/// <inheritdoc/>
public bool Redo()
{
if (Redos.Count > 0)
{
IsPaused = true;
var state = Redos.Pop();
if (Redos.Count == 0)
{
_canRedo.OnNext(false);
}
state.Redo.Invoke();
Undos.Push(state);
_canUndo.OnNext(true);
_canClear.OnNext(true);
IsPaused = false;
return(true);
}
return(false);
}
/// <inheritdoc/>
public void Snapshot(Action undo, Action redo)
{
if (undo == null)
{
throw new ArgumentNullException(nameof(undo));
}
if (redo == null)
{
throw new ArgumentNullException(nameof(redo));
}
if (Redos.Count > 0)
{
Redos.Clear();
_canRedo.OnNext(false);
}
Undos.Push(new State(undo, redo));
_canUndo.OnNext(true);
_canClear.OnNext(true);
}
