//****************************************************************
// You are free to copy the "Folder-Tree" script as long as you
// keep this copyright notice:
// Script found in: http://www.geocities.com/Paris/LeftBank/2178/ 
// Author: Marcelino Alves Martins (martins@hks.com) December '97. 
//**************************************************************** 
 
//Log of changes: 
//       17 Feb 98 - Fix initialization flashing problem with Netscape
//       
//       27 Jan 98 - Root folder starts open; support for USETEXTLINKS; 
//                   make the ftien4 a js file 
//       
 
 
// Definition of class Folder 
// ***************************************************************** 
 
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 = "images/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 = "images/ftv2mlastnode.gif";
      else 
	  folder.nodeImg.src = "images/ftv2mnode.gif";
    folder.iconImg.src = "images/ftv2folderopen.gif";
    for (i=0; i<folder.nChildren; i++)
      folder.children[i].display();
  } 
  else 
  { 
    if (folder.nodeImg) 
      if (folder.isLastNode) 
        folder.nodeImg.src = "images/ftv2plastnode.gif";
      else 
	  folder.nodeImg.src = "images/ftv2pnode.gif";
    folder.iconImg.src = "images/ftv2folderclosed.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='images/ftv2mlastnode.gif'  border=0></a>");
      leftSide = leftSide + "<img src='images/ftv2blank.gif' >";
      this.isLastNode = 1;
    } 
    else 
    { 
      this.renderOb(leftSide + auxEv + "<img name='nodeIcon" + this.id + "' src='images/ftv2mnode.gif'  border=0></a>");
      leftSide = leftSide + "<img src='images/ftv2vertline.gif' >";
      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 ");
  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;
  } 
} 
 
function outputFolderLink() 
{ 
  if (this.hreference) 
  { 
    doc.write("<a href='" + this.hreference + "' TARGET=a_main ");
    if (browserVersion > 0) 
      doc.write("onClick='javascript:clickOnFolder("+this.id+")'");
    doc.write(">");
  } 
  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 = "images/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) 
{  
  this.createIndex();
 
  if (level>0) 
    if (lastNode) //the last 'brother' in the children array 
    { 
      this.renderOb(leftSide + "<img src='images/ftv2lastnode.gif' >");
      leftSide = leftSide + "<img src='images/ftv2blank.gif' >";
    } 
    else 
    { 
      this.renderOb(leftSide + "<img src='images/ftv2node.gif' >");
      leftSide = leftSide + "<img src='images/ftv2vertline.gif' >";
    } 
  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 + ">");
  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) 
{ 
  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  
} 
 
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);
  } 
} 
 
// Auxiliary Functions for Folder-Treee backward compatibility 
// ********************************************************* 
 
function gFld(description, hreference) 
{ 
  description="<font style=font-size:9pt; font-color: #00ff00;background-color:#ccff99>" + description;
  folder = new Folder(description, hreference);
  return folder;
} 
 
function gLnk(target, description, linkData) 
{ 
  description="<font style=font-size:9pt; font-color: #0000ff;background-color:#ccff99>" + description;
  fullLink = "";
 
  if (target==0) 
  { 
    fullLink = "'"+linkData+"' target=jsp_amain";
  }
  else if (target==1)
  {
    fullLink = "'"+linkData+"' target=jsp_main";
  }
  else if (target==2)
  {
    fullLink = "'"+linkData+"' target=_blank";
  }
  else if (target==3)
  {
    fullLink = "'"+linkData+"' target=_top";
  }
  else if (target==4)
  {
    fullLink = "'"+linkData+"' target=jsp_main";
  }
  else
  {
    fullLink = "'"+linkData+"' target=a_main";
  } 
 
  linkItem = new Item(description, fullLink); 
  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;