/// <summary>
/// Return true if the element is the last in the queue
/// </summary>
/// <returns></returns>
public void Redo()
{
if (_redoLines.Count != 0)
{
Tuple <ActionType, ILineModel> line = _redoLines.Pop();
switch (line.Item1)
{
case ActionType.Add:
CreateLine(line.Item2, true);
LineAddedSignal.Dispatch(line.Item2);
break;
case ActionType.Edit:
UpdateLine(line.Item2, true);
LineUpdatedSignal.Dispatch(line.Item2);
break;
case ActionType.Delete:
DeleteLine(line.Item2, true);
LineDeletedSignal.Dispatch(line.Item2.Guid);
break;
}
}
SaveAvailableSignal.Dispatch(_redoLines.Count != 0);
RedoAvailableSignal.Dispatch(_redoLines.Count != 0);
}
private void UpdateLine(ILineModel line, bool undo)
{
ProjectService.UpdateLine((LineModel)line);
if (undo)
{
_undoLines.Push(new Tuple <ActionType, ILineModel>(ActionType.Edit, line));
UndoAvailableSignal.Dispatch(true);
}
else
{
_redoLines.Push(new Tuple <ActionType, ILineModel>(ActionType.Edit, line));
RedoAvailableSignal.Dispatch(true);
}
}
private void DeleteLine(ILineModel line, bool undo)
{
ProjectService.DeleteLine(line.Guid);
if (undo)
{
_undoLines.Push(new Tuple <ActionType, ILineModel>(ActionType.Delete, line));
UndoAvailableSignal.Dispatch(true);
}
else
{
_redoLines.Push(new Tuple <ActionType, ILineModel>(ActionType.Add, line));
RedoAvailableSignal.Dispatch(true);
}
}
public override void OnRemove()
{
base.OnRemove();
UndoAvailableSignal.RemoveListener(OnUndoAvailableReceived);
RedoAvailableSignal.RemoveListener(OnRedoAvailableReceived);
SaveAvailableSignal.RemoveListener(OnSaveAvailableReceived);
FullCleanupSignal.RemoveListener(OnFullCleanupReceived);
View.PointerInfoSignal.RemoveListener(OnPointerSignal);
View.UndoSignal.RemoveListener(OnUndoRequested);
View.RedoSignal.RemoveListener(OnRedoRequested);
View.ToggleDrawModeSignal.RemoveListener(OnToggleDrawMode);
View.SaveProjectSignal.RemoveListener(OnSaveRequested);
View.SaveProjectAsSignal.RemoveListener(OnSaveAsRequested);
View.LoadProjectSignal.RemoveListener(OnLoadRequested);
View.NewProjectSignal.RemoveListener(OnNewRequested);
}
