| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'dart:ui' show SemanticsFlag, SemanticsAction; |
| |
| import 'package:flutter_test/flutter_test.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/widgets.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter/physics.dart'; |
| |
| import '../rendering/mock_canvas.dart'; |
| import '../rendering/recording_canvas.dart'; |
| import '../widgets/semantics_tester.dart'; |
| |
| Widget boilerplate({ Widget child, TextDirection textDirection: TextDirection.ltr }) { |
| return new Localizations( |
| locale: const Locale('en', 'US'), |
| delegates: <LocalizationsDelegate<dynamic>>[ |
| DefaultMaterialLocalizations.delegate, |
| DefaultWidgetsLocalizations.delegate, |
| ], |
| child: new Directionality( |
| textDirection: textDirection, |
| child: new Material( |
| child: child, |
| ), |
| ), |
| ); |
| } |
| |
| class StateMarker extends StatefulWidget { |
| const StateMarker({ Key key, this.child }) : super(key: key); |
| |
| final Widget child; |
| |
| @override |
| StateMarkerState createState() => new StateMarkerState(); |
| } |
| |
| class StateMarkerState extends State<StateMarker> { |
| String marker; |
| |
| @override |
| Widget build(BuildContext context) { |
| if (widget.child != null) |
| return widget.child; |
| return new Container(); |
| } |
| } |
| |
| Widget buildFrame({ |
| Key tabBarKey, |
| List<String> tabs, |
| String value, |
| bool isScrollable: false, |
| Color indicatorColor, |
| }) { |
| return boilerplate( |
| child: new DefaultTabController( |
| initialIndex: tabs.indexOf(value), |
| length: tabs.length, |
| child: new TabBar( |
| key: tabBarKey, |
| tabs: tabs.map((String tab) => new Tab(text: tab)).toList(), |
| isScrollable: isScrollable, |
| indicatorColor: indicatorColor, |
| ), |
| ), |
| ); |
| } |
| |
| typedef Widget TabControllerFrameBuilder(BuildContext context, TabController controller); |
| |
| class TabControllerFrame extends StatefulWidget { |
| const TabControllerFrame({ this.length, this.initialIndex: 0, this.builder }); |
| |
| final int length; |
| final int initialIndex; |
| final TabControllerFrameBuilder builder; |
| |
| @override |
| TabControllerFrameState createState() => new TabControllerFrameState(); |
| } |
| |
| class TabControllerFrameState extends State<TabControllerFrame> with SingleTickerProviderStateMixin { |
| TabController _controller; |
| |
| @override |
| void initState() { |
| super.initState(); |
| _controller = new TabController( |
| vsync: this, |
| length: widget.length, |
| initialIndex: widget.initialIndex, |
| ); |
| } |
| |
| @override |
| void dispose() { |
| _controller.dispose(); |
| super.dispose(); |
| } |
| |
| @override |
| Widget build(BuildContext context) { |
| return widget.builder(context, _controller); |
| } |
| } |
| |
| Widget buildLeftRightApp({ List<String> tabs, String value }) { |
| return new MaterialApp( |
| theme: new ThemeData(platform: TargetPlatform.android), |
| home: new DefaultTabController( |
| initialIndex: tabs.indexOf(value), |
| length: tabs.length, |
| child: new Scaffold( |
| appBar: new AppBar( |
| title: const Text('tabs'), |
| bottom: new TabBar( |
| tabs: tabs.map((String tab) => new Tab(text: tab)).toList(), |
| ), |
| ), |
| body: const TabBarView( |
| children: const <Widget>[ |
| const Center(child: const Text('LEFT CHILD')), |
| const Center(child: const Text('RIGHT CHILD')) |
| ] |
| ) |
| ) |
| ) |
| ); |
| } |
| |
| class TabIndicatorRecordingCanvas extends TestRecordingCanvas { |
| TabIndicatorRecordingCanvas(this.indicatorColor); |
| |
| final Color indicatorColor; |
| Rect indicatorRect; |
| |
| @override |
| void drawLine(Offset p1, Offset p2, Paint paint) { |
| // Assuming that the indicatorWeight is 2.0, the default. |
| const double indicatorWeight = 2.0; |
| if (paint.color == indicatorColor) |
| indicatorRect = new Rect.fromPoints(p1, p2).inflate(indicatorWeight / 2.0); |
| } |
| } |
| |
| class TestScrollPhysics extends ScrollPhysics { |
| const TestScrollPhysics({ ScrollPhysics parent }) : super(parent: parent); |
| |
| @override |
| TestScrollPhysics applyTo(ScrollPhysics ancestor) { |
| return new TestScrollPhysics(parent: buildParent(ancestor)); |
| } |
| |
| static final SpringDescription _kDefaultSpring = new SpringDescription.withDampingRatio( |
| mass: 0.5, |
| stiffness: 500.0, |
| ratio: 1.1, |
| ); |
| |
| @override |
| SpringDescription get spring => _kDefaultSpring; |
| } |
| |
| void main() { |
| setUp(() { |
| debugResetSemanticsIdCounter(); |
| }); |
| |
| testWidgets('TabBar tap selects tab', (WidgetTester tester) async { |
| final List<String> tabs = <String>['A', 'B', 'C']; |
| |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false)); |
| expect(find.text('A'), findsOneWidget); |
| expect(find.text('B'), findsOneWidget); |
| expect(find.text('C'), findsOneWidget); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('A'))); |
| expect(controller, isNotNull); |
| expect(controller.index, 2); |
| expect(controller.previousIndex, 2); |
| |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false)); |
| await tester.tap(find.text('B')); |
| await tester.pump(); |
| expect(controller.indexIsChanging, true); |
| await tester.pump(const Duration(seconds: 1)); // finish the animation |
| expect(controller.index, 1); |
| expect(controller.previousIndex, 2); |
| expect(controller.indexIsChanging, false); |
| |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false)); |
| await tester.tap(find.text('C')); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| expect(controller.index, 2); |
| expect(controller.previousIndex, 1); |
| |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: false)); |
| await tester.tap(find.text('A')); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| expect(controller.index, 0); |
| expect(controller.previousIndex, 2); |
| }); |
| |
| testWidgets('Scrollable TabBar tap selects tab', (WidgetTester tester) async { |
| final List<String> tabs = <String>['A', 'B', 'C']; |
| |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'C', isScrollable: true)); |
| expect(find.text('A'), findsOneWidget); |
| expect(find.text('B'), findsOneWidget); |
| expect(find.text('C'), findsOneWidget); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('A'))); |
| expect(controller.index, 2); |
| expect(controller.previousIndex, 2); |
| |
