chips_choice 3.0.1 
chips_choice: ^3.0.1 copied to clipboard
widgetarian.comLite version of smart_select package, zero dependencies, an easy way to provide a single or multiple choice chips.
import 'package:flutter/material.dart';
import 'package:chips_choice/chips_choice.dart';
import 'package:theme_patrol/theme_patrol.dart';
import 'package:animated_checkmark/animated_checkmark.dart';
import 'package:dio/dio.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return ThemePatrol(
light: ThemeData(
brightness: Brightness.light,
colorScheme: ColorScheme.fromSeed(
brightness: Brightness.light,
seedColor: Colors.red,
),
// materialTapTargetSize: MaterialTapTargetSize.padded,
),
dark: ThemeData(
brightness: Brightness.dark,
colorScheme: ColorScheme.fromSeed(
brightness: Brightness.dark,
seedColor: Colors.red,
),
visualDensity: VisualDensity.adaptivePlatformDensity,
// materialTapTargetSize: MaterialTapTargetSize.padded,
),
builder: (context, theme) {
return MaterialApp(
title: 'Chips Choice',
theme: theme.lightData,
darkTheme: theme.darkData,
themeMode: theme.mode,
home: const MyHomePage(),
);
},
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key}) : super(key: key);
@override
MyHomePageState createState() => MyHomePageState();
}
class MyHomePageState extends State<MyHomePage> {
// single choice value
int tag = 3;
// multiple choice value
List<String> tags = ['Education'];
// list of string options
List<String> options = [
'News',
'Entertainment',
'Politics',
'Automotive',
'Sports',
'Education',
'Fashion',
'Travel',
'Food',
'Tech',
'Science',
];
String? user;
final usersMemoizer = C2ChoiceMemoizer<String>();
// Create a global key that uniquely identifies the Form widget
// and allows validation of the form.
//
// Note: This is a GlobalKey<FormState>,
// not a GlobalKey<MyCustomFormState>.
final formKey = GlobalKey<FormState>();
List<String> formValue = [];
Future<List<C2Choice<String>>> getUsers() async {
try {
String url =
"https://randomuser.me/api/?inc=gender,name,nat,picture,email&results=25";
Response res = await Dio().get(url);
return C2Choice.listFrom<String, dynamic>(
source: res.data['results'],
value: (index, item) => item['email'],
label: (index, item) =>
item['name']['first'] + ' ' + item['name']['last'],
avatarImage: (index, item) =>
NetworkImage(item['picture']['thumbnail']),
meta: (index, item) => item,
)..insert(0, const C2Choice<String>(value: 'all', label: 'All'));
} on DioError catch (e) {
throw ErrorDescription(e.message);
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Flutter ChipsChoice'),
actions: <Widget>[
ThemeConsumer(builder: ((context, theme) {
return IconButton(
onPressed: () => theme.toggleMode(),
icon: Icon(theme.modeIcon),
);
})),
IconButton(
icon: const Icon(Icons.help_outline),
onPressed: () => _about(context),
),
],
),
body: Padding(
padding: const EdgeInsets.all(5.0),
child: Row(
children: [
Expanded(
child: ListView(
addAutomaticKeepAlives: true,
children: <Widget>[
Content(
title: 'Scrollable List Single Choice',
child: ChipsChoice<int>.single(
value: tag,
onChanged: (val) => setState(() => tag = val),
choiceItems: C2Choice.listFrom<int, String>(
source: options,
value: (i, v) => i,
label: (i, v) => v,
tooltip: (i, v) => v,
),
choiceCheckmark: true,
choiceStyle: C2ChipStyle.filled(
selectedStyle: const C2ChipStyle(
borderRadius: BorderRadius.all(
Radius.circular(25),
),
),
),
),
),
Content(
title: 'Scrollable List Multiple Choice',
child: ChipsChoice<String>.multiple(
value: tags,
onChanged: (val) => setState(() => tags = val),
choiceItems: C2Choice.listFrom<String, String>(
source: options,
value: (i, v) => v,
label: (i, v) => v,
tooltip: (i, v) => v,
),
choiceCheckmark: true,
choiceStyle: C2ChipStyle.outlined(),
),
),
Content(
title:
'Wrapped List Single Choice, Custom Border Radius, Leading and Trailing Widget',
child: ChipsChoice<int>.single(
value: tag,
onChanged: (val) => setState(() => tag = val),
choiceItems: C2Choice.listFrom<int, String>(
source: options,
value: (i, v) => i,
label: (i, v) => v,
tooltip: (i, v) => v,
delete: (i, v) => () {
setState(() => options.removeAt(i));
},
),
choiceStyle: C2ChipStyle.toned(
borderRadius: const BorderRadius.all(
Radius.circular(5),
),
),
leading: IconButton(
tooltip: 'Add Choice',
icon: const Icon(Icons.add_box_rounded),
onPressed: () => setState(
() => options.add('Opt #${options.length + 1}'),
