Unverified Commit 069aabfe authored by Dan Field's avatar Dan Field Committed by GitHub

Draggable Scrollable sheet (#30058)

* Draggable Scrollable sheet
parent 3c9ffbca
......@@ -30,6 +30,7 @@ export 'src/widgets/container.dart';
export 'src/widgets/debug.dart';
export 'src/widgets/dismissible.dart';
export 'src/widgets/drag_target.dart';
export 'src/widgets/draggable_scrollable_sheet.dart';
export 'src/widgets/editable_text.dart';
export 'src/widgets/fade_in_image.dart';
export 'src/widgets/focus_manager.dart';
......
// Copyright 2019 The Flutter 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/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
void main() {
Widget _boilerplate(VoidCallback onButtonPressed) {
return Directionality(
textDirection: TextDirection.ltr,
child: Stack(
children: <Widget>[
FlatButton(
child: const Text('TapHere'),
onPressed: onButtonPressed,
),
DraggableScrollableSheet(
maxChildSize: 1.0,
minChildSize: .25,
builder: (BuildContext context, ScrollController scrollController) {
return Container(
color: const Color(0xFFABCDEF),
child: ListView.builder(
controller: scrollController,
itemCount: 100,
itemBuilder: (BuildContext context, int index) => Text('Item $index'),
),
);
},
),
],
),
);
}
for (TargetPlatform platform in TargetPlatform.values) {
group('$platform Scroll Physics', () {
debugDefaultTargetPlatformOverride = platform;
testWidgets('Can be dragged up without covering its container', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 31'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, -200));
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 31'), findsOneWidget);
});
testWidgets('Can be dragged down when not full height', (WidgetTester tester) async {
await tester.pumpWidget(_boilerplate(null));
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, 325));
await tester.pumpAndSettle();
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 36'), findsNothing);
});
testWidgets('Can be dragged up and cover its container and scroll in single motion, and then dragged back down', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.drag(find.text('Item 1'), const Offset(0, -325));
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsOneWidget);
await tester.dragFrom(const Offset(20, 20), const Offset(0, 325));
await tester.pumpAndSettle();
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 18'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
});
testWidgets('Can be flung up gently', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 350);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
});
testWidgets('Can be flung up', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsNothing);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsOneWidget);
});
testWidgets('Can be flung down when not full height', (WidgetTester tester) async {
await tester.pumpWidget(_boilerplate(null));
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 36'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, 325), 2000);
await tester.pumpAndSettle();
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 36'), findsNothing);
});
testWidgets('Can be flung up and then back down', (WidgetTester tester) async {
int taps = 0;
await tester.pumpWidget(_boilerplate(() => taps++));
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, -200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsNothing);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsOneWidget);
await tester.fling(find.text('Item 70'), const Offset(0, 200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 1);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsOneWidget);
expect(find.text('Item 70'), findsNothing);
await tester.fling(find.text('Item 1'), const Offset(0, 200), 2000);
await tester.pumpAndSettle();
expect(find.text('TapHere'), findsOneWidget);
await tester.tap(find.text('TapHere'));
expect(taps, 2);
expect(find.text('Item 1'), findsOneWidget);
expect(find.text('Item 21'), findsNothing);
expect(find.text('Item 70'), findsNothing);
});
debugDefaultTargetPlatformOverride = null;
});
}
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment