namevaluecollectionconverter.cs

来自「AJAX开发工具包」· CS 代码 · 共 122 行

using System;
using System.Text;
using System.Collections;
using System.Collections.Specialized;

namespace AjaxPro
{
	/// <summary>
	/// Provides methods to serialize and deserialize a NameValueCollection.
	/// </summary>
	public class NameValueCollectionConverter : IJavaScriptConverter
	{
		private string clientType = "Ajax.Web.NameValueCollection";

		public NameValueCollectionConverter() : base()
		{
		}

		public override string GetClientScript()
		{
			return @"addNamespace(""Ajax.Web"");

Ajax.Web.NameValueCollection = function()
{
	this.__type = ""System.Collections.Specialized.NameValueCollection"";

	this.add = function(key, value) {
		if(this[key] == null) {
			this[key] = value;
		}
	}
	
	this.getKeys = function() {
		var keys = [];
		
		for(key in this)
			if(typeof this[key] != ""function"")
				keys.push(key);
			
		return keys;
	}
	
	this.getValue = function(key) {
		return this[key];
	}
	
	this.toJSON = function() {
		var o = this;
		o.toJSON = null;
		delete o.toJSON;
		return AjaxPro.toJSON(o);
	}
}

";
		}

		public override object Deserialize(IJavaScriptObject o, Type t)
		{
			if(!typeof(NameValueCollection).IsAssignableFrom(t) || !(o is JavaScriptArray))
				throw new NotSupportedException();

			JavaScriptArray a = (JavaScriptArray)o;
			NameValueCollection list = (NameValueCollection)Activator.CreateInstance(t);

			foreach(JavaScriptObject item in a)
			{
				list.Add(item.Keys[0], item[item.Keys[0]].ToString());
			}

			return list;
		}

		public override string Serialize(object o)
		{
			if(!(o is NameValueCollection))
				throw new NotSupportedException();

			StringBuilder sb = new StringBuilder();
			NameValueCollection list = (NameValueCollection)o;
		
			bool b = true;

			sb.Append("new ");
			sb.Append(clientType);
			sb.Append("([");
			
			for(int i=0; i<list.Keys.Count; i++)
			{
				if(b){ b = false; }
				else{ sb.Append(","); }

				sb.Append('{');
				sb.Append(JavaScriptSerializer.Serialize(list.Keys[i]));
				sb.Append(':');
				sb.Append(JavaScriptSerializer.Serialize(list[list.Keys[i]]));
				sb.Append('}');
			}

			sb.Append("])");

			return sb.ToString();
		}

		public override Type[] SerializableTypes
		{
			get
			{
				return new Type[]{typeof(NameValueCollection)};
			}
		}

		public override Type[] DeserializableTypes
		{
			get
			{
				return new Type[]{typeof(NameValueCollection)};
			}
		}
	}
}