mirror of https://github.com/flutter/samples.git
[Gallery] Implement Material Data table demo (#262)
rami-a
5 years ago
committed by
GitHub
parent
882f33c1a8
commit
b04fbf7292
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,551 @@
|
||||
// Copyright 2019 The Flutter team. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style license that can be
|
||||
// found in the LICENSE file.
|
||||
|
||||
import 'package:flutter/material.dart';
|
||||
import 'package:flutter/rendering.dart';
|
||||
import 'package:gallery/data/gallery_options.dart';
|
||||
import 'package:gallery/l10n/gallery_localizations.dart';
|
||||
import 'package:intl/intl.dart';
|
||||
|
||||
// BEGIN dataTableDemo
|
||||
|
||||
class DataTableDemo extends StatefulWidget {
|
||||
@override
|
||||
_DataTableDemoState createState() => _DataTableDemoState();
|
||||
}
|
||||
|
||||
class _DataTableDemoState extends State<DataTableDemo> {
|
||||
int _rowsPerPage = PaginatedDataTable.defaultRowsPerPage;
|
||||
int _sortColumnIndex;
|
||||
bool _sortAscending = true;
|
||||
_DessertDataSource _dessertsDataSource;
|
||||
|
||||
@override
|
||||
void didChangeDependencies() {
|
||||
super.didChangeDependencies();
|
||||
if (_dessertsDataSource == null) {
|
||||
_dessertsDataSource = _DessertDataSource(context);
|
||||
}
|
||||
}
|
||||
|
||||
void _sort<T>(
|
||||
Comparable<T> getField(_Dessert d), int columnIndex, bool ascending) {
|
||||
_dessertsDataSource._sort<T>(getField, ascending);
|
||||
setState(() {
|
||||
_sortColumnIndex = columnIndex;
|
||||
_sortAscending = ascending;
|
||||
});
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
final localizations = GalleryLocalizations.of(context);
|
||||
return Scaffold(
|
||||
appBar: AppBar(
|
||||
automaticallyImplyLeading: false,
|
||||
title: Text(localizations.demoDataTableTitle),
|
||||
),
|
||||
body: Scrollbar(
|
||||
child: ListView(
|
||||
padding: const EdgeInsets.all(16),
|
||||
children: [
|
||||
PaginatedDataTable(
|
||||
header: Text(localizations.dataTableHeader),
|
||||
rowsPerPage: _rowsPerPage,
|
||||
onRowsPerPageChanged: (value) {
|
||||
setState(() {
|
||||
_rowsPerPage = value;
|
||||
});
|
||||
},
|
||||
sortColumnIndex: _sortColumnIndex,
|
||||
sortAscending: _sortAscending,
|
||||
onSelectAll: _dessertsDataSource._selectAll,
|
||||
columns: [
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnDessert),
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<String>((d) => d.name, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnCalories),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.calories, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnFat),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.fat, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnCarbs),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.carbs, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnProtein),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.protein, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnSodium),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.sodium, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnCalcium),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.calcium, columnIndex, ascending),
|
||||
),
|
||||
DataColumn(
|
||||
label: Text(localizations.dataTableColumnIron),
|
||||
numeric: true,
|
||||
onSort: (columnIndex, ascending) =>
|
||||
_sort<num>((d) => d.iron, columnIndex, ascending),
|
||||
),
|
||||
],
|
||||
source: _dessertsDataSource,
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class _Dessert {
|
||||
_Dessert(this.name, this.calories, this.fat, this.carbs, this.protein,
|
||||
this.sodium, this.calcium, this.iron);
|
||||
final String name;
|
||||
final int calories;
|
||||
final double fat;
|
||||
final int carbs;
|
||||
final double protein;
|
||||
final int sodium;
|
||||
final int calcium;
|
||||
final int iron;
|
||||
|
||||
bool selected = false;
|
||||
}
|
||||
|
||||
class _DessertDataSource extends DataTableSource {
|
||||
_DessertDataSource(this.context) {
|
||||
final localizations = GalleryLocalizations.of(context);
|
||||
_desserts = <_Dessert>[
|
||||
_Dessert(
|
||||
localizations.dataTableRowFrozenYogurt,
|
||||
159,
|
||||
6.0,
|
||||
24,
|
||||
4.0,
|
||||
87,
|
||||
14,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowIceCreamSandwich,
|
||||
237,
|
||||
9.0,
|
||||
37,
|
||||
4.3,
|
||||
129,
|
||||
8,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowEclair,
|
||||
262,
|
||||
16.0,
|
||||
24,
|
||||
6.0,
|
||||
337,
|
||||
6,
|
||||
7,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowCupcake,
|
||||
305,
|
||||
3.7,
|
||||
67,
|
||||
4.3,
|
||||
413,
|
||||
3,
|
||||
8,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowGingerbread,
|
||||
356,
|
||||
16.0,
|
||||
49,
|
||||
3.9,
|
||||
327,
|
||||
7,
|
||||
16,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowJellyBean,
|
||||
375,
|
||||
0.0,
|
||||
94,
|
||||
0.0,
|
||||
50,
|
||||
0,
|
||||
0,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowLollipop,
|
||||
392,
|
||||
0.2,
|
||||
98,
|
||||
0.0,
|
||||
38,
|
||||
0,
|
||||
2,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowHoneycomb,
|
||||
408,
|
||||
3.2,
|
||||
87,
|
||||
6.5,
|
||||
562,
|
||||
0,
|
||||
45,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowDonut,
|
||||
452,
|
||||
25.0,
|
||||
51,
|
||||
4.9,
|
||||
326,
|
||||
2,
|
||||
22,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowApplePie,
|
||||
518,
|
||||
26.0,
|
||||
65,
|
||||
7.0,
|
||||
54,
|
||||
12,
|
||||
6,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowFrozenYogurt,
|
||||
),
|
||||
168,
|
||||
6.0,
|
||||
26,
|
||||
4.0,
|
||||
87,
|
||||
14,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowIceCreamSandwich,
|
||||
),
|
||||
246,
|
||||
9.0,
|
||||
39,
|
||||
4.3,
|
||||
129,
|
||||
8,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowEclair,
|
||||
),
|
||||
271,
|
||||
16.0,
|
||||
26,
|
||||
6.0,
|
||||
337,
|
||||
6,
|
||||
7,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowCupcake,
|
||||
),
|
||||
314,
|
||||
3.7,
|
||||
69,
|
||||
4.3,
|
||||
413,
|
||||
3,
|
||||
8,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowGingerbread,
|
||||
),
|
||||
345,
|
||||
16.0,
|
||||
51,
|
||||
3.9,
|
||||
327,
|
||||
7,
|
||||
16,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowJellyBean,
|
||||
),
|
||||
364,
|
||||
0.0,
|
||||
96,
|
||||
0.0,
|
||||
50,
|
||||
0,
|
||||
0,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowLollipop,
|
||||
),
|
||||
401,
|
||||
0.2,
|
||||
100,
|
||||
0.0,
|
||||
38,
|
||||
0,
|
||||
2,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowHoneycomb,
|
||||
),
|
||||
417,
|
||||
3.2,
|
||||
89,
|
||||
6.5,
|
||||
562,
|
||||
0,
|
||||
45,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowDonut,
|
||||
),
|
||||
461,
|
||||
25.0,
|
||||
53,
|
||||
4.9,
|
||||
326,
|
||||
2,
|
||||
22,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithSugar(
|
||||
localizations.dataTableRowApplePie,
|
||||
),
|
||||
527,
|
||||
26.0,
|
||||
67,
|
||||
7.0,
|
||||
54,
|
||||
12,
|
||||
6,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowFrozenYogurt,
|
||||
),
|
||||
223,
|
||||
6.0,
|
||||
