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// 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:ui' as ui;
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'clipboard_utils.dart';
import 'keyboard_utils.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);
}
Offset globalize(Offset point, RenderBox box) {
return box.localToGlobal(point);
}
void main() {
TestWidgetsFlutterBinding.ensureInitialized();
final MockClipboard mockClipboard = MockClipboard();
setUp(() async {
TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.setMockMethodCallHandler(SystemChannels.platform, mockClipboard.handleMethodCall);
await Clipboard.setData(const ClipboardData(text: 'empty'));
});
tearDown(() {
TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger.setMockMethodCallHandler(SystemChannels.platform, null);
});
testWidgets('mouse can select multiple widgets', (WidgetTester tester) async {
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
await gesture.moveTo(textOffsetToPosition(paragraph1, 4));
await tester.pump();
expect(paragraph1.selections[0], const TextSelection(baseOffset: 2, extentOffset: 4));
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph2, 5));
// Should select the rest of paragraph 1.
expect(paragraph1.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph2.selections[0], const TextSelection(baseOffset: 0, extentOffset: 5));
final RenderParagraph paragraph3 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 3'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph3, 3));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph2.selections[0], const TextSelection(baseOffset: 0, extentOffset: 6));
expect(paragraph3.selections[0], const TextSelection(baseOffset: 0, extentOffset: 3));
await gesture.up();
});
testWidgets('mouse can select multiple widgets - horizontal', (WidgetTester tester) async {
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
scrollDirection: Axis.horizontal,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
await gesture.moveTo(textOffsetToPosition(paragraph1, 4));
await tester.pump();
expect(paragraph1.selections[0], const TextSelection(baseOffset: 2, extentOffset: 4));
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph2, 5) + const Offset(0, 5));
// Should select the rest of paragraph 1.
expect(paragraph1.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph2.selections[0], const TextSelection(baseOffset: 0, extentOffset: 5));
await gesture.up();
});
testWidgets('select to scroll forward', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary.
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(0, 20));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
// Scroll to the end.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(controller.offset, 4200.0);
final RenderParagraph paragraph99 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 99'), matching: find.byType(RichText)));
final RenderParagraph paragraph98 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 98'), matching: find.byType(RichText)));
final RenderParagraph paragraph97 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 97'), matching: find.byType(RichText)));
final RenderParagraph paragraph96 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 96'), matching: find.byType(RichText)));
expect(paragraph99.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph98.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph97.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph96.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
await gesture.up();
});
testWidgets('select to scroll works for small scrollable', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: Scaffold(
body: SizedBox(
height: 10,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
),
),
));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(0, 20));
await tester.pump();
await tester.pump(const Duration(milliseconds: 100));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(milliseconds: 100));
expect(controller.offset > previousOffset, isTrue);
await gesture.up();
// Shouldn't be stuck if gesture is up.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(tester.takeException(), isNull);
});
testWidgets('select to scroll backward', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
controller.jumpTo(4000);
await tester.pumpAndSettle();
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(ListView)), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
expect(controller.offset, 4000);
double previousOffset = controller.offset;
await gesture.moveTo(tester.getTopLeft(find.byType(ListView)) + const Offset(0, -20));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset < previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset < previousOffset, isTrue);
// Scroll to the beginning.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(controller.offset, 0.0);
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 2'), matching: find.byType(RichText)));
final RenderParagraph paragraph3 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 3'), matching: find.byType(RichText)));
expect(paragraph0.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
expect(paragraph2.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
expect(paragraph3.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
});
testWidgets('select to scroll forward - horizontal', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
scrollDirection: Axis.horizontal,
controller: controller,
itemCount: 10,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(20, 0));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
// Scroll to the end.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(controller.offset, 2080.0);
final RenderParagraph paragraph9 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 9'), matching: find.byType(RichText)));
final RenderParagraph paragraph8 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 8'), matching: find.byType(RichText)));
final RenderParagraph paragraph7 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 7'), matching: find.byType(RichText)));
