dTree/dtree.js/2.05W1

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About

This version allows images to be in a different default folder without having to specify them individually by setting config.fpImgBase. There is further tidying that could be done.

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 | HISTORY: 

 2011-01-12 added config.fpImgBase, Icon() - to allow icons to be kept in different folder by default

|--------------------------------------------------*/

// 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, fpImgBase : 'img/' }

this.icon = { root : 'base.gif', folder : 'folder.gif', folderOpen : 'folderopen.gif', node : 'page.gif', empty : 'empty.gif', line : 'line.gif', join : 'join.gif', joinBottom : 'joinbottom.gif', plus : 'plus.gif', plusBottom : 'plusbottom.gif', minus : 'minus.gif', minusBottom : 'minusbottom.gif', nlPlus : 'nolines_plus.gif', nlMinus : 'nolines_minus.gif' }; this.obj = objName; this.aNodes = []; this.aIndent = []; this.root = new Node(-1); this.selectedNode = null; this.selectedFound = false; this.completed = false;

this.Icon = function(type) { return this.config.fpImgBase + this.icon[type]; } };

// 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 = '

\n';

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 = '

' + this.indent(node, nodeId);

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>

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