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adding mktree back! (not sure when it was removed!)
git-svn-id: http://www.observium.org/svn/observer/trunk@392 61d68cd4-352d-0410-923a-c4978735b2b8
This commit is contained in:
Adam Amstrong
177
html/js/mktree.js
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177
html/js/mktree.js
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// ===================================================================
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// Author: Matt Kruse <matt@mattkruse.com>
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// WWW: http://www.mattkruse.com/
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//
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// NOTICE: You may use this code for any purpose, commercial or
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// private, without any further permission from the author. You may
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// remove this notice from your final code if you wish, however it is
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// appreciated by the author if at least my web site address is kept.
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//
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// You may *NOT* re-distribute this code in any way except through its
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// use. That means, you can include it in your product, or your web
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// site, or any other form where the code is actually being used. You
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// may not put the plain javascript up on your site for download or
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// include it in your javascript libraries for download.
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// If you wish to share this code with others, please just point them
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// to the URL instead.
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// Please DO NOT link directly to my .js files from your site. Copy
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// the files to your server and use them there. Thank you.
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// ===================================================================
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// HISTORY
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// ------------------------------------------------------------------
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// December 9, 2003: Added script to the Javascript Toolbox
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// December 10, 2003: Added the preProcessTrees variable to allow user
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// to turn off automatic conversion of UL's onLoad
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// March 1, 2004: Changed it so if a <li> has a class already attached
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// to it, that class won't be erased when initialized. This allows
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// you to set the state of the tree when painting the page simply
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// by setting some <li>'s class name as being "liOpen" (see example)
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/*
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This code is inspired by and extended from Stuart Langridge's aqlist code:
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http://www.kryogenix.org/code/browser/aqlists/
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Stuart Langridge, November 2002
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sil@kryogenix.org
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Inspired by Aaron's labels.js (http://youngpup.net/demos/labels/)
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and Dave Lindquist's menuDropDown.js (http://www.gazingus.org/dhtml/?id=109)
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*/
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// Automatically attach a listener to the window onload, to convert the trees
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addEvent(window,"load",convertTrees);
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// Utility function to add an event listener
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function addEvent(o,e,f){
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if (o.addEventListener){ o.addEventListener(e,f,true); return true; }
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else if (o.attachEvent){ return o.attachEvent("on"+e,f); }
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else { return false; }
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}
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// utility function to set a global variable if it is not already set
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function setDefault(name,val) {
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if (typeof(window[name])=="undefined" || window[name]==null) {
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window[name]=val;
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}
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}
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// Full expands a tree with a given ID
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function expandTree(treeId) {
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var ul = document.getElementById(treeId);
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if (ul == null) { return false; }
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expandCollapseList(ul,nodeOpenClass);
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}
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// Fully collapses a tree with a given ID
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function collapseTree(treeId) {
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var ul = document.getElementById(treeId);
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if (ul == null) { return false; }
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expandCollapseList(ul,nodeClosedClass);
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}
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// Expands enough nodes to expose an LI with a given ID
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function expandToItem(treeId,itemId) {
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var ul = document.getElementById(treeId);
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if (ul == null) { return false; }
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var ret = expandCollapseList(ul,nodeOpenClass,itemId);
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if (ret) {
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var o = document.getElementById(itemId);
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if (o.scrollIntoView) {
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o.scrollIntoView(false);
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}
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}
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}
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// Performs 3 functions:
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// a) Expand all nodes
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// b) Collapse all nodes
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// c) Expand all nodes to reach a certain ID
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function expandCollapseList(ul,cName,itemId) {
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if (!ul.childNodes || ul.childNodes.length==0) { return false; }
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// Iterate LIs
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for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
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var item = ul.childNodes[itemi];
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if (itemId!=null && item.id==itemId) { return true; }
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if (item.nodeName == "LI") {
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// Iterate things in this LI
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var subLists = false;
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for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
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var sitem = item.childNodes[sitemi];
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if (sitem.nodeName=="UL") {
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subLists = true;
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var ret = expandCollapseList(sitem,cName,itemId);
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if (itemId!=null && ret) {
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item.className=cName;
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return true;
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}
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}
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}
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if (subLists && itemId==null) {
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item.className = cName;
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}
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}
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}
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}
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// Search the document for UL elements with the correct CLASS name, then process them
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function convertTrees() {
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setDefault("treeClass","mktree");
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setDefault("nodeClosedClass","liClosed");
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setDefault("nodeOpenClass","liOpen");
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setDefault("nodeBulletClass","liBullet");
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setDefault("nodeLinkClass","bullet");
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setDefault("preProcessTrees",true);
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if (preProcessTrees) {
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if (!document.createElement) { return; } // Without createElement, we can't do anything
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uls = document.getElementsByTagName("ul");
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for (var uli=0;uli<uls.length;uli++) {
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var ul=uls[uli];
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if (ul.nodeName=="UL" && ul.className==treeClass) {
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processList(ul);
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}
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}
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}
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}
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// Process a UL tag and all its children, to convert to a tree
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function processList(ul) {
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if (!ul.childNodes || ul.childNodes.length==0) { return; }
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// Iterate LIs
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for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
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var item = ul.childNodes[itemi];
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if (item.nodeName == "LI") {
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// Iterate things in this LI
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var subLists = false;
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for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
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var sitem = item.childNodes[sitemi];
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if (sitem.nodeName=="UL") {
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subLists = true;
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processList(sitem);
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}
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}
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var s= document.createElement("SPAN");
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var t= '\u00A0'; //
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s.className = nodeLinkClass;
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if (subLists) {
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// This LI has UL's in it, so it's a +/- node
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if (item.className==null || item.className=="") {
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item.className = nodeClosedClass;
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}
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// If it's just text, make the text work as the link also
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if (item.firstChild.nodeName=="#text") {
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t = t+item.firstChild.nodeValue;
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item.removeChild(item.firstChild);
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}
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s.onclick = function () {
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this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;
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return false;
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}
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}
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else {
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// No sublists, so it's just a bullet node
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item.className = nodeBulletClass;
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s.onclick = function () { return false; }
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}
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s.appendChild(document.createTextNode(t));
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item.insertBefore(s,item.firstChild);
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}
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}
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}
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