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WIP Commits separated as follows: - Update lints in analysis_options files - Run `dart fix --apply` - Clean up leftover analysis issues - Run `dart format .` in the right places. Local analysis and testing passes. Checking CI now. Part of https://github.com/flutter/flutter/issues/178827 - Adoption of flutter_lints in examples/api coming in a separate change (cc @loic-sharma) ## Pre-launch Checklist - [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [ ] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [ ] I signed the [CLA]. - [ ] I listed at least one issue that this PR fixes in the description above. - [ ] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
1074 lines
41 KiB
Dart
1074 lines
41 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'semantics_tester.dart';
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void main() {
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group('Sliver Semantics', () {
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setUp(() {
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debugResetSemanticsIdCounter();
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});
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_tests();
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});
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}
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void _tests() {
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testWidgets('excludeFromScrollable works correctly', (WidgetTester tester) async {
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final semantics = SemanticsTester(tester);
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const appBarExpandedHeight = 200.0;
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final scrollController = ScrollController();
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addTearDown(scrollController.dispose);
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final listChildren = List<Widget>.generate(30, (int i) {
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return SizedBox(height: appBarExpandedHeight, child: Text('Item $i'));
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});
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await tester.pumpWidget(
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Semantics(
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textDirection: TextDirection.ltr,
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child: Localizations(
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locale: const Locale('en', 'us'),
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delegates: const <LocalizationsDelegate<dynamic>>[
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DefaultWidgetsLocalizations.delegate,
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DefaultMaterialLocalizations.delegate,
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],
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child: Directionality(
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textDirection: TextDirection.ltr,
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child: MediaQuery(
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data: const MediaQueryData(),
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child: CustomScrollView(
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controller: scrollController,
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slivers: <Widget>[
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const SliverAppBar(
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pinned: true,
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expandedHeight: appBarExpandedHeight,
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title: Text('Semantics Test with Slivers'),
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),
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SliverList.list(children: listChildren),
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],
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),
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),
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),
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),
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),
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);
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// AppBar is child of node with semantic scroll actions.
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[
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SemanticsFlag.namesRoute,
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SemanticsFlag.isHeader,
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],
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label: 'Semantics Test with Slivers',
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textDirection: TextDirection.ltr,
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),
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],
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),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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actions: <SemanticsAction>[
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SemanticsAction.scrollUp,
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SemanticsAction.scrollToOffset,
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],
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children: <TestSemantics>[
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TestSemantics(label: 'Item 0', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 2',
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textDirection: TextDirection.ltr,
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),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 3',
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textDirection: TextDirection.ltr,
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),
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],
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),
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],
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),
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],
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),
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],
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),
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],
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),
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ignoreRect: true,
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ignoreTransform: true,
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ignoreId: true,
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),
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);
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// Scroll down far enough to reach the pinned state of the app bar.
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scrollController.jumpTo(appBarExpandedHeight);
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await tester.pump();
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// App bar is NOT a child of node with semantic scroll actions.
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[
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SemanticsFlag.namesRoute,
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SemanticsFlag.isHeader,
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],
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label: 'Semantics Test with Slivers',
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textDirection: TextDirection.ltr,
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),
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],
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),
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TestSemantics(
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actions: <SemanticsAction>[
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SemanticsAction.scrollUp,
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SemanticsAction.scrollDown,
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SemanticsAction.scrollToOffset,
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],
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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children: <TestSemantics>[
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TestSemantics(label: 'Item 0', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 3',
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textDirection: TextDirection.ltr,
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),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 4',
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textDirection: TextDirection.ltr,
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),
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],
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),
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],
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),
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],
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),
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],
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),
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],
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),
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ignoreRect: true,
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ignoreTransform: true,
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ignoreId: true,
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),
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);
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// Scroll halfway back to the top, app bar is no longer in pinned state.
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scrollController.jumpTo(appBarExpandedHeight / 2);
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await tester.pump();
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// AppBar is child of node with semantic scroll actions.
