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Final definite assignment (#67682)

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Alexandre Ardhuin 2020-10-10 23:42:02 +02:00 committed by GitHub
parent 1a9d635f64
commit eefcff900c
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92 changed files with 231 additions and 245 deletions
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15
packages/flutter/lib/src/animation/animation.dart
View file

@ -191,22 +191,15 @@ abstract class Animation<T> extends Listenable implements ValueListenable<T> {
/// * "&#x23EE;": [AnimationStatus.dismissed] ([value] == 0.0)
String toStringDetails() {
assert(status != null);
String icon;
switch (status) {
case AnimationStatus.forward:
icon = '\u25B6'; // >
break;
return '\u25B6'; // >
case AnimationStatus.reverse:
icon = '\u25C0'; // <
break;
return '\u25C0'; // <
case AnimationStatus.completed:
icon = '\u23ED'; // >>|
break;
return '\u23ED'; // >>|
case AnimationStatus.dismissed:
icon = '\u23EE'; // |<<
break;
return '\u23EE'; // |<<
}
assert(icon != null);
return icon;
}
}

6
packages/flutter/lib/src/animation/curves.dart
View file

@ -738,9 +738,9 @@ class CatmullRomSpline extends Curve2D {
Offset transformInternal(double t) {
_initializeIfNeeded();
final double length = _cubicSegments.length.toDouble();
double position;
double localT;
int index;
final double position;
final double localT;
final int index;
if (t < 1.0) {
position = t * length;
localT = position % 1.0;

2
packages/flutter/lib/src/cupertino/action_sheet.dart
View file

@ -275,7 +275,7 @@ class CupertinoActionSheet extends StatelessWidget {
];
final Orientation orientation = MediaQuery.of(context)!.orientation;
double actionSheetWidth;
final double actionSheetWidth;
if (orientation == Orientation.portrait) {
actionSheetWidth = MediaQuery.of(context)!.size.width - (_kEdgeHorizontalPadding * 2);
} else {

2
packages/flutter/lib/src/cupertino/colors.dart
View file

@ -956,7 +956,7 @@ class CupertinoDynamicColor extends Color with Diagnosticable {
? CupertinoUserInterfaceLevel.of(context, nullOk: nullOk) ?? CupertinoUserInterfaceLevelData.base
: CupertinoUserInterfaceLevelData.base;
Color resolved;
final Color resolved;
switch (brightness) {
case Brightness.light:
switch (level) {

12
packages/flutter/lib/src/cupertino/dialog.dart
View file

@ -726,8 +726,8 @@ class _RenderCupertinoDialog extends RenderBox {
final double maxContentHeight = contentSection!.getMaxIntrinsicHeight(_dialogWidth);
final double maxActionsHeight = actionsSection!.getMaxIntrinsicHeight(_dialogWidth);
Size contentSize;
Size actionsSize;
final Size contentSize;
final Size actionsSize;
if (maxContentHeight + dividerThickness + maxActionsHeight > constraints.maxHeight) {
// There isn't enough room for everything. Following iOS's accessibility dialog
// layout policy, first we allow the actions to take up to 50% of the dialog
@ -1435,7 +1435,7 @@ class _RenderCupertinoDialogActions extends RenderBox
@override
double computeMinIntrinsicHeight(double width) {
double minHeight;
final double minHeight;
if (childCount == 0) {
minHeight = 0.0;
} else if (childCount == 1) {
@ -1459,7 +1459,7 @@ class _RenderCupertinoDialogActions extends RenderBox
double _computeMinIntrinsicHeightSideBySide(double width) {
assert(childCount >= 1 && childCount <= 2);
double minHeight;
final double minHeight;
if (childCount == 1) {
minHeight = firstChild!.getMinIntrinsicHeight(width);
} else {
@ -1484,7 +1484,7 @@ class _RenderCupertinoDialogActions extends RenderBox
@override
double computeMaxIntrinsicHeight(double width) {
double maxHeight;
final double maxHeight;
if (childCount == 0) {
// No buttons. Zero height.
maxHeight = 0.0;
@ -1530,7 +1530,7 @@ class _RenderCupertinoDialogActions extends RenderBox
}
bool _isSingleButtonRow(double width) {
bool isSingleButtonRow;
final bool isSingleButtonRow;
if (childCount == 1) {
isSingleButtonRow = true;
} else if (childCount == 2) {

2
packages/flutter/lib/src/cupertino/nav_bar.dart
View file

@ -96,7 +96,7 @@ Widget _wrapWithBackground({
if (updateSystemUiOverlay) {
final bool isDark = backgroundColor.computeLuminance() < 0.179;
final Brightness newBrightness = brightness ?? (isDark ? Brightness.dark : Brightness.light);
SystemUiOverlayStyle overlayStyle;
final SystemUiOverlayStyle overlayStyle;
switch (newBrightness) {
case Brightness.dark:
overlayStyle = SystemUiOverlayStyle.light;

2
packages/flutter/lib/src/cupertino/picker.dart
View file

@ -236,7 +236,7 @@ class _CupertinoPickerState extends State<CupertinoPicker> {
void _handleSelectedItemChanged(int index) {
// Only the haptic engine hardware on iOS devices would produce the
// intended effects.
bool hasSuitableHapticHardware;
final bool hasSuitableHapticHardware;
switch (defaultTargetPlatform) {
case TargetPlatform.iOS:
hasSuitableHapticHardware = true;

4
packages/flutter/lib/src/cupertino/route.dart
View file

@ -756,7 +756,7 @@ class _CupertinoBackGestureController<T> {
// This curve has been determined through rigorously eyeballing native iOS
// animations.
const Curve animationCurve = Curves.fastLinearToSlowEaseIn;
bool animateForward;
final bool animateForward;
// If the user releases the page before mid screen with sufficient velocity,
// or after mid screen, we should animate the page out. Otherwise, the page
@ -911,7 +911,7 @@ class _CupertinoEdgeShadowPainter extends BoxPainter {
// its parent box one box width on the start side of the box.
final TextDirection? textDirection = configuration.textDirection;
assert(textDirection != null);
double deltaX;
final double deltaX;
switch (textDirection!) {
case TextDirection.rtl:
deltaX = configuration.size!.width;

2
packages/flutter/lib/src/cupertino/segmented_control.dart
View file

@ -611,7 +611,7 @@ class _RenderSegmentedControl<T> extends RenderBox
final Offset childOffset = Offset(start, 0.0);
childParentData.offset = childOffset;
final Rect childRect = Rect.fromLTWH(start, 0.0, child.size.width, child.size.height);
RRect rChildRect;
final RRect rChildRect;
if (child == leftChild) {
rChildRect = RRect.fromRectAndCorners(childRect, topLeft: const Radius.circular(3.0),
bottomLeft: const Radius.circular(3.0));

8
packages/flutter/lib/src/cupertino/slider.dart
View file

@ -439,7 +439,7 @@ class _RenderCupertinoSlider extends RenderConstrainedBox {
double get _trackLeft => _kPadding;
double get _trackRight => size.width - _kPadding;
double get _thumbCenter {
double visualPosition;
final double visualPosition;
switch (textDirection) {
case TextDirection.rtl:
visualPosition = 1.0 - _value;
@ -504,9 +504,9 @@ class _RenderCupertinoSlider extends RenderConstrainedBox {
@override
void paint(PaintingContext context, Offset offset) {
double visualPosition;
Color leftColor;
Color rightColor;
final double visualPosition;
final Color leftColor;
final Color rightColor;
switch (textDirection) {
case TextDirection.rtl:
visualPosition = 1.0 - _position.value;

2
packages/flutter/lib/src/cupertino/switch.dart
View file

@ -483,7 +483,7 @@ class _RenderCupertinoSwitch extends RenderConstrainedBox {
final double currentValue = _state.position.value;
final double currentReactionValue = _state._reaction.value;
double visualPosition;
final double visualPosition;
switch (textDirection) {
case TextDirection.rtl:
visualPosition = 1.0 - currentValue;

2
packages/flutter/lib/src/foundation/assertions.dart
View file

@ -629,7 +629,7 @@ class FlutterErrorDetails with Diagnosticable {
} else if (exception is num) {
properties.add(ErrorDescription('The number $exception was $verb.'));
} else {
DiagnosticsNode errorName;
final DiagnosticsNode errorName;
if (exception is AssertionError) {
errorName = ErrorDescription('assertion');
} else if (exception is String) {

6
packages/flutter/lib/src/gestures/monodrag.dart
View file

@ -323,7 +323,7 @@ abstract class DragGestureRecognizer extends OneSequenceGestureRecognizer {
final OffsetPair delta = _pendingDragOffset;
final Duration timestamp = _lastPendingEventTimestamp!;
final Matrix4? transform = _lastTransform;
Offset localUpdateDelta;
final Offset localUpdateDelta;
switch (dragStartBehavior) {
case DragStartBehavior.start:
_initialPosition = _initialPosition + delta;
@ -442,8 +442,8 @@ abstract class DragGestureRecognizer extends OneSequenceGestureRecognizer {
final VelocityTracker tracker = _velocityTrackers[pointer]!;
assert(tracker != null);
DragEndDetails details;
String Function() debugReport;
final DragEndDetails details;
final String Function() debugReport;
final VelocityEstimate? estimate = tracker.getVelocityEstimate();
if (estimate != null && isFlingGesture(estimate, tracker.kind)) {

