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flutter_flutter/packages/flutter/test_fixes/material/material.dart
yim 972c181212
Allow the Slider to always show the value indicator. (#162223) 
Fixes: #34704

Modified enum `ShowValueIndicator`
before:
```dart
enum ShowValueIndicator {
  onlyForDiscrete,
  onlyForContinuous,
  always,
  never,
}
```
after:
```dart
enum ShowValueIndicator {
  onlyForDiscrete,
  onlyForContinuous,
  @Deprecated(
    'Use ShowValueIndicator.onDrag. '
    'This feature was deprecated after v3.28.0-1.0.pre.',
  )
  always,
  onDrag,
  alwaysVisible,
  never,
}
```
To maintain previous behavior, `ShowValueIndicator.onlyForDiscrete` and
`ShowValueIndicator.onlyForContinuous` are still retained.

The behavior of `ShowValueIndicator.always` remains consistent with the
previous implementation, but it is marked as deprecated and should be
replaced with `ShowValueIndicator.onDrag`. A new
`ShowValueIndicator.alwaysVisible` has been added to show the value
indicator even when not dragging.

Additionally, the value indicator is now rendered by `OverlayPortal`.


*If you had to change anything in the [flutter/tests] repo, include a
link to the migration guide as per the [breaking change policy].*

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
2025-06-11 23:25:14 +00:00

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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 'package:flutter/material.dart';
void main() {
// Generic reference variables.
BuildContext context;
RenderObjectWidget renderObjectWidget;
RenderObject renderObject;
Object object;
// Changes made in https://github.com/flutter/flutter/pull/26259
Scaffold scaffold = Scaffold(resizeToAvoidBottomPadding: true);
scaffold = Scaffold(error: '');
final bool resize = scaffold.resizeToAvoidBottomPadding;
// Change made in https://github.com/flutter/flutter/pull/15303
showDialog(child: Text('Fix me.'));
showDialog(error: '');
// Changes made in https://github.com/flutter/flutter/pull/44189
const Element element = Element(myWidget);
element.inheritFromElement(ancestor);
element.inheritFromWidgetOfExactType(targetType);
element.ancestorInheritedElementForWidgetOfExactType(targetType);
element.ancestorWidgetOfExactType(targetType);
element.ancestorStateOfType(TypeMatcher<targetType>());
element.rootAncestorStateOfType(TypeMatcher<targetType>());
element.ancestorRenderObjectOfType(TypeMatcher<targetType>());
// Changes made in https://github.com/flutter/flutter/pull/45941 and https://github.com/flutter/flutter/pull/83843
final WidgetsBinding binding = WidgetsBinding.instance!;
binding.deferFirstFrameReport();
binding.allowFirstFrameReport();
// Changes made in https://github.com/flutter/flutter/pull/44189
const StatefulElement statefulElement = StatefulElement(myWidget);
statefulElement.inheritFromElement(ancestor);
// Changes made in https://github.com/flutter/flutter/pull/44189
const BuildContext buildContext = Element(myWidget);
buildContext.inheritFromElement(ancestor);
buildContext.inheritFromWidgetOfExactType(targetType);
buildContext.ancestorInheritedElementForWidgetOfExactType(targetType);
buildContext.ancestorWidgetOfExactType(targetType);
buildContext.ancestorStateOfType(TypeMatcher<targetType>());
buildContext.rootAncestorStateOfType(TypeMatcher<targetType>());
buildContext.ancestorRenderObjectOfType(TypeMatcher<targetType>());
// Changes made in https://github.com/flutter/flutter/pull/66305
const Stack stack = Stack(overflow: Overflow.visible);
const Stack stack = Stack(overflow: Overflow.clip);
const Stack stack = Stack(error: '');
final behavior = stack.overflow;
// Changes made in https://github.com/flutter/flutter/pull/61648
const Form form = Form(autovalidate: true);
const Form form = Form(autovalidate: false);
const Form form = Form(error: '');
final autoMode = form.autovalidate;
// Changes made in https://github.com/flutter/flutter/pull/61648
const FormField formField = FormField(autovalidate: true);
