| // Copyright 2014 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 'dart:async'; |
| import 'dart:ui' as ui; |
| |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/gestures.dart'; |
| |
| import '../flutter_test_alternative.dart'; |
| |
| typedef HandleEventCallback = void Function(PointerEvent event); |
| |
| class TestGestureFlutterBinding extends BindingBase with GestureBinding { |
| HandleEventCallback callback; |
| |
| @override |
| void handleEvent(PointerEvent event, HitTestEntry entry) { |
| if (callback != null) |
| callback(event); |
| super.handleEvent(event, entry); |
| } |
| |
| static const ui.PointerDataPacket packet = ui.PointerDataPacket( |
| data: <ui.PointerData>[ |
| ui.PointerData(change: ui.PointerChange.down), |
| ui.PointerData(change: ui.PointerChange.up), |
| ], |
| ); |
| |
| Future<void> test(VoidCallback callback) { |
| assert(callback != null); |
| return _binding.lockEvents(() async { |
| ui.window.onPointerDataPacket(packet); |
| callback(); |
| }); |
| } |
| } |
| |
| TestGestureFlutterBinding _binding = TestGestureFlutterBinding(); |
| |
| void ensureTestGestureBinding() { |
| _binding ??= TestGestureFlutterBinding(); |
| assert(GestureBinding.instance != null); |
| } |
| |
| void main() { |
| setUp(ensureTestGestureBinding); |
| |
| test('Pointer events are locked during reassemble', () async { |
| final List<PointerEvent> events = <PointerEvent>[]; |
| _binding.callback = events.add; |
| bool tested = false; |
| await _binding.test(() { |
| expect(events.length, 0); |
| tested = true; |
| }); |
| expect(tested, isTrue); |
| expect(events.length, 2); |
| expect(events[0].runtimeType, equals(PointerDownEvent)); |
| expect(events[1].runtimeType, equals(PointerUpEvent)); |
| }); |
| } |