2
packages/flutter/lib/src/material/about.dart
View file

@ -907,7 +907,7 @@ class _PackageLicensePageState extends State<_PackageLicensePage> {
),
];
Widget page;
final Widget page;
if (widget.scrollController == null) {
page = Scaffold(
appBar: AppBar(

12
packages/flutter/lib/src/material/bottom_navigation_bar.dart
View file

@ -381,7 +381,7 @@ class _BottomNavigationTile extends StatelessWidget {
// need to divide the changes in flex allotment into smaller pieces to
// produce smooth animation. We do this by multiplying the flex value
// (which is an integer) by a large number.
int size;
final int size;
final BottomNavigationBarThemeData bottomTheme = BottomNavigationBarTheme.of(context);
@ -418,8 +418,8 @@ class _BottomNavigationTile extends StatelessWidget {
// | text
// | <-- Padding equal to 1/2 text height + 1/2 unselectedIconDiff.
// =======
double bottomPadding;
double topPadding;
final double bottomPadding;
final double topPadding;
if (showSelectedLabels! && !showUnselectedLabels!) {
bottomPadding = Tween<double>(
begin: selectedIconDiff / 2.0,
@ -840,7 +840,7 @@ class _BottomNavigationBarState extends State<BottomNavigationBar> with TickerPr
widget.unselectedFontSize,
);
Color themeColor;
final Color themeColor;
switch (themeData.brightness) {
case Brightness.light:
themeColor = themeData.primaryColor;
@ -850,7 +850,7 @@ class _BottomNavigationBarState extends State<BottomNavigationBar> with TickerPr
break;
}
ColorTween colorTween;
final ColorTween colorTween;
switch (_effectiveType) {
case BottomNavigationBarType.fixed:
colorTween = ColorTween(
@ -1051,7 +1051,7 @@ class _RadialPainter extends CustomPainter {
final Paint paint = Paint()..color = circle.color;
final Rect rect = Rect.fromLTWH(0.0, 0.0, size.width, size.height);
canvas.clipRect(rect);
double leftFraction;
final double leftFraction;
switch (textDirection) {
case TextDirection.rtl:
leftFraction = 1.0 - circle.horizontalLeadingOffset;

2
packages/flutter/lib/src/material/button.dart
View file

@ -451,7 +451,7 @@ class _RawMaterialButtonState extends State<RawMaterialButton> {
),
),
);
Size minSize;
final Size minSize;
switch (widget.materialTapTargetSize) {
case MaterialTapTargetSize.padded:
minSize = Size(

2
packages/flutter/lib/src/material/button_style_button.dart
View file

@ -371,7 +371,7 @@ class _ButtonStyleState extends State<ButtonStyleButton> with TickerProviderStat
),
);
Size minSize;
final Size minSize;
switch (resolvedTapTargetSize!) {
case MaterialTapTargetSize.padded:
minSize = Size(

12
packages/flutter/lib/src/material/chip.dart
View file

@ -1924,7 +1924,7 @@ class _RawChipState extends State<RawChip> with TickerProviderStateMixin<RawChip
),
),
);
BoxConstraints constraints;
final BoxConstraints constraints;
final Offset densityAdjustment = (widget.visualDensity ?? theme.visualDensity).baseSizeAdjustment;
switch (widget.materialTapTargetSize ?? theme.materialTapTargetSize) {
case MaterialTapTargetSize.padded:
@ -2570,16 +2570,12 @@ class _RenderChip extends RenderBox {
Offset centerLayout(Size boxSize, double x) {
assert(contentSize >= boxSize.height);
Offset boxOffset;
switch (textDirection!) {
case TextDirection.rtl:
boxOffset = Offset(x - boxSize.width, (contentSize - boxSize.height + densityAdjustment.dy) / 2.0);
break;
return Offset(x - boxSize.width, (contentSize - boxSize.height + densityAdjustment.dy) / 2.0);
case TextDirection.ltr:
boxOffset = Offset(x, (contentSize - boxSize.height + densityAdjustment.dy) / 2.0);
break;
return Offset(x, (contentSize - boxSize.height + densityAdjustment.dy) / 2.0);
}
return boxOffset;
}
// These are the offsets to the upper left corners of the boxes (including
@ -2687,7 +2683,7 @@ class _RenderChip extends RenderBox {
if (enableAnimation == null || enableAnimation.isCompleted) {
return Colors.white;
}
ColorTween enableTween;
final ColorTween enableTween;
switch (theme.brightness) {
case Brightness.light:
enableTween = ColorTween(

4
packages/flutter/lib/src/material/data_table.dart
View file

@ -954,7 +954,7 @@ class DataTable extends StatelessWidget {
for (int dataColumnIndex = 0; dataColumnIndex < columns.length; dataColumnIndex += 1) {
final DataColumn column = columns[dataColumnIndex];
double paddingStart;
final double paddingStart;
if (dataColumnIndex == 0 && displayCheckboxColumn) {
paddingStart = effectiveHorizontalMargin / 2.0;
} else if (dataColumnIndex == 0 && !displayCheckboxColumn) {
@ -963,7 +963,7 @@ class DataTable extends StatelessWidget {
paddingStart = effectiveColumnSpacing / 2.0;
}
double paddingEnd;
final double paddingEnd;
if (dataColumnIndex == columns.length - 1) {
paddingEnd = effectiveHorizontalMargin;
} else {

2
packages/flutter/lib/src/material/drawer.dart
View file

@ -534,7 +534,7 @@ class DrawerControllerState extends State<DrawerController> with SingleTickerPro
return const SizedBox.shrink();
}
} else {
bool platformHasBackButton;
final bool platformHasBackButton;
switch (Theme.of(context)!.platform) {
case TargetPlatform.android:
platformHasBackButton = true;

8
packages/flutter/lib/src/material/dropdown.dart
View file

@ -126,7 +126,7 @@ class _DropdownMenuItemButton<T> extends StatefulWidget {
class _DropdownMenuItemButtonState<T> extends State<_DropdownMenuItemButton<T>> {
void _handleFocusChange(bool focused) {
bool inTraditionalMode;
final bool inTraditionalMode;
switch (FocusManager.instance.highlightMode) {
case FocusHighlightMode.touch:
inTraditionalMode = false;
@ -166,7 +166,7 @@ class _DropdownMenuItemButtonState<T> extends State<_DropdownMenuItemButton<T>>
@override
Widget build(BuildContext context) {
CurvedAnimation opacity;
final CurvedAnimation opacity;
final double unit = 0.5 / (widget.route.items.length + 1.5);
if (widget.itemIndex == widget.route.selectedIndex) {
opacity = CurvedAnimation(parent: widget.route.animation!, curve: const Threshold(0.0));
@ -349,7 +349,7 @@ class _DropdownMenuRouteLayout<T> extends SingleChildLayoutDelegate {
return true;
}());
assert(textDirection != null);
double left;
final double left;
switch (textDirection!) {
case TextDirection.rtl:
left = buttonRect.right.clamp(0.0, size.width) - childSize.width;
@ -1337,7 +1337,7 @@ class _DropdownButtonState<T> extends State<DropdownButton<T>> with WidgetsBindi
// If value is null (then _selectedIndex is null) or if disabled then we
// display the hint or nothing at all.
final int? index = _enabled ? (_selectedIndex ?? hintIndex) : hintIndex;
Widget innerItemsWidget;
final Widget innerItemsWidget;
if (items.isEmpty) {
innerItemsWidget = Container();
} else {

4
packages/flutter/lib/src/material/ink_well.dart
View file

@ -926,7 +926,7 @@ class _InkResponseState extends State<_InkResponseStateWidget>
}
void _updateFocusHighlights() {
bool showFocus;
final bool showFocus;
switch (FocusManager.instance.highlightMode) {
case FocusHighlightMode.touch:
showFocus = false;
@ -959,7 +959,7 @@ class _InkResponseState extends State<_InkResponseStateWidget>
void _startSplash({TapDownDetails? details, BuildContext? context}) {
assert(details != null || context != null);
Offset globalPosition;
final Offset globalPosition;
if (context != null) {
final RenderBox referenceBox = context.findRenderObject()! as RenderBox;
assert(referenceBox.hasSize, 'InkResponse must be done with layout before starting a splash.');

14
packages/flutter/lib/src/material/input_decorator.dart
View file

@ -1290,7 +1290,7 @@ class _RenderDecoration extends RenderBox {
width: overallWidth - _boxSize(icon).width,
);
container!.layout(containerConstraints, parentUsesSize: true);
double x;
final double x;
switch (textDirection) {
case TextDirection.rtl:
x = 0.0;
@ -1321,7 +1321,7 @@ class _RenderDecoration extends RenderBox {
baseline = _isOutlineAligned ? layout.outlineBaseline : layout.inputBaseline;
if (icon != null) {
double x;
final double x;
switch (textDirection) {
case TextDirection.rtl:
x = overallWidth - icon!.size.width;
@ -1461,7 +1461,7 @@ class _RenderDecoration extends RenderBox {
? isOutlineBorder ? (-labelHeight * _kFinalLabelScale) / 2.0 + borderWeight / 2.0 : contentPadding.top
: isOutlineBorder ? -labelHeight * 0.25 : contentPadding.top;
final double scale = lerpDouble(1.0, _kFinalLabelScale, t)!;
double dx;
final double dx;
switch (textDirection) {
case TextDirection.rtl:
dx = labelOffset.dx + label!.size.width * (1.0 - scale); // origin is on the right
@ -2116,7 +2116,7 @@ class _InputDecoratorState extends State<InputDecorator> with TickerProviderStat
return decoration!.border!;
}
Color borderColor;
final Color borderColor;
if (decoration!.enabled || isFocused) {
borderColor = decoration!.errorText == null
? _getDefaultBorderColor(themeData)
@ -2127,7 +2127,7 @@ class _InputDecoratorState extends State<InputDecorator> with TickerProviderStat
: themeData.disabledColor;
}
double borderWeight;
final double borderWeight;
if (decoration!.isCollapsed || decoration?.border == InputBorder.none || !decoration!.enabled)
borderWeight = 0.0;
else
@ -2310,8 +2310,8 @@ class _InputDecoratorState extends State<InputDecorator> with TickerProviderStat
final TextDirection textDirection = Directionality.of(context)!;
final EdgeInsets? decorationContentPadding = decoration!.contentPadding?.resolve(textDirection);
EdgeInsets contentPadding;
double floatingLabelHeight;
final EdgeInsets contentPadding;
final double floatingLabelHeight;
if (decoration!.isCollapsed) {
floatingLabelHeight = 0.0;
contentPadding = decorationContentPadding ?? EdgeInsets.zero;