const FormField formField = FormField(autovalidate: false);
const FormField formField = FormField(error: '');
final autoMode = formField.autovalidate;
// Changes made in https://github.com/flutter/flutter/pull/61648
const TextFormField textFormField = TextFormField(autovalidate: true);
const TextFormField textFormField = TextFormField(autovalidate: false);
const TextFormField textFormField = TextFormField(error: '');
// Changes made in https://github.com/flutter/flutter/pull/61648
const DropdownButtonFormField dropDownButtonFormField =
DropdownButtonFormField(autovalidate: true);
const DropdownButtonFormField dropdownButtonFormField =
DropdownButtonFormField(autovalidate: false);
const DropdownButtonFormField dropdownButtonFormField =
DropdownButtonFormField(error: '');
// Changes made in https://github.com/flutter/flutter/pull/68736
MediaQuery.of(context, nullOk: true);
MediaQuery.of(context, nullOk: false);
MediaQuery.of(error: '');
// Changes made in https://github.com/flutter/flutter/pull/70726
Navigator.of(context, nullOk: true);
Navigator.of(context, nullOk: false);
Navigator.of(error: '');
// Changes made in https://github.com/flutter/flutter/pull/68908
ScaffoldMessenger.of(context, nullOk: true);
ScaffoldMessenger.of(context, nullOk: false);
ScaffoldMessenger.of(error: '');
Scaffold.of(error: '');
Scaffold.of(context, nullOk: true);
Scaffold.of(context, nullOk: false);
// Changes made in https://github.com/flutter/flutter/pull/68910
Router.of(context, nullOk: true);
Router.of(context, nullOk: false);
Router.of(error: '');
// Changes made in https://github.com/flutter/flutter/pull/68911
Localizations.localeOf(context, nullOk: true);
Localizations.localeOf(context, nullOk: false);
Localizations.localeOf(error: '');
// Changes made in https://github.com/flutter/flutter/pull/68917
FocusTraversalOrder.of(context, nullOk: true);
FocusTraversalOrder.of(context, nullOk: false);
FocusTraversalOrder.of(error: '');
FocusTraversalGroup.of(error: '');
FocusTraversalGroup.of(context, nullOk: true);
FocusTraversalGroup.of(context, nullOk: false);
Focus.of(context, nullOk: true);
Focus.of(context, nullOk: false);
Focus.of(error: '');
// Changes made in https://github.com/flutter/flutter/pull/68921
Shortcuts.of(context, nullOk: true);
Shortcuts.of(context, nullOk: false);
Shortcuts.of(error: '');
Actions.find(error: '');
Actions.find(context, nullOk: true);
Actions.find(context, nullOk: false);
Actions.handler(context, nullOk: true);
Actions.handler(context, nullOk: false);
Actions.handler(error: '');
Actions.invoke(error: '');
Actions.invoke(context, nullOk: true);
Actions.invoke(context, nullOk: false);
// Changes made in https://github.com/flutter/flutter/pull/68925
AnimatedList.of(context, nullOk: true);
AnimatedList.of(context, nullOk: false);
AnimatedList.of(error: '');
SliverAnimatedList.of(error: '');
SliverAnimatedList.of(context, nullOk: true);
SliverAnimatedList.of(context, nullOk: false);
// Changes made in https://github.com/flutter/flutter/pull/68905
MaterialBasedCupertinoThemeData.resolveFrom(context, nullOk: true);
MaterialBasedCupertinoThemeData.resolveFrom(context, nullOk: false);
MaterialBasedCupertinoThemeData.resolveFrom(error: '');
// Changes made in https://github.com/flutter/flutter/pull/72043
TextField(maxLengthEnforced: true);
TextField(maxLengthEnforced: false);
TextField(error: '');
final TextField textField;
textField.maxLengthEnforced;
TextFormField(maxLengthEnforced: true);
TextFormField(maxLengthEnforced: false);
TextFormField(error: '');
// Changes made in https://github.com/flutter/flutter/pull/59127
const BottomNavigationBarItem bottomNavigationBarItem =
BottomNavigationBarItem(title: myTitle);
const BottomNavigationBarItem bottomNavigationBarItem =
BottomNavigationBarItem();
const BottomNavigationBarItem bottomNavigationBarItem =
BottomNavigationBarItem(error: '');
bottomNavigationBarItem.title;
