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Add button semantics to CupertinoButton (#12715)

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fixes #11992
This commit is contained in:
amirh 2017-10-25 14:28:32 -07:00 committed by GitHub
parent cbfed1960f
commit 3365b01f9a
2 changed files with 73 additions and 34 deletions
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69
packages/flutter/lib/src/cupertino/button.dart
View File

@ -195,39 +195,42 @@ class _CupertinoButtonState extends State<CupertinoButton> with SingleTickerProv
onTapUp: enabled ? _handleTapUp : null,
onTapCancel: enabled ? _handleTapCancel : null,
onTap: widget.onPressed,
child: new ConstrainedBox(
constraints: widget.minSize == null
? const BoxConstraints()
: new BoxConstraints(
minWidth: widget.minSize,
minHeight: widget.minSize,
),
child: new FadeTransition(
opacity: _opacityTween.animate(new CurvedAnimation(
parent: _animationController,
curve: Curves.decelerate,
)),
child: new DecoratedBox(
decoration: new BoxDecoration(
borderRadius: widget.borderRadius,
color: backgroundColor != null && !enabled
? _kDisabledBackground
: backgroundColor,
),
child: new Padding(
padding: widget.padding ?? (backgroundColor != null
? _kBackgroundButtonPadding
: _kButtonPadding),
child: new Center(
widthFactor: 1.0,
heightFactor: 1.0,
child: new DefaultTextStyle(
style: backgroundColor != null
? _kBackgroundButtonTextStyle
: enabled
? _kButtonTextStyle
: _kDisabledButtonTextStyle,
child: widget.child,
child: new Semantics(
button: true,
child: new ConstrainedBox(
constraints: widget.minSize == null
? const BoxConstraints()
: new BoxConstraints(
minWidth: widget.minSize,
minHeight: widget.minSize,
),
child: new FadeTransition(
opacity: _opacityTween.animate(new CurvedAnimation(
parent: _animationController,
curve: Curves.decelerate,
)),
child: new DecoratedBox(
decoration: new BoxDecoration(
borderRadius: widget.borderRadius,
color: backgroundColor != null && !enabled
? _kDisabledBackground
: backgroundColor,
),
child: new Padding(
padding: widget.padding ?? (backgroundColor != null
? _kBackgroundButtonPadding
: _kButtonPadding),
child: new Center(
widthFactor: 1.0,
heightFactor: 1.0,
child: new DefaultTextStyle(
style: backgroundColor != null
? _kBackgroundButtonTextStyle
: enabled
? _kButtonTextStyle
: _kDisabledButtonTextStyle,
child: widget.child,
),
),
),
),

38
packages/flutter/test/cupertino/button_test.dart
View File

@ -2,10 +2,15 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:ui' show SemanticsFlags;
import 'package:flutter/rendering.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/scheduler.dart';
import 'package:flutter_test/flutter_test.dart';
import '../widgets/semantics_tester.dart';
const TextStyle testStyle = const TextStyle(
fontFamily: 'Ahem',
fontSize: 10.0,
@ -164,6 +169,37 @@ void main() {
));
expect(opacity.opacity, pressedOpacity);
});
testWidgets('Cupertino button is semantically a button', (WidgetTester tester) async {
final SemanticsTester semantics = new SemanticsTester(tester);
await tester.pumpWidget(
boilerplate(
child: new Center(
child: new CupertinoButton(
onPressed: () { },
child: const Text('ABC')
),
),
),
);
expect(semantics, hasSemantics(
new TestSemantics.root(
children: <TestSemantics>[
new TestSemantics.rootChild(
actions: SemanticsAction.tap.index,
label: 'ABC',
flags: SemanticsFlags.isButton.index,
)
],
),
ignoreId: true,
ignoreRect: true,
ignoreTransform: true,
));
semantics.dispose();
});
}
Widget boilerplate({ Widget child }) {
@ -171,4 +207,4 @@ Widget boilerplate({ Widget child }) {
textDirection: TextDirection.ltr,
child: new Center(child: child),
);
}
}