Remove the deprecated accentColor from ThemeData (#120932)

Co-authored-by: Qun Cheng <quncheng@google.com>

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

@@ -23,7 +23,7 @@ enum ButtonTextTheme {
   /// Button text is black or white depending on [ThemeData.brightness].
   normal,
 
-  /// Button text is [ThemeData.accentColor].
+  /// Button text is [ColorScheme.secondary].
   accent,
 
   /// Button text is based on [ThemeData.primaryColor].

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

@@ -381,13 +381,6 @@ class ThemeData with Diagnosticable {
     ToggleButtonsThemeData? toggleButtonsTheme,
     TooltipThemeData? tooltipTheme,
     // DEPRECATED (newest deprecations at the bottom)
-    @Deprecated(
-      'Use colorScheme.secondary instead. '
-      'For more information, consult the migration guide at '
-      'https://flutter.dev/docs/release/breaking-changes/theme-data-accent-properties#migration-guide. '
-      'This feature was deprecated after v2.3.0-0.1.pre.',
-    )
-    Color? accentColor,
     @Deprecated(
       'This "fix" is now enabled by default. '
       'This feature was deprecated after v2.5.0-1.0.pre.',
@@ -478,7 +471,6 @@ class ThemeData with Diagnosticable {
       primaryColor ??= primarySurfaceColor;
       primaryColorBrightness = ThemeData.estimateBrightnessForColor(primarySurfaceColor);
       canvasColor ??= colorScheme.background;
-      accentColor ??= colorScheme.secondary;
       scaffoldBackgroundColor ??= colorScheme.background;
       bottomAppBarColor ??= colorScheme.surface;
       cardColor ??= colorScheme.surface;
@@ -496,8 +488,7 @@ class ThemeData with Diagnosticable {
     primaryColorLight ??= isDark ? Colors.grey[500]! : primarySwatch[100]!;
     primaryColorDark ??= isDark ? Colors.black : primarySwatch[700]!;
     final bool primaryIsDark = estimatedPrimaryColorBrightness == Brightness.dark;
-    toggleableActiveColor ??= isDark ? Colors.tealAccent[200]! : (accentColor ?? primarySwatch[600]!);
-    accentColor ??= isDark ? Colors.tealAccent[200]! : primarySwatch[500]!;
+    toggleableActiveColor ??= isDark ? Colors.tealAccent[200]! : (colorScheme?.secondary ?? primarySwatch[600]!);
     focusColor ??= isDark ? Colors.white.withOpacity(0.12) : Colors.black.withOpacity(0.12);
     hoverColor ??= isDark ? Colors.white.withOpacity(0.04) : Colors.black.withOpacity(0.04);
     shadowColor ??= Colors.black;
@@ -510,7 +501,7 @@ class ThemeData with Diagnosticable {
     colorScheme ??= ColorScheme.fromSwatch(
       primarySwatch: primarySwatch,
       primaryColorDark: primaryColorDark,
-      accentColor: accentColor,
+      accentColor: isDark ? Colors.tealAccent[200]! : primarySwatch[500]!,
       cardColor: cardColor,
       backgroundColor: isDark ? Colors.grey[700]! : primarySwatch[200]!,
       errorColor: Colors.red[700],
@@ -521,7 +512,7 @@ class ThemeData with Diagnosticable {
     // Spec doesn't specify a dark theme secondaryHeaderColor, this is a guess.
     secondaryHeaderColor ??= isDark ? Colors.grey[700]! : primarySwatch[50]!;
     dialogBackgroundColor ??= isDark ? Colors.grey[800]! : Colors.white;
-    indicatorColor ??= accentColor == primaryColor ? Colors.white : accentColor;
+    indicatorColor ??= colorScheme.secondary == primaryColor ? Colors.white : colorScheme.secondary;
     hintColor ??= isDark ? Colors.white60 : Colors.black.withOpacity(0.6);
     // The default [buttonTheme] is here because it doesn't use the defaults for
     // [disabledColor], [highlightColor], and [splashColor].
@@ -702,7 +693,6 @@ class ThemeData with Diagnosticable {
       toggleButtonsTheme: toggleButtonsTheme,
       tooltipTheme: tooltipTheme,
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: accentColor,
       fixTextFieldOutlineLabel: fixTextFieldOutlineLabel,
       primaryColorBrightness: primaryColorBrightness,
       androidOverscrollIndicator: androidOverscrollIndicator,
@@ -813,13 +803,6 @@ class ThemeData with Diagnosticable {
     required this.toggleButtonsTheme,
     required this.tooltipTheme,
     // DEPRECATED (newest deprecations at the bottom)
-    @Deprecated(
-      'Use colorScheme.secondary instead. '
-      'For more information, consult the migration guide at '
-      'https://flutter.dev/docs/release/breaking-changes/theme-data-accent-properties#migration-guide. '
-      'This feature was deprecated after v2.3.0-0.1.pre.',
-    )
-    Color? accentColor,
     @Deprecated(
       'This "fix" is now enabled by default. '
       'This feature was deprecated after v2.5.0-1.0.pre.',
@@ -865,7 +848,6 @@ class ThemeData with Diagnosticable {
 