6
packages/flutter/lib/src/material/list_tile.dart
View file

@ -976,7 +976,7 @@ class ListTile extends StatelessWidget {
}
TextStyle _titleTextStyle(ThemeData theme, ListTileTheme? tileTheme) {
TextStyle style;
final TextStyle style;
if (tileTheme != null) {
switch (tileTheme.style) {
case ListTileStyle.drawer:
@ -1646,8 +1646,8 @@ class _RenderListTile extends RenderBox {
// - For smaller tiles, trailing should always be centered. Leading can be
// centered or closer to the top. It should never be further than 16dp
// to the top.
double leadingY;
double trailingY;
final double leadingY;
final double trailingY;
if (tileHeight > 72.0) {
leadingY = 16.0;
trailingY = 16.0;

4
packages/flutter/lib/src/material/mergeable_material.dart
View file

@ -562,13 +562,13 @@ class _MergeableMaterialState extends State<MergeableMaterial> with TickerProvid
final bool hasTopDivider = _willNeedDivider(i - 1);
final bool hasBottomDivider = _willNeedDivider(i + 1);
Border border;
final BorderSide divider = Divider.createBorderSide(
context,
width: 0.5, // TODO(ianh): This probably looks terrible when the dpr isn't a power of two.
color: widget.dividerColor,
);
final Border border;
if (i == 0) {
border = Border(
bottom: hasBottomDivider ? divider : BorderSide.none
@ -584,8 +584,6 @@ class _MergeableMaterialState extends State<MergeableMaterial> with TickerProvid
);
}
assert(border != null);
child = AnimatedContainer(
key: _MergeableMaterialSliceKey(_children[i].key),
decoration: BoxDecoration(border: border),

2
packages/flutter/lib/src/material/navigation_rail.dart
View file

@ -622,7 +622,7 @@ class _RailDestination extends StatelessWidget {
style: labelTextStyle,
child: label,
);
Widget content;
final Widget content;
switch (labelType) {
case NavigationRailLabelType.none:
final Widget iconPart = SizedBox(

2
packages/flutter/lib/src/material/pickers/calendar_date_picker.dart
View file

@ -1155,7 +1155,7 @@ class _YearPickerState extends State<_YearPicker> {
const double decorationHeight = 36.0;
const double decorationWidth = 72.0;
Color textColor;
final Color textColor;
if (isSelected) {
textColor = colorScheme.onPrimary;
} else if (isDisabled) {

6
packages/flutter/lib/src/material/pickers/date_picker_dialog.dart
View file

@ -393,9 +393,9 @@ class _DatePickerDialogState extends State<_DatePickerDialog> {
),
);
Widget picker;
IconData entryModeIcon;
String entryModeTooltip;
final Widget picker;
final IconData entryModeIcon;
final String entryModeTooltip;
switch (_entryMode) {
case DatePickerEntryMode.calendar:
picker = CalendarDatePicker(

8
packages/flutter/lib/src/material/pickers/date_range_picker_dialog.dart
View file

@ -340,11 +340,11 @@ class _DateRangePickerDialogState extends State<_DateRangePickerDialog> {
final double textScaleFactor = math.min(mediaQuery.textScaleFactor, 1.3);
final MaterialLocalizations localizations = MaterialLocalizations.of(context)!;
Widget contents;
Size size;
final Widget contents;
final Size size;
ShapeBorder? shape;
double elevation;
EdgeInsets insetPadding;
final double elevation;
final EdgeInsets insetPadding;
switch (_entryMode) {
case DatePickerEntryMode.calendar:
contents = _CalendarRangePickerDialog(

2
packages/flutter/lib/src/material/progress_indicator.dart
View file

@ -167,7 +167,7 @@ class _LinearProgressIndicatorPainter extends CustomPainter {
if (width <= 0.0)
return;
double left;
final double left;
switch (textDirection) {
case TextDirection.rtl:
left = size.width - width - x;

14
packages/flutter/lib/src/material/range_slider.dart
View file

@ -542,8 +542,8 @@ class _RangeSliderState extends State<RangeSlider> with TickerProviderStateMixin
// thumb selection is determined by the direction of the dx. The left thumb
// is chosen for negative dx, and the right thumb is chosen for positive dx.
if (inStartTouchTarget && inEndTouchTarget) {
bool towardsStart;
bool towardsEnd;
final bool towardsStart;
final bool towardsEnd;
switch (textDirection) {
case TextDirection.ltr:
towardsStart = dx < 0;
@ -599,7 +599,7 @@ class _RangeSliderState extends State<RangeSlider> with TickerProviderStateMixin
// RectangularSliderValueIndicatorShape is used. In all other cases, the
// value indicator is assumed to be the same as the active color.
final RangeSliderValueIndicatorShape valueIndicatorShape = sliderTheme.rangeValueIndicatorShape ?? _defaultValueIndicatorShape;
Color valueIndicatorColor;
final Color valueIndicatorColor;
if (valueIndicatorShape is RectangularRangeSliderValueIndicatorShape) {
valueIndicatorColor = sliderTheme.valueIndicatorColor ?? Color.alphaBlend(theme.colorScheme.onSurface.withOpacity(0.60), theme.colorScheme.surface.withOpacity(0.90));
} else {
@ -1030,8 +1030,8 @@ class _RenderRangeSlider extends RenderBox with RelayoutWhenSystemFontsChangeMix
if (labels == null)
return;
String text;
TextPainter labelPainter;
final String text;
final TextPainter labelPainter;
switch (thumb) {
case Thumb.start:
text = labels!.start;
@ -1280,8 +1280,8 @@ class _RenderRangeSlider extends RenderBox with RelayoutWhenSystemFontsChangeMix
// The visual position is the position of the thumb from 0 to 1 from left
// to right. In left to right, this is the same as the value, but it is
// reversed for right to left text.
double startVisualPosition;
double endVisualPosition;
final double startVisualPosition;
final double endVisualPosition;
switch (textDirection) {
case TextDirection.rtl:
startVisualPosition = 1.0 - startValue;

6
packages/flutter/lib/src/material/reorderable_list.dart
View file

@ -249,7 +249,7 @@ class _ReorderableListContentState extends State<_ReorderableListContent> with T
if (_draggingFeedbackSize == null) {
return _defaultDropAreaExtent;
}
double dropAreaWithoutMargin;
final double dropAreaWithoutMargin;
switch (widget.scrollDirection) {
case Axis.horizontal:
dropAreaWithoutMargin = _draggingFeedbackSize!.width;
@ -488,7 +488,7 @@ class _ReorderableListContentState extends State<_ReorderableListContent> with T
}
// Determine the size of the drop area to show under the dragging widget.
Widget spacing;
final Widget spacing;
switch (widget.scrollDirection) {
case Axis.horizontal:
spacing = SizedBox(width: _dropAreaExtent);
@ -551,7 +551,7 @@ class _ReorderableListContentState extends State<_ReorderableListContent> with T
// We use the layout builder to constrain the cross-axis size of dragging child widgets.
return LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {
const Key endWidgetKey = Key('DraggableList - End Widget');
Widget finalDropArea;
final Widget finalDropArea;
switch (widget.scrollDirection) {
case Axis.horizontal:
finalDropArea = SizedBox(

2
packages/flutter/lib/src/material/scaffold.dart
View file

@ -969,7 +969,7 @@ class _ScaffoldLayout extends MultiChildLayoutDelegate {
);
}
double snackBarYOffsetBase;
final double snackBarYOffsetBase;
if (floatingActionButtonRect.size != Size.zero && isSnackBarFloating) {
snackBarYOffsetBase = floatingActionButtonRect.top;
} else {

2
packages/flutter/lib/src/material/search.dart
View file

@ -499,7 +499,7 @@ class _SearchPageState<T> extends State<_SearchPage<T>> {
case null:
break;
}
String routeName;
final String routeName;
switch (theme.platform) {
case TargetPlatform.iOS:
case TargetPlatform.macOS:

