| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| @Tags(<String>['reduced-test-set']) |
| import 'dart:ui' as ui; |
| |
| import 'package:flutter/cupertino.dart' show CupertinoPageRoute; |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| import '../rendering/mock_canvas.dart'; |
| |
| void main() { |
| testWidgets('test page transition (_FadeUpwardsPageTransition)', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| theme: ThemeData( |
| pageTransitionsTheme: const PageTransitionsTheme( |
| builders: <TargetPlatform, PageTransitionsBuilder>{ |
| TargetPlatform.android: FadeUpwardsPageTransitionsBuilder(), |
| }, |
| ), |
| ), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1TopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| FadeTransition widget2Opacity = |
| tester.element(find.text('Page 2')).findAncestorWidgetOfExactType<FadeTransition>()!; |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final Size widget2Size = tester.getSize(find.text('Page 2')); |
| |
| // Android transition is vertical only. |
| expect(widget1TopLeft.dx == widget2TopLeft.dx, true); |
| // Page 1 is above page 2 mid-transition. |
| expect(widget1TopLeft.dy < widget2TopLeft.dy, true); |
| // Animation begins 3/4 of the way up the page. |
| expect(widget2TopLeft.dy < widget2Size.height / 4.0, true); |
| // Animation starts with page 2 being near transparent. |
| expect(widget2Opacity.opacity.value < 0.01, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| widget2Opacity = |
| tester.element(find.text('Page 2')).findAncestorWidgetOfExactType<FadeTransition>()!; |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 2 starts to move down. |
| expect(widget1TopLeft.dy < widget2TopLeft.dy, true); |
| // Page 2 starts to lose opacity. |
| expect(widget2Opacity.opacity.value < 1.0, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android)); |
| |
| testWidgets('test page transition (CupertinoPageTransition)', (WidgetTester tester) async { |
| final Key page2Key = UniqueKey(); |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return Material( |
| key: page2Key, |
| child: const Text('Page 2'), |
| ); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 150)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final RenderDecoratedBox box = tester.element(find.byKey(page2Key)) |
| .findAncestorRenderObjectOfType<RenderDecoratedBox>()!; |
| |
| // Page 1 is moving to the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is coming in from the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| // As explained in _CupertinoEdgeShadowPainter.paint the shadow is drawn |
| // as a bunch of rects. The rects are covering an area to the left of |
| // where the page 2 box is and a width of 5% of the page 2 box width. |
| // `paints` tests relative to the painter's given canvas |
| // rather than relative to the screen so assert that the shadow starts at |
| // offset.dx = 0. |
| final PaintPattern paintsShadow = paints; |
| for (int i = 0; i < 0.05 * 800; i += 1) { |
| paintsShadow.rect(rect: Rect.fromLTWH(-i.toDouble() - 1.0 , 0.0, 1.0, 600)); |
| } |
| expect(box, paintsShadow); |
| |
| await tester.pumpAndSettle(); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 is coming back from the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is leaving towards the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test page transition (_ZoomPageTransition) without rasterization', (WidgetTester tester) async { |
| Iterable<Layer> findLayers(Finder of) { |
| return tester.layerListOf( |
| find.ancestor(of: of, matching: find.byType(SnapshotWidget)).first, |
| ); |
| } |
| |
| OpacityLayer findForwardFadeTransition(Finder of) { |
| return findLayers(of).whereType<OpacityLayer>().first; |
| } |
| |
| TransformLayer findForwardScaleTransition(Finder of) { |
| return findLayers(of).whereType<TransformLayer>().first; |
| } |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| allowSnapshotting: false, |
| builder: (BuildContext context) { |
| if (settings.name == '/') { |
| return const Material(child: Text('Page 1')); |
| } |
| return const Material(child: Text('Page 2')); |
| }, |
| ); |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 50)); |
| |