   }) : // DEPRECATED (newest deprecations at the bottom)
        // should not be `required`, use getter pattern to avoid breakages.
-       _accentColor = accentColor,
        _fixTextFieldOutlineLabel = fixTextFieldOutlineLabel,
        _primaryColorBrightness = primaryColorBrightness,
        _toggleableActiveColor = toggleableActiveColor,
@@ -875,7 +857,6 @@ class ThemeData with Diagnosticable {
        _bottomAppBarColor = bottomAppBarColor,
        assert(toggleableActiveColor != null),
         // DEPRECATED (newest deprecations at the bottom)
-       assert(accentColor != null),
        assert(fixTextFieldOutlineLabel != null),
        assert(primaryColorBrightness != null),
        assert(errorColor != null),
@@ -926,7 +907,6 @@ class ThemeData with Diagnosticable {
       primaryColor: primarySurfaceColor,
       primaryColorBrightness: ThemeData.estimateBrightnessForColor(primarySurfaceColor),
       canvasColor: colorScheme.background,
-      accentColor: colorScheme.secondary,
       scaffoldBackgroundColor: colorScheme.background,
       bottomAppBarColor: colorScheme.surface,
       cardColor: colorScheme.surface,
@@ -1534,25 +1514,6 @@ class ThemeData with Diagnosticable {
 
   // DEPRECATED (newest deprecations at the bottom)
 
