onSelectedRowsChanged method

@override void onSelectedRowsChanged()

Called when the selectedRows property in SfDataGrid.controller is changed.

Implementation

@override
void onSelectedRowsChanged() {
  final DataGridConfiguration dataGridConfiguration =
      _dataGridStateDetails!();

  if (dataGridConfiguration.selectionMode != SelectionMode.multiple ||
      dataGridConfiguration.selectionMode == SelectionMode.none) {
    return;
  }

  final List<DataGridRow> newValue = dataGridConfiguration
      .controller
      .selectedRows
      .toList(growable: false);

  if (newValue.isEmpty) {
    _clearSelectedRows(dataGridConfiguration);
    notifyListeners();
    return;
  }

  _clearSelectedRows(dataGridConfiguration);
  final List<DataGridRow> visibleRows =
      newValue
          .where(
            (row) =>
                effectiveRows(dataGridConfiguration.source).contains(row),
          )
          .toList();
  _selectedRows.addAll(visibleRows);
  dataGridConfiguration.controller.selectedRows.addAll(visibleRows);
  _refreshSelection();
  dataGridConfiguration.container
    ..isDirty = true
    ..refreshView();
  _updateCheckboxStateOnHeader(dataGridConfiguration);

  if (dataGridConfiguration.navigationMode == GridNavigationMode.cell &&
      _selectedRows.isNotEmpty) {
    final DataGridRow lastRecord = _selectedRows.last;
    _addCurrentCell(
      lastRecord,
      dataGridConfiguration,
      isSelectionChanging: true,
    );
  } else if (dataGridConfiguration.isDesktop &&
      dataGridConfiguration.navigationMode == GridNavigationMode.row) {
    final DataGridRow lastRecord = _selectedRows.last;
    final int rowIndex = selection_helper.resolveToRowIndex(
      dataGridConfiguration,
      lastRecord,
    );
    dataGridConfiguration.currentCell._updateBorderForMultipleSelection(
      dataGridConfiguration,
      nextRowColumnIndex: RowColumnIndex(rowIndex, -1),
    );
  }

  notifyListeners();
}