| TransformLayer widget1Scale = findForwardScaleTransition(find.text('Page 1')); |
| TransformLayer widget2Scale = findForwardScaleTransition(find.text('Page 2')); |
| OpacityLayer widget2Opacity = findForwardFadeTransition(find.text('Page 2')); |
| |
| double getScale(TransformLayer layer) { |
| return layer.transform!.storage[0]; |
| } |
| |
| // Page 1 is enlarging, starts from 1.0. |
| expect(getScale(widget1Scale), greaterThan(1.0)); |
| // Page 2 is enlarging from the value less than 1.0. |
| expect(getScale(widget2Scale), lessThan(1.0)); |
| // Page 2 is becoming none transparent. |
| expect(widget2Opacity.alpha, lessThan(255)); |
| |
| await tester.pump(const Duration(milliseconds: 250)); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| widget1Scale = findForwardScaleTransition(find.text('Page 1')); |
| widget2Scale = findForwardScaleTransition(find.text('Page 2')); |
| widget2Opacity = findForwardFadeTransition(find.text('Page 2')); |
| |
| // Page 1 is narrowing down, but still larger than 1.0. |
| expect(getScale(widget1Scale), greaterThan(1.0)); |
| // Page 2 is smaller than 1.0. |
| expect(getScale(widget2Scale), lessThan(1.0)); |
| // Page 2 is becoming transparent. |
| expect(widget2Opacity.alpha, lessThan(255)); |
| |
| await tester.pump(const Duration(milliseconds: 200)); |
| await tester.pump(const Duration(milliseconds: 1)); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android)); |
| |
| testWidgets('test page transition (_ZoomPageTransition) with rasterization re-rasterizes when window insets', (WidgetTester tester) async { |
| late Size oldSize; |
| late ui.WindowPadding oldInsets; |
| try { |
| oldSize = tester.binding.window.physicalSize; |
| oldInsets = tester.binding.window.viewInsets; |
| tester.binding.window.physicalSizeTestValue = const Size(1000, 1000); |
| tester.binding.window.viewInsetsTestValue = ui.WindowPadding.zero; |
| |
| // Intentionally use nested scaffolds to simulate the view insets being |
| // consumed. |
| final Key key = GlobalKey(); |
| await tester.pumpWidget( |
| RepaintBoundary( |
| key: key, |
| child: MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold(body: Scaffold( |
| body: Material(child: SizedBox.shrink()) |
| )); |
| }, |
| ); |
| }, |
| ), |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 50)); |
| |
| await expectLater(find.byKey(key), matchesGoldenFile('zoom_page_transition.small.png')); |
| |
| // Change the view insets |
| tester.binding.window.viewInsetsTestValue = const TestWindowPadding(left: 0, top: 0, right: 0, bottom: 500); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 50)); |
| |
| await expectLater(find.byKey(key), matchesGoldenFile('zoom_page_transition.big.png')); |
| } finally { |
| tester.binding.window.physicalSizeTestValue = oldSize; |
| tester.binding.window.viewInsetsTestValue = oldInsets; |
| } |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android), skip: kIsWeb); // [intended] rasterization is not used on the web. |
| |
| testWidgets('test fullscreen dialog transition', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: Material(child: Text('Page 1')), |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push(MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| fullscreenDialog: true, |
| )); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 doesn't move. |
| expect(widget1TransientTopLeft == widget1InitialTopLeft, true); |
| // Fullscreen dialogs transitions vertically only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 2 is coming in from the bottom. |
| expect(widget2TopLeft.dy > widget1InitialTopLeft.dy, true); |
| |
| await tester.pumpAndSettle(); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 doesn't move. |
| expect(widget1TransientTopLeft == widget1InitialTopLeft, true); |
| // Fullscreen dialogs transitions vertically only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 2 is leaving towards the bottom. |
| expect(widget2TopLeft.dy > widget1InitialTopLeft.dy, true); |
| |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test no back gesture on Android', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Scaffold(body: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Page 2 didn't move |
| expect(tester.getTopLeft(find.text('Page 2')), Offset.zero); |
