// 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/material.dart'; import 'package:flutter/widgets.dart'; import 'package:flutter/rendering.dart'; import 'package:flutter_test/flutter_test.dart'; import 'semantics_tester.dart'; void main() { group('BlockSemantics', () { testWidgets('hides semantic nodes of siblings', (WidgetTester tester) async { final SemanticsTester semantics = new SemanticsTester(tester); await tester.pumpWidget(new Stack( children: <Widget>[ new Semantics( label: 'layer#1', child: new Container(), ), const BlockSemantics(), new Semantics( label: 'layer#2', child: new Container(), ), ], )); expect(semantics, isNot(includesNodeWith(label: 'layer#1'))); await tester.pumpWidget(new Stack( children: <Widget>[ new Semantics( label: 'layer#1', child: new 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 = new SemanticsTester(tester); await tester.pumpWidget(new Stack( children: <Widget>[ new Semantics( label: '#1', child: new Container(), ), new Semantics( label: '#2', container: true, child: new Stack( children: <Widget>[ new Semantics( label: 'NOT#2.1', child: new Container(), ), new Semantics( label: '#2.2', child: new BlockSemantics( child: new Semantics( container: true, label: '#2.2.1', child: new Container(), ), ), ), new Semantics( label: '#2.3', child: new Container(), ), ], ), ), new Semantics( label: '#3', child: new 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 = new SemanticsTester(tester); final GlobalKey stackKey = new GlobalKey(); await tester.pumpWidget(new Stack( key: stackKey, children: <Widget>[ new Semantics( label: 'NOT#1', child: new Container(), ), new BoundaryBlockSemantics( child: new Semantics( label: '#2.1', child: new Container(), ) ), new Semantics( label: '#3', child: new 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) => new RenderBoundaryBlockSemantics(); } class RenderBoundaryBlockSemantics extends RenderProxyBox { RenderBoundaryBlockSemantics({ RenderBox child }) : super(child); @override bool get isBlockingSemanticsOfPreviouslyPaintedNodes => true; @override bool get isSemanticBoundary => true; }