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Rody Davis
2026-01-15 14:38:46 -08:00
parent ef86e3ab6a
commit 6869cf47e5
5253 changed files with 726695 additions and 34 deletions
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deprecated/data_tables/lib/ui/mobile_paged_listview.dart
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import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart' as cupertino;
class PagedListView extends StatefulWidget {
const PagedListView({
required this.rows,
required this.columns,
this.showSelect = true,
this.showSort = true,
this.mobileItemBuilder,
this.selectedActions,
this.actions,
this.onSelectAll,
this.rowsPerPage,
this.loadNext,
this.sortColumnIndex,
this.sortAscending,
this.onRefresh,
this.isRowCountApproximate = false,
this.initialScrollOffset = 0,
this.noItems,
this.isLoading,
this.slivers,
});
final double initialScrollOffset;
final List<DataColumn> columns;
final List<DataRow> rows;
final IndexedWidgetBuilder? mobileItemBuilder;
final bool showSelect, showSort;
final List<Widget>? actions;
final List<Widget>? selectedActions;
final ValueChanged<bool?>? onSelectAll;
final int? rowsPerPage;
final VoidCallback? loadNext;
final int? sortColumnIndex;
final bool? sortAscending;
final Widget? noItems, isLoading;
final RefreshCallback? onRefresh;
final bool isRowCountApproximate;
final List<Widget>? slivers;
@override
_NativePagedListViewState createState() => _NativePagedListViewState();
}
class _NativePagedListViewState extends State<PagedListView> {
ScrollController? _controller;
PersistentBottomSheetController? _sortController;
@override
void initState() {
_controller = ScrollController(
initialScrollOffset: widget.initialScrollOffset * 40.0,
);
_controller!.addListener(_scrollListener);
super.initState();
}
@override
void didUpdateWidget(covariant PagedListView oldWidget) {
if (oldWidget.showSelect != widget.showSelect) if (mounted) setState(() {});
if (oldWidget.showSort != widget.showSort) if (mounted) setState(() {});
if (oldWidget.rows != widget.rows) if (mounted) setState(() {});
if (oldWidget.columns != widget.columns) if (mounted) setState(() {});
super.didUpdateWidget(oldWidget);
}
void _scrollListener() {
if (_controller!.offset >= _controller!.position.maxScrollExtent && !_controller!.position.outOfRange) {
// Bottom of List
widget.loadNext!();
}
if (_controller!.offset <= _controller!.position.minScrollExtent && !_controller!.position.outOfRange) {
// Top of List
}
}
@override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
Expanded(
child: CustomScrollView(
controller: _controller,
slivers: <Widget>[
...?widget.slivers,
if (widget.onRefresh == null) SliverToBoxAdapter(child: Container()) else cupertino.CupertinoSliverRefreshControl(onRefresh: widget.onRefresh),
if (widget.isLoading != null && widget.rows.isEmpty)
Center(child: widget.isLoading)
else
widget.noItems != null && widget.rows.isEmpty
? Center(child: widget.noItems)
: SliverList(
delegate: SliverChildBuilderDelegate(
widget.mobileItemBuilder ??
(context, index) {
return ExpansionTile(
leading: widget.showSelect
? Checkbox(
value: widget.rows[index].selected,
onChanged: (bool? value) {
setState(() {
widget.rows[index].onSelectChanged!(value);
});
},
)
: null,
title: widget.rows[index].cells.first.child,
children: _buildMobileChildren(index),
);
},
childCount: widget.rows.length,
),
)
],
),
),
if (widget.showSelect || widget.showSort)
SafeArea(
top: false,
child: Container(
decoration: BoxDecoration(
border: Border(
top: cupertino.BorderSide(color: Colors.grey[200]!),
)),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: rowsSelected ? selectedActions : actions,
),
),
),
],
);
}
List<Widget> get actions => [
if (widget.showSelect)
IconButton(
icon: const Icon(Icons.select_all),
onPressed: () {
setState(() {
widget.onSelectAll!(true);
});
},
),
if (widget.showSort)
IconButton(
tooltip: "Sort Items",
icon: const Icon(Icons.sort_by_alpha),
onPressed: () {
if (_sortController != null) {
_sortController!.close();
debugPrint("Close...");
return;
}
_sortController = Scaffold.of(context).showBottomSheet((context) {
final List<DataColumn> _cols = widget.columns.where((c) => c.onSort != null).toList();
final bool? _sortAsc = widget.sortAscending;
final int? selectedIndex = widget.sortColumnIndex;
return Container(
decoration: BoxDecoration(
color: Theme.of(context).brightness == Brightness.dark ? Colors.black38 : Colors.grey[200],
borderRadius: const BorderRadius.only(topLeft: Radius.circular(20), topRight: Radius.circular(20))),
child: SingleChildScrollView(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
for (var i = 0; i < _cols.length; i++) ...[
ListTile(
dense: true,
selected: selectedIndex == i,
title: _cols[i].label,
subtitle: Text(widget.sortAscending! ? 'Ascending' : 'Descending'),
leading: Radio<int>(
groupValue: selectedIndex,
onChanged: (value) {
_sortController!.setState!(() {
_cols[i].onSort!(i, _sortAsc!);
});
},
value: i,
),
trailing: IconButton(
icon: Icon(_sortAsc! ? Icons.arrow_upward : Icons.arrow_downward),
onPressed: () {
_sortController!.setState!(() {
_cols[i].onSort!(i, !_sortAsc);
});
},
),
onTap: () {
if (selectedIndex == i) {
_sortController!.setState!(() {
_cols[i].onSort!(i, !_sortAsc);
});
} else {
_sortController!.setState!(() {
_cols[i].onSort!(i, _sortAsc);
});
}
},
),
],
Container(
padding: EdgeInsets.only(top: 10.0, bottom: 10.0),
child: Container(
child: TextButton(
child: Text(
"Close",
style: Theme.of(context).textTheme.headline5,
),
onPressed: () {
_sortController!.close();
},
),
),
),
],
),
),
);
});
_sortController!.closed.whenComplete(() {
debugPrint("Done");
_sortController = null;
});
},
),
Container(
child: widget.onRefresh == null
? null
: IconButton(
icon: Icon(Icons.refresh),
onPressed: widget.onRefresh,
),
),
...widget.actions ?? [],
];
List<Widget> get selectedActions => [
IconButton(
icon: Icon(Icons.clear_all),
onPressed: () {
setState(() {
widget.onSelectAll!(false);
});
},
),
...widget.selectedActions ?? []
];
bool get rowsSelected => _selectedRowCount != 0;
int get _selectedRowCount => widget.rows.where((d) => d.selected).toSet().toList().length;
List<Widget> _buildMobileChildren(int index) {
List<Widget> _children = [];
int i = 0;
for (var _cell in widget.rows[index].cells) {
_children.add(ListTile(
title: widget.columns[i].label,
subtitle: _cell.child,
));
i++;
}
return _children;
}
}
deprecated/data_tables/lib/ui/stateless_datatable.dart
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import 'dart:ui';
import 'package:flutter/gestures.dart' show DragStartBehavior;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';
class StatelessDataTable extends StatelessWidget {
StatelessDataTable({
Key? key,
this.header,
this.actions,
required this.columns,
required this.rows,
this.sortColumnIndex,
this.showCheckboxColumn = true,
this.sortAscending = true,
this.totalItems,
this.onSelectAll,
this.firstRowIndex = 0,
this.onPageChanged,
this.shrinkWrap = false,
this.selectedActions,
this.rowCountApproximate = false,
this.rowsPerPage = defaultRowsPerPage,
this.handlePrevious,
this.handleNext,
this.availableRowsPerPage = const <int>[defaultRowsPerPage, defaultRowsPerPage * 2, defaultRowsPerPage * 5, defaultRowsPerPage * 10],
this.onRowsPerPageChanged,
this.dragStartBehavior = DragStartBehavior.down,
}) : assert(columns.isNotEmpty),
assert(sortColumnIndex == null || (sortColumnIndex >= 0 && sortColumnIndex < columns.length)),
assert(rowsPerPage > 0),
assert(() {
if (onRowsPerPageChanged != null) {
assert(availableRowsPerPage.contains(rowsPerPage));
}
return true;
}()),
super(key: key);
final VoidCallback? handleNext, handlePrevious;
final Widget? header;
final bool showCheckboxColumn;
final List<Widget>? actions, selectedActions;
final List<DataColumn> columns;
final List<DataRow> rows;
final bool shrinkWrap;
final int? sortColumnIndex;
final int? totalItems;
final bool sortAscending;
final ValueSetter<bool?>? onSelectAll;
final ValueChanged<int?>? onPageChanged;
final int rowsPerPage;
static const int defaultRowsPerPage = 10;
final List<int> availableRowsPerPage;
final ValueChanged<int?>? onRowsPerPageChanged;
final DragStartBehavior dragStartBehavior;
final int firstRowIndex;
final bool rowCountApproximate;
final Map<int, DataRow> _rows = <int, DataRow>{};
DataRow _getBlankRowFor(int index) => DataRow.byIndex(index: index, cells: columns.map<DataCell>((DataColumn column) => DataCell.empty).toList());
DataRow _getProgressIndicatorRowFor(int index) {
bool haveProgressIndicator = false;
final List<DataCell> cells = columns.map<DataCell>((DataColumn column) {
if (!column.numeric) {
haveProgressIndicator = true;
return const DataCell(CircularProgressIndicator());
}
return DataCell.empty;
}).toList();
if (!haveProgressIndicator) {
haveProgressIndicator = true;
cells[0] = const DataCell(CircularProgressIndicator());
}
return DataRow.byIndex(index: index, cells: cells);
}
List<DataRow> _getRows(int firstRowIndex, int rowsPerPage) {
final List<DataRow> result = <DataRow>[];
final int nextPageFirstRowIndex = firstRowIndex + rowsPerPage;
bool haveProgressIndicator = false;
for (int index = firstRowIndex; index < nextPageFirstRowIndex; index += 1) {
DataRow? row;
if (index < rows.length || rowCountApproximate) {
try {
row = _rows.putIfAbsent(index, () => rows[index]);
} catch (e) {
print("Row not found => $e");
}
if (row == null && !haveProgressIndicator) {
row ??= _getProgressIndicatorRowFor(index);
haveProgressIndicator = true;
}
row ??= _getBlankRowFor(index);
result.add(row);
}
}
//show no data
if (result.isEmpty) {
var cells = columns.map<DataCell>((DataColumn column) => DataCell.empty).toList();
cells[cells.length ~/ 2] = const DataCell(Text('no data'));
result.add(DataRow.byIndex(index: 0, cells: cells));
}
return result;
}
final GlobalKey _tableKey = GlobalKey();
int get _selectedRowCount => rows.where((d) => d.selected).toSet().toList().length;
@override
Widget build(BuildContext context) {
assert(debugCheckHasMaterialLocalizations(context));
final ThemeData themeData = Theme.of(context);
final MaterialLocalizations localizations = MaterialLocalizations.of(context);
final List<Widget> headerWidgets = <Widget>[];
double startPadding = 24;
if (_selectedRowCount == 0) {
if (header != null) {
headerWidgets.add(Expanded(child: header!));
if (header is ButtonBar) {
startPadding = 12.0;
}
}
} else {
headerWidgets.add(Expanded(
child: Text(localizations.selectedRowCountTitle(_selectedRowCount)),
));
}
if (selectedActions != null && _selectedRowCount != 0) {
headerWidgets.addAll(selectedActions!.map<Widget>((Widget action) {
return Padding(
padding: const EdgeInsetsDirectional.only(start: 24.0 - 8.0 * 2.0),
child: action,
);
}).toList());
} else if (actions != null) {
headerWidgets.addAll(actions!.map<Widget>((Widget action) {
return Padding(
padding: const EdgeInsetsDirectional.only(start: 24.0 - 8.0 * 2.0),
child: action,
);
}).toList());
}
final TextStyle? footerTextStyle = themeData.textTheme.caption;
final List<Widget> footerWidgets = <Widget>[];
if (onRowsPerPageChanged != null) {
final List<Widget> _footerChildren =
availableRowsPerPage.where((int value) => value <= rows.length || value == rowsPerPage).map<DropdownMenuItem<int>>((int value) {
return DropdownMenuItem<int>(value: value, child: Text('$value'));
}).toList();
footerWidgets.addAll(<Widget>[
Container(width: 14),
Text(localizations.rowsPerPageTitle),
ConstrainedBox(
constraints: const BoxConstraints(minWidth: 64),
child: Align(
alignment: AlignmentDirectional.centerEnd,
child: DropdownButtonHideUnderline(
child: DropdownButton<int>(
items: _footerChildren as List<DropdownMenuItem<int>>?,
value: rowsPerPage,
onChanged: onRowsPerPageChanged,
style: footerTextStyle,
),
),
),
),
]);
}
footerWidgets.addAll(<Widget>[
Container(width: 32),
Text(localizations.pageRowsInfoTitle(firstRowIndex + 1, firstRowIndex + rowsPerPage, totalItems ?? rows.length, rowCountApproximate)),
Container(width: 32),
IconButton(
icon: const Icon(Icons.chevron_left),
padding: EdgeInsets.zero,
tooltip: localizations.previousPageTooltip,
onPressed: firstRowIndex <= 0 ? null : handlePrevious),
Container(width: 24),
IconButton(
icon: const Icon(Icons.chevron_right),
padding: EdgeInsets.zero,
tooltip: localizations.nextPageTooltip,
onPressed: (!rowCountApproximate && (firstRowIndex + rowsPerPage >= (totalItems ?? rows.length))) ? null : handleNext),
Container(width: 14),
]);
if (shrinkWrap) {
return SafeArea(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
if (showCheckboxColumn)
Semantics(
container: true,
child: DefaultTextStyle(
style: _selectedRowCount > 0
? themeData.textTheme.subtitle1!.copyWith(color: themeData.colorScheme.secondary)
: themeData.textTheme.headline6!.copyWith(fontWeight: FontWeight.w400),
child: IconTheme.merge(
data: const IconThemeData(opacity: 0.54),
child: ButtonTheme(
child: Ink(
height: 64,
color: _selectedRowCount > 0 ? themeData.secondaryHeaderColor : null,
child: Padding(
padding: EdgeInsetsDirectional.only(start: startPadding, end: 14),
child: Row(mainAxisAlignment: MainAxisAlignment.end, children: headerWidgets),
),
),
),
),
),
),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
dragStartBehavior: dragStartBehavior,
child: Builder(
builder: (BuildContext context) {
final rows = _getRows(firstRowIndex, rowsPerPage);
return DataTable(
showCheckboxColumn: showCheckboxColumn,
key: _tableKey,
columns: columns,
sortColumnIndex: sortColumnIndex,
sortAscending: sortAscending,
onSelectAll: onSelectAll,
rows: rows,
);
},
),
),
DefaultTextStyle(
style: footerTextStyle!,
child: IconTheme.merge(
data: const IconThemeData(opacity: 0.54),
child: Container(
height: 56,
child: SingleChildScrollView(
dragStartBehavior: dragStartBehavior,
scrollDirection: Axis.horizontal,
reverse: true,
child: Row(
children: footerWidgets,
),
),
),
),
),
],
),
);
}
return SafeArea(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
if (showCheckboxColumn)
Semantics(
container: true,
child: DefaultTextStyle(
style: _selectedRowCount > 0
? themeData.textTheme.subtitle1!.copyWith(color: themeData.colorScheme.secondary)
: themeData.textTheme.headline6!.copyWith(fontWeight: FontWeight.w400),
child: IconTheme.merge(
data: const IconThemeData(opacity: 0.54),
child: ButtonTheme(
child: Ink(
height: 64,
color: _selectedRowCount > 0 ? themeData.secondaryHeaderColor : null,
child: Padding(
padding: EdgeInsetsDirectional.only(start: startPadding, end: 14),
child: Row(mainAxisAlignment: MainAxisAlignment.end, children: headerWidgets),
),
),
),
),
),
),
Expanded(
flex: 8,
child: ScrollConfiguration(
behavior: CustomScrollBehavior(),
child: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: DataTable(
key: _tableKey,
columns: columns,
sortColumnIndex: sortColumnIndex,
sortAscending: sortAscending,
onSelectAll: onSelectAll,
rows: _getRows(firstRowIndex, rowsPerPage)),
),
),
),
),
DefaultTextStyle(
style: footerTextStyle!,
child: IconTheme.merge(
data: const IconThemeData(opacity: 0.54),
child: SizedBox(
height: 56,
child: SingleChildScrollView(
dragStartBehavior: dragStartBehavior,
scrollDirection: Axis.horizontal,
reverse: true,
child: Row(
children: footerWidgets,
),
),
),
),
),
],
),
);
}
}
class CustomScrollBehavior extends MaterialScrollBehavior {
@override
Set<PointerDeviceKind> get dragDevices => {
PointerDeviceKind.touch,
PointerDeviceKind.mouse,
};
}