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[
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SemanticsFlag.namesRoute,
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SemanticsFlag.isHeader,
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],
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label: 'Semantics Test with Slivers',
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textDirection: TextDirection.ltr,
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),
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],
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),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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actions: <SemanticsAction>[
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SemanticsAction.scrollUp,
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SemanticsAction.scrollDown,
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SemanticsAction.scrollToOffset,
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],
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children: <TestSemantics>[
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TestSemantics(label: 'Item 0', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 3',
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textDirection: TextDirection.ltr,
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),
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],
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),
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],
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),
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],
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),
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],
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),
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],
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),
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ignoreRect: true,
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ignoreTransform: true,
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ignoreId: true,
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),
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);
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semantics.dispose();
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});
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testWidgets('Offscreen sliver are hidden in semantics tree', (WidgetTester tester) async {
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final semantics = SemanticsTester(tester);
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const containerHeight = 200.0;
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final scrollController = ScrollController(initialScrollOffset: containerHeight * 1.5);
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addTearDown(scrollController.dispose);
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final slivers = List<Widget>.generate(30, (int i) {
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return SliverToBoxAdapter(
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child: SizedBox(
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height: containerHeight,
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child: Text('Item $i', textDirection: TextDirection.ltr),
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),
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);
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});
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await tester.pumpWidget(
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Semantics(
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textDirection: TextDirection.ltr,
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child: Localizations(
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locale: const Locale('en', 'us'),
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delegates: const <LocalizationsDelegate<dynamic>>[
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DefaultWidgetsLocalizations.delegate,
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DefaultMaterialLocalizations.delegate,
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],
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child: Directionality(
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textDirection: TextDirection.ltr,
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child: Center(
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child: SizedBox(
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height: containerHeight,
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child: CustomScrollView(controller: scrollController, slivers: slivers),
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),
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),
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),
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),
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),
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);
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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actions: <SemanticsAction>[
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SemanticsAction.scrollUp,
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SemanticsAction.scrollDown,
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SemanticsAction.scrollToOffset,
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],
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 0',
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textDirection: TextDirection.ltr,
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),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 3',
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textDirection: TextDirection.ltr,
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),
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],
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),
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],
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),
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],
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),
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],
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),
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],
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),
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ignoreRect: true,
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ignoreTransform: true,
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ignoreId: true,
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),
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);
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semantics.dispose();
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});
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testWidgets('SemanticsNodes of Slivers are in paint order', (WidgetTester tester) async {
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final semantics = SemanticsTester(tester);
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final slivers = List<Widget>.generate(5, (int i) {
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return SliverToBoxAdapter(child: SizedBox(height: 20.0, child: Text('Item $i')));
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});
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await tester.pumpWidget(
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Semantics(
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textDirection: TextDirection.ltr,
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child: Localizations(
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locale: const Locale('en', 'us'),
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delegates: const <LocalizationsDelegate<dynamic>>[
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DefaultWidgetsLocalizations.delegate,
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DefaultMaterialLocalizations.delegate,
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],
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child: Directionality(
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textDirection: TextDirection.ltr,
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child: CustomScrollView(slivers: slivers),
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),
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),
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),
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);
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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children: <TestSemantics>[
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TestSemantics(label: 'Item 4', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 3', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 0', textDirection: TextDirection.ltr),
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],
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),
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],
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),
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],
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),
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],
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),
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],
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),
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ignoreRect: true,
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ignoreTransform: true,
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ignoreId: true,
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childOrder: DebugSemanticsDumpOrder.inverseHitTest,
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),
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);
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semantics.dispose();
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});