8
packages/flutter/lib/src/material/selectable_text.dart
View file

@ -565,12 +565,12 @@ class _SelectableTextState extends State<SelectableText> with AutomaticKeepAlive
final TextSelectionThemeData selectionTheme = TextSelectionTheme.of(context);
final FocusNode focusNode = _effectiveFocusNode;
TextSelectionControls textSelectionControls;
bool paintCursorAboveText;
bool cursorOpacityAnimates;
final TextSelectionControls textSelectionControls;
final bool paintCursorAboveText;
final bool cursorOpacityAnimates;
Offset? cursorOffset;
Color? cursorColor = widget.cursorColor;
Color selectionColor;
final Color selectionColor;
Radius? cursorRadius = widget.cursorRadius;
switch (theme.platform) {

4
packages/flutter/lib/src/material/slider.dart
View file

@ -660,7 +660,7 @@ class _SliderState extends State<Slider> with TickerProviderStateMixin {
// RectangularSliderValueIndicatorShape is used. In all other cases, the
// value indicator is assumed to be the same as the active color.
final SliderComponentShape valueIndicatorShape = sliderTheme.valueIndicatorShape ?? _defaultValueIndicatorShape;
Color valueIndicatorColor;
final Color valueIndicatorColor;
if (valueIndicatorShape is RectangularSliderValueIndicatorShape) {
valueIndicatorColor = sliderTheme.valueIndicatorColor ?? Color.alphaBlend(theme.colorScheme.onSurface.withOpacity(0.60), theme.colorScheme.surface.withOpacity(0.90));
} else {
@ -1343,7 +1343,7 @@ class _RenderSlider extends RenderBox with RelayoutWhenSystemFontsChangeMixin {
// The visual position is the position of the thumb from 0 to 1 from left
// to right. In left to right, this is the same as the value, but it is
// reversed for right to left text.
double visualPosition;
final double visualPosition;
switch (textDirection) {
case TextDirection.rtl:
visualPosition = 1.0 - value;

18
packages/flutter/lib/src/material/slider_theme.dart
View file

@ -1537,8 +1537,8 @@ class RectangularSliderTrackShape extends SliderTrackShape with BaseSliderTrackS
final ColorTween inactiveTrackColorTween = ColorTween(begin: sliderTheme.disabledInactiveTrackColor, end: sliderTheme.inactiveTrackColor);
final Paint activePaint = Paint()..color = activeTrackColorTween.evaluate(enableAnimation)!;
final Paint inactivePaint = Paint()..color = inactiveTrackColorTween.evaluate(enableAnimation)!;
Paint leftTrackPaint;
Paint rightTrackPaint;
final Paint leftTrackPaint;
final Paint rightTrackPaint;
switch (textDirection) {
case TextDirection.ltr:
leftTrackPaint = activePaint;
@ -1634,8 +1634,8 @@ class RoundedRectSliderTrackShape extends SliderTrackShape with BaseSliderTrackS
final ColorTween inactiveTrackColorTween = ColorTween(begin: sliderTheme.disabledInactiveTrackColor, end: sliderTheme.inactiveTrackColor);
final Paint activePaint = Paint()..color = activeTrackColorTween.evaluate(enableAnimation)!;
final Paint inactivePaint = Paint()..color = inactiveTrackColorTween.evaluate(enableAnimation)!;
Paint leftTrackPaint;
Paint rightTrackPaint;
final Paint leftTrackPaint;
final Paint rightTrackPaint;
switch (textDirection) {
case TextDirection.ltr:
leftTrackPaint = activePaint;
@ -1777,8 +1777,8 @@ class RectangularRangeSliderTrackShape extends RangeSliderTrackShape {
final Paint activePaint = Paint()..color = activeTrackColorTween.evaluate(enableAnimation!)!;
final Paint inactivePaint = Paint()..color = inactiveTrackColorTween.evaluate(enableAnimation)!;
Offset leftThumbOffset;
Offset rightThumbOffset;
final Offset leftThumbOffset;
final Offset rightThumbOffset;
switch (textDirection) {
case TextDirection.ltr:
leftThumbOffset = startThumbCenter;
@ -1917,8 +1917,8 @@ class RoundedRectRangeSliderTrackShape extends RangeSliderTrackShape {
final Paint inactivePaint = Paint()
..color = inactiveTrackColorTween.evaluate(enableAnimation)!;
Offset leftThumbOffset;
Offset rightThumbOffset;
final Offset leftThumbOffset;
final Offset rightThumbOffset;
switch (textDirection) {
case TextDirection.ltr:
leftThumbOffset = startThumbCenter;
@ -2144,7 +2144,7 @@ class RoundRangeSliderTickMarkShape extends RangeSliderTickMarkShape {
assert(isEnabled != null);
assert(textDirection != null);
bool isBetweenThumbs;
final bool isBetweenThumbs;
switch (textDirection) {
case TextDirection.ltr:
isBetweenThumbs = startThumbCenter.dx < center.dx && center.dx < endThumbCenter.dx;

2
packages/flutter/lib/src/material/snack_bar.dart
View file

@ -537,7 +537,7 @@ class _SnackBarState extends State<SnackBar> {
),
);
Widget snackBarTransition;
final Widget snackBarTransition;
if (mediaQueryData.accessibleNavigation) {
snackBarTransition = snackBar;
} else if (isFloatingSnackBar) {

5
packages/flutter/lib/src/material/stepper.dart
View file

@ -394,8 +394,7 @@ class _StepperState extends State<Stepper> with TickerProviderStateMixin {
if (widget.controlsBuilder != null)
return widget.controlsBuilder!(context, onStepContinue: widget.onStepContinue, onStepCancel: widget.onStepCancel);
Color cancelColor;
final Color cancelColor;
switch (Theme.of(context)!.brightness) {
case Brightness.light:
cancelColor = Colors.black54;
@ -405,8 +404,6 @@ class _StepperState extends State<Stepper> with TickerProviderStateMixin {
break;
}
assert(cancelColor != null);
final ThemeData themeData = Theme.of(context)!;
final ColorScheme colorScheme = themeData.colorScheme;
final MaterialLocalizations localizations = MaterialLocalizations.of(context)!;

6
packages/flutter/lib/src/material/switch.dart
View file

@ -306,8 +306,8 @@ class _SwitchState extends State<Switch> with TickerProviderStateMixin {
final Color hoverColor = widget.hoverColor ?? theme.hoverColor;
final Color focusColor = widget.focusColor ?? theme.focusColor;
Color inactiveThumbColor;
Color inactiveTrackColor;
final Color inactiveThumbColor;
final Color inactiveTrackColor;
if (enabled) {
const Color black32 = Color(0x52000000); // Black with 32% opacity
inactiveThumbColor = widget.inactiveThumbColor ?? (isDark ? Colors.grey.shade400 : Colors.grey.shade50);
@ -738,7 +738,7 @@ class _RenderSwitch extends RenderToggleable {
final bool isEnabled = onChanged != null;
final double currentValue = position.value;
double visualPosition;
final double visualPosition;
switch (textDirection) {
case TextDirection.rtl:
visualPosition = 1.0 - currentValue;

2
packages/flutter/lib/src/material/switch_list_tile.dart
View file

@ -442,7 +442,7 @@ class SwitchListTile extends StatelessWidget {
@override
Widget build(BuildContext context) {
Widget control;
final Widget control;
switch (_switchListTileType) {
case _SwitchListTileType.adaptive:
control = Switch.adaptive(

8
packages/flutter/lib/src/material/tabs.dart
View file

@ -101,8 +101,8 @@ class Tab extends StatelessWidget {
Widget build(BuildContext context) {
assert(debugCheckHasMaterial(context));
double height;
Widget label;
final double height;
final Widget label;
if (icon == null) {
height = _kTabHeight;
label = _buildLabelText();
@ -956,7 +956,7 @@ class _TabBarState extends State<TabBar> {
final double index = _controller!.index.toDouble();
final double value = _controller!.animation!.value;
double offset;
final double offset;
if (value == index - 1.0)
offset = leadingPosition ?? middlePosition;
else if (value == index + 1.0)
@ -1462,7 +1462,7 @@ class TabPageSelector extends StatelessWidget {
ColorTween selectedColorTween,
ColorTween previousColorTween,
) {
Color background;
final Color background;
if (tabController.indexIsChanging) {
// The selection's animation is animating from previousValue to value.
final double t = 1.0 - _indexChangeProgress(tabController);

8
packages/flutter/lib/src/material/text_field.dart
View file

@ -1092,12 +1092,12 @@ class _TextFieldState extends State<TextField> with RestorationMixin implements
if (widget.maxLength != null && widget.maxLengthEnforced)
formatters.add(LengthLimitingTextInputFormatter(widget.maxLength));
TextSelectionControls textSelectionControls;
bool paintCursorAboveText;
bool cursorOpacityAnimates;
final TextSelectionControls textSelectionControls;
final bool paintCursorAboveText;
final bool cursorOpacityAnimates;
Offset? cursorOffset;
Color? cursorColor = widget.cursorColor;
Color selectionColor;
final Color selectionColor;
Color? autocorrectionTextRectColor;
Radius? cursorRadius = widget.cursorRadius;