| }, variant: TargetPlatformVariant.only(TargetPlatform.android)); |
| |
| testWidgets('test back gesture', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Scaffold(body: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| // Page 1 is now visible. |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // The route widget position needs to track the finger position very exactly. |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(400.0, 0.0)); |
| |
| await gesture.moveBy(const Offset(-200.0, 0.0)); |
| await tester.pump(); |
| |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(200.0, 0.0)); |
| |
| await gesture.moveBy(const Offset(-100.0, 200.0)); |
| await tester.pump(); |
| |
| expect(tester.getTopLeft(find.text('Page 2')), const Offset(100.0, 0.0)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('back gesture while OS changes', (WidgetTester tester) async { |
| final Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{ |
| '/': (BuildContext context) => Material( |
| child: TextButton( |
| child: const Text('PUSH'), |
| onPressed: () { Navigator.of(context).pushNamed('/b'); }, |
| ), |
| ), |
| '/b': (BuildContext context) => const Text('HELLO'), |
| }; |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.iOS), |
| routes: routes, |
| ), |
| ); |
| await tester.tap(find.text('PUSH')); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition1 = tester.getCenter(find.text('HELLO')); |
| final TestGesture gesture = await tester.startGesture(const Offset(2.5, 300.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition2 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition1.dx, lessThan(helloPosition2.dx)); |
| expect(helloPosition1.dy, helloPosition2.dy); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.iOS); |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.android), |
| routes: routes, |
| ), |
| ); |
| // Now we have to let the theme animation run through. |
| // This takes three frames (including the first one above): |
| // 1. Start the Theme animation. It's at t=0 so everything else is identical. |
| // 2. Start any animations that are informed by the Theme, for example, the |
| // DefaultTextStyle, on the first frame that the theme is not at t=0. In |
| // this case, it's at t=1.0 of the theme animation, so this is also the |
| // frame in which the theme animation ends. |
| // 3. End all the other animations. |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.android); |
| final Offset helloPosition3 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition3, helloPosition2); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition4 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition3.dx, lessThan(helloPosition4.dx)); |
| expect(helloPosition3.dy, helloPosition4.dy); |
| await gesture.moveBy(const Offset(500.0, 0.0)); |
| await gesture.up(); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 3); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsNothing); |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.macOS), |
| routes: routes, |
| ), |
| ); |
| await tester.tap(find.text('PUSH')); |
| expect(await tester.pumpAndSettle(const Duration(minutes: 1)), 2); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition5 = tester.getCenter(find.text('HELLO')); |
| await gesture.down(const Offset(2.5, 300.0)); |
| await tester.pump(const Duration(milliseconds: 20)); |
| await gesture.moveBy(const Offset(100.0, 0.0)); |
| expect(find.text('PUSH'), findsNothing); |
| expect(find.text('HELLO'), findsOneWidget); |
| await tester.pump(const Duration(milliseconds: 20)); |
| expect(find.text('PUSH'), findsOneWidget); |
| expect(find.text('HELLO'), findsOneWidget); |
| final Offset helloPosition6 = tester.getCenter(find.text('HELLO')); |
| expect(helloPosition5.dx, lessThan(helloPosition6.dx)); |
| expect(helloPosition5.dy, helloPosition6.dy); |
| expect(Theme.of(tester.element(find.text('HELLO'))).platform, TargetPlatform.macOS); |
| }); |
| |
| testWidgets('test no back gesture on fullscreen dialogs', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| const MaterialApp( |
| home: Scaffold(body: Text('Page 1')), |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push(MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold(body: Text('Page 2')); |
