Revert "Implement operator = and hashcode for CupertinoThemeData (#89604)" (#89670)

This reverts commit bf8e1270.

packages/flutter/lib/src/cupertino/text_theme.dart

@@ -247,44 +247,6 @@ class CupertinoTextThemeData with Diagnosticable {
     );
   }
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType) {
-      return false;
-    }
-
-    // Warning: make sure these properties are in the exact same order as in
-    // hashValues() and in the raw constructor and in the order of fields in
-    // the class and in the lerp() method.
-    return other is CupertinoTextThemeData &&
-        other.textStyle == textStyle &&
-        other.actionTextStyle == actionTextStyle &&
-        other.tabLabelTextStyle == tabLabelTextStyle &&
-        other.navTitleTextStyle == navTitleTextStyle &&
-        other.navLargeTitleTextStyle == navLargeTitleTextStyle &&
-        other.navActionTextStyle == navActionTextStyle &&
-        other.pickerTextStyle == pickerTextStyle &&
-        other.dateTimePickerTextStyle == dateTimePickerTextStyle;
-  }
-
-  @override
-  int get hashCode {
-    // Warning: For the sanity of the reader, please make sure these properties
-    // are in the exact same order as in operator == and in the raw constructor
-    // and in the order of fields in the class and in the lerp() method.
-    final List<Object?> values = <Object?>[
-      textStyle,
-      actionTextStyle,
-      tabLabelTextStyle,
-      navTitleTextStyle,
-      navLargeTitleTextStyle,
-      navActionTextStyle,
-      pickerTextStyle,
-      dateTimePickerTextStyle,
-    ];
-    return hashList(values);
-  }
-
   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);

packages/flutter/lib/src/cupertino/theme.dart

@@ -290,38 +290,6 @@ class CupertinoThemeData extends NoDefaultCupertinoThemeData with Diagnosticable
     );
   }
 
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType)
-      return false;
-    // Warning: make sure these properties are in the exact same order as in
-    // hashValues() and in the raw constructor and in the order of fields in
-    // the class and in the lerp() method.
-    return other is CupertinoThemeData &&
-        other.brightness == brightness &&
-        other.primaryColor == primaryColor &&
-        other.primaryContrastingColor == primaryContrastingColor &&
-        other.textTheme == textTheme &&
-        other.barBackgroundColor == barBackgroundColor &&
-        other.scaffoldBackgroundColor == scaffoldBackgroundColor;
-  }
-
-  @override
-  int get hashCode {
-    // Warning: For the sanity of the reader, please make sure these properties
-    // are in the exact same order as in operator == and in the raw constructor
-    // and in the order of fields in the class and in the lerp() method.
-    final List<Object?> values = <Object?>[
-      brightness,
-      primaryColor,
-      primaryContrastingColor,
-      textTheme,
-      barBackgroundColor,
-      scaffoldBackgroundColor,
-    ];
-    return hashList(values);
-  }
-
   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
@@ -347,7 +315,6 @@ class CupertinoThemeData extends NoDefaultCupertinoThemeData with Diagnosticable
 ///
 ///  * [CupertinoThemeData], which uses reasonable default values for
 ///    unspecified theme properties.
-@immutable
 class NoDefaultCupertinoThemeData {
   /// Creates a [NoDefaultCupertinoThemeData] styling specification.
   ///
@@ -475,38 +442,6 @@ class NoDefaultCupertinoThemeData {
       scaffoldBackgroundColor: scaffoldBackgroundColor ?? this.scaffoldBackgroundColor,
     );
   }
-
-  @override
-  bool operator ==(Object other) {
-    if (other.runtimeType != runtimeType)
-      return false;
-    // Warning: make sure these properties are in the exact same order as in
-    // hashValues() and in the raw constructor and in the order of fields in
-    // the class and in the lerp() method.
-    return other is NoDefaultCupertinoThemeData &&
-        other.brightness == brightness &&
-        other.primaryColor == primaryColor &&
-        other.primaryContrastingColor == primaryContrastingColor &&
-        other.textTheme == textTheme &&
-        other.barBackgroundColor == barBackgroundColor &&
-        other.scaffoldBackgroundColor == scaffoldBackgroundColor;
-  }
-
-  @override
-  int get hashCode {
-    // Warning: For the sanity of the reader, please make sure these properties
-    // are in the exact same order as in operator == and in the raw constructor
-    // and in the order of fields in the class and in the lerp() method.
-    final List<Object?> values = <Object?>[
-      brightness,
-      primaryColor,
-      primaryContrastingColor,
-      textTheme,
-      barBackgroundColor,
-      scaffoldBackgroundColor,
-    ];
-    return hashList(values);
-  }
 }
 
 @immutable

packages/flutter/test/cupertino/theme_test.dart

@@ -206,41 +206,6 @@ void main() {
     );
   });
 
-  test('Theme operator == returns correct value for simple cases', () {
-    expect(const CupertinoThemeData(), equals(const CupertinoThemeData()));
-
-    expect(const CupertinoThemeData(brightness: Brightness.light),
-        isNot(equals(const CupertinoThemeData(brightness: Brightness.dark))));
-
-    expect(
-        const CupertinoThemeData(
-            textTheme: CupertinoTextThemeData(
-                primaryColor: CupertinoColors.activeGreen)),
-        isNot(equals(const CupertinoThemeData(
-            textTheme: CupertinoTextThemeData(
-                primaryColor: CupertinoColors.activeOrange)))));
-  });
-
-  test('hashCode behaves correctly for simple cases', () {
-    expect(const CupertinoThemeData().hashCode,
-        equals(const CupertinoThemeData().hashCode));
-
-    expect(
-        const CupertinoThemeData(brightness: Brightness.light).hashCode,
-        isNot(equals(const CupertinoThemeData(brightness: Brightness.dark))
-            .hashCode));
-
-    expect(
-        const CupertinoThemeData(
-                textTheme: CupertinoTextThemeData(
-                    primaryColor: CupertinoColors.activeGreen))
-            .hashCode,
-        isNot(equals(const CupertinoThemeData(
-                textTheme: CupertinoTextThemeData(
-                    primaryColor: CupertinoColors.activeOrange))
-            .hashCode)));
-  });
-
   late Brightness currentBrightness;
   void colorMatches(Color? componentColor, CupertinoDynamicColor expectedDynamicColor) {
     switch (currentBrightness) {

packages/flutter/test/material/theme_test.dart

@@ -591,8 +591,7 @@ void main() {
           ),
         ));
 
-        // Widget does not rebuild as theme color remains overriden.
-        expect(buildCount, 1);
+        expect(buildCount, 2);
         expect(theme.primaryColor, CupertinoColors.activeOrange);
       },
     );