关于生成目录树结构的类
本程序有两文件test.asp和tree.asp还有一些图标文件
1。test.asp调用类生成树代码如下
<%@Language=VBScript%>
<html>
<head>
<linkrel="stylesheet"href="tree.css">
<title>tree</title>
</head>
<>
<%
'========================================
'BUILDINGATREEPROGRAMATICALLY
'========================================
'Thisapproachwouldbebestsuitedforbuilding
'dynamictreesusingFor..Nextloopsandsuch.
SetMyTree2=NewTree
MyTree2.Top=10
MyTree2.Left=10
MyTree2.ExpandImage="plus.gif"
MyTree2.CollapseImage="minus.gif"
MyTree2.LeafImage="webpage.gif"
'Noticetheindentationusedtoreprensentthehierarchy
SetNode1=MyTree2.CreateChild("script")
SetSubNode1=Node1.CreateChild("server")
SetsecSubNode1=SubNode1.CreateChild("html")
secSubNode1.CreateChild"<AHREF=""http://127.0.0.1/"">asp</A>"
secSubNode1.CreateChild"<AHREF=""http://127.0.0.1/"">php</A>"
secSubNode1.CreateChild"<AHREF=""http://127.0.0.1/"">jsp</A>"
SetSubNode2=Node1.CreateChild("os")
SubNode2.CreateChild"<AHREF=""#"">winnt</A>"
SubNode2.CreateChild"<AHREF=""#"">win2000</A>"
SetNode2=MyTree2.CreateChild("Desktop")
Node2.CreateChild"<AHREF=""#"">AreaCodeLookup</A>"
Node2.CreateChild"<AHREF=""#"">ArinBasedWhoisSearch</A>"
Node2.CreateChild"<AHREF=""#"">WorldTimeZoneMap</A>"
MyTree2.Draw()
SetMyTree2=Nothing
%>
</BODY>
</HTML>
2。tree.asp类的定义代码如下
<%
'******************************************************
'Author:JacobGilley
'Email:avis7@airmail.net
'MyTerms:Youcanusethiscontrolinanywayyouseefit
'causeIhavenomeanstoenforceanyguidelines
'orBSthatmostdevelopersthinktheycanget
'youtoagreetobyspoutingoutwordslike
'"intellectualproperty"and"TheCodeGods".
'-VivalaMicrosoft!
'******************************************************
DimgblTreeNodeCount:gblTreeNodeCount=1
ClassTreeNode
PublicValue
PublicExpandImage
PublicCollapseImage
PublicLeafImage
PublicExpanded
PrivatemszName
PrivatemcolChildren
PrivatembChildrenInitialized
PublicPropertyGetChildCount()
ChildCount=mcolChildren.Count
EndProperty
PrivateSubClass_Initialize()
mszName="node"&CStr(gblTreeNodeCount)
gblTreeNodeCount=gblTreeNodeCount+1
mbChildrenInitialized=False
Expanded=False
EndSub
PrivateSubClass_Terminate()
IfmbChildrenInitializedAndIsObject(mcolChildren)Then
mcolChildren.RemoveAll()
SetmcolChildren=Nothing
EndIf
EndSub
PrivateSubInitChildList()
SetmcolChildren=Server.CreateObject("Scripting.Dictionary")
mbChildrenInitialized=True
EndSub
PrivateSubLoadState()
IfRequest(mszName)="1"OrRequest("togglenode")=mszNameThen
Expanded=True
EndIf
EndSub
PublicFunctionCreateChild(szValue)
IfNotmbChildrenInitializedThenInitChildList()
SetCreateChild=NewTreeNode
CreateChild.Value=szValue
CreateChild.ExpandImage=ExpandImage
CreateChild.CollapseImage=CollapseImage
CreateChild.LeafImage=LeafImage
mcolChildren.AddmcolChildren.Count+1,CreateChild
EndFunction
PublicSubDraw()
LoadState()
Response.Write"<tableborder=""0"">"&vbCrLf
Response.Write"<tr><td>"&vbCrLf
IfExpandedThen
Response.Write"<ahref=""javascript:collapseNode('"&mszName&"')""><imgsrc="""&CollapseImage&"""border=""0""></a>"&vbCrLf
ElseIfNotmbChildrenInitializedThen
Response.Write"<imgsrc="""&LeafImage&"""border=0>"&vbCrLf
Else
Response.Write"<ahref=""javascript:expandNode('"&mszName&"')""><imgsrc="""&ExpandImage&"""border=""0""></a>"&vbCrLf
EndIf
Response.Write"</td>"&vbCrLf
Response.Write"<td>"&Value&"</td></tr>"&vbCrLf
IfExpandedThen
