packages/flutter/lib/src/material/data_table_theme.dart - mirrors/flutter - Git at Google

 // Copyright 2014 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 import 'dart:ui' show lerpDouble;

 import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';

 import 'material_state.dart';
 import 'theme.dart';

 // Examples can assume:
 // late BuildContext context;

 /// Defines default property values for descendant [DataTable]
 /// widgets.
 ///
 /// Descendant widgets obtain the current [DataTableThemeData] object
 /// using `DataTableTheme.of(context)`. Instances of
 /// [DataTableThemeData] can be customized with
 /// [DataTableThemeData.copyWith].
 ///
 /// Typically a [DataTableThemeData] is specified as part of the
 /// overall [Theme] with [ThemeData.dataTableTheme].
 ///
 /// All [DataTableThemeData] properties are `null` by default. When
 /// null, the [DataTable] will use the values from [ThemeData] if they exist,
 /// otherwise it will provide its own defaults based on the overall [Theme]'s
 /// textTheme and colorScheme. See the individual [DataTable] properties for
 /// details.
 ///
 /// See also:
 ///
 ///  * [ThemeData], which describes the overall theme information for the
 ///    application.
 @immutable
 class DataTableThemeData with Diagnosticable {
   /// Creates a theme that can be used for [ThemeData.dataTableTheme].
   const DataTableThemeData({
     this.decoration,
     this.dataRowColor,
     @Deprecated(
       'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
       'This feature was deprecated after v3.7.0-5.0.pre.',
     )
     double? dataRowHeight,
     double? dataRowMinHeight,
     double? dataRowMaxHeight,
     this.dataTextStyle,
     this.headingRowColor,
     this.headingRowHeight,
     this.headingTextStyle,
     this.horizontalMargin,
     this.columnSpacing,
     this.dividerThickness,
     this.checkboxHorizontalMargin,
     this.headingCellCursor,
     this.dataRowCursor,
   }) : assert(dataRowMinHeight == null || dataRowMaxHeight == null || dataRowMaxHeight >= dataRowMinHeight),
        assert(dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null),
          'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.'),
        dataRowMinHeight = dataRowHeight ?? dataRowMinHeight,
        dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight;

   /// {@macro flutter.material.dataTable.decoration}
   final Decoration? decoration;

   /// {@macro flutter.material.dataTable.dataRowColor}
   /// {@macro flutter.material.DataTable.dataRowColor}
   final MaterialStateProperty<Color?>? dataRowColor;

   /// {@macro flutter.material.dataTable.dataRowHeight}
   @Deprecated(
     'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
     'This feature was deprecated after v3.7.0-5.0.pre.',
   )
   double? get dataRowHeight => dataRowMinHeight == dataRowMaxHeight ? dataRowMinHeight : null;

   /// {@macro flutter.material.dataTable.dataRowMinHeight}
   final double? dataRowMinHeight;

   /// {@macro flutter.material.dataTable.dataRowMaxHeight}
   final double? dataRowMaxHeight;

   /// {@macro flutter.material.dataTable.dataTextStyle}
   final TextStyle? dataTextStyle;

   /// {@macro flutter.material.dataTable.headingRowColor}
   /// {@macro flutter.material.DataTable.headingRowColor}
   final MaterialStateProperty<Color?>? headingRowColor;

   /// {@macro flutter.material.dataTable.headingRowHeight}
   final double? headingRowHeight;

   /// {@macro flutter.material.dataTable.headingTextStyle}
   final TextStyle? headingTextStyle;

   /// {@macro flutter.material.dataTable.horizontalMargin}
   final double? horizontalMargin;

   /// {@macro flutter.material.dataTable.columnSpacing}
   final double? columnSpacing;

   /// {@macro flutter.material.dataTable.dividerThickness}
   final double? dividerThickness;

   /// {@macro flutter.material.dataTable.checkboxHorizontalMargin}
   final double? checkboxHorizontalMargin;

   /// If specified, overrides the default value of [DataColumn.mouseCursor].
   final MaterialStateProperty<MouseCursor?>? headingCellCursor;

   /// If specified, overrides the default value of [DataRow.mouseCursor].
   final MaterialStateProperty<MouseCursor?>? dataRowCursor;

   /// Creates a copy of this object but with the given fields replaced with the
   /// new values.
   DataTableThemeData copyWith({
     Decoration? decoration,
     MaterialStateProperty<Color?>? dataRowColor,
     @Deprecated(
       'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
       'This feature was deprecated after v3.7.0-5.0.pre.',
     )
     double? dataRowHeight,
     double? dataRowMinHeight,
     double? dataRowMaxHeight,
     TextStyle? dataTextStyle,
     MaterialStateProperty<Color?>? headingRowColor,
     double? headingRowHeight,
     TextStyle? headingTextStyle,
     double? horizontalMargin,
     double? columnