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Add:创建 flutter go web 版

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ryan
2019-08-13 20:38:46 +08:00
parent 64513b59c1
commit da67ccf5a8
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packages/flutter_web/test/widgets/semantics_9_test.dart Normal file
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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter_web/material.dart';
import 'package:flutter_web/widgets.dart';
import 'package:flutter_web/rendering.dart';
import 'package:flutter_web_test/flutter_web_test.dart';
import 'semantics_tester.dart';
void main() {
group('BlockSemantics', () {
testWidgets('hides semantic nodes of siblings',
(WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(Stack(
textDirection: TextDirection.ltr,
children: <Widget>[
Semantics(
label: 'layer#1',
textDirection: TextDirection.ltr,
child: Container(),
),
const BlockSemantics(),
Semantics(
label: 'layer#2',
textDirection: TextDirection.ltr,
child: Container(),
),
],
));
expect(semantics, isNot(includesNodeWith(label: 'layer#1')));
await tester.pumpWidget(Stack(
textDirection: TextDirection.ltr,
children: <Widget>[
Semantics(
label: 'layer#1',
textDirection: TextDirection.ltr,
child: Container(),
),
],
));
expect(semantics, includesNodeWith(label: 'layer#1'));
semantics.dispose();
});
testWidgets(
'does not hides semantic nodes of siblings outside the current semantic boundary',
(WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
await tester.pumpWidget(Directionality(
textDirection: TextDirection.ltr,
child: Stack(
children: <Widget>[
Semantics(
label: '#1',
child: Container(),
),
Semantics(
label: '#2',
container: true,
explicitChildNodes: true,
child: Stack(
children: <Widget>[
Semantics(
label: 'NOT#2.1',
child: Container(),
),
Semantics(
label: '#2.2',
child: BlockSemantics(
child: Semantics(
container: true,
label: '#2.2.1',
child: Container(),
),
),
),
Semantics(
label: '#2.3',
child: Container(),
),
],
),
),
Semantics(
label: '#3',
child: Container(),
),
],
)));
expect(semantics, includesNodeWith(label: '#1'));
expect(semantics, includesNodeWith(label: '#2'));
expect(semantics, isNot(includesNodeWith(label: 'NOT#2.1')));
expect(semantics, includesNodeWith(label: '#2.2'));
expect(semantics, includesNodeWith(label: '#2.2.1'));
expect(semantics, includesNodeWith(label: '#2.3'));
expect(semantics, includesNodeWith(label: '#3'));
semantics.dispose();
});
testWidgets(
'node is semantic boundary and blocking previously painted nodes',
(WidgetTester tester) async {
final SemanticsTester semantics = SemanticsTester(tester);
final GlobalKey stackKey = GlobalKey();
await tester.pumpWidget(Directionality(
textDirection: TextDirection.ltr,
child: Stack(
key: stackKey,
children: <Widget>[
Semantics(
label: 'NOT#1',
child: Container(),
),
BoundaryBlockSemantics(
child: Semantics(
label: '#2.1',
child: Container(),
)),
Semantics(
label: '#3',
child: Container(),
),
],
)));
expect(semantics, isNot(includesNodeWith(label: 'NOT#1')));
expect(semantics, includesNodeWith(label: '#2.1'));
expect(semantics, includesNodeWith(label: '#3'));
semantics.dispose();
});
});
}
class BoundaryBlockSemantics extends SingleChildRenderObjectWidget {
const BoundaryBlockSemantics({Key key, Widget child})
: super(key: key, child: child);
@override
RenderBoundaryBlockSemantics createRenderObject(BuildContext context) =>
RenderBoundaryBlockSemantics();
}
class RenderBoundaryBlockSemantics extends RenderProxyBox {
RenderBoundaryBlockSemantics({RenderBox child}) : super(child);
@override
void describeSemanticsConfiguration(SemanticsConfiguration config) {
super.describeSemanticsConfiguration(config);
config
..isBlockingSemanticsOfPreviouslyPaintedNodes = true
..isSemanticBoundary = true;
}
}