%@ Language=VBScript %>
html>
head>
link rel="stylesheet" href="tree.css">
title>tree/title>
/head>
!-- #include file="tree.asp" -->
%
'========================================
' BUILDING A TREE PROGRAMATICALLY
'========================================
' This approach would be best suited for building
' dynamic trees using For..Next loops and such.
Set MyTree2 = New Tree
MyTree2.Top = 10
MyTree2.Left = 10
MyTree2.ExpandImage = "plus.gif"
MyTree2.CollapseImage = "minus.gif"
MyTree2.LeafImage = "webpage.gif"
' Notice the indentation used to reprensent the hierarchy
Set Node1 = MyTree2.CreateChild("script")
Set SubNode1 = Node1.CreateChild("server")
Set secSubNode1 = SubNode1.CreateChild("html")
secSubNode1.CreateChild "A HREF=""http://127.0.0.1/"">asp/A>"
secSubNode1.CreateChild "A HREF=""http://127.0.0.1/"">php/A>"
secSubNode1.CreateChild "A HREF=""http://127.0.0.1/"">jsp/A>"
Set SubNode2 = Node1.CreateChild("os")
SubNode2.CreateChild "A HREF=""#"">winnt/A>"
SubNode2.CreateChild "A HREF=""#"">win2000/A>"
Set Node2 = MyTree2.CreateChild("Desktop")
Node2.CreateChild "A HREF=""#"">Area Code Lookup/A>"
Node2.CreateChild "A HREF=""#"">Arin Based Whois Search/A>"
Node2.CreateChild "A HREF=""#"">World Time Zone Map/A>"
MyTree2.Draw()
Set MyTree2 = Nothing
%>
/BODY>
/HTML>
%
'******************************************************
' Author: Jacob Gilley
' Email: avis7@airmail.net
' My Terms: You can use this control in anyway you see fit
' cause I have no means to enforce any guidelines
' or BS that most developers think they can get
' you to agree to by spouting out words like
' "intellectual property" and "The Code Gods".
' - Viva la Microsoft!
'******************************************************
Dim gblTreeNodeCount:gblTreeNodeCount = 1
Class TreeNode
Public Value
Public ExpandImage
Public CollapseImage
Public LeafImage
Public Expanded
Private mszName
Private mcolChildren
Private mbChildrenInitialized
Public Property Get ChildCount()
ChildCount = mcolChildren.Count
End Property
Private Sub Class_Initialize()
mszName = "node" CStr(gblTreeNodeCount)
gblTreeNodeCount = gblTreeNodeCount + 1
mbChildrenInitialized = False
Expanded = False
End Sub
Private Sub Class_Terminate()
If mbChildrenInitialized And IsObject(mcolChildren) Then
mcolChildren.RemoveAll()
Set mcolChildren = Nothing
End If
End Sub
Private Sub InitChildList()
Set mcolChildren = Server.CreateObject("Scripting.Dictionary")
mbChildrenInitialized = True
End Sub
Private Sub LoadState()
If Request(mszName) = "1" Or Request("togglenode") = mszName Then
Expanded = True
End If
End Sub
Public Function CreateChild(szValue)
If Not mbChildrenInitialized Then InitChildList()
Set CreateChild = New TreeNode
CreateChild.Value = szValue
CreateChild.ExpandImage = ExpandImage
CreateChild.CollapseImage = CollapseImage
CreateChild.LeafImage = LeafImage
mcolChildren.Add mcolChildren.Count + 1, CreateChild
End Function
Public Sub Draw()
LoadState()
Response.Write "table border=""0"">" vbCrLf
Response.Write "tr>td>" vbCrLf
If Expanded Then
Response.Write "a href=""javascript:collapseNode('" mszName "')"">img src=""" CollapseImage """ border=""0"">/a>" vbCrLf
ElseIf Not mbChildrenInitialized Then
Response.Write "img src=""" LeafImage """ border=0>" vbCrLf
Else
Response.Write "a href=""javascript:expandNode('" mszName "')"">img src=""" ExpandImage """ border=""0"">/a>" vbCrLf
End If
Response.Write "/td>" vbCrLf
Response.Write "td>" Value "/td>/tr>" vbCrLf
If Expanded Then
Response.Write "input type=""hidden"" name=""" mszName """ value=""1"">" vbCrLf
If mbChildrenInitialized Then
Response.Write "tr>td> /td>" vbCrLf
Response.Write "td>" vbCrLf
For Each ChildNode In mcolChildren.Items
ChildNode.Draw()
Next
