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Remove unnecessary null checks in flutter/cupertino (#119020)

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Michael Goderbauer 2023-01-23 17:36:50 -08:00 committed by GitHub
parent 720bea0265
commit 0de8bef744
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31 changed files with 80 additions and 319 deletions
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8
packages/flutter/lib/src/cupertino/activity_indicator.dart
View File

@ -36,9 +36,7 @@ class CupertinoActivityIndicator extends StatefulWidget {
this.color,
this.animating = true,
this.radius = _kDefaultIndicatorRadius,
}) : assert(animating != null),
assert(radius != null),
assert(radius > 0.0),
}) : assert(radius > 0.0),
progress = 1.0;
/// Creates a non-animated iOS-style activity indicator that displays
@ -52,9 +50,7 @@ class CupertinoActivityIndicator extends StatefulWidget {
this.color,
this.radius = _kDefaultIndicatorRadius,
this.progress = 1.0,
}) : assert(radius != null),
assert(radius > 0.0),
assert(progress != null),
}) : assert(radius > 0.0),
assert(progress >= 0.0),
assert(progress <= 1.0),
animating = false;

16
packages/flutter/lib/src/cupertino/app.dart
View File

@ -177,15 +177,7 @@ class CupertinoApp extends StatefulWidget {
this.restorationScopeId,
this.scrollBehavior,
this.useInheritedMediaQuery = false,
}) : assert(routes != null),
assert(navigatorObservers != null),
assert(title != null),
assert(showPerformanceOverlay != null),
assert(checkerboardRasterCacheImages != null),
assert(checkerboardOffscreenLayers != null),
assert(showSemanticsDebugger != null),
assert(debugShowCheckedModeBanner != null),
routeInformationProvider = null,
}) : routeInformationProvider = null,
routeInformationParser = null,
routerDelegate = null,
backButtonDispatcher = null,
@ -222,12 +214,6 @@ class CupertinoApp extends StatefulWidget {
this.scrollBehavior,
this.useInheritedMediaQuery = false,
}) : assert(routerDelegate != null || routerConfig != null),
assert(title != null),
assert(showPerformanceOverlay != null),
assert(checkerboardRasterCacheImages != null),
assert(checkerboardOffscreenLayers != null),
assert(showSemanticsDebugger != null),
assert(debugShowCheckedModeBanner != null),
navigatorObservers = null,
navigatorKey = null,
onGenerateRoute = null,

8
packages/flutter/lib/src/cupertino/bottom_tab_bar.dart
View File

@ -74,16 +74,12 @@ class CupertinoTabBar extends StatelessWidget implements PreferredSizeWidget {
width: 0.0, // 0.0 means one physical pixel
),
),
}) : assert(items != null),
assert(
}) : assert(
items.length >= 2,
"Tabs need at least 2 items to conform to Apple's HIG",
),
assert(currentIndex != null),
assert(0 <= currentIndex && currentIndex < items.length),
assert(iconSize != null),
assert(height != null && height >= 0.0),
assert(inactiveColor != null);
assert(height >= 0.0);
/// The interactive items laid out within the bottom navigation bar.
///

4
packages/flutter/lib/src/cupertino/button.dart
View File

@ -50,8 +50,6 @@ class CupertinoButton extends StatefulWidget {
this.alignment = Alignment.center,
required this.onPressed,
}) : assert(pressedOpacity == null || (pressedOpacity >= 0.0 && pressedOpacity <= 1.0)),
assert(disabledColor != null),
assert(alignment != null),
_filled = false;
/// Creates an iOS-style button with a filled background.
@ -71,8 +69,6 @@ class CupertinoButton extends StatefulWidget {
this.alignment = Alignment.center,
required this.onPressed,
}) : assert(pressedOpacity == null || (pressedOpacity >= 0.0 && pressedOpacity <= 1.0)),
assert(disabledColor != null),
assert(alignment != null),
color = null,
_filled = true;

13
packages/flutter/lib/src/cupertino/colors.dart
View File

@ -780,16 +780,7 @@ class CupertinoDynamicColor extends Color with Diagnosticable {
this.darkHighContrastElevatedColor,
this._debugResolveContext,
this._debugLabel,
) : assert(color != null),
assert(darkColor != null),
assert(highContrastColor != null),
assert(darkHighContrastColor != null),
assert(elevatedColor != null),
assert(darkElevatedColor != null),
assert(highContrastElevatedColor != null),
assert(darkHighContrastElevatedColor != null),
assert(_effectiveColor != null),
// The super constructor has to be called with a dummy value in order to mark
) : // The super constructor has to be called with a dummy value in order to mark
// this constructor const.
// The field `value` is overridden in the class implementation.
super(0);
@ -908,7 +899,6 @@ class CupertinoDynamicColor extends Color with Diagnosticable {
/// * [maybeResolve], which is similar to this function, but will allow a
/// null `resolvable` color.
static Color resolve(Color resolvable, BuildContext context) {
assert(context != null);
return (resolvable is CupertinoDynamicColor)
? resolvable.resolveFrom(context)
: resolvable;
@ -931,7 +921,6 @@ class CupertinoDynamicColor extends Color with Diagnosticable {
if (resolvable == null) {
return null;
}
assert(context != null);
return (resolvable is CupertinoDynamicColor)
? resolvable.resolveFrom(context)
: resolvable;

15
packages/flutter/lib/src/cupertino/context_menu.dart
View File

@ -142,8 +142,7 @@ class CupertinoContextMenu extends StatefulWidget {
'This feature was deprecated after v3.4.0-34.1.pre.',
)
this.previewBuilder = _defaultPreviewBuilder,
}) : assert(actions != null && actions.isNotEmpty),
assert(child != null),
}) : assert(actions.isNotEmpty),
builder = ((BuildContext context, Animation<double> animation) => child);
/// Creates a context menu with a custom [builder] controlling the widget.
@ -158,7 +157,7 @@ class CupertinoContextMenu extends StatefulWidget {
super.key,
required this.actions,
required this.builder,
}) : assert(actions != null && actions.isNotEmpty),
}) : assert(actions.isNotEmpty),
child = null,
previewBuilder = null;
@ -794,8 +793,7 @@ class _ContextMenuRoute<T> extends PopupRoute<T> {
super.filter,
required Rect previousChildRect,
super.settings,
}) : assert(actions != null && actions.isNotEmpty),
assert(contextMenuLocation != null),
}) : assert(actions.isNotEmpty),
_actions = actions,
_builder = builder,
_contextMenuLocation = contextMenuLocation,
@ -1081,8 +1079,7 @@ class _ContextMenuRouteStatic extends StatefulWidget {
this.onDismiss,
required this.orientation,
this.sheetGlobalKey,
}) : assert(contextMenuLocation != null),
assert(orientation != null);
});
final List<Widget>? actions;
final Widget child;
@ -1409,9 +1406,7 @@ class _ContextMenuSheet extends StatelessWidget {
required this.actions,
required _ContextMenuLocation contextMenuLocation,
required Orientation orientation,
}) : assert(actions != null && actions.isNotEmpty),
assert(contextMenuLocation != null),
assert(orientation != null),
}) : assert(actions.isNotEmpty),
_contextMenuLocation = contextMenuLocation,
_orientation = orientation;