| await tester.tap(find.text('C')); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 2); |
| |
| await tester.tap(find.text('B')); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 1); |
| |
| await tester.tap(find.text('A')); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 0); |
| }); |
| |
| testWidgets('Scrollable TabBar tap centers selected tab', (WidgetTester tester) async { |
| final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGG', 'HHHHHH', 'IIIIII', 'JJJJJJ', 'KKKKKK', 'LLLLLL']; |
| const Key tabBarKey = const Key('TabBar'); |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAAAA', isScrollable: true, tabBarKey: tabBarKey)); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('AAAAAA'))); |
| expect(controller, isNotNull); |
| expect(controller.index, 0); |
| |
| expect(tester.getSize(find.byKey(tabBarKey)).width, equals(800.0)); |
| // The center of the FFFFFF item is to the right of the TabBar's center |
| expect(tester.getCenter(find.text('FFFFFF')).dx, greaterThan(401.0)); |
| |
| await tester.tap(find.text('FFFFFF')); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 5); |
| // The center of the FFFFFF item is now at the TabBar's center |
| expect(tester.getCenter(find.text('FFFFFF')).dx, closeTo(400.0, 1.0)); |
| }); |
| |
| |
| testWidgets('TabBar can be scrolled independent of the selection', (WidgetTester tester) async { |
| final List<String> tabs = <String>['AAAA', 'BBBB', 'CCCC', 'DDDD', 'EEEE', 'FFFF', 'GGGG', 'HHHH', 'IIII', 'JJJJ', 'KKKK', 'LLLL']; |
| const Key tabBarKey = const Key('TabBar'); |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'AAAA', isScrollable: true, tabBarKey: tabBarKey)); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('AAAA'))); |
| expect(controller, isNotNull); |
| expect(controller.index, 0); |
| |
| // Fling-scroll the TabBar to the left |
| expect(tester.getCenter(find.text('HHHH')).dx, lessThan(700.0)); |
| await tester.fling(find.byKey(tabBarKey), const Offset(-200.0, 0.0), 10000.0); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(tester.getCenter(find.text('HHHH')).dx, lessThan(500.0)); |
| |
| // Scrolling the TabBar doesn't change the selection |
| expect(controller.index, 0); |
| }); |
| |
| testWidgets('TabBarView maintains state', (WidgetTester tester) async { |
| final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE']; |
| String value = tabs[0]; |
| |
| Widget builder() { |
| return boilerplate( |
| child: new DefaultTabController( |
| initialIndex: tabs.indexOf(value), |
| length: tabs.length, |
| child: new TabBarView( |
| children: tabs.map((String name) { |
| return new StateMarker( |
| child: new Text(name) |
| ); |
| }).toList() |
| ), |
| ), |
| ); |
| } |
| |
| StateMarkerState findStateMarkerState(String name) { |
| return tester.state(find.widgetWithText(StateMarker, name)); |
| } |
| |
| await tester.pumpWidget(builder()); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('AAAAAA'))); |
| |
| TestGesture gesture = await tester.startGesture(tester.getCenter(find.text(tabs[0]))); |
| await gesture.moveBy(const Offset(-600.0, 0.0)); |
| await tester.pump(); |
| expect(value, equals(tabs[0])); |
| findStateMarkerState(tabs[1]).marker = 'marked'; |
| await gesture.up(); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| value = tabs[controller.index]; |
| expect(value, equals(tabs[1])); |
| await tester.pumpWidget(builder()); |
| expect(findStateMarkerState(tabs[1]).marker, equals('marked')); |
| |
| // Move to the third tab. |
| |
| gesture = await tester.startGesture(tester.getCenter(find.text(tabs[1]))); |
| await gesture.moveBy(const Offset(-600.0, 0.0)); |
| await gesture.up(); |
| await tester.pump(); |
| expect(findStateMarkerState(tabs[1]).marker, equals('marked')); |
| await tester.pump(const Duration(seconds: 1)); |
| value = tabs[controller.index]; |
| expect(value, equals(tabs[2])); |
| await tester.pumpWidget(builder()); |
| |
| // The state is now gone. |
| |
| expect(find.text(tabs[1]), findsNothing); |
| |
| // Move back to the second tab. |
| |
| gesture = await tester.startGesture(tester.getCenter(find.text(tabs[2]))); |
| await gesture.moveBy(const Offset(600.0, 0.0)); |
| await tester.pump(); |
| final StateMarkerState markerState = findStateMarkerState(tabs[1]); |
| expect(markerState.marker, isNull); |
| markerState.marker = 'marked'; |
| await gesture.up(); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| value = tabs[controller.index]; |
| expect(value, equals(tabs[1])); |
| await tester.pumpWidget(builder()); |
| expect(findStateMarkerState(tabs[1]).marker, equals('marked')); |
| }); |
| |
| testWidgets('TabBar left/right fling', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| expect(find.text('LEFT'), findsOneWidget); |
| expect(find.text('RIGHT'), findsOneWidget); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| |
| final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT'))); |
| expect(controller.index, 0); |
| |
| // Fling to the left, switch from the 'LEFT' tab to the 'RIGHT' |
| Offset flingStart = tester.getCenter(find.text('LEFT CHILD')); |
| await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 1); |
| expect(find.text('LEFT CHILD'), findsNothing); |
| expect(find.text('RIGHT CHILD'), findsOneWidget); |
| |
| // Fling to the right, switch back to the 'LEFT' tab |
| flingStart = tester.getCenter(find.text('RIGHT CHILD')); |
| await tester.flingFrom(flingStart, const Offset(200.0, 0.0), 10000.0); |
| await tester.pumpAndSettle(); |
| expect(controller.index, 0); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| }); |
| |
| testWidgets('TabBar left/right fling reverse (1)', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| expect(find.text('LEFT'), findsOneWidget); |
| expect(find.text('RIGHT'), findsOneWidget); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| |
| final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT'))); |
| expect(controller.index, 0); |
| |
| final Offset flingStart = tester.getCenter(find.text('LEFT CHILD')); |
| await tester.flingFrom(flingStart, const Offset(200.0, 0.0), 10000.0); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(controller.index, 0); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| }); |
| |
| testWidgets('TabBar left/right fling reverse (2)', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| expect(find.text('LEFT'), findsOneWidget); |
