listbuilder.cs

x2webcontrols

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

namespace X2Design.Text
{
	/// <summary>
	/// 用于创建ul或者dl构成的列表
	/// </summary>
	public class ListBuilder
	{
		protected string type = "dl";
		protected StringBuilder sb = new StringBuilder();
		protected string template = string.Empty;
		protected System.Collections.Specialized.NameValueCollection nvc=new System.Collections.Specialized.NameValueCollection();
		
		/// <summary>
		/// 构造函数
		/// </summary>
		/// <param name="_type">列表类型，可选"ul","dl"，默认"ul"</param>
		/// <param name="className"></param>
		public ListBuilder(string _type,string className)
		{
			if(_type!=string.Empty)type = _type;
			if (className != string.Empty) className = " class='" + className+"'";
			sb.Append("<" + type + className + ">");
		}
		/// <summary>
		/// 以ul构造列表
		/// </summary>
		public ListBuilder()
		{
			sb.Append("<dl>");
		}
		/// <summary>
		/// 构造函数
		/// </summary>
		/// <param name="_type">列表类型，可选"ul","dl"，默认"ul"</param>
		public ListBuilder(string _type)
		{
			type = _type;
			sb.Append("<" + type + ">");
		}

		/// <summary>
		/// 设置模版
		/// </summary>
		/// <param name="_template">模版，以{#name}作为参数，name来自数据源datatable或者执行设置</param>
		public void SetTemplate(string _template)
		{
			template = _template;
		}

		/// <summary>
		/// 添加模版数据
		/// </summary>
		/// <param name="name">名称</param>
		/// <param name="value">值</param>
		public void AddTemplateData(string name,string value)
		{
			nvc.Add(name, value);
		}

		/// <summary>
		/// 模版数据添加完成后需调用此方法
		/// </summary>
		/// <param name="className">列表项（li或者dd）的css类名</param>
		public void EndTemplateData(string className)
		{
			string itemName = "dd";
			if (type != "dl")
			{
				itemName = "li";
			}
			if (className != string.Empty) className = " class='" + className + "'";
			sb.Append("<" + itemName + className + ">");
			sb.Append(GenerateString());
			sb.Append("</" + itemName + ">");
			nvc.Clear();
		}

		/// <summary>
		/// 模版数据添加完成后需调用此方法
		/// </summary>
		public void EndTemplateData()
		{
			EndTemplateData("");
		}

		/// <summary>
		/// 
		/// </summary>
		/// <param name="fileName"></param>
		protected string GenerateString()
		{
			Regex regex = new Regex(@"{#(\w+)}", RegexOptions.IgnoreCase);
			return regex.Replace(template, new MatchEvaluator(this.MatchEvaluator));
		}

		/// <summary>
		/// 正则匹配中的委托定义
		/// </summary>
		/// <param name="m"></param>
		/// <returns></returns>
		protected string MatchEvaluator(Match m)
		{
			string name = m.Groups[1].Captures[0].Value;
			return nvc[name];
		}

		/// <summary>
		/// 设置标题
		/// </summary>
		/// <param name="text">文本</param>
		/// <param name="url">链接</param>
		/// <param name="target">目标窗口，可选"_blank","_self"等，默认"_self"</param>
		public void SetTitle(string text, string url, string target)
		{
			this.SetTitle(text, url, target, "");
		}
		/// <summary>
		/// 设置标题
		/// </summary>
		/// <param name="text">文本</param>
		/// <param name="url">链接</param>
		public void SetTitle(string text, string url)
		{
			this.SetTitle(text, url, "", "");
		}
		/// <summary>
		/// 设置纯文本标题
		/// </summary>
		/// <param name="text">文本</param>
		public void SetTitle(string text)
		{
			this.SetTitle(text, "", "", "");
		}
		/// <summary>
		/// 设置标题
		/// </summary>
		/// <param name="text">文本</param>
		/// <param name="url">链接</param>
		/// <param name="target">目标窗口，可选"_blank","_self"等，默认"_self"</param>
		/// <param name="className">CSS类名</param>
		public void SetTitle(string text,string url,string target,string className)
		{


			string itemName = "dt";
			if (type != "dl")
			{
				itemName = "li";
				className += " title ";
			}
			if (className != string.Empty) className = " class='" + className + "'";
			sb.Append("<" + itemName + className + ">");
			if (url == string.Empty)
			{
				sb.Append(text);
			}
			else
			{
				if (target != string.Empty) target = " target='" + target + "'";
				sb.Append("<a href='" + url + "'" + target + ">");
				sb.Append(text);
				sb.Append("</a>");
			}
			sb.Append("</" + itemName + ">");
		}
		/// <summary>
		/// 添加一项
		/// </summary>
		/// <param name="text">文本</param>
		/// <param name="url">链接</param>
		/// <param name="target">目标窗口，可选"_blank","_self"等，默认"_self"</param>
		/// <param name="className">CSS类名</param>
		public void AddItem(string text, string url,string target,string className)
		{
			string itemName = "dd";
			if (type != "dl") itemName = "li";
			if (className != string.Empty) className = " class='" + className + "'";
			sb.Append("<" + itemName + className + ">");
			if (url == string.Empty)
			{
				sb.Append(text);
			}
			else
			{
				if (target != string.Empty) target = " target='"+target+"'";
				sb.Append("<a href='"+url+"'" + target + ">");
				sb.Append(text);
				sb.Append("</a>");
			}
			sb.Append("</" + itemName + ">");
		}
	
		/// <summary>
		/// 
		/// </summary>
		/// <param name="text"></param>
		/// <param name="url"></param>
		/// <param name="target"></param>
		public void AddItem(string text, string url,string target)
		{
			this.AddItem(text, url, target, "");
		}
		/// <summary>
		/// 
		/// </summary>
		/// <param name="text"></param>
		/// <param name="url"></param>
		public void AddItem(string text, string url)
		{
			this.AddItem(text, url, "", "");
		}
		/// <summary>
		/// 
		/// </summary>
		/// <param name="text"></param>
		public void AddItem(string text)
		{
			this.AddItem(text, "", "", "");
		}

		/// <summary>
		/// 返回列表的HTML
		/// </summary>
		/// <returns>列表的HTML</returns>
		public override string ToString()
		{
			sb.Append("</" + type + ">");
			return sb.ToString();
		}

		/// <summary>
		/// 根据模板绑定一个dataTable，使用datatable中的值来填充模板
		/// </summary>
		/// <param name="dataTable"></param>
		public void BindData(System.Data.DataTable dataTable)
		{
			foreach (System.Data.DataRow dr in dataTable.Rows)
			{
				foreach(DataColumn column in dataTable.Columns)
				{
					AddTemplateData(column.ColumnName,dr[column.ColumnName].ToString());
				}
				EndTemplateData();
			}
		}
	}
}