4
packages/flutter/lib/src/cupertino/context_menu_action.dart
View File

@ -20,9 +20,7 @@ class CupertinoContextMenuAction extends StatefulWidget {
this.isDestructiveAction = false,
this.onPressed,
this.trailingIcon,
}) : assert(child != null),
assert(isDefaultAction != null),
assert(isDestructiveAction != null);
});
/// The widget that will be placed inside the action.
final Widget child;

16
packages/flutter/lib/src/cupertino/date_picker.dart
View File

@ -81,8 +81,7 @@ class _DatePickerLayoutDelegate extends MultiChildLayoutDelegate {
_DatePickerLayoutDelegate({
required this.columnWidths,
required this.textDirectionFactor,
}) : assert(columnWidths != null),
assert(textDirectionFactor != null);
});
// The list containing widths of all columns.
final List<double> columnWidths;
@ -277,14 +276,10 @@ class CupertinoDatePicker extends StatefulWidget {
this.dateOrder,
this.backgroundColor,
}) : initialDateTime = initialDateTime ?? DateTime.now(),
assert(mode != null),
assert(onDateTimeChanged != null),
assert(minimumYear != null),
assert(
minuteInterval > 0 && 60 % minuteInterval == 0,
'minute interval is not a positive integer factor of 60',
) {
assert(this.initialDateTime != null);
assert(
mode != CupertinoDatePickerMode.dateAndTime || minimumDate == null || !this.initialDateTime.isBefore(minimumDate!),
'initial date is before minimum date',
@ -944,7 +939,6 @@ class _CupertinoDatePickerDateTimeState extends State<CupertinoDatePicker> {
}
void _scrollToDate(DateTime newDate, DateTime fromDate, bool minCheck) {
assert(newDate != null);
SchedulerBinding.instance.addPostFrameCallback((Duration timestamp) {
if (fromDate.year != newDate.year || fromDate.month != newDate.month || fromDate.day != newDate.day) {
_animateColumnControllerToItem(dateController, selectedDayFromInitial);
@ -1349,7 +1343,6 @@ class _CupertinoDatePickerDateState extends State<CupertinoDatePicker> {
}
void _scrollToDate(DateTime newDate) {
assert(newDate != null);
SchedulerBinding.instance.addPostFrameCallback((Duration timestamp) {
if (selectedYear != newDate.year) {
_animateColumnControllerToItem(yearController, newDate.year);
@ -1551,15 +1544,12 @@ class CupertinoTimerPicker extends StatefulWidget {
this.alignment = Alignment.center,
this.backgroundColor,
required this.onTimerDurationChanged,
}) : assert(mode != null),
assert(onTimerDurationChanged != null),
assert(initialTimerDuration >= Duration.zero),
}) : assert(initialTimerDuration >= Duration.zero),
assert(initialTimerDuration < const Duration(days: 1)),
assert(minuteInterval > 0 && 60 % minuteInterval == 0),
assert(secondInterval > 0 && 60 % secondInterval == 0),
assert(initialTimerDuration.inMinutes % minuteInterval == 0),
assert(initialTimerDuration.inSeconds % secondInterval == 0),
assert(alignment != null);
assert(initialTimerDuration.inSeconds % secondInterval == 0);
/// The mode of the timer picker.
final CupertinoTimerPickerMode mode;

6
packages/flutter/lib/src/cupertino/desktop_text_selection_toolbar_button.dart
View File

@ -37,8 +37,7 @@ class CupertinoDesktopTextSelectionToolbarButton extends StatefulWidget {
super.key,
required this.onPressed,
required Widget this.child,
}) : assert(child != null),
buttonItem = null;
}) : buttonItem = null;
/// Create an instance of [CupertinoDesktopTextSelectionToolbarButton] whose child is
/// a [Text] widget styled like the default Mac context menu button.
@ -66,8 +65,7 @@ class CupertinoDesktopTextSelectionToolbarButton extends StatefulWidget {
CupertinoDesktopTextSelectionToolbarButton.buttonItem({
super.key,
required ContextMenuButtonItem this.buttonItem,
}) : assert(buttonItem != null),
onPressed = buttonItem.onPressed,
}) : onPressed = buttonItem.onPressed,
child = null;
/// {@macro flutter.cupertino.CupertinoTextSelectionToolbarButton.onPressed}

14
packages/flutter/lib/src/cupertino/dialog.dart
View File

@ -201,7 +201,7 @@ class CupertinoAlertDialog extends StatelessWidget {
this.actionScrollController,
this.insetAnimationDuration = const Duration(milliseconds: 100),
this.insetAnimationCurve = Curves.decelerate,
}) : assert(actions != null);
});
/// The (optional) title of the dialog is displayed in a large font at the top
/// of the dialog.
@ -665,8 +665,7 @@ class CupertinoActionSheetAction extends StatelessWidget {
this.isDefaultAction = false,
this.isDestructiveAction = false,
required this.child,
}) : assert(child != null),
assert(onPressed != null);
});
/// The callback that is called when the button is tapped.
///
@ -701,7 +700,7 @@ class CupertinoActionSheetAction extends StatelessWidget {
}
return MouseRegion(
cursor: onPressed != null && kIsWeb ? SystemMouseCursors.click : MouseCursor.defer,
cursor: kIsWeb ? SystemMouseCursors.click : MouseCursor.defer,
child: GestureDetector(
onTap: onPressed,
behavior: HitTestBehavior.opaque,
@ -896,7 +895,6 @@ class _CupertinoDialogRenderElement extends RenderObjectElement {
}
void _placeChildInSlot(RenderObject child, _AlertDialogSections slot) {
assert(slot != null);
switch (slot) {
case _AlertDialogSections.contentSection:
renderObject.contentSection = child as RenderBox;
@ -1443,7 +1441,7 @@ class _CupertinoAlertActionSection extends StatelessWidget {
this.scrollController,
this.hasCancelButton = false,
this.isActionSheet = false,
}) : assert(children != null);
});
final List<Widget> children;
@ -1593,9 +1591,7 @@ class CupertinoDialogAction extends StatelessWidget {
this.isDestructiveAction = false,
this.textStyle,
required this.child,
}) : assert(child != null),
assert(isDefaultAction != null),
assert(isDestructiveAction != null);
});
/// The callback that is called when the button is tapped or otherwise
/// activated.

