【XML】asp.net 用XML生成放便扩展的自定义树-自定义树

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asp.net 用XML生成放便扩展的自定义树

using System.Text;
using System.Collections;
using System.Xml;
using System.Web;
using System;
/// <summary>
/// CreateTree 的摘要说明
/// </summary>
public class MenuTree
{
int index=0;//菜单栏目ID索引
private ArrayList havePermission=new ArrayList();
private bool isVip=false;
/// <summary>
/// 登录用户所拥有的权限
/// </summary>
private ArrayList HavePermissions
{
get { return havePermission; }
set { havePermission=value; }
}
/// <summary>
/// 登录用户是否是VIP
/// </summary>
private bool IsVip
{
get { return isVip; }
set { isVip=value; }
}
/// <summary>
/// 登录用户所拥有的权限 是否为VIP用户
/// </summary>
/// <param name="havePermission"></param>
/// <param name="isVip"></param>
public MenuTree(ArrayList havePermission, bool isVip)
{
this.HavePermissions=havePermission;
this.IsVip=isVip;
}
/// <summary>
/// 绑定树
/// </summary>
public string BindDataToTree()
{
System.Xml.XmlDocument document=new System.Xml.XmlDataDocument();
document.Load(HttpContext.Current.Server.MapPath("MenuData.xml"));
return CreateTreeHtml(document.DocumentElement, 0);
}
/// <summary>
/// 创建栏目树
/// </summary>
/// <param name="document">xml节点</param>
/// <param name="deep">树深度</param>
private string CreateTreeHtml(System.Xml.XmlNode document, int deep)
{
string nodeType="Menu";//节点的类型，来生成子节点的CSS类型
StringBuilder treeHtml=new StringBuilder();
foreach (System.Xml.XmlNode node in document.ChildNodes)
{
string menuId=string.Empty;
string treeNodeHtml=string.Empty;
string nodeName=node.Name;
string showName=GetAttributesValue(node.Attributes["Name"]);//显示栏目名
string nodeId=GetAttributesValue(node.Attributes["Id"]);//栏目ID
bool isExpand=GetAttributesValue(node.Attributes["IsExpand"]).ToLower().Trim()=="true" ? true : false;//是否展开
string permissions=GetAttributesValue(node.Attributes["Permissions"]);//权限字串
bool isOnlyVip=GetAttributesValue(node.Attributes["IsOnlyVip"]).ToLower().Trim()=="true" ? true : false;//是否只允许VIP访问
bool isUnVip=GetAttributesValue(node.Attributes["IsUnVip"]).ToLower().Trim()=="true" ? true : false;//是否只准非VIP访问
string eventScript=GetAttributesValue(node.Attributes["EventScript"]);//事件脚本
int chlidNodesCount=node.ChildNodes.Count;//子节点数
bool isPermissions=GetIsPermissions(permissions);//是否有权限
if (!isPermissions)
{
continue; //如果没有权限，不生成此节点
}
if (nodeName=="Module")
{
if (isUnVip && IsVip)
{
continue;//如果为VIP会员 设为不允许访问子栏目
}
menuId=GetMenuId(nodeId);
treeHtml.AppendFormat("<div class='Module' id='Menu{0}' onclick='DoNodes(this);{1}' onselectstart='return false;'>", menuId, eventScript);
treeHtml.Append(" <img src='http://www.jb51.net/images/sideMenuIcon.gif' alt='' /> ");
treeHtml.AppendFormat("<span>{0}</span>", showName);
treeHtml.Append("</div>");
deep=0;
nodeType="Module";
}
else
{
treeHtml.Append("<table cellpadding='0' cellspacing='0' style='border-width: 0;width:90%'>");
treeHtml.Append("<tr class='NodeLine'>");
for (int i=0; i < deep; i++)
{
if (i==deep - 1)
{
treeHtml.Append("<td class='nodeIcoBox'>");
if (chlidNodesCount > 0)
{
menuId=GetMenuId(nodeId);
treeHtml.AppendFormat("<a id='Menu{0}' href='javascript:;' onclick='DoNodes(this,\"menu\")'><img src='http://www.jb51.net/Images/{1}.gif' alt=''/></a>", menuId, (isExpand ? "open-menu" : "close-menu"));
}
else
{
treeHtml.Append("<img src='http://www.jb51.net/Images/open-menuno.gif' alt=''/>");
}
treeHtml.Append("</td>");
}
else
{
treeHtml.Append("<td style='width: 20px;'> </td>");
}
}
string url=GetAttributesValue(node.Attributes["Url"]); //链接地址
string title=GetAttributesValue(node.Attributes["Title"]);//链接TITLE信息
string menuNodeId=nodeId.Trim().Length > 0 ? "id='MenuNode" + nodeId + "'" : string.Empty;//树节点ID
treeHtml.Append("<td style='white-space: nowrap;'>");
if (url.Length > 0 || chlidNodesCount==0)
{
if (!isOnlyVip || (isOnlyVip && IsVip))//栏目是否只为VIP开放
{
if (url.Length > 0)
{
treeHtml.AppendFormat("<a href='{0}' target='MainFrame' title='{1}' {3} {4}>{2}</a>", url, title, showName, eventScript, menuNodeId);
}
else
{
treeHtml.AppendFormat("<a href='javascript:;' target='MainFrame' title='{0}' {2} {3}>{1}</a>", title, showName, eventScript, menuNodeId);
}
}
else
{
treeHtml.AppendFormat("<a href='javascript:;' target='MainFrame' title='{1}' onclick='return AlertVip();' class='disableColor' {3}>{2}</a>", url, title, showName, menuNodeId);
}
}
else
{
treeHtml.AppendFormat("<a href='javascript:;' onclick='DoAClick(\"Menu{0}\");' title='{1}' {3} {4}>{2}</a>", menuId, title, showName, eventScript, menuNodeId);
}
treeHtml.Append("</td>");
treeHtml.Append("</tr>");
treeHtml.Append("</table>");
}
if (chlidNodesCount > 0)
{
treeNodeHtml=CreateTreeHtml(node, deep + 1);
}
if (treeNodeHtml.Length > 0)
{
treeHtml.AppendFormat("<div id='Menu{0}Nodes' {1} style='{2}'>", menuId, (nodeType=="Module" ? "class='Menus'" : "class='MenuNodes'"), (isExpand ? "display:block;" : "display: none;"));
treeHtml.Append(treeNodeHtml);
treeHtml.Append("</div>");
}
}
return treeHtml.ToString();
}
/// <summary>
/// 取得栏目的ID
/// </summary>
private string GetMenuId(string nodeId)
{
return nodeId.Length > 0 ? nodeId : Convert.ToString(++index);
}
/// <summary>
/// 取得节点值
/// </summary>
private string GetAttributesValue(XmlAttribute attributeValue)
{
return attributeValue==null ? "" : attributeValue.Value.Trim();
}
/// <summary>
/// 是否有权限
/// </summary>
private bool GetIsPermissions(string permissions)
{
if (HavePermissions.Count==0)
{
return false;
}
if (permissions.Length==0)
{
return true;
}
else
{
string[] arrPermissions=permissions.Split(',');
for (int i=0; i < arrPermissions.Length; i++)
{
if (HavePermissions.Contains(arrPermissions[i].Trim()))
{
return true;
}
}
return false;
}
}
}

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