//
// System.Configuration.ConfigurationProperty.cs
//
// Authors:
//	Duncan Mak (duncan@ximian.com)
//  Lluis Sanchez Gual (lluis@novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//

#if NET_2_0 && XML_DEP
#if XML_DEP
using System;
using System.ComponentModel;

namespace System.Configuration
{
	public class ConfigurationProperty : ConfigurationElement
	{
		string name;
		Type type;
		object default_value;
		TypeConverter converter;
		ConfigurationValidationAttribute validation;
		ConfigurationPropertyFlags flags;
		
		public ConfigurationProperty (string name, Type type, object default_value)
			: this (name, type, default_value, ConfigurationPropertyFlags.None)
		{
		}

		public ConfigurationProperty (
					string name, Type type, object default_value,
					ConfigurationPropertyFlags flags)
			:this (name, type, default_value, TypeDescriptor.GetConverter (type), null, flags)
		{
		}
		
		public ConfigurationProperty (
					string name, Type type, object default_value,
					TypeConverter converter,
					ConfigurationValidationAttribute validation,
					ConfigurationPropertyFlags flags)
		{
			this.name = name;
			this.converter = converter;
			this.default_value = default_value;
			this.flags = flags;
			this.type = type;
			this.validation = validation;
		}

		public TypeConverter Converter {
			get { return converter; }
		}

		public object DefaultValue {                        
			get { return default_value; }
		}

		public bool IsKey {                        
			get { return (flags & ConfigurationPropertyFlags.IsKey) != 0; }
		}

		public bool IsRequired {
			get { return (flags & ConfigurationPropertyFlags.Required) != 0; }               
		}

		public string Name {
			get { return name; }
		}

		public Type Type {
			get { return type; }
		}

		public ConfigurationValidationAttribute ValidationAttribute {
			get { return validation; }
		}

		protected internal virtual object ConvertFromString (string value)
		{
			if (converter != null)
				return converter.ConvertFromInvariantString (value);
			else
				throw new NotImplementedException ();
		}

		protected internal virtual string ConvertToString (object value)
		{
			if (converter != null)
				return converter.ConvertToInvariantString (value);
			else
				throw new NotImplementedException ();
		}
		
		internal bool IsElement {
			get {
				return (typeof(ConfigurationElement).IsAssignableFrom (type));
			}
		}
	}
}
#endif
#endif