5
packages/flutter/lib/src/cupertino/interface_level.dart
View File

@ -45,8 +45,7 @@ class CupertinoUserInterfaceLevel extends InheritedWidget {
super.key,
required CupertinoUserInterfaceLevelData data,
required super.child,
}) : assert(data != null),
_data = data;
}) : _data = data;
final CupertinoUserInterfaceLevelData _data;
@ -65,7 +64,6 @@ class CupertinoUserInterfaceLevel extends InheritedWidget {
/// * [maybeOf], which is similar, but will return null if no
/// [CupertinoUserInterfaceLevel] encloses the given context.
static CupertinoUserInterfaceLevelData of(BuildContext context) {
assert(context != null);
final CupertinoUserInterfaceLevel? query = context.dependOnInheritedWidgetOfExactType<CupertinoUserInterfaceLevel>();
if (query != null) {
return query._data;
@ -95,7 +93,6 @@ class CupertinoUserInterfaceLevel extends InheritedWidget {
/// * [of], which is similar, but will throw an exception if no
/// [CupertinoUserInterfaceLevel] encloses the given context.
static CupertinoUserInterfaceLevelData? maybeOf(BuildContext context) {
assert(context != null);
final CupertinoUserInterfaceLevel? query = context.dependOnInheritedWidgetOfExactType<CupertinoUserInterfaceLevel>();
if (query != null) {
return query._data;

35
packages/flutter/lib/src/cupertino/nav_bar.dart
View File

@ -257,15 +257,7 @@ class CupertinoNavigationBar extends StatefulWidget implements ObstructingPrefer
this.padding,
this.transitionBetweenRoutes = true,
this.heroTag = _defaultHeroTag,
}) : assert(automaticallyImplyLeading != null),
assert(automaticallyImplyMiddle != null),
assert(transitionBetweenRoutes != null),
assert(
heroTag != null,
'heroTag cannot be null. Use transitionBetweenRoutes = false to '
'disable Hero transition on this navigation bar.',
),
assert(
}) : assert(
!transitionBetweenRoutes || identical(heroTag, _defaultHeroTag),
'Cannot specify a heroTag override if this navigation bar does not '
'transition due to transitionBetweenRoutes = false.',
@ -599,9 +591,7 @@ class CupertinoSliverNavigationBar extends StatefulWidget {
this.transitionBetweenRoutes = true,
this.heroTag = _defaultHeroTag,
this.stretch = false,
}) : assert(automaticallyImplyLeading != null),
assert(automaticallyImplyTitle != null),
assert(
}) : assert(
automaticallyImplyTitle == true || largeTitle != null,
'No largeTitle has been provided but automaticallyImplyTitle is also '
'false. Either provide a largeTitle or set automaticallyImplyTitle to '
@ -781,9 +771,7 @@ class _LargeTitleNavigationBarSliverDelegate
required this.persistentHeight,
required this.alwaysShowMiddle,
required this.stretchConfiguration,
}) : assert(persistentHeight != null),
assert(alwaysShowMiddle != null),
assert(transitionBetweenRoutes != null);
});
final _NavigationBarStaticComponentsKeys keys;
final _NavigationBarStaticComponents components;
@ -1626,9 +1614,7 @@ class _TransitionableNavigationBar extends StatelessWidget {
required this.hasUserMiddle,
required this.largeExpanded,
required this.child,
}) : assert(componentsKeys != null),
assert(largeExpanded != null),
assert(!largeExpanded || largeTitleTextStyle != null),
}) : assert(!largeExpanded || largeTitleTextStyle != null),
super(key: componentsKeys.navBarBoxKey);
final _NavigationBarStaticComponentsKeys componentsKeys;
@ -2100,7 +2086,7 @@ class _NavigationBarComponentsTransition {
return null;
}
if (bottomLargeTitle != null && topBackLabel != null) {
if (topBackLabel != null) {
// Move from current position to the top page's back label position.
return slideFromLeadingEdge(
fromKey: bottomComponents.largeTitleKey,
@ -2127,7 +2113,7 @@ class _NavigationBarComponentsTransition {
);
}
if (bottomLargeTitle != null && topLeading != null) {
if (topLeading != null) {
// Unlike bottom middle, the bottom large title moves when it can't
// transition to the top back label position.
final RelativeRect from = positionInTransitionBox(bottomComponents.largeTitleKey, from: bottomNavBarBox);
@ -2258,7 +2244,6 @@ class _NavigationBarComponentsTransition {
// text is too long, the topBackLabel will say 'Back' instead of the original
// text.
if (bottomLargeTitle != null &&
topBackLabel != null &&
bottomLargeExpanded) {
return slideFromLeadingEdge(
fromKey: bottomComponents.largeTitleKey,
@ -2282,7 +2267,7 @@ class _NavigationBarComponentsTransition {
// The topBackLabel always comes from the large title first if available
// and expanded instead of middle.
if (bottomMiddle != null && topBackLabel != null) {
if (bottomMiddle != null) {
return slideFromLeadingEdge(
fromKey: bottomComponents.middleKey,
fromNavBarBox: bottomNavBarBox,
@ -2452,10 +2437,6 @@ Widget _navBarHeroFlightShuttleBuilder(
BuildContext fromHeroContext,
BuildContext toHeroContext,
) {
assert(animation != null);
assert(flightDirection != null);
assert(fromHeroContext != null);
assert(toHeroContext != null);
assert(fromHeroContext.widget is Hero);
assert(toHeroContext.widget is Hero);
@ -2468,8 +2449,6 @@ Widget _navBarHeroFlightShuttleBuilder(
final _TransitionableNavigationBar fromNavBar = fromHeroWidget.child as _TransitionableNavigationBar;
final _TransitionableNavigationBar toNavBar = toHeroWidget.child as _TransitionableNavigationBar;
assert(fromNavBar.componentsKeys != null);
assert(toNavBar.componentsKeys != null);
assert(
fromNavBar.componentsKeys.navBarBoxKey.currentContext!.owner != null,

3
packages/flutter/lib/src/cupertino/page_scaffold.dart
View File

@ -39,8 +39,7 @@ class CupertinoPageScaffold extends StatefulWidget {
this.backgroundColor,
this.resizeToAvoidBottomInset = true,
required this.child,
}) : assert(child != null),
assert(resizeToAvoidBottomInset != null);
});
/// The [navigationBar], typically a [CupertinoNavigationBar], is drawn at the
/// top of the screen.

17
packages/flutter/lib/src/cupertino/picker.dart
View File

@ -83,13 +83,9 @@ class CupertinoPicker extends StatefulWidget {
required List<Widget> children,
this.selectionOverlay = const CupertinoPickerDefaultSelectionOverlay(),
bool looping = false,
}) : assert(children != null),
assert(diameterRatio != null),
assert(diameterRatio > 0.0, RenderListWheelViewport.diameterRatioZeroMessage),
}) : assert(diameterRatio > 0.0, RenderListWheelViewport.diameterRatioZeroMessage),
assert(magnification > 0),
assert(itemExtent != null),
assert(itemExtent > 0),
assert(squeeze != null),
assert(squeeze > 0),
childDelegate = looping
? ListWheelChildLoopingListDelegate(children: children)
@ -126,13 +122,9 @@ class CupertinoPicker extends StatefulWidget {
required NullableIndexedWidgetBuilder itemBuilder,
int? childCount,
this.selectionOverlay = const CupertinoPickerDefaultSelectionOverlay(),
}) : assert(itemBuilder != null),
assert(diameterRatio != null),
assert(diameterRatio > 0.0, RenderListWheelViewport.diameterRatioZeroMessage),
}) : assert(diameterRatio > 0.0, RenderListWheelViewport.diameterRatioZeroMessage),
assert(magnification > 0),
assert(itemExtent != null),
assert(itemExtent > 0),
assert(squeeze != null),
assert(squeeze > 0),
childDelegate = ListWheelChildBuilderDelegate(builder: itemBuilder, childCount: childCount);
@ -254,7 +246,6 @@ class _CupertinoPickerState extends State<CupertinoPicker> {
hasSuitableHapticHardware = false;
break;
}
assert(hasSuitableHapticHardware != null);
if (hasSuitableHapticHardware && index != _lastHapticIndex) {
_lastHapticIndex = index;
HapticFeedback.selectionClick();
@ -355,9 +346,7 @@ class CupertinoPickerDefaultSelectionOverlay extends StatelessWidget {
this.background = CupertinoColors.tertiarySystemFill,
this.capStartEdge = true,
this.capEndEdge = true,
}) : assert(background != null),
assert(capStartEdge != null),
assert(capEndEdge != null);
});
/// Whether to use the default use rounded corners and margin on the start side.
final bool capStartEdge;

14
packages/flutter/lib/src/cupertino/refresh.dart
View File

@ -20,9 +20,7 @@ class _CupertinoSliverRefresh extends SingleChildRenderObjectWidget {
this.refreshIndicatorLayoutExtent = 0.0,
this.hasLayoutExtent = false,
super.child,
}) : assert(refreshIndicatorLayoutExtent != null),
assert(refreshIndicatorLayoutExtent >= 0.0),
assert(hasLayoutExtent != null);
}) : assert(refreshIndicatorLayoutExtent >= 0.0);
// The amount of space the indicator should occupy in the sliver in a
// resting state when in the refreshing mode.
@ -61,9 +59,7 @@ class _RenderCupertinoSliverRefresh extends RenderSliver
required double refreshIndicatorExtent,
required bool hasLayoutExtent,
RenderBox? child,
}) : assert(refreshIndicatorExtent != null),
assert(refreshIndicatorExtent >= 0.0),
assert(hasLayoutExtent != null),
}) : assert(refreshIndicatorExtent >= 0.0),
_refreshIndicatorExtent = refreshIndicatorExtent,
_hasLayoutExtent = hasLayoutExtent {
this.child = child;
@ -74,7 +70,6 @@ class _RenderCupertinoSliverRefresh extends RenderSliver
double get refreshIndicatorLayoutExtent => _refreshIndicatorExtent;
double _refreshIndicatorExtent;
set refreshIndicatorLayoutExtent(double value) {
assert(value != null);
assert(value >= 0.0);
if (value == _refreshIndicatorExtent) {
return;
@ -89,7 +84,6 @@ class _RenderCupertinoSliverRefresh extends RenderSliver
bool get hasLayoutExtent => _hasLayoutExtent;
bool _hasLayoutExtent;
set hasLayoutExtent(bool value) {
assert(value != null);
if (value == _hasLayoutExtent) {
return;
}
@ -303,9 +297,7 @@ class CupertinoSliverRefreshControl extends StatefulWidget {
this.refreshIndicatorExtent = _defaultRefreshIndicatorExtent,
this.builder = buildRefreshIndicator,
this.onRefresh,
}) : assert(refreshTriggerPullDistance != null),
assert(refreshTriggerPullDistance > 0.0),
assert(refreshIndicatorExtent != null),
}) : assert(refreshTriggerPullDistance > 0.0),
assert(refreshIndicatorExtent >= 0.0),
assert(
refreshTriggerPullDistance >= refreshIndicatorExtent,

43
packages/flutter/lib/src/cupertino/route.dart
View File

@ -225,21 +225,11 @@ mixin CupertinoRouteTransitionMixin<T> on PageRoute<T> {
@override
Widget buildPage(BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
final Widget child = buildContent(context);
final Widget result = Semantics(
return Semantics(
scopesRoute: true,
explicitChildNodes: true,
child: child,
);
assert(() {
if (child == null) {
throw FlutterError.fromParts(<DiagnosticsNode>[
ErrorSummary('The builder for route "${settings.name}" returned null.'),
ErrorDescription('Route builders must never return null.'),
]);
}
return true;
}());
return result;
}
// Called by _CupertinoBackGestureDetector when a pop ("back") drag start
@ -343,9 +333,7 @@ class CupertinoPageRoute<T> extends PageRoute<T> with CupertinoRouteTransitionMi
this.maintainState = true,
super.fullscreenDialog,
super.allowSnapshotting = true,
}) : assert(builder != null),
assert(maintainState != null),
assert(fullscreenDialog != null) {
}) {
assert(opaque);
}
@ -373,8 +361,7 @@ class _PageBasedCupertinoPageRoute<T> extends PageRoute<T> with CupertinoRouteTr
_PageBasedCupertinoPageRoute({
required CupertinoPage<T> page,
super.allowSnapshotting = true,
}) : assert(page != null),
super(settings: page) {
}) : super(settings: page) {
assert(opaque);
}
@ -424,9 +411,7 @@ class CupertinoPage<T> extends Page<T> {
super.name,
super.arguments,
super.restorationId,
}) : assert(child != null),
assert(maintainState != null),
assert(fullscreenDialog != null);
});
/// The content to be shown in the [Route] created by this page.
final Widget child;
@ -468,8 +453,7 @@ class CupertinoPageTransition extends StatelessWidget {
required Animation<double> secondaryRouteAnimation,
required this.child,
required bool linearTransition,
}) : assert(linearTransition != null),
_primaryPositionAnimation =
}) : _primaryPositionAnimation =
(linearTransition
? primaryRouteAnimation
: CurvedAnimation(
@ -607,9 +591,7 @@ class _CupertinoBackGestureDetector<T> extends StatefulWidget {
required this.enabledCallback,
required this.onStartPopGesture,
required this.child,
}) : assert(enabledCallback != null),
assert(onStartPopGesture != null),
assert(child != null);
});
final Widget child;
@ -731,8 +713,7 @@ class _CupertinoBackGestureController<T> {
_CupertinoBackGestureController({
required this.navigator,
required this.controller,
}) : assert(navigator != null),
assert(controller != null) {
}) {
navigator.didStartUserGesture();
}
@ -854,7 +835,6 @@ class _CupertinoEdgeShadowDecoration extends Decoration {
_CupertinoEdgeShadowDecoration? b,
double t,
) {
assert(t != null);
if (a == null && b == null) {
return null;
}
@ -921,8 +901,7 @@ class _CupertinoEdgeShadowPainter extends BoxPainter {
_CupertinoEdgeShadowPainter(
this._decoration,
super.onChange,
) : assert(_decoration != null),
assert(_decoration._colors == null || _decoration._colors!.length > 1);
) : assert(_decoration._colors == null || _decoration._colors!.length > 1);
final _CupertinoEdgeShadowDecoration _decoration;
@ -1192,7 +1171,6 @@ Future<T?> showCupertinoModalPopup<T>({
RouteSettings? routeSettings,
Offset? anchorPoint,
}) {
assert(useRootNavigator != null);
return Navigator.of(context, rootNavigator: useRootNavigator).push(
CupertinoModalPopupRoute<T>(
builder: builder,
@ -1297,8 +1275,6 @@ Future<T?> showCupertinoDialog<T>({
RouteSettings? routeSettings,
Offset? anchorPoint,
}) {
assert(builder != null);
assert(useRootNavigator != null);
return Navigator.of(context, rootNavigator: useRootNavigator).push<T>(CupertinoDialogRoute<T>(
builder: builder,
@ -1361,8 +1337,7 @@ class CupertinoDialogRoute<T> extends RawDialogRoute<T> {
super.transitionBuilder = _buildCupertinoDialogTransitions,
super.settings,
super.anchorPoint,
}) : assert(barrierDismissible != null),
super(
}) : super(
pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {
return builder(context);
},

6
packages/flutter/lib/src/cupertino/scrollbar.dart
View File

@ -87,12 +87,8 @@ class CupertinoScrollbar extends RawScrollbar {
'This feature was deprecated after v2.9.0-1.0.pre.',
)
bool? isAlwaysShown,
}) : assert(thickness != null),
assert(thickness < double.infinity),
assert(thicknessWhileDragging != null),
}) : assert(thickness < double.infinity),
assert(thicknessWhileDragging < double.infinity),
assert(radius != null),
assert(radiusWhileDragging != null),
assert(
isAlwaysShown == null || thumbVisibility == null,
'Scrollbar thumb appearance should only be controlled with thumbVisibility, '

9
packages/flutter/lib/src/cupertino/search_field.dart
View File

@ -126,14 +126,7 @@ class CupertinoSearchTextField extends StatefulWidget {
this.onTap,
this.autocorrect = true,
this.enabled,
}) : assert(padding != null),
assert(itemColor != null),
assert(itemSize != null),
assert(prefixInsets != null),
assert(suffixInsets != null),
assert(suffixIcon != null),
assert(suffixMode != null),
assert(
}) : assert(
!((decoration != null) && (backgroundColor != null)),
'Cannot provide both a background color and a decoration\n'
'To provide both, use "decoration: BoxDecoration(color: '

9
packages/flutter/lib/src/cupertino/segmented_control.dart
View File

@ -99,9 +99,7 @@ class CupertinoSegmentedControl<T extends Object> extends StatefulWidget {
this.borderColor,
this.pressedColor,
this.padding,
}) : assert(children != null),
assert(children.length >= 2),
assert(onValueChanged != null),
}) : assert(children.length >= 2),
assert(
groupValue == null || children.keys.any((T child) => child == groupValue),
'The groupValue must be either null or one of the keys in the children map.',
@ -458,8 +456,7 @@ class _RenderSegmentedControl<T> extends RenderBox
required TextDirection textDirection,
required List<Color> backgroundColors,
required Color borderColor,
}) : assert(textDirection != null),
_textDirection = textDirection,
}) : _textDirection = textDirection,
_selectedIndex = selectedIndex,
_pressedIndex = pressedIndex,
_backgroundColors = backgroundColors,
@ -685,7 +682,6 @@ class _RenderSegmentedControl<T> extends RenderBox
}
void _paintChild(PaintingContext context, Offset offset, RenderBox child, int childIndex) {
assert(child != null);
final _SegmentedControlContainerBoxParentData childParentData = child.parentData! as _SegmentedControlContainerBoxParentData;
@ -708,7 +704,6 @@ class _RenderSegmentedControl<T> extends RenderBox
@override
bool hitTestChildren(BoxHitTestResult result, { required Offset position }) {
assert(position != null);
RenderBox? child = lastChild;
while (child != null) {
final _SegmentedControlContainerBoxParentData childParentData = child.parentData! as _SegmentedControlContainerBoxParentData;

