gistfile1.js

YUI.add('example',function(Y){
    
    
    var Example= function(){
        Example.superclass.constructor.apply(this,arguments);
    };
    
    Y.extend(Example, Y.Overlay,{
        
        className : '',
        
        initializer : function(config) {
            this.className = this.getClassName();
            
            this.after('typeChange',this._typeChanged, this);
            
        },
        
        _updateType : function(cur, prev) {
            var bb = this.get('boundingBox'),
            prevClass = this.className + '-' + prev,
            curClass = this.className + '-' + cur;
            if(cur) {
                bb.replaceClass(prevClass,curClass);
            }else if(prev){
                bb.removeClass(prevClass);
            }
        },
        
        _typeChanged : function(e) {
            this._updateType(e.newVal, e.prevVal);
        }
    },{
        NAME : 'example',
        ATTRS : {
            type : {
                validator : Y.Lang.isString
            }
        }
    });
    
    Y.Example = Example;
    
},'0.1',{requires:['overlay']});