function Folder(folderDescription, hreference) //constructor
{
//constant data
this.desc = folderDescription
this.hreference = hreference
this.id = -1
this.navObj = 0
this.iconImg = 0
this.nodeImg = 0
this.isLastNode = 0
//dynamic data
this.isOpen = true
this.iconSrc = "ftv2folderopen.gif"
this.children = new Array
this.nChildren = 0
//methods
this.initialize = initializeFolder
this.setState = setStateFolder
this.addChild = addChild
this.createIndex = createEntryIndex
this.hide = hideFolder
this.display = display
this.renderOb = drawFolder
this.totalHeight = totalHeight
this.subEntries = folderSubEntries
this.outputLink = outputFolderLink
}
function setStateFolder(isOpen)
{
var subEntries
var totalHeight
var fIt = 0
var i=0
if (isOpen == this.isOpen)
return
if (browserVersion == 2)
{
totalHeight = 0
for (i=0; i < this.nChildren; i++)
totalHeight = totalHeight + this.children[i].navObj.clip.height
subEntries = this.subEntries()
if (this.isOpen)
totalHeight = 0 - totalHeight
for (fIt = this.id + subEntries + 1; fIt < nEntries; fIt++)
indexOfEntries[fIt].navObj.moveBy(0, totalHeight)
}
this.isOpen = isOpen
propagateChangesInState(this)
}
function propagateChangesInState(folder)
{
var i=0
if (folder.isOpen)
{
if (folder.nodeImg)
if (folder.isLastNode)
folder.nodeImg.src = folder.nChildren?"ftv2mlastnode.gif" :"22.bmp"
else
folder.nodeImg.src = folder.nChildren?"ftv2mnode.gif" :"11.bmp"
folder.iconImg.src = "ftv2folderopen.gif"
for (i=0; i<folder.nChildren; i++)
folder.children[i].display()
}
else
{
if (folder.nodeImg)
if (folder.isLastNode)
folder.nodeImg.src = folder.nChildren?"ftv2plastnode.gif" :"22.bmp"
else
folder.nodeImg.src = folder.nChildren?"ftv2pnode.gif" :"11.bmp"
folder.iconImg.src = folder.nChildren?"ftv2folderclosed.gif" :"ftv2folderopen.gif"
for (i=0; i<folder.nChildren; i++)
folder.children[i].hide()
}
}
function hideFolder()
{
if (browserVersion == 1) {
if (this.navObj.style.display == "none")
return
this.navObj.style.display = "none"
} else {
if (this.navObj.visibility == "hiden")
return
this.navObj.visibility = "hiden"
}
this.setState(0)
}
function initializeFolder(level, lastNode, leftSide)
{
var j=0
var i=0
var numberOfFolders
var numberOfDocs
var nc
nc = this.nChildren
this.createIndex()
var auxEv = ""
if (browserVersion > 0)
auxEv = "<a href='javascript:clickOnNode("+this.id+")' >"
else
auxEv = "<a>"
if (level>0)
if (lastNode) //the last 'brother' in the children array
{
this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='ftv2mlastnode.gif' width=16 height=22 border=0></a>")
leftSide = leftSide + "<img src='ftv2blank.gif' width=16 height=22>"
this.isLastNode = 1
}
else
{
this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='ftv2mnode.gif' width=16 height=22 border=0></a>")
leftSide = leftSide + "<img src='ftv2vertline.gif' width=16 height=22>"
this.isLastNode = 0
}
else
this.renderOb("")
if (nc > 0)
{
level = level + 1
for (i=0 ; i < this.nChildren; i++)
{
if (i == this.nChildren-1)
this.children[i].initialize(level, 1, leftSide)
else
this.children[i].initialize(level, 0, leftSide)
}
}
}
function drawFolder(leftSide)
{ if (browserVersion == 2) {
if (!doc.yPos)
doc.yPos=8
doc.write("<layer id='folder" + this.id + "' top=" + doc.yPos + " visibility=hiden>")
}
doc.write("<table class='content_style' ")
if (browserVersion == 1)
doc.write(" id='folder" + this.id + "' style='position:block;' ")
doc.write(" border=0 cellspacing=0 cellpadding=0>")
doc.write("<tr><td>")
doc.write(leftSide)
this.outputLink()
doc.write("<img name='folderIcon" + this.id + "' ")
doc.write("src='" + this.iconSrc+"' border=0></a>")
doc.write("</td><td valign=middle nowrap>")
if (USETEXTLINKS)
{
this.outputLink()
doc.write(this.desc + "</a>")
}
else
doc.write(this.desc)
doc.write("</td>")
doc.write("</table>")
if (browserVersion == 2) {