| }, |
| fullscreenDialog: true, |
| )); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Drag from left edge to invoke the gesture. |
| final TestGesture gesture = await tester.startGesture(const Offset(5.0, 100.0)); |
| await gesture.moveBy(const Offset(400.0, 0.0)); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Page 2 didn't move |
| expect(tester.getTopLeft(find.text('Page 2')), Offset.zero); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test adaptable transitions switch during execution', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData( |
| platform: TargetPlatform.android, |
| pageTransitionsTheme: const PageTransitionsTheme( |
| builders: <TargetPlatform, PageTransitionsBuilder>{ |
| TargetPlatform.android: FadeUpwardsPageTransitionsBuilder(), |
| }, |
| ), |
| ), |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| final Offset widget1InitialTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| final Size widget2Size = tester.getSize(find.text('Page 2')); |
| |
| // Android transition is vertical only. |
| expect(widget1InitialTopLeft.dx == widget2TopLeft.dx, true); |
| // Page 1 is above page 2 mid-transition. |
| expect(widget1InitialTopLeft.dy < widget2TopLeft.dy, true); |
| // Animation begins from the top of the page. |
| expect(widget2TopLeft.dy < widget2Size.height, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| // Page 2 covers page 1. |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| // Re-pump the same app but with iOS instead of Android. |
| await tester.pumpWidget( |
| MaterialApp( |
| home: const Material(child: Text('Page 1')), |
| routes: <String, WidgetBuilder>{ |
| '/next': (BuildContext context) { |
| return const Material(child: Text('Page 2')); |
| }, |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 100)); |
| |
| Offset widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| widget2TopLeft = tester.getTopLeft(find.text('Page 2')); |
| |
| // Page 1 is coming back from the left. |
| expect(widget1TransientTopLeft.dx < widget1InitialTopLeft.dx, true); |
| // Page 1 isn't moving vertically. |
| expect(widget1TransientTopLeft.dy == widget1InitialTopLeft.dy, true); |
| // iOS transition is horizontal only. |
| expect(widget1InitialTopLeft.dy == widget2TopLeft.dy, true); |
| // Page 2 is leaving towards the right. |
| expect(widget2TopLeft.dx > widget1InitialTopLeft.dx, true); |
| |
| await tester.pump(const Duration(milliseconds: 300)); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| |
| widget1TransientTopLeft = tester.getTopLeft(find.text('Page 1')); |
| |
| // Page 1 is back where it started. |
| expect(widget1InitialTopLeft == widget1TransientTopLeft, true); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test edge swipe then drop back at starting point works', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| settings: settings, |
| builder: (BuildContext context) { |
| final String pageNumber = settings.name == '/' ? '1' : '2'; |
| return Center(child: Text('Page $pageNumber')); |
| }, |
| ); |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 200)); |
| await gesture.moveBy(const Offset(300, 0)); |
| await tester.pump(); |
| // Bring it exactly back such that there's nothing to animate when releasing. |
| await gesture.moveBy(const Offset(-300, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('test edge swipe then drop back at ending point works', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| MaterialApp( |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| settings: settings, |
| builder: (BuildContext context) { |
| final String pageNumber = settings.name == '/' ? '1' : '2'; |
| return Center(child: Text('Page $pageNumber')); |
| }, |
| ); |
| }, |
| ), |
| ); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pushNamed('/next'); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(seconds: 1)); |
| |
| expect(find.text('Page 1'), findsNothing); |
| expect(find.text('Page 2'), isOnstage); |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 200)); |
| // The width of the page. |
| await gesture.moveBy(const Offset(800, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| |
| expect(find.text('Page 1'), isOnstage); |
| expect(find.text('Page 2'), findsNothing); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('Back swipe dismiss interrupted by route push', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/28728 |
| final GlobalKey scaffoldKey = GlobalKey(); |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: scaffoldKey, |
| body: Center( |
| child: ElevatedButton( |
| onPressed: () { |
| Navigator.push<void>(scaffoldKey.currentContext!, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold( |
| body: Center(child: Text('route')), |
| ); |
| }, |
| )); |
| }, |
| child: const Text('push'), |
| ), |
| ), |
| ), |
| ), |
| ); |
| |
| // Check the basic iOS back-swipe dismiss transition. Dragging the pushed |
| // route halfway across the screen will trigger the iOS dismiss animation |
| |
| await tester.tap(find.text('push')); |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| |
| TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| expect( // The 'route' route has been dragged to the right, halfway across the screen |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))), |
| const Offset(400, 0), |
| ); |
| expect( // The 'push' route is sliding in from the left. |
| tester.getTopLeft(find.ancestor(of: find.text('push'), matching: find.byType(Scaffold))).dx, |
| lessThan(0), |
| ); |
| await tester.pumpAndSettle(); |
| expect(find.text('push'), findsOneWidget); |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('push'), matching: find.byType(Scaffold))), |
| Offset.zero, |
| ); |
| expect(find.text('route'), findsNothing); |
| |
| |
| // Run the dismiss animation 60%, which exposes the route "push" button, |
| // and then press the button. A drag dropped animation is 400ms when dropped |
| // exactly halfway. It follows a curve that is very steep initially. |
| |
| await tester.tap(find.text('push')); |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| |
| gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); // Drag halfway. |
| await gesture.up(); |
| await tester.pump(); // Trigger the dropped snapping animation. |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))), |
| const Offset(400, 0), |
| ); |
| // Let the dismissing snapping animation go 60%. |
| await tester.pump(const Duration(milliseconds: 240)); |
| expect( |
| tester.getTopLeft(find.ancestor(of: find.text('route'), matching: find.byType(Scaffold))).dx, |
| moreOrLessEquals(798, epsilon: 1), |
| ); |
| |
| // Use the navigator to push a route instead of tapping the 'push' button. |
| // The topmost route (the one that's animating away), ignores input while |
| // the pop is underway because route.navigator.userGestureInProgress. |
| Navigator.push<void>(scaffoldKey.currentContext!, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return const Scaffold( |
| body: Center(child: Text('route')), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| expect(find.text('route'), findsOneWidget); |
| expect(find.text('push'), findsNothing); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('During back swipe the route ignores input', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/39989 |
| |
| final GlobalKey homeScaffoldKey = GlobalKey(); |
| final GlobalKey pageScaffoldKey = GlobalKey(); |
| int homeTapCount = 0; |
| int pageTapCount = 0; |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: homeScaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| homeTapCount += 1; |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 0); |
| |
| Navigator.push<void>(homeScaffoldKey.currentContext!, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: pageScaffoldKey, |
| appBar: AppBar(title: const Text('Page')), |
| body: Padding( |
| padding: const EdgeInsets.all(16), |
| child: GestureDetector( |
| onTap: () { |
| pageTapCount += 1; |
| }, |
| ), |
| ), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| await tester.tap(find.byKey(pageScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Start the basic iOS back-swipe dismiss transition. Drag the pushed |
| // "page" route halfway across the screen. The underlying "home" will |
| // start sliding in from the left. |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(400, 0)); |
