dTree/dtree.js/2.05
About
This is the original 2003 version from the dtree site. It doesn't seem to have any option to prepend a path to the images, so either they all have to be in an /img subfolder of the calling HTML page's folder or else you have to fully specify every icon image.
The formatting has been slightly tidied for this venue but the code is unaltered.
Code
<javascript> /*--------------------------------------------------| | dTree 2.05 | www.destroydrop.com/javascript/tree/ | |---------------------------------------------------| | Copyright (c) 2002-2003 Geir Landrö | | | | This script can be used freely as long as all | | copyright messages are intact. | | | | Updated: 17.04.2003 | |--------------------------------------------------*/
// Node object
function Node(id, pid, name, url, title, target, icon, iconOpen, open) { this.id = id; this.pid = pid; this.name = name; this.url = url; this.title = title; this.target = target; this.icon = icon; this.iconOpen = iconOpen; this._io = open || false; this._is = false; this._ls = false; this._hc = false; this._ai = 0; this._p; };
// Tree object
function dTree(objName) { this.config = { target : null, folderLinks : true, useSelection : true, useCookies : true, useLines : true, useIcons : true, useStatusText : false, closeSameLevel : false, inOrder : false }
this.icon = { root : 'img/base.gif', folder : 'img/folder.gif', folderOpen : 'img/folderopen.gif', node : 'img/page.gif', empty : 'img/empty.gif', line : 'img/line.gif', join : 'img/join.gif', joinBottom : 'img/joinbottom.gif', plus : 'img/plus.gif', plusBottom : 'img/plusbottom.gif', minus : 'img/minus.gif', minusBottom : 'img/minusbottom.gif', nlPlus : 'img/nolines_plus.gif', nlMinus : 'img/nolines_minus.gif' }; this.obj = objName; this.aNodes = []; this.aIndent = []; this.root = new Node(-1); this.selectedNode = null; this.selectedFound = false; this.completed = false; };
// Adds a new node to the node array
dTree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open) { this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open); };
// Open/close all nodes
dTree.prototype.openAll = function() { this.oAll(true); };
dTree.prototype.closeAll = function() { this.oAll(false); };
// Outputs the tree to the page
dTree.prototype.toString = function() {
var str = '
if (document.getElementById) { if (this.config.useCookies) this.selectedNode = this.getSelected(); str += this.addNode(this.root); } else str += 'Browser not supported.';
str += '';
if (!this.selectedFound) this.selectedNode = null; this.completed = true; return str; };
// Creates the tree structure
dTree.prototype.addNode = function(pNode) { var str = ; var n=0; if (this.config.inOrder) n = pNode._ai; for (n; n<this.aNodes.length; n++) { if (this.aNodes[n].pid == pNode.id) { var cn = this.aNodes[n]; cn._p = pNode; cn._ai = n; this.setCS(cn); if (!cn.target && this.config.target) cn.target = this.config.target; if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id); if (!this.config.folderLinks && cn._hc) cn.url = null; if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) { cn._is = true; this.selectedNode = n; this.selectedFound = true; } str += this.node(cn, n); if (cn._ls) break; } } return str; };
// Creates the node icon, url and text
dTree.prototype.node = function(node, nodeId) {
var str = '
if (this.config.useIcons) { if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node); if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node; if (this.root.id == node.pid) { node.icon = this.icon.root; node.iconOpen = this.icon.root; } str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />'; } if (node.url) { str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + node.url + '"'; if (node.title) str += ' title="' + node.title + '"'; if (node.target) str += ' target="' + node.target + '"'; if (this.config.useStatusText) str += ' onmouseover="window.status=\ + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" '; if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc)) str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"'; str += '>'; } else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id) str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">'; str += node.name; if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
str += '';
if (node._hc) {
str += '
str += this.addNode(node);
str += '';
} this.aIndent.pop(); return str; };
// Adds the empty and line icons
dTree.prototype.indent = function(node, nodeId) { var str = ; if (this.root.id != node.pid) { for (var n=0; n<this.aIndent.length; n++) str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />'; (node._ls) ? this.aIndent.push(0) : this.aIndent.push(1); if (node._hc) { str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="'; if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus; else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) ); str += '" alt="" /></a>'; } else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />'; } return str; };