| expect(find.text('RIGHT'), findsOneWidget); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| |
| final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT'))); |
| expect(controller.index, 0); |
| |
| final Offset flingStart = tester.getCenter(find.text('LEFT CHILD')); |
| await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0); |
| await tester.pump(); |
| // this is similar to a test above, but that one does many more pumps |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(controller.index, 1); |
| expect(find.text('LEFT CHILD'), findsNothing); |
| expect(find.text('RIGHT CHILD'), findsOneWidget); |
| }); |
| |
| // A regression test for https://github.com/flutter/flutter/issues/5095 |
| testWidgets('TabBar left/right fling reverse (2)', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| expect(find.text('LEFT'), findsOneWidget); |
| expect(find.text('RIGHT'), findsOneWidget); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| |
| final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT'))); |
| expect(controller.index, 0); |
| |
| final Offset flingStart = tester.getCenter(find.text('LEFT CHILD')); |
| final TestGesture gesture = await tester.startGesture(flingStart); |
| for (int index = 0; index > 50; index += 1) { |
| await gesture.moveBy(const Offset(-10.0, 0.0)); |
| await tester.pump(const Duration(milliseconds: 1)); |
| } |
| // End the fling by reversing direction. This should cause not cause |
| // a change to the selected tab, everything should just settle back to |
| // to where it started. |
| for (int index = 0; index > 50; index += 1) { |
| await gesture.moveBy(const Offset(10.0, 0.0)); |
| await tester.pump(const Duration(milliseconds: 1)); |
| } |
| await gesture.up(); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(controller.index, 0); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| }); |
| |
| // A regression test for https://github.com/flutter/flutter/issues/7133 |
| testWidgets('TabBar fling velocity', (WidgetTester tester) async { |
| final List<String> tabs = <String>['AAAAAA', 'BBBBBB', 'CCCCCC', 'DDDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGG', 'HHHHHH', 'IIIIII', 'JJJJJJ', 'KKKKKK', 'LLLLLL']; |
| int index = 0; |
| |
| await tester.pumpWidget( |
| new MaterialApp( |
| home: new Align( |
| alignment: Alignment.topLeft, |
| child: new SizedBox( |
| width: 300.0, |
| height: 200.0, |
| child: new DefaultTabController( |
| length: tabs.length, |
| child: new Scaffold( |
| appBar: new AppBar( |
| title: const Text('tabs'), |
| bottom: new TabBar( |
| isScrollable: true, |
| tabs: tabs.map((String tab) => new Tab(text: tab)).toList(), |
| ), |
| ), |
| body: new TabBarView( |
| children: tabs.map((String name) => new Text('${index++}')).toList(), |
| ), |
| ), |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| // After a small slow fling to the left, we expect the second item to still be visible. |
| await tester.fling(find.text('AAAAAA'), const Offset(-25.0, 0.0), 100.0); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| final RenderBox box = tester.renderObject(find.text('BBBBBB')); |
| expect(box.localToGlobal(Offset.zero).dx, greaterThan(0.0)); |
| }); |
| |
| testWidgets('TabController change notification', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| final TabController controller = DefaultTabController.of(tester.element(find.text('LEFT'))); |
| |
| expect(controller, isNotNull); |
| expect(controller.index, 0); |
| |
| String value; |
| controller.addListener(() { |
| value = tabs[controller.index]; |
| }); |
| |
| await tester.tap(find.text('RIGHT')); |
| await tester.pumpAndSettle(); |
| expect(value, 'RIGHT'); |
| |
| await tester.tap(find.text('LEFT')); |
| await tester.pumpAndSettle(); |
| expect(value, 'LEFT'); |
| |
| final Offset leftFlingStart = tester.getCenter(find.text('LEFT CHILD')); |
| await tester.flingFrom(leftFlingStart, const Offset(-200.0, 0.0), 10000.0); |
| await tester.pumpAndSettle(); |
| expect(value, 'RIGHT'); |
| |
| final Offset rightFlingStart = tester.getCenter(find.text('RIGHT CHILD')); |
| await tester.flingFrom(rightFlingStart, const Offset(200.0, 0.0), 10000.0); |
| await tester.pumpAndSettle(); |
| expect(value, 'LEFT'); |
| }); |
| |
| testWidgets('Explicit TabController', (WidgetTester tester) async { |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| TabController tabController; |
| |
| Widget buildTabControllerFrame(BuildContext context, TabController controller) { |
| tabController = controller; |
| return new MaterialApp( |
| theme: new ThemeData(platform: TargetPlatform.android), |
| home: new Scaffold( |
| appBar: new AppBar( |
| title: const Text('tabs'), |
| bottom: new TabBar( |
| controller: controller, |
| tabs: tabs.map((String tab) => new Tab(text: tab)).toList(), |
| ), |
| ), |
| body: new TabBarView( |
| controller: controller, |
| children: const <Widget>[ |
| const Center(child: const Text('LEFT CHILD')), |
| const Center(child: const Text('RIGHT CHILD')) |
| ] |
| ), |
| ), |
| ); |
| } |
| |
| await tester.pumpWidget(new TabControllerFrame( |
| builder: buildTabControllerFrame, |
| length: tabs.length, |
| initialIndex: 1, |
| )); |
| |
| expect(find.text('LEFT'), findsOneWidget); |
| expect(find.text('RIGHT'), findsOneWidget); |
| expect(find.text('LEFT CHILD'), findsNothing); |
| expect(find.text('RIGHT CHILD'), findsOneWidget); |
| expect(tabController.index, 1); |
| expect(tabController.previousIndex, 1); |
| expect(tabController.indexIsChanging, false); |
| expect(tabController.animation.value, 1.0); |
| expect(tabController.animation.status, AnimationStatus.completed); |
| |
| tabController.index = 0; |
| await tester.pump(const Duration(milliseconds: 500)); |
| await tester.pump(const Duration(milliseconds: 500)); |
| expect(find.text('LEFT CHILD'), findsOneWidget); |
| expect(find.text('RIGHT CHILD'), findsNothing); |
| |
| tabController.index = 1; |
| await tester.pump(const Duration(milliseconds: 500)); |
| await tester.pump(const Duration(milliseconds: 500)); |
| expect(find.text('LEFT CHILD'), findsNothing); |
| expect(find.text('RIGHT CHILD'), findsOneWidget); |
| }); |
| |
| testWidgets('TabController listener resets index', (WidgetTester tester) async { |
| // This is a regression test for the scenario brought up here |
| // https://github.com/flutter/flutter/pull/7387#pullrequestreview-15630946 |
| |
| final List<String> tabs = <String>['A', 'B', 'C']; |