| await tester.pump(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(400, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| |
| // Tapping on the "page" route doesn't trigger the GestureDetector because |
| // it's being dragged. |
| await tester.tap(find.byKey(pageScaffoldKey), warnIfMissed: false); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Tapping the "page" route's back button doesn't do anything either. |
| await tester.tap(find.byTooltip('Back'), warnIfMissed: false); |
| await tester.pumpAndSettle(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(400, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('After a pop caused by a back-swipe, input reaches the exposed route', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/41024 |
| |
| final GlobalKey homeScaffoldKey = GlobalKey(); |
| final GlobalKey pageScaffoldKey = GlobalKey(); |
| int homeTapCount = 0; |
| int pageTapCount = 0; |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| home: Scaffold( |
| key: homeScaffoldKey, |
| body: GestureDetector( |
| onTap: () { |
| homeTapCount += 1; |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 0); |
| |
| final ValueNotifier<bool> notifier = Navigator.of(homeScaffoldKey.currentContext!).userGestureInProgressNotifier; |
| expect(notifier.value, false); |
| |
| Navigator.push<void>(homeScaffoldKey.currentContext!, MaterialPageRoute<void>( |
| builder: (BuildContext context) { |
| return Scaffold( |
| key: pageScaffoldKey, |
| appBar: AppBar(title: const Text('Page')), |
| body: Padding( |
| padding: const EdgeInsets.all(16), |
| child: GestureDetector( |
| onTap: () { |
| pageTapCount += 1; |
| }, |
| ), |
| ), |
| ); |
| }, |
| )); |
| |
| await tester.pumpAndSettle(); |
| await tester.tap(find.byKey(pageScaffoldKey)); |
| expect(homeTapCount, 1); |
| expect(pageTapCount, 1); |
| |
| // Trigger the basic iOS back-swipe dismiss transition. Drag the pushed |
| // "page" route more than halfway across the screen and then release it. |
| |
| final TestGesture gesture = await tester.startGesture(const Offset(5, 300)); |
| await gesture.moveBy(const Offset(500, 0)); |
| await tester.pump(); |
| expect(tester.getTopLeft(find.byKey(pageScaffoldKey)), const Offset(500, 0)); |
| expect(tester.getTopLeft(find.byKey(homeScaffoldKey)).dx, lessThan(0)); |
| expect(notifier.value, true); |
| await gesture.up(); |
| await tester.pumpAndSettle(); |
| expect(notifier.value, false); |
| expect(find.byKey(pageScaffoldKey), findsNothing); |
| |
| // The back-swipe dismiss pop transition has finished and input on the |
| // home page still works. |
| await tester.tap(find.byKey(homeScaffoldKey)); |
| expect(homeTapCount, 2); |
| expect(pageTapCount, 1); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('A MaterialPageRoute should slide out with CupertinoPageTransition when a compatible PageRoute is pushed on top of it', (WidgetTester tester) async { |
| // Regression test for https://github.com/flutter/flutter/issues/44864. |
| |
| await tester.pumpWidget( |
| MaterialApp( |
| theme: ThemeData(platform: TargetPlatform.iOS), |
| home: Scaffold( |
| appBar: AppBar(title: const Text('Title')), |
| ), |
| ), |
| ); |
| |
| final Offset titleInitialTopLeft = tester.getTopLeft(find.text('Title')); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).push<void>( |
| CupertinoPageRoute<void>(builder: (BuildContext context) => const Placeholder()), |
| ); |
| |
| await tester.pump(); |
| await tester.pump(const Duration(milliseconds: 150)); |
| |
| final Offset titleTransientTopLeft = tester.getTopLeft(find.text('Title')); |
| |
| // Title of the first route slides to the left. |
| expect(titleInitialTopLeft.dy, equals(titleTransientTopLeft.dy)); |
| expect(titleInitialTopLeft.dx, greaterThan(titleTransientTopLeft.dx)); |
| }, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS })); |
| |
| testWidgets('MaterialPage works', (WidgetTester tester) async { |
| final LocalKey pageKey = UniqueKey(); |
| final TransitionDetector detector = TransitionDetector(); |
| List<Page<void>> myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKey, child: const Text('first')), |
| ]; |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| assert(false); // The test should never execute this. |
| return true; |
| }, |
| transitionDelegate: detector, |
