131 lines
3.0 KiB
Dart
131 lines
3.0 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/widgets.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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testWidgets('can cease to be semantics boundary after markNeedsSemanticsUpdate() has already been called once', (WidgetTester tester) async {
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final SemanticsTester semantics = SemanticsTester(tester);
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await tester.pumpWidget(
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buildTestWidgets(
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excludeSemantics: false,
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label: 'label',
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isSemanticsBoundary: true,
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),
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);
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// The following should not trigger an assert.
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await tester.pumpWidget(
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buildTestWidgets(
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excludeSemantics: true,
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label: 'label CHANGED',
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isSemanticsBoundary: false,
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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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Widget buildTestWidgets({
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required bool excludeSemantics,
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required String label,
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required bool isSemanticsBoundary,
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}) {
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return Directionality(
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textDirection: TextDirection.ltr,
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child: Semantics(
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label: 'container',
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container: true,
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child: ExcludeSemantics(
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excluding: excludeSemantics,
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child: TestWidget(
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label: label,
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isSemanticBoundary: isSemanticsBoundary,
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child: Column(
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children: <Widget>[
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Semantics(
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label: 'child1',
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),
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Semantics(
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label: 'child2',
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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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class TestWidget extends SingleChildRenderObjectWidget {
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const TestWidget({
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super.key,
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required Widget super.child,
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required this.label,
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required this.isSemanticBoundary,
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});
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final String label;
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final bool isSemanticBoundary;
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@override
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RenderTest createRenderObject(BuildContext context) {
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return RenderTest()
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..label = label
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..isSemanticBoundary = isSemanticBoundary;
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}
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@override
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void updateRenderObject(BuildContext context, RenderTest renderObject) {
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renderObject
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..label = label
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..isSemanticBoundary = isSemanticBoundary;
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}
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}
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class RenderTest extends RenderProxyBox {
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@override
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void describeSemanticsConfiguration(SemanticsConfiguration config) {
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super.describeSemanticsConfiguration(config);
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if (!isSemanticBoundary) {
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return;
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}
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config
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..isSemanticBoundary = isSemanticBoundary
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..label = label
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..textDirection = TextDirection.ltr;
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}
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String get label => _label;
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String _label = '<>';
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set label(String value) {
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if (value == _label) {
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return;
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}
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_label = value;
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markNeedsSemanticsUpdate();
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}
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bool get isSemanticBoundary => _isSemanticBoundary;
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bool _isSemanticBoundary = false;
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set isSemanticBoundary(bool value) {
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if (_isSemanticBoundary == value) {
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return;
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}
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_isSemanticBoundary = value;
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markNeedsSemanticsUpdate();
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}
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}
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