expect(paragraph9.selections[0], const TextSelection(baseOffset: 0, extentOffset: 6));
expect(paragraph8.selections[0], const TextSelection(baseOffset: 0, extentOffset: 6));
expect(paragraph7.selections[0], const TextSelection(baseOffset: 0, extentOffset: 6));
await gesture.up();
});
testWidgets('select to scroll backward - horizontal', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
scrollDirection: Axis.horizontal,
controller: controller,
itemCount: 10,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
controller.jumpTo(2080);
await tester.pumpAndSettle();
final TestGesture gesture = await tester.startGesture(tester.getCenter(find.byType(ListView)), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
expect(controller.offset, 2080);
double previousOffset = controller.offset;
await gesture.moveTo(tester.getTopLeft(find.byType(ListView)) + const Offset(-10, 0));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset < previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset < previousOffset, isTrue);
// Scroll to the beginning.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(controller.offset, 0.0);
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 2'), matching: find.byType(RichText)));
expect(paragraph0.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
expect(paragraph2.selections[0], const TextSelection(baseOffset: 6, extentOffset: 0));
await gesture.up();
});
testWidgets('preserve selection when out of view.', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
controller.jumpTo(2000);
await tester.pumpAndSettle();
expect(find.text('Item 50'), findsOneWidget);
RenderParagraph paragraph50 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 50'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph50, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await tester.pump();
await gesture.moveTo(textOffsetToPosition(paragraph50, 4));
await gesture.up();
expect(paragraph50.selections[0], const TextSelection(baseOffset: 2, extentOffset: 4));
controller.jumpTo(0);
await tester.pumpAndSettle();
expect(find.text('Item 50'), findsNothing);
controller.jumpTo(2000);
await tester.pumpAndSettle();
expect(find.text('Item 50'), findsOneWidget);
paragraph50 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 50'), matching: find.byType(RichText)));
expect(paragraph50.selections[0], const TextSelection(baseOffset: 2, extentOffset: 4));
controller.jumpTo(4000);
await tester.pumpAndSettle();
expect(find.text('Item 50'), findsNothing);
controller.jumpTo(2000);
await tester.pumpAndSettle();
expect(find.text('Item 50'), findsOneWidget);
paragraph50 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 50'), matching: find.byType(RichText)));
expect(paragraph50.selections[0], const TextSelection(baseOffset: 2, extentOffset: 4));
});
testWidgets('can select all non-Apple', (WidgetTester tester) async {
final FocusNode node = FocusNode();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
node.requestFocus();
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.keyA, control: true));
await tester.pump();
for (int i = 0; i < 13; i += 1) {
final RenderParagraph paragraph = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item $i'), matching: find.byType(RichText)));
expect(paragraph.selections[0], TextSelection(baseOffset: 0, extentOffset: 'Item $i'.length));
}
expect(find.text('Item 13'), findsNothing);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.android, TargetPlatform.windows, TargetPlatform.linux, TargetPlatform.fuchsia }));
testWidgets('can select all - Apple', (WidgetTester tester) async {
final FocusNode node = FocusNode();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
node.requestFocus();
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.keyA, meta: true));
await tester.pump();
for (int i = 0; i < 13; i += 1) {
final RenderParagraph paragraph = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item $i'), matching: find.byType(RichText)));
expect(paragraph.selections[0], TextSelection(baseOffset: 0, extentOffset: 'Item $i'.length));
}
expect(find.text('Item 13'), findsNothing);
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
testWidgets('select to scroll by dragging selection handles forward', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
// Long press to bring up the selection handles.
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2));
addTearDown(gesture.removePointer);
await tester.pump(const Duration(milliseconds: 500));
await gesture.up();
expect(paragraph0.selections[0], const TextSelection(baseOffset: 0, extentOffset: 4));
final List<TextBox> boxes = paragraph0.getBoxesForSelection(paragraph0.selections[0]);
expect(boxes.length, 1);
// Find end handle.
final Offset handlePos = globalize(boxes[0].toRect().bottomRight, paragraph0);
await gesture.down(handlePos);
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(0, 40));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
// Scroll to the end.
await tester.pumpAndSettle(const Duration(seconds: 1));
expect(controller.offset, 4200.0);
final RenderParagraph paragraph99 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 99'), matching: find.byType(RichText)));
final RenderParagraph paragraph98 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 98'), matching: find.byType(RichText)));
final RenderParagraph paragraph97 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 97'), matching: find.byType(RichText)));
final RenderParagraph paragraph96 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 96'), matching: find.byType(RichText)));
expect(paragraph99.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph98.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph97.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
expect(paragraph96.selections[0], const TextSelection(baseOffset: 0, extentOffset: 7));
await gesture.up();
});
testWidgets('select to scroll by dragging start selection handle stops scroll when released', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
// Long press to bring up the selection handles.
