whenOrNull<TResult extends Object?> method Null safety

@optionalTypeArgs

TResult? whenOrNull<TResult extends Object?>(

TResult? $default(
1. bool inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
{TResult? displayLarge(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? displayMedium(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? displaySmall(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? headlineLarge(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? headlineMedium(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? headlineSmall(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? bodyLarge(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? bodyMedium(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? bodySmall(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? titleLarge(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? titleMedium(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? titleSmall(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? labelLarge(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? labelMedium(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?,
TResult? labelSmall(
1. bool? inherit,
2. Color? color,
3. Color? backgroundColor,
4. double? fontSize,
5. FontWeight? fontWeight,
6. FontStyle? fontStyle,
7. double? letterSpacing,
8. double? wordSpacing,
9. TextBaseline? textBaseline,
10. double? height,
11. TextLeadingDistribution? leadingDistribution,
12. Locale? locale,
13. Paint? foreground,
14. Paint? background,
15. List<Shadow>? shadows,
16. List<FontFeature>? fontFeatures,
17. List<FontVariation>? fontVariations,
18. TextDecoration? decoration,
19. Color? decorationColor,
20. TextDecorationStyle? decorationStyle,
21. double? decorationThickness,
22. String? debugLabel,
23. String? fontFamily,
24. List<String>? fontFamilyFallback,
25. String? package,
26. TextOverflow? overflow
)?}

)

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  TResult? Function(
          bool inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      $default, {
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      displayLarge,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      displayMedium,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      displaySmall,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      headlineLarge,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      headlineMedium,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      headlineSmall,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      bodyLarge,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      bodyMedium,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      bodySmall,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      titleLarge,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      titleMedium,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      titleSmall,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      labelLarge,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      labelMedium,
  TResult? Function(
          bool? inherit,
          Color? color,
          Color? backgroundColor,
          double? fontSize,
          FontWeight? fontWeight,
          FontStyle? fontStyle,
          double? letterSpacing,
          double? wordSpacing,
          TextBaseline? textBaseline,
          double? height,
          TextLeadingDistribution? leadingDistribution,
          Locale? locale,
          Paint? foreground,
          Paint? background,
          List<Shadow>? shadows,
          List<FontFeature>? fontFeatures,
          List<FontVariation>? fontVariations,
          TextDecoration? decoration,
          Color? decorationColor,
          TextDecorationStyle? decorationStyle,
          double? decorationThickness,
          String? debugLabel,
          String? fontFamily,
          List<String>? fontFamilyFallback,
          String? package,
          TextOverflow? overflow)?
      labelSmall,
}) =>
    throw _privateConstructorUsedError;

whenOrNull<TResult extends Object?> method Null safety

Implementation

TextStyle class