buildTimestampCell function

Implementation

DataCell buildTimestampCell({
  required BuildContext context,
  required BPEditorState editorState,
  required BPObservation observation,
  required BPObservation currentEdit,

  // The callback we just added.

  required ValueChanged<DateTime> onTimestampChanged,
}) {
  return DataCell(
    InkWell(
      onTap: () async {
        final date = await showDatePicker(
          context: context,
          initialDate: currentEdit.timestamp,
          firstDate: DateTime(2000),
          lastDate: DateTime.now(),
        );
        if (!context.mounted) return;

        if (date != null) {
          final time = await showTimePicker(
            context: context,
            initialTime: TimeOfDay.fromDateTime(currentEdit.timestamp),
          );
          if (time != null && context.mounted) {
            final newTimestamp = DateTime(
              date.year,
              date.month,
              date.day,
              time.hour,
              time.minute,
            );

            // Check for duplicates.

            final conflict = editorState.observations.any(
              (r) => r.timestamp == newTimestamp && r != observation,
            );
            if (conflict) {
              ScaffoldMessenger.of(context).showSnackBar(
                const SnackBar(
                  content: Text(
                    'An observation with this date/time already exists',
                  ),
                ),
              );
              return;
            }

            // Instead of updating editorState here, call the parent's callback.

            onTimestampChanged(newTimestamp);
          }
        }
      },
      child: Padding(
        padding: const EdgeInsets.symmetric(vertical: 8.0),
        child: Text(
          DateFormat('yyyy-MM-dd HH:mm:ss').format(currentEdit.timestamp),
          style: const TextStyle(
            decoration: TextDecoration.underline,
            color: Colors.blue,
          ),
        ),
      ),
    ),
  );
}