public void AddCollection(PTFlatGroupElement element)
{
if (Contains(element))
{
return;
}
else
{
PTFlatGroupCollection newCollection = new PTFlatGroupCollection(false);
newCollection.Add(element);
Collections.Add(newCollection);
}
}
public void UnGroup(PTFlatGroupElement element)
{
KeyValuePair <int, PTFlatGroupCollection> collection = FindCollectionWithIndexBy(element);
if (collection.Value != null)
{
collection.Value.Remove(element);
PTFlatGroupCollection newCollection = new PTFlatGroupCollection(false);
newCollection.Add(element);
Collections.Insert(collection.Key + 1, newCollection);
collection.Value.UpdateBackground(this);
if (collection.Value.Count == 0)
{
Collections.Remove(collection.Value);
}
}
UpdateContent();
}