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

function getSizes() {
  var len = 0;
  for (var n=0; n<d.aNodes.length; n++) {
    var c = document.getElementById("bd" + n);
    if(c.checked)
      len += d.aNodes[n].size;
  }
  return len;
}

function drawSel() {

  $rsize = "";
    if (sel > (1024 * 1024 * 1024))
      {
        rsize = Math.round((sel / (1024 * 1024 * 1024))*100)/100 + " GB";
      }
    else if (sel < 1024 * 1024)
      {
        rsize = Math.round((sel / 1024)*10)/10 + " KB";
      }
    else
      {
        rsize = Math.round((sel / (1024 * 1024))*10)/10 + " MB";
      }

  document.getElementById("sel").innerHTML = String(sel) + " (" + rsize +")";

}

function chg(node,status,recursion) {

  var n=0;

  if (typeof status == 'undefined') {
    while(d.aNodes[n].id != node && n<d.aNodes.length) n++;
    c = document.getElementById("bd" + n);
    status = c.checked;
    c.checked == true ? sel+=d.aNodes[n].size : sel-=d.aNodes[n].size;
  }

  for (n=0; n<d.aNodes.length; n++) {
                if (d.aNodes[n].pid == node) {
          c = document.getElementById("bd" + n);
          if(status != c.checked) status == true ? sel+=d.aNodes[n].size : sel-=d.aNodes[n].size;
          c.checked = status;
                  chg(d.aNodes[n].id,status,true);
                }
        }

  if (typeof recursion == 'undefined')
    drawSel();

}


// Node object
function Node(id, pid, name, url, title, target, icon, iconOpen, open, prio, size) {
        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.prio = prio || -1;
    this.size = size || 0;
        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          : 'images/dtree/base.gif',
                folder        : 'images/dtree/folder.gif',
                folderOpen    : 'images/dtree/folderopen.gif',
                node          : 'images/dtree/page.gif',
                empty         : 'images/dtree/empty.gif',
                line          : 'images/dtree/line.gif',
                join          : 'images/dtree/join.gif',
                joinBottom    : 'images/dtree/joinbottom.gif',
                plus          : 'images/dtree/plus.gif',
                plusBottom    : 'images/dtree/plusbottom.gif',
                minus         : 'images/dtree/minus.gif',
                minusBottom   : 'images/dtree/minusbottom.gif',
                nlPlus        : 'images/dtree/nolines_plus.gif',
                nlMinus       : 'images/dtree/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, prio, size, url, title, target, icon, iconOpen, open) {
        this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open, prio, size);
};

// 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="" />';
        }
// dirty hack by alatar :)
    str += '<input type="checkbox" id="b' + this.obj + nodeId + '" name="files[]" onClick=" chg(' +  node.id + '); return true;" value="' + node.id + '"'+((node.prio==1)?" checked":"")+' />';
// alatar end
        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;
        }
};