[material_ui] Migrate AppBar M3 template to use new gen_defaults script

packages/material_ui/lib/src/app_bar.dart

@@ -34,6 +34,8 @@ import 'tabs.dart';
 import 'text_theme.dart';
 import 'theme.dart';
 
+part 'generated/app_bar_defaults_m3.g.dart';
+
 // Examples can assume:
 // late String _logoAsset;
 // double _myToolbarHeight = 250.0;
@@ -2509,112 +2511,3 @@ class _AppBarDefaultsM2 extends AppBarThemeData {
   @override
   EdgeInsets? get actionsPadding => EdgeInsets.zero;
 }
-
-// BEGIN GENERATED TOKEN PROPERTIES - AppBar
-
-// Do not edit by hand. The code between the "BEGIN GENERATED" and
-// "END GENERATED" comments are generated from data in the Material
-// Design token database by the script:
-//   dev/tools/gen_defaults/bin/gen_defaults.dart.
-
-// dart format off
-class _AppBarDefaultsM3 extends AppBarThemeData {
-  _AppBarDefaultsM3(this.context)
-    : super(
-      elevation: 0.0,
-      scrolledUnderElevation: 3.0,
-      titleSpacing: NavigationToolbar.kMiddleSpacing,
-      toolbarHeight: 64.0,
-    );
-
-  final BuildContext context;
-  late final ThemeData _theme = Theme.of(context);
-  late final ColorScheme _colors = _theme.colorScheme;
-  late final TextTheme _textTheme = _theme.textTheme;
-
-  @override
-  Color? get backgroundColor => _colors.surface;
-
-  @override
-  Color? get foregroundColor => _colors.onSurface;
-
-  @override
-  Color? get shadowColor => Colors.transparent;
-
-  @override
-  Color? get surfaceTintColor => Colors.transparent;
-
-  @override
-  IconThemeData? get iconTheme => IconThemeData(
-    color: _colors.onSurface,
-    size: 24.0,
-  );
-
-  @override
-  IconThemeData? get actionsIconTheme => IconThemeData(
-    color: _colors.onSurfaceVariant,
-    size: 24.0,
-  );
-
-  @override
-  TextStyle? get toolbarTextStyle => _textTheme.bodyMedium;
-
-  @override
-  TextStyle? get titleTextStyle => _textTheme.titleLarge;
-
-  // TODO(Craftplacer): Consider using EdgeInsets.only(right: 8.0) instead of
-  // EdgeInsets.zero for Material 3 in the future,
-  // https://github.com/flutter/flutter/issues/155747
-  @override
-  EdgeInsets? get actionsPadding => EdgeInsets.zero;
-}
-
-// Variant configuration
-class _MediumScrollUnderFlexibleConfig with _ScrollUnderFlexibleConfig {
-  _MediumScrollUnderFlexibleConfig(this.context);
-
-  final BuildContext context;
-  late final ThemeData _theme = Theme.of(context);
-  late final ColorScheme _colors = _theme.colorScheme;
-  late final TextTheme _textTheme = _theme.textTheme;
-
-  static const double collapsedHeight = 64.0;
-  static const double expandedHeight = 112.0;
-
-  @override
-  TextStyle? get collapsedTextStyle =>
-    _textTheme.titleLarge?.apply(color: _colors.onSurface);
-
-  @override
-  TextStyle? get expandedTextStyle =>
-    _textTheme.headlineSmall?.apply(color: _colors.onSurface);
-
-  @override
-  EdgeInsetsGeometry get expandedTitlePadding => const EdgeInsets.fromLTRB(16, 0, 16, 20);
-}
-
-class _LargeScrollUnderFlexibleConfig with _ScrollUnderFlexibleConfig {
-  _LargeScrollUnderFlexibleConfig(this.context);
-
-  final BuildContext context;
-  late final ThemeData _theme = Theme.of(context);
-  late final ColorScheme _colors = _theme.colorScheme;
-  late final TextTheme _textTheme = _theme.textTheme;
-
-  static const double collapsedHeight = 64.0;
-  static const double expandedHeight = 152.0;
-
-  @override
-  TextStyle? get collapsedTextStyle =>
-    _textTheme.titleLarge?.apply(color: _colors.onSurface);
-
-  @override
-  TextStyle? get expandedTextStyle =>
-    _textTheme.headlineMedium?.apply(color: _colors.onSurface);
-
-  @override
-  EdgeInsetsGeometry get expandedTitlePadding => const EdgeInsets.fromLTRB(16, 0, 16, 28);
-}
-// dart format on
-
-// END GENERATED TOKEN PROPERTIES - AppBar

packages/material_ui/tool/gen_defaults/temporarily_excluded/generated/app_bar_defaults.g.dart → packages/material_ui/lib/src/generated/app_bar_defaults_m3.g.dart

@@ -2,6 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Do not edit by hand. The code is generated from data in the Material
+// Design token database by the script:
+//   packages/material_ui/tool/gen_defaults/bin/gen_defaults.dart.
+part of '../app_bar.dart';
+
 class _AppBarDefaultsM3 extends AppBarThemeData {
   _AppBarDefaultsM3(this.context)
     : super(

packages/material_ui/tool/gen_defaults/bin/gen_defaults.dart

@@ -12,17 +12,14 @@
 
 import 'package:args/args.dart';
 
-// TODO(elliette): Import template files.
-// import '../templates/x_template.dart';
+import '../templates/app_bar_template.dart';
 
