public virtual IDisposable[] PublishOrderedCommands(CommandBase[] commands, IObserver <ICommandResponse <Unit> >[] observers = null)
{
var disposables = new List <IDisposable>();
var commandsTracking = commands.OrderBy(c => c.Order).ToDictionary(c => c as ICommandBase, c => false);
var filter = CreateOrderedCommandsFilter(commands, commandsTracking);
filter.UnregisterToken = RegisterForCompletedCommands(filter.CompletedCommandsObserver);
var pusbFilterDispose =
RegisterForCompletedCommands(Observer.Create <CommandBase>(c => TraversePendingCommands()));
filter.Finalizer = () =>
{
pusbFilterDispose.Dispose();
filter.Finalizer = null;
_filterManager.RemoveFilter(filter);
};
_filterManager.AddFilter(filter);
for (int i = 0; i < commands.Length; i++)
{
var command = commands[i];
IObserver <ICommandResponse <Unit> > observer = null;
if (observers != null)
{
observer = observers.ElementAtOrDefault(i);
}
disposables.Add(PublishCommand(command, observer));
}
return(disposables.ToArray());
}
public CommandBase CreateCommand(Type type, params object[] args)
{
CommandBase instance = (CommandBase)Activator.CreateInstance(type, args);
if (instance is BusyCommandBase)
{
instance.BeforeExecuteAction = c => _filterManager.AddFilter(_busyFilter);
instance.CompleteAction = c => _filterManager.RemoveFilter(_busyFilter);
instance.RegisterForStateChange(Observer.Create <IObservedChange <CommandBase, CommandState> >(b =>
{
if (b.Value == CommandState.Blocked || b.Value == CommandState.Canceled)
{
_filterManager.RemoveFilter(_busyFilter);
}
}));
}
if (OnCreateCommand != null)
{
OnCreateCommand(instance);
}
return(instance);
}