// Changes made in https://github.com/flutter/flutter/pull/65246
RectangularSliderTrackShape(disabledThumbGapWidth: 2.0);
RectangularSliderTrackShape(error: '');
// Changes made in https://github.com/flutter/flutter/pull/79160
Draggable draggable = Draggable();
draggable = Draggable(dragAnchor: DragAnchor.child);
draggable = Draggable(dragAnchor: DragAnchor.pointer);
draggable = Draggable(error: '');
draggable.dragAnchor;
// Changes made in https://github.com/flutter/flutter/pull/79160
LongPressDraggable longPressDraggable = LongPressDraggable();
longPressDraggable = LongPressDraggable(dragAnchor: DragAnchor.child);
longPressDraggable = LongPressDraggable(dragAnchor: DragAnchor.pointer);
longPressDraggable = LongPressDraggable(error: '');
longPressDraggable.dragAnchor;
// Changes made in https://github.com/flutter/flutter/pull/64254
final LeafRenderObjectElement leafElement = LeafRenderObjectElement();
leafElement.insertChildRenderObject(renderObject, object);
leafElement.moveChildRenderObject(renderObject, object);
leafElement.removeChildRenderObject(renderObject);
final ListWheelElement listWheelElement = ListWheelElement();
listWheelElement.insertChildRenderObject(renderObject, object);
listWheelElement.moveChildRenderObject(renderObject, object);
listWheelElement.removeChildRenderObject(renderObject);
final MultiChildRenderObjectElement multiChildRenderObjectElement =
MultiChildRenderObjectElement();
multiChildRenderObjectElement.insertChildRenderObject(renderObject, object);
multiChildRenderObjectElement.moveChildRenderObject(renderObject, object);
multiChildRenderObjectElement.removeChildRenderObject(renderObject);
final SingleChildRenderObjectElement singleChildRenderObjectElement =
SingleChildRenderObjectElement();
singleChildRenderObjectElement.insertChildRenderObject(renderObject, object);
singleChildRenderObjectElement.moveChildRenderObject(renderObject, object);
singleChildRenderObjectElement.removeChildRenderObject(renderObject);
final SliverMultiBoxAdaptorElement sliverMultiBoxAdaptorElement =
SliverMultiBoxAdaptorElement();
sliverMultiBoxAdaptorElement.insertChildRenderObject(renderObject, object);
sliverMultiBoxAdaptorElement.moveChildRenderObject(renderObject, object);
sliverMultiBoxAdaptorElement.removeChildRenderObject(renderObject);
final RenderObjectToWidgetElement renderObjectToWidgetElement =
RenderObjectToWidgetElement(widget);
renderObjectToWidgetElement.insertChildRenderObject(renderObject, object);
renderObjectToWidgetElement.moveChildRenderObject(renderObject, object);
renderObjectToWidgetElement.removeChildRenderObject(renderObject);
// Changes made in https://docs.flutter.dev/release/breaking-changes/clip-behavior
ListWheelScrollView listWheelScrollView = ListWheelScrollView();
listWheelScrollView = ListWheelScrollView(clipToSize: true);
listWheelScrollView = ListWheelScrollView(clipToSize: false);
listWheelScrollView = ListWheelScrollView(error: '');
listWheelScrollView = ListWheelScrollView.useDelegate(error: '');
listWheelScrollView = ListWheelScrollView.useDelegate();
listWheelScrollView = ListWheelScrollView.useDelegate(clipToSize: true);
listWheelScrollView = ListWheelScrollView.useDelegate(clipToSize: false);
listWheelScrollView.clipToSize;
ListWheelViewport listWheelViewport = ListWheelViewport();
listWheelViewport = ListWheelViewport(clipToSize: true);
listWheelViewport = ListWheelViewport(clipToSize: false);
listWheelViewport = ListWheelViewport(error: '');
listWheelViewport.clipToSize;
// Changes made in https://github.com/flutter/flutter/pull/87839
final OverscrollIndicatorNotification notification =
OverscrollIndicatorNotification(leading: true);
final OverscrollIndicatorNotification notification =
OverscrollIndicatorNotification(error: '');
notification.disallowGlow();
// Changes made in https://github.com/flutter/flutter/pull/96115
Icon icon = Icons.pie_chart_outlined;
// Changes made in https://github.com/flutter/flutter/pull/96957
Scrollbar scrollbar = Scrollbar(isAlwaysShown: true);