15
packages/flutter/lib/src/cupertino/slider.dart
View File

@ -71,12 +71,8 @@ class CupertinoSlider extends StatefulWidget {
this.divisions,
this.activeColor,
this.thumbColor = CupertinoColors.white,
}) : assert(value != null),
assert(min != null),
assert(max != null),
assert(value >= min && value <= max),
assert(divisions == null || divisions > 0),
assert(thumbColor != null);
}) : assert(value >= min && value <= max),
assert(divisions == null || divisions > 0);
/// The currently selected value for this slider.
///
@ -337,9 +333,7 @@ class _RenderCupertinoSlider extends RenderConstrainedBox implements MouseTracke
required TickerProvider vsync,
required TextDirection textDirection,
MouseCursor cursor = MouseCursor.defer,
}) : assert(value != null && value >= 0.0 && value <= 1.0),
assert(textDirection != null),
assert(cursor != null),
}) : assert(value >= 0.0 && value <= 1.0),
_cursor = cursor,
_value = value,
_divisions = divisions,
@ -363,7 +357,7 @@ class _RenderCupertinoSlider extends RenderConstrainedBox implements MouseTracke
double get value => _value;
double _value;
set value(double newValue) {
assert(newValue != null && newValue >= 0.0 && newValue <= 1.0);
assert(newValue >= 0.0 && newValue <= 1.0);
if (newValue == _value) {
return;
}
@ -435,7 +429,6 @@ class _RenderCupertinoSlider extends RenderConstrainedBox implements MouseTracke
TextDirection get textDirection => _textDirection;
TextDirection _textDirection;
set textDirection(TextDirection value) {
assert(value != null);
if (_textDirection == value) {
return;
}

12
packages/flutter/lib/src/cupertino/sliding_segmented_control.dart
View File

@ -320,10 +320,7 @@ class CupertinoSlidingSegmentedControl<T> extends StatefulWidget {
this.thumbColor = _kThumbColor,
this.padding = _kHorizontalItemPadding,
this.backgroundColor = CupertinoColors.tertiarySystemFill,
}) : assert(children != null),
assert(children.length >= 2),
assert(padding != null),
assert(onValueChanged != null),
}) : assert(children.length >= 2),
assert(
groupValue == null || children.keys.contains(groupValue),
'The groupValue must be either null or one of the keys in the children map.',
@ -523,7 +520,6 @@ class _SegmentedControlState<T> extends State<CupertinoSlidingSegmentedControl<T
// _Segment widget) to make the overall animation look natural when the thumb
// is not sliding.
void _playThumbScaleAnimation({ required bool isExpanding }) {
assert(isExpanding != null);
thumbScaleAnimation = thumbScaleController.drive(
Tween<double>(
begin: thumbScaleAnimation.value,
@ -793,8 +789,7 @@ class _RenderSegmentedControl<T> extends RenderBox
required this.state,
}) : _highlightedIndex = highlightedIndex,
_thumbColor = thumbColor,
_thumbScale = thumbScale,
assert(state != null);
_thumbScale = thumbScale;
final _SegmentedControlState<T> state;
@ -1074,13 +1069,11 @@ class _RenderSegmentedControl<T> extends RenderBox
// Paint the separator to the right of the given child.
final Paint separatorPaint = Paint();
void _paintSeparator(PaintingContext context, Offset offset, RenderBox child) {
assert(child != null);
final _SegmentedControlContainerBoxParentData childParentData = child.parentData! as _SegmentedControlContainerBoxParentData;
context.paintChild(child, offset + childParentData.offset);
}
void _paintChild(PaintingContext context, Offset offset, RenderBox child) {
assert(child != null);
final _SegmentedControlContainerBoxParentData childParentData = child.parentData! as _SegmentedControlContainerBoxParentData;
context.paintChild(child, childParentData.offset + offset);
}
@ -1119,7 +1112,6 @@ class _RenderSegmentedControl<T> extends RenderBox
@override
bool hitTestChildren(BoxHitTestResult result, { required Offset position }) {
assert(position != null);
RenderBox? child = lastChild;
while (child != null) {
final _SegmentedControlContainerBoxParentData childParentData =

15
packages/flutter/lib/src/cupertino/switch.dart
View File

@ -76,8 +76,7 @@ class CupertinoSwitch extends StatefulWidget {
this.applyTheme,
this.focusColor,
this.dragStartBehavior = DragStartBehavior.start,
}) : assert(value != null),
assert(dragStartBehavior != null);
});
/// Whether this switch is on or off.
///
@ -473,10 +472,7 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
required TextDirection textDirection,
required bool isFocused,
required _CupertinoSwitchState state,
}) : assert(value != null),
assert(activeColor != null),
assert(state != null),
_value = value,
}) : _value = value,
_activeColor = activeColor,
_trackColor = trackColor,
_focusColor = focusColor,
@ -495,7 +491,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
bool get value => _value;
bool _value;
set value(bool value) {
assert(value != null);
if (value == _value) {
return;
}
@ -506,7 +501,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
Color get activeColor => _activeColor;
Color _activeColor;
set activeColor(Color value) {
assert(value != null);
if (value == _activeColor) {
return;
}
@ -517,7 +511,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
Color get trackColor => _trackColor;
Color _trackColor;
set trackColor(Color value) {
assert(value != null);
if (value == _trackColor) {
return;
}
@ -528,7 +521,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
Color get thumbColor => _thumbPainter.color;
CupertinoThumbPainter _thumbPainter;
set thumbColor(Color value) {
assert(value != null);
if (value == thumbColor) {
return;
}
@ -539,7 +531,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
Color get focusColor => _focusColor;
Color _focusColor;
set focusColor(Color value) {
assert(value != null);
if (value == _focusColor) {
return;
}
@ -564,7 +555,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
TextDirection get textDirection => _textDirection;
TextDirection _textDirection;
set textDirection(TextDirection value) {
assert(value != null);
if (_textDirection == value) {
return;
}
@ -575,7 +565,6 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
bool get isFocused => _isFocused;
bool _isFocused;
set isFocused(bool value) {
assert(value != null);
if(value == _isFocused) {
return;
}

