// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;

namespace ICSharpCode.Core
{
	public delegate void PropertyChangedEventHandler(object sender, PropertyChangedEventArgs e);
	
	public class PropertyChangedEventArgs : EventArgs
	{
		Properties properties;
		string      key;
		object      newValue;
		object      oldValue;
		
		/// <returns>
		/// returns the changed property object
		/// </returns>
		public Properties Properties {
			get {
				return properties;
			}
		}
		
		/// <returns>
		/// The key of the changed property
		/// </returns>
		public string Key {
			get {
				return key;
			}
		}
		
		/// <returns>
		/// The new value of the property
		/// </returns>
		public object NewValue {
			get {
				return newValue;
			}
		}
		
		/// <returns>
		/// The new value of the property
		/// </returns>
		public object OldValue {
			get {
				return oldValue;
			}
		}
		
		public PropertyChangedEventArgs(Properties properties, string key, object oldValue, object newValue)
		{
			this.properties = properties;
			this.key        = key;
			this.oldValue   = oldValue;
			this.newValue   = newValue;
		}
	}
}