<%
' COPYRIGHT NOTICE 
' Copyright 2003 David Swigger All Rights Reserved. 
' email : dswigger@yahoo.com
'
' i_treebuilder.asp may be used and modified free of charge by anyone so long as 
' this copyright notice remains intact. By using this 
' code you agree to indemnify David Swigger from any liability that 
' might arise from its use. 
' 
' Selling the code for this script without prior written consent is 
' expressly forbidden. 
' (END OF COPYRIGHT NOTICE)
' If you add something useful to this,improve it, or use it in something really
' interesting then please send me a note.
%>
<STYLE>
DIV.tree_parent
{ 
	font-family : Arial, serif;
	font-size : 12px;
	font-weight : normal;
	color: black; 
	cursor: hand;	
}
DIV.tree_child
{
	font-family : Arial, serif;
	font-size : 12px;
	font-weight : normal;
	display:none;	
}
.tree_icon
{
	margin-right: 5 ;
}
A.tree_pitem 
{
	color: black; 
	text-decoration:none; 
	cursor: hand;		
}
A.tree_pitem:HOVER {
	color: blue; 
}
A.tree_citem 
{
	color: black; 
	text-decoration:none; 
	cursor: hand;
}
A.tree_citem:HOVER {
	color: blue; 
}
SPAN.tree_data {
	visibility : hidden;
	display :none;
	z-index  : 0;
}
</STYLE>
<script language="javascript">
	// preload the tree images.... (add any specials)
	var bTreeMultiSelect = false;
	var bTreeAllowDeselect = false;
	var oTreeLastSelectedItem = null;
	var oTreeLastSelectedData = null;
	var TreeItemDispatch=null;
	
	var Img1 = new Image();Img1.src = "images/tree/I.gif";	
	var Img2 = new Image();Img2.src = "images/tree/L.gif";	
	var tree_lMinus = new Image();tree_lMinus.src = "images/tree/Lminus.gif";	
	var tree_lPlus = new Image();tree_lPlus.src = "images/tree/Lplus.gif";	
	var Img5 = new Image();Img5.src = "images/tree/T.gif";	
	var tree_TMinus = new Image();tree_TMinus.src = "images/tree/Tminus.gif";	
	var tree_TPlus = new Image();tree_TPlus.src = "images/tree/Tplus.gif";	
	var Img8 = new Image();Img8.src = "images/tree/white.gif";	
	
	// expand or collapse function
	function tree_iconclick(sNodeID)
	{
		oChild = document.getElementById(sNodeID + "Child");
		oController_O = document.getElementById(sNodeID + "_o");
		
		if (oChild.style.display == "none" || oChild.style.display =="") 
		{
			// expanding (which means it has a plus next to it right now)
			oChild.style.display= "block";
			if(oController_O.src == tree_TPlus.src)
				oController_O.src = tree_TMinus.src;
			else
				oController_O.src = tree_lMinus.src;
		}
		else
		{
			// Collapse (has minus next to it)
			oChild.style.display= "none";
			if(oController_O.src == tree_TMinus.src)
				oController_O.src = tree_TPlus.src;
			else
				oController_O.src = tree_lPlus.src;
		}
	}
	// Item click
	function tree_itemclick(sNodeID,sKey)
	{		
		//background : #C5C5C5;
		oItem = document.getElementById(sNodeID + "Item");
		oItemData = document.getElementById(sNodeID + "Data");
		
		// See if its selected....
		if(oItemData.style.zIndex == 0)// nope
		{
			oItemData.style.zIndex =1;
			oItem.style.background  = "#C5C5C5";
			
			if(!bTreeMultiSelect && oTreeLastSelectedItem != null)
			{
				// deselect the last one
				oTreeLastSelectedData.style.zIndex =0;	
				oTreeLastSelectedItem.style.background  = "#FFFFFF";		
				TreeItemDispatch(false,false,oTreeLastSelectedData.innerText);				
			}
			
			oTreeLastSelectedItem = oItem;
			oTreeLastSelectedData =oItemData;
			TreeItemDispatch(false,true,oItemData.innerText);
		}
		else// yup
		{
			if(bTreeAllowDeselect)
			{
				oItemData.style.zIndex =0;		
				oItem.style.background  = "#FFFFFF";
				TreeItemDispatch(false,false,oItemData.innerText);				
				oTreeLastSelected = null;
				oTreeLastSelectedData =null;
			}
			else
				TreeItemDispatch(true,true,oItemData.innerText);	
		}
	}
	// Generic tree item function handler
	// use as prototype then assign your own after including the script....
	function def_TreeItemDispatch(bReslect,bSelected,sKey)
	{
		if(bSelected || bReslect)
		{
			alert(sKey);
		}
	}
	// assign default
	TreeItemDispatch = def_TreeItemDispatch;
</script>
<%
	'========================================================================================================
	' Tree Builder  variables
	'========================================================================================================
	Const tTRUE = 1
	Const tFALSE = 0
	Dim arrBranches(10)' maximum depth of tree before page will bomb
	Dim arrBTypes(10,2)' 10 different types of branches can be made.....
	Dim arrLTypes(10,2)' 10 different types of leaves can be made.....
	Dim arrSpacers(2)
	Dim itree_depth
	Dim itree_exdp
	Dim iTreeID
	Dim sBranchlst
	Dim sBranch
	Dim sLeaf
	Dim sLeaflst
	Dim sTreeTop
	Dim sTree

