horizontal_data_table

A Flutter Widget that create a horizontal table with fixed column on left hand side.

Usage

This shows Widget’s full customizations:

HorizontalDataTable(
      {@required this.leftHandSideColumnWidth,
      @required this.rightHandSideColumnWidth,
      this.isFixedHeader = false,
      this.headerWidgets,
      this.leftSideItemBuilder,
      this.rightSideItemBuilder,
      this.itemCount = 0,
      this.leftSideChildren,
      this.rightSideChildren,
      this.rowSeparatorWidget = const Divider(
        color: Colors.transparent,
        height: 0.0,
        thickness: 0.0,
      ),
      this.elevation = 5.0,
      this.elevationColor = Colors.black54,
      this.leftHandSideColBackgroundColor = Colors.white,
      this.rightHandSideColBackgroundColor = Colors.white,
      }
     )

1. Left side column(leftHandSideColumnWidth) and right side maximum scrollable area width(rightHandSideColumnWidth) are required to input.
2. isFixedHeader is to define whether use fixed top row header. If true, headerWidgets is required. Default is false.
3. This widget allow set children in two ways,
   a. Directly add list of child widget (leftSideChildren and rightSideChildren)
   b. (Recommended) Using index builder to assign each row’s widget. itemCount is required to count the number of row.
4. rowSeparatorWidget is to add Divider of each Row. Default is turned off.
5. elevation is the shadow between the header row and the left column when scroll start. Default set to 5.0. If want to disable the shadow, please set to 0.0.
6. elevationColor is for changing shadow color. This should be useful when using dark table background.
7. added leftHandSideColBackgroundColor and rightHandSideColBackgroundColor for setting the default background of the back of table. Default is set to white following the Material widget.

Example

import 'package:flutter/material.dart';
import 'package:horizontal_data_table/horizontal_data_table.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  static const int sortName = 0;
  static const int sortStatus = 1;
  bool isAscending = true;
  int sortType = sortName;

  @override
  void initState() {
    user.initData(100);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: _getBodyWidget(),
    );
  }

  Widget _getBodyWidget() {
    return Container(
      child: HorizontalDataTable(
        leftHandSideColumnWidth: 100,
        rightHandSideColumnWidth: 600,
        isFixedHeader: true,
        headerWidgets: _getTitleWidget(),
        leftSideItemBuilder: _generateFirstColumnRow,
        rightSideItemBuilder: _generateRightHandSideColumnRow,
        itemCount: user.userInfo.length,
        rowSeparatorWidget: const Divider(
          color: Colors.black54,
          height: 1.0,
          thickness: 0.0,
        ),
        leftHandSideColBackgroundColor: Color(0xFF2A2A2A),
        rightHandSideColBackgroundColor: Color(0xFFFFFFFF),
      ),
      height: MediaQuery.of(context).size.height,
    );
  }

  List<Widget> _getTitleWidget() {
    return [
      FlatButton(
        padding: EdgeInsets.all(0),
        child: _getTitleItemWidget('Name'+(sortType==sortName?(isAscending?'↓':'↑'):''), 100),
        onPressed: () {
          sortType = sortName;
          isAscending = !isAscending;
          user.sortName(isAscending);
          setState(() {

          });
        },
      ),
      FlatButton(
        padding: EdgeInsets.all(0),
        child: _getTitleItemWidget('Status'+(sortType==sortStatus?(isAscending?'↓':'↑'):''), 100),
        onPressed: () {
          sortType = sortStatus;
          isAscending = !isAscending;
          user.sortStatus(isAscending);
          setState(() {

          });
        },
      ),
      _getTitleItemWidget('Phone', 200),
      _getTitleItemWidget('Register', 100),
      _getTitleItemWidget('Termination', 200),
    ];
  }

  Widget _getTitleItemWidget(String label, double width) {
    return Container(
      child: Text(label, style: TextStyle(fontWeight: FontWeight.bold)),
      width: width,
      height: 56,
      padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
      alignment: Alignment.centerLeft,
    );
  }

  Widget _generateFirstColumnRow(BuildContext context, int index) {
    return Container(
      child: Text(user.userInfo[index].name),
      width: 100,
      height: 52,
      padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
      alignment: Alignment.centerLeft,
    );
  }

  Widget _generateRightHandSideColumnRow(BuildContext context, int index) {
    return Row(
      children: <Widget>[
        Container(
          child: Row(
            children: <Widget>[
              Icon(
                  user.userInfo[index].status
                      ? Icons.notifications_off
                      : Icons.notifications_active,
                  color: user.userInfo[index].status ? Colors.red : Colors.green),
              Text(user.userInfo[index].status ? 'Disabled' : 'Active')
            ],
          ),
          width: 100,
          height: 52,
          padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
          alignment: Alignment.centerLeft,
        ),
        Container(
          child: Text(user.userInfo[index].phone),
          width: 200,
          height: 52,
          padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
          alignment: Alignment.centerLeft,
        ),
        Container(
          child: Text(user.userInfo[index].registerDate),
          width: 100,
          height: 52,
          padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
          alignment: Alignment.centerLeft,
        ),
        Container(
          child: Text(user.userInfo[index].terminationDate),
          width: 200,
          height: 52,
          padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
          alignment: Alignment.centerLeft,
        ),
      ],
    );
  }
}

User user = User();

class User {
  List<UserInfo> _userInfo = List<UserInfo>();

  void initData(int size) {
    for (int i = 0; i < size; i++) {
      _userInfo.add(UserInfo(
          "User_$i", i % 3 == 0, '+001 9999 9999', '2019-01-01', 'N/A'));
    }
  }

  List<UserInfo> get userInfo => _userInfo;

  set userInfo(List<UserInfo> value) {
    _userInfo = value;
  }

  ///
  /// Single sort, sort Name's id
  void sortName(bool isAscending) {
    _userInfo.sort((a, b) {
      int aId = int.tryParse(a.name.replaceFirst('User_', ''));
      int bId = int.tryParse(b.name.replaceFirst('User_', ''));
      return (aId-bId) * (isAscending ? 1 : -1);
    });
  }

  ///
  /// sort with Status and Name as the 2nd Sort
  void sortStatus(bool isAscending) {
    _userInfo.sort((a, b) {
      if (a.status == b.status) {
        int aId = int.tryParse(a.name.replaceFirst('User_', ''));
        int bId = int.tryParse(b.name.replaceFirst('User_', ''));
        return (aId-bId);
      } else if (a.status) {
        return isAscending ? 1 : -1;
      } else {
        return isAscending ? -1 : 1;
      }
    });
  }
}

class UserInfo {
  String name;
  bool status;
  String phone;
  String registerDate;
  String terminationDate;

  UserInfo(this.name, this.status, this.phone, this.registerDate,
      this.terminationDate);
}

Source Code

Please Visit Flutter Table Widget Source Code at GitHub