www.pudn.com > tree.rar > itemcollection.js

var ua	= navigator.userAgent; 
_ie_	= /msie [56789]/i.test(ua); 
_moz_	= /mozilla\/[56789]/i.test(ua); 
function _setFloat (o,sFloat){ 
	if (_ie_){ 
		o.style["styleFloat"] = sFloat; 
	} 
	else if (_moz_){ 
		o.style["cssFloat"] = sFloat; 
	} 
} 
function _numberInArray(v,a){ 
	if (typeof a == "object" && typeof a[0] == "number"){ 
		eval("var t = /," + v + ",/g"); 
		var s = "," + a.join(",") + ","; 
		return t.test(s) 
	} 
	return false; 
} 
function _removeNumberFromArray(v,a){ 
	if (typeof a == "object" && typeof a[0] == "number"){ 
		eval("var t = /," + v + ",/g"); 
		var s = "," + a.join(",") + ","; 
		s = s.replace(t,","); 
		s = s.substr(1,s.length - 2); 
		var retval = []; 
		if (0 != s.length){ 
			retval = s.split(","); 
			for(var i = 0;i < retval.length;i ++){ 
				retval[i] = Number(retval[i]); 
			} 
		} 
		return retval; 
	} 
	return a; 
} 
function _replaceNumberFromArray(v1,v2,a){ 
	if (typeof a == "object" && typeof a[0] == "number"){ 
		eval("var t = /," + v1 + ",/g"); 
		var s = "," + a.join(",") + ","; 
		s = s.replace(t,"," + v2 + ","); 
		s = s.substr(1,s.length - 2); 
		var retval = s.split(","); 
		for (var i = 0;i < retval.length;i ++){ 
			retval[i] = Number(retval[i]); 
		} 
		return retval; 
	} 
	return a; 
} 
function _compareNumbers(a, b){ 
	return a - b 
} 
function RayeItemCollection(){ 
	this.length = 0; 
	this._item = []; 
	this.selectedIndex = []; 
} 
RayeItemCollection.prototype.item = function(idx){ 
	if (idx < this.length && idx >= 0){ 
		return this._item[idx]; 
	} 
} 
RayeItemCollection.prototype.add = function(o){ 
	var i = this.length; 
	this._item[i] = o; 
	if ("function" == typeof this._item[i].onindexchange){ 
		this._item[i].onindexchange(i); 
	} 
	this.length ++; 
} 
RayeItemCollection.prototype.sortBy = function(){ 
} 
RayeItemCollection.prototype.swap = function(idx,idx2){ 
	var o = this._item[idx]; 
	this._item[idx] = this._item[idx2]; 
	if ("function" == typeof this._item[idx2].onindexchange){ 
		this._item[idx2].onindexchange(idx); 
	} 
	this._item[idx2] = o; 
	if ("function" == typeof this._item[idx2].onindexchange){ 
		this._item[idx2].onindexchange(idx); 
	} 
	var fIdx = this.isSelected(idx); 
	var fIdx2 = this.isSelected(idx2); 
	if (!(fIdx && fIdx2)){ 
		if(fIdx){ 
			this.selectedIndex = _replaceNumberFromArray(idx,idx2,this.selectedIndex); 
		} 
		else if(fIdx2){ 
			this.selectedIndex = _replaceNumberFromArray(idx2,idx,this.selectedIndex); 
		} 
	} 
} 
RayeItemCollection.prototype.insertBefore = function(idx,refIdx){ 
	if (idx < refIdx){ 
		refIdx --; 
		for (var i = idx; i < refIdx ;i ++){ 
			this.swap(i,i + 1); 
		} 
	} 
	else if (idx > refIdx){ 
		for(var i = idx;i > refIdx;i --){ 
			this.swap(i,i - 1); 
		} 
	} 
} 
RayeItemCollection.prototype._shift = function(idx){ 
	this._item[idx] = this._item[idx + 1]; 
	if ("function" == typeof this._item[idx].onindexchange){ 
		this._item[idx + 1].onindexchange(idx); 
	} 
	if(this.isSelected(idx + 1)){ 
		this.selectedIndex = _replaceNumberFromArray(idx + 1 , idx,this.selectedIndex); 
	} 
} 
RayeItemCollection.prototype.clear = function(){ 
	var l = this._item.length; 
	for (var i = 0;i < l; i ++){ 
		var o = this._item[i]; 
		this.unselect(i); 
		if("function" == typeof o.clear || "object" == typeof o.clear){ 
			if(0 == i){ 
				o.clear(); 
			} 
		} 
		else if("function" == typeof o.destroy || "object" == typeof o.destroy){ 
			o.destroy(); 
		} 
		o = null; 
		this._item[i] = null; 
	} 
	delete this.selectedIndex; 
	delete this._item; 
	this.length = 0; 
	this._item = []; 
	this.selectedIndex = []; 
} 
RayeItemCollection.prototype.remove = function(idx){ 
	if (idx < this.length && idx >= 0){ 
		var o = this._item[idx]; 
		this.selectedIndex = _removeNumberFromArray(idx,this.selectedIndex); 
		for(var i = idx;i < this.length - 1;i ++){ 
			this._shift(i); 
		} 
		this.length --; 
	} 
	if("function" == typeof o.destroy || "object" == typeof o.destroy){ 
		o.destroy(); 
	} 
	return o; 
} 
RayeItemCollection.prototype.isSelected = function(idx){ 
	return _numberInArray(idx,this.selectedIndex); 
} 
RayeItemCollection.prototype.toggle = function(idx){ 
	if (true == this.isSelected(idx)){ 
		this.unselect(idx); 
	} 
	else{ 
		this.select(idx,true); 
	} 
} 
RayeItemCollection.prototype.selectRange = function(idx,idx2){ 
	var f = (idx > idx2) ? idx2 : idx; 
	var t = (idx > idx2) ? idx : idx2; 
	if (f < 0) f = 0; 
	if (t >= this.length) t = this.length - 1; 
	this.select(-1); 
	for (var i = f;i <= t; i++){ 
		this.select(i,true); 
	} 
} 
RayeItemCollection.prototype.select = function(idx,bMultiple){ 
	bMultiple = typeof bMultiple == "undefined" ? false : bMultiple; 
	if (!bMultiple){ 
		var t = this.selectedIndex; 
		for(var i = 0;i < t.length;i ++){ 
			this.unselect(t[i]); 
		} 
	} 
	if (idx >= 0 && idx < this.length){ 
		if (false == this.isSelected(idx)){ 
			this.selectedIndex[this.selectedIndex.length] = idx; 
			if(typeof this._item[idx].onselect == "function"){ 
				this._item[idx].onselect(); 
			} 
		} 
	} 
} 
RayeItemCollection.prototype.unselect = function(idx){ 
	if (true == this.isSelected(idx)){ 
		this.selectedIndex = _removeNumberFromArray(idx,this.selectedIndex); 
		if(typeof this._item[idx].onblur == "function"){ 
			this._item[idx].onblur(); 
		} 
	} 
}