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/* Simple Accordion Script
* Requires Prototype and Script.aculo.us Libraries
* By: Brian Crescimanno <brian.crescimanno@gmail.com>
* http://briancrescimanno.com
* Adapted to Prado & minor improvements: Gabor Berczi <gabor.berczi@devworx.hu>
* This work is licensed under the Creative Commons Attribution-Share Alike 3.0
* http://creativecommons.org/licenses/by-sa/3.0/us/
*/
if (typeof Effect == 'undefined')
throw("You must have the script.aculo.us Effect library to use this accordion");
Prado.WebUI.TAccordion = Class.create();
Prado.WebUI.TAccordion.prototype =
{
initialize : function(options)
{
this.element = $(options.ID);
this.onInit(options);
Prado.Registry.set(options.ID, this);
},
onInit : function(options)
{
this.accordion = $(options.ID);
this.options = options;
this.contents = this.accordion.select('div.'+this.options.contentClass);
this.isAnimating = false;
this.current = this.options.defaultExpandedCount ? this.contents[this.options.defaultExpandedCount-1] : this.contents[0];
this.toExpand = null;
if (options.maxHeight)
this.maxHeight = options.maxHeight;
else
{
this.maxHeight = 0;
this.checkMaxHeight();
}
this.initialHide();
this.attachInitialMaxHeight();
var clickHandler = this.clickHandler.bindAsEventListener(this);
this.accordion.observe('click', clickHandler);
},
expand: function(el) {
this.toExpand = el.next('div.'+this.options.contentClass);
if(this.current != this.toExpand){
this.toExpand.show();
this.animate();
}
},
checkMaxHeight: function() {
for(var i=0; i<this.contents.length; i++) {
if(this.contents[i].getHeight() > this.maxHeight) {
this.maxHeight = this.contents[i].getHeight();
}
}
},
attachInitialMaxHeight: function() {
this.current.previous('div.'+this.options.toggleClass).addClassName(this.options.toggleActive);
if(this.current.getHeight() != this.maxHeight) this.current.setStyle({height: this.maxHeight+"px"});
},
clickHandler: function(e) {
var el = e.element();
if(el.hasClassName(this.options.toggleClass) && !this.isAnimating) {
this.expand(el);
}
},
initialHide: function(){
for(var i=0; i<this.contents.length; i++){
if(this.contents[i] != this.current) {
this.contents[i].hide();
this.contents[i].setStyle({height: 0});
}
}
},
enableOverflows: function(enable) {
if (enable) val = ''; else val = 'hidden';
this.current.style.overflow = val;
this.toExpand.style.overflow = val;
},
animate: function() {
var effects = new Array();
var options = {
sync: true,
scaleFrom: 0,
scaleContent: false,
transition: Effect.Transitions.sinoidal,
scaleMode: {
originalHeight: this.maxHeight,
originalWidth: this.accordion.getWidth()
},
scaleX: false,
scaleY: true
};
effects.push(new Effect.Scale(this.toExpand, 100, options));
options = {
sync: true,
scaleContent: false,
transition: Effect.Transitions.sinoidal,
scaleX: false,
scaleY: true
};
effects.push(new Effect.Scale(this.current, 0, options));
var myDuration = 0.75;
new Effect.Parallel(effects, {
duration: myDuration,
fps: 35,
queue: {
position: 'end',
scope: 'accordion'
},
beforeStart: function() {
this.isAnimating = true;
this.enableOverflows(false);
this.current.previous('div.'+this.options.toggleClass).removeClassName(this.options.toggleActive);
this.toExpand.previous('div.'+this.options.toggleClass).addClassName(this.options.toggleActive);
}.bind(this),
afterFinish: function() {
this.current.hide();
this.toExpand.setStyle({ height: this.maxHeight+"px" });
this.current = this.toExpand;
this.isAnimating = false;
this.enableOverflows(true);
}.bind(this)
});
}
};
/*
document.observe("dom:loaded", function(){
accordion = new Accordion("test-accordion", 2);
})
*/
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