visible() ?
Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
}
};
Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
/* ------------- core effects ------------- */
Effect.ScopedQueue = Class.create(Enumerable, {
initialize: function() {
this.effects = [];
this.interval = null;
},
_each: function(iterator) {
this.effects._each(iterator);
},
add: function(effect) {
var timestamp = new Date().getTime();
var position = Object.isString(effect.options.queue) ?
effect.options.queue : effect.options.queue.position;
switch(position) {
case 'front':
// move unstarted effects after this effect
this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
e.startOn += effect.finishOn;
e.finishOn += effect.finishOn;
});
break;
case 'with-last':
timestamp = this.effects.pluck('startOn').max() || timestamp;
break;
case 'end':
// start effect after last queued effect has finished
timestamp = this.effects.pluck('finishOn').max() || timestamp;
break;
}
effect.startOn += timestamp;
effect.finishOn += timestamp;
if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
this.effects.push(effect);
if (!this.interval)
this.interval = setInterval(this.loop.bind(this), 15);
},
remove: function(effect) {
this.effects = this.effects.reject(function(e) { return e==effect });
if (this.effects.length == 0) {
clearInterval(this.interval);
this.interval = null;
}
},
loop: function() {
var timePos = new Date().getTime();
for(var i=0, len=this.effects.length;i<len;i++)
this.effects[i] && this.effects[i].loop(timePos);
}
});
Effect.Queues = {
instances: $H(),
get: function(queueName) {
if (!Object.isString(queueName)) return queueName;
return this.instances.get(queueName) ||
this.instances.set(queueName, new Effect.ScopedQueue());
}
};
Effect.Queue = Effect.Queues.get('global');
Effect.Base = Class.create({
position: null,
start: function(options) {
function codeForEvent(options,eventName){
return (
(options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
(options[eventName] ? 'this.options.'+eventName+'(this);' : '')
);
}
if (options && options.transition === false) options.transition = Effect.Transitions.linear;
this.options = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
this.currentFrame = 0;
this.state = 'idle';
this.startOn = this.options.delay*1000;
this.finishOn = this.startOn+(this.options.duration*1000);
this.fromToDelta = this.options.to-this.options.from;
this.totalTime = this.finishOn-this.startOn;
this.totalFrames = this.options.fps*this.options.duration;
eval('this.render = function(pos){ '+
'if (this.state=="idle"){this.state="running";'+
codeForEvent(this.options,'beforeSetup')+
(this.setup ? 'this.setup();':'')+
codeForEvent(this.options,'afterSetup')+
'};if (this.state=="running"){'+
'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
'this.position=pos;'+
codeForEvent(this.options,'beforeUpdate')+
(this.update ? 'this.update(pos);':'')+
codeForEvent(this.options,'afterUpdate')+
'}}');
this.event('beforeStart');
if (!this.options.sync)
Effect.Queues.get(Object.isString(this.options.queue) ?
'global' : this.options.queue.scope).add(this);
},
loop: function(timePos) {
if (timePos >= this.startOn) {
if (timePos >= this.finishOn) {
this.render(1.0);
this.cancel();
this.event('beforeFinish');
if (this.finish) this.finish();
this.event('afterFinish');
return;
}
var pos = (timePos - this.startOn) / this.totalTime,
frame = (pos * this.totalFrames).round();
if (frame > this.currentFrame) {
this.render(pos);
this.currentFrame = frame;
}
}
},
cancel: function() {
if (!this.options.sync)
Effect.Queues.get(Object.isString(this.options.queue) ?
