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Related https://github.com/flutter/flutter/issues/131676 ## Description #### Fix default input text style for `DropdownMenu`  ### Fix default text style for `MenuAnchor`'s menu items (which `DropdownMenu` uses for menu items)  ### Default `DropdownMenu` Input text style  ### Default `DropdownMenu` menu item text style  ### Default `MenuAnchor` menu item text style  ### Code sample <details> <summary>expand to view the code sample</summary> ```dart import 'package:flutter/material.dart'; /// Flutter code sample for [DropdownMenu]s. The first dropdown menu has an outlined border. void main() => runApp(const DropdownMenuExample()); class DropdownMenuExample extends StatefulWidget { const DropdownMenuExample({super.key}); @override State<DropdownMenuExample> createState() => _DropdownMenuExampleState(); } class _DropdownMenuExampleState extends State<DropdownMenuExample> { final TextEditingController colorController = TextEditingController(); final TextEditingController iconController = TextEditingController(); ColorLabel? selectedColor; IconLabel? selectedIcon; @override Widget build(BuildContext context) { final List<DropdownMenuEntry<ColorLabel>> colorEntries = <DropdownMenuEntry<ColorLabel>>[]; for (final ColorLabel color in ColorLabel.values) { colorEntries.add( DropdownMenuEntry<ColorLabel>( value: color, label: color.label, enabled: color.label != 'Grey'), ); } final List<DropdownMenuEntry<IconLabel>> iconEntries = <DropdownMenuEntry<IconLabel>>[]; for (final IconLabel icon in IconLabel.values) { iconEntries .add(DropdownMenuEntry<IconLabel>(value: icon, label: icon.label)); } return MaterialApp( theme: ThemeData( useMaterial3: true, colorSchemeSeed: Colors.green, // textTheme: const TextTheme( // bodyLarge: TextStyle( // fontWeight: FontWeight.bold, // fontStyle: FontStyle.italic, // decoration: TextDecoration.underline, // ), // ), ), home: Scaffold( body: SafeArea( child: Column( children: <Widget>[ const Text('DropdownMenus'), Padding( padding: const EdgeInsets.symmetric(vertical: 20), child: Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ DropdownMenu<ColorLabel>( controller: colorController, label: const Text('Color'), dropdownMenuEntries: colorEntries, onSelected: (ColorLabel? color) { setState(() { selectedColor = color; }); }, ), const SizedBox(width: 20), DropdownMenu<IconLabel>( controller: iconController, enableFilter: true, leadingIcon: const Icon(Icons.search), label: const Text('Icon'), dropdownMenuEntries: iconEntries, inputDecorationTheme: const InputDecorationTheme( filled: true, contentPadding: EdgeInsets.symmetric(vertical: 5.0), ), onSelected: (IconLabel? icon) { setState(() { selectedIcon = icon; }); }, ), ], ), ), const Text('Plain TextFields'), Padding( padding: const EdgeInsets.symmetric(vertical: 20), child: Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ SizedBox( width: 150, child: TextField( controller: TextEditingController(text: 'Blue'), decoration: const InputDecoration( suffixIcon: Icon(Icons.arrow_drop_down), labelText: 'Color', border: OutlineInputBorder(), )), ), const SizedBox(width: 20), SizedBox( width: 150, child: TextField( controller: TextEditingController(text: 'Smile'), decoration: const InputDecoration( prefixIcon: Icon(Icons.search), suffixIcon: Icon(Icons.arrow_drop_down), filled: true, labelText: 'Icon', )), ), ], ), ), if (selectedColor != null && selectedIcon != null) Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text( 'You selected a ${selectedColor?.label} ${selectedIcon?.label}'), Padding( padding: const EdgeInsets.symmetric(horizontal: 5), child: Icon( selectedIcon?.icon, color: selectedColor?.color, ), ) ], ) else const Text('Please select a color and an icon.') ], ), ), ), ); } } enum ColorLabel { blue('Blue', Colors.blue), pink('Pink', Colors.pink), green('Green', Colors.green), yellow('Yellow', Colors.yellow), grey('Grey', Colors.grey); const ColorLabel(this.label, this.color); final String label; final Color color; } enum IconLabel { smile('Smile', Icons.sentiment_satisfied_outlined), cloud( 'Cloud', Icons.cloud_outlined, ), brush('Brush', Icons.brush_outlined), heart('Heart', Icons.favorite); const IconLabel(this.label, this.icon); final String label; final IconData icon; } ``` </details>
Token Defaults Generator
Script that generates component theme data defaults based on token data.
Usage
Run this program from the root of the git repository:
dart dev/tools/gen_defaults/bin/gen_defaults.dart [-v]
This updates generated/used_tokens.csv and the various component theme files.
Templates
There is a template file for every component that needs defaults from
the token database. These templates are implemented as subclasses of
TokenTemplate. This base class provides some utilities and a structure
for adding a new block of generated code to the bottom of a given file.
Templates need to override the generate method to provide the generated
code block as a string.
See lib/fab_template.dart for an example that generates defaults for the
Floating Action Button.
Tokens
Tokens are stored in JSON files in data/, and are sourced from
an internal Google database.
template.dart should provide nearly all useful token resolvers
(e.g. color, shape, etc.). For special cases in which one shouldn't
be defined, use getToken to get the raw token value. The script, through
the various revolvers and getToken, validates tokens, keeps track of
which tokens are used, and generates generated/used_tokens.csv.