16
packages/flutter/lib/src/material/time_picker.dart
View file

@ -148,9 +148,9 @@ class _TimePickerHeader extends StatelessWidget {
use24HourDials: use24HourDials,
);
EdgeInsets padding;
final EdgeInsets padding;
double? width;
Widget controls;
final Widget controls;
switch (orientation) {
case Orientation.portrait:
@ -603,7 +603,7 @@ class _DayPeriodControl extends StatelessWidget {
),
);
Widget result;
final Widget result;
switch (orientation) {
case Orientation.portrait:
const double width = 52.0;
@ -1090,7 +1090,7 @@ class _DialState extends State<_Dial> with SingleTickerProviderStateMixin {
void _selectHour(int hour) {
_announceToAccessibility(context, localizations.formatDecimal(hour));
TimeOfDay time;
final TimeOfDay time;
if (widget.mode == _TimePickerMode.hour && widget.use24HourDials) {
time = TimeOfDay(hour: hour, minute: widget.selectedTime.minute);
} else {
@ -1230,7 +1230,7 @@ class _DialState extends State<_Dial> with SingleTickerProviderStateMixin {
final Color secondaryLabelColor = MaterialStateProperty.resolveAs(pickerTheme.dialTextColor, <MaterialState>{MaterialState.selected}) ?? themeData.colorScheme.onPrimary;
List<_TappableLabel> primaryLabels;
List<_TappableLabel> secondaryLabels;
int selectedDialValue;
final int selectedDialValue;
switch (widget.mode) {
case _TimePickerMode.hour:
if (widget.use24HourDials) {
@ -1910,8 +1910,8 @@ class _TimePickerDialogState extends State<_TimePickerDialog> {
// to 1.1 as that provides enough space to reasonably fit all the content.
final double textScaleFactor = math.min(MediaQuery.of(context)!.textScaleFactor, 1.1);
double timePickerWidth;
double timePickerHeight;
final double timePickerWidth;
final double timePickerHeight;
switch (_entryMode) {
case TimePickerEntryMode.dial:
switch (orientation) {
@ -1984,7 +1984,7 @@ class _TimePickerDialogState extends State<_TimePickerDialog> {
],
);
Widget picker;
final Widget picker;
switch (_entryMode) {
case TimePickerEntryMode.dial:
final Widget dial = Padding(

8
packages/flutter/lib/src/material/toggle_buttons.dart
View file

@ -767,8 +767,8 @@ class _ToggleButton extends StatelessWidget {
@override
Widget build(BuildContext context) {
assert(debugCheckHasMaterial(context));
Color currentColor;
Color currentFillColor;
final Color currentColor;
final Color currentFillColor;
Color? currentFocusColor;
Color? currentHoverColor;
Color? currentSplashColor;
@ -1053,8 +1053,8 @@ class _SelectToggleButtonRenderObject extends RenderShiftedBox {
}
final double trailingBorderOffset = isLastButton ? trailingBorderSide.width : 0.0;
double leftConstraint;
double rightConstraint;
final double leftConstraint;
final double rightConstraint;
switch (textDirection) {
case TextDirection.ltr:

4
packages/flutter/lib/src/material/tooltip.dart
View file

@ -370,8 +370,8 @@ class _TooltipState extends State<Tooltip> with SingleTickerProviderStateMixin {
assert(Overlay.of(context, debugRequiredFor: widget) != null);
final ThemeData theme = Theme.of(context)!;
final TooltipThemeData tooltipTheme = TooltipTheme.of(context);
TextStyle defaultTextStyle;
BoxDecoration defaultDecoration;
final TextStyle defaultTextStyle;
final BoxDecoration defaultDecoration;
if (theme.brightness == Brightness.dark) {
defaultTextStyle = theme.textTheme.bodyText2!.copyWith(
color: Colors.black,

4
packages/flutter/lib/src/painting/flutter_logo.dart
View file

@ -330,7 +330,7 @@ class _FlutterLogoPainter extends BoxPainter {
final Size canvasSize = _config.margin.deflateSize(configuration.size!);
if (canvasSize.isEmpty)
return;
Size logoSize;
final Size logoSize;
if (_config._position > 0.0) {
// horizontal style
logoSize = const Size(820.0, 232.0);
@ -352,7 +352,7 @@ class _FlutterLogoPainter extends BoxPainter {
centerSquareHeight,
);
Rect logoTargetSquare;
final Rect logoTargetSquare;
if (_config._position > 0.0) {
// horizontal style
logoTargetSquare = Rect.fromLTWH(rect.left, rect.top, rect.height, rect.height);

2
packages/flutter/lib/src/painting/shape_decoration.dart
View file

@ -91,7 +91,7 @@ class ShapeDecoration extends Decoration {
/// [RoundedRectangleBorder]; the [BoxDecoration] class cannot animate the
/// transition from a [BoxShape.circle] to [BoxShape.rectangle]).
factory ShapeDecoration.fromBoxDecoration(BoxDecoration source) {
ShapeBorder shape;
final ShapeBorder shape;
assert(source.shape != null);
switch (source.shape) {
case BoxShape.circle:

2
packages/flutter/lib/src/rendering/box.dart
View file

@ -2021,7 +2021,7 @@ abstract class RenderBox extends RenderObject {
assert(constraints != null);
assert(() {
if (!hasSize) {
DiagnosticsNode contract;
final DiagnosticsNode contract;
if (sizedByParent)
contract = ErrorDescription('Because this RenderBox has sizedByParent set to true, it must set its size in performResize().');
else

2
packages/flutter/lib/src/rendering/debug_overflow_indicator.dart
View file

@ -120,7 +120,7 @@ mixin DebugOverflowIndicatorMixin on RenderObject {
String _formatPixels(double value) {
assert(value > 0.0);
String pixels;
final String pixels;
if (value > 10.0) {
pixels = value.toStringAsFixed(0);
} else if (value > 1.0) {

15
packages/flutter/lib/src/rendering/flex.dart
View file

@ -746,7 +746,7 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
totalFlex += flex;
lastFlexChild = child;
} else {
BoxConstraints innerConstraints;
final BoxConstraints innerConstraints;
if (crossAxisAlignment == CrossAxisAlignment.stretch) {
switch (_direction) {
case Axis.horizontal:
@ -798,7 +798,7 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
break;
}
assert(minChildExtent != null);
BoxConstraints innerConstraints;
final BoxConstraints innerConstraints;
if (crossAxisAlignment == CrossAxisAlignment.stretch) {
switch (_direction) {
case Axis.horizontal:
@ -862,7 +862,7 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
// Align items along the main axis.
final double idealSize = canFlex && mainAxisSize == MainAxisSize.max ? maxMainSize : allocatedSize;
double actualSize;
final double actualSize;
switch (_direction) {
case Axis.horizontal:
size = constraints.constrain(Size(idealSize, crossSize));
@ -917,7 +917,7 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
child = firstChild;
while (child != null) {
final FlexParentData childParentData = child.parentData! as FlexParentData;
double childCrossPosition;
final double childCrossPosition;
switch (_crossAxisAlignment) {
case CrossAxisAlignment.start:
case CrossAxisAlignment.end:
@ -933,12 +933,15 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
childCrossPosition = 0.0;
break;
case CrossAxisAlignment.baseline:
childCrossPosition = 0.0;
if (_direction == Axis.horizontal) {
assert(textBaseline != null);
final double? distance = child.getDistanceToBaseline(textBaseline!, onlyReal: true);
if (distance != null)
childCrossPosition = maxBaselineDistance - distance;
else
childCrossPosition = 0.0;
} else {
childCrossPosition = 0.0;
}
break;
}
@ -1015,7 +1018,7 @@ class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, Fl
// Simulate a child rect that overflows by the right amount. This child
// rect is never used for drawing, just for determining the overflow
// location and amount.
Rect overflowChildRect;
final Rect overflowChildRect;
switch (_direction) {
case Axis.horizontal:
overflowChildRect = Rect.fromLTWH(0.0, 0.0, size.width + _overflow!, 0.0);

4
packages/flutter/lib/src/rendering/proxy_box.dart
View file

@ -274,7 +274,7 @@ class RenderConstrainedBox extends RenderProxyBox {
void debugPaintSize(PaintingContext context, Offset offset) {
super.debugPaintSize(context, offset);
assert(() {
Paint paint;
final Paint paint;
if (child == null || child!.size.isEmpty) {
paint = Paint()
..color = const Color(0x90909090);
@ -3032,7 +3032,7 @@ class RenderRepaintBoundary extends RenderProxyBox {
properties.add(MessageProperty('usefulness ratio', 'no metrics collected yet (never painted)'));
} else {
final double fraction = debugAsymmetricPaintCount / (debugSymmetricPaintCount + debugAsymmetricPaintCount);
String diagnosis;
final String diagnosis;
if (debugSymmetricPaintCount + debugAsymmetricPaintCount < 5) {
diagnosis = 'insufficient data to draw conclusion (less than five repaints)';
} else if (fraction > 0.9) {