36,
|
||||
4.0,
|
||||
87,
|
||||
14,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowIceCreamSandwich,
|
||||
),
|
||||
301,
|
||||
9.0,
|
||||
49,
|
||||
4.3,
|
||||
129,
|
||||
8,
|
||||
1,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowEclair,
|
||||
),
|
||||
326,
|
||||
16.0,
|
||||
36,
|
||||
6.0,
|
||||
337,
|
||||
6,
|
||||
7,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowCupcake,
|
||||
),
|
||||
369,
|
||||
3.7,
|
||||
79,
|
||||
4.3,
|
||||
413,
|
||||
3,
|
||||
8,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowGingerbread,
|
||||
),
|
||||
420,
|
||||
16.0,
|
||||
61,
|
||||
3.9,
|
||||
327,
|
||||
7,
|
||||
16,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowJellyBean,
|
||||
),
|
||||
439,
|
||||
0.0,
|
||||
106,
|
||||
0.0,
|
||||
50,
|
||||
0,
|
||||
0,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowLollipop,
|
||||
),
|
||||
456,
|
||||
0.2,
|
||||
110,
|
||||
0.0,
|
||||
38,
|
||||
0,
|
||||
2,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowHoneycomb,
|
||||
),
|
||||
472,
|
||||
3.2,
|
||||
99,
|
||||
6.5,
|
||||
562,
|
||||
0,
|
||||
45,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowDonut,
|
||||
),
|
||||
516,
|
||||
25.0,
|
||||
63,
|
||||
4.9,
|
||||
326,
|
||||
2,
|
||||
22,
|
||||
),
|
||||
_Dessert(
|
||||
localizations.dataTableRowWithHoney(
|
||||
localizations.dataTableRowApplePie,
|
||||
),
|
||||
582,
|
||||
26.0,
|
||||
77,
|
||||
7.0,
|
||||
54,
|
||||
12,
|
||||
6,
|
||||
),
|
||||
];
|
||||
}
|
||||
|
||||
final BuildContext context;
|
||||
List<_Dessert> _desserts;
|
||||
|
||||
void _sort<T>(Comparable<T> getField(_Dessert d), bool ascending) {
|
||||
_desserts.sort((a, b) {
|
||||
final Comparable<T> aValue = getField(a);
|
||||
final Comparable<T> bValue = getField(b);
|
||||
return ascending
|
||||
? Comparable.compare(aValue, bValue)
|
||||
: Comparable.compare(bValue, aValue);
|
||||
});
|
||||
notifyListeners();
|
||||
}
|
||||
|
||||
int _selectedCount = 0;
|
||||
|
||||
@override
|
||||
DataRow getRow(int index) {
|
||||
final format = NumberFormat.decimalPercentPattern(
|
||||
locale: GalleryOptions.of(context).locale.toString(),
|
||||
decimalDigits: 0,
|
||||
);
|
||||
assert(index >= 0);
|
||||
if (index >= _desserts.length) return null;
|
||||
final _Dessert dessert = _desserts[index];
|
||||
return DataRow.byIndex(
|
||||
index: index,
|
||||
selected: dessert.selected,
|
||||
onSelectChanged: (value) {
|
||||
if (dessert.selected != value) {
|
||||
_selectedCount += value ? 1 : -1;
|
||||
assert(_selectedCount >= 0);
|
||||
dessert.selected = value;
|
||||
notifyListeners();
|
||||
}
|
||||
},
|
||||
cells: [
|
||||
DataCell(Text(dessert.name)),
|
||||
DataCell(Text('${dessert.calories}')),
|
||||
DataCell(Text(dessert.fat.toStringAsFixed(1))),
|
||||
DataCell(Text('${dessert.carbs}')),
|
||||
DataCell(Text(dessert.protein.toStringAsFixed(1))),
|
||||
DataCell(Text('${dessert.sodium}')),
|
||||
DataCell(Text('${format.format(dessert.calcium / 100)}')),
|
||||
DataCell(Text('${format.format(dessert.iron / 100)}')),
|
||||
],
|
||||
);
|
||||
}
|
||||
|
||||
@override
|
||||
int get rowCount => _desserts.length;
|
||||
|
||||
@override
|
||||
bool get isRowCountApproximate => false;
|
||||
|
||||
@override
|
||||
int get selectedRowCount => _selectedCount;
|
||||
|
||||
void _selectAll(bool checked) {
|
||||
for (final _Dessert dessert in _desserts) {
|
||||
dessert.selected = checked;
|
||||
}
|
||||
_selectedCount = checked ? _desserts.length : 0;
|
||||
notifyListeners();
|
||||
}
|
||||
}
|
||||
|
||||
// END
|
||||
Loading…
Reference in new issue