private void CheckPopUnit(PopUnitReason reason)
{
if ((reason != PopUnitReason.Normal) || !this._host.InTransaction)
{
UndoUnit unit = (UndoUnit)this._unitStack.Pop();
if (!unit.IsEmpty)
{
unit.Close();
if (reason != PopUnitReason.TransactionCancel)
{
if (this._unitStack.Count == 0)
{
this.AddUndoUnit(unit);
}
}
else
{
unit.Undo();
if (this._unitStack.Count == 0)
{
this.DiscardUndoUnit(unit);
}
}
}
else if (this._unitStack.Count == 0)
{
this.DiscardUndoUnit(unit);
}
}
}
public void DoRedo()
{
if (this.currentPos < this.undoUnitList.Count)
{
UndoUnit undoUnit = this.undoUnitList[this.currentPos];
undoUnit.Undo();
this.currentPos++;
}
this.UpdateUndoRedoMenuCommandsStatus();
}
public void DoUndo()
{
if (this.currentPos > 0)
{
UndoUnit undoUnit = this.undoUnitList[this.currentPos - 1];
undoUnit.Undo();
this.currentPos--;
}
this.UpdateUndoRedoMenuCommandsStatus();
}
public void Undo(int actionsCount)
{
if (actionsCount <= 0 || actionsCount > _undoUnits.Count)
{
return;
}
for (; actionsCount != 0; actionsCount--)
{
UndoUnit unit = _undoUnits.Pop();
// Console.WriteLine ("undo: " + unit.Name);
unit.Undo();
_redoUnits.Push(unit);
}
}