14
packages/flutter/lib/src/rendering/shifted_box.dart
View file

@ -406,9 +406,9 @@ class RenderPositionedBox extends RenderAligningShiftedBox {
void debugPaintSize(PaintingContext context, Offset offset) {
super.debugPaintSize(context, offset);
assert(() {
Paint paint;
final Paint paint;
if (child != null && !child!.size.isEmpty) {
Path path;
final Path path;
paint = Paint()
..style = PaintingStyle.stroke
..strokeWidth = 1.0
@ -673,7 +673,7 @@ class RenderUnconstrainedBox extends RenderAligningShiftedBox with DebugOverflow
if (child != null) {
// Let the child lay itself out at it's "natural" size, but if
// constrainedAxis is non-null, keep any constraints on that axis.
BoxConstraints childConstraints;
final BoxConstraints childConstraints;
if (constrainedAxis != null) {
switch (constrainedAxis!) {
case Axis.horizontal:
@ -911,7 +911,7 @@ class RenderFractionallySizedOverflowBox extends RenderAligningShiftedBox {
@override
double computeMinIntrinsicWidth(double height) {
double result;
final double result;
if (child == null) {
result = super.computeMinIntrinsicWidth(height);
} else { // the following line relies on double.infinity absorption
@ -923,7 +923,7 @@ class RenderFractionallySizedOverflowBox extends RenderAligningShiftedBox {
@override
double computeMaxIntrinsicWidth(double height) {
double result;
final double result;
if (child == null) {
result = super.computeMaxIntrinsicWidth(height);
} else { // the following line relies on double.infinity absorption
@ -935,7 +935,7 @@ class RenderFractionallySizedOverflowBox extends RenderAligningShiftedBox {
@override
double computeMinIntrinsicHeight(double width) {
double result;
final double result;
if (child == null) {
result = super.computeMinIntrinsicHeight(width);
} else { // the following line relies on double.infinity absorption
@ -947,7 +947,7 @@ class RenderFractionallySizedOverflowBox extends RenderAligningShiftedBox {
@override
double computeMaxIntrinsicHeight(double width) {
double result;
final double result;
if (child == null) {
result = super.computeMaxIntrinsicHeight(width);
} else { // the following line relies on double.infinity absorption

4
packages/flutter/lib/src/rendering/sliver.dart
View file

@ -1488,7 +1488,7 @@ abstract class RenderSliver extends RenderObject {
return true;
assert(p0.dx == p1.dx || p0.dy == p1.dy); // must be axis-aligned
final double d = (p1 - p0).distance * 0.2;
Offset temp;
final Offset temp;
double dx1, dx2, dy1, dy2;
switch (direction) {
case GrowthDirection.forward:
@ -1810,7 +1810,7 @@ class RenderSliverToBoxAdapter extends RenderSliverSingleBoxAdapter {
}
final SliverConstraints constraints = this.constraints;
child!.layout(constraints.asBoxConstraints(), parentUsesSize: true);
double childExtent;
final double childExtent;
switch (constraints.axis) {
case Axis.horizontal:
childExtent = child!.size.width;

4
packages/flutter/lib/src/rendering/sliver_fill.dart
View file

@ -142,7 +142,7 @@ class RenderSliverFillRemaining extends RenderSliverSingleBoxAdapter {
double extent = constraints.viewportMainAxisExtent - constraints.precedingScrollExtent;
if (child != null) {
double childExtent;
final double childExtent;
switch (constraints.axis) {
case Axis.horizontal:
childExtent = child!.getMaxIntrinsicWidth(constraints.crossAxisExtent);
@ -218,7 +218,7 @@ class RenderSliverFillRemainingAndOverscroll extends RenderSliverSingleBoxAdapte
double maxExtent = constraints.remainingPaintExtent - math.min(constraints.overlap, 0.0);
if (child != null) {
double childExtent;
final double childExtent;
switch (constraints.axis) {
case Axis.horizontal:
childExtent = child!.getMaxIntrinsicWidth(constraints.crossAxisExtent);

2
packages/flutter/lib/src/rendering/sliver_fixed_extent_list.dart
View file

@ -196,7 +196,7 @@ abstract class RenderSliverFixedExtentBoxAdaptor extends RenderSliverMultiBoxAda
if (firstChild == null) {
if (!addInitialChild(index: firstIndex, layoutOffset: indexToLayoutOffset(itemExtent, firstIndex))) {
// There are either no children, or we are past the end of all our children.
double max;
final double max;
if (firstIndex <= 0) {
max = 0.0;
} else {

2
packages/flutter/lib/src/rendering/sliver_list.dart
View file

@ -300,7 +300,7 @@ class RenderSliverList extends RenderSliverMultiBoxAdaptor {
collectGarbage(leadingGarbage, trailingGarbage);
assert(debugAssertChildListIsNonEmptyAndContiguous());
double estimatedMaxScrollOffset;
final double estimatedMaxScrollOffset;
if (reachedEnd) {
estimatedMaxScrollOffset = endScrollOffset;
} else {

4
packages/flutter/lib/src/rendering/sliver_multi_box_adaptor.dart
View file

@ -595,8 +595,8 @@ abstract class RenderSliverMultiBoxAdaptor extends RenderSliver
return;
// offset is to the top-left corner, regardless of our axis direction.
// originOffset gives us the delta from the real origin to the origin in the axis direction.
Offset mainAxisUnit, crossAxisUnit, originOffset;
bool addExtent;
final Offset mainAxisUnit, crossAxisUnit, originOffset;
final bool addExtent;
switch (applyGrowthDirectionToAxisDirection(constraints.axisDirection, constraints.growthDirection)) {
case AxisDirection.up:
mainAxisUnit = const Offset(0.0, -1.0);

3
packages/flutter/lib/src/rendering/sliver_padding.dart
View file

@ -284,10 +284,9 @@ abstract class RenderSliverEdgeInsetsPadding extends RenderSliver with RenderObj
if (debugPaintSizeEnabled) {
final Size parentSize = getAbsoluteSize();
final Rect outerRect = offset & parentSize;
Size childSize;
Rect? innerRect;
if (child != null) {
childSize = child!.getAbsoluteSize();
final Size childSize = child!.getAbsoluteSize();
final SliverPhysicalParentData childParentData = child!.parentData! as SliverPhysicalParentData;
innerRect = (offset + childParentData.paintOffset) & childSize;
assert(innerRect.top >= outerRect.top);

2
packages/flutter/lib/src/rendering/stack.dart
View file

@ -540,7 +540,7 @@ class RenderStack extends RenderBox
double width = constraints.minWidth;
double height = constraints.minHeight;
BoxConstraints nonPositionedConstraints;
final BoxConstraints nonPositionedConstraints;
assert(fit != null);
switch (fit) {
case StackFit.loose:

4
packages/flutter/lib/src/rendering/table.dart
View file

@ -870,7 +870,7 @@ class RenderTable extends RenderBox {
if (totalFlex > 0.0) {
// this can only grow the table, but it _will_ grow the table at
// least as big as the target width.
double targetWidth;
final double targetWidth;
if (maxWidthConstraint.isFinite) {
targetWidth = maxWidthConstraint;
} else {
@ -1011,7 +1011,7 @@ class RenderTable extends RenderBox {
}
final List<double> widths = _computeColumnWidths(constraints);
final List<double> positions = List<double>.filled(columns, 0.0, growable: false);
double tableWidth;
final double tableWidth;
switch (textDirection) {
case TextDirection.rtl:
positions[columns - 1] = 0.0;

22
packages/flutter/lib/src/rendering/viewport.dart
View file

@ -658,7 +658,7 @@ abstract class RenderViewportBase<ParentDataClass extends ContainerParentDataMix
final Canvas canvas = context.canvas;
RenderSliver? child = firstChild;
while (child != null) {
Size size;
final Size size;
switch (axis) {
case Axis.vertical:
size = Size(child.constraints.crossAxisExtent, child.geometry!.layoutExtent);
@ -756,10 +756,10 @@ abstract class RenderViewportBase<ParentDataClass extends ContainerParentDataMix
}
// `rect` in the new intermediate coordinate system.
Rect rectLocal;
final Rect rectLocal;
// Our new reference frame render object's main axis extent.
double pivotExtent;
GrowthDirection growthDirection;
final double pivotExtent;
final GrowthDirection growthDirection;
// `leadingScrollOffset` is currently the scrollOffset of our new reference
// frame (`pivot` or `target`), within `child`.
@ -820,7 +820,7 @@ abstract class RenderViewportBase<ParentDataClass extends ContainerParentDataMix
assert(child is RenderSliver);
final RenderSliver sliver = child as RenderSliver;
double targetMainAxisExtent;
final double targetMainAxisExtent;
// The scroll offset of `rect` within `child`.
switch (applyGrowthDirectionToAxisDirection(axisDirection, growthDirection)) {
case AxisDirection.up:
@ -882,7 +882,7 @@ abstract class RenderViewportBase<ParentDataClass extends ContainerParentDataMix
break;
}
double mainAxisExtent;
final double mainAxisExtent;
switch (axis) {
case Axis.horizontal:
mainAxisExtent = size.width - extentOfPinnedSlivers;
@ -1173,7 +1173,7 @@ abstract class RenderViewportBase<ParentDataClass extends ContainerParentDataMix
// to `trailingEdgeOffset`, the one on the right by setting it to
// `leadingEdgeOffset`.
RevealedOffset targetOffset;
final RevealedOffset targetOffset;
if (leadingEdgeOffset.offset < trailingEdgeOffset.offset) {
// `descendant` is too big to be visible on screen in its entirety. Let's
// align it with the edge that requires the least amount of scrolling.
@ -1453,8 +1453,8 @@ class RenderViewport extends RenderViewportBase<SliverPhysicalContainerParentDat
}
assert(center!.parent == this);
double mainAxisExtent;
double crossAxisExtent;
final double mainAxisExtent;
final double crossAxisExtent;
switch (axis) {
case Axis.vertical:
mainAxisExtent = size.height;
@ -1845,8 +1845,8 @@ class RenderShrinkWrappingViewport extends RenderViewportBase<SliverLogicalConta
return;
}
double mainAxisExtent;
double crossAxisExtent;
final double mainAxisExtent;
final double crossAxisExtent;
switch (axis) {
case Axis.vertical:
assert(constraints.hasBoundedWidth);

2
packages/flutter/lib/src/rendering/wrap.dart
View file

@ -580,7 +580,7 @@ class RenderWrap extends RenderBox
size = constraints.smallest;
return;
}
BoxConstraints childConstraints;
final BoxConstraints childConstraints;
double mainAxisLimit = 0.0;
bool flipMainAxis = false;
bool flipCrossAxis = false;

4
packages/flutter/lib/src/semantics/semantics.dart
View file

@ -2029,8 +2029,8 @@ class SemanticsNode extends AbstractNode with DiagnosticableTreeMixin {
void _addToUpdate(ui.SemanticsUpdateBuilder builder, Set<int> customSemanticsActionIdsUpdate) {
assert(_dirty);
final SemanticsData data = getSemanticsData();
Int32List childrenInTraversalOrder;
Int32List childrenInHitTestOrder;
final Int32List childrenInTraversalOrder;
final Int32List childrenInHitTestOrder;
if (!hasChildren || mergeAllDescendantsIntoThisNode) {
childrenInTraversalOrder = _kEmptyChildList;
childrenInHitTestOrder = _kEmptyChildList;

2
packages/flutter/lib/src/services/platform_views.dart
View file

@ -567,7 +567,7 @@ class _AndroidMotionEventConverter {
return null;
}
int action;
final int action;
if (event is PointerDownEvent) {
action = numPointers == 1
? AndroidViewController.kActionDown

2
packages/flutter/lib/src/services/raw_keyboard.dart
View file

@ -264,7 +264,7 @@ abstract class RawKeyEvent with Diagnosticable {
/// Creates a concrete [RawKeyEvent] class from a message in the form received
/// on the [SystemChannels.keyEvent] channel.
factory RawKeyEvent.fromMessage(Map<String, dynamic> message) {
RawKeyEventData data;
final RawKeyEventData data;
String? character;
final String keymap = message['keymap'] as String;

2
packages/flutter/lib/src/services/raw_keyboard_macos.dart
View file

@ -151,7 +151,7 @@ class RawKeyEventDataMacOs extends RawKeyEventData {
@override
bool isModifierPressed(ModifierKey key, {KeyboardSide side = KeyboardSide.any}) {
final int independentModifier = modifiers & deviceIndependentMask;
bool result;
final bool result;
switch (key) {
case ModifierKey.controlModifier:
result = _isLeftRightModifierPressed(side, independentModifier & modifierControl, modifierLeftControl, modifierRightControl);

2
packages/flutter/lib/src/services/raw_keyboard_windows.dart
View file

@ -122,7 +122,7 @@ class RawKeyEventDataWindows extends RawKeyEventData {
@override
bool isModifierPressed(ModifierKey key, {KeyboardSide side = KeyboardSide.any}) {
bool result;
final bool result;
switch (key) {
case ModifierKey.controlModifier:
result = _isLeftRightModifierPressed(side, modifierControl, modifierLeftControl, modifierRightControl);

8
packages/flutter/lib/src/widgets/animated_cross_fade.dart
View file

@ -316,12 +316,12 @@ class _AnimatedCrossFadeState extends State<AnimatedCrossFade> with TickerProvid
const Key kSecondChildKey = ValueKey<CrossFadeState>(CrossFadeState.showSecond);
final bool transitioningForwards = _controller!.status == AnimationStatus.completed ||
_controller!.status == AnimationStatus.forward;
Key topKey;
final Key topKey;
Widget topChild;
Animation<double> topAnimation;
Key bottomKey;
final Animation<double> topAnimation;
final Key bottomKey;
Widget bottomChild;
Animation<double> bottomAnimation;
final Animation<double> bottomAnimation;
if (transitioningForwards) {
topKey = kSecondChildKey;
topChild = widget.secondChild;

2
packages/flutter/lib/src/widgets/app.dart
View file

@ -1586,7 +1586,7 @@ class _WidgetsAppState extends State<WidgetsApp> with WidgetsBindingObserver {
return true;
}());
Widget title;
final Widget title;
if (widget.onGenerateTitle != null) {
title = Builder(
// This Builder exists to provide a context below the Localizations widget.

4
packages/flutter/lib/src/widgets/basic.dart
View file

@ -2171,7 +2171,7 @@ class SizedBox extends SingleChildRenderObjectWidget {
@override
String toStringShort() {
String type;
final String type;
if (width == double.infinity && height == double.infinity) {
type = '${objectRuntimeType(this, 'SizedBox')}.expand';
} else if (width == 0.0 && height == 0.0) {
@ -2185,7 +2185,7 @@ class SizedBox extends SingleChildRenderObjectWidget {
@override
void debugFillProperties(DiagnosticPropertiesBuilder properties) {
super.debugFillProperties(properties);
DiagnosticLevel level;
final DiagnosticLevel level;
if ((width == double.infinity && height == double.infinity) ||
(width == 0.0 && height == 0.0)) {
level = DiagnosticLevel.hidden;

2
packages/flutter/lib/src/widgets/container.dart
View file

@ -95,7 +95,7 @@ class DecoratedBox extends SingleChildRenderObjectWidget {
@override
void debugFillProperties(DiagnosticPropertiesBuilder properties) {
super.debugFillProperties(properties);
String label;
final String label;
switch (position) {
case DecorationPosition.background:
label = 'bg';

2
packages/flutter/lib/src/widgets/drag_target.dart
View file

@ -385,7 +385,7 @@ class _DraggableState<T extends Object> extends State<Draggable<T>> {
_DragAvatar<T>? _startDrag(Offset position) {
if (widget.maxSimultaneousDrags != null && _activeCount >= widget.maxSimultaneousDrags!)
return null;
Offset dragStartPoint;
final Offset dragStartPoint;
switch (widget.dragAnchor) {
case DragAnchor.child:
final RenderBox renderObject = context.findRenderObject()! as RenderBox;

4
packages/flutter/lib/src/widgets/editable_text.dart
View file

@ -1910,8 +1910,8 @@ class EditableTextState extends State<EditableText> with AutomaticKeepAliveClien
return RevealedOffset(offset: _scrollController!.offset, rect: rect);
final Size editableSize = renderEditable.size;
double additionalOffset;
Offset unitOffset;
final double additionalOffset;
final Offset unitOffset;
if (!_isMultiline) {
additionalOffset = rect.width >= editableSize.width

4
packages/flutter/lib/src/widgets/focus_manager.dart
View file

@ -1503,7 +1503,7 @@ class FocusManager with DiagnosticableTreeMixin, ChangeNotifier {
// Update function to be called whenever the state relating to highlightMode
// changes.
void _updateHighlightMode() {
FocusHighlightMode newMode;
final FocusHighlightMode newMode;
switch (highlightStrategy) {
case FocusHighlightStrategy.automatic:
if (_lastInteractionWasTouch == null) {
@ -1587,7 +1587,7 @@ class FocusManager with DiagnosticableTreeMixin, ChangeNotifier {
final FocusScopeNode rootScope = FocusScopeNode(debugLabel: 'Root Focus Scope');
void _handlePointerEvent(PointerEvent event) {
FocusHighlightMode expectedMode;
final FocusHighlightMode expectedMode;
switch (event.kind) {
case PointerDeviceKind.touch:
case PointerDeviceKind.stylus:

2
packages/flutter/lib/src/widgets/focus_traversal.dart
View file

@ -595,7 +595,7 @@ mixin DirectionalFocusTraversalPolicyMixin on FocusTraversalPolicy {
invalidateScopeData(nearestScope);
return false;
}
ScrollPositionAlignmentPolicy alignmentPolicy;
final ScrollPositionAlignmentPolicy alignmentPolicy;
switch (direction) {
case TraversalDirection.up:
case TraversalDirection.left:

4
packages/flutter/lib/src/widgets/framework.dart
View file

@ -226,7 +226,7 @@ abstract class GlobalKey<T extends State<StatefulWidget>> extends Key {
// We have duplication reservations for the same global key.
final Element older = keyToParent[key]!;
final Element newer = parent;
FlutterError error;
final FlutterError error;
if (older.toString() != newer.toString()) {
error = FlutterError.fromParts(<DiagnosticsNode>[
ErrorSummary('Multiple widgets used the same GlobalKey.'),
@ -3333,7 +3333,7 @@ abstract class Element extends DiagnosticableTree implements BuildContext {
deactivateChild(child);
return null;
}
Element newChild;
final Element newChild;
if (child != null) {
bool hasSameSuperclass = true;
// When the type of a widget is changed between Stateful and Stateless via

2
packages/flutter/lib/src/widgets/modal_barrier.dart
View file

@ -77,7 +77,7 @@ class ModalBarrier extends StatelessWidget {
@override
Widget build(BuildContext context) {
assert(!dismissible || semanticsLabel == null || debugCheckHasDirectionality(context));
bool platformSupportsDismissingBarrier;
final bool platformSupportsDismissingBarrier;
switch (defaultTargetPlatform) {
case TargetPlatform.android:
case TargetPlatform.fuchsia:

6
packages/flutter/lib/src/widgets/navigation_toolbar.dart
View file

@ -115,7 +115,7 @@ class _ToolbarLayout extends MultiChildLayoutDelegate {
maxHeight: size.height,
);
leadingWidth = layoutChild(_ToolbarSlot.leading, constraints).width;
double leadingX;
final double leadingX;
switch (textDirection) {
case TextDirection.rtl:
leadingX = size.width - leadingWidth;
@ -130,7 +130,7 @@ class _ToolbarLayout extends MultiChildLayoutDelegate {
if (hasChild(_ToolbarSlot.trailing)) {
final BoxConstraints constraints = BoxConstraints.loose(size);
final Size trailingSize = layoutChild(_ToolbarSlot.trailing, constraints);
double trailingX;
final double trailingX;
switch (textDirection) {
case TextDirection.rtl:
trailingX = 0.0;
@ -162,7 +162,7 @@ class _ToolbarLayout extends MultiChildLayoutDelegate {
middleStart = middleStartMargin;
}
double middleX;
final double middleX;
switch (textDirection) {
case TextDirection.rtl:
middleX = size.width - middleSize.width - middleStart;

2
packages/flutter/lib/src/widgets/navigator.dart
View file

@ -4358,7 +4358,7 @@ class NavigatorState extends State<Navigator> with TickerProviderStateMixin, Res
if (route != null) {
routeJsonable = <String, dynamic>{};
String description;
final String description;
if (route is TransitionRoute<dynamic>) {
final TransitionRoute<dynamic> transitionRoute = route;
description = transitionRoute.debugLabel;

2
packages/flutter/lib/src/widgets/overscroll_indicator.dart
View file

@ -200,7 +200,7 @@ class GlowingOverscrollIndicator extends StatefulWidget {
void debugFillProperties(DiagnosticPropertiesBuilder properties) {
super.debugFillProperties(properties);
properties.add(EnumProperty<AxisDirection>('axisDirection', axisDirection));
String showDescription;
final String showDescription;
if (showLeading && showTrailing) {
showDescription = 'both sides';
} else if (showLeading) {

4
packages/flutter/lib/src/widgets/scroll_position.dart
View file

@ -610,8 +610,8 @@ abstract class ScrollPosition extends ViewportOffset with ScrollMetrics {
/// scroll view dimensions both change) and therefore shouldn't do anything
/// expensive.
void _updateSemanticActions() {
SemanticsAction forward;
SemanticsAction backward;
final SemanticsAction forward;
final SemanticsAction backward;
switch (axisDirection) {
case AxisDirection.up:
forward = SemanticsAction.scrollDown;

2
packages/flutter/lib/src/widgets/scroll_simulation.dart
View file

@ -103,7 +103,7 @@ class BouncingScrollSimulation extends Simulation {
}
Simulation _simulation(double time) {
Simulation simulation;
final Simulation simulation;
if (time > _springTime) {
_timeOffset = _springTime.isFinite ? _springTime : 0.0;
simulation = _springSimulation;

2
packages/flutter/lib/src/widgets/scroll_view.dart
View file

@ -1247,7 +1247,7 @@ class ListView extends BoxScrollView {
childrenDelegate = SliverChildBuilderDelegate(
(BuildContext context, int index) {
final int itemIndex = index ~/ 2;
Widget widget;
final Widget widget;
if (index.isEven) {
widget = itemBuilder(context, itemIndex);
} else {

4
packages/flutter/lib/src/widgets/scrollbar.dart
View file

@ -198,8 +198,8 @@ class ScrollbarPainter extends ChangeNotifier implements CustomPainter {
}
void _paintThumbCrossAxis(Canvas canvas, Size size, double thumbOffset, double thumbExtent, AxisDirection direction) {
double x, y;
Size thumbSize;
final double x, y;
final Size thumbSize;
switch (direction) {
case AxisDirection.down:

4
packages/flutter/lib/src/widgets/semantics_debugger.dart
View file

@ -281,11 +281,11 @@ class _SemanticsDebuggerPainter extends CustomPainter {
annotations.add('adjustable');
assert(data.label != null);
String message;
final String message;
if (data.label.isEmpty) {
message = annotations.join('; ');
} else {
String label;
final String label;
if (data.textDirection == null) {
label = '${Unicode.FSI}${data.label}${Unicode.PDI}';
annotations.insert(0, 'MISSING TEXT DIRECTION');

6
packages/flutter/lib/src/widgets/single_child_scroll_view.dart
View file

@ -633,9 +633,9 @@ class _RenderSingleChildViewport extends RenderBox with RenderObjectWithChildMix
final Rect bounds = MatrixUtils.transformRect(transform, rect);
final Size contentSize = child!.size;
double leadingScrollOffset;
double targetMainAxisExtent;
double mainAxisExtent;
final double leadingScrollOffset;
final double targetMainAxisExtent;
final double mainAxisExtent;
assert(axisDirection != null);
switch (axisDirection) {

6
packages/flutter/lib/src/widgets/sliver.dart
View file

@ -433,7 +433,7 @@ class SliverChildBuilderDelegate extends SliverChildDelegate {
if (findChildIndexCallback == null)
return null;
assert(key != null);
Key childKey;
final Key childKey;
if (key is _SaltedValueKey) {
final _SaltedValueKey saltedValueKey = key;
childKey = saltedValueKey.value;
@ -665,7 +665,7 @@ class SliverChildListDelegate extends SliverChildDelegate {
@override
int? findIndexByKey(Key key) {
assert(key != null);
Key childKey;
final Key childKey;
if (key is _SaltedValueKey) {
final _SaltedValueKey saltedValueKey = key;
childKey = saltedValueKey.value;
@ -1366,7 +1366,7 @@ class SliverMultiBoxAdaptorElement extends RenderObjectElement implements Render
void debugVisitOnstageChildren(ElementVisitor visitor) {
_childElements.values.cast<Element>().where((Element child) {
final SliverMultiBoxAdaptorParentData parentData = child.renderObject!.parentData! as SliverMultiBoxAdaptorParentData;
double itemExtent;
final double itemExtent;
switch (renderObject.constraints.axis) {
case Axis.horizontal:
itemExtent = child.renderObject!.paintBounds.width;

8
packages/flutter/lib/src/widgets/text_selection.dart
View file

@ -587,7 +587,7 @@ class TextSelectionOverlay {
}
void _handleSelectionHandleChanged(TextSelection newSelection, _TextSelectionHandlePosition position) {
TextPosition textPosition;
final TextPosition textPosition;
switch (position) {
case _TextSelectionHandlePosition.start:
textPosition = newSelection.base;
@ -695,7 +695,7 @@ class _TextSelectionHandleOverlayState
return;
}
TextSelection newSelection;
final TextSelection newSelection;
switch (widget.position) {
case _TextSelectionHandlePosition.start:
newSelection = TextSelection(
@ -724,8 +724,8 @@ class _TextSelectionHandleOverlayState
@override
Widget build(BuildContext context) {
LayerLink layerLink;
TextSelectionHandleType type;
final LayerLink layerLink;
final TextSelectionHandleType type;
switch (widget.position) {
case _TextSelectionHandlePosition.start:

2
packages/flutter/lib/src/widgets/transitions.dart
View file

@ -632,7 +632,7 @@ class SizeTransition extends AnimatedWidget {
@override
Widget build(BuildContext context) {
AlignmentDirectional alignment;
final AlignmentDirectional alignment;
if (axis == Axis.vertical)
alignment = AlignmentDirectional(-1.0, axisAlignment);
else

8
packages/flutter/test/cupertino/text_field_test.dart
View file

@ -3222,8 +3222,8 @@ void main() {
EditableText.debugDeterministicCursor = true;
tester.binding.window.physicalSizeTestValue = const Size(400, 400);
tester.binding.window.devicePixelRatioTestValue = 1;
TextEditingController controller;
EditableTextState state;
final TextEditingController controller;
final EditableTextState state;
// Normal multiword collapsed selection. The toolbar arrow should point down, and
// it should point exactly to the caret.
@ -3293,8 +3293,8 @@ void main() {
EditableText.debugDeterministicCursor = true;
tester.binding.window.physicalSizeTestValue = const Size(400, 400);
tester.binding.window.devicePixelRatioTestValue = 1;
TextEditingController controller;
EditableTextState state;
final TextEditingController controller;
final EditableTextState state;
// Normal multiline collapsed selection. The toolbar arrow should point down, and
// it should point exactly to the horizontal center of the text field.

12
packages/flutter/test/foundation/assertions_test.dart
View file

@ -219,7 +219,7 @@ void main() {
test('Malformed FlutterError objects', () {
{
AssertionError error;
final AssertionError error;
try {
throw FlutterError.fromParts(<DiagnosticsNode>[]);
} on AssertionError catch (e) {
@ -235,7 +235,7 @@ void main() {
}
{
AssertionError error;
final AssertionError error;
try {
throw FlutterError.fromParts(<DiagnosticsNode>[
(ErrorDescription('Error description without a summary'))]);
@ -261,7 +261,7 @@ void main() {
}
{
AssertionError error;
final AssertionError error;
try {
throw FlutterError.fromParts(<DiagnosticsNode>[
ErrorSummary('Error Summary A'),
@ -298,7 +298,7 @@ void main() {
}
{
AssertionError error;
final AssertionError error;
try {
throw FlutterError.fromParts(<DiagnosticsNode>[
ErrorDescription('Some description'),
@ -329,7 +329,7 @@ void main() {
test('User-thrown exceptions have ErrorSummary properties', () {
{
DiagnosticsNode node;
final DiagnosticsNode node;
try {
throw 'User thrown string';
} catch (e) {
@ -340,7 +340,7 @@ void main() {
}
{
DiagnosticsNode node;
final DiagnosticsNode node;
try {
throw ArgumentError.notNull('myArgument');
} catch (e) {