XFormsInstance.prototype = new XFormsElement;

function XFormsInstance (strParentId, strId, bPreserveWhitespace, strTag, strEncoding, strVersion, strXml)
{
	if (!strId)
	{
		return;
	}
	
	XFormsElement.call(this, strParentId, strId, strTag);

	strXml = this._restore(strXml);
	
	/**
	 * Attribute
	 */
	this.attribute["preservewhitespace"] = bPreserveWhitespace;
	
	/**
	 * Property
	 */
	this.preserveWhitespace = bPreserveWhitespace;
	this.encoding = strEncoding;
	this.documentElement = XmlLib.loadXMLFromString(strXml);
	this.root = this.documentElement.firstChild;
	this.version = strVersion;
	this.xml = strXml;
	
	this.m_docClone;
	
	/**
	 * Model에 추가한다.
	 */
	XFormsModel.appendInstance(strId, this, strParentId);
};

XFormsInstance.prototype.getXml = function ()
{
	return this.xml = XmlLib.serializeToString(this.documentElement);
};

XFormsInstance.prototype.getAbility = function ()
{
	return EA_HAS_DOM;
};

/**
 * 인스턴스 초기화에 관한일을 정의한다.
 * @return
 */
XFormsInstance.prototype.synchronize = function ()
{
	// documentElement과 xml을 동기화 시킨다. 
	this.xml = XmlLib.serializeToString(this.documentElement);
	this.root = this.documentElement.firstChild;
};

XFormsInstance.prototype.createAttribute = function ()
{
	
};

XFormsInstance.prototype.createElement = function (strName)
{
	return this.documentElement.createElement(strName);
};

XFormsInstance.prototype.createNode = function (strType, strName, strNamespace)
{
	var xnNode = null;
	if ("element" == strType)
	{
		xnNode = this.createElement(strName);
	}
	else if ("attribute" == strType)
	{
		xnNode = this.createAttribute(strName);
	}
	// TODO namespaceURI
	
	return xnNode;
};

XFormsInstance.prototype.getElementsByTagName = function ()
{
	
};

XFormsInstance.prototype.getXPathString = function ()
{
	
};

XFormsInstance.prototype.load = function ()
{
		
};

XFormsInstance.prototype.loadXML = function (strXml)
{
	this.xml = strXml;
	this.documentElement = XmlLib.loadXMLFromString(strXml);
	this.root = this.documentElement.firstChild;
};

XFormsInstance.prototype.selectNodes = function (strXPath)
{
	return XmlLib.selectNodes(this.documentElement, strXPath);
};

XFormsInstance.prototype.selectNodesXml = function (strXPath)
{
	var strNode = "";
	var xnNodeList = XmlLib.selectNodes(this.documentElement, strXPath);
	if (null != xnNodeList)
	{
		for (var i=0; i< xnNodeList.length; i++)
		{
			strNode += XmlLib.serializeToString(xnNodeList.item(i));
		}	
	}
	return strNode;
};

XFormsInstance.prototype.selectSingleNode = function (strXPath)
{
	return XmlLib.selectSingleNode(this.documentElement, strXPath);
};

XFormsInstance.prototype.cloneInstances = function ()
{
	
};

XFormsInstance.prototype._restore = function (strXml)
{ 
	strXml = strXml.split("\_\_TF\_N").join("\\n");
	strXml = strXml.split("\_\_TF\_T").join("\\t");
	strXml = strXml.split("\_\_TF\_R").join("\\r");
	return strXml;
};

// TODO createChild 구현중 2011. 03. 15. 박현우 /////////////////////////////////////////////////////////////////////////////////////
//XFormsInstance.create = function (strParentId, clAttribute, strStyle)
//{
//	// 메인노드 생성
//	var xnInsatance = XFormsInstance.createMainNode(clAttribute);
////	var xnParent = document.getElementById("HE_"+strParentId);
////	xnParent.appendChild(xnInsatance);
////	
////	// 하위노드 생성
////	xnInsatance = XFormsInstance.createSubNodes(xnInsatance, clAttribute);
//
//	// object 생성
//	return XFormsInstance.createObject(strParentId, xnInsatance, clAttribute, strStyle);
//};
//
//XFormsInstance.createMainNode = function (clAttribute)
//{
//	
////	return xnInstance;
//};
//
//XFormsInstance.createObject = function (strParentId, xnInstance, clAttribute, strStyle)
//{
//	var strId = "";
//	var bPreserveWhiteSpace = false;
//	var strEncoding = "";
//	var strVersion = "";
//	var strXml = "";
//	var strUserDefineAttrib = "";
//	
//	for (var i=0; i<clAttribute.count(); i++)
//	{
//		var strAttributeName = clAttribute.keys()[i];
//		switch (strAttributeName)
//		{
//			case "id" :
//			{
//				strId = clAttribute.item(strAttributeName);
//				break;
//			}
//			case "preservewhitespace" :
//			{
//				if ("true" == clAttribute.item(strAttributeName))
//				{
//					bPreserveWhiteSpace = true;
//				}
//				break;
//			}
//			case "encoding" :
//			{
//				strEncoding = clAttribute.item(strAttributeName);
//				break;
//			}
//			case "id" :
//			{
//				break;
//			}
//			case "version" :
//			{
//				strVersion = clAttribute.item(strAttributeName);
//				break;
//			}
//			case "xml" :
//			{
//				strXml = clAttribute.item(strAttributeName);
//				break;
//			}
//		}
//	}
//	var xnInstance = new XFormsInstance(strParentId, strId, bPreserveWhiteSpace, "xforms:instance", strEncoding, strVersion, strXml, strUserDefineAttrib);
//	return xnInstance;
//};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////