Response.Write "/td>" vbCrLf
Response.Write "/tr>" vbCrLf
End If
End If
Response.Write "/table>" vbCrLf
End Sub
End Class
Class Tree
Public Top
Public Left
Public ExpandImage
Public CollapseImage
Public LeafImage
Private mszPosition
Private mcolChildren
Public Property Let Absolute(bData)
If bData Then mszPosition = "absolute" Else mszPosition = "relative"
End Property
Public Property Get Absolute()
Absolute = CBool(mszPosition = "absolute")
End Property
Private Sub Class_Initialize()
Set mcolChildren = Server.CreateObject("Scripting.Dictionary")
mnTop = 0
mnLeft = 0
mszPosition = "absolute"
End Sub
Private Sub Class_Terminate()
mcolChildren.RemoveAll()
Set mcolChildren = Nothing
End Sub
Public Function CreateChild(szValue)
Set CreateChild = New TreeNode
CreateChild.Value = szValue
CreateChild.ExpandImage = ExpandImage
CreateChild.CollapseImage = CollapseImage
CreateChild.LeafImage = LeafImage
mcolChildren.Add mcolChildren.Count + 1, CreateChild
End Function
Public Sub LoadTemplate(szFileName)
Dim objWorkingNode
Dim colNodeStack
Dim fsObj, tsObj
Dim szLine
Dim nCurrDepth, nNextDepth
Set colNodeStack = Server.CreateObject("Scripting.Dictionary")
Set fsObj = CreateObject("Scripting.FileSystemObject")
Set tsObj = fsObj.OpenTextFile(szFileName, 1)
nCurrDepth = 0
While Not tsObj.AtEndOfLine
nNextDepth = 1
szLine = tsObj.ReadLine()
If nCurrDepth = 0 Then
Set objWorkingNode = CreateChild(Trim(szLine))
nCurrDepth = 1
Else
While Mid(szLine,nNextDepth,1) = vbTab Or Mid(szLine,nNextDepth,1) = " "
nNextDepth = nNextDepth + 1
WEnd
If nNextDepth > 1 Then szLine = Trim(Mid(szLine,nNextDepth))
If szLine > "" Then
If nNextDepth > nCurrDepth Then
If colNodeStack.Exists(nCurrDepth) Then
Set colNodeStack.Item(nCurrDepth) = objWorkingNode
Else
colNodeStack.Add nCurrDepth, objWorkingNode
End If
Set objWorkingNode = objWorkingNode.CreateChild(szLine)
nCurrDepth = nCurrDepth + 1
ElseIf nNextDepth = nCurrDepth Then
If nNextDepth > 1 Then
nNextDepth = nNextDepth - 1
While Not colNodeStack.Exists(nNextDepth) And nNextDepth > 1
nNextDepth = nNextDepth - 1
WEnd
Set objWorkingNode = colNodeStack.Item(nNextDepth)
Set objWorkingNode = objWorkingNode.CreateChild(szLine)
nNextDepth = nNextDepth + 1
Else
Set objWorkingNode = CreateChild(szLine)
End If
nCurrDepth = nNextDepth
End If
End If
End If
WEnd
tsObj.Close()
Set tsObj = Nothing
Set fsObj = Nothing
colNodeStack.RemoveAll()
Set colNodeStack = Nothing
End Sub
Public Sub Draw()
AddClientScript()
Response.Write "div id=""treectrl"" style=""left: " Left "px; top: " Top "px; position: " mszPosition ";"">" vbCrLf
Response.Write "form name=""treectrlfrm"" action=""" Request.ServerVariables("SCRIPT_NAME") """ method=""get"">" vbCrLf
Response.Write "table border=""0"">" vbCrLf
Response.Write "tr>td>" vbCrLf
For Each ChildNode In mcolChildren.Items
ChildNode.Draw()
Next
Response.Write "/td>/tr>" vbCrLf
Response.Write "/table>" vbCrLf
Response.Write "input type=""hidden"" name=""togglenode"" value="""">" vbCrLf
Response.Write "/form>" vbCrLf
Response.Write "/div>" vbCrLf
End Sub
Private Sub AddClientScript()
%>
script language="JavaScript">
function expandNode(szNodeName)
{
if(document.layers != null) {
document.treectrl.document.treectrlfrm.togglenode.value = szNodeName;
document.treectrl.document.treectrlfrm.submit();
}
else {
document.all["treectrlfrm"].togglenode.value = szNodeName;
document.all["treectrlfrm"].submit();
}
}
function collapseNode(szNodeName)
{
if(document.layers != null) {
document.treectrl.document.treectrlfrm.elements[szNodeName].value = -1;
document.treectrl.document.treectrlfrm.submit();
}
else {
document.treectrlfrm.elements[szNodeName].value = -1;
document.treectrlfrm.submit();
}
}
/script>
%
End Sub
End Class
%>
