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ASP 中的 关于生成目录树结构的类
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-11-03 浏览: 73 ::
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1。test.asp 调用类生成树 代码如下
<%@ 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>
2。tree.asp 类的定义 代码如下
<%
'******************************************************
' Author: Jacob Gilley
' Email: [email protected]
' 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
Respo
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