| ), |
| ); |
| |
| expect(detector.hasTransition, isFalse); |
| expect(find.text('first'), findsOneWidget); |
| |
| myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKey, child: const Text('second')), |
| ]; |
| |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| assert(false); // The test should never execute this. |
| return true; |
| }, |
| transitionDelegate: detector, |
| ), |
| ); |
| // There should be no transition because the page has the same key. |
| expect(detector.hasTransition, isFalse); |
| // The content does update. |
| expect(find.text('first'), findsNothing); |
| expect(find.text('second'), findsOneWidget); |
| }); |
| |
| testWidgets('MaterialPage can toggle MaintainState', (WidgetTester tester) async { |
| final LocalKey pageKeyOne = UniqueKey(); |
| final LocalKey pageKeyTwo = UniqueKey(); |
| final TransitionDetector detector = TransitionDetector(); |
| List<Page<void>> myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKeyOne, maintainState: false, child: const Text('first')), |
| MaterialPage<void>(key: pageKeyTwo, child: const Text('second')), |
| ]; |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| assert(false); // The test should never execute this. |
| return true; |
| }, |
| transitionDelegate: detector, |
| ), |
| ); |
| |
| expect(detector.hasTransition, isFalse); |
| // Page one does not maintain state. |
| expect(find.text('first', skipOffstage: false), findsNothing); |
| expect(find.text('second'), findsOneWidget); |
| |
| myPages = <Page<void>>[ |
| MaterialPage<void>(key: pageKeyOne, child: const Text('first')), |
| MaterialPage<void>(key: pageKeyTwo, child: const Text('second')), |
| ]; |
| |
| await tester.pumpWidget( |
| buildNavigator( |
| pages: myPages, |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| assert(false); // The test should never execute this. |
| return true; |
| }, |
| transitionDelegate: detector, |
| ), |
| ); |
| // There should be no transition because the page has the same key. |
| expect(detector.hasTransition, isFalse); |
| // Page one sets the maintain state to be true, its widget tree should be |
| // built. |
| expect(find.text('first', skipOffstage: false), findsOneWidget); |
| expect(find.text('second'), findsOneWidget); |
| }); |
| |
| testWidgets('MaterialPage does not lose its state when transitioning out', (WidgetTester tester) async { |
| final GlobalKey<NavigatorState> navigator = GlobalKey<NavigatorState>(); |
| await tester.pumpWidget(KeepsStateTestWidget(navigatorKey: navigator)); |
| expect(find.text('subpage'), findsOneWidget); |
| expect(find.text('home'), findsNothing); |
| |
| navigator.currentState!.pop(); |
| await tester.pump(); |
| |
| expect(find.text('subpage'), findsOneWidget); |
| expect(find.text('home'), findsOneWidget); |
| }); |
| |
| testWidgets('MaterialPage restores its state', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| RootRestorationScope( |
| restorationId: 'root', |
| child: TestDependencies( |
| child: Navigator( |
| onPopPage: (Route<dynamic> route, dynamic result) { return false; }, |
| pages: const <Page<Object?>>[ |
| MaterialPage<void>( |
| restorationId: 'p1', |
| child: TestRestorableWidget(restorationId: 'p1'), |
| ), |
| ], |
| restorationScopeId: 'nav', |
| onGenerateRoute: (RouteSettings settings) { |
| return MaterialPageRoute<void>( |
| settings: settings, |
| builder: (BuildContext context) { |
| return TestRestorableWidget(restorationId: settings.name!); |
| }, |
| ); |
| }, |
| ), |
| ), |
| ), |
| ); |
| |
| expect(find.text('p1'), findsOneWidget); |
| expect(find.text('count: 0'), findsOneWidget); |
| |
| await tester.tap(find.text('increment')); |
| await tester.pump(); |
| expect(find.text('count: 1'), findsOneWidget); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).restorablePushNamed('p2'); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('p1'), findsNothing); |
| expect(find.text('p2'), findsOneWidget); |
| |
| await tester.tap(find.text('increment')); |
| await tester.pump(); |
| await tester.tap(find.text('increment')); |
| await tester.pump(); |
| expect(find.text('count: 2'), findsOneWidget); |
| |
| await tester.restartAndRestore(); |
| |
| expect(find.text('p2'), findsOneWidget); |
