Discuz.Forum/Navs.cs

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using System;
using System.Data;
using System.Text;

using Discuz.Entity;
using Discuz.Data;
using Discuz.Common;
using Discuz.Config;
using Discuz.Common.Generic;

namespace Discuz.Forum
{
    public class Navs
    {
        /// <summary>
        /// 主菜单变量
        /// </summary>
        private static DataTable mainNavigation;
        /// <summary>
        /// 全部子菜单变量
        /// </summary>
        private static DataTable subNavigation;
        /// <summary>
        /// 拥有子菜单的主菜单ID数组
        /// </summary>
        private static string[] mainNavigationHasSub;
        /// <summary>
        /// 加载导航数据列表
        /// </summary>
        private static List<NavInfo> navigationList = Discuz.Data.Navs.GetNavigation();

        private static Predicate<NavInfo> matchParent = new Predicate<NavInfo>(delegate(NavInfo navInfo) { return navInfo.Parentid == 0; });

        static Navs()
        {
            InitNavigation();
        }

        /// <summary>
        /// 得到自定义菜单信息
        /// </summary>
        /// <returns></returns>
        private static List<NavInfo> GetNavigation()
        {
            if (navigationList == null)
            {
                navigationList = Discuz.Data.Navs.GetNavigation();
            }
            return navigationList;
        }

        /// <summary>
        /// 返回主菜单缓存
        /// </summary>
        /// <returns></returns>
        public static DataTable GetMainNavigation()
        {
            if (mainNavigation == null)
            {
                mainNavigation = new DataTable();