The metadata for a focusable Grid row. Focusable rows include
headers, group headers and footers, and data rows.
An array of focusable cells which are associated with this row.
The data item for this row.
The data item index for this row.
The logical index of the focusable row.
- Header rows are included, starting at index 0.
- Group headers and footers are included.
- The row indexing is absolute and does not change with paging.