//
// System.ComponentModel.EventHandlerList.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.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.
//
using System;
using System.Collections;
namespace System.ComponentModel {
//
// List of Event delegates.
//
//
//
// Longer description
//
public sealed class EventHandlerList : IDisposable {
Hashtable table;
public EventHandlerList ()
{
}
public Delegate this [object key] {
get {
if (table == null)
return null;
return table [key] as Delegate;
}
set {
AddHandler (key, value);
}
}
public void AddHandler (object key, Delegate value)
{
if (table == null)
table = new Hashtable ();
Delegate prev = table [key] as Delegate;
prev = Delegate.Combine (prev, value);
table [key] = prev;
}
public void RemoveHandler (object key, Delegate value)
{
if (table == null)
return;
Delegate prev = table [key] as Delegate;
prev = Delegate.Remove (prev, value);
table [key] = prev;
}
public void Dispose ()
{
table = null;
}
}
}