bool nowShowing = scrollbar.isAlwaysShown;
ScrollbarThemeData scrollbarTheme = ScrollbarThemeData(
isAlwaysShown: nowShowing,
);
scrollbarTheme.copyWith(isAlwaysShown: nowShowing);
scrollbarTheme.isAlwaysShown;
RawScrollbar rawScrollbar = RawScrollbar(isAlwaysShown: true);
nowShowing = rawScrollbar.isAlwaysShown;
// Changes made in https://github.com/flutter/flutter/pull/96174
Chip chip = Chip();
chip = Chip(useDeleteButtonTooltip: false);
chip = Chip(useDeleteButtonTooltip: true);
chip = Chip(
useDeleteButtonTooltip: false,
deleteButtonTooltipMessage: 'Delete Tooltip',
);
chip.useDeleteButtonTooltip;
// Changes made in https://github.com/flutter/flutter/pull/96174
InputChip inputChip = InputChip();
inputChip = InputChip(useDeleteButtonTooltip: false);
inputChip = InputChip(useDeleteButtonTooltip: true);
inputChip = InputChip(
useDeleteButtonTooltip: false,
deleteButtonTooltipMessage: 'Delete Tooltip',
);
inputChip.useDeleteButtonTooltip;
// Changes made in https://github.com/flutter/flutter/pull/96174
RawChip rawChip = Rawchip();
rawChip = RawChip(useDeleteButtonTooltip: false);
rawChip = RawChip(useDeleteButtonTooltip: true);
rawChip = RawChip(
useDeleteButtonTooltip: false,
deleteButtonTooltipMessage: 'Delete Tooltip',
);
rawChip.useDeleteButtonTooltip;
// Change made in https://github.com/flutter/flutter/pull/100381
TextSelectionOverlay.fadeDuration;
// Changes made in https://github.com/flutter/flutter/pull/105291
ButtonStyle elevationButtonStyle = ElevatedButton.styleFrom(
primary: Colors.blue,
onPrimary: Colors.white,
onSurface: Colors.grey,
);
ButtonStyle outlinedButtonStyle = OutlinedButton.styleFrom(
primary: Colors.blue,
onSurface: Colors.grey,
);
ButtonStyle textButtonStyle = TextButton.styleFrom(
primary: Colors.blue,
onSurface: Colors.grey,
);
// Changes made in https://github.com/flutter/flutter/pull/78588
final ScrollBehavior scrollBehavior = ScrollBehavior();
scrollBehavior.buildViewportChrome(context, child, axisDirection);
final MaterialScrollBehavior materialScrollBehavior =
MaterialScrollBehavior();
materialScrollBehavior.buildViewportChrome(context, child, axisDirection);
// Changes made in https://github.com/flutter/flutter/pull/111706
Scrollbar scrollbar = Scrollbar(showTrackOnHover: true);
bool nowShowing = scrollbar.showTrackOnHover;
// The 3 expressions below have `bulkApply` set to true thus can't be tested yet.
//ScrollbarThemeData scrollbarTheme = ScrollbarThemeData(showTrackOnHover: nowShowing);
//scrollbarTheme.copyWith(showTrackOnHover: nowShowing);
//scrollbarTheme.showTrackOnHover;
// Changes made in https://github.com/flutter/flutter/pull/114459
MediaQuery.boldTextOverride(context);
// Changes made in https://github.com/flutter/flutter/pull/122555
final ScrollableDetails details = ScrollableDetails(
direction: AxisDirection.down,
clipBehavior: Clip.none,
);
final Clip clip = details.clipBehavior;
// Changes made in https://github.com/flutter/flutter/pull/134417
const Curve curve = standardEasing;
const Curve curve = accelerateEasing;
const Curve curve = decelerateEasing;
final PlatformMenuBar platformMenuBar = PlatformMenuBar(
menus: <PlatformMenuItem>[],
body: const SizedBox(),
);
final Widget bodyValue = platformMenuBar.body;
// Changes made in https://github.com/flutter/flutter/pull/154972
final InputBorder outlineBorder = MaterialStateOutlineInputBorder.resolveWith(
(states) => const OutlineInputBorder(),
);
final InputBorder underlineBorder =
MaterialStateUnderlineInputBorder.resolveWith(
(states) => const UnderlineInputBorder(),
);
// Changes made in https://github.com/flutter/flutter/pull/162223
const SliderThemeData(showValueIndicator: ShowValueIndicator.always);
// Changes made in https://github.com/flutter/flutter/pull/166382
Switch(activeColor: Colors.red, value: false, onChanged: null);
SwitchListTile(activeColor: Colors.red, value: false, onChanged: null);
}
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