Fluent UI Files

• refactor: Consistent theme classes
• fix: CalendarDatePicker throws state error when selecting date (#1251)
• feat: Named constructors for InfoBar (#1247) dart InfoBar.info(title: Text(error)); InfoBar.warning(title: Text(error)); InfoBar.success(title: Text(error)); InfoBar.error(title: Text(error));
• refactor: Expose TooltipState
• fix: NumberBox calls onChanged() when clicked on (#1196)
• feat: Add NumberBox.parser, which allows to use a custom parse function for the number box. (#1166)
• feat: Support long pressing on NumberBox increment and decrement buttons. Added NumberBox.interval (#1267, #843, #1285)
• fix: Correctly lerp between theme properties (#953)
• fix: Correctly apply theme durations to animations (#1231)
• feat: Apply text height on Typography
• refactor: Encourage usage of EdgeInsetsDirectional instead of EdgeInsets
• BREAKING CHANGE refactor: Remove BottomNavigationBar and all its related widgets
• MINOR BREAKING refactor: Remove Brightness.isLight, Brightness.isDark and Brightness.opposite extension methods. Use switch statements instead.
• feat: Add latest color resources from Microsoft UI XAML.
• refactor(perf): Optimize animation handling in Scrollbar, NavigationView, Acrylic and buttons.
• refactor(perf): Reduce calls to setState and frames scheduling in several widgets.
• BREAKING CHANGE NavigationView reworked to be more flexible and match the Windows UI 3 specs.
• Renamed PaneDisplayMode.open to PaneDisplayMode.expanded.
• Renamed appBar to titleBar.
• Removed NavigationAppBar class. Any widget can now be a title bar.
• Introduced the TitleBar widget, which matches the design and functionality of a Window title bar.
• Added PaneBackButton widget, a button that allows the user to pop the current route.
• Added PaneToggleButton widget, a button that opens or close the navigation view pane. (#1051)
• Added NavigationPane.toggleButtonPosition, which sets the preferred position of the toggle button. (#669)
• PaneItems are now lazy-loaded, improving overall performance (#742)
• Updated StickyNavigationIndicator animation to match Win UI 3 specs (#540)
• Updated colors and margins to match Win UI 3 specs (#1181)
• PaneItemExpander now supports deep nesting (#1019)
• PaneItemExpander no longer resets itself when the tree is updated. (#876)
• PaneItemExpander doesn't require a body anymore. If no body is provided, the item will not be selectable. (#1189)
• Keyboard Navigation was enhanced. Items are visible in the scroll view when focused.
• Updated content management to only display the current visible item at once. (#1101)
• Expose NavigationView important data using NavigationView.dataOf(context)
• Added NavigationPane.acrylicDisabled, which allows disabling acrylic material effect of the pane overlays
• InfoBadge style variants (success, attention, critical), dot badges and adaptive sizing (#1277)
• NavigationView holds a local history. Use NavigationView.of(context).pop() or PaneBackButton to navigate to the previous index (#1266)
• chore: Updated Russian translations (#1253)
• Update Chinese translations (#1283)
• BREAKING CHANGE RadioButton API reworked to use RadioGroup for state management.
• Removed checked and onChanged parameters from RadioButton.
• Added required value parameter to RadioButton<T>.
• Radio buttons must now be wrapped in a RadioGroup<T>, which holds groupValue and onChanged.
• Radio buttons are no longer toggleable (selecting an already-selected button has no effect).

Before: dart RadioButton( checked: selectedIndex == 0, onChanged: (value) { if (value) setState(() => selectedIndex = 0); }, content: Text('Option 1'), )

After: dart RadioGroup<int>( groupValue: selectedIndex, onChanged: (value) { if (value != null) setState(() => selectedIndex = value); }, child: Column( children: [ RadioButton<int>(value: 0, content: Text('Option 1')), RadioButton<int>(value: 1, content: Text('Option 2')), ], ), )

• fix: Flyout barrier color (#1276)