'global' : this.options.queue.scope).remove(this);
this.state = 'finished';
},
event: function(eventName) {
if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
if (this.options[eventName]) this.options[eventName](this);
},
inspect: function() {
var data = $H();
for(property in this)
if (!Object.isFunction(this[property])) data.set(property, this[property]);
return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
}
});
Effect.Parallel = Class.create(Effect.Base, {
initialize: function(effects) {
this.effects = effects || [];
this.start(arguments[1]);
},
update: function(position) {
this.effects.invoke('render', position);
},
finish: function(position) {
this.effects.each( function(effect) {
effect.render(1.0);
effect.cancel();
effect.event('beforeFinish');
if (effect.finish) effect.finish(position);
effect.event('afterFinish');
});
}
});
Effect.Tween = Class.create(Effect.Base, {
initialize: function(object, from, to) {
object = Object.isString(object) ? $(object) : object;
var args = $A(arguments), method = args.last(),
options = args.length == 5 ? args[3] : null;
this.method = Object.isFunction(method) ? method.bind(object) :
Object.isFunction(object[method]) ? object[method].bind(object) :
function(value) { object[method] = value };
this.start(Object.extend({ from: from, to: to }, options || { }));
},
update: function(position) {
this.method(position);
}
});
Effect.Event = Class.create(Effect.Base, {
initialize: function() {
this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
},
update: Prototype.emptyFunction
});
Effect.Opacity = Class.create(Effect.Base, {
initialize: function(element) {
this.element = $(element);
if (!this.element) throw(Effect._elementDoesNotExistError);
// make this work on IE on elements without 'layout'
if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
this.element.setStyle({zoom: 1});
var options = Object.extend({
from: this.element.getOpacity() || 0.0,
to: 1.0
}, arguments[1] || { });
this.start(options);
},
update: function(position) {
this.element.setOpacity(position);
}
});
Effect.Move = Class.create(Effect.Base, {
initialize: function(element) {
this.element = $(element);
if (!this.element) throw(Effect._elementDoesNotExistError);
var options = Object.extend({
x: 0,
y: 0,
mode: 'relative'
}, arguments[1] || { });
this.start(options);
},
setup: function() {
this.element.makePositioned();
this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
this.originalTop = parseFloat(this.element.getStyle('top') || '0');
if (this.options.mode == 'absolute') {
this.options.x = this.options.x - this.originalLeft;
this.options.y = this.options.y - this.originalTop;
}
},
update: function(position) {
this.element.setStyle({
left: (this.options.x * position + this.originalLeft).round() + 'px',
top: (this.options.y * position + this.originalTop).round() + 'px'
});
}
});
// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
return new Effect.Move(element,
Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};
Effect.Scale = Class.create(Effect.Base, {
initialize: function(element, percent) {
this.element = $(element);
if (!this.element) throw(Effect._elementDoesNotExistError);
var options = Object.extend({
scaleX: true,
scaleY: true,
scaleContent: true,
scaleFromCenter: false,
scaleMode: 'box', // 'box' or 'contents' or { } with provided values
scaleFrom: 100.0,
scaleTo: percent
}, arguments[2] || { });
this.start(options);
},
setup: function() {
this.restoreAfterFinish = this.options.restoreAfterFinish || false;
this.elementPositioning = this.element.getStyle('position');
this.originalStyle = { };
['top','left','width','height','fontSize'].each( function(k) {
this.originalStyle[k] = this.element.style[k];
}.bind(this));
this.originalTop = this.element.offsetTop;
this.originalLeft = this.element.offsetLeft;
var fontSize = this.element.getStyle('font-size') || '100%';
['em','px','%','pt'].each( function(fontSizeType) {
if (fontSize.indexOf(fontSizeType)>0) {
this.fontSize = parseFloat(fontSize);
this.fontSizeType = fontSizeType;
}
}.bind(this));
this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
this.dims = null;
if (this.options.scaleMode=='box')
this.dims = [this.element.offsetHeight, this.element.offsetWidth];
if (/^content/.test(this.options.scaleMode))
this.dims = [this.element.scrollHeight, this.element.scrollWidth];
if (!this.dims)
this.dims = [this.options.scaleMode.originalHeight,
this.options.scaleMode.originalWidth];
},
update: function(position) {
var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
if (this.options.scaleContent && this.fontSize)
this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
},
