ftiens4.js

用JAVA实现的MIB浏览器

  this.level = 0
  this.isLastNode = false
  this.leftSideCoded = ""
  this.parentObj = null

  this.maySelect=true

  this.initialize = initializeItem;
  this.createIndex = createEntryIndex;
  this.forceOpeningOfAncestorFolders = forceOpeningOfAncestorFolders;

  finalizeCreationOfItem(this)
} 

//Assignments that can be delayed when the item is created with folder.addChildren
//The assignments that cannot be delayed are done in addChildren and in initializeFolder
//Additionaly, some assignments are also done in finalizeCreationOfChildDocs itself
function finalizeCreationOfItem(itemArray)
{
  itemArray.navObj = 0 //initialized in render() 
  itemArray.iconImg = 0 //initialized in render() 
  itemArray.iconSrc = ICONPATH + "ftv2doc.gif" 
  itemArray.isRendered = 0
  itemArray.nChildren = 0
  itemArray.prependHTML = ""
 
  // methods 
  itemArray.escondeBlock = escondeBlock
  itemArray.esconde = escondeBlock
  itemArray.folderMstr = folderMstr 
  itemArray.renderOb = drawItem 
  itemArray.totalHeight = totalHeight 
  itemArray.blockStartHTML = blockStartHTML
  itemArray.blockEndHTML = blockEndHTML
  itemArray.getID = getID
}

function initializeItem(level, lastNode, leftSide) 
{  
  this.createIndex() 
  this.level = level
  this.leftSideCoded = leftSide
  this.isLastNode = lastNode
} 
 
function drawItem(insertAtObj) 
{ 
  var leftSide = leftSideHTML(this.leftSideCoded)
  var docW = ""

  var fullLink = "href=\""+this.link+"\" target=\""+this.target+"\" onClick=\"clickOnLink('"+this.getID()+"\', '"+this.link+"','"+this.target+"');return false;\"";
  this.isRendered = 1

  if (this.level>0) 
    if (this.isLastNode) //the last 'brother' in the children array 
    { 
      leftSide = leftSide + "<td valign=top><img src='" + ICONPATH + "ftv2lastnode.gif' width=16 height=22></td>"
    } 
    else 
    { 
      leftSide = leftSide + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif><img src='" + ICONPATH + "ftv2node.gif' width=16 height=22></td>"
    } 

  docW = docW + this.blockStartHTML("item")

  docW = docW + "<tr>" + leftSide + "<td valign=top>"
  if (USEICONS)
      docW = docW + "<a " + fullLink  + " id=\"itemIconLink"+this.id+"\">" + "<img id='itemIcon"+this.id+"' " + "src='"+this.iconSrc+"' border=0>" + "</a>"
  else
	  if (this.prependHTML == "")
        docW = docW + "<img src=" + ICONPATH + "ftv2blank.gif height=2 width=3>"

  if (WRAPTEXT)
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle width=100%>"
  else
    docW = docW + "</td>"+this.prependHTML+"<td valign=middle nowrap width=100%>"

  if (USETEXTLINKS) 
    docW = docW + "<a " + fullLink + " id=\"itemTextLink"+this.id+"\">" + this.desc + "</a>"
  else 
    docW = docW + this.desc

  docW = docW + "</td>"

  docW = docW + this.blockEndHTML()
 
  if (insertAtObj == null)
  {
	  doc.write(docW)
  }
  else
  {
      insertAtObj.insertAdjacentHTML("afterEnd", docW)
  }

  if (browserVersion == 2) { 
    this.navObj = doc.layers["item"+this.id] 
    if (USEICONS)
      this.iconImg = this.navObj.document.images["itemIcon"+this.id] 
    doc.yPos=doc.yPos+this.navObj.clip.height 
  } else if (browserVersion != 0) { 
    this.navObj = getElById("item"+this.id)
    if (USEICONS)
      this.iconImg = getElById("itemIcon"+this.id)
  } 
} 
 
 
// Methods common to both objects (pseudo-inheritance) 
// ******************************************************** 
 
function forceOpeningOfAncestorFolders() {
  if (this.parentObj == null || this.parentObj.isOpen)
    return
  else {
    this.parentObj.forceOpeningOfAncestorFolders()
    clickOnNodeObj(this.parentObj)
  }
}

function escondeBlock() 
{ 
  if (browserVersion == 1 || browserVersion == 3) { 
    if (this.navObj.style.display == "none") 
      return 
    this.navObj.style.display = "none" 
  } else { 
    if (this.navObj.visibility == "hidden") 
      return 
    this.navObj.visibility = "hidden" 
  }     
} 
 
function folderMstr(domObj) 
{ 
  if (browserVersion == 1 || browserVersion == 3) { 
    if (t==-1)
      return
    var str = new String(doc.links[t])
    if (str.slice(14,16) != "em")
      return
  }

  if (!this.isRendered)
     this.renderOb(domObj)
  else
    if (browserVersion == 1 || browserVersion == 3) 
      this.navObj.style.display = "block" 
    else 
      this.navObj.visibility = "show" 
} 

function blockStartHTML(idprefix) {
  var idParam = "id='" + idprefix + this.id + "'"
  var docW = ""

  if (browserVersion == 2) 
    docW = "<layer "+ idParam + " top=" + doc.yPos + " visibility=show>"
  else if (browserVersion != 0)
    docW = "<div " + idParam + " style='display:block;'>"
     
  docW = docW + "<table border=0 cellspacing=0 cellpadding=0 width=100% >"

  return docW
}

function blockEndHTML() {
  var docW = ""

  docW = "</table>"
   
  if (browserVersion == 2) 
    docW = docW + "</layer>"
  else if (browserVersion != 0)
    docW = docW + "</div>"

