hasSize assertion fail in SelectableRegion within a background page #119776
Description
Steps to Reproduce
- Create a new Flutter project.
- Replace
main.dartwith the following. - Run in Chrome.
Expected results: "foreground" text is visible, no exceptions
Actual results: "foreground" text is visible, two exceptions in console:
======== Exception caught by foundation library ====================================================
The following assertion was thrown while dispatching notifications for _SelectableRegionContainerDelegate:
Assertion failed: file:///home/alexey/snap/flutter/common/flutter/packages/flutter/lib/src/rendering/box.dart:2009:12
hasSize
"RenderBox was not laid out: RenderPhysicalModel#4cdfc NEEDS-LAYOUT NEEDS-PAINT"
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49 throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed
packages/flutter/src/rendering/box.dart 2009:12 get size
packages/flutter/src/widgets/selection_container.dart 311:15 get containerSize
packages/flutter/src/widgets/selectable_region.dart 1775:39 [_updateHandleLayersAndOwners]
packages/flutter/src/widgets/selectable_region.dart 1761:5 pushHandleLayers
packages/flutter/src/widgets/selection_container.dart 175:12 pushHandleLayers
packages/flutter/src/widgets/selectable_region.dart 1124:5 add
packages/flutter/src/rendering/selection.dart 195:7 [_updateSelectionRegistrarSubscription]
packages/flutter/src/foundation/change_notifier.dart 381:24 notifyListeners
packages/flutter/src/widgets/selectable_region.dart 1585:7 [_updateSelectionGeometry]
packages/flutter/src/widgets/selectable_region.dart 1570:5 didChangeSelectables
packages/flutter/src/widgets/selectable_region.dart 1414:11 didChangeSelectables
packages/flutter/src/widgets/selectable_region.dart 1502:5 [_updateSelectables]
packages/flutter/src/widgets/selectable_region.dart 1492:9 <fn>
packages/flutter/src/scheduler/binding.dart 1289:15 [_invokeFrameCallback]
packages/flutter/src/scheduler/binding.dart 1227:9 handleDrawFrame
packages/flutter/src/scheduler/binding.dart 942:7 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/isolate_helper.dart 48:19 internalCallback
The _SelectableRegionContainerDelegate sending notification was: Instance of '_SelectableRegionContainerDelegate'
====================================================================================================
======== Exception caught by scheduler library =====================================================
The following assertion was thrown during a scheduler callback:
Assertion failed: file:///home/alexey/snap/flutter/common/flutter/packages/flutter/lib/src/rendering/box.dart:2009:12
hasSize
"RenderBox was not laid out: RenderPhysicalModel#4cdfc NEEDS-LAYOUT NEEDS-PAINT"
When the exception was thrown, this was the stack:
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49 throw_
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed
packages/flutter/src/rendering/box.dart 2009:12 get size
packages/flutter/src/widgets/selection_container.dart 311:15 get containerSize
packages/flutter/src/widgets/selectable_region.dart 1775:39 [_updateHandleLayersAndOwners]
packages/flutter/src/widgets/selectable_region.dart 1587:5 [_updateSelectionGeometry]
packages/flutter/src/widgets/selectable_region.dart 1570:5 didChangeSelectables
packages/flutter/src/widgets/selectable_region.dart 1414:11 didChangeSelectables
packages/flutter/src/widgets/selectable_region.dart 1502:5 [_updateSelectables]
packages/flutter/src/widgets/selectable_region.dart 1492:9 <fn>
packages/flutter/src/scheduler/binding.dart 1289:15 [_invokeFrameCallback]
packages/flutter/src/scheduler/binding.dart 1227:9 handleDrawFrame
packages/flutter/src/scheduler/binding.dart 942:7 <fn>
dart-sdk/lib/_internal/js_dev_runtime/private/isolate_helper.dart 48:19 internalCallback
====================================================================================================
The exception is only thrown if the page with SelectableRegion is in the background. If the foreground page is deleted, everything works fine.
main.dart
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: BackgroundSelectableRegionPage(),
);
}
}
final _focusNode = FocusNode();
class BackgroundSelectableRegionPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Navigator(
pages: [
MaterialPage(
child: SelectableRegion(
focusNode: _focusNode,
selectionControls: materialTextSelectionControls,
child: Scaffold(body: Text('background')),
),
),
MaterialPage(
child: Scaffold(body: Text('foreground')),
),
],
onPopPage: (_, __) => false,
);
}
}flutter doctor -v
[✓] Flutter (Channel stable, 3.7.1, on Ubuntu 20.04.5 LTS 5.14.0-1056-oem, locale en_US.UTF-8)
• Flutter version 3.7.1 on channel stable at /home/alexey/snap/flutter/common/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 7048ed95a5 (9 hours ago), 2023-02-01 09:07:31 -0800
• Engine revision 800594f1f4
• Dart version 2.19.1
• DevTools version 2.20.1
[!] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /home/alexey/Android/Sdk
✗ cmdline-tools component is missing
Run `path/to/sdkmanager --install "cmdline-tools;latest"`
See https://developer.android.com/studio/command-line for more details.
✗ Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/linux#android-setup for more details.
[✓] Chrome - develop for the web
• Chrome at google-chrome
[✓] Linux toolchain - develop for Linux desktop
• clang version 10.0.0-4ubuntu1
• cmake version 3.16.3
• ninja version 1.10.0
• pkg-config version 0.29.1
[✓] Android Studio (version 2021.2)
• Android Studio at /home/alexey/bin/android-studio
• Flutter plugin version 71.0.2
• Dart plugin version 212.5744
• Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
[✓] VS Code (version 1.74.3)
• VS Code at /usr/share/code
• Flutter extension can be installed from:
🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[✓] Connected device (2 available)
• Linux (desktop) • linux • linux-x64 • Ubuntu 20.04.5 LTS 5.14.0-1056-oem
• Chrome (web) • chrome • web-javascript • Google Chrome 109.0.5414.119
[✓] HTTP Host Availability
• All required HTTP hosts are available
! Doctor found issues in 1 category.
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Stack traces logged to the consoleNavigator, Router, and related APIs.SelectableRegion, SelectionArea, SelectionContainer, Selectable, and related APIsFound to occur in 3.7Found to occur in 3.8flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onIssue is closed as already fixed in a newer version