23
packages/flutter/lib/src/cupertino/tab_scaffold.dart
View File

@ -36,7 +36,6 @@ class CupertinoTabController extends ChangeNotifier {
/// greater than or equal to 0, and less than the total number of tabs.
CupertinoTabController({ int initialIndex = 0 })
: _index = initialIndex,
assert(initialIndex != null),
assert(initialIndex >= 0);
bool _isDisposed = false;
@ -52,7 +51,6 @@ class CupertinoTabController extends ChangeNotifier {
int get index => _index;
int _index;
set index(int value) {
assert(value != null);
assert(value >= 0);
if (_index == value) {
return;
@ -135,9 +133,7 @@ class CupertinoTabScaffold extends StatefulWidget {
this.backgroundColor,
this.resizeToAvoidBottomInset = true,
this.restorationId,
}) : assert(tabBar != null),
assert(tabBuilder != null),
assert(
}) : assert(
controller == null || controller.index < tabBar.items.length,
"The CupertinoTabController's current index ${controller.index} is "
'out of bounds for the tab bar with ${tabBar.items.length} tabs',
@ -324,12 +320,10 @@ class _CupertinoTabScaffoldState extends State<CupertinoTabScaffold> with Restor
contentPadding = EdgeInsets.only(bottom: existingMediaQuery.viewInsets.bottom);
}
if (widget.tabBar != null &&
// Only pad the content with the height of the tab bar if the tab
// isn't already entirely obstructed by a keyboard or other view insets.
// Don't double pad.
(!widget.resizeToAvoidBottomInset ||
widget.tabBar.preferredSize.height > existingMediaQuery.viewInsets.bottom)) {
// Only pad the content with the height of the tab bar if the tab
// isn't already entirely obstructed by a keyboard or other view insets.
// Don't double pad.
if (!widget.resizeToAvoidBottomInset || widget.tabBar.preferredSize.height > existingMediaQuery.viewInsets.bottom) {
// TODO(xster): Use real size after partial layout instead of preferred size.
// https://github.com/flutter/flutter/issues/12912
final double bottomPadding =
@ -406,9 +400,7 @@ class _TabSwitchingView extends StatefulWidget {
required this.currentTabIndex,
required this.tabCount,
required this.tabBuilder,
}) : assert(currentTabIndex != null),
assert(tabCount != null && tabCount > 0),
assert(tabBuilder != null);
}) : assert(tabCount > 0);
final int currentTabIndex;
final int tabCount;
@ -530,8 +522,7 @@ class RestorableCupertinoTabController extends RestorableChangeNotifier<Cupertin
/// The `initialIndex` must not be null and defaults to 0. The value must be
/// greater than or equal to 0, and less than the total number of tabs.
RestorableCupertinoTabController({ int initialIndex = 0 })
: assert(initialIndex != null),
assert(initialIndex >= 0),
: assert(initialIndex >= 0),
_initialIndex = initialIndex;
final int _initialIndex;

2
packages/flutter/lib/src/cupertino/tab_view.dart
View File

@ -50,7 +50,7 @@ class CupertinoTabView extends StatefulWidget {
this.onUnknownRoute,
this.navigatorObservers = const <NavigatorObserver>[],
this.restorationScopeId,
}) : assert(navigatorObservers != null);
});
/// The widget builder for the default route of the tab view
/// ([Navigator.defaultRouteName], which is `/`).

40
packages/flutter/lib/src/cupertino/text_field.dart
View File

@ -281,35 +281,21 @@ class CupertinoTextField extends StatefulWidget {
this.contextMenuBuilder = _defaultContextMenuBuilder,
this.spellCheckConfiguration,
this.magnifierConfiguration,
}) : assert(textAlign != null),
assert(readOnly != null),
assert(autofocus != null),
assert(obscuringCharacter != null && obscuringCharacter.length == 1),
assert(obscureText != null),
assert(autocorrect != null),
}) : assert(obscuringCharacter.length == 1),
smartDashesType = smartDashesType ?? (obscureText ? SmartDashesType.disabled : SmartDashesType.enabled),
smartQuotesType = smartQuotesType ?? (obscureText ? SmartQuotesType.disabled : SmartQuotesType.enabled),
assert(enableSuggestions != null),
assert(scrollPadding != null),
assert(dragStartBehavior != null),
assert(selectionHeightStyle != null),
assert(selectionWidthStyle != null),
assert(maxLines == null || maxLines > 0),
assert(minLines == null || minLines > 0),
assert(
(maxLines == null) || (minLines == null) || (maxLines >= minLines),
"minLines can't be greater than maxLines",
),
assert(expands != null),
assert(
!expands || (maxLines == null && minLines == null),
'minLines and maxLines must be null when expands is true.',
),
assert(!obscureText || maxLines == 1, 'Obscured fields cannot be multiline.'),
assert(maxLength == null || maxLength > 0),
assert(clearButtonMode != null),
assert(prefixMode != null),
assert(suffixMode != null),
// Assert the following instead of setting it directly to avoid surprising the user by silently changing the value they set.
assert(
!identical(textInputAction, TextInputAction.newline) ||
@ -317,7 +303,6 @@ class CupertinoTextField extends StatefulWidget {
!identical(keyboardType, TextInputType.text),
'Use keyboardType TextInputType.multiline when using TextInputAction.newline on a multiline TextField.',
),
assert(enableIMEPersonalizedLearning != null),
keyboardType = keyboardType ?? (maxLines == 1 ? TextInputType.text : TextInputType.multiline),
enableInteractiveSelection = enableInteractiveSelection ?? (!readOnly || !obscureText);
@ -425,35 +410,21 @@ class CupertinoTextField extends StatefulWidget {
this.contextMenuBuilder = _defaultContextMenuBuilder,
this.spellCheckConfiguration,
this.magnifierConfiguration,
}) : assert(textAlign != null),
assert(readOnly != null),
assert(autofocus != null),
assert(obscuringCharacter != null && obscuringCharacter.length == 1),
assert(obscureText != null),
assert(autocorrect != null),
}) : assert(obscuringCharacter.length == 1),
smartDashesType = smartDashesType ?? (obscureText ? SmartDashesType.disabled : SmartDashesType.enabled),
smartQuotesType = smartQuotesType ?? (obscureText ? SmartQuotesType.disabled : SmartQuotesType.enabled),
assert(enableSuggestions != null),
assert(scrollPadding != null),
assert(dragStartBehavior != null),
assert(selectionHeightStyle != null),
assert(selectionWidthStyle != null),
assert(maxLines == null || maxLines > 0),
assert(minLines == null || minLines > 0),
assert(
(maxLines == null) || (minLines == null) || (maxLines >= minLines),
"minLines can't be greater than maxLines",
),
assert(expands != null),
assert(
!expands || (maxLines == null && minLines == null),
'minLines and maxLines must be null when expands is true.',
),
assert(!obscureText || maxLines == 1, 'Obscured fields cannot be multiline.'),
assert(maxLength == null || maxLength > 0),
assert(clearButtonMode != null),
assert(prefixMode != null),
assert(suffixMode != null),
// Assert the following instead of setting it directly to avoid surprising the user by silently changing the value they set.
assert(
!identical(textInputAction, TextInputAction.newline) ||
@ -461,8 +432,6 @@ class CupertinoTextField extends StatefulWidget {
!identical(keyboardType, TextInputType.text),
'Use keyboardType TextInputType.multiline when using TextInputAction.newline on a multiline TextField.',
),
assert(clipBehavior != null),
assert(enableIMEPersonalizedLearning != null),
keyboardType = keyboardType ?? (maxLines == 1 ? TextInputType.text : TextInputType.multiline),
enableInteractiveSelection = enableInteractiveSelection ?? (!readOnly || !obscureText);
@ -1102,9 +1071,6 @@ class _CupertinoTextFieldState extends State<CupertinoTextField> with Restoratio
}
Widget _addTextDependentAttachments(Widget editableText, TextStyle textStyle, TextStyle placeholderStyle) {
assert(editableText != null);
assert(textStyle != null);
assert(placeholderStyle != null);
// If there are no surrounding widgets, just return the core editable text
// part.
if (!_hasDecoration) {
@ -1267,7 +1233,7 @@ class _CupertinoTextFieldState extends State<CupertinoTextField> with Restoratio
? side
: side.copyWith(color: CupertinoDynamicColor.resolve(side.color, context));
}
resolvedBorder = border == null || border.runtimeType != Border
resolvedBorder = border.runtimeType != Border
? border
: Border(
top: resolveBorderSide(border.top),