finish: function(position) {
if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
},
setDimensions: function(height, width) {
var d = { };
if (this.options.scaleX) d.width = width.round() + 'px';
if (this.options.scaleY) d.height = height.round() + 'px';
if (this.options.scaleFromCenter) {
var topd = (height - this.dims[0])/2;
var leftd = (width - this.dims[1])/2;
if (this.elementPositioning == 'absolute') {
if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
} else {
if (this.options.scaleY) d.top = -topd + 'px';
if (this.options.scaleX) d.left = -leftd + 'px';
}
}
this.element.setStyle(d);
}
});
Effect.Highlight = Class.create(Effect.Base, {
initialize: function(element) {
this.element = $(element);
if (!this.element) throw(Effect._elementDoesNotExistError);
var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
this.start(options);
},
setup: function() {
// Prevent executing on elements not in the layout flow
if (this.element.getStyle('display')=='none') { this.cancel(); return; }
// Disable background image during the effect
this.oldStyle = { };
if (!this.options.keepBackgroundImage) {
this.oldStyle.backgroundImage = this.element.getStyle('background-image');
this.element.setStyle({backgroundImage: 'none'});
}
if (!this.options.endcolor)
this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
if (!this.options.restorecolor)
this.options.restorecolor = this.element.getStyle('background-color');
// init color calculations
this._base = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
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));
},
update: function(position) {
this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
},
finish: function() {
this.element.setStyle(Object.extend(this.oldStyle, {
backgroundColor: this.options.restorecolor
}));
}
});
Effect.ScrollTo = function(element) {
var options = arguments[1] || { },
scrollOffsets = document.viewport.getScrollOffsets(),
elementOffsets = $(element).cumulativeOffset(),
max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();
if (options.offset) elementOffsets[1] += options.offset;
return new Effect.Tween(null,
scrollOffsets.top,
elementOffsets[1] > max ? max : elementOffsets[1],
options,
function(p){ scrollTo(scrollOffsets.left, p.round()) }
);
};
/* ------------- combination effects ------------- */
Effect.Fade = function(element) {
element = $(element);
var oldOpacity = element.getInlineOpacity();
var options = Object.extend({
from: element.getOpacity() || 1.0,
to: 0.0,
afterFinishInternal: function(effect) {
if (effect.options.to!=0) return;
effect.element.hide().setStyle({opacity: oldOpacity});
}
}, arguments[1] || { });
return new Effect.Opacity(element,options);
};
Effect.Appear = function(element) {
element = $(element);
var options = Object.extend({
from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
to: 1.0,
// force Safari to render floated elements properly
afterFinishInternal: function(effect) {
effect.element.forceRerendering();
},
beforeSetup: function(effect) {
effect.element.setOpacity(effect.options.from).show();
}}, arguments[1] || { });
return new Effect.Opacity(element,options);
};
Effect.Puff = function(element) {
element = $(element);
var oldStyle = {
opacity: element.getInlineOpacity(),
position: element.getStyle('position'),
top: element.style.top,
left: element.style.left,
width: element.style.width,
height: element.style.height
};
return new Effect.Parallel(
[ new Effect.Scale(element, 200,
{ sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
Object.extend({ duration: 1.0,
beforeSetupInternal: function(effect) {
Position.absolutize(effect.effects[0].element)
},
afterFinishInternal: function(effect) {
effect.effects[0].element.hide().setStyle(oldStyle); }
}, arguments[1] || { })
);
};
Effect.BlindUp = function(element) {
element = $(element);
element.makeClipping();
return new Effect.Scale(element, 0,
Object.extend({ scaleContent: false,
scaleX: false,
restoreAfterFinish: true,
afterFinishInternal: function(effect) {
effect.element.hide().undoClipping();
}
}, arguments[1] || { })
);
};
Effect.BlindDown = function(element) {
element = $(element);
var elementDimensions = element.getDimensions();
return new Effect.Scale(element, 100, Object.extend({
scaleContent: false,
scaleX: false,
scaleFrom: 0,
scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
restoreAfterFinish: true,
afterSetup: function(effect) {
effect.element.makeClipping().setStyle({height: '0px'}).show();
},
afterFinishInternal: function(effect) {
effect.element.undoClipping();
}
}, arguments[1] || { }));
};
Effect.SwitchOff = function(element) {
element = $(element);
var oldOpacity = element.getInlineOpacity();