| expect(find.text('count: 2'), findsOneWidget); |
| |
| tester.state<NavigatorState>(find.byType(Navigator)).pop(); |
| await tester.pumpAndSettle(); |
| |
| expect(find.text('p1'), findsOneWidget); |
| expect(find.text('count: 1'), findsOneWidget); |
| }); |
| } |
| |
| class TransitionDetector extends DefaultTransitionDelegate<void> { |
| bool hasTransition = false; |
| @override |
| Iterable<RouteTransitionRecord> resolve({ |
| required List<RouteTransitionRecord> newPageRouteHistory, |
| required Map<RouteTransitionRecord?, RouteTransitionRecord> locationToExitingPageRoute, |
| required Map<RouteTransitionRecord?, List<RouteTransitionRecord>> pageRouteToPagelessRoutes, |
| }) { |
| hasTransition = true; |
| return super.resolve( |
| newPageRouteHistory: newPageRouteHistory, |
| locationToExitingPageRoute: locationToExitingPageRoute, |
| pageRouteToPagelessRoutes: pageRouteToPagelessRoutes, |
| ); |
| } |
| } |
| |
| Widget buildNavigator({ |
| required List<Page<dynamic>> pages, |
| required PopPageCallback onPopPage, |
| GlobalKey<NavigatorState>? key, |
| TransitionDelegate<dynamic>? transitionDelegate, |
| }) { |
| return MediaQuery( |
| data: MediaQueryData.fromWindow(WidgetsBinding.instance.window), |
| child: Localizations( |
| locale: const Locale('en', 'US'), |
| delegates: const <LocalizationsDelegate<dynamic>>[ |
| DefaultMaterialLocalizations.delegate, |
| DefaultWidgetsLocalizations.delegate, |
| ], |
| child: Directionality( |
| textDirection: TextDirection.ltr, |
| child: Navigator( |
| key: key, |
| pages: pages, |
| onPopPage: onPopPage, |
| transitionDelegate: transitionDelegate ?? const DefaultTransitionDelegate<dynamic>(), |
| ), |
| ), |
| ), |
| ); |
| } |
| |
| class KeepsStateTestWidget extends StatefulWidget { |
| const KeepsStateTestWidget({super.key, this.navigatorKey}); |
| |
| final Key? navigatorKey; |
| |
| @override |
| State<KeepsStateTestWidget> createState() => _KeepsStateTestWidgetState(); |
| } |
| |
| class _KeepsStateTestWidgetState extends State<KeepsStateTestWidget> { |
| String? _subpage = 'subpage'; |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| home: Navigator( |
| key: widget.navigatorKey, |
| pages: <Page<void>>[ |
| const MaterialPage<void>(child: Text('home')), |
| if (_subpage != null) MaterialPage<void>(child: Text(_subpage!)), |
| ], |
| onPopPage: (Route<dynamic> route, dynamic result) { |
| if (!route.didPop(result)) { |
| return false; |
| } |
| setState(() { |
| _subpage = null; |
| }); |
| return true; |
| }, |
| ), |
| ); |
| } |
| } |
| |
| class TestRestorableWidget extends StatefulWidget { |
| const TestRestorableWidget({super.key, required this.restorationId}); |
| |
| final String restorationId; |
| |
| @override |
| State<StatefulWidget> createState() => _TestRestorableWidgetState(); |
| } |
| |
| class _TestRestorableWidgetState extends State<TestRestorableWidget> with RestorationMixin { |
| @override |
| String? get restorationId => widget.restorationId; |
| |
| final RestorableInt counter = RestorableInt(0); |
| |
| @override |
| void restoreState(RestorationBucket? oldBucket, bool initialRestore) { |
| registerForRestoration(counter, 'counter'); |
| } |
| |
| @override |
| Widget build(BuildContext context) { |
| return Column( |
| children: <Widget>[ |
| Text(widget.restorationId), |
| Text('count: ${counter.value}'), |
| ElevatedButton( |
| onPressed: () { |
| setState(() { |
| counter.value++; |
| }); |
| }, |
| child: const Text('increment'), |
| ), |
| ], |
| ); |
| } |
| } |
| |
| class TestDependencies extends StatelessWidget { |
| const TestDependencies({required this.child, super.key}); |
| |
| final Widget child; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Directionality( |
| textDirection: TextDirection.ltr, |
| child: MediaQuery( |
| data: MediaQueryData.fromWindow(WidgetsBinding.instance.window), |
| child: child, |
| ), |
| ); |
| } |
| } |
| |
| class TestWindowPadding implements ui.WindowPadding { |
| const TestWindowPadding({ |
| required this.left, |
| required this.top, |
| required this.right, |
| required this.bottom, |
| }); |
| |
| @override |
| final double left; |
| @override |
| final double top; |
| @override |
| final double right; |
| @override |
| final double bottom; |
| } |