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testWidgets(
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'SemanticsNodes of a sliver fully covered by another overlapping sliver are excluded',
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(WidgetTester tester) async {
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final semantics = SemanticsTester(tester);
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final listChildren = List<Widget>.generate(10, (int i) {
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return SizedBox(height: 200.0, child: Text('Item $i', textDirection: TextDirection.ltr));
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});
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final controller = ScrollController(initialScrollOffset: 280.0);
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addTearDown(controller.dispose);
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await tester.pumpWidget(
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Semantics(
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textDirection: TextDirection.ltr,
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child: Localizations(
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locale: const Locale('en', 'us'),
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delegates: const <LocalizationsDelegate<dynamic>>[
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DefaultWidgetsLocalizations.delegate,
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DefaultMaterialLocalizations.delegate,
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],
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child: Directionality(
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textDirection: TextDirection.ltr,
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child: MediaQuery(
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data: const MediaQueryData(),
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child: CustomScrollView(
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slivers: <Widget>[
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const SliverAppBar(pinned: true, expandedHeight: 100.0, title: Text('AppBar')),
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SliverList.list(children: listChildren),
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],
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controller: controller,
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),
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),
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),
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),
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),
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);
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expect(
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semantics,
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hasSemantics(
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TestSemantics.root(
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children: <TestSemantics>[
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TestSemantics(
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textDirection: TextDirection.ltr,
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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children: <TestSemantics>[
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TestSemantics(
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tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[
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SemanticsFlag.namesRoute,
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SemanticsFlag.isHeader,
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],
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label: 'AppBar',
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textDirection: TextDirection.ltr,
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),
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],
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),
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TestSemantics(
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actions: <SemanticsAction>[
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SemanticsAction.scrollUp,
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SemanticsAction.scrollDown,
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SemanticsAction.scrollToOffset,
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],
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flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
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children: <TestSemantics>[
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
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label: 'Item 0',
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textDirection: TextDirection.ltr,
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),
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TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
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TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
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|
TestSemantics(label: 'Item 3', textDirection: TextDirection.ltr),
|
|
TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
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label: 'Item 4',
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textDirection: TextDirection.ltr,
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),
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TestSemantics(
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flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
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label: 'Item 5',
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textDirection: TextDirection.ltr,
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),
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],
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|
),
|
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],
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),
|
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],
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),
|
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],
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),
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],
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),
|
|
ignoreTransform: true,
|
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ignoreId: true,
|
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ignoreRect: true,
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),
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);
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semantics.dispose();
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},
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);
|
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|
|
testWidgets('Slivers fully covered by another overlapping sliver are hidden', (
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WidgetTester tester,
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) async {
|
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final semantics = SemanticsTester(tester);
|
|
|
|
final controller = ScrollController(initialScrollOffset: 280.0);
|
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addTearDown(controller.dispose);
|
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final slivers = List<Widget>.generate(10, (int i) {
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return SliverToBoxAdapter(
|
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child: SizedBox(height: 200.0, child: Text('Item $i', textDirection: TextDirection.ltr)),
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);
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});
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await tester.pumpWidget(
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|
Semantics(
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textDirection: TextDirection.ltr,
|
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child: Localizations(
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locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: CustomScrollView(
|
|
controller: controller,
|
|
slivers: <Widget>[
|
|
const SliverAppBar(pinned: true, expandedHeight: 100.0, title: Text('AppBar')),
|
|
...slivers,
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(
|
|
semantics,
|
|
hasSemantics(
|
|
TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
textDirection: TextDirection.ltr,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.namesRoute,
|
|
SemanticsFlag.isHeader,
|
|
],
|
|
label: 'AppBar',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
TestSemantics(
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
SemanticsAction.scrollToOffset,
|
|
],
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 3', textDirection: TextDirection.ltr),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 4',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 5',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
ignoreTransform: true,
|
|
ignoreRect: true,
|
|
ignoreId: true,
|
|
),
|
|
);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets(
|
|
'SemanticsNodes of a sliver fully covered by another overlapping sliver are excluded (reverse)',
|
|
(WidgetTester tester) async {
|
|
final semantics = SemanticsTester(tester);
|
|
|
|
final listChildren = List<Widget>.generate(10, (int i) {
|
|
return SizedBox(height: 200.0, child: Text('Item $i', textDirection: TextDirection.ltr));
|
|
});
|
|
final controller = ScrollController(initialScrollOffset: 280.0);
|
|
addTearDown(controller.dispose);
|
|
await tester.pumpWidget(
|
|
Semantics(
|
|
textDirection: TextDirection.ltr,
|
|
child: Localizations(
|
|
locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: CustomScrollView(
|
|
reverse: true, // This is the important setting for this test.
