Remove deprecated AppBar/SliverAppBar/AppBarTheme.textTheme member (#119253)

* remove textTheme usage from AppBar SliverAppBar and AppBarTheme and migrate usages in the framework

* Fix test

* update _PackageLicensePageTitle to accept titleTextStyle

* Fix test

---------
Co-authored-by: Renzo Olivares <roliv@google.com>

packages/flutter/lib/src/material/about.dart

@@ -872,7 +872,8 @@ class _PackageLicensePageState extends State<_PackageLicensePage> {
           title: _PackageLicensePageTitle(
             title,
             subtitle,
-            theme.appBarTheme.textTheme ?? theme.primaryTextTheme,
+            theme.primaryTextTheme,
+            theme.appBarTheme.titleTextStyle,
           ),
         ),
         body: Center(
@@ -904,7 +905,7 @@ class _PackageLicensePageState extends State<_PackageLicensePage> {
             automaticallyImplyLeading: false,
             pinned: true,
             backgroundColor: theme.cardColor,
-            title: _PackageLicensePageTitle(title, subtitle, theme.textTheme),
+            title: _PackageLicensePageTitle(title, subtitle, theme.textTheme, theme.textTheme.titleLarge),
           ),
           SliverPadding(
             padding: padding,
@@ -934,21 +935,24 @@ class _PackageLicensePageTitle extends StatelessWidget {
     this.title,
     this.subtitle,
     this.theme,
+    this.titleTextStyle,
   );
 
   final String title;
   final String subtitle;
   final TextTheme theme;
+  final TextStyle? titleTextStyle;
 
   @override
   Widget build(BuildContext context) {
     final Color? color = Theme.of(context).appBarTheme.foregroundColor;
+    final TextStyle? effectiveTitleTextStyle = titleTextStyle ?? theme.titleLarge;
 
     return Column(
       mainAxisAlignment: MainAxisAlignment.center,
       crossAxisAlignment: CrossAxisAlignment.start,
       children: <Widget>[
-        Text(title, style: theme.titleLarge?.copyWith(color: color)),
+        Text(title, style: effectiveTitleTextStyle?.copyWith(color: color)),
         Text(subtitle, style: theme.titleSmall?.copyWith(color: color)),
       ],
     );

packages/flutter/lib/src/material/app_bar.dart

@@ -201,11 +201,6 @@ class AppBar extends StatefulWidget implements PreferredSizeWidget {
     this.brightness,
     this.iconTheme,
     this.actionsIconTheme,
-    @Deprecated(
-      'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-      'This feature was deprecated after v2.4.0-0.0.pre.',
-    )
-    this.textTheme,
     this.primary = true,
     this.centerTitle,
     this.excludeHeaderSemantics = false,
@@ -612,23 +607,6 @@ class AppBar extends StatefulWidget implements PreferredSizeWidget {
   ///  * [iconTheme], which defines the appearance of all of the toolbar icons.
   final IconThemeData? actionsIconTheme;
 
-  /// {@template flutter.material.appbar.textTheme}
-  /// This property is deprecated, please use [toolbarTextStyle] and
-  /// [titleTextStyle] instead.
-  ///
-  /// The typographic styles to use for text in the app bar. Typically this is
-  /// set along with [backgroundColor], [iconTheme].
-  ///
-  /// If this property is null, then [AppBarTheme.textTheme] of
-  /// [ThemeData.appBarTheme] is used. If that is also null, then
-  /// [ThemeData.primaryTextTheme] is used.
-  /// {@endtemplate}
-  @Deprecated(
-    'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-    'This feature was deprecated after v2.4.0-0.0.pre.',
-  )
-  final TextTheme? textTheme;
-
   /// {@template flutter.material.appbar.primary}
   /// Whether this app bar is being displayed at the top of the screen.
   ///
@@ -715,7 +693,7 @@ class AppBar extends StatefulWidget implements PreferredSizeWidget {
   ///
   /// If true, preserves the original defaults for the [backgroundColor],
   /// [iconTheme], [actionsIconTheme] properties, and the original use of
-  /// the [textTheme] and [brightness] properties.
+  /// the [brightness] property.
   ///
   /// If this property is null, then [AppBarTheme.backwardsCompatibility] of
   /// [ThemeData.appBarTheme] is used. If that is also null, the default
@@ -968,16 +946,16 @@ class _AppBarState extends State<AppBar> {
       ?? overallIconTheme;
 
     TextStyle? toolbarTextStyle = backwardsCompatibility
-      ? widget.textTheme?.bodyMedium
-        ?? appBarTheme.textTheme?.bodyMedium
+      ? widget.toolbarTextStyle
+        ?? appBarTheme.toolbarTextStyle
         ?? theme.primaryTextTheme.bodyMedium
       : widget.toolbarTextStyle
         ?? appBarTheme.toolbarTextStyle
         ?? defaults.toolbarTextStyle?.copyWith(color: foregroundColor);
 