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2));
addTearDown(gesture.removePointer);
await tester.pump(const Duration(milliseconds: 500));
await gesture.up();
expect(paragraph0.selections[0], const TextSelection(baseOffset: 0, extentOffset: 4));
final List<TextBox> boxes = paragraph0.getBoxesForSelection(paragraph0.selections[0]);
expect(boxes.length, 1);
// Find start handle.
final Offset handlePos = globalize(boxes[0].toRect().bottomLeft, paragraph0);
await gesture.down(handlePos);
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary.
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(0, 40));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
// Release handle should stop scrolling.
await gesture.up();
// Last scheduled scroll.
await tester.pump();
await tester.pump(const Duration(seconds: 1));
previousOffset = controller.offset;
await tester.pumpAndSettle();
expect(controller.offset, previousOffset);
});
testWidgets('select to scroll by dragging end selection handle stops scroll when released', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
// Long press to bring up the selection handles.
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2));
addTearDown(gesture.removePointer);
await tester.pump(const Duration(milliseconds: 500));
await gesture.up();
expect(paragraph0.selections[0], const TextSelection(baseOffset: 0, extentOffset: 4));
final List<TextBox> boxes = paragraph0.getBoxesForSelection(paragraph0.selections[0]);
expect(boxes.length, 1);
final Offset handlePos = globalize(boxes[0].toRect().bottomRight, paragraph0);
await gesture.down(handlePos);
expect(controller.offset, 0.0);
double previousOffset = controller.offset;
// Scrollable only auto scroll if the drag passes the boundary
await gesture.moveTo(tester.getBottomRight(find.byType(ListView)) + const Offset(0, 40));
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
await tester.pump();
await tester.pump(const Duration(seconds: 1));
expect(controller.offset > previousOffset, isTrue);
previousOffset = controller.offset;
// Release handle should stop scrolling.
await gesture.up();
// Last scheduled scroll.
await tester.pump();
await tester.pump(const Duration(seconds: 1));
previousOffset = controller.offset;
await tester.pumpAndSettle();
expect(controller.offset, previousOffset);
});
testWidgets('keyboard selection should auto scroll - vertical', (WidgetTester tester) async {
final FocusNode node = FocusNode();
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
final RenderParagraph paragraph9 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 9'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph9, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await gesture.moveTo(textOffsetToPosition(paragraph9, 4) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
await tester.pump();
expect(paragraph9.selections.length, 1);
expect(paragraph9.selections[0].start, 2);
expect(paragraph9.selections[0].end, 4);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
final RenderParagraph paragraph10 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 10'), matching: find.byType(RichText)));
expect(paragraph10.selections.length, 1);
expect(paragraph10.selections[0].start, 0);
expect(paragraph10.selections[0].end, 4);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
final RenderParagraph paragraph11 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 11'), matching: find.byType(RichText)));
expect(paragraph11.selections.length, 1);
expect(paragraph11.selections[0].start, 0);
expect(paragraph11.selections[0].end, 4);
expect(controller.offset, 0.0);
// Should start scrolling.
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
final RenderParagraph paragraph12 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 12'), matching: find.byType(RichText)));
expect(paragraph12.selections.length, 1);
expect(paragraph12.selections[0].start, 0);
expect(paragraph12.selections[0].end, 4);
expect(controller.offset, 24.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
final RenderParagraph paragraph13 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 13'), matching: find.byType(RichText)));
expect(paragraph13.selections.length, 1);
expect(paragraph13.selections[0].start, 0);
expect(paragraph13.selections[0].end, 4);
expect(controller.offset, 72.0);
}, variant: TargetPlatformVariant.all());
testWidgets('keyboard selection should auto scroll - vertical reversed', (WidgetTester tester) async {
final FocusNode node = FocusNode();
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
reverse: true,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
final RenderParagraph paragraph9 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 9'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph9, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await gesture.moveTo(textOffsetToPosition(paragraph9, 4) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
await tester.pump();
expect(paragraph9.selections.length, 1);
expect(paragraph9.selections[0].start, 2);
expect(paragraph9.selections[0].end, 4);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph10 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 10'), matching: find.byType(RichText)));
expect(paragraph10.selections.length, 1);
expect(paragraph10.selections[0].start, 2);
expect(paragraph10.selections[0].end, 7);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph11 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 11'), matching: find.byType(RichText)));
expect(paragraph11.selections.length, 1);
expect(paragraph11.selections[0].start, 2);
expect(paragraph11.selections[0].end, 7);
expect(controller.offset, 0.0);
// Should start scrolling.