11
packages/flutter/lib/src/cupertino/text_form_field_row.dart
View File

@ -158,28 +158,19 @@ class CupertinoTextFormFieldRow extends FormField<String> {
),
EditableTextContextMenuBuilder? contextMenuBuilder = _defaultContextMenuBuilder,
}) : assert(initialValue == null || controller == null),
assert(textAlign != null),
assert(autofocus != null),
assert(readOnly != null),
assert(obscuringCharacter != null && obscuringCharacter.length == 1),
assert(obscureText != null),
assert(autocorrect != null),
assert(enableSuggestions != null),
assert(scrollPadding != null),
assert(obscuringCharacter.length == 1),
assert(maxLines == null || maxLines > 0),
assert(minLines == null || minLines > 0),
assert(
(maxLines == null) || (minLines == null) || (maxLines >= minLines),
"minLines can't be greater than maxLines",
),
assert(expands != null),
assert(
!expands || (maxLines == null && minLines == null),
'minLines and maxLines must be null when expands is true.',
),
assert(!obscureText || maxLines == 1, 'Obscured fields cannot be multiline.'),
assert(maxLength == null || maxLength > 0),
assert(enableInteractiveSelection != null),
super(
initialValue: controller?.text ?? initialValue ?? '',
builder: (FormFieldState<String> field) {

15
packages/flutter/lib/src/cupertino/text_selection_toolbar.dart
View File

@ -426,8 +426,7 @@ class _CupertinoTextSelectionToolbarContent extends StatefulWidget {
required this.isAbove,
required this.toolbarBuilder,
required this.children,
}) : assert(children != null),
assert(children.length > 0);
}) : assert(children.length > 0);
final Offset anchor;
final List<Widget> children;
@ -533,13 +532,7 @@ class _CupertinoTextSelectionToolbarItems extends RenderObjectWidget {
required this.dividerWidth,
required this.nextButton,
required this.nextButtonDisabled,
}) : assert(children != null),
assert(children.isNotEmpty),
assert(backButton != null),
assert(dividerWidth != null),
assert(nextButton != null),
assert(nextButtonDisabled != null),
assert(page != null);
}) : assert(children.isNotEmpty);
final Widget backButton;
final List<Widget> children;
@ -732,9 +725,7 @@ class _RenderCupertinoTextSelectionToolbarItems extends RenderBox with Container
_RenderCupertinoTextSelectionToolbarItems({
required double dividerWidth,
required int page,
}) : assert(dividerWidth != null),
assert(page != null),
_dividerWidth = dividerWidth,
}) : _dividerWidth = dividerWidth,
_page = page,
super();

6
packages/flutter/lib/src/cupertino/text_selection_toolbar_button.dart
View File

@ -42,8 +42,7 @@ class CupertinoTextSelectionToolbarButton extends StatelessWidget {
super.key,
this.onPressed,
required Widget this.child,
}) : assert(child != null),
text = null,
}) : text = null,
buttonItem = null;
/// Create an instance of [CupertinoTextSelectionToolbarButton] whose child is
@ -62,8 +61,7 @@ class CupertinoTextSelectionToolbarButton extends StatelessWidget {
CupertinoTextSelectionToolbarButton.buttonItem({
super.key,
required ContextMenuButtonItem this.buttonItem,
}) : assert(buttonItem != null),
child = null,
}) : child = null,
text = null,
onPressed = buttonItem.onPressed;

3
packages/flutter/lib/src/cupertino/text_theme.dart
View File

@ -268,8 +268,7 @@ class _TextThemeDefaultsBuilder {
const _TextThemeDefaultsBuilder(
this.labelColor,
this.inactiveGrayColor,
) : assert(labelColor != null),
assert(inactiveGrayColor != null);
);
final Color labelColor;
final Color inactiveGrayColor;

10
packages/flutter/lib/src/cupertino/theme.dart
View File

@ -53,8 +53,7 @@ class CupertinoTheme extends StatelessWidget {
super.key,
required this.data,
required this.child,
}) : assert(child != null),
assert(data != null);
});
/// The [CupertinoThemeData] styling for this theme.
final CupertinoThemeData data;
@ -137,7 +136,7 @@ class _InheritedCupertinoTheme extends InheritedWidget {
const _InheritedCupertinoTheme({
required this.theme,
required super.child,
}) : assert(theme != null);
});
final CupertinoTheme theme;
@ -528,7 +527,6 @@ class _CupertinoTextThemeDefaults {
}
CupertinoTextThemeData createDefaults({ required Color primaryColor }) {
assert(primaryColor != null);
return _DefaultCupertinoTextThemeData(
primaryColor: primaryColor,
labelColor: labelColor,
@ -545,9 +543,7 @@ class _DefaultCupertinoTextThemeData extends CupertinoTextThemeData {
required this.labelColor,
required this.inactiveGray,
required super.primaryColor,
}) : assert(labelColor != null),
assert(inactiveGray != null),
assert(primaryColor != null);
});
final Color labelColor;
final Color inactiveGray;

2
packages/flutter/lib/src/cupertino/thumb_painter.dart
View File

@ -47,7 +47,7 @@ class CupertinoThumbPainter {
const CupertinoThumbPainter({
this.color = CupertinoColors.white,
this.shadows = _kSliderBoxShadows,
}) : assert(shadows != null);
});
/// Creates an object that paints an iOS-style switch thumb.
const CupertinoThumbPainter.switchThumb({