var viewLevelCurrent = 0;
var viewLevelUntil = 0;
var curViewPos = "";
var colValsArray;
var arrCheckAction = new Array();
var numRows;
var dataSetCount = 15;
var ajaxReq;
var currentResortColumn = new Array(-1,"", "");
var currentSearchPosition = 1;
var contentID = "";
var innerDB = "";
var innerView = "";
var restrictToCategory = "";
var errorResponse = "";

function getCategoryItems(selectionType, start, expand, resortAscending, resortDescending, dataSetCounter) {
	//	The following line is for IE-Caching-Bug only
	try { document.execCommand("BackgroundImageCache", false, true); } catch(err) {};
	//	End of special instruction for IE-Caching-Bug
	var urlStr = "?ReadViewEntries";
	selectionType = (selectionType=="")?"start":selectionType;
	start = (start=="")?(initialStart!=""?initialStart:""):start;
	start = (start=="")?((initialExpand!="" && initialExpand!="ExpandAll")?initialExpand.split(".")[0]:"1"):start;
	expand = (expand=="")?(initialExpand!=""?initialExpand:""):expand;
	resortAscending = (resortAscending=="")?(initialResortAscending!=""?initialResortAscending:""):resortAscending;
	resortDescending = (resortDescending=="")?(initialResortDescending!=""?initialResortDescending:""):resortDescending;
	dataSetCount = (dataSetCounter=="")?dataSetCount:parseInt(dataSetCounter);
	innerDB = (innerDB=="")?webDbName:innerDB;
	innerView = (innerView=="")?viewName:innerView;

	initialExpand = "";
	initialStart = "";
	initialResortAscending = resortAscending;
	initialResortDescending = resortDescending;
	//	arrCheckAction = new Array();
	
	switch (selectionType) {
		case "start":
			viewLevelCurrent = 0;
			viewLevelUntil = expand.split(".").length;
			curViewPos = "";
			urlStr += "&Start="+start;
			break;
		case "startKey":
			viewLevelCurrent = 0;
			viewLevelUntil = expand.split(".").length;
			curViewPos = "";
			urlStr += "&StartKey="+start;
			break;
		case "restrictToCategory":
			viewLevelCurrent = 0;
			viewLevelUntil = 10;
			curViewPos = "";
			urlStr += "&RestrictToCategory="+start;
			break;
	}
	
	urlStr += (resortAscending!="")?"&ResortAscending="+resortAscending:"";
	urlStr += (resortDescending!="")?"&ResortDescending="+resortDescending:"";
	if(selectionType!="restrictToCategory") {
		if(resortAscending=="" && resortDescending=="") {
			urlStr += (expand!="")?(expand=="ExpandAll"?"&ExpandAll":"&Expand="+expand):"&CollapseView";
		} else {
			urlStr += "&ExpandAll";
		}
	}
	
	viewLevelUntil = (expand=="ExpandAll"?10:viewLevelUntil);
	
	urlStr += "&Count="+(expand=="ExpandAll"?"1000":dataSetCount);
	urlStr = encodeURI(urlStr);
	//alert("/" + webDbName + "/" + viewName + urlStr);
	if(ajaxReq) {
		runAJAXRequest("/" + webDbName + "/" + viewName + urlStr, "writeCategoryItems");
	} else {
		createAJAXRequest("/" + webDbName + "/" + viewName + urlStr, "writeCategoryItems");
	}
}

function resetView() {
	getCategoryItems("", "", "", "", "", "");
}

function writeCategoryItems() {
	var xmlData = ajaxReq.responseXML;
	//alert(contentID+": \n"+ajaxReq.responseText);
	var viewEntries = xmlData.getElementsByTagName("viewentries");
	var numRows = parseInt(viewEntries[0].getAttribute("toplevelentries"));
	var viewRows = xmlData.getElementsByTagName("viewentry");
	var viewContent = document.getElementById("viewBody"+contentID);
	viewContent.innerHTML="";
	if(viewRows.length>0) {
		formatViewContent(viewRows, viewContent, "replace");
		expandSelectedRow(viewRows);
	} else {
		if(errorResponse=="") { errorResponse = noViewEntries; }
		if(errorResponse=="") { errorResponse = "- empty result -"; }
		thisRowHTML = "<div style=\"clear: both; margin: 10px; width: 385px; border-left: 2px solid #182b45; padding-left: 20px; background-image:url('/" + webDbName + "/pics/common/info.gif'); background-repeat: no-repeat; background-position: 0px 0px;\">" + errorResponse + "</div>";
		viewContent.innerHTML = thisRowHTML;
	}
	contentID = "";
	innerDB = "";
	innerView = "";
	restrictToCategory = "";
	errorResponse = "";
}