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph12 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 12'), matching: find.byType(RichText)));
expect(paragraph12.selections.length, 1);
expect(paragraph12.selections[0].start, 2);
expect(paragraph12.selections[0].end, 7);
expect(controller.offset, 24.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph13 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 13'), matching: find.byType(RichText)));
expect(paragraph13.selections.length, 1);
expect(paragraph13.selections[0].start, 2);
expect(paragraph13.selections[0].end, 7);
expect(controller.offset, 72.0);
}, variant: TargetPlatformVariant.all());
testWidgets('keyboard selection should auto scroll - horizontal', (WidgetTester tester) async {
final FocusNode node = FocusNode();
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
scrollDirection: Axis.horizontal,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 2'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph2, 0), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await gesture.moveTo(textOffsetToPosition(paragraph2, 1) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
await tester.pump();
expect(paragraph2.selections.length, 1);
expect(paragraph2.selections[0].start, 0);
expect(paragraph2.selections[0].end, 1);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
expect(paragraph2.selections.length, 1);
expect(paragraph2.selections[0].start, 0);
expect(paragraph2.selections[0].end, 6);
expect(controller.offset, 64.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowDown, shift: true));
await tester.pump();
final RenderParagraph paragraph3 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 3'), matching: find.byType(RichText)));
expect(paragraph3.selections.length, 1);
expect(paragraph3.selections[0].start, 0);
expect(paragraph3.selections[0].end, 6);
expect(controller.offset, 352.0);
}, variant: TargetPlatformVariant.all());
testWidgets('keyboard selection should auto scroll - horizontal reversed', (WidgetTester tester) async {
final FocusNode node = FocusNode();
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: node,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
scrollDirection: Axis.horizontal,
reverse: true,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph1, 5) + const Offset(0, 5), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
await gesture.moveTo(textOffsetToPosition(paragraph1, 4) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
await tester.pumpAndSettle();
expect(paragraph1.selections.length, 1);
expect(paragraph1.selections[0].start, 4);
expect(paragraph1.selections[0].end, 5);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
expect(paragraph1.selections.length, 1);
expect(paragraph1.selections[0].start, 0);
expect(paragraph1.selections[0].end, 5);
expect(controller.offset, 0.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph2 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 2'), matching: find.byType(RichText)));
expect(paragraph2.selections.length, 1);
expect(paragraph2.selections[0].start, 0);
expect(paragraph2.selections[0].end, 6);
expect(controller.offset, 64.0);
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.arrowUp, shift: true));
await tester.pump();
final RenderParagraph paragraph3 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 3'), matching: find.byType(RichText)));
expect(paragraph3.selections.length, 1);
expect(paragraph3.selections[0].start, 0);
expect(paragraph3.selections[0].end, 6);
expect(controller.offset, 352.0);
}, variant: TargetPlatformVariant.all());
group('Complex cases', () {
testWidgets('selection starts outside of the scrollable', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: Column(
children: <Widget>[
const Text('Item 0'),
SizedBox(
height: 400,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Inner item $index');
},
),
),
const Text('Item 1'),
],
),
),
));
await tester.pumpAndSettle();
controller.jumpTo(1000);
await tester.pumpAndSettle();
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph1, 2) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
// The entire scrollable should be selected.
expect(paragraph0.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 0, extentOffset: 2));
final RenderParagraph innerParagraph = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Inner item 20'), matching: find.byType(RichText)));
expect(innerParagraph.selections[0], const TextSelection(baseOffset: 0, extentOffset: 13));
// Should not scroll the inner scrollable.