 Future<void> main(List<String> args) async {
   // Parse arguments
   final parser = ArgParser();
   parser.addFlag('verbose', abbr: 'v', help: 'Enable verbose output', negatable: false);
   final ArgResults argResults = parser.parse(args);
   // TODO(elliette): Add token logger when verbose flag is used.
-  // ignore: unused_local_variable
   final verbose = argResults['verbose'] as bool;
-  // TODO(elliette): Invoke template generators.
-  // const XTemplate().generateFile(verbose: verbose);
+  const AppBarTemplateM3().generateFile(verbose: verbose);
 }

packages/material_ui/tool/gen_defaults/templates/app_bar_template.dart

@@ -0,0 +1,121 @@
+// Copyright 2013 The Flutter Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import '../data/app_bar.dart';
+import '../data/app_bar_large.dart';
+import '../data/app_bar_medium.dart';
+import '../data/app_bar_small.dart';
+import 'template.dart';
+
+class AppBarTemplateM3 extends TokenTemplateM3 {
+  const AppBarTemplateM3();
+
+  @override
+  String get name => 'App Bar';
+
+  @override
+  String get parentFilePath => 'app_bar.dart';
+
+  @override
+  String generateContents(String className) =>
+      '''
+class $className extends AppBarThemeData {
+  $className(this.context)
+    : super(
+      elevation: ${number(TokenAppBar.containerElevation)},
+      scrolledUnderElevation: ${number(TokenAppBar.onScrollContainerElevation)},
+      titleSpacing: NavigationToolbar.kMiddleSpacing,
+      toolbarHeight: ${number(TokenAppBarSmall.containerHeight)},
+    );
+
+  final BuildContext context;
+  late final ThemeData _theme = Theme.of(context);
+  late final ColorScheme _colors = _theme.colorScheme;
+  late final TextTheme _textTheme = _theme.textTheme;
+
+  @override
+  Color? get backgroundColor => ${color(TokenAppBar.containerColor, '_colors')};
+
+  @override
+  Color? get foregroundColor => ${color(TokenAppBar.titleColor, '_colors')};
+
+  @override
+  Color? get shadowColor => Colors.transparent;
+
+  @override
+  Color? get surfaceTintColor => Colors.transparent;
+
+  @override
+  IconThemeData? get iconTheme => IconThemeData(
+    color: ${color(TokenAppBar.leadingIconColor, '_colors')},
+    size: ${number(TokenAppBar.iconSize)},
+  );
+
+  @override
+  IconThemeData? get actionsIconTheme => IconThemeData(
+    color: ${color(TokenAppBar.trailingIconColor, '_colors')},
+    size: ${number(TokenAppBar.iconSize)},
+  );
+
+  @override
+  TextStyle? get toolbarTextStyle => _textTheme.bodyMedium;
+
+  @override
+  TextStyle? get titleTextStyle => _textTheme.titleLarge;
+
+  // TODO(Craftplacer): Consider using EdgeInsets.only(right: 8.0) instead of
+  // EdgeInsets.zero for Material 3 in the future,
+  // https://github.com/flutter/flutter/issues/155747
+  @override
+  EdgeInsets? get actionsPadding => EdgeInsets.zero;
+}
+
+// Variant configuration
+class _MediumScrollUnderFlexibleConfig with _ScrollUnderFlexibleConfig {
+  _MediumScrollUnderFlexibleConfig(this.context);
+
+  final BuildContext context;
+  late final ThemeData _theme = Theme.of(context);
+  late final ColorScheme _colors = _theme.colorScheme;
+  late final TextTheme _textTheme = _theme.textTheme;
+
+  static const double collapsedHeight = ${number(TokenAppBarSmall.containerHeight)};
+  static const double expandedHeight = ${number(TokenAppBarMedium.containerHeight)};
+
+  @override
+  TextStyle? get collapsedTextStyle =>
+    _textTheme.titleLarge?.apply(color: ${color(TokenAppBar.titleColor, '_colors')});
+
+  @override
+  TextStyle? get expandedTextStyle =>
+    _textTheme.headlineSmall?.apply(color: ${color(TokenAppBar.titleColor, '_colors')});
+
+  @override
+  EdgeInsetsGeometry get expandedTitlePadding => const EdgeInsets.fromLTRB(16, 0, 16, 20);
+}
+
+class _LargeScrollUnderFlexibleConfig with _ScrollUnderFlexibleConfig {
+  _LargeScrollUnderFlexibleConfig(this.context);
+
+  final BuildContext context;
+  late final ThemeData _theme = Theme.of(context);
+  late final ColorScheme _colors = _theme.colorScheme;
+  late final TextTheme _textTheme = _theme.textTheme;
+
+  static const double collapsedHeight = ${number(TokenAppBarSmall.containerHeight)};
+  static const double expandedHeight = ${number(TokenAppBarLarge.containerHeight)};
+
+  @override
+  TextStyle? get collapsedTextStyle =>
+    _textTheme.titleLarge?.apply(color: ${color(TokenAppBar.titleColor, '_colors')});
+
+  @override
+  TextStyle? get expandedTextStyle =>
+    _textTheme.headlineMedium?.apply(color: ${color(TokenAppBar.titleColor, '_colors')});
+
+  @override
+  EdgeInsetsGeometry get expandedTitlePadding => const EdgeInsets.fromLTRB(16, 0, 16, 28);
+}
+''';
+}