function retrieveNextLevelDownChoices(){
	var parentDiv;
	var childDiv;
	var xmlData = ajaxReq.responseXML;
	//alert(ajaxReq.responseText);
	var viewRows = xmlData.getElementsByTagName("viewentry");
	var numChildren = viewRows[0].getAttribute("children");
	var posNum = viewRows[viewRows.length-1].getAttribute("position").split(".");
	var lastRow = posNum[posNum.length-1];

	positionVal = viewRows[0].getAttribute("position");
	parentDiv = document.getElementById(curViewPos);
	childDiv = document.getElementById(curViewPos + contentID + "Child");
	childDiv.style.display = "block";
	formatViewContent(viewRows, childDiv, "append");
	document.getElementById(curViewPos + contentID).style.backgroundImage = "url('/" + webDbName + "/pics/tree/minus.gif')";
	contentID = "";
	innerDB = "";
	innerView = "";
	restrictToCategory = "";
}

function formatViewContent(viewRows, divContainer, inplaceType) {
	var thisRowHTML = "";
	var thisRowDescds;
	var viewRowLevel;
	var positionVal;
	var linkVal;
	var oldPositionVal = "";
	var newPositionVal = "";
	
	for(var i=0; i<viewRows.length; i++) {
		positionVal = viewRows[i].getAttribute("position");
		viewRowLevel = positionVal.split(".").length;
		if((viewRowLevel>=viewLevelCurrent) && (viewRowLevel<=viewLevelUntil+1))  {
			thisRowDescds = parseInt(viewRows[i].getAttribute("children"));
			linkVal = getViewRowValues(viewRows[i]);
			if(linkVal!=null) {
				if (thisRowDescds > 0) {
					if(document.getElementById(positionVal)==null) {
						thisRowHTML = "<div id=\"" + positionVal + contentID + "\" class=\"level" + (viewRowLevel-1) + "\" ";
						thisRowHTML += "onClick=\"checkLevelAction('" + ((innerDB=="")?webDbName:innerDB) +"', '" + ((innerView=="")?viewName:innerView) +"', '" + contentID + "', '" + restrictToCategory + "', '" + positionVal + "', '" + thisRowDescds + "');\" style=\"background-repeat: no-repeat; background-image:url('/" + webDbName + "/pics/tree/plus.gif')\">";
						thisRowHTML += "<img src=\"/" + webDbName + "/pics/common/no.gif\" alt=\"+\" width=\"9\" height=\"9\" />";
						for(r=0; r<linkVal.length; r++) {
							thisRowHTML += linkVal[r];
						}
						thisRowHTML += "</div>";
						thisRowHTML += "<div id=\"" + positionVal + contentID + "Child\" style=\"display:none;\"></div>";
					}
				} else {
					if(document.getElementById(positionVal)==null) {
						thisRowHTML = "<div id=\"" + positionVal + contentID + "\" >";
						if(linkVal[0].indexOf("<table")==-1) {
							thisRowHTML += "<div class=\"finalRow\"><table><tr>";
						}
						for(r=0; r<linkVal.length; r++) {
							thisRowHTML += decodeURI(linkVal[r]);
						}
						if(linkVal[0].indexOf("<table")==-1) {
							thisRowHTML += "</tr></table></div>";
						}
						thisRowHTML += "</div>";
					}
				}
			}
		}
		if(positionVal.split(".").length>1) {
			newPositionVal = positionVal.substring(0, positionVal.lastIndexOf("."));
			var targetContainer = document.getElementById(newPositionVal + contentID + "Child");
		} else {
			var targetContainer = divContainer;
		}
		if(inplaceType=="replace") {
			targetContainer.innerHTML = thisRowHTML;
			inplaceType="append";
		} else {
			targetContainer.innerHTML += thisRowHTML;
		}
	}
}

