| // 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 'package:flutter/cupertino.dart'; |
| import 'package:flutter/foundation.dart'; |
| import 'package:flutter/gestures.dart'; |
| import 'package:flutter/material.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| Offset textOffsetToPosition(RenderParagraph paragraph, int offset) { |
| const Rect caret = Rect.fromLTWH(0.0, 0.0, 2.0, 20.0); |
| final Offset localOffset = paragraph.getOffsetForCaret(TextPosition(offset: offset), caret); |
| return paragraph.localToGlobal(localOffset); |
| } |
| |
| void main() { |
| testWidgets('SelectionArea uses correct selection controls', (WidgetTester tester) async { |
| await tester.pumpWidget(const MaterialApp( |
| home: SelectionArea( |
| child: Text('abc'), |
| ), |
| )); |
| final SelectableRegion region = tester.widget<SelectableRegion>(find.byType(SelectableRegion)); |
| |
| switch (defaultTargetPlatform) { |
| case TargetPlatform.android: |
| case TargetPlatform.fuchsia: |
| expect(region.selectionControls, materialTextSelectionControls); |
| break; |
| case TargetPlatform.iOS: |
| expect(region.selectionControls, cupertinoTextSelectionControls); |
| break; |
| case TargetPlatform.linux: |
| case TargetPlatform.windows: |
| expect(region.selectionControls, desktopTextSelectionControls); |
| break; |
| case TargetPlatform.macOS: |
| expect(region.selectionControls, cupertinoDesktopTextSelectionControls); |
| break; |
| } |
| }, variant: TargetPlatformVariant.all()); |
| |
| testWidgets('onSelectionChange is called when the selection changes', (WidgetTester tester) async { |
| SelectedContent? content; |
| |
| await tester.pumpWidget(MaterialApp( |
| home: SelectionArea( |
| child: const Text('How are you'), |
| onSelectionChanged: (SelectedContent? selectedContent) => content = selectedContent, |
| ), |
| )); |
| final RenderParagraph paragraph = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('How are you'), matching: find.byType(RichText))); |
| final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph, 4), kind: PointerDeviceKind.mouse); |
| expect(content, isNull); |
| addTearDown(gesture.removePointer); |
| await tester.pump(); |
| |
| await gesture.moveTo(textOffsetToPosition(paragraph, 7)); |
| await gesture.up(); |
| await tester.pump(); |
| expect(content, isNotNull); |
| expect(content!.plainText, 'are'); |
| |
| // Backwards selection. |
| await gesture.down(textOffsetToPosition(paragraph, 3)); |
| expect(content, isNull); |
| await gesture.moveTo(textOffsetToPosition(paragraph, 0)); |
| await gesture.up(); |
| await tester.pump(); |
| expect(content, isNotNull); |
| expect(content!.plainText, 'How'); |
| }); |
| } |