| TabController tabController; |
| |
| Widget buildTabControllerFrame(BuildContext context, TabController controller) { |
| tabController = controller; |
| return new MaterialApp( |
| theme: new ThemeData(platform: TargetPlatform.android), |
| home: new Scaffold( |
| appBar: new AppBar( |
| title: const Text('tabs'), |
| bottom: new TabBar( |
| controller: controller, |
| tabs: tabs.map((String tab) => new Tab(text: tab)).toList(), |
| ), |
| ), |
| body: new TabBarView( |
| controller: controller, |
| children: const <Widget>[ |
| const Center(child: const Text('CHILD A')), |
| const Center(child: const Text('CHILD B')), |
| const Center(child: const Text('CHILD C')), |
| ] |
| ), |
| ), |
| ); |
| } |
| |
| await tester.pumpWidget(new TabControllerFrame( |
| builder: buildTabControllerFrame, |
| length: tabs.length, |
| )); |
| |
| tabController.animation.addListener(() { |
| if (tabController.animation.status == AnimationStatus.forward) |
| tabController.index = 2; |
| expect(tabController.indexIsChanging, true); |
| }); |
| |
| expect(tabController.index, 0); |
| expect(tabController.indexIsChanging, false); |
| |
| tabController.animateTo(1, duration: const Duration(milliseconds: 200), curve: Curves.linear); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| expect(tabController.index, 2); |
| expect(tabController.indexIsChanging, false); |
| }); |
| |
| testWidgets('TabBarView child disposed during animation', (WidgetTester tester) async { |
| // This is a regression test for the scenario brought up here |
| // https://github.com/flutter/flutter/pull/7387#discussion_r95089191x |
| |
| final List<String> tabs = <String>['LEFT', 'RIGHT']; |
| await tester.pumpWidget(buildLeftRightApp(tabs: tabs, value: 'LEFT')); |
| |
| // Fling to the left, switch from the 'LEFT' tab to the 'RIGHT' |
| final Offset flingStart = tester.getCenter(find.text('LEFT CHILD')); |
| await tester.flingFrom(flingStart, const Offset(-200.0, 0.0), 10000.0); |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| }); |
| |
| testWidgets('TabBar unselectedLabelColor control test', (WidgetTester tester) async { |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| ); |
| |
| Color firstColor; |
| Color secondColor; |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new TabBar( |
| controller: controller, |
| labelColor: Colors.green[500], |
| unselectedLabelColor: Colors.blue[500], |
| tabs: <Widget>[ |
| new Builder( |
| builder: (BuildContext context) { |
| firstColor = IconTheme.of(context).color; |
| return const Text('First'); |
| } |
| ), |
| new Builder( |
| builder: (BuildContext context) { |
| secondColor = IconTheme.of(context).color; |
| return const Text('Second'); |
| } |
| ), |
| ], |
| ), |
| ), |
| ); |
| |
| expect(firstColor, equals(Colors.green[500])); |
| expect(secondColor, equals(Colors.blue[500])); |
| }); |
| |
| testWidgets('TabBarView page left and right test', (WidgetTester tester) async { |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new TabBarView( |
| controller: controller, |
| children: const <Widget>[ const Text('First'), const Text('Second') ], |
| ), |
| ), |
| ); |
| |
| expect(controller.index, equals(0)); |
| |
| TestGesture gesture = await tester.startGesture(const Offset(100.0, 100.0)); |
| expect(controller.index, equals(0)); |
| |
| // Drag to the left and right, by less than the TabBarView's width. |
| // The selected index (controller.index) should not change. |
| await gesture.moveBy(const Offset(-100.0, 0.0)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(controller.index, equals(0)); |
| expect(find.text('First'), findsOneWidget); |
| expect(find.text('Second'), findsNothing); |
| |
| // Drag more than the TabBarView's width to the right. This forces |
| // the selected index to change to 1. |
| await gesture.moveBy(const Offset(-500.0, 0.0)); |
| await gesture.up(); |
| await tester.pump(); // start the scroll animation |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(controller.index, equals(1)); |
| expect(find.text('First'), findsNothing); |
| expect(find.text('Second'), findsOneWidget); |
| |
| gesture = await tester.startGesture(const Offset(100.0, 100.0)); |
| expect(controller.index, equals(1)); |
| |
| // Drag to the left and right, by less than the TabBarView's width. |
| // The selected index (controller.index) should not change. |
| await gesture.moveBy(const Offset(-100.0, 0.0)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(controller.index, equals(1)); |
| expect(find.text('First'), findsNothing); |
| expect(find.text('Second'), findsOneWidget); |
| |
| // Drag more than the TabBarView's width to the left. This forces |
| // the selected index to change back to 0. |
| await gesture.moveBy(const Offset(500.0, 0.0)); |
| await gesture.up(); |
| await tester.pump(); // start the scroll animation |
| await tester.pump(const Duration(seconds: 1)); // finish the scroll animation |
| expect(controller.index, equals(0)); |
| expect(find.text('First'), findsOneWidget); |
| expect(find.text('Second'), findsNothing); |
| }); |
| |
| testWidgets('TabBar tap animates the selection indicator', (WidgetTester tester) async { |
| // This is a regression test for https://github.com/flutter/flutter/issues/7479 |
| |
| final List<String> tabs = <String>['A', 'B']; |
| |
| const Color indicatorColor = const Color(0xFFFF0000); |
| await tester.pumpWidget(buildFrame(tabs: tabs, value: 'A', indicatorColor: indicatorColor)); |
| |
| final RenderBox box = tester.renderObject(find.byType(TabBar)); |
| final TabIndicatorRecordingCanvas canvas = new TabIndicatorRecordingCanvas(indicatorColor); |
| final TestRecordingPaintingContext context = new TestRecordingPaintingContext(canvas); |
| |
| box.paint(context, Offset.zero); |
| final Rect indicatorRect0 = canvas.indicatorRect; |
| expect(indicatorRect0.left, 0.0); |
| expect(indicatorRect0.width, 400.0); |
| expect(indicatorRect0.height, 2.0); |
| |
| await tester.tap(find.text('B')); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 50)); |
| box.paint(context, Offset.zero); |
| final Rect indicatorRect1 = canvas.indicatorRect; |
| expect(indicatorRect1.left, greaterThan(indicatorRect0.left)); |
| expect(indicatorRect1.right, lessThan(800.0)); |
| expect(indicatorRect1.height, 2.0); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| box.paint(context, Offset.zero); |
