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

| 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,fieldNameTxt) {

        this.config = {

                target                                        : null,

                folderLinks                        : true,

                useSelection                : true,

                useCookies                        : true,

                useLines                                : true,

                useIcons                                : true,

                useStatusText                : false,

                closeSameLevel        : false,

                inOrder                                        : false,
                
				nodeOnClick : false,
				
				fieldName : (fieldNameTxt ? fieldNameTxt : 'attach_files')

        }

        this.icon = {

                root                                : '/live/modules/calendar/icon.png',

                folder                        : '/live/images/filetype_icons/folder.png',

                folderOpen        : '/live/images/filetype_icons/folder_open.png',

                node                                : '/live/images/filetype_icons/text.png',

                empty                                : '/live_tpl/calendar/dtree/img/empty.gif',

                line                                : '/live_tpl/calendar/dtree/img/line.gif',

                join                                : '/live_tpl/calendar/dtree/img/join.gif',

                joinBottom        : '/live_tpl/calendar/dtree/img/joinbottom.gif',

                plus                                : '/live_tpl/calendar/dtree/img/plus.gif',

                plusBottom        : '/live_tpl/calendar/dtree/img/plusbottom.gif',

                minus                                : '/live_tpl/calendar/dtree/img/minus.gif',

                minusBottom        : '/live_tpl/calendar/dtree/img/minusbottom.gif',

                nlPlus                        : '/live_tpl/calendar/dtree/img/nolines_plus.gif',

                nlMinus                        : '/live_tpl/calendar/dtree/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;

                }

                //if(node._hc)
                str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" style="margin-right:4px;" />';

        }
        
        if(this.root.id != node.pid){
                str += '<label for="'+ this.obj + nodeId +'"';
                if(node._hc){
               		str += ' onclick="' + this.obj + '.checkAllChildren(' + nodeId + ',' + node.id + ',false);' + this.obj + '.o(' + nodeId + ');"';
                }
                // If "title" is set, use the title for the label, otherwise use the name; allows for different label/value
                str += '>'+ (node.title!=""?node.title:node.name) +'</label>';

                //add file to article: uses node.id for value, already existing files have a db id
                str += '<input type="checkbox" id="'+ this.obj + nodeId +'" name="'+this.config.fieldName+'" value="'+ node.id +'" class="crirHiddenJS"';

                if(this.config.nodeOnClick){
                	str += ' onclick="' + this.config.nodeOnClick + '()"';
                }
                if(node._io){
                        str += ' checked';
                }
                str += '>';
        }

        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">';

        if(node._hc && this.root.id == node.pid){
       		str += '<span class="rootLabel">'+node.name+'</span>';
        }

        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 + ');" style="outline:none;"><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]);

                }

        }

}

// Checks all children of a node

dTree.prototype.checkAllChildren = function(inputId,nodeId,secondLevel) {

		newValue = secondLevel ? document.getElementById(this.obj+inputId).checked : !document.getElementById(this.obj+inputId).checked;
		
        for (var n=0; n<this.aNodes.length; n++) {

                if (this.aNodes[n].pid == nodeId) {

                		cb = document.getElementById(this.obj+n);
                		cb.checked = newValue;
                		cb.previousSibling.className = newValue ? 'checkbox_checked' : 'checkbox_unchecked';
                		if(this.aNodes[n]._hc){
                			this.checkAllChildren(n,cb.value,true);
                			this.o(n,cb.value,true);
                		}

                }

        }

}

// 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;

        }

};