JW/Framework/Bowin.Web.Controls.Mvc/Component.Tree/Tree.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Mvc;

namespace Bowin.Web.Controls.Mvc
{
    public class Tree : BaseControl
    {
        public string ItemSourceUrl { get; set; }
        public bool? IsCheckTree { get; set; }
        public UrlHelper UrlHelper { get; set; }
        public bool? IsCascadeCheck { get; set; }

        public override string Render()
        {
            StringBuilder sb = new StringBuilder();
            TagBuilder tabBuilder = new TagBuilder("ul");
            tabBuilder.MergeAttributes<string, string>(GetPropertyList());
            if (this.Attributes != null)
            {
                tabBuilder.MergeAttributes<string, string>(this.Attributes);
            }

            sb.Append(string.Format("<input type=hidden id={0} name={1}>", ID + "_hidden", Name));
            sb.Append(tabBuilder.ToString(TagRenderMode.Normal));
            return sb.ToString();
        }

        protected IDictionary<string, string> GetPropertyList()
        {
            var dictPropertyList = new Dictionary<string, string>();

            if (!string.IsNullOrEmpty(this.ID))
            {
                dictPropertyList.Add("id", this.ID);
            }
            dictPropertyList.Add("class", string.Format("easyui-tree {0}", (string.IsNullOrEmpty(CssClass) ? "" : CssClass)));

            var dictOptions = new Dictionary<string, string>();

            if (!string.IsNullOrEmpty(this.ItemSourceUrl))
            {
                dictOptions.Add("url", "'" + UrlHelper.Content(ItemSourceUrl) + "'");
            }
            else
            {
                throw new Exception("请输入获取树节点的数据源Url。");
            }
            if (this.IsCheckTree.HasValue && this.IsCheckTree.Value)
            {
                dictOptions.Add("checkbox", "true");
            }
            if (this.IsCascadeCheck.HasValue)
            {
                dictOptions.Add("cascadeCheck", this.IsCascadeCheck == true ? "true" : "false");
            }
            if (!this.IsCascadeCheck.HasValue || !this.IsCascadeCheck.Value)
            {
                dictOptions.Add("onBeforeCheck", "CMSFunction.Tree.OnBeforeCheck");
            }

            dictPropertyList.Add("data-options", string.Join(",", dictOptions.Select(x => string.Format("{0}:{1}", x.Key, x.Value))));

            return dictPropertyList;
        }

        public static Tree CreateControl(HtmlHelper htmlHelper, TreeOptions treeOptions, IDictionary<string, string> attributes = null)
        {
            Tree tree = new Tree();

            if (attributes != null)
            {
                tree.Attributes = attributes;
            }
            treeOptions = treeOptions ?? new TreeOptions();

            //tree.CssClass = string.IsNullOrWhiteSpace(treeOptions.CssClass) ? "easyui-accordion" : treeOptions.CssClass;
            tree.CssClass = treeOptions.CssClass;
            tree.ID = treeOptions.ID;
            tree.Name = treeOptions.Name;
            //tree.IconCls = treeOptions.IconCls;
            //tree.DateItemCss = string.IsNullOrWhiteSpace(treeOptions.DateItemCss) ? "easyui-tree" : treeOptions.DateItemCss;
            tree.ItemSourceUrl = treeOptions.ItemSourceUrl;
            tree.IsCheckTree = treeOptions.IsCheckTree;
            tree.IsCascadeCheck = treeOptions.IsCascadeCheck;
            tree.UrlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);

            return tree;
        }
    }

    public class TreeItem
    {
        public string id { get; set; }
        public string text { get; set; }
        public string iconCls { get; set; }
        public bool @checked { get; set; }
        public object attributes { get; set; }
        public List<TreeItem> children { get; set; }
    }
}