| final Rect indicatorRect2 = canvas.indicatorRect; |
| expect(indicatorRect2.left, 400.0); |
| expect(indicatorRect2.width, 400.0); |
| expect(indicatorRect2.height, 2.0); |
| }); |
| |
| testWidgets('TabBarView child disposed during animation', (WidgetTester tester) async { |
| // This is a regression test for this patch: |
| // https://github.com/flutter/flutter/pull/9015 |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| ); |
| |
| Widget buildFrame() { |
| return boilerplate( |
| child: new TabBar( |
| key: new UniqueKey(), |
| controller: controller, |
| tabs: const <Widget>[ const Text('A'), const Text('B') ], |
| ), |
| ); |
| } |
| |
| await tester.pumpWidget(buildFrame()); |
| |
| // The original TabBar will be disposed. The controller should no |
| // longer have any listeners from the original TabBar. |
| await tester.pumpWidget(buildFrame()); |
| |
| controller.index = 1; |
| await tester.pump(const Duration(milliseconds: 300)); |
| }); |
| |
| testWidgets('TabBarView scrolls end very VERY close to a new page', (WidgetTester tester) async { |
| // This is a regression test for https://github.com/flutter/flutter/issues/9375 |
| |
| final TabController tabController = new TabController( |
| vsync: const TestVSync(), |
| initialIndex: 1, |
| length: 3, |
| ); |
| |
| await tester.pumpWidget(new Directionality( |
| textDirection: TextDirection.ltr, |
| child: new SizedBox.expand( |
| child: new Center( |
| child: new SizedBox( |
| width: 400.0, |
| height: 400.0, |
| child: new TabBarView( |
| controller: tabController, |
| children: const <Widget>[ |
| const Center(child: const Text('0')), |
| const Center(child: const Text('1')), |
| const Center(child: const Text('2')), |
| ], |
| ), |
| ), |
| ), |
| ), |
| )); |
| |
| expect(tabController.index, 1); |
| |
| final PageView pageView = tester.widget(find.byType(PageView)); |
| final PageController pageController = pageView.controller; |
| final ScrollPosition position = pageController.position; |
| |
| // The TabBarView's page width is 400, so page 0 is at scroll offset 0.0, |
| // page 1 is at 400.0, page 2 is at 800.0. |
| |
| expect(position.pixels, 400.0); |
| |
| // Not close enough to switch to page 2 |
| pageController.jumpTo(800.0 - 1.25 * position.physics.tolerance.distance); |
| expect(tabController.index, 1); |
| |
| // Close enough to switch to page 2 |
| pageController.jumpTo(800.0 - 0.75 * position.physics.tolerance.distance); |
| expect(tabController.index, 2); |
| }); |
| |
| testWidgets('TabBarView scrolls end very close to a new page with custom physics', (WidgetTester tester) async { |
| final TabController tabController = new TabController( |
| vsync: const TestVSync(), |
| initialIndex: 1, |
| length: 3, |
| ); |
| |
| await tester.pumpWidget(new Directionality( |
| textDirection: TextDirection.ltr, |
| child: new SizedBox.expand( |
| child: new Center( |
| child: new SizedBox( |
| width: 400.0, |
| height: 400.0, |
| child: new TabBarView( |
| controller: tabController, |
| physics: const TestScrollPhysics(), |
| children: const <Widget>[ |
| const Center(child: const Text('0')), |
| const Center(child: const Text('1')), |
| const Center(child: const Text('2')), |
| ], |
| ), |
| ), |
| ), |
| ), |
| )); |
| |
| expect(tabController.index, 1); |
| |
| final PageView pageView = tester.widget(find.byType(PageView)); |
| final PageController pageController = pageView.controller; |
| final ScrollPosition position = pageController.position; |
| |
| // The TabBarView's page width is 400, so page 0 is at scroll offset 0.0, |
| // page 1 is at 400.0, page 2 is at 800.0. |
| |
| expect(position.pixels, 400.0); |
| |
| // Not close enough to switch to page 2 |
| pageController.jumpTo(800.0 - 1.25 * position.physics.tolerance.distance); |
| expect(tabController.index, 1); |
| |
| // Close enough to switch to page 2 |
| pageController.jumpTo(800.0 - 0.75 * position.physics.tolerance.distance); |
| expect(tabController.index, 2); |
| }); |
| |
| testWidgets('Scrollable TabBar with a non-zero TabController initialIndex', (WidgetTester tester) async { |
| // This is a regression test for https://github.com/flutter/flutter/issues/9374 |
| |
| final List<Tab> tabs = new List<Tab>.generate(20, (int index) { |
| return new Tab(text: 'TAB #$index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| initialIndex: tabs.length - 1, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new TabBar( |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ); |
| |
| // The initialIndex tab should be visible and right justified |
| expect(find.text('TAB #19'), findsOneWidget); |
| |
| // Tabs have a minimum width of 72.0 and 'TAB #19' is wider than |
| // that. Tabs are padded horizontally with kTabLabelPadding. |
| final double tabRight = 800.0 - kTabLabelPadding.right; |
| |
| expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB #19')).dx, tabRight); |
| }); |
| |
| testWidgets('TabBar with indicatorWeight, indicatorPadding (LTR)', (WidgetTester tester) async { |
| const Color indicatorColor = const Color(0xFF00FF00); |
| const double indicatorWeight = 8.0; |
| const double padLeft = 8.0; |
| const double padRight = 4.0; |
| |
| final List<Widget> tabs = new List<Widget>.generate(4, (int index) { |
| return new Tab(text: 'Tab $index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| indicatorWeight: indicatorWeight, |
| indicatorColor: indicatorColor, |
| indicatorPadding: const EdgeInsets.only(left: padLeft, right: padRight), |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0) |
| |
| final double indicatorY = 54.0 - indicatorWeight / 2.0; |
| double indicatorLeft = padLeft + indicatorWeight / 2.0; |
| double indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0); |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| |
| // Select tab 3 |
| controller.index = 3; |
| await tester.pumpAndSettle(); |
| |
| indicatorLeft = 600.0 + padLeft + indicatorWeight / 2.0; |
| indicatorRight = 800.0 - (padRight + indicatorWeight / 2.0); |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('TabBar with indicatorWeight, indicatorPadding (RTL)', (WidgetTester tester) async { |
| const Color indicatorColor = const Color(0xFF00FF00); |
| const double indicatorWeight = 8.0; |
| const double padLeft = 8.0; |
| const double padRight = 4.0; |
| |
| final List<Widget> tabs = new List<Widget>.generate(4, (int index) { |
