private void NodeChanging(object sender, XmlNodeChangedEventArgs e)
{
if (this._Undoing)
{
return;
}
switch (e.Action)
{
case XmlNodeChangedAction.Insert:
_pState = NodeInsertedUndo.PreviousState(e);
break;
case XmlNodeChangedAction.Remove:
_pState = NodeRemovedUndo.PreviousState(e);
break;
case XmlNodeChangedAction.Change:
_pState = NodeChangedUndo.PreviousState(e);
break;
default:
throw new Exception("Unknown Action");
}
}
private void NodeChanged(object sender, XmlNodeChangedEventArgs e)
{
if (this._Undoing)
{
// if we're undoing ignore the event since it is the result of an undo
_pState = null;
_Undoing = false;
return;
}
UndoItem undo = null;
switch (e.Action)
{
case XmlNodeChangedAction.Insert:
undo = new NodeInsertedUndo(e, _pState);
break;
case XmlNodeChangedAction.Remove:
undo = new NodeRemovedUndo(e, _pState);
break;
case XmlNodeChangedAction.Change:
undo = new NodeChangedUndo(e, _pState);
break;
default:
throw new Exception("Unknown Action");
}
_pState = null;
if (_currentUndoGroup != null)
{
_currentUndoGroup.AddUndoItem(undo);
}
else if (GroupsOnly)
{
_pState = null;
}
else
{
_actions.Push(undo);
}
}