doc.write("</layer>")
}
if (browserVersion == 1) {
this.navObj = doc.all["folder"+this.id]
this.iconImg = doc.all["folderIcon"+this.id]
this.nodeImg = doc.all["nodeIcon"+this.id]
} else if (browserVersion == 2) {
this.navObj = doc.layers["folder"+this.id]
this.iconImg = this.navObj.document.images["folderIcon"+this.id]
this.nodeImg = this.navObj.document.images["nodeIcon"+this.id]
doc.yPos=doc.yPos+this.navObj.clip.height
}
}
{
//constant data
this.desc = folderDescription
this.hreference = hreference
this.id = -1
this.navObj = 0
this.iconImg = 0
this.nodeImg = 0
this.isLastNode = 0
//dynamic data
this.isOpen = true
this.iconSrc = "ftv2folderopen.gif"
this.children = new Array
this.nChildren = 0
//methods
this.initialize = initializeFolder
this.setState = setStateFolder
this.addChild = addChild
this.createIndex = createEntryIndex
this.hide = hideFolder
this.display = display
this.renderOb = drawFolder
this.totalHeight = totalHeight
this.subEntries = folderSubEntries
this.outputLink = outputFolderLink
}
function setStateFolder(isOpen)
{
var subEntries
var totalHeight
var fIt = 0
var i=0
if (isOpen == this.isOpen)
return
if (browserVersion == 2)
{
totalHeight = 0
for (i=0; i < this.nChildren; i++)
totalHeight = totalHeight + this.children[i].navObj.clip.height
subEntries = this.subEntries()
if (this.isOpen)
totalHeight = 0 - totalHeight
for (fIt = this.id + subEntries + 1; fIt < nEntries; fIt++)
indexOfEntries[fIt].navObj.moveBy(0, totalHeight)
}
this.isOpen = isOpen
propagateChangesInState(this)
}
function propagateChangesInState(folder)
{
var i=0
if (folder.isOpen)
{
if (folder.nodeImg)
if (folder.isLastNode)
folder.nodeImg.src = folder.nChildren?"ftv2mlastnode.gif" :"22.bmp"
else
folder.nodeImg.src = folder.nChildren?"ftv2mnode.gif" :"11.bmp"
folder.iconImg.src = "ftv2folderopen.gif"
for (i=0; i<folder.nChildren; i++)
folder.children[i].display()
}
else
{
if (folder.nodeImg)
if (folder.isLastNode)
folder.nodeImg.src = folder.nChildren?"ftv2plastnode.gif" :"22.bmp"
else
folder.nodeImg.src = folder.nChildren?"ftv2pnode.gif" :"11.bmp"
folder.iconImg.src = folder.nChildren?"ftv2folderclosed.gif" :"ftv2folderopen.gif"
for (i=0; i<folder.nChildren; i++)
folder.children[i].hide()
}
}
function hideFolder()
{
if (browserVersion == 1) {
if (this.navObj.style.display == "none")
return
this.navObj.style.display = "none"
} else {
if (this.navObj.visibility == "hiden")
return
this.navObj.visibility = "hiden"
}
this.setState(0)
}
function initializeFolder(level, lastNode, leftSide)
{
var j=0
var i=0
var numberOfFolders
var numberOfDocs
var nc
nc = this.nChildren
this.createIndex()
var auxEv = ""
if (browserVersion > 0)
auxEv = "<a href='javascript:clickOnNode("+this.id+")' >"
else
auxEv = "<a>"
if (level>0)
if (lastNode) //the last 'brother' in the children array
{
this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='ftv2mlastnode.gif' width=16 height=22 border=0></a>")
leftSide = leftSide + "<img src='ftv2blank.gif' width=16 height=22>"
this.isLastNode = 1
}
else
{
this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='ftv2mnode.gif' width=16 height=22 border=0></a>")
leftSide = leftSide + "<img src='ftv2vertline.gif' width=16 height=22>"
this.isLastNode = 0
}
else
this.renderOb("")
if (nc > 0)
{
level = level + 1
for (i=0 ; i < this.nChildren; i++)
{
if (i == this.nChildren-1)
this.children[i].initialize(level, 1, leftSide)
else
this.children[i].initialize(level, 0, leftSide)
}
}
}
function drawFolder(leftSide)
{ if (browserVersion == 2) {
if (!doc.yPos)
doc.yPos=8
doc.write("<layer id='folder" + this.id + "' top=" + doc.yPos + " visibility=hiden>")
}
doc.write("<table class='content_style' ")
if (browserVersion == 1)
doc.write(" id='folder" + this.id + "' style='position:block;' ")
doc.write(" border=0 cellspacing=0 cellpadding=0>")