return new Effect.Appear(element, Object.extend({
duration: 0.4,
from: 0,
transition: Effect.Transitions.flicker,
afterFinishInternal: function(effect) {
new Effect.Scale(effect.element, 1, {
duration: 0.3, scaleFromCenter: true,
scaleX: false, scaleContent: false, restoreAfterFinish: true,
beforeSetup: function(effect) {
effect.element.makePositioned().makeClipping();
},
afterFinishInternal: function(effect) {
effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
}
})
}
}, arguments[1] || { }));
};
Effect.DropOut = function(element) {
element = $(element);
var oldStyle = {
top: element.getStyle('top'),
left: element.getStyle('left'),
opacity: element.getInlineOpacity() };
return new Effect.Parallel(
[ new Effect.Move(element, {x: 0, y: 100, sync: true }),
new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
Object.extend(
{ duration: 0.5,
beforeSetup: function(effect) {
effect.effects[0].element.makePositioned();
},
afterFinishInternal: function(effect) {
effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
}
}, arguments[1] || { }));
};
Effect.Shake = function(element) {
element = $(element);
var options = Object.extend({
distance: 20,
duration: 0.5
}, arguments[1] || {});
var distance = parseFloat(options.distance);
var split = parseFloat(options.duration) / 10.0;
var oldStyle = {
top: element.getStyle('top'),
left: element.getStyle('left') };
return new Effect.Move(element,
{ x: distance, y: 0, duration: split, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
{ x: -distance*2, y: 0, duration: split*2, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
{ x: distance*2, y: 0, duration: split*2, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
{ x: -distance*2, y: 0, duration: split*2, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
{ x: distance*2, y: 0, duration: split*2, afterFinishInternal: function(effect) {
new Effect.Move(effect.element,
{ x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
effect.element.undoPositioned().setStyle(oldStyle);
}}) }}) }}) }}) }}) }});
};
Effect.SlideDown = function(element) {
element = $(element).cleanWhitespace();
// SlideDown need to have the content of the element wrapped in a container element with fixed height!
var oldInnerBottom = element.down().getStyle('bottom');
var elementDimensions = element.getDimensions();
return new Effect.Scale(element, 100, Object.extend({
scaleContent: false,
scaleX: false,
scaleFrom: window.opera ? 0 : 1,
scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
restoreAfterFinish: true,
afterSetup: function(effect) {
effect.element.makePositioned();
effect.element.down().makePositioned();
if (window.opera) effect.element.setStyle({top: ''});
effect.element.makeClipping().setStyle({height: '0px'}).show();
},
afterUpdateInternal: function(effect) {
effect.element.down().setStyle({bottom:
(effect.dims[0] - effect.element.clientHeight) + 'px' });
},
afterFinishInternal: function(effect) {
effect.element.undoClipping().undoPositioned();
effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
}, arguments[1] || { })
);
};
Effect.SlideUp = function(element) {
element = $(element).cleanWhitespace();
var oldInnerBottom = element.down().getStyle('bottom');
var elementDimensions = element.getDimensions();
return new Effect.Scale(element, window.opera ? 0 : 1,
Object.extend({ scaleContent: false,
scaleX: false,
scaleMode: 'box',
scaleFrom: 100,
scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
restoreAfterFinish: true,
afterSetup: function(effect) {
effect.element.makePositioned();
effect.element.down().makePositioned();
if (window.opera) effect.element.setStyle({top: ''});
effect.element.makeClipping().show();
},
afterUpdateInternal: function(effect) {
effect.element.down().setStyle({bottom:
(effect.dims[0] - effect.element.clientHeight) + 'px' });
},
afterFinishInternal: function(effect) {
effect.element.hide().undoClipping().undoPositioned();
effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
}
}, arguments[1] || { })
);
};
// Bug in opera makes the TD containing this element expand for a instance after finish
Effect.Squish = function(element) {
return new Effect.Scale(element, window.opera ? 1 : 0, {
restoreAfterFinish: true,
beforeSetup: function(effect) {
effect.element.makeClipping();
},
afterFinishInternal: function(effect) {
effect.element.hide().undoClipping();
}
});
};
Effect.Grow = function(element) {
element = $(element);
var options = Object.extend({
direction: 'center',
moveTransition: Effect.Transitions.sinoidal,
scaleTransition: Effect.Transitions.sinoidal,
opacityTransition: Effect.Transitions.full
}, arguments[1] || { });
var oldStyle = {
top: element.style.top,
left: element.style.left,
height: element.style.height,
width: element.style.width,
opacity: element.getInlineOpacity() };
var dims = element.getDimensions();
var initialMoveX, initialMoveY;
var moveX, moveY;
switch (options.direction) {
case 'top-left':
initialMoveX = initialMoveY = moveX = moveY = 0;
break;
case 'top-right':
initialMoveX = dims.width;
initialMoveY = moveY = 0;
moveX = -dims.width;
break;
case 'bottom-left':
initialMoveX = moveX = 0;
initialMoveY = dims.height;
moveY = -dims.height;
break;
case 'bottom-right':
initialMoveX = dims.width;
initialMoveY = dims.height;
moveX = -dims.width;
moveY = -dims.height;
break;
case 'center':
initialMoveX = dims.width / 2;
initialMoveY = dims.height / 2;
moveX = -dims.width / 2;
moveY = -dims.height / 2;
break;
}
return new Effect.Move(element, {
x: initialMoveX,
y: initialMoveY,
duration: 0.01,
beforeSetup: function(effect) {
effect.element.hide().makeClipping().makePositioned();
},
afterFinishInternal: function(effect) {
new Effect.Parallel(
[ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
new Effect.Scale(effect.element, 100, {
scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
], Object.extend({
beforeSetup: function(effect) {
effect.effects[0].element.setStyle({height: '0px'}).show();
},
afterFinishInternal: function(effect) {
effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
}
}, options)
)
}
});
};
Effect.Shrink = function(element) {
element = $(element);
var options = Object.extend({
direction: 'center',
moveTransition: Effect.Transitions.sinoidal,
scaleTransition: Effect.Transitions.sinoidal,
opacityTransition: Effect.Transitions.none
}, arguments[1] || { });
var oldStyle = {
top: element.style.top,
left: element.style.left,
height: element.style.height,
width: element.style.width,
opacity: element.getInlineOpacity() };
var dims = element.getDimensions();
var moveX, moveY;
switch (options.direction) {
case 'top-left':
moveX = moveY = 0;
break;
case 'top-right':
moveX = dims.width;
moveY = 0;
break;
case 'bottom-left':
moveX = 0;
moveY = dims.height;
break;
case 'bottom-right':
moveX = dims.width;
moveY = dims.height;
break;
case 'center':
moveX = dims.width / 2;
moveY = dims.height / 2;
break;
}
return new Effect.Parallel(
[ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
], Object.extend({
beforeStartInternal: function(effect) {
effect.effects[0].element.makePositioned().makeClipping();
},
afterFinishInternal: function(effect) {
effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
}, options)
);
};
Effect.Pulsate = function(element) {
element = $(element);
var options = arguments[1] || { };
var oldOpacity = element.getInlineOpacity();
var transition = options.transition || Effect.Transitions.sinoidal;
var reverser = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
reverser.bind(transition);
return new Effect.Opacity(element,
Object.extend(Object.extend({ duration: 2.0, from: 0,
afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
}, options), {transition: reverser}));
};
Effect.Fold = function(element) {
element = $(element);
var oldStyle = {
top: element.style.top,
left: element.style.left,
width: element.style.width,
height: element.style.height };
element.makeClipping();
return new Effect.Scale(element, 5, Object.extend({
scaleContent: false,
scaleX: false,
afterFinishInternal: function(effect) {
new Effect.Scale(element, 1, {
scaleContent: false,
scaleY: false,
afterFinishInternal: function(effect) {
effect.element.hide().undoClipping().setStyle(oldStyle);
} });
}}, arguments[1] || { }));
};
Effect.Morph = Class.create(Effect.Base, {
initialize: function(element) {
this.element = $(element);
if (!this.element) throw(Effect._elementDoesNotExistError);
var options = Object.extend({
style: { }
}, arguments[1] || { });
if (!Object.isString(options.style)) this.style = $H(options.style);
else {
if (options.style.include(':'))
this.style = options.style.parseStyle();
else {
this.element.addClassName(options.style);
this.style = $H(this.element.getStyles());
this.element.removeClassName(options.style);
var css = this.element.getStyles();
this.style = this.style.reject(function(style) {
return style.value == css[style.key];
});
options.afterFinishInternal = function(effect) {
effect.element.addClassName(effect.options.style);
effect.transforms.each(function(transform) {
effect.element.style[transform.style] = '';
});
}
}
}
this.start(options);
},
setup: function(){
function parseColor(color){
if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
color = color.parseColor();
return $R(0,2).map(function(i){
return parseInt( color.slice(i*2+1,i*2+3), 16 )