-  /// Obsolete property that was originally used as the foreground
-  /// color for widgets (knobs, text, overscroll edge effect, etc).
-  ///
-  /// The material library no longer uses this property. In most cases the
-  /// [colorScheme]'s [ColorScheme.secondary] property is now used instead.
-  ///
-  /// Apps should migrate uses of this property to the theme's [colorScheme]
-  /// [ColorScheme.secondary] color. In cases where a color is needed that
-  /// contrasts well with the secondary color [ColorScheme.onSecondary]
-  /// can be used.
-  @Deprecated(
-    'Use colorScheme.secondary instead. '
-    'For more information, consult the migration guide at '
-    'https://flutter.dev/docs/release/breaking-changes/theme-data-accent-properties#migration-guide. '
-    'This feature was deprecated after v2.3.0-0.1.pre.',
-  )
-  Color get accentColor => _accentColor!;
-  final Color? _accentColor;
-
   /// An obsolete flag to allow apps to opt-out of a
   /// [small fix](https://github.com/flutter/flutter/issues/54028) for the Y
   /// coordinate of the floating label in a [TextField] [OutlineInputBorder].
@@ -1737,13 +1698,6 @@ class ThemeData with Diagnosticable {
     ToggleButtonsThemeData? toggleButtonsTheme,
     TooltipThemeData? tooltipTheme,
     // DEPRECATED (newest deprecations at the bottom)
-    @Deprecated(
-      'No longer used by the framework, please remove any reference to it. '
-      'For more information, consult the migration guide at '
-      'https://flutter.dev/docs/release/breaking-changes/theme-data-accent-properties#migration-guide. '
-      'This feature was deprecated after v2.3.0-0.1.pre.',
-    )
-    Color? accentColor,
     @Deprecated(
       'This "fix" is now enabled by default. '
       'This feature was deprecated after v2.5.0-1.0.pre.',
@@ -1877,7 +1831,6 @@ class ThemeData with Diagnosticable {
       toggleButtonsTheme: toggleButtonsTheme ?? this.toggleButtonsTheme,
       tooltipTheme: tooltipTheme ?? this.tooltipTheme,
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: accentColor ?? _accentColor,
       fixTextFieldOutlineLabel: fixTextFieldOutlineLabel ?? _fixTextFieldOutlineLabel,
       primaryColorBrightness: primaryColorBrightness ?? _primaryColorBrightness,
       androidOverscrollIndicator: androidOverscrollIndicator ?? this.androidOverscrollIndicator,
@@ -2071,7 +2024,6 @@ class ThemeData with Diagnosticable {
       toggleButtonsTheme: ToggleButtonsThemeData.lerp(a.toggleButtonsTheme, b.toggleButtonsTheme, t)!,
       tooltipTheme: TooltipThemeData.lerp(a.tooltipTheme, b.tooltipTheme, t)!,
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: Color.lerp(a.accentColor, b.accentColor, t),
       fixTextFieldOutlineLabel: t < 0.5 ? a.fixTextFieldOutlineLabel : b.fixTextFieldOutlineLabel,
       primaryColorBrightness: t < 0.5 ? a.primaryColorBrightness : b.primaryColorBrightness,
       androidOverscrollIndicator:t < 0.5 ? a.androidOverscrollIndicator : b.androidOverscrollIndicator,
@@ -2177,7 +2129,6 @@ class ThemeData with Diagnosticable {
         other.toggleButtonsTheme == toggleButtonsTheme &&
         other.tooltipTheme == tooltipTheme &&
         // DEPRECATED (newest deprecations at the bottom)
-        other.accentColor == accentColor &&
         other.fixTextFieldOutlineLabel == fixTextFieldOutlineLabel &&
         other.primaryColorBrightness == primaryColorBrightness &&
         other.androidOverscrollIndicator == androidOverscrollIndicator &&
@@ -2280,7 +2231,6 @@ class ThemeData with Diagnosticable {
       toggleButtonsTheme,
       tooltipTheme,
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor,
       fixTextFieldOutlineLabel,
       primaryColorBrightness,
       androidOverscrollIndicator,
@@ -2385,7 +2335,6 @@ class ThemeData with Diagnosticable {
     properties.add(DiagnosticsProperty<ToggleButtonsThemeData>('toggleButtonsTheme', toggleButtonsTheme, level: DiagnosticLevel.debug));
     properties.add(DiagnosticsProperty<TooltipThemeData>('tooltipTheme', tooltipTheme, level: DiagnosticLevel.debug));
     // DEPRECATED (newest deprecations at the bottom)
-    properties.add(ColorProperty('accentColor', accentColor, defaultValue: defaultData.accentColor, level: DiagnosticLevel.debug));
     properties.add(DiagnosticsProperty<bool>('fixTextFieldOutlineLabel', fixTextFieldOutlineLabel, level: DiagnosticLevel.debug));
     properties.add(EnumProperty<Brightness>('primaryColorBrightness', primaryColorBrightness, defaultValue: defaultData.primaryColorBrightness, level: DiagnosticLevel.debug));
     properties.add(EnumProperty<AndroidOverscrollIndicator>('androidOverscrollIndicator', androidOverscrollIndicator, defaultValue: null, level: DiagnosticLevel.debug));

packages/flutter/test/material/theme_data_test.dart

@@ -186,7 +186,6 @@ void main() {
     expect(theme.primaryColor, theme.colorScheme.primary);
     expect(theme.primaryColorBrightness, Brightness.dark);
     expect(theme.canvasColor, theme.colorScheme.background);
-    expect(theme.accentColor, theme.colorScheme.secondary);
     expect(theme.scaffoldBackgroundColor, theme.colorScheme.background);
     expect(theme.bottomAppBarColor, theme.colorScheme.surface);
     expect(theme.cardColor, theme.colorScheme.surface);
@@ -237,7 +236,6 @@ void main() {
     expect(theme.primaryColor, theme.colorScheme.surface);
     expect(theme.primaryColorBrightness, Brightness.dark);
     expect(theme.canvasColor, theme.colorScheme.background);
-    expect(theme.accentColor, theme.colorScheme.secondary);
     expect(theme.scaffoldBackgroundColor, theme.colorScheme.background);
     expect(theme.bottomAppBarColor, theme.colorScheme.surface);
     expect(theme.cardColor, theme.colorScheme.surface);
@@ -285,7 +283,6 @@ void main() {
     expect(theme.primaryColor, theme.colorScheme.primary);
     expect(theme.primaryColorBrightness, Brightness.dark);
     expect(theme.canvasColor, theme.colorScheme.background);
-    expect(theme.accentColor, theme.colorScheme.secondary);
     expect(theme.scaffoldBackgroundColor, theme.colorScheme.background);
     expect(theme.bottomAppBarColor, theme.colorScheme.surface);
     expect(theme.cardColor, theme.colorScheme.surface);
@@ -334,7 +331,6 @@ void main() {
     expect(theme.primaryColor, theme.colorScheme.primary);
     expect(theme.primaryColorBrightness, Brightness.dark);
     expect(theme.canvasColor, theme.colorScheme.background);
-    expect(theme.accentColor, theme.colorScheme.secondary);
     expect(theme.scaffoldBackgroundColor, theme.colorScheme.background);
     expect(theme.bottomAppBarColor, theme.colorScheme.surface);
     expect(theme.cardColor, theme.colorScheme.surface);
@@ -383,7 +379,6 @@ void main() {
     expect(theme.primaryColor, theme.colorScheme.surface);
     expect(theme.primaryColorBrightness, Brightness.dark);
     expect(theme.canvasColor, theme.colorScheme.background);
-    expect(theme.accentColor, theme.colorScheme.secondary);
     expect(theme.scaffoldBackgroundColor, theme.colorScheme.background);
     expect(theme.bottomAppBarColor, theme.colorScheme.surface);
     expect(theme.cardColor, theme.colorScheme.surface);
@@ -401,7 +396,6 @@ void main() {
 