function expandSelectedRow(viewRows) {
	var positionVal;

	for(var i=0; i<viewRows.length; i++) {
		positionVal = viewRows[i].getAttribute("position");
		if(positionVal.split(".").length>1) {
			newPositionVal = positionVal.substring(0, positionVal.lastIndexOf("."));
			flagAlreadyInArray=false;
			for(j=0;j<arrCheckAction.length;j++) {
				if(arrCheckAction[j].indexOf(newPositionVal+contentID)>=0) { flagAlreadyInArray=true; }
			}
			if(flagAlreadyInArray==false) { arrCheckAction.push(newPositionVal+contentID) };
			var targetContainer = document.getElementById(newPositionVal+contentID+"Child")
			targetContainer.style.display = "block";
			document.getElementById(newPositionVal+contentID).style.backgroundImage = "url('/" + webDbName + "/pics/tree/minus.gif')";
		}
	}
}

function checkLevelAction(inDB, inView, contID, restrCat, newVal, childrenCount) {
	flagInArray=false;
	
	for(i=0; i<arrCheckAction.length; i++) {
		if(arrCheckAction[i].indexOf(newVal+contID)>=0 && arrCheckAction[i].length==((newVal.length)+(contID.length))) {
			flagInArray=true;
			if(document.getElementById(arrCheckAction[i] + "Child").style.display == "none") {
				openLevel(arrCheckAction[i]);
			} else {
				closeLevel(arrCheckAction[i]);
			}
			i = arrCheckAction.length
		}
	}

	if (flagInArray==false) {
		arrCheckAction.push(newVal+contID);
		getNextLevel(inDB, inView, contID, restrCat, newVal, parseInt(childrenCount)+1);
	}
}

function getNextLevel(inDB, inView, contID, restrCat, newVal, childrenCount) {
	viewLevelCurrent = newVal.split(".").length + ((restrCat!="")?1:0);
	viewLevelUntil = newVal.split(".").length + ((restrCat!="")?1:0);

	curViewPos = newVal;
	childDiv = document.getElementById(curViewPos + contID + "Child");
	
	if(restrCat!="") {
		var urlStr = "?ReadViewEntries&RestrictToCategory=" + restrCat + "&Start=" + newVal + "&Expand=" + newVal + "&Count=" + childrenCount;
	} else {
		var urlStr = "?ReadViewEntries&Start=" + newVal + "&Expand=" + newVal + "&Count=" + childrenCount;
	}
	//alert(urlStr);
	restrictToCategory = restrCat;
	contentID = contID;
	innerDB = inDB;
	innerView = inView;
	runAJAXRequest("/" + innerDB + "/" + innerView + urlStr, "retrieveNextLevelDownChoices");
}

function openLevel(thisVal) {
	curRowId = thisVal;
	document.getElementById(curRowId).style.backgroundImage = "url('/" + webDbName + "/pics/tree/minus.gif')";
	document.getElementById(curRowId + "Child").style.display = "block";
}

function closeLevel(thisVal) {
	curRowId = thisVal;
	document.getElementById(curRowId).style.backgroundImage = "url('/" + webDbName + "/pics/tree/plus.gif')";
	document.getElementById(curRowId + "Child").style.display = "none";
}

function getViewRowValues(row) {
   colValsArray = new Array();
   getColumnValues(row);
   return colValsArray;
}

function getColumnValues(rowOrCol){
   var node = rowOrCol.firstChild;
   while (node != null){
      if ((node.nodeType == 3 || node.nodeType == 4) && node.nodeValue != "\n") {
		nodeParent = node.parentNode;
      	while (!(nodeParent.getAttribute("name"))) {
      		nodeParent = nodeParent.parentNode;
		} //nodeParent = node.parentNode.parentNode;
    			colValsArray[colValsArray.length] = (node.nodeValue=="")?"-":node.nodeValue;
      } else if (node.nodeType == 1) {
         getColumnValues(node);
      }
      node = node.nextSibling;
   }
}