FdcGridRangeSelectionCellTextReader typedef

FdcGridRangeSelectionCellTextReader = String Function(int rowIndex, int columnIndex)

Reads display text for one grid cell during range-copy serialization.

The grid host supplies this callback and the range-selection session calls it. Both indexes are zero-based and use data-row and source-column coordinates, not viewport-relative positions. Implementations must return text for every valid coordinate requested by the session; failures are propagated to the caller.

This typedef is part of the stable fdc_ext.dart extension seam.

Implementation

typedef FdcGridRangeSelectionCellTextReader =
    String Function(int rowIndex, int columnIndex);