     expect(theme.brightness, equals(Brightness.light));
     expect(theme.primaryColor, equals(lightColors.primary));
-    expect(theme.accentColor, equals(lightColors.secondary));
     expect(theme.cardColor, equals(lightColors.surface));
     expect(theme.backgroundColor, equals(lightColors.background));
     expect(theme.canvasColor, equals(lightColors.background));
@@ -418,7 +412,6 @@ void main() {
     expect(theme.brightness, equals(Brightness.dark));
     // in dark theme's the color used for main components is surface instead of primary
     expect(theme.primaryColor, equals(darkColors.surface));
-    expect(theme.accentColor, equals(darkColors.secondary));
     expect(theme.cardColor, equals(darkColors.surface));
     expect(theme.backgroundColor, equals(darkColors.background));
     expect(theme.canvasColor, equals(darkColors.background));
@@ -808,7 +801,6 @@ void main() {
       toggleButtonsTheme: const ToggleButtonsThemeData(textStyle: TextStyle(color: Colors.black)),
       tooltipTheme: const TooltipThemeData(height: 100),
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: Colors.black,
       fixTextFieldOutlineLabel: false,
       primaryColorBrightness: Brightness.dark,
       androidOverscrollIndicator: AndroidOverscrollIndicator.glow,
@@ -927,7 +919,6 @@ void main() {
       tooltipTheme: const TooltipThemeData(height: 100),
 
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: Colors.white,
       fixTextFieldOutlineLabel: true,
       primaryColorBrightness: Brightness.light,
       androidOverscrollIndicator: AndroidOverscrollIndicator.stretch,
@@ -1029,7 +1020,6 @@ void main() {
       tooltipTheme: otherTheme.tooltipTheme,
 
       // DEPRECATED (newest deprecations at the bottom)
-      accentColor: otherTheme.accentColor,
       fixTextFieldOutlineLabel: otherTheme.fixTextFieldOutlineLabel,
       primaryColorBrightness: otherTheme.primaryColorBrightness,
       androidOverscrollIndicator: otherTheme.androidOverscrollIndicator,
@@ -1132,7 +1122,6 @@ void main() {
     expect(themeDataCopy.tooltipTheme, equals(otherTheme.tooltipTheme));
 
     // DEPRECATED (newest deprecations at the bottom)
-    expect(themeDataCopy.accentColor, equals(otherTheme.accentColor));
     expect(themeDataCopy.fixTextFieldOutlineLabel, equals(otherTheme.fixTextFieldOutlineLabel));
     expect(themeDataCopy.primaryColorBrightness, equals(otherTheme.primaryColorBrightness));
     expect(themeDataCopy.androidOverscrollIndicator, equals(otherTheme.androidOverscrollIndicator));
@@ -1171,7 +1160,6 @@ void main() {
     expect(theme.brightness, equals(Brightness.dark));
     expect(theme.colorScheme.brightness, equals(Brightness.dark));
     expect(theme.primaryColor, equals(lightColors.primary));
-    expect(theme.accentColor, equals(lightColors.secondary));
     expect(theme.cardColor, equals(lightColors.surface));
     expect(theme.backgroundColor, equals(lightColors.background));
     expect(theme.canvasColor, equals(lightColors.background));
@@ -1267,7 +1255,6 @@ void main() {
       'toggleButtonsTheme',
       'tooltipTheme',
       // DEPRECATED (newest deprecations at the bottom)
-      'accentColor',
       'fixTextFieldOutlineLabel',
       'primaryColorBrightness',
       'androidOverscrollIndicator',