Tooltip in a Table detaches its child on mouse move #51152
Description
When Tooltip is in a table, its child is detached when mouse moves, effectively making child disappear.
This does not happen when Tooltip is not in a table, or when the child is not in a Tooltip. The issue is possibly caused by the build method of Tooltip where _mouseIsConnected is switched from false to true.
Also, this issue disappears if the Tooltip is wrapped in an Inkwell.
See below for a unit test with a minimal example. You can also run the MaterialApp on a platform that supports mouse and see the effect.
Minimal example test case
testWidgets(
'Handles tooltip well',
(WidgetTester tester) async {
await tester.pumpWidget(
MaterialApp(
home: Center(
child: Directionality(
textDirection: TextDirection.ltr,
child: Table(
children: const <TableRow>[
TableRow(children: <Widget>[
Tooltip(
message: 'HINT',
child: Text('CONTENT'),
),
])
],
),
),
),
),
);
expect(find.text('CONTENT'), findsOneWidget);
final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
await gesture.addPointer(location: const Offset(20, 20));
addTearDown(gesture.removePointer);
await tester.pumpAndSettle();
await gesture.moveTo(const Offset(10, 10));
expect(tester.renderObject(find.text('CONTENT')).attached, isTrue); // Breaks currently
},
);[✓] Flutter (Channel master, v1.15.4-pre.124, on Linux, locale en_US.UTF-8)
• Flutter version 1.15.4-pre.124 at /usr/local/google/home/tongmu/dev/flutter
• Framework revision 0b5667ac12 (2 hours ago), 2020-02-20 17:27:02 -0500
• Engine revision 84dc383b64
• Dart version 2.8.0 (build 2.8.0-dev.9.0 707ecda05e)
Related issue:
- Found in, and blocking Fixed onSort bug in data_table.dart #43735