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Fix draggable scrollable sheet scroll notification (#45083)

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This commit is contained in:
Takeshi Tsukamoto 2019-11-23 14:48:38 +09:00 committed by Dan Field
parent 5fb790e6ed
commit a3eeb51a1b
2 changed files with 58 additions and 8 deletions
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2
packages/flutter/lib/src/widgets/draggable_scrollable_sheet.dart
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@ -490,6 +490,8 @@ class _DraggableScrollableSheetScrollPosition
velocity = ballisticController.velocity + (physics.tolerance.velocity * ballisticController.velocity.sign); velocity = ballisticController.velocity + (physics.tolerance.velocity * ballisticController.velocity.sign);
super.goBallistic(velocity); super.goBallistic(velocity);
ballisticController.stop(); ballisticController.stop();
} else if (ballisticController.isCompleted) {
super.goBallistic(0);
} }
} }

64
packages/flutter/test/widgets/draggable_scrollable_sheet_test.dart
View File

@ -15,6 +15,7 @@ void main() {
double minChildSize = .25, double minChildSize = .25,
double itemExtent, double itemExtent,
Key containerKey, Key containerKey,
NotificationListenerCallback<ScrollNotification> onScrollNotification,
}) { }) {
return Directionality( return Directionality(
textDirection: TextDirection.ltr, textDirection: TextDirection.ltr,
@ -29,14 +30,17 @@ void main() {
minChildSize: minChildSize, minChildSize: minChildSize,
initialChildSize: initialChildSize, initialChildSize: initialChildSize,
builder: (BuildContext context, ScrollController scrollController) { builder: (BuildContext context, ScrollController scrollController) {
return Container( return NotificationListener<ScrollNotification>(
key: containerKey, onNotification: onScrollNotification,
color: const Color(0xFFABCDEF), child: Container(
child: ListView.builder( key: containerKey,
controller: scrollController, color: const Color(0xFFABCDEF),
itemExtent: itemExtent, child: ListView.builder(
itemCount: itemCount, controller: scrollController,
itemBuilder: (BuildContext context, int index) => Text('Item $index'), itemExtent: itemExtent,
itemCount: itemCount,
itemBuilder: (BuildContext context, int index) => Text('Item $index'),
),
), ),
); );
}, },
@ -260,5 +264,49 @@ void main() {
debugDefaultTargetPlatformOverride = null; debugDefaultTargetPlatformOverride = null;
}); });
testWidgets('ScrollNotification correctly dispatched when flung without covering its container', (WidgetTester tester) async {
final List<Type> notificationTypes = <Type>[];
await tester.pumpWidget(_boilerplate(
null,
onScrollNotification: (ScrollNotification notification) {
notificationTypes.add(notification.runtimeType);
return false;
},
));
await tester.fling(find.text('Item 1'), const Offset(0, -200), 200);
await tester.pumpAndSettle();
// TODO(itome): Make sure UserScrollNotification and ScrollUpdateNotification are called correctly.
final List<Type> types = <Type>[
ScrollStartNotification,
ScrollEndNotification,
];
expect(notificationTypes, equals(types));
});
testWidgets('ScrollNotification correctly dispatched when flung with contents scroll', (WidgetTester tester) async {
final List<Type> notificationTypes = <Type>[];
await tester.pumpWidget(_boilerplate(
null,
onScrollNotification: (ScrollNotification notification) {
notificationTypes.add(notification.runtimeType);
return false;
},
));
await tester.flingFrom(const Offset(0, 325), const Offset(0, -325), 200);
await tester.pumpAndSettle();
final List<Type> types = <Type>[
ScrollStartNotification,
UserScrollNotification,
...List<Type>.filled(5, ScrollUpdateNotification),
ScrollEndNotification,
UserScrollNotification,
];
expect(notificationTypes, types);
});
} }
} }