/// <summary>
/// Команда Отменить
/// </summary>
private void UndoImplementation()
{
if (!Commands.Any())
{
return;
}
var commandToUndo = Commands[Commands.Count - 1];
commandToUndo.Rollback();
Commands.RemoveAt(Commands.Count - 1);
UndoedCommands.Add(commandToUndo);
}
/// <summary>
/// Команда Вернуть
/// </summary>
private void RedoImplementation()
{
if (!UndoedCommands.Any())
{
return;
}
var commandToRedo = UndoedCommands[Commands.Count - 1];
commandToRedo.Execute();
UndoedCommands.RemoveAt(Commands.Count - 1);
Commands.Add(commandToRedo);
}
/// <summary>
/// Выполняет новую команду
/// </summary>
/// <param name="command">команда</param>
public void ExecuteNewCommand(IUndoRedoCommand command)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
if (UndoedCommands.Any())
{
UndoedCommands.Clear();
}
Commands.Add(command);
command.Execute();
}
internal void Clear()
{
UndoedCommands.Clear();
Commands.Clear();
}
