Bruger:Wassini/mklist.js
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// <pre>
// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
// http://www.mattkruse.com/javascript/mktree/documentation.html
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download.
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================
// Automatically attach a listener to the window onload, to convert the trees
addEvent(window,"load",convertTrees);
// Utility function to add an event listener
function addEvent(o,e,f){
if (o.addEventListener){ o.addEventListener(e,f,true); return true; }
else if (o.attachEvent){ return o.attachEvent("on"+e,f); }
else { return false; }
}
// utility function to set a global variable if it is not already set
function setDefault(name,val) {
if (typeof(window[name])=="undefined" || window[name]==null) {
window[name]=val;
}
}
// Full expands a tree with a given ID
function expandTree(treeId) {
var ul = document.getElementById(treeId);
if (ul == null) { return false; }
expandCollapseList(ul,nodeOpenClass);
}
// Fully collapses a tree with a given ID
function collapseTree(treeId) {
var ul = document.getElementById(treeId);
if (ul == null) { return false; }
expandCollapseList(ul,nodeClosedClass);
}
// Expands enough nodes to expose an LI with a given ID
function expandToItem(treeId,itemId) {
var ul = document.getElementById(treeId);
if (ul == null) { return false; }
var ret = expandCollapseList(ul,nodeOpenClass,itemId);
if (ret) {
var o = document.getElementById(itemId);
if (o.scrollIntoView) {
o.scrollIntoView(false);
}
}
}
// Performs 3 functions:
// a) Expand all nodes
// b) Collapse all nodes
// c) Expand all nodes to reach a certain ID
function expandCollapseList(ul,cName,itemId) {
if (!ul.childNodes || ul.childNodes.length==0) { return false; }
// Iterate LIs
for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
var item = ul.childNodes[itemi];
if (itemId!=null && item.id==itemId)
{ return true; }
if (item.nodeName == "LI") {
// Iterate things in this LI
var subLists = false;
for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
var sitem = item.childNodes[sitemi];
if (sitem.nodeName=="UL") {
subLists = true;
var ret = expandCollapseList(sitem,cName,itemId);
if (itemId!=null && ret) {
item.className=cName;
return true;
}
}
}
if (subLists && itemId==null)
{
item.className = cName;
}
}
}
}
// Search the document for UL elements with the correct CLASS name, then process them
function convertTrees() {
setDefault("treeClass","mktree");
setDefault("nodeClosedClass","liClosed");
setDefault("nodeOpenClass","liOpen");
setDefault("nodeBulletClass","liBullet");
setDefault("nodeLinkClass","bullet");
setDefault("preProcessTrees",true);
if (preProcessTrees) {
if (!document.createElement) { return; } // Without createElement, we can't do anything
uls = document.getElementsByTagName("ul");
for (var uli=0;uli<uls.length;uli++) {
var ul=uls[uli];
if (ul.nodeName=="UL" && ul.className==treeClass) {
processList(ul);
}
}
}
}
// Process a UL tag and all its children, to convert to a tree
function processList(ul) {
if (!ul.childNodes || ul.childNodes.length==0) { return; }
// Iterate LIs
for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
var item = ul.childNodes[itemi];
if (item.nodeName == "LI") {
// Iterate things in this LI
var subLists = false;
for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
var sitem = item.childNodes[sitemi];
if (sitem.nodeName=="UL") {
subLists = true;
processList(sitem);
}
}
var s= document.createElement("SPAN");
var t= '\u00A0'; //
s.className = nodeLinkClass;
if (subLists) {
// This LI has UL's in it, so it's a +/- node
if (item.className==null || item.className=="") {
item.className = nodeClosedClass;
}
// If it's just text, make the text work as the link also
if (item.firstChild.nodeName=="#text") {
t = t+item.firstChild.nodeValue;
item.removeChild(item.firstChild);
}
s.onclick = function () {
this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;
return false;
}
}
else {
// No sublists, so it's just a bullet node
item.className = nodeBulletClass;
s.onclick = function () { return false; }
}
s.appendChild(document.createTextNode(t));
item.insertBefore(s,item.firstChild);
}
}
}
// </pre>