class_treemenu.js

培训考试系统代码

// 该js脚本用于树型菜单的显示。
var menuImgPath = "/agt/public/images/menuimgs/" ;     // 设定菜单图片的父目录,不可带'.'号
function Folder(folderDescription, hreference) //constructor
{
  //constant data
  descTemp_arr = folderDescription .split("|");
  this.desc=descTemp_arr[0] ;//strRemoveHtml(descTemp_arr[0]);

  if( descTemp_arr[1] == null ) {
	this.folderType = "ftv2Gen"; //default type is iGen
  } else {
	this.folderType = descTemp_arr[1];
  }
//Assign folder default icon,
  if( descTemp_arr[2] == null ) {
	this.iconSrc = menuImgPath + this.folderType + "Folder.gif"   ;
  } else {
	this.iconSrc = descTemp_arr[2];
  }
   //Assign folder open  icon,
  if( descTemp_arr[3] == null ) {
  	Temp_arr1 = this.iconSrc .split(".");
	this.iconSrcOpen = Temp_arr1[0] + "Open.gif" ;
  } else {
	this.iconSrcOpen = descTemp_arr[3];
  }
  //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.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 = menuImgPath + "ftv2mlastnode.gif"
      else
	  folder.nodeImg.src = menuImgPath + "ftv2mnode.gif"
    folder.iconImg.src = folder.iconSrcOpen
    for (i=0; i<folder.nChildren; i++)
      folder.children[i].display()
  }
  else
  {
    if (folder.nodeImg)
      if (folder.isLastNode)
        folder.nodeImg.src = menuImgPath + "ftv2plastnode.gif"
      else
	  folder.nodeImg.src = menuImgPath + "ftv2pnode.gif"
    folder.iconImg.src = folder.iconSrc
//	alert(folder.iconImg.src);////////////////////////////////////////////////////////////////
    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+")' onMouseOver='winStatus(\"\"); return true;' CLASS='menu'>"
  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='" + menuImgPath + "ftv2mlastnode.gif' height=22 border=0></a>")
      leftSide = leftSide + "<img src='" + menuImgPath + "ftv2blank.gif' height=22>"
      this.isLastNode = 1
    }
    else
    {
      this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='" + menuImgPath + "ftv2mnode.gif' height=22 border=0></a>")
      leftSide = leftSide + "<img src='" + menuImgPath + "ftv2vertline.gif' height=22>"
      this.isLastNode = 0
    }
  else
    this.renderOb("")

  if (nc > 0)
  {
//alert(this.nChildren); ///////////////////////////////////////////////////////////////////////////////////////////////////////
    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 ")
  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 CLASS='contentList'>")
  if (USETEXTLINKS)
  {
    this.outputLink()
    doc.write("&nbsp;" + this.desc + "</a>")
  }
  else
    doc.write("&nbsp;" + 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
  }
}

function outputFolderLink()
{
   //constant data  
  if (this.hreference)
  {

   //his link  target always is conent
    doc.write("<a href=#zz ondblclick='clickOnFolder("+this.id+");refreshClass(\"" + strRemoveHtml(this.desc) + "\",\"" + this.hreference + "\");'  onMouseOver='winStatus(\"" + strRemoveHtml(this.desc) + "\"); return true;' ")
    if (browserVersion > 0)
        doc.write("onClick='javascript:clickOnFolder("+this.id+")'")
    doc.write(" class='menu'>")
  }
  else

   {
   //doc.write("<a>");
  doc.write("<a  ondblclick='clickOnNode("+this.id+");refreshClass(\"" + strRemoveHtml(this.desc) + "\",\"" + this.hreference + "\");' onMouseOver='winStatus(\"展开或者收缩【" + strRemoveHtml(this.desc) + "】项 \"); return true;' class='menu'>" )
    }
}

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
  descTemp_arr = itemDescription.split("^");
  this.desc= descTemp_arr[0] ;//strRemoveHtml(descTemp_arr[0]);
  // Assign the default icon if none specified

  if( descTemp_arr[1] == null ) {
	this.iconSrc = menuImgPath + "ftv2OneItem.gif";
  } else {
    this.iconSrc = descTemp_arr[1];
  }

  //this.desc = itemDescription
  this.link = itemLink
  this.id = -1 //initialized in initalize()
  this.navObj = 0 //initialized in render()
  this.iconImg = 0 //initialized in render()
// alert('desc= '+this.desc);
  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) //the last 'brother' in the children array
    {
      this.renderOb(leftSide + "<img src='" + menuImgPath + "ftv2lastnode.gif' height=22>")
      leftSide = leftSide + "<img src='" + menuImgPath + "ftv2blank.gif' height=22>"
    }
    else
    {
      this.renderOb(leftSide + "<img src='" + menuImgPath + "ftv2node.gif' height=22>")
      leftSide = leftSide + "<img src='" + menuImgPath + "ftv2vertline.gif' 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=# ondblclick='refreshClass(\"" + this.desc + "\",\"" + this.link + "\")' onMouseOver='winStatus(\"" + strRemoveHtml(this.desc) + "\"); return true;' class='menu'>")

  doc.write("<img id='itemIcon"+this.id+"' ")
  doc.write("src='"+this.iconSrc+"' border=0>")
  doc.write("</a>")
  doc.write("</td><td valign=middle nowrap CLASS='contentList'>")
  if (USETEXTLINKS)
    doc.write("<a href=# ondblclick='refreshClass(\"" + this.desc + "\",\"" + this.link + "\")' onMouseOver='winStatus(\"" + strRemoveHtml(this.desc) + "\"); return true;' class='menu'>&nbsp;" + this.desc + "</a>")
  else
    doc.write("&nbsp;" + 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
  }
}

function refreshClass(className,classId)
{
      
     opener.document.forms[0].className.value = className ;

     opener.document.forms[0].classId.value = classId;

     window.close();
}
// 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)
{

  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) //open<->close
}

 // 用initializeTreeNode()替代。
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+">&nbsp;</layer>")

    // close the whole tree
    clickOnNode(0)
    // open the root folder
    clickOnNode(0)
  }
}
  // 用于替代initializeDocument()以支持多树结构
function initializeTreeNode(rootNode)
{

  if (doc.all)
    browserVersion = 1 //IE4
  else
    if (doc.layers)
      browserVersion = 2 //NS4
    else
      browserVersion = 0 //other

  rootNode.initialize(0, 1, "")
  rootNode.display()

  if (browserVersion > 0)
  {
    doc.write("<layer top="+indexOfEntries[nEntries-1].navObj.top+">&nbsp;</layer>")

    // close the whole tree
    clickOnNode(rootNode.id)
    // open the root folder
    clickOnNode(rootNode.id)
  }
}

// Auxiliary Functions for Folder-Treee backward compatibility
// *********************************************************

function gFld(description, hreference)
{
  folder = new Folder(description, hreference)
  return folder
}

function gLnk(target, description, linkData)
{
 // fullLink = linkData
//  if (target != "")
//  {
//    fullLink += " target='" + target + "'" ;
//  }
  linkItem = new Item(description, target)
  return linkItem
}

function insFld(parentFolder, childFolder)
{
  return parentFolder.addChild(childFolder)
}

function insDoc(parentFolder, document)
{
  parentFolder.addChild(document)
}

// Global variables
// ****************

USETEXTLINKS = 1
indexOfEntries = new Array
nEntries = 0
doc = document
browserVersion = 0
selectedFolder=0