Response.Write"<inputtype=""hidden""name="""&mszName&"""value=""1"">"&vbCrLf
IfmbChildrenInitializedThen
Response.Write"<tr><td></td>"&vbCrLf
Response.Write"<td>"&vbCrLf
ForEachChildNodeInmcolChildren.Items
ChildNode.Draw()
Next
Response.Write"</td>"&vbCrLf
Response.Write"</tr>"&vbCrLf
EndIf
EndIf
Response.Write"</table>"&vbCrLf
EndSub
EndClass
ClassTree
PublicTop
PublicLeft
PublicExpandImage
PublicCollapseImage
PublicLeafImage
PrivatemszPosition
PrivatemcolChildren
PublicPropertyLetAbsolute(bData)
IfbDataThenmszPosition="absolute"ElsemszPosition="relative"
EndProperty
PublicPropertyGetAbsolute()
Absolute=CBool(mszPosition="absolute")
EndProperty
PrivateSubClass_Initialize()
SetmcolChildren=Server.CreateObject("Scripting.Dictionary")
mnTop=0
mnLeft=0
mszPosition="absolute"
EndSub
PrivateSubClass_Terminate()
mcolChildren.RemoveAll()
SetmcolChildren=Nothing
EndSub
PublicFunctionCreateChild(szValue)
SetCreateChild=NewTreeNode
CreateChild.Value=szValue
CreateChild.ExpandImage=ExpandImage
CreateChild.CollapseImage=CollapseImage
CreateChild.LeafImage=LeafImage
mcolChildren.AddmcolChildren.Count+1,CreateChild
EndFunction
PublicSubLoadTemplate(szFileName)
DimobjWorkingNode
DimcolNodeStack
DimfsObj,tsObj
DimszLine
DimnCurrDepth,nNextDepth
SetcolNodeStack=Server.CreateObject("Scripting.Dictionary")
SetfsObj=CreateObject("Scripting.FileSystemObject")
SettsObj=fsObj.OpenTextFile(szFileName,1)
nCurrDepth=0
WhileNottsObj.AtEndOfLine
nNextDepth=1
szLine=tsObj.ReadLine()
IfnCurrDepth=0Then
SetobjWorkingNode=CreateChild(Trim(szLine))
nCurrDepth=1
Else
WhileMid(szLine,nNextDepth,1)=vbTabOrMid(szLine,nNextDepth,1)=""
nNextDepth=nNextDepth+1
WEnd
IfnNextDepth>1ThenszLine=Trim(Mid(szLine,nNextDepth))
IfszLine<>""Then
IfnNextDepth>nCurrDepthThen
IfcolNodeStack.Exists(nCurrDepth)Then
SetcolNodeStack.Item(nCurrDepth)=objWorkingNode
Else
colNodeStack.AddnCurrDepth,objWorkingNode
EndIf
SetobjWorkingNode=objWorkingNode.CreateChild(szLine)
nCurrDepth=nCurrDepth+1
ElseIfnNextDepth<=nCurrDepthThen
IfnNextDepth>1Then
nNextDepth=nNextDepth-1
WhileNotcolNodeStack.Exists(nNextDepth)AndnNextDepth>1
nNextDepth=nNextDepth-1
WEnd
SetobjWorkingNode=colNodeStack.Item(nNextDepth)
SetobjWorkingNode=objWorkingNode.CreateChild(szLine)
nNextDepth=nNextDepth+1
Else
SetobjWorkingNode=CreateChild(szLine)
EndIf
nCurrDepth=nNextDepth
EndIf
EndIf
EndIf
WEnd
tsObj.Close()
SettsObj=Nothing
SetfsObj=Nothing
colNodeStack.RemoveAll()
SetcolNodeStack=Nothing
EndSub
PublicSubDraw()
AddClientScript()
Response.Write"<divid=""treectrl""style=""left:"&Left&"px;top:"&Top&"px;position:"&mszPosition&";"">"&vbCrLf
Response.Write"<formname=""treectrlfrm""action="""&Request.ServerVariables("SCRIPT_NAME")&"""method=""get"">"&vbCrLf
Response.Write"<tableborder=""0"">"&vbCrLf
Response.Write"<tr><td>"&vbCrLf
ForEachChildNodeInmcolChildren.Items
ChildNode.Draw()
Next
Response.Write"</td></tr>"&vbCrLf
Response.Write"</table>"&vbCrLf
Response.Write"<inputtype=""hidden""name=""togglenode""value="""">"&vbCrLf
Response.Write"</form>"&vbCrLf
Response.Write"</div>"&vbCrLf
EndSub
PrivateSubAddClientScript()
%>
<scriptlanguage="JavaScript">
functionexpandNode(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();
}
}
functioncollapseNode(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>
<%
EndSub
EndClass
%>
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