),
),
trailing: IconButton(
tooltip: 'Remove Choice',
icon: const Icon(Icons.remove_circle),
onPressed: () => setState(() => options.removeLast()),
),
wrapped: true,
),
),
Content(
title:
'Wrapped List Multiple Choice and Right to Left Text Direction',
child: ChipsChoice<String>.multiple(
value: tags,
onChanged: (val) => setState(() => tags = val),
choiceItems: C2Choice.listFrom<String, String>(
source: options,
value: (i, v) => v,
label: (i, v) => v,
tooltip: (i, v) => v,
),
choiceCheckmark: true,
textDirection: TextDirection.rtl,
wrapped: true,
),
),
Content(
title: 'Disabled and Hidden Choice Item',
child: ChipsChoice<int>.single(
value: tag,
onChanged: (val) => setState(() => tag = val),
choiceItems: C2Choice.listFrom<int, String>(
source: options,
value: (i, v) => i,
label: (i, v) => v,
tooltip: (i, v) => v,
disabled: (i, v) => [0, 2, 5].contains(i),
hidden: (i, v) => i > 9,
),
wrapped: true,
),
),
Content(
title: 'Individual Style Choice Item',
child: ChipsChoice<String>.multiple(
value: tags,
onChanged: (val) => setState(() => tags = val),
choiceItems: C2Choice.listFrom<String, String>(
source: options,
value: (i, v) => v,
label: (i, v) => v,
tooltip: (i, v) => v,
style: (i, v) {
if (['Science', 'Politics', 'News', 'Tech']
.contains(v)) {
return C2ChipStyle.toned(
borderRadius: const BorderRadius.all(
Radius.circular(5),
),
);
}
return null;
},
),
choiceStyle: C2ChipStyle.filled(),
wrapped: true,
),
),
Content(
title: 'Without Checkmark and Custom Border Shape',
child: ChipsChoice<int>.single(
value: tag,
onChanged: (val) => setState(() => tag = val),
choiceItems: C2Choice.listFrom<int, String>(
source: options,
value: (i, v) => i,
label: (i, v) => v,
tooltip: (i, v) => v,
)..insert(
0, const C2Choice<int>(value: -1, label: 'All')),
choiceStyle: C2ChipStyle.filled(
foregroundStyle: const TextStyle(fontSize: 20),
borderRadius:
const BorderRadius.all(Radius.circular(5)),
selectedStyle: C2ChipStyle.filled(),
),
),
),
Content(
title: 'Async Choice Items and Brightness Dark',
child: FutureBuilder<List<C2Choice<String>>>(
initialData: const [],
future: usersMemoizer.runOnce(getUsers),
builder: (context, snapshot) {
if (snapshot.connectionState ==
ConnectionState.waiting) {
return const Padding(
padding: EdgeInsets.all(20),
child: Center(
child: SizedBox(
width: 20,
height: 20,
child: CircularProgressIndicator(
strokeWidth: 2,
),
),
),
);
} else {
if (!snapshot.hasError) {
return ChipsChoice<String>.single(
value: user,
onChanged: (val) => setState(() => user = val),
choiceItems: snapshot.data ?? [],
choiceStyle: C2ChipStyle.filled(
selectedStyle: const C2ChipStyle(
backgroundColor: Colors.green,
),
),
);
} else {
return Container(
padding: const EdgeInsets.all(25),
child: Text(
snapshot.error.toString(),
style: const TextStyle(color: Colors.red),
),
);
}
}
},
),
),
Content(
title: 'Async Choice Items Using choiceLoader',
child: ChipsChoice<String>.single(
value: user,
onChanged: (val) => setState(() => user = val),
choiceLoader: getUsers,
choiceStyle: C2ChipStyle.filled(
selectedStyle: const C2ChipStyle(
backgroundColor: Colors.green,
),
),
choiceLeadingBuilder: (data, i) {
if (data.meta == null) return null;
return CircleAvatar(
maxRadius: 12,
backgroundImage: data.avatarImage,
);
},
),
),
Content(
title: 'Works with FormField and Validator',
child: Form(
key: formKey,
child: Column(
children: [
FormField<List<String>>(
autovalidateMode: AutovalidateMode.always,
initialValue: formValue,
onSaved: (val) =>
setState(() => formValue = val ?? []),
validator: (value) {
if (value?.isEmpty ?? value == null) {
return 'Please select some categories';
}
if (value!.length > 5) {
return "Can't select more than 5 categories";
}
return null;
},
builder: (state) {
return Column(
children: <Widget>[
Container(
alignment: Alignment.centerLeft,
child: ChipsChoice<String>.multiple(
value: state.value ?? [],
onChanged: (val) => state.didChange(val),
choiceItems:
C2Choice.listFrom<String, String>(
source: options,
value: (i, v) => v.toLowerCase(),
label: (i, v) => v,
tooltip: (i, v) => v,
),
choiceStyle: C2ChipStyle.outlined(
borderWidth: 2,
selectedStyle: const C2ChipStyle(
borderColor: Colors.green,
foregroundColor: Colors.green,
),
),
wrapped: true,
),
),
Container(
padding: const EdgeInsets.fromLTRB(
15, 0, 15, 10),
alignment: Alignment.centerLeft,
child: Text(
state.errorText ??
