public override void Undo(Ares.Data.IProject project)
{
m_Parent.Nodes.Insert(m_Index, m_Node);
IBackgroundSounds bgSounds = m_Parent.Tag as IBackgroundSounds;
bgSounds.InsertElement(m_Index, (m_Node.Tag as IBackgroundSoundChoice));
Data.DataModule.ElementRepository.AddElement((m_Node.Tag as IBackgroundSoundChoice));
Ares.ModelInfo.ModelChecks.Instance.CheckAll(project);
ElementRemoval.NotifyUndo(m_Node.Tag as IBackgroundSoundChoice);
ElementChanges.Instance.ElementChanged(bgSounds.Id);
}
