public void Undo()
{
IAction lastAction = Actions.Pop();
IAction redoAction = lastAction.GetInverseAction();
RedoActions.Push(redoAction);
lastAction?.Revert();
}
public void Redo()
{
IAction lastUndoAction = RedoActions.Pop();
IAction undoAction = lastUndoAction.GetInverseAction();
Actions.Push(undoAction);
lastUndoAction?.Revert();
}
public void Redo(IAction action)
{
var index = Actions.IndexOf(action);
if (index != -1)
{
for (var i = 0; i <= index; i++)
{
IAction undoAction = Actions.Pop();
var redoAction = undoAction.GetInverseAction();
RedoActions.Push(redoAction);
undoAction.Revert();
}
}
}
public void Redo(UndoRedoAction a_action = null)
{
if (!CanRedo)
{
throw new InvalidOperationException();
}
if (IsInUndoRedo)
{
throw new InvalidOperationException();
}
if (a_action == null)
{
a_action = RedoActions.First();
}
if (!RedoActions.Contains(a_action))
{
throw new ArgumentException();
}
m_undo_redo = true;
try
{
var todo = RedoActions.Reverse().SkipWhile(a => a != a_action).Reverse();
todo.First().UndoState.Save();
foreach (var action in todo)
{
if (UndoRedoConfiguration.Logging)
{
System.Console.WriteLine("redo: " + action.RedoDescription);
}
action.Redo();
m_action_index++;
}
todo.Last().RedoState.Restore();
}
finally
{
m_undo_redo = false;
}
OnChanged();
}
private void AddUndoAction(IAction action)
{
Actions.Push(action);
RedoActions.Clear();
}
