protected override void RestoringVisit(DataGridContext sourceContext, CollectionViewGroup group, object[] namesTree, int groupLevel, bool isExpanded, bool isComputedExpanded)
{
if (sourceContext != m_rootDataGridContext)
{
throw new InvalidOperationException("Group does not belong to the root DataGridContext.");
}
if (groupLevel > m_maxGroupLevel)
{
return;
}
GroupNamesTreeKey groupNamesTreeKey = new GroupNamesTreeKey(namesTree);
bool wasExpanded;
if (m_groupsStateDictionary.TryGetValue(groupNamesTreeKey, out wasExpanded))
{
if (wasExpanded)
{
sourceContext.ExpandGroup(group, true);
}
else
{
sourceContext.CollapseGroup(group, true);
}
}
else if (m_stopAtFirstCollapsedGroup)
{
sourceContext.CollapseGroup(group, true);
}
}