|
|
slivers: <Widget>[
|
|
const SliverAppBar(pinned: true, expandedHeight: 100.0, title: Text('AppBar')),
|
|
SliverList.list(children: listChildren),
|
|
],
|
|
controller: controller,
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(
|
|
semantics,
|
|
hasSemantics(
|
|
TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
textDirection: TextDirection.ltr,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
SemanticsAction.scrollToOffset,
|
|
],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 5',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 4',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(label: 'Item 3', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
TestSemantics(
|
|
tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.namesRoute,
|
|
SemanticsFlag.isHeader,
|
|
],
|
|
label: 'AppBar',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
ignoreTransform: true,
|
|
ignoreId: true,
|
|
ignoreRect: true,
|
|
),
|
|
);
|
|
|
|
semantics.dispose();
|
|
},
|
|
);
|
|
|
|
testWidgets('Slivers fully covered by another overlapping sliver are hidden (reverse)', (
|
|
WidgetTester tester,
|
|
) async {
|
|
final semantics = SemanticsTester(tester);
|
|
|
|
final controller = ScrollController(initialScrollOffset: 280.0);
|
|
addTearDown(controller.dispose);
|
|
final slivers = List<Widget>.generate(10, (int i) {
|
|
return SliverToBoxAdapter(
|
|
child: SizedBox(height: 200.0, child: Text('Item $i', textDirection: TextDirection.ltr)),
|
|
);
|
|
});
|
|
await tester.pumpWidget(
|
|
Semantics(
|
|
textDirection: TextDirection.ltr,
|
|
child: Localizations(
|
|
locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: CustomScrollView(
|
|
reverse: true, // This is the important setting for this test.
|
|
controller: controller,
|
|
slivers: <Widget>[
|
|
const SliverAppBar(pinned: true, expandedHeight: 100.0, title: Text('AppBar')),
|
|
...slivers,
|
|
],
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
expect(
|
|
semantics,
|
|
hasSemantics(
|
|
TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
textDirection: TextDirection.ltr,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
SemanticsAction.scrollToOffset,
|
|
],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 5',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 4',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(label: 'Item 3', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 2', textDirection: TextDirection.ltr),
|
|
TestSemantics(label: 'Item 1', textDirection: TextDirection.ltr),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
TestSemantics(
|
|
tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.namesRoute,
|
|
SemanticsFlag.isHeader,
|
|
],
|
|
label: 'AppBar',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
ignoreTransform: true,
|
|
ignoreId: true,
|
|
ignoreRect: true,
|
|
),
|
|
);
|
|
|
|
semantics.dispose();
|
|
});
|
|
|
|
testWidgets(
|
|
'Slivers fully covered by another overlapping sliver are hidden (with center sliver)',
|
|
(WidgetTester tester) async {
|
|
final semantics = SemanticsTester(tester);
|
|
|
|
final controller = ScrollController(initialScrollOffset: 280.0);
|
|
addTearDown(controller.dispose);
|
|
final GlobalKey forwardAppBarKey = GlobalKey(debugLabel: 'forward app bar');
|
|
final forwardChildren = List<Widget>.generate(10, (int i) {
|
|
return SizedBox(
|
|
height: 200.0,
|
|
child: Text('Forward Item $i', textDirection: TextDirection.ltr),
|
|
);
|
|
});
|
|
final backwardChildren = List<Widget>.generate(10, (int i) {
|
|
return SizedBox(
|
|
height: 200.0,
|
|
child: Text('Backward Item $i', textDirection: TextDirection.ltr),
|
|
);
|
|
});
|
|
await tester.pumpWidget(
|
|
Semantics(
|
|
textDirection: TextDirection.ltr,
|
|
