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

| dTree 2.05 | Copyright (c) 2002-2003 Geir Landrö |

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



// 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                                        : '_self',



                folderLinks                        : true,



                useSelection                : true,



                useCookies                        : true,



                useLines                                : true,



                useIcons                                : true,



                useStatusText                : false,



                closeSameLevel        : false,



                inOrder                                        : true



        }



        this.icon = {



                //root                                : 'javascript/cat_tree/img/base.gif',

                root                                : 'javascript/cat_tree/img/spacer.gif',



                folder                        : 'javascript/cat_tree/img/folder.gif',



                folderOpen        : 'javascript/cat_tree/img/folderopen.gif',



                //node                                : 'javascript/cat_tree/img/page.gif',

                node                                : 'javascript/cat_tree/img/spacer.gif',



                empty                                : 'javascript/cat_tree/img/empty.gif',



                line                                : 'javascript/cat_tree/img/line.gif',



                join                                : 'javascript/cat_tree/img/join.gif',



                joinBottom        : 'javascript/cat_tree/img/joinbottom.gif',



                plus                                : 'javascript/cat_tree/img/plus.gif',



                plusBottom        : 'javascript/cat_tree/img/plusbottom.gif',



                minus                                : 'javascript/cat_tree/img/minus.gif',



                minusBottom        : 'javascript/cat_tree/img/minusbottom.gif',



                nlPlus                        : 'javascript/cat_tree/img/nolines_plus.gif',



                nlMinus                        : 'javascript/cat_tree/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 = '<div class="dtree">\n';



        if (document.getElementById) {



                if (this.config.useCookies) this.selectedNode = this.getSelected();



                str += this.addNode(this.root);



        } else str += 'Browser not supported.';



        str += '</div>';



        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 = '<div class="dTreeNode">' + 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 += '</div>';



        if (node._hc) {



                str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';



                str += this.addNode(node);



                str += '</div>';



        }



        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;



        }



};