CommandTargetStatus ExecuteNext(ICommandTargetFilter filter, Guid group, int cmdId, object args, ref object result)
{
int index = IndexOf(filter);
if (index < 0)
{
return(CommandTargetStatus.NotHandled);
}
return(Execute(index + 1, group, cmdId, args, ref result));
}
CommandTargetStatus CanExecuteNext(ICommandTargetFilter filter, Guid group, int cmdId)
{
int index = IndexOf(filter);
if (index < 0)
{
return(CommandTargetStatus.NotHandled);
}
return(CanExecute(index + 1, group, cmdId));
}
int IndexOf(ICommandTargetFilter filter)
{
for (int i = 0; i < commandTargetInfos.Count; i++)
{
if (commandTargetInfos[i].Filter == filter)
{
return(i);
}
}
return(-1);
}
public void RemoveFilter(ICommandTargetFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
int index = IndexOf(filter);
if (index < 0)
{
return;
}
commandTargetInfos.RemoveAt(index);
}
public void AddFilter(ICommandTargetFilter filter, double order)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
if (IndexOf(filter) >= 0)
{
throw new ArgumentException("Filter has already been added to the list");
}
int index = GetNewFilterIndex(order);
commandTargetInfos.Insert(index, new CommandTargetFilterInfo(filter, order));
filter.SetNextCommandTarget(new NextCommandTarget(this, filter));
}
public NextCommandTarget(RegisteredCommandElement owner, ICommandTargetFilter filter)
{
ownerWeakRef = new WeakReference(owner);
filterWeakRef = new WeakReference(filter);
}
public void RemoveFilter(ICommandTargetFilter filter) => registeredCommandElement.RemoveFilter(filter);
public void AddFilter(ICommandTargetFilter filter, double order) => registeredCommandElement.AddFilter(filter, order);
public CommandTargetFilterInfo(ICommandTargetFilter filter, double order)
{
Filter = filter;
Order = order;
}
public void RemoveFilter(ICommandTargetFilter filter)
{
}
public void AddFilter(ICommandTargetFilter filter, double order)
{
}
public void RemoveFilter(ICommandTargetFilter filter) { }
public void AddFilter(ICommandTargetFilter filter, double order) { }