});
}
this.transforms = this.style.map(function(pair){
var property = pair[0], value = pair[1], unit = null;
if (value.parseColor('#zzzzzz') != '#zzzzzz') {
value = value.parseColor();
unit = 'color';
} else if (property == 'opacity') {
value = parseFloat(value);
if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
this.element.setStyle({zoom: 1});
} else if (Element.CSS_LENGTH.test(value)) {
var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
value = parseFloat(components[1]);
unit = (components.length == 3) ? components[2] : null;
}
var originalValue = this.element.getStyle(property);
return {
style: property.camelize(),
originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
targetValue: unit=='color' ? parseColor(value) : value,
unit: unit
};
}.bind(this)).reject(function(transform){
return (
(transform.originalValue == transform.targetValue) ||
(
transform.unit != 'color' &&
(isNaN(transform.originalValue) || isNaN(transform.targetValue))
)
)
});
},
update: function(position) {
var style = { }, transform, i = this.transforms.length;
while(i--)
style[(transform = this.transforms[i]).style] =
transform.unit=='color' ? '#'+
(Math.round(transform.originalValue[0]+
(transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
(Math.round(transform.originalValue[1]+
(transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
(Math.round(transform.originalValue[2]+
(transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
(transform.originalValue +
(transform.targetValue - transform.originalValue) * position).toFixed(3) +
(transform.unit === null ? '' : transform.unit);
this.element.setStyle(style, true);
}
});
Effect.Transform = Class.create({
initialize: function(tracks){
this.tracks = [];
this.options = arguments[1] || { };
this.addTracks(tracks);
},
addTracks: function(tracks){
tracks.each(function(track){
track = $H(track);
var data = track.values().first();
this.tracks.push($H({
ids: track.keys().first(),
effect: Effect.Morph,
options: { style: data }
}));
}.bind(this));
return this;
},
play: function(){
return new Effect.Parallel(
this.tracks.map(function(track){
var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
var elements = [$(ids) || $$(ids)].flatten();
return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
}).flatten(),
this.options
);
}
});
Element.CSS_PROPERTIES = $w(
'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
'fontSize fontWeight height left letterSpacing lineHeight ' +
'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
'right textIndent top width wordSpacing zIndex');
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
var style, styleRules = $H();
if (Prototype.Browser.WebKit)
style = new Element('div',{style:this}).style;
else {
String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
style = String.__parseStyleElement.childNodes[0].style;
}
Element.CSS_PROPERTIES.each(function(property){
if (style[property]) styleRules.set(property, style[property]);
});
if (Prototype.Browser.IE && this.include('opacity'))
styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);
return styleRules;
};
if (document.defaultView && document.defaultView.getComputedStyle) {
Element.getStyles = function(element) {
var css = document.defaultView.getComputedStyle($(element), null);
return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
styles[property] = css[property];
return styles;
});
};
} else {
Element.getStyles = function(element) {
element = $(element);
var css = element.currentStyle, styles;
styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
hash.set(property, css[property]);
return hash;
});
if (!styles.opacity) styles.set('opacity', element.getOpacity());
return styles;
};
};
Effect.Methods = {
morph: function(element, style) {
element = $(element);
new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
return element;
},
visualEffect: function(element, effect, options) {
element = $(element)
var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
new Effect[klass](element, options);
return element;
},
highlight: function(element, options) {
element = $(element);
new Effect.Highlight(element, options);
return element;
}
};
$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
'pulsate shake puff squish switchOff dropOut').each(
function(effect) {
Effect.Methods[effect] = function(element, options){
element = $(element);
Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
return element;
}
}
);
$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
function(f) { Effect.Methods[f] = Element[f]; }
);
Element.addMethods(Effect.Methods);

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