// ****************************************************************

// This is free software licensed under the NUnit license. You

// may obtain a copy of the license as well as information regarding

// copyright ownership at http://nunit.org.

// ****************************************************************



using System;

using System.IO;

using System.Collections;



namespace NUnit.Util

{

	/// <summary>

	/// Represents a list of assemblies. It stores paths 

	/// that are added and fires an event whenevever it

	/// changes. All paths must be added as absolute paths.

	/// </summary>

	public class AssemblyList : CollectionBase

	{

		#region Properties and Events

		public string this[int index]

		{

			get { return (string)List[index]; }

			set 

			{ 

				if ( !Path.IsPathRooted( value ) )

					throw new ArgumentException( "Assembly path must be absolute" );

				List[index] = value; 

			}

		}



		public event EventHandler Changed;

		#endregion



		#region Methods

		public string[] ToArray()

		{

			return (string[])InnerList.ToArray( typeof( string ) );

		}



		public void Add( string assemblyPath )

		{

			if ( !Path.IsPathRooted( assemblyPath ) )

				throw new ArgumentException( "Assembly path must be absolute" );

			List.Add( assemblyPath );

		}



		public void Remove( string assemblyPath )

		{

			for( int index = 0; index < this.Count; index++ )

			{

				if ( this[index] == assemblyPath )

					RemoveAt( index );

			}

		}



		protected override void OnRemoveComplete(int index, object value)

		{

			FireChangedEvent();

		}



		protected override void OnInsertComplete(int index, object value)

		{

			FireChangedEvent();

		}



		protected override void OnSetComplete(int index, object oldValue, object newValue)

		{

			FireChangedEvent();

		}



		private void FireChangedEvent()

		{

			if ( Changed != null )

				Changed( this, EventArgs.Empty );

		}

		#endregion

	}

}