expect(controller.offset, 1000.0);
});
testWidgets('nested scrollables keep selection alive', (WidgetTester tester) async {
final ScrollController outerController = ScrollController();
final ScrollController innerController = ScrollController();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: outerController,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
if (index == 2) {
return SizedBox(
height: 700,
child: ListView.builder(
controller: innerController,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Iteminner $index');
},
),
);
}
return Text('Item $index');
},
),
),
));
await tester.pumpAndSettle();
innerController.jumpTo(1000);
await tester.pumpAndSettle();
RenderParagraph innerParagraph23 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Iteminner 23'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(innerParagraph23, 2) + const Offset(0, 5), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
RenderParagraph innerParagraph24 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Iteminner 24'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(innerParagraph24, 2) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
expect(innerParagraph23.selections[0], const TextSelection(baseOffset: 2, extentOffset: 12));
expect(innerParagraph24.selections[0], const TextSelection(baseOffset: 0, extentOffset: 2));
innerController.jumpTo(2000);
await tester.pumpAndSettle();
expect(find.descendant(of: find.text('Iteminner 23'), matching: find.byType(RichText)), findsNothing);
outerController.jumpTo(2000);
await tester.pumpAndSettle();
expect(find.descendant(of: find.text('Iteminner 23'), matching: find.byType(RichText)), findsNothing);
// Selected item is still kept alive.
expect(find.descendant(of: find.text('Iteminner 23'), matching: find.byType(RichText), skipOffstage: false), findsNothing);
// Selection stays the same after scrolling back.
outerController.jumpTo(0);
await tester.pumpAndSettle();
expect(innerController.offset, 2000.0);
innerController.jumpTo(1000);
await tester.pumpAndSettle();
innerParagraph23 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Iteminner 23'), matching: find.byType(RichText)));
innerParagraph24 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Iteminner 24'), matching: find.byType(RichText)));
expect(innerParagraph23.selections[0], const TextSelection(baseOffset: 2, extentOffset: 12));
expect(innerParagraph24.selections[0], const TextSelection(baseOffset: 0, extentOffset: 2));
});
testWidgets('can copy off screen selection - Apple', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
final FocusNode focusNode = FocusNode();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: focusNode,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
focusNode.requestFocus();
await tester.pumpAndSettle();
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2) + const Offset(0, 5), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph1, 2) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
expect(paragraph0.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 0, extentOffset: 2));
// Scroll the selected text out off the screen.
controller.jumpTo(1000);
await tester.pumpAndSettle();
expect(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)), findsNothing);
expect(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)), findsNothing);
// Start copying.
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.keyC, meta: true));
final Map<String, dynamic> clipboardData = mockClipboard.clipboardData as Map<String, dynamic>;
expect(clipboardData['text'], 'em 0It');
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.iOS, TargetPlatform.macOS }));
testWidgets('can copy off screen selection - non-Apple', (WidgetTester tester) async {
final ScrollController controller = ScrollController();
final FocusNode focusNode = FocusNode();
await tester.pumpWidget(MaterialApp(
home: SelectionArea(
focusNode: focusNode,
selectionControls: materialTextSelectionControls,
child: ListView.builder(
controller: controller,
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Text('Item $index');
},
),
),
));
focusNode.requestFocus();
await tester.pumpAndSettle();
final RenderParagraph paragraph0 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)));
final TestGesture gesture = await tester.startGesture(textOffsetToPosition(paragraph0, 2) + const Offset(0, 5), kind: ui.PointerDeviceKind.mouse);
addTearDown(gesture.removePointer);
final RenderParagraph paragraph1 = tester.renderObject<RenderParagraph>(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)));
await gesture.moveTo(textOffsetToPosition(paragraph1, 2) + const Offset(0, 5));
await tester.pumpAndSettle();
await gesture.up();
expect(paragraph0.selections[0], const TextSelection(baseOffset: 2, extentOffset: 6));
expect(paragraph1.selections[0], const TextSelection(baseOffset: 0, extentOffset: 2));
// Scroll the selected text out off the screen.
controller.jumpTo(1000);
await tester.pumpAndSettle();
expect(find.descendant(of: find.text('Item 0'), matching: find.byType(RichText)), findsNothing);
expect(find.descendant(of: find.text('Item 1'), matching: find.byType(RichText)), findsNothing);
// Start copying.
await sendKeyCombination(tester, const SingleActivator(LogicalKeyboardKey.keyC, control: true));
final Map<String, dynamic> clipboardData = mockClipboard.clipboardData as Map<String, dynamic>;
expect(clipboardData['text'], 'em 0It');
}, variant: const TargetPlatformVariant(<TargetPlatform>{ TargetPlatform.android, TargetPlatform.windows, TargetPlatform.linux, TargetPlatform.fuchsia }));
});
}