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112 lines
3.2 KiB
Dart
112 lines
3.2 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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enum TabsDemoStyle {
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iconsAndText,
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iconsOnly,
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textOnly
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}
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class ScrollableTabsDemo extends StatefulWidget {
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static const String routeName = '/scrollable-tabs';
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@override
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ScrollableTabsDemoState createState() => new ScrollableTabsDemoState();
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}
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class ScrollableTabsDemoState extends State<ScrollableTabsDemo> {
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final List<IconData> icons = <IconData>[
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Icons.event,
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Icons.home,
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Icons.android,
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Icons.alarm,
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Icons.face,
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Icons.language,
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];
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final Map<IconData, String> labels = <IconData, String>{
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Icons.event: 'EVENT',
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Icons.home: 'HOME',
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Icons.android: 'ANDROID',
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Icons.alarm: 'ALARM',
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Icons.face: 'FACE',
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Icons.language: 'LANGUAGE',
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};
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TabsDemoStyle _demoStyle = TabsDemoStyle.iconsAndText;
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void changeDemoStyle(TabsDemoStyle style) {
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setState(() {
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_demoStyle = style;
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});
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}
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@override
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Widget build(BuildContext context) {
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final Color iconColor = Theme.of(context).accentColor;
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return new TabBarSelection<IconData>(
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values: icons,
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child: new Scaffold(
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appBar: new AppBar(
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title: new Text('Scrollable tabs'),
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actions: <Widget>[
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new PopupMenuButton<TabsDemoStyle>(
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onSelected: changeDemoStyle,
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itemBuilder: (BuildContext context) => <PopupMenuItem<TabsDemoStyle>>[
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.iconsAndText,
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child: new Text('Icons and text')
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),
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.iconsOnly,
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child: new Text('Icons only')
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),
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new PopupMenuItem<TabsDemoStyle>(
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value: TabsDemoStyle.textOnly,
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child: new Text('Text only')
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),
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]
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)
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],
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tabBar: new TabBar<IconData>(
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isScrollable: true,
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labels: new Map<IconData, TabLabel>.fromIterable(
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icons,
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value: (IconData icon) {
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switch(_demoStyle) {
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case TabsDemoStyle.iconsAndText:
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return new TabLabel(text: labels[icon], icon: icon);
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case TabsDemoStyle.iconsOnly:
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return new TabLabel(icon: icon);
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case TabsDemoStyle.textOnly:
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return new TabLabel(text: labels[icon]);
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}
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}
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)
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)
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),
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body: new TabBarView<IconData>(
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children: icons.map((IconData icon) {
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return new Container(
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key: new ObjectKey(icon),
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padding: const EdgeInsets.all(12.0),
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child:new Card(
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child: new Center(
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child: new Icon(
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icon: icon,
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color: iconColor,
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size: 128.0
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)
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)
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)
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);
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}).toList()
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)
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)
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);
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}
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}
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