     TextStyle? titleTextStyle = backwardsCompatibility
-      ? widget.textTheme?.titleLarge
-        ?? appBarTheme.textTheme?.titleLarge
+      ? widget.titleTextStyle
+        ?? appBarTheme.titleTextStyle
         ?? theme.primaryTextTheme.titleLarge
       : widget.titleTextStyle
         ?? appBarTheme.titleTextStyle
@@ -1294,7 +1272,6 @@ class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
     required this.brightness,
     required this.iconTheme,
     required this.actionsIconTheme,
-    required this.textTheme,
     required this.primary,
     required this.centerTitle,
     required this.excludeHeaderSemantics,
@@ -1335,7 +1312,6 @@ class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
   final Brightness? brightness;
   final IconThemeData? iconTheme;
   final IconThemeData? actionsIconTheme;
-  final TextTheme? textTheme;
   final bool primary;
   final bool? centerTitle;
   final bool excludeHeaderSemantics;
@@ -1412,7 +1388,6 @@ class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
         brightness: brightness,
         iconTheme: iconTheme,
         actionsIconTheme: actionsIconTheme,
-        textTheme: textTheme,
         primary: primary,
         centerTitle: centerTitle,
         excludeHeaderSemantics: excludeHeaderSemantics,
@@ -1448,7 +1423,6 @@ class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
         || brightness != oldDelegate.brightness
         || iconTheme != oldDelegate.iconTheme
         || actionsIconTheme != oldDelegate.actionsIconTheme
-        || textTheme != oldDelegate.textTheme
         || primary != oldDelegate.primary
         || centerTitle != oldDelegate.centerTitle
         || titleSpacing != oldDelegate.titleSpacing
@@ -1588,11 +1562,6 @@ class SliverAppBar extends StatefulWidget {
     this.brightness,
     this.iconTheme,
     this.actionsIconTheme,
-    @Deprecated(
-      'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-      'This feature was deprecated after v2.4.0-0.0.pre.',
-    )
-    this.textTheme,
     this.primary = true,
     this.centerTitle,
     this.excludeHeaderSemantics = false,
@@ -1915,15 +1884,6 @@ class SliverAppBar extends StatefulWidget {
   /// This property is used to configure an [AppBar].
   final IconThemeData? actionsIconTheme;
 
-  /// {@macro flutter.material.appbar.textTheme}
-  ///
-  /// This property is used to configure an [AppBar].
-  @Deprecated(
-    'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-    'This feature was deprecated after v2.4.0-0.0.pre.',
-  )
-  final TextTheme? textTheme;
-
   /// {@macro flutter.material.appbar.primary}
   ///
   /// This property is used to configure an [AppBar].
@@ -2192,7 +2152,6 @@ class _SliverAppBarState extends State<SliverAppBar> with TickerProviderStateMix
           brightness: widget.brightness,
           iconTheme: widget.iconTheme,
           actionsIconTheme: widget.actionsIconTheme,
-          textTheme: widget.textTheme,
           primary: widget.primary,
           centerTitle: widget.centerTitle,
           excludeHeaderSemantics: widget.excludeHeaderSemantics,

packages/flutter/lib/src/material/app_bar_theme.dart

@@ -8,7 +8,6 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 
-import 'text_theme.dart';
 import 'theme.dart';
 
 /// Overrides the default values of visual properties for descendant
@@ -43,11 +42,6 @@ class AppBarTheme with Diagnosticable {
     this.shape,
     this.iconTheme,
     this.actionsIconTheme,
-    @Deprecated(
-      'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-      'This feature was deprecated after v2.4.0-0.0.pre.',
-    )
-    this.textTheme,
     this.centerTitle,
     this.titleSpacing,
     this.toolbarHeight,
@@ -161,24 +155,6 @@ class AppBarTheme with Diagnosticable {
   ///    [AppBar.foregroundColor] in all descendant [AppBar] widgets.
   final IconThemeData? actionsIconTheme;
 
