public void DeleteFigures(IEnumerable <IFigure> figures)
{
foreach (IFigure figure in figures)
{
DrawingView.Remove(figure);
}
DrawingView.ClearSelection();
}
public override bool Undo()
{
if (base.Undo() && AffectedFigures.Count() > 0)
{
DrawingView.ClearSelection();
AffectedFigures = _command.InsertFigures(AffectedFigures.Reverse().ToFigures(), 0, 0);
return(true);
}
return(false);
}
public override void Execute()
{
base.Execute();
UndoActivity = CreateUndoActivity();
FigureCollection figures = new FigureCollection(DrawingView.SelectionEnumerator).Clone();
UndoActivity.AffectedFigures = figures;
DrawingView.ClearSelection();
UndoActivity.AffectedFigures = base.InsertFigures(UndoActivity.AffectedFigures, 10, 10);
}
public override bool Redo()
{
// do not call execute directly as the selection might has changed
if (Redoable == false)
{
return(false);
}
_command.DeleteFigures(AffectedFigures.ToFigures());
DrawingView.ClearSelection();
return(true);
}
public override bool Undo()
{
if (base.Undo() == false)
{
return(false);
}
DrawingView.ClearSelection();
DrawingView.AddToSelection(AffectedFigures.ToFigures());
return(true);
}
public override bool Undo()
{
// TODO: This doesn't seem neccesary
if (base.Undo() == false)
{
return(false);
}
DeleteFromDrawingVisitor visitor = new DeleteFromDrawingVisitor(DrawingView.Drawing);
foreach (IFigure figure in AffectedFigures)
{
figure.Visit(visitor);
}
DrawingView.ClearSelection();
return(true);
}