attributelist.cs

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using System;
using System.Collections;

namespace spider
{
	/// <summary>
	/// Attributelist 的摘要说明。
	/// </summary>

			public class AttributeList:Attribute
	 {

		
		 protected ArrayList m_list;

		
		 public override Object Clone()
		 {
			 AttributeList rtn = new AttributeList();			

			 for ( int i=0;i<m_list.Count;i++ )
				 rtn.Add( (Attribute)this[i].Clone() );

			 return rtn;
		 }

		
		 public AttributeList():base("","")
		 {
			 m_list = new ArrayList();
		 }


		
		 public void Add(Attribute a)
		 {
			 m_list.Add(a);
		 }


		 
		 public void Clear()
		 {
			 m_list.Clear();
		 }

		
		 public bool IsEmpty()
		 {
			 return( m_list.Count<=0);
		 }

		
		 public void Set(string name,string value)
		 {
			 if ( name==null )
				 return;
			 if ( value==null )
				 value="";

			 Attribute a = this[name];

			 if ( a==null ) 
			 {
				 a = new Attribute(name,value);
				 Add(a);
			 } 
			 else
				 a.Value = value;
		 }

		
		 public int Count
		 {
			 get 
			 {
				 return m_list.Count;
			 }
		 }

		
		 public ArrayList List
		 {
			 get 
			 {
				 return m_list;
			 }
		 }

		
		 public Attribute this[int index]
		 {
			 get 
			 {
				 if ( index<m_list.Count )
					 return(Attribute)m_list[index];
				 else
					 return null;
			 }
		 }

		 
		 public Attribute this[string index]
		 {
			 get 
			 {
				 int i=0;

				 while ( this[i]!=null ) 
				 {
					 if ( this[i].Name.ToLower().Equals( (index.ToLower()) ))
						 return this[i];
					 i++;
				 }

				 return null;

			 }
		 }




	 }
	}