-  /// This property is deprecated, please use [toolbarTextStyle] and
-  /// [titleTextStyle] instead.
-  ///
-  /// Overrides the default value of the obsolete [AppBar.textTheme]
-  /// property in all descendant [AppBar] widgets.
-  ///
-  /// See also:
-  ///
-  ///  * [toolbarTextStyle], which overrides the default value of
-  ///    [AppBar.toolbarTextStyle in all descendant [AppBar] widgets.
-  ///  * [titleTextStyle], which overrides the default value of
-  ///    [AppBar.titleTextStyle in all descendant [AppBar] widgets.
-  @Deprecated(
-    'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-    'This feature was deprecated after v2.4.0-0.0.pre.',
-  )
-  final TextTheme? textTheme;
-
   /// Overrides the default value of [AppBar.centerTitle]
   /// property in all descendant [AppBar] widgets.
   final bool? centerTitle;
@@ -252,11 +228,6 @@ class AppBarTheme with Diagnosticable {
     Color? surfaceTintColor,
     ShapeBorder? shape,
     IconThemeData? iconTheme,
-    @Deprecated(
-      'This property is no longer used, please use toolbarTextStyle and titleTextStyle instead. '
-      'This feature was deprecated after v2.4.0-0.0.pre.',
-    )
-    TextTheme? textTheme,
     bool? centerTitle,
     double? titleSpacing,
     double? toolbarHeight,
@@ -284,7 +255,6 @@ class AppBarTheme with Diagnosticable {
       shape: shape ?? this.shape,
       iconTheme: iconTheme ?? this.iconTheme,
       actionsIconTheme: actionsIconTheme ?? this.actionsIconTheme,
-      textTheme: textTheme ?? this.textTheme,
       centerTitle: centerTitle ?? this.centerTitle,
       titleSpacing: titleSpacing ?? this.titleSpacing,
       toolbarHeight: toolbarHeight ?? this.toolbarHeight,
@@ -317,7 +287,6 @@ class AppBarTheme with Diagnosticable {
       shape: ShapeBorder.lerp(a?.shape, b?.shape, t),
       iconTheme: IconThemeData.lerp(a?.iconTheme, b?.iconTheme, t),
       actionsIconTheme: IconThemeData.lerp(a?.actionsIconTheme, b?.actionsIconTheme, t),
-      textTheme: TextTheme.lerp(a?.textTheme, b?.textTheme, t),
       centerTitle: t < 0.5 ? a?.centerTitle : b?.centerTitle,
       titleSpacing: lerpDouble(a?.titleSpacing, b?.titleSpacing, t),
       toolbarHeight: lerpDouble(a?.toolbarHeight, b?.toolbarHeight, t),
@@ -340,7 +309,6 @@ class AppBarTheme with Diagnosticable {
     shape,
     iconTheme,
     actionsIconTheme,
-    textTheme,
     centerTitle,
     titleSpacing,
     toolbarHeight,
@@ -369,7 +337,6 @@ class AppBarTheme with Diagnosticable {
         && other.shape == shape
         && other.iconTheme == iconTheme
         && other.actionsIconTheme == actionsIconTheme
-        && other.textTheme == textTheme
         && other.centerTitle == centerTitle
         && other.titleSpacing == titleSpacing
         && other.toolbarHeight == toolbarHeight
@@ -392,7 +359,6 @@ class AppBarTheme with Diagnosticable {
     properties.add(DiagnosticsProperty<ShapeBorder>('shape', shape, defaultValue: null));
     properties.add(DiagnosticsProperty<IconThemeData>('iconTheme', iconTheme, defaultValue: null));
     properties.add(DiagnosticsProperty<IconThemeData>('actionsIconTheme', actionsIconTheme, defaultValue: null));
-    properties.add(DiagnosticsProperty<TextTheme>('textTheme', textTheme, defaultValue: null));
     properties.add(DiagnosticsProperty<bool>('centerTitle', centerTitle, defaultValue: null));
     properties.add(DiagnosticsProperty<double>('titleSpacing', titleSpacing, defaultValue: null));
     properties.add(DiagnosticsProperty<double>('toolbarHeight', toolbarHeight, defaultValue: null));

packages/flutter/lib/src/material/search.dart

@@ -234,7 +234,8 @@ abstract class SearchDelegate<T> {
         brightness: colorScheme.brightness,
         backgroundColor: colorScheme.brightness == Brightness.dark ? Colors.grey[900] : Colors.white,
         iconTheme: theme.primaryIconTheme.copyWith(color: Colors.grey),
-        textTheme: theme.textTheme,
+        titleTextStyle: theme.textTheme.titleLarge,
+        toolbarTextStyle: theme.textTheme.bodyMedium,
       ),
       inputDecorationTheme: searchFieldDecorationTheme ??
           InputDecorationTheme(

packages/flutter/test/material/about_test.dart

@@ -332,10 +332,6 @@ void main() {
       fontSize: 20,
       color: Colors.indigo,
     );
-    const TextStyle subtitleTextStyle = TextStyle(
-      fontSize: 15,
-      color: Colors.indigo,
-    );
 
     await tester.pumpWidget(
       MaterialApp(
@@ -352,10 +348,7 @@ void main() {
             ),
           ),
           appBarTheme: const AppBarTheme(
-            textTheme: TextTheme(
-              titleLarge: titleTextStyle,
-              titleSmall: subtitleTextStyle,
-            ),
+            titleTextStyle: titleTextStyle,
             foregroundColor: Colors.indigo,
           ),
         ),
@@ -376,8 +369,6 @@ void main() {
     // Check for titles style.
     final Text title = tester.widget(find.text('AAA'));
     expect(title.style, titleTextStyle);
-    final Text subtitle = tester.widget(find.text('1 license.'));
-    expect(subtitle.style, subtitleTextStyle);
   });
 
   testWidgets('LicensePage respects the notch', (WidgetTester tester) async {