  return docW
}
 
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 
} 


function leftSideHTML(leftSideCoded) {
	var i;
	var retStr = "";

	for (i=0; i<leftSideCoded.length; i++)
	{
		if (leftSideCoded.charAt(i) == "1")
		{
			retStr = retStr + "<td valign=top background=" + ICONPATH + "ftv2vertline.gif><img src='" + ICONPATH + "ftv2vertline.gif' width=16 height=22></td>"
		}
		if (leftSideCoded.charAt(i) == "0")
		{
			retStr = retStr + "<td valign=top><img src='" + ICONPATH + "ftv2blank.gif' width=16 height=22></td>"
		}
	}
	return retStr
}

function getID()
{
  //define a .xID in all nodes (folders and items) if you want to PERVESTATE that
  //work when the tree changes. The value eXternal value must be unique for each
  //node and must node change when other nodes are added or removed
  //The value may be numeric or string, but cannot have the same char used in cookieCutter
  if (typeof this.xID != "undefined") 
    return this.xID
  else
    return this.id
}

 
// Events 
// ********************************************************* 
 
function clickOnFolder(folderId) 
{ 
  var clicked = findObj(folderId)

  if (typeof clicked=='undefined' || clicked==null)
  {
    alert("Treeview was not able to find the node object corresponding to ID=" + folderId + ". If the configuration file sets a.xID values, it must set them for ALL nodes, including the foldersTree root.")
    return;
  }

  if (!clicked.isOpen) {
    clickOnNodeObj(clicked) 
  }

  if (lastOpenedFolder != null && lastOpenedFolder != folderId)
    clickOnNode(lastOpenedFolder); //sets lastOpenedFolder to null

  if (clicked.nChildren==0) {
    lastOpenedFolder = folderId;
    clicked.isLastOpenedfolder = true
  }

  if (isLinked(clicked.hreference)) {
      highlightObjLink(clicked);
  }
} 
 
function clickOnNode(folderId) 
{ 
  fOb = findObj(folderId);
  if (typeof fOb=='undefined' || fOb==null)
  {
    alert("Treeview was not able to find the node object corresponding to ID=" + folderId + ". If the configuration file sets a.xID, it must set foldersTree.xID as well.")
    return;
  }

  clickOnNodeObj(fOb);
}

function clickOnNodeObj(folderObj) 
{ 
  var state = 0 
  var currentOpen
 
  state = folderObj.isOpen 
  folderObj.setState(!state) //open<->close  

  if (folderObj.id!=foldersTree.id && PRESERVESTATE)
  {
    currentOpen = GetCookie("clickedFolder")
    if (currentOpen == null)
      currentOpen = ""

    if (!folderObj.isOpen) //closing
    {
      currentOpen = currentOpen.replace(folderObj.getID()+cookieCutter, "")
      SetCookie("clickedFolder", currentOpen)
    }
    else
      SetCookie("clickedFolder", currentOpen+folderObj.getID()+cookieCutter)
  }
}

function clickOnLink(clickedId, target, windowName) {
    highlightObjLink(findObj(clickedId));
    if (isLinked(target)) {
        window.open(target,windowName);
    }
}

function ld  ()
{
	return document.links.length-1
}
 

// Auxiliary Functions 
// *******************

function finalizeCreationOfChildDocs(folderObj) {
  for(i=0; i < folderObj.nChildren; i++)  {
    child = folderObj.children[i]
    if (typeof child[0] != 'undefined')
    {
      // Amazingly, arrays can have members, so   a = ["a", "b"]; a.desc="asdas"   works
      // If a doc was inserted as an array, we can transform it into an itemObj by adding 
      // the missing members and functions
      child.desc = child[0] 
      setItemLink(child, GLOBALTARGET, child[1])   
      finalizeCreationOfItem(child)
    }
  }
}

function findObj(id)
{
  var i=0;
  var nodeObj;

  if (typeof foldersTree.xID != "undefined") {
    nodeObj = indexOfEntries[i];
    for(i=0;i<nEntries&&indexOfEntries[i].xID!=id;i++) //may need optimization
      ;
    id = i
  }
  if (id >= nEntries)
    return null; //example: node removed in DB
  else
    return indexOfEntries[id];
}

function isLinked(hrefText) {
    var result = true;
    result = (result && hrefText !=null);
    result = (result && hrefText != '');
    result = (result && hrefText.indexOf('undefined') < 0);
    result = (result && hrefText.indexOf('parent.op') < 0);
    return result;
}

// Do highlighting by changing background and foreg. colors of folder or doc text
function highlightObjLink(nodeObj) {
  if (!HIGHLIGHT || nodeObj==null || nodeObj.maySelect==false) {//node deleted in DB 
    return;
  }

  if (browserVersion == 1 || browserVersion == 3) {
    var clickedDOMObj = getElById('itemTextLink'+nodeObj.id);
    if (clickedDOMObj != null) {
        if (lastClicked != null) {
            var prevClickedDOMObj = getElById('itemTextLink'+lastClicked.id);
            prevClickedDOMObj.style.color=lastClickedColor;
            prevClickedDOMObj.style.backgroundColor=lastClickedBgColor;
        }
        
        lastClickedColor    = clickedDOMObj.style.color;
        lastClickedBgColor  = clickedDOMObj.style.backgroundColor;
        clickedDOMObj.style.color=HIGHLIGHT_COLOR;
        clickedDOMObj.style.backgroundColor=HIGHLIGHT_BG;
    }
  }
  lastClicked = nodeObj;
  if (PRESERVESTATE)
    SetCookie('highlightedTreeviewLink', nodeObj.getID());
}

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

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