public void AddNodeToUndo(Event task, int A, int B,Lesson lessonToUndo,bool undoEventAfter,bool redoEventAfter)
{
undoRedoEvent eventToAdd = new undoRedoEvent(task, A, B,lessonToUndo,undoEventAfter,redoEventAfter);
if (redoStack.Count != 0) redoStack.Clear(); //when undoing, this will automatically get rid of all redo values.
undoStack.Push(eventToAdd);
undoToolStripMenuItem.Enabled = undoStack.Count > 1;
redoToolStripMenuItem.Enabled = redoStack.Count > 1;
}
private void UndoRedoEvents(undoRedoEvent e)
{
switch (e.task)
{
case Event.MovePeriod:
if (e.lessonToUndo.PeriodIndex == e.B) currentTT.MovePeriods(e.lessonToUndo, Convert.ToByte(e.A));
else throw new Exception();
break;
case Event.MoveYear:
if (e.lessonToUndo.YearIndex == e.B) currentTT.MoveYears(e.lessonToUndo, Convert.ToByte(e.A));
else throw new Exception();
break;
case Event.MoveStaff:
if (e.lessonToUndo.TeacherAbbreviation == currentTT.Staff[e.B].TeacherAbbreviation) currentTT.MoveTeacher(e.lessonToUndo, Convert.ToByte(e.A));
else throw new Exception();
break;
case Event.MoveRoom:
if (e.lessonToUndo.RoomCode == currentTT.Rooms[e.B].RoomCode) currentTT.MoveRooms(e.lessonToUndo, Convert.ToByte(e.A));
else throw new Exception();
break;
case Event.MoveForm:
if (e.lessonToUndo.FormIndex == e.B) currentTT.MoveForms(e.lessonToUndo, Convert.ToByte(e.A));
else throw new Exception();
break;
case Event.MoveToTray:
break;
case Event.MoveFromTray:
break;
case Event.MoveSubject:
if (e.B == currentTT.GetIndexOfSubject(e.lessonToUndo.SubjectAbbreviation))
{
e.lessonToUndo.SubjectAbbreviation = currentTT.Subjects[e.A].SubjectAbbreviation;
}
else throw new Exception();
break;
case Event.ChangeHomework:
e.lessonToUndo.homeworkAmount = Convert.ToByte(e.A);
break;
case Event.ChangeLocked:
e.lessonToUndo.locked = (e.A == 255);
break;
case Event.ChangeInvisible:
e.lessonToUndo.invisible = (e.A == 255);
break;
default:
break;
}
}