| return new Tab(text: 'Tab $index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| textDirection: TextDirection.rtl, |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| indicatorWeight: indicatorWeight, |
| indicatorColor: indicatorColor, |
| indicatorPadding: const EdgeInsets.only(left: padLeft, right: padRight), |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0) |
| expect(tabBarBox.size.width, 800.0); |
| |
| final double indicatorY = 54.0 - indicatorWeight / 2.0; |
| double indicatorLeft = 600.0 + padLeft + indicatorWeight / 2.0; |
| double indicatorRight = 800.0 - padRight - indicatorWeight / 2.0; |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| |
| // Select tab 3 |
| controller.index = 3; |
| await tester.pumpAndSettle(); |
| |
| indicatorLeft = padLeft + indicatorWeight / 2.0; |
| indicatorRight = 200.0 - padRight - indicatorWeight / 2.0; |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('TabBar changes indicator attributes', (WidgetTester tester) async { |
| final List<Widget> tabs = new List<Widget>.generate(4, (int index) { |
| return new Tab(text: 'Tab $index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| Color indicatorColor = const Color(0xFF00FF00); |
| double indicatorWeight = 8.0; |
| double padLeft = 8.0; |
| double padRight = 4.0; |
| |
| Widget buildFrame() { |
| return boilerplate( |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| indicatorWeight: indicatorWeight, |
| indicatorColor: indicatorColor, |
| indicatorPadding: new EdgeInsets.only(left: padLeft, right: padRight), |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ); |
| } |
| |
| await tester.pumpWidget(buildFrame()); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| expect(tabBarBox.size.height, 54.0); // 54 = _kTabHeight(46) + indicatorWeight(8.0) |
| |
| double indicatorY = 54.0 - indicatorWeight / 2.0; |
| double indicatorLeft = padLeft + indicatorWeight / 2.0; |
| double indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0); |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| |
| indicatorColor = const Color(0xFF0000FF); |
| indicatorWeight = 4.0; |
| padLeft = 4.0; |
| padRight = 8.0; |
| |
| await tester.pumpWidget(buildFrame()); |
| |
| expect(tabBarBox.size.height, 50.0); // 54 = _kTabHeight(46) + indicatorWeight(4.0) |
| |
| indicatorY = 50.0 - indicatorWeight / 2.0; |
| indicatorLeft = padLeft + indicatorWeight / 2.0; |
| indicatorRight = 200.0 - (padRight + indicatorWeight / 2.0); |
| |
| expect(tabBarBox, paints..line( |
| color: indicatorColor, |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('TabBar with directional indicatorPadding (LTR)', (WidgetTester tester) async { |
| final List<Widget> tabs = <Widget>[ |
| new SizedBox(key: new UniqueKey(), width: 130.0, height: 30.0), |
| new SizedBox(key: new UniqueKey(), width: 140.0, height: 40.0), |
| new SizedBox(key: new UniqueKey(), width: 150.0, height: 50.0), |
| ]; |
| |
| const double indicatorWeight = 2.0; // the default |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| indicatorPadding: const EdgeInsetsDirectional.only(start: 100.0), |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height |
| expect(tabBarBox.size.height, tabBarHeight); |
| |
| // Tab0 width = 130, height = 30 |
| double tabLeft = kTabLabelPadding.left; |
| double tabRight = tabLeft + 130.0; |
| double tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0; |
| double tabBottom = tabTop + 30.0; |
| Rect tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[0].key)), tabRect); |
| |
| |
| // Tab1 width = 140, height = 40 |
| tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left; |
| tabRight = tabLeft + 140.0; |
| tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0; |
| tabBottom = tabTop + 40.0; |
| tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[1].key)), tabRect); |
| |
| |
| // Tab2 width = 150, height = 50 |
| tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left; |
| tabRight = tabLeft + 150.0; |
| tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0; |
| tabBottom = tabTop + 50.0; |
| tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[2].key)), tabRect); |
| |
| // Tab 0 selected, indicator padding resolves to left: 100.0 |
| final double indicatorLeft = 100.0 + indicatorWeight / 2.0; |
| final double indicatorRight = 130.0 + kTabLabelPadding.horizontal - indicatorWeight / 2.0; |
| final double indicatorY = tabBottom + indicatorWeight / 2.0; |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('TabBar with directional indicatorPadding (RTL)', (WidgetTester tester) async { |
| final List<Widget> tabs = <Widget>[ |
| new SizedBox(key: new UniqueKey(), width: 130.0, height: 30.0), |
| new SizedBox(key: new UniqueKey(), width: 140.0, height: 40.0), |
| new SizedBox(key: new UniqueKey(), width: 150.0, height: 50.0), |
| ]; |
| |
| const double indicatorWeight = 2.0; // the default |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| textDirection: TextDirection.rtl, |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| indicatorPadding: const EdgeInsetsDirectional.only(start: 100.0), |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| const double tabBarHeight = 50.0 + indicatorWeight; // 50 = max tab height |
| expect(tabBarBox.size.height, tabBarHeight); |
| |
| // Tab2 width = 150, height = 50 |
| double tabLeft = kTabLabelPadding.left; |
| double tabRight = tabLeft + 150.0; |
| double tabTop = (tabBarHeight - indicatorWeight - 50.0) / 2.0; |
| double tabBottom = tabTop + 50.0; |
| Rect tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[2].key)), tabRect); |
| |
| // Tab1 width = 140, height = 40 |
| tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left; |
| tabRight = tabLeft + 140.0; |
| tabTop = (tabBarHeight - indicatorWeight - 40.0) / 2.0; |
| tabBottom = tabTop + 40.0; |
| tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[1].key)), tabRect); |
| |
| // Tab0 width = 130, height = 30 |
| tabLeft = tabRight + kTabLabelPadding.right + kTabLabelPadding.left; |
| tabRight = tabLeft + 130.0; |
| tabTop = (tabBarHeight - indicatorWeight - 30.0) / 2.0; |
| tabBottom = tabTop + 30.0; |
| tabRect = new Rect.fromLTRB(tabLeft, tabTop, tabRight, tabBottom); |
| expect(tester.getRect(find.byKey(tabs[0].key)), tabRect); |
| |
| // Tab 0 selected, indicator padding resolves to right: 100.0 |
| final double indicatorLeft = tabLeft - kTabLabelPadding.left + indicatorWeight / 2.0; |
