internal bool Contains(object item)
{
var group = item as DataGridCollectionViewGroup;
if (group != null)
{
//Must make sure the group the group is ref equals, because there can be groups with a null name at more than one level.
DataGridCollectionViewGroup foundGroup;
if (m_subGroups.TryGetValue(DataGridCollectionViewGroup.GetHashKeyFromName(group.Name), out foundGroup))
{
return(foundGroup == group);
}
return(false);
}
DataGridCollectionView collectionView = this.GetCollectionView();
if (collectionView != null)
{
RawItem rawItem = collectionView.GetFirstRawItemFromDataItem(item);
if (rawItem != null)
{
return(rawItem.ParentGroup == this);
}
}
return(false);
}
internal bool Contains(object dataItem)
{
DataGridCollectionView collectionView = this.GetCollectionView();
if (collectionView != null)
{
RawItem rawItem = collectionView.GetFirstRawItemFromDataItem(dataItem);
if (rawItem != null)
{
return(rawItem.ParentGroup == this);
}
}
return(false);
}
internal int IndexOf(object dataItem)
{
DataGridCollectionView collectionView = this.GetCollectionView();
if (collectionView != null)
{
RawItem rawItem = collectionView.GetFirstRawItemFromDataItem(dataItem);
if ((rawItem != null) &&
(rawItem.ParentGroup == this))
{
return(rawItem.SortedIndex);
}
}
return(-1);
}
internal int IndexOf(object item)
{
if (item is DataGridCollectionViewGroup)
{
return(this.ProtectedItems.IndexOf(item));
}
DataGridCollectionView collectionView = this.GetCollectionView();
if (collectionView != null)
{
RawItem rawItem = collectionView.GetFirstRawItemFromDataItem(item);
if ((rawItem != null) && (rawItem.ParentGroup == this))
{
return(rawItem.SortedIndex);
}
}
return(-1);
}
