/// <summary>
/// Adds an <see cref="IItemEventHandler"/> to the ItemEventHandlerList
/// </summary>
public static ItemEventHandlerList operator+(ItemEventHandlerList list, IItemEventHandler h)
{
ItemEventHandlerList r = new ItemEventHandlerList();
r.Handlers.AddRange(list.Handlers);
r.Handlers.Add(new WeakReference <IItemEventHandler>(h));
return(r);
}
/// <summary>
/// Removes an <see cref="IItemEventHandler"/> from the ItemEventHandlerList
/// </summary>
public static ItemEventHandlerList operator-(ItemEventHandlerList list, IItemEventHandler h)
{
ItemEventHandlerList r = new ItemEventHandlerList();
foreach (WeakReference <IItemEventHandler> wr in list.Handlers)
{
if (wr.Target != h)
{
r.Handlers.Add(wr);
}
}
return(r);
}