// Checks if a node has any children and if it is the last sibling
dTree.prototype.setCS = function(node) { var lastId; for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n].pid == node.id) node._hc = true; if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id; } if (lastId==node.id) node._ls = true; };
// Returns the selected node
dTree.prototype.getSelected = function() { var sn = this.getCookie('cs' + this.obj); return (sn) ? sn : null; };
// Highlights the selected node
dTree.prototype.s = function(id) { if (!this.config.useSelection) return; var cn = this.aNodes[id]; if (cn._hc && !this.config.folderLinks) return; if (this.selectedNode != id) { if (this.selectedNode || this.selectedNode==0) { eOld = document.getElementById("s" + this.obj + this.selectedNode); eOld.className = "node"; } eNew = document.getElementById("s" + this.obj + id); eNew.className = "nodeSel"; this.selectedNode = id; if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id); } };
// Toggle Open or close
dTree.prototype.o = function(id) { var cn = this.aNodes[id]; this.nodeStatus(!cn._io, id, cn._ls); cn._io = !cn._io; if (this.config.closeSameLevel) this.closeLevel(cn); if (this.config.useCookies) this.updateCookie(); };
// Open or close all nodes
dTree.prototype.oAll = function(status) { for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) { this.nodeStatus(status, n, this.aNodes[n]._ls) this.aNodes[n]._io = status; } } if (this.config.useCookies) this.updateCookie(); };
// Opens the tree to a specific node
dTree.prototype.openTo = function(nId, bSelect, bFirst) { if (!bFirst) { for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n].id == nId) { nId=n; break; } } } var cn=this.aNodes[nId]; if (cn.pid==this.root.id || !cn._p) return; cn._io = true; cn._is = bSelect; if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls); if (this.completed && bSelect) this.s(cn._ai); else if (bSelect) this._sn=cn._ai; this.openTo(cn._p._ai, false, true); };
// Closes all nodes on the same level as certain node
dTree.prototype.closeLevel = function(node) { for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) { this.nodeStatus(false, n, this.aNodes[n]._ls); this.aNodes[n]._io = false; this.closeAllChildren(this.aNodes[n]); } } }
// Closes all children of a node
dTree.prototype.closeAllChildren = function(node) { for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) { if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls); this.aNodes[n]._io = false; this.closeAllChildren(this.aNodes[n]); } } }
// Change the status of a node(open or closed)
dTree.prototype.nodeStatus = function(status, id, bottom) { eDiv = document.getElementById('d' + this.obj + id); eJoin = document.getElementById('j' + this.obj + id); if (this.config.useIcons) { eIcon = document.getElementById('i' + this.obj + id); eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon; } eJoin.src = (this.config.useLines)? ((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)): ((status)?this.icon.nlMinus:this.icon.nlPlus); eDiv.style.display = (status) ? 'block': 'none'; };
// [Cookie] Clears a cookie
dTree.prototype.clearCookie = function() { var now = new Date(); var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24); this.setCookie('co'+this.obj, 'cookieValue', yesterday); this.setCookie('cs'+this.obj, 'cookieValue', yesterday); };
// [Cookie] Sets value in a cookie
dTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) { document.cookie = escape(cookieName) + '=' + escape(cookieValue) + (expires ? '; expires=' + expires.toGMTString() : ) + (path ? '; path=' + path : ) + (domain ? '; domain=' + domain : ) + (secure ? '; secure' : ); };
// [Cookie] Gets a value from a cookie
dTree.prototype.getCookie = function(cookieName) { var cookieValue = ; var posName = document.cookie.indexOf(escape(cookieName) + '='); if (posName != -1) { var posValue = posName + (escape(cookieName) + '=').length; var endPos = document.cookie.indexOf(';', posValue); if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos)); else cookieValue = unescape(document.cookie.substring(posValue)); } return (cookieValue); };
// [Cookie] Returns ids of open nodes as a string
dTree.prototype.updateCookie = function() { var str = ; for (var n=0; n<this.aNodes.length; n++) { if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) { if (str) str += '.'; str += this.aNodes[n].id; } } this.setCookie('co' + this.obj, str); };
// [Cookie] Checks if a node id is in a cookie
dTree.prototype.isOpen = function(id) { var aOpen = this.getCookie('co' + this.obj).split('.'); for (var n=0; n<aOpen.length; n++) if (aOpen[n] == id) return true; return false; };
// If Push and pop is not implemented by the browser
if (!Array.prototype.push) { Array.prototype.push = function array_push() { for(var i=0;i<arguments.length;i++) this[this.length]=arguments[i]; return this.length; } };
if (!Array.prototype.pop) { Array.prototype.pop = function array_pop() { lastElement = this[this.length-1]; this.length = Math.max(this.length-1,0); return lastElement; } }; </javascript>