public void Submit(UndoItem op)
{
if (op.DoCommand())
{
_undoManager.AddUndoItem(op);
_Modified = true;
}
}
public void Redo()
{
if (redoStack.Count > 0)
{
UndoItem op = redoStack.Pop();
op.Redo();
undoStack.Push(op);
}
}
public void Undo()
{
if (undoStack.Count > 0)
{
UndoItem op = undoStack.Pop();
op.Undo();
redoStack.Push(op);
}
}
public void AddUndoItem(UndoItem op)
{
undoStack.Push(op);
redoStack.Clear();
}