| final double indicatorRight = tabRight + kTabLabelPadding.left - indicatorWeight / 2.0 - 100.0; |
| final double indicatorY = 50.0 + indicatorWeight / 2.0; |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('Overflowing RTL tab bar', (WidgetTester tester) async { |
| final List<Widget> tabs = new List<Widget>.filled(100, |
| // For convenience padded width of each tab will equal 100: |
| // 76 + kTabLabelPadding.horizontal(24) |
| new SizedBox(key: new UniqueKey(), width: 76.0, height: 40.0), |
| ); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| ); |
| |
| const double indicatorWeight = 2.0; // the default |
| |
| await tester.pumpWidget( |
| boilerplate( |
| textDirection: TextDirection.rtl, |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| const double tabBarHeight = 40.0 + indicatorWeight; // 40 = tab height |
| expect(tabBarBox.size.height, tabBarHeight); |
| |
| // Tab 0 out of 100 selected |
| double indicatorLeft = 99.0 * 100.0 + indicatorWeight / 2.0; |
| double indicatorRight = 100.0 * 100.0 - indicatorWeight / 2.0; |
| final double indicatorY = 40.0 + indicatorWeight / 2.0; |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| |
| controller.animateTo(tabs.length - 1, duration: const Duration(seconds: 1), curve: Curves.linear); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 500)); |
| |
| // The x coordinates of p1 and p2 were derived empirically, not analytically. |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(2476.0, indicatorY), |
| p2: new Offset(2574.0, indicatorY), |
| )); |
| |
| await tester.pump(const Duration(milliseconds: 501)); |
| |
| // Tab 99 out of 100 selected, appears on the far left because RTL |
| indicatorLeft = indicatorWeight / 2.0; |
| indicatorRight = 100.0 - indicatorWeight / 2.0; |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| testWidgets('correct semantics', (WidgetTester tester) async { |
| final SemanticsTester semantics = new SemanticsTester(tester); |
| |
| final List<Tab> tabs = new List<Tab>.generate(2, (int index) { |
| return new Tab(text: 'TAB #$index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| initialIndex: 0, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Semantics( |
| container: true, |
| child: new TabBar( |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final TestSemantics expectedSemantics = new TestSemantics.root( |
| children: <TestSemantics>[ |
| new TestSemantics.rootChild( |
| id: 1, |
| rect: TestSemantics.fullScreen, |
| children: <TestSemantics>[ |
| new TestSemantics( |
| id: 2, |
| rect: TestSemantics.fullScreen, |
| children: <TestSemantics>[ |
| new TestSemantics( |
| id: 3, |
| actions: SemanticsAction.tap.index, |
| flags: SemanticsFlag.isSelected.index, |
| label: 'TAB #0\nTab 1 of 2', |
| rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight), |
| transform: new Matrix4.translationValues(0.0, 276.0, 0.0), |
| ), |
| new TestSemantics( |
| id: 4, |
| actions: SemanticsAction.tap.index, |
| label: 'TAB #1\nTab 2 of 2', |
| rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight), |
| transform: new Matrix4.translationValues(108.0, 276.0, 0.0), |
| ), |
| ] |
| ) |
| ], |
| ), |
| ], |
| ); |
| |
| expect(semantics, hasSemantics(expectedSemantics)); |
| |
| semantics.dispose(); |
| }); |
| |
| testWidgets('correct scrolling semantics', (WidgetTester tester) async { |
| final SemanticsTester semantics = new SemanticsTester(tester); |
| |
| final List<Tab> tabs = new List<Tab>.generate(20, (int index) { |
| return new Tab(text: 'This is a very wide tab #$index'); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| initialIndex: 0, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Semantics( |
| container: true, |
| child: new TabBar( |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| const String tab0title = 'This is a very wide tab #0\nTab 1 of 20'; |
| const String tab10title = 'This is a very wide tab #10\nTab 11 of 20'; |
| |
| expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft])); |
| expect(semantics, includesNodeWith(label: tab0title)); |
| expect(semantics, isNot(includesNodeWith(label: tab10title))); |
| |
| controller.index = 10; |
| await tester.pumpAndSettle(); |
| |
| expect(semantics, isNot(includesNodeWith(label: tab0title))); |
| expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft, SemanticsAction.scrollRight])); |
| expect(semantics, includesNodeWith(label: tab10title)); |
| |
| controller.index = 19; |
| await tester.pumpAndSettle(); |
| |
| expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollRight])); |
| |
| controller.index = 0; |
| await tester.pumpAndSettle(); |
| |
| expect(semantics, includesNodeWith(actions: <SemanticsAction>[SemanticsAction.scrollLeft])); |
| expect(semantics, includesNodeWith(label: tab0title)); |
| expect(semantics, isNot(includesNodeWith(label: tab10title))); |
| |
| semantics.dispose(); |
| }); |
| |
| testWidgets('TabBar etc with zero tabs', (WidgetTester tester) async { |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 0, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Column( |
| children: <Widget>[ |
| new TabBar( |
| controller: controller, |
| tabs: const <Widget>[], |
| ), |
| new Flexible( |
| child: new TabBarView( |
| controller: controller, |
| children: const <Widget>[], |
| ), |
| ), |
| ], |
| ), |
| ), |
| ); |
| |
| expect(controller.index, 0); |
| expect(tester.getSize(find.byType(TabBar)), const Size(800.0, 48.0)); |
| expect(tester.getSize(find.byType(TabBarView)), const Size(800.0, 600.0 - 48.0)); |
| |
| // A fling in the TabBar or TabBarView, shouldn't do anything. |
| |
| await tester.fling(find.byType(TabBar), const Offset(-100.0, 0.0), 5000.0); |
| await tester.pumpAndSettle(); |
| |
| await tester.fling(find.byType(TabBarView), const Offset(100.0, 0.0), 5000.0); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.index, 0); |
| }); |
| |
| testWidgets('TabBar etc with one tab', (WidgetTester tester) async { |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 1, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Column( |
| children: <Widget>[ |
| new TabBar( |
| controller: controller, |
| tabs: const <Widget>[const Tab(text: 'TAB')], |
| ), |
| new Flexible( |
| child: new TabBarView( |
| controller: controller, |
| children: const <Widget>[const Text('PAGE')], |
| ), |
| ), |
| ], |
| ), |
| ), |
| ); |
| |
| expect(controller.index, 0); |
| expect(find.text('TAB'), findsOneWidget); |
| expect(find.text('PAGE'), findsOneWidget); |
| expect(tester.getSize(find.byType(TabBar)), const Size(800.0, 48.0)); |
| expect(tester.getSize(find.byType(TabBarView)), const Size(800.0, 600.0 - 48.0)); |
| |
| // The one tab should be center vis the app's width (800). |
| final double tabLeft = tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx; |
| final double tabRight = tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx; |
| expect(tabLeft + (tabRight - tabLeft) / 2.0, 400.0); |
| |
| // A fling in the TabBar or TabBarView, shouldn't move the tab. |
| |
| await tester.fling(find.byType(TabBar), const Offset(-100.0, 0.0), 5000.0); |
| await tester.pump(const Duration(milliseconds: 50)); |
| expect(tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx, tabLeft); |
| expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx, tabRight); |
| await tester.pumpAndSettle(); |
| |
| await tester.fling(find.byType(TabBarView), const Offset(100.0, 0.0), 5000.0); |
| await tester.pump(const Duration(milliseconds: 50)); |
| expect(tester.getTopLeft(find.widgetWithText(Tab, 'TAB')).dx, tabLeft); |
| expect(tester.getTopRight(find.widgetWithText(Tab, 'TAB')).dx, tabRight); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.index, 0); |
| expect(find.text('TAB'), findsOneWidget); |
| expect(find.text('PAGE'), findsOneWidget); |
| }); |
| |
| testWidgets('can tap on indicator at very bottom of TabBar to switch tabs', (WidgetTester tester) async { |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| initialIndex: 0, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Column( |
| children: <Widget>[ |
| new TabBar( |
| controller: controller, |
| indicatorWeight: 30.0, |
| tabs: const <Widget>[const Tab(text: 'TAB1'), const Tab(text: 'TAB2')], |
| ), |
| new Flexible( |
| child: new TabBarView( |
| controller: controller, |
| children: const <Widget>[const Text('PAGE1'), const Text('PAGE2')], |
| ), |
| ), |
| ], |
| ), |
| ), |
| ); |
| |
| expect(controller.index, 0); |
| |
| final Offset bottomRight = tester.getBottomRight(find.byType(TabBar)) - const Offset(1.0, 1.0); |
| final TestGesture gesture = await tester.startGesture(bottomRight); |
| await gesture.up(); |
| await tester.pumpAndSettle(); |
| |
| expect(controller.index, 1); |
| }); |
| |
| testWidgets('can override semantics of tabs', (WidgetTester tester) async { |
| final SemanticsTester semantics = new SemanticsTester(tester); |
| |
| final List<Tab> tabs = new List<Tab>.generate(2, (int index) { |
| return new Tab( |
| child: new Semantics( |
| label: 'Semantics override $index', |
| child: new ExcludeSemantics( |
| child: new Text('TAB #$index'), |
| ), |
| ), |
| ); |
| }); |
| |
| final TabController controller = new TabController( |
| vsync: const TestVSync(), |
| length: tabs.length, |
| initialIndex: 0, |
| ); |
| |
| await tester.pumpWidget( |
| boilerplate( |
| child: new Semantics( |
| container: true, |
| child: new TabBar( |
| isScrollable: true, |
| controller: controller, |
| tabs: tabs, |
| ), |
| ), |
| ), |
| ); |
| |
| final TestSemantics expectedSemantics = new TestSemantics.root( |
| children: <TestSemantics>[ |
| new TestSemantics.rootChild( |
| id: 1, |
| rect: TestSemantics.fullScreen, |
| children: <TestSemantics>[ |
| new TestSemantics( |
| id: 2, |
| rect: TestSemantics.fullScreen, |
| children: <TestSemantics>[ |
| new TestSemantics( |
| id: 3, |
| actions: SemanticsAction.tap.index, |
| flags: SemanticsFlag.isSelected.index, |
| label: 'Semantics override 0\nTab 1 of 2', |
| rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight), |
| transform: new Matrix4.translationValues(0.0, 276.0, 0.0), |
| ), |
| new TestSemantics( |
| id: 4, |
| actions: SemanticsAction.tap.index, |
| label: 'Semantics override 1\nTab 2 of 2', |
| rect: new Rect.fromLTRB(0.0, 0.0, 108.0, kTextTabBarHeight), |
| transform: new Matrix4.translationValues(108.0, 276.0, 0.0), |
| ), |
| ] |
| ) |
| ], |
| ), |
| ], |
| ); |
| |
| expect(semantics, hasSemantics(expectedSemantics)); |
| |
| semantics.dispose(); |
| }); |
| |
| test('illegal constructor combinations', () { |
| expect(() => new Tab(icon: nonconst(null)), throwsAssertionError); |
| expect(() => new Tab(icon: new Container(), text: 'foo', child: new Container()), throwsAssertionError); |
| expect(() => new Tab(text: 'foo', child: new Container()), throwsAssertionError); |
| }); |
| |
| |
| testWidgets('TabController changes', (WidgetTester tester) async { |
| // This is a regression test for https://github.com/flutter/flutter/issues/14812 |
| |
| Widget buildFrame(TabController controller) { |
| return boilerplate( |
| child: new Container( |
| alignment: Alignment.topLeft, |
| child: new TabBar( |
| controller: controller, |
| tabs: <Tab>[ |
| const Tab(text: 'LEFT'), |
| const Tab(text: 'RIGHT'), |
| ], |
| ), |
| ), |
| ); |
| } |
| |
| final TabController controller1 = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| initialIndex: 0, |
| ); |
| |
| final TabController controller2 = new TabController( |
| vsync: const TestVSync(), |
| length: 2, |
| initialIndex: 0, |
| ); |
| |
| await tester.pumpWidget(buildFrame(controller1)); |
| await tester.pumpWidget(buildFrame(controller2)); |
| expect(controller1.index, 0); |
| expect(controller2.index, 0); |
| |
| const double indicatorWeight = 2.0; |
| final RenderBox tabBarBox = tester.firstRenderObject<RenderBox>(find.byType(TabBar)); |
| expect(tabBarBox.size.height, 48.0); // 48 = _kTabHeight(46) + indicatorWeight(2.0) |
| |
| final double indicatorY = 48.0 - indicatorWeight / 2.0; |
| double indicatorLeft = indicatorWeight / 2.0; |
| double indicatorRight = 400.0 - indicatorWeight / 2.0; // 400 = screen_width / 2 |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| |
| await tester.tap(find.text('RIGHT')); |
| await tester.pumpAndSettle(); |
| expect(controller1.index, 0); |
| expect(controller2.index, 1); |
| |
| // Verify that the TabBar's _IndicatorPainter is now listening to |
| // tabController2. |
| |
| indicatorLeft = 400.0 + indicatorWeight / 2.0; |
| indicatorRight = 800.0 - indicatorWeight / 2.0; |
| expect(tabBarBox, paints..line( |
| strokeWidth: indicatorWeight, |
| p1: new Offset(indicatorLeft, indicatorY), |
| p2: new Offset(indicatorRight, indicatorY), |
| )); |
| }); |
| |
| } |