doc.write("<tr><td>")
doc.write(leftSide)
this.outputLink()
doc.write("<img name='folderIcon" + this.id + "' ")
doc.write("src='" + this.iconSrc+"' border=0></a>")
doc.write("</td><td valign=middle nowrap>")
if (USETEXTLINKS)
{
this.outputLink()
doc.write(this.desc + "</a>")
}
else
doc.write(this.desc)
doc.write("</td>")
doc.write("</table>")
if (browserVersion == 2) {
doc.write("</layer>")
}
if (browserVersion == 1) {
this.navObj = doc.all["folder"+this.id]
this.iconImg = doc.all["folderIcon"+this.id]
this.nodeImg = doc.all["nodeIcon"+this.id]
} else if (browserVersion == 2) {
this.navObj = doc.layers["folder"+this.id]
this.iconImg = this.navObj.document.images["folderIcon"+this.id]
this.nodeImg = this.navObj.document.images["nodeIcon"+this.id]
doc.yPos=doc.yPos+this.navObj.clip.height
}
}
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{ if (this.hreference)
{
//此处 target 是目录要去往的 iframe 的名称
//doc.write("<a href='" + this.hreference + "' TARGET=\"basefrm\" ")
doc.write("<a href='" + this.hreference + "' TARGET=mainFrame ")
if (browserVersion > 0 && this.desc != '全部信息')
doc.write("onClick='javascript:clickOnNode("+this.id+")'")
doc.write(" class='content_style' >")
}
else
doc.write("<a>")
// doc.write("<a href='javascript:clickOnFolder("+this.id+")'>")
}
function addChild(childNode)
{
this.children[this.nChildren] = childNode
this.nChildren++
return childNode
}
function folderSubEntries()
{
var i = 0
var se = this.nChildren
for (i=0; i < this.nChildren; i++){
if (this.children[i].children) //is a folder
se = se + this.children[i].subEntries()
}
return se
}
// Definition of class Item (a document or link inside a Folder)
// *************************************************************
function Item(itemDescription, itemLink) // Constructor
{
// constant data
this.desc = itemDescription
this.link = itemLink
this.id = -1 //initialized in initalize()
this.navObj = 0 //initialized in render()
this.iconImg = 0 //initialized in render()
this.iconSrc = "ftv2doc.gif"
// methods
this.initialize = initializeItem
this.createIndex = createEntryIndex
this.hide = hideItem
this.display = display
this.renderOb = drawItem
this.totalHeight = totalHeight
}
function hideItem()
{
if (browserVersion == 1) {
if (this.navObj.style.display == "none")
return
this.navObj.style.display = "none"
} else {
if (this.navObj.visibility == "hiden")
return
this.navObj.visibility = "hiden"
}
}
function initializeItem(level, lastNode, leftSide)
{
alert("initializeItem")
this.createIndex() if (level>0)
if (lastNode) //the last 'brother' in the children array
{
this.renderOb(leftSide + "<img src='ftv2lastnode.gif' width=16 height=22>")
leftSide = leftSide + "<img src='ftv2blank.gif' width=16 height=22>"
}
else
{
this.renderOb(leftSide + "<img src='ftv2node.gif' width=16 height=22>")
leftSide = leftSide + "<img src='ftv2vertline.gif' width=16 height=22>"
}
else
this.renderOb("")
}
function drawItem(leftSide)
{
if (browserVersion == 2)
doc.write("<layer id='item" + this.id + "' top=" + doc.yPos + " visibility=hiden>")
doc.write("<table ")
if (browserVersion == 1)
doc.write(" id='item" + this.id + "' style='position:block;' ")
doc.write(" border=0 cellspacing=0 cellpadding=0>")
doc.write("<tr><td>")
doc.write(leftSide)
doc.write("<a href=" + this.link + "target=title>")
doc.write("<img id='itemIcon"+this.id+"' ")
doc.write("src='"+this.iconSrc+"' border=0>")
doc.write("</a>")
doc.write("</td><td valign=middle nowrap>")
if (USETEXTLINKS)
doc.write("<a href=" + this.link + ">" + this.desc + "</a>")
else
doc.write(this.desc)
doc.write("</table>")
if (browserVersion == 2)
doc.write("</layer>")
if (browserVersion == 1) {
this.navObj = doc.all["item"+this.id]
this.iconImg = doc.all["itemIcon"+this.id]
} else if (browserVersion == 2) {
this.navObj = doc.layers["item"+this.id]
this.iconImg = this.navObj.document.images["itemIcon"+this.id]
doc.yPos=doc.yPos+this.navObj.clip.height
}
}
// Methods common to both objects (pseudo-inheritance)
// ********************************************************
function display()
{
if (browserVersion == 1)
this.navObj.style.display = "block"
else
this.navObj.visibility = "show"
}
function createEntryIndex()
{
this.id = nEntries
indexOfEntries[nEntries] = this
nEntries++
}
// total height of subEntries open
function totalHeight() //used with browserVersion == 2
{
var h = this.navObj.clip.height
var i = 0
if (this.isOpen) //is a folder and _is_ open
for (i=0 ; i < this.nChildren; i++)
h = h + this.children[i].totalHeight()
return h
}
// Events
// *********************************************************
function clickOnFolder(folderId)
{
alert(folderId)
var clicked = indexOfEntries[folderId]
if (!clicked.isOpen)
clickOnNode(folderId)
return
if (clicked.isSelected)
return
foldersTree1 = gFld('全部信息','../morenews2.asp?range_id=2') initializeDocument()
}
function clickOnNode(folderId)
{
var clickedFolder = 0
var state = 0 clickedFolder = indexOfEntries[folderId]
state = clickedFolder.isOpen clickedFolder.setState(!state) //open<->close
}
function initializeDocument()
{
if (doc.all)
browserVersion = 1 //IE4
else
if (doc.layers)
browserVersion = 2 //NS4
else
browserVersion = 0 //other foldersTree.initialize(0, 1, "")
foldersTree.display() if (browserVersion > 0)
{
doc.write("<layer top="+indexOfEntries[nEntries-1].navObj.top+"> </layer>")
// close the whole tree
clickOnNode(0)
// open the root folder
clickOnNode(0)
clickOnNode(1)
}
}
// *********************************************************
function gFld(description, hreference)
{
folder = new Folder(description, hreference)
return folder
}
function gLnk(target, description, linkData)
{
fullLink = ""
if (target==0)
{
fullLink = "'"+linkData+"' target=\"basefrm\""
}
else
{
if (target==1)
fullLink = "'http://"+linkData+"' target=_blank"
else
fullLink = "'http://"+linkData+"' target=\"basefrm\""
}
linkItem = new Item(description, fullLink)
return linkItem
}
function insFld(parentFolder, childFolder)
{ return parentFolder.addChild(childFolder)
}
function insDoc(parentFolder, document)
{
parentFolder.addChild(document)
}
function mytree()
{
aux1 = insFld(aux0,gFld('今日热点','../morenews2.asp?range_id=2&ClassName=今日热点'))
aux2 = insFld(aux1,gFld('恐怖笼罩美利坚','../morenews2.asp?range_id=2&ClassName=今日热点:恐怖笼罩美利坚'))
aux2 = insFld(aux1,gFld('巴以冲突','../morenews2.asp?range_id=2&ClassName=今日热点:巴以冲突'))
aux2 = insFld(aux1,gFld('山西一金矿爆炸','../morenews2.asp?range_id=2&ClassName=今日热点:山西一金矿爆炸'))
aux2 = insFld(aux1,gFld('印巴冲突升级','../morenews2.asp?range_id=2&ClassName=今日热点:印巴冲突升级'))
aux2 = insFld(aux1,gFld('关注高考','../morenews2.asp?range_id=2&ClassName=今日热点:关注高考'))
aux2 = insFld(aux1,gFld('各地洪水灾害','../morenews2.asp?range_id=2&ClassName=今日热点:各地洪水灾害'))
aux2 = insFld(aux1,gFld('美国财务欺诈案爆光','../morenews2.asp?range_id=2&ClassName=今日热点:美国财务欺诈案爆光'))
aux2 = insFld(aux1,gFld('北京网吧火灾','../morenews2.asp?range_id=2&ClassName=今日热点:北京网吧火灾'))
aux2 = insFld(aux1,gFld('朝韩军舰交火','../morenews2.asp?range_id=2&ClassName=今日热点:朝韩军舰交火'))
aux2 = insFld(aux1,gFld('两架大型飞机在德国相撞','../morenews2.asp?range_id=2&ClassName=今日热点:两架大型飞机在德国相撞'))
aux2 = insFld(aux1,gFld('其他','../morenews2.asp?range_id=2&ClassName=今日热点:其他'))
}
// Global variables
// ****************
USETEXTLINKS =1
indexOfEntries = new Array
nEntries = 0
doc = document
browserVersion = 0
selectedFolder=0</SCRIPT>
<!-- Execution of the code that actually builds the specific tree -->
<SCRIPT language=javascript>
foldersTree = gFld('全部信息','../morenews2.asp?range_id=2')
aux0 = foldersTree
mytree()
initializeDocument()
</SCRIPT>
</BODY></HTML>
http://colorweb.go.163.com/CodeLib/XML/deeptree.htm
参见