这是使用ＰＨＰ编程的虚拟社区ＭySQL的简易版
源代码在线查看： function.js
function Folder(folderDescription, hreference)
{
this.desc = folderDescription
this.hreference = hreference
this.id = -1
this.navObj = 0
this.iconImg = 0
this.nodeImg = 0
this.isLastNode = 0
this.isOpen = true
this.iconSrc = "images/folderopen.gif"
this.children = new Array
this.nChildren = 0
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 = "images/mlastnode.gif"
else
folder.nodeImg.src = "images/mnode.gif"
folder.iconImg.src = "images/folderopen.gif"
for (i=0; i folder.children[i].display()
}
else
{
if (folder.nodeImg)
if (folder.isLastNode)
folder.nodeImg.src = "images/plastnode.gif"
else
folder.nodeImg.src = "images/pnode.gif"
folder.iconImg.src = "images/folderclosed.gif"
for (i=0; 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 = ""
else
auxEv = ""
if (level>0)
if (lastNode)
{
this.renderOb(leftSide + auxEv + "")
leftSide = leftSide + ""
this.isLastNode = 1
}
else
{
this.renderOb(leftSide + auxEv + "")
leftSide = leftSide + ""
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("")
}
doc.write(" if (browserVersion == 1)
doc.write(" id='folder" + this.id + "' style='position:block;' ")
doc.write(" border=0 cellspacing=0 cellpadding=0>")
doc.write("")
doc.write(leftSide)
this.outputLink()
doc.write(" doc.write("src='" + this.iconSrc+"' border=0>")
doc.write("")
if (USETEXTLINKS)
{
this.outputLink()
doc.write(this.desc + "")
}
else
doc.write(this.desc)
doc.write("")
doc.write("")
if (browserVersion == 2) {
doc.write("")
}
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
}
}
function outputFolderLink()
{
if (this.hreference)
{
doc.write(" if (browserVersion > 0)
doc.write("onClick='javascript:clickOnFolder("+this.id+")'")
doc.write(">")
}
else
doc.write("")
}
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)
se = se + this.children[i].subEntries()
}
return se
}
function Item(itemDescription, itemLink)
{
this.desc = itemDescription
this.link = itemLink
this.id = -1
this.navObj = 0
this.iconImg = 0
this.iconSrc = "images/doc.gif"
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)
{
this.createIndex()
if (level>0)
if (lastNode)
{
this.renderOb(leftSide + "")
leftSide = leftSide + ""
}
else
{
this.renderOb(leftSide + "")
leftSide = leftSide + ""
}
else
this.renderOb("")
}
function drawItem(leftSide)
{
if (browserVersion == 2)
doc.write("")
doc.write(" if (browserVersion == 1)
doc.write(" id='item" + this.id + "' style='position:block;' ")
doc.write(" border=0 cellspacing=0 cellpadding=0>")
doc.write("")
doc.write(leftSide)
doc.write("")
doc.write(" doc.write("src='"+this.iconSrc+"' border=0>")
doc.write("")
doc.write("")
if (USETEXTLINKS)
doc.write("" + this.desc + "")
else
doc.write(this.desc)
doc.write("")
if (browserVersion == 2)
doc.write("")
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
}
}
function display()
{
if (browserVersion == 1)
this.navObj.style.display = "block"
else
this.navObj.visibility = "show"
}
function createEntryIndex()
{
this.id = nEntries
indexOfEntries[nEntries] = this
nEntries++
}
function totalHeight()
{
var h = this.navObj.clip.height
var i = 0
if (this.isOpen)
for (i=0 ; i < this.nChildren; i++)
h = h + this.children[i].totalHeight()
return h
}
function clickOnFolder(folderId)
{
var clicked = indexOfEntries[folderId]
if (!clicked.isOpen)
clickOnNode(folderId)
return
if (clicked.isSelected)
return
}
function clickOnNode(folderId)
{
var clickedFolder = 0
var state = 0
clickedFolder = indexOfEntries[folderId]
state = clickedFolder.isOpen
clickedFolder.setState(!state)
}
function initializeDocument()
{
if (doc.all)
browserVersion = 1
else
if (doc.layers)
browserVersion = 2
else
browserVersion = 0
foldersTree.initialize(0, 1, "")
foldersTree.display()
if (browserVersion > 0)
{
doc.write(" ")
clickOnNode(0)
clickOnNode(0)
}
}
function gFld(description, hreference)
{
folder = new Folder(description, hreference)
return folder
}
function gLnk(target, description, linkData)
{
fullLink = ""
if (target==0)
{
fullLink = "'"+linkData+"' target=\"Main\""
}
else
{
if (target==1)
fullLink = "'http://"+linkData+"' target=_blank"
else
fullLink = "'http://"+linkData+"' target=\"Main\""
}
linkItem = new Item(description, fullLink)
return linkItem
}
function insFld(parentFolder, childFolder)
{
return parentFolder.addChild(childFolder)
}
function insDoc(parentFolder, document)
{
parentFolder.addChild(document)
}
USETEXTLINKS = 1
indexOfEntries = new Array
nEntries = 0
doc = document
browserVersion = 0
selectedFolder=0