child: Directionality(
|
|
textDirection: TextDirection.ltr,
|
|
child: Localizations(
|
|
locale: const Locale('en', 'us'),
|
|
delegates: const <LocalizationsDelegate<dynamic>>[
|
|
DefaultWidgetsLocalizations.delegate,
|
|
DefaultMaterialLocalizations.delegate,
|
|
],
|
|
child: MediaQuery(
|
|
data: const MediaQueryData(),
|
|
child: Scrollable(
|
|
controller: controller,
|
|
viewportBuilder: (BuildContext context, ViewportOffset offset) {
|
|
return Viewport(
|
|
offset: offset,
|
|
center: forwardAppBarKey,
|
|
slivers: <Widget>[
|
|
SliverList.list(children: backwardChildren),
|
|
const SliverAppBar(
|
|
pinned: true,
|
|
expandedHeight: 100.0,
|
|
flexibleSpace: FlexibleSpaceBar(
|
|
title: Text('Backward app bar', textDirection: TextDirection.ltr),
|
|
),
|
|
),
|
|
SliverAppBar(
|
|
pinned: true,
|
|
key: forwardAppBarKey,
|
|
expandedHeight: 100.0,
|
|
flexibleSpace: const FlexibleSpaceBar(
|
|
title: Text('Forward app bar', textDirection: TextDirection.ltr),
|
|
),
|
|
),
|
|
SliverList.list(children: forwardChildren),
|
|
],
|
|
);
|
|
},
|
|
),
|
|
),
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
// 'Forward Item 0' is covered by app bar.
|
|
expect(
|
|
semantics,
|
|
hasSemantics(
|
|
TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
textDirection: TextDirection.ltr,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(),
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.namesRoute,
|
|
SemanticsFlag.isHeader,
|
|
],
|
|
label: 'Forward app bar',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
TestSemantics(
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
SemanticsAction.scrollToOffset,
|
|
],
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Forward Item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Forward Item 1',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Forward Item 2',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Forward Item 3',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Forward Item 4',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Forward Item 5',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
ignoreTransform: true,
|
|
ignoreRect: true,
|
|
ignoreId: true,
|
|
),
|
|
);
|
|
|
|
controller.jumpTo(-880.0);
|
|
await tester.pumpAndSettle();
|
|
|
|
// 'Backward Item 0' is covered by app bar.
|
|
expect(
|
|
semantics,
|
|
hasSemantics(
|
|
TestSemantics.root(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
textDirection: TextDirection.ltr,
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.hasImplicitScrolling],
|
|
actions: <SemanticsAction>[
|
|
SemanticsAction.scrollUp,
|
|
SemanticsAction.scrollDown,
|
|
SemanticsAction.scrollToOffset,
|
|
],
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Backward Item 5',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Backward Item 4',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Backward Item 3',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Backward Item 2',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
label: 'Backward Item 1',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[SemanticsFlag.isHidden],
|
|
label: 'Backward Item 0',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
TestSemantics(
|
|
tags: <SemanticsTag>[RenderViewport.excludeFromScrolling],
|
|
children: <TestSemantics>[
|
|
TestSemantics(),
|
|
TestSemantics(
|
|
children: <TestSemantics>[
|
|
TestSemantics(
|
|
flags: <SemanticsFlag>[
|
|
SemanticsFlag.namesRoute,
|
|
SemanticsFlag.isHeader,
|
|
],
|
|
label: 'Backward app bar',
|
|
textDirection: TextDirection.ltr,
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
ignoreTransform: true,
|
|
ignoreRect: true,
|
|
ignoreId: true,
|
|
),
|
|
);
|
|
|
|
semantics.dispose();
|
|
},
|
|
);
|
|
}
|