	sTreeTop = "<div ID=""mParent"" class=parent><img name=""mTree"" src=""~icon~"" class=icon align=""absmiddle"" border=0>~txt~</div><div ID=""mChild"">"
	arrSpacers(0) = "<img src=""images/tree/I.gif"" align=""absmiddle"">"
	arrSpacers(1) = "<img src=""images/tree/white.gif"" align=""absmiddle"">"
	sLeaf = "<DIV>~hist~<img src=""images/tree/T.gif"" align=""absmiddle""><img src=""~icon~"" align=""absmiddle"" class=""tree_icon"" border=0><a HREF=""#"" ID=""m~id~Item"" onClick=""tree_itemclick('m~id~')"" class=tree_citem>~txt~</a><SPAN ID=""m~id~Data"" class=tree_data>~key~</SPAN></DIV>"
	sLeaflst = "<DIV>~hist~<img src=""images/tree/L.gif"" align=""absmiddle""><img src=""~icon~"" align=""absmiddle"" class=""tree_icon"" border=0><a HREF=""#"" ID=""m~id~Item"" onClick=""tree_itemclick('m~id~','~key~')"" class=tree_citem>~txt~</a><SPAN ID=""m~id~Data"" class=tree_data>~key~</SPAN></DIV>"
	sBranchlst = "<div ID=""m~id~Parent"" class=""tree_parent"">~hist~<a name=""m~id~a"" href=""#"" onClick=""tree_iconclick('m~id~')""><img name=""m~id~_o"" src=""images/tree/Lplus.gif"" align=""absmiddle"" border=""0""><img  src=""~icon~"" class=""tree_icon"" align=""absmiddle"" border=0></a><a HREF=""#"" ID=""m~id~Item"" onClick=""tree_itemclick('m~id~')"" class=tree_pitem>~txt~</a><SPAN ID=""m~id~Data"" class=tree_data>~key~</SPAN></div><div ID=""m~id~Child"" CLASS=""tree_child"">"
	sBranch = "<div ID=""m~id~Parent"" class=""tree_parent"">~hist~<a name=""m~id~a"" href=""#"" onClick=""tree_iconclick('m~id~')""><img name=""m~id~_o"" src=""images/tree/Tplus.gif"" align=""absmiddle"" border=""0""><img src=""~icon~"" class=""tree_icon"" align=""absmiddle"" border=0></a><a HREF=""#"" ID=""m~id~Item"" onClick=""tree_itemclick('m~id~')"" class=tree_pitem>~txt~</a><SPAN ID=""m~id~Data"" class=tree_data>~key~</SPAN></div><div ID=""m~id~Child"" CLASS=""tree_child"">"

	'========================================================================================================
	' Tree Builder  functions I am assuming the top item will NOT be dynamic
	'========================================================================================================
	' register a branch type....
	function tree_RegisterBranchType(nType,strImgSrc)	
		arrBTypes(nType,0) = replace(sBranch,"~icon~",strImgSrc)
		arrBTypes(nType,1) = replace(sBranchlst,"~icon~",strImgSrc)
	end function
	' register a leaf type....
	function tree_RegisterLeafType(nType,strImgSrc)	
		arrLTypes(nType,0) = replace(sLeaf,"~icon~",strImgSrc)
		arrLTypes(nType,1) = replace(sLeaflst,"~icon~",strImgSrc)
	end function	
	'Write out start node	
	function tree_Start(sNodeText,sTopImgSrc)
		sTree = replace(sTreeTop,"~icon~",sTopImgSrc)
		sTree = replace(sTree,"~txt~",sNodeText)
		itree_depth = 0
		itree_exdp = 1
		iTreeID =1
	end function
	' end
	function tree_End()
		sTree = sTree & "</div>"
		Response.Write sTree'"</div>"
		sTree=""
	end function	
	' tree_StartBranch
	function tree_StartBranch(nType,nIsLast,sNodeText,sKey)	
		sItem = replace(arrBTypes(nType,nIsLast),"~id~",iTreeID)
		sItem = replace(sItem,"~hist~",arrBranches(itree_depth))
		sItem = replace(sItem,"~txt~",sNodeText)
		sItem = replace(sItem,"~key~",sKey)
		'Response.Write sItem			
		sTree = sTree & sItem
		arrBranches(itree_exdp) = arrBranches(itree_depth) & arrSpacers(nIsLast)
		itree_depth = itree_depth + 1 ' deeper anda deeper we go		
		itree_exdp = itree_depth + 1
		iTreeID = iTreeID + 1
	end function
	' Add a leaf to the tree
	function tree_AddLeaf(nType,nIsLast,sNodeText,sKey)	
		sItem = replace(arrLTypes(nType,nIsLast),"~id~",iTreeID)
		sItem = replace(sItem,"~hist~",arrBranches(itree_depth))
		sItem = replace(sItem,"~txt~",sNodeText)
		sItem = replace(sItem,"~key~",sKey)
		'Response.Write sItem			
		sTree = sTree & sItem
		iTreeID = iTreeID + 1
	end function	
	' end node (really simple)
	function tree_EndBranch()
		sTree = sTree & "</div>"
		'Response.Write sCurBranch
		itree_depth = itree_depth - 1
		itree_exdp = itree_depth + 1
	end function
%>