var webstandard = false

function makeRequest(url, targetSpan, doCount, expandAll) {
//From w3schools - makes the proper request - after being modified for IE 7...
	
	var design_request = false;
	
	if (window.XMLHttpRequest) { // Mozilla, Safari, ... AND IE 7...
		webstandard = true
		design_request = new XMLHttpRequest();
		if (design_request.overrideMimeType) {
			design_request.overrideMimeType('text/xml');
		}
		if (!design_request) {
			alert('Giving up :( Cannot create an XMLHTTP instance');
			return false;
		}
	} else if (window.ActiveXObject) { // IE 6 and below
		try {
			design_request = new ActiveXObject("Msxml2.XMLHTTP");
			if (!design_request) {
				alert('Giving up :( Cannot create an XMLHTTP instance');
				return false;
			}
		} catch (e) {
			try {
				design_request = new ActiveXObject("Microsoft.XMLHTTP");
				if (!design_request) {
					alert('Giving up :( Cannot create an XMLHTTP instance');
					return false;
				}
			} catch (e) {
			}
		}
	}
	design_request.onreadystatechange = function() { processDesign(design_request, targetSpan, doCount, expandAll, url); };
	design_request.open('GET', url + "?ReadDesign", true);
	design_request.send(null);
}


function processDesign(design_request, targetSpan, doCount, expandAll, url) {
/*	Charles F. Phillips
	01/27/2007
Once we're sure we have a valid design request, then we mae an entries request.
*/
	if (design_request.readyState == 4) {
		if (design_request.status == 200) {

			var entries_request = false;
			if (window.XMLHttpRequest) { // Mozilla, Safari, ...
				entries_request = new XMLHttpRequest();
				if (entries_request.overrideMimeType) {
					entries_request.overrideMimeType('text/xml');
				}
				if (!entries_request) {
					alert('Giving up :( Cannot create an XMLHTTP instance');
					return false;
				}
			} else if (window.ActiveXObject) { // IE
				try {
					entries_request = new ActiveXObject("Msxml2.XMLHTTP");
					if (!entries_request) {
						alert('Giving up :( Cannot create an XMLHTTP instance');
						return false;
					}
				} catch (e) {
					try {
						entries_request = new ActiveXObject("Microsoft.XMLHTTP");
						if (!entries_request) {
							alert('Giving up :( Cannot create an XMLHTTP instance');
							return false;
						}
					} catch (e) {
					}
				}
			}
			entries_request.onreadystatechange = function() { processEntries(design_request, entries_request, targetSpan, doCount, expandAll); };
			entries_request.open('GET', url + "?ReadViewEntries&PreFormat&ExpandView&Count=-1", true);
			entries_request.send(null);

		} else {
			alert('There was a problem with the entries request.');
		}
	}
}


function processEntries(design_request, entries_request, targetSpan, doCount, expandAll) {
/*	Charles F. Phillips
	01/27/2007
	design_request, - is from the first request generated above
	entries_request, - is from the second request generated above
	targetSpan - allows us to name the spans dynaically so that we can have 
		more than one view on the page and preserve the namespace
	doCount - determines if we will post the child and descendants counts
	expandAll - determines if we post the categories opened or closed
*/
	if (entries_request.readyState == 4) {
		if (entries_request.status == 200) {
			myView = document.getElementById(targetSpan)
			if (myView) {
				
				var XMLEntriesDoc = entries_request.responseXML
				//Parsing the xml document returned from the Notes view, we get the viewentries
				var root_entries = XMLEntriesDoc.getElementsByTagName("viewentries").item(0);
				//If there is no node then set a status message and leave
				if (!root_entries) {myView.innerHTML="No documents found"; return}
				
				var XMLDesignDoc = design_request.responseXML
				//Parsing the xml document returned from the Notes view, we get the view design
				var root_design = XMLDesignDoc.getElementsByTagName("viewdesign").item(0);
				//If there is no node then set a status message and leave
				if (!root_design) {myView.innerHTML="No design found"; return}
				
				//Build an array of table headers before we dive into the entries
				var columns = root_design.getElementsByTagName("column")
				var columnArray = new Array()
				var noncategory = 0
				for (i = 0; i < columns.length; i++){
					if (!columns[i].getAttribute("sortcategorize")) {//skip over categories
						columnArray[noncategory++] = columns[i].getAttribute("title")
					}
				}
				
				//Grab the alternate row color if it exists
				var altrowcolor = ""
				if (root_design.getAttribute("altrowcolor")) {
					altrowcolor = root_design.getAttribute("altrowcolor")
				}
				
				//Parse out the viewentry nodes - we will loop through the view entries to build our links
				var entries = root_entries.getElementsByTagName("viewentry")
				var sTemp = ""
				var columnCurrent = 0
				var columnPrevious = 0
				var closeFlag = false
				var expansion = "none"
				var plusminus = "+"
				if (expandAll) {expansion = "block"; plusminus = "-"}
				for (i = 0; i < entries.length; i++){	
					//If there is a descendants attribute, then it is a category" and we want to handle that entry differently. 
					if (entries[i].getAttribute("descendants")){
						
						//Get the column number and determine what </span> tags we need
						var grandchildren = entries[i].getElementsByTagName("entrydata")
						columnCurrent = parseInt(grandchildren[0].getAttribute("columnnumber"))
						//We ALWAYS close the span if the last loop filled it with documents
						if (closeFlag) {sTemp += "</span>\n"; closeFlag = false}
						//If current < previous, then we are also closing out a parent span
						if (columnCurrent < columnPrevious) {sTemp += "</span>\n"}
						columnPrevious = columnCurrent
						
						//Generate the toggle and the column title
						sTemp += "<span id=\"" + targetSpan + i + "Controller\" " 
							+ "style=\"display:inline;\" class=\"plsminus\" "
							+ "onClick=\"toggleDisplay('" + targetSpan + i + "')\">" + plusminus + "</span>&nbsp;"
						sTemp += getText(entries[i])

						//Determine if we want categories with document counts
						if (doCount) {sTemp += " (" + entries[i].getAttribute("descendants") + ")"}
						sTemp += "<br>\n"
						
						//Create the span that will contain the current element's 
						//children with an appropriate amount of padding
						sTemp += "<span style=\"padding-left: " + ((columnCurrent + 1)  * 20) 
							+ "px; display:" + expansion + ";\" id=\"" + targetSpan + i + "\">\n"

					} else { //a Notes doc!
						//First, we need to start a table for the documetns and fill in the headers
						sTemp += "<table class=\"docTable\">\n"
						sTemp += "<tr>\n"
						for (a = 0; a < columnArray.length; a++){	
							sTemp += "<td class=\"docHeader\">" + columnArray[a] + "</td>\n"
						}
						sTemp += "</tr>\n"
						
						var placeholder = 0
						//the siblings attribute gives us the number of docs in the current 
						//category and we want to handle them in a batch so they  can
						//be put into the same span and use the same display property
						for (doc = 0; doc < entries[i].getAttribute("siblings"); doc++){	
							placeholder = i + doc
							
							//Apply altrowcolor (if any) to even rows
							if (altrowcolor != "" && doc%2) {
								sTemp += "<tr style=\"background-color:" + altrowcolor + "\">\n"
							} else {
								sTemp += "<tr>\n"
							}
							
							//Walk down the collection of column values, making the first one a hyperlink
							var columnValues = entries[placeholder].getElementsByTagName("entrydata")
							for (col = 0; col < columnArray.length; col++){
								sTemp += "<td class=\"docData\">\n"
								if (col == 0) {
									sTemp += "<a href=\"" + location.href.substring(0, location.href.indexOf(".nsf")+4) 
										+ "/0/" + entries[placeholder].getAttribute("unid") + "?OpenDocument\" title=\"Click here to open '" 
										+ getText(columnValues[0]) + "'\">" + getText(columnValues[0]) + "</a>"
								} else {
									sTemp += getText(columnValues[col])
								}
								sTemp += "</td>\n"
							}
							sTemp += "</tr>\n"
						} // end for
						sTemp += "</table>\n"
						//increment i by the value of g so that ther outer
						//for loop picks up where the inner for loop left off.
						i = placeholder
						closeFlag = true
					}
				}
				//Add the final closing tag before posting sTemp because
				//we won't be looping anymore to generate it dynamically
				sTemp += "</span>\n"
				myView.innerHTML = sTemp
				
			} else {
				alert(targetSpan + " not found")
			}
		} else {
			alert('There was a problem with the request.');
		}
	}
}


function getText(element) {
/*	Charles F. Phillips
	01/30/2007
	This reduces a lot of redundancy in processResponse
	Modified to handle IE7
*/
	var agt = navigator.userAgent.toLowerCase();

	if (webstandard) { // Mozilla, Safari, ... AND IE7
		if (agt.indexOf("msie 7.")!=-1) {
			return element.text
		} else {
			return element.textContent
		}
	} else if (window.ActiveXObject) { // IE6 and below
		return element.text
	}
}


function toggleDisplay(targetSpan) {
/*	Charles F. Phillips
	01/27/2007
	This not only toggles the display of thespan, but it changes + to - and back again
*/
	var theSpan = document.getElementById(targetSpan)
	var theController = document.getElementById(targetSpan + "Controller")
	if (theSpan) {
		if (theSpan.style.display == "block") {
			theSpan.style.display = "none"
			theController.innerHTML = "+"
		} else {
			theSpan.style.display = "block"
			theController.innerHTML = "-"
		}
	}
}