KonectarEvents/lib/widgets/customtopicscard.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:konectar_events/utils/util.dart';
import 'package:konectar_events/widgets/custombutton.dart';

class CustomEventTopicsCard extends StatelessWidget {
  const CustomEventTopicsCard({super.key});

  @override
  Widget build(BuildContext context) {
    return FittedBox(
      child: Container(
          padding: EdgeInsets.all(8.0),
          width: isTablet
              ? MediaQuery.of(context).size.width
              : MediaQuery.of(context).size.width,
          // height: isTablet ? 320 : 280,
          child: Column(
            children: [
              TopicsDataTable(),
            ],
          )),
    );
  }
}

class TopicsDataTable extends StatelessWidget {
  Widget build(BuildContext context) {
    return SizedBox(
      height: isTablet ? 300 : 250,
      width: isTablet ? MediaQuery.of(context).size.width : 380,
      child: ListView(
        padding: const EdgeInsets.all(2),
        children: [
          PaginatedDataTable(
            columnSpacing: isTablet ? 56.0 : 14,
            header: Center(child: Text('Husain Hatim')),
            rowsPerPage: 2,
            showCheckboxColumn: false,
            actions: [],
            headingRowColor: MaterialStatePropertyAll(Colors.blue),
            columns: [
              DataColumn(
                  label: FittedBox(
                      //  width: 60,
                      child: Center(child: Text('Section Name(s)')))),
              DataColumn(label: FittedBox(child: Text('Topics'))),
            ],
            source: _DataSource(context),
          ),
        ],
      ),
    );
  }
}

class _Row {
  _Row(this.session, this.topic);

  final String session;
  final String topic;
  // final List<String> data;
  bool selected = false;
}

class _DataSource extends DataTableSource {
  _DataSource(this.context) {
    _rows = <_Row>[
      _Row('Program Committee', 'Admin. & Management'),
      _Row('Program Committee', 'Admin. & Management'),
    ];
  }

  final BuildContext context;
  late List<_Row> _rows;

  int _selectedCount = 0;

  @override
  DataRow? getRow(int index) {
    assert(index >= 0);
    if (index >= _rows.length) return null;
    final row = _rows[index];
    return DataRow.byIndex(
      index: index,
      selected: row.selected,
      onSelectChanged: (value) {
        if (row.selected != value) {
          _selectedCount += value! ? 1 : -1;
          assert(_selectedCount >= 0);
          row.selected = value;
          notifyListeners();
        }
      },
      cells: [
        DataCell(Text(
          row.session,
          style: TextStyle(fontSize: isTablet ? 18 : 14),
        )),
        DataCell(
            Text(row.topic, style: TextStyle(fontSize: isTablet ? 18 : 14))),
      ],
    );
  }

  @override
  int get rowCount => _rows.length;

  @override
  bool get isRowCountApproximate => false;

  @override
  int get selectedRowCount => _selectedCount;
}