'${state.value!.length}/5 selected',
style: TextStyle(
color: state.hasError
? Colors.redAccent
: Colors.green),
),
)
],
);
},
),
const Divider(),
Padding(
padding: const EdgeInsets.fromLTRB(15, 0, 15, 10),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
ElevatedButton(
onPressed: () {
// Validate returns true if the form is valid, or false otherwise.
if (formKey.currentState!.validate()) {
// If the form is valid, save the value.
formKey.currentState!.save();
}
},
child: const Text('Submit'),
),
const SizedBox(
width: 15,
),
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
const Text('Submitted Value:'),
const SizedBox(height: 5),
Text(formValue.toString())
],
),
),
],
),
),
],
),
),
),
Content(
title: 'Custom Choice Widget',
child: ChipsChoice<String>.multiple(
value: tags,
onChanged: (val) => setState(() => tags = val),
choiceItems: C2Choice.listFrom<String, String>(
source: options,
value: (i, v) => v,
label: (i, v) => v,
),
choiceBuilder: (item, i) {
return CustomChip(
label: item.label,
width: 70,
height: 100,
selected: item.selected,
onSelect: item.select!,
);
},
),
),
],
),
),
SizedBox(
width: 100,
child: Content(
title: 'Vertical Direction',
child: ChipsChoice<int>.single(
value: tag,
onChanged: (val) => setState(() => tag = val),
choiceItems: C2Choice.listFrom<int, String>(
source: options,
value: (i, v) => i,
label: (i, v) => v,
),
padding: const EdgeInsets.fromLTRB(10, 5, 10, 5),
choiceBuilder: (item, i) {
return CustomChip(
label: item.label,
width: double.infinity,
height: 90,
color: Colors.redAccent,
margin: const EdgeInsets.fromLTRB(0, 5, 0, 5),
selected: item.selected,
onSelect: item.select!,
);
},
direction: Axis.vertical,
),
),
),
],
),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
class CustomChip extends StatelessWidget {
final String label;
final Color? color;
final double? width;
final double? height;
final EdgeInsetsGeometry? margin;
final bool selected;
final Function(bool selected) onSelect;
const CustomChip({
Key? key,
required this.label,
this.color,
this.width,
this.height,
this.margin,
this.selected = false,
required this.onSelect,
}) : super(key: key);
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return AnimatedContainer(
width: width,
height: height,
margin: margin ?? const EdgeInsets.symmetric(vertical: 15, horizontal: 5),
duration: const Duration(milliseconds: 300),
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: selected
? (color ?? Colors.green)
: theme.unselectedWidgetColor.withOpacity(.12),
borderRadius: BorderRadius.all(Radius.circular(selected ? 25 : 10)),
border: Border.all(
color: selected
? (color ?? Colors.green)
: theme.colorScheme.onSurface.withOpacity(.38),
width: 1,
),
),
child: InkWell(
borderRadius: BorderRadius.all(Radius.circular(selected ? 25 : 10)),
onTap: () => onSelect(!selected),
child: Stack(
alignment: Alignment.center,
children: <Widget>[
AnimatedCheckmark(
active: selected,
color: Colors.white,
size: const Size.square(32),
weight: 5,
duration: const Duration(milliseconds: 400),
),
Positioned(
left: 9,
right: 9,
bottom: 7,
child: Text(
label,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: TextStyle(
color: selected ? Colors.white : theme.colorScheme.onSurface,
),
),
),
],
),
),
);
}
}
class Content extends StatefulWidget {
final String title;
final Widget child;
const Content({
Key? key,
required this.title,
required this.child,
}) : super(key: key);
@override
ContentState createState() => ContentState();
}
class ContentState extends State<Content> {
@override
Widget build(BuildContext context) {
return Card(
elevation: 2,
margin: const EdgeInsets.all(5),
clipBehavior: Clip.antiAliasWithSaveLayer,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
width: double.infinity,
padding: const EdgeInsets.all(15),
// color: Colors.blueGrey[50],
child: Text(
widget.title,
style: const TextStyle(
// color: Colors.blueGrey,
fontWeight: FontWeight.w500,
),
),
),
Flexible(fit: FlexFit.loose, child: widget.child),
],
),
);
}
}
void _about(BuildContext context) {
showDialog(
context: context,
builder: (_) => Dialog(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
ListTile(
title: Text(
'chips_choice',
style: Theme.of(context)
.textTheme
.headlineSmall!
.copyWith(color: Colors.black87),
),
subtitle: const Text('by davigmacode'),
trailing: IconButton(
icon: const Icon(Icons.close),
onPressed: () => Navigator.pop(context),
),
),
Flexible(
fit: FlexFit.loose,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 15),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(
'Easy way to provide a single or multiple choice chips.',
style: Theme.of(context)
.textTheme
.bodyMedium!
.copyWith(color: Colors.black54),
),
Container(height: 15),
],
),
),
),
],
),
),
);
}Metadata
326
likes
150
points
9.55k
downloads
Publisher
Weekly Downloads
Metadata
Lite version of smart_select package, zero dependencies, an easy way to provide a single or multiple choice chips.
Repository (GitHub)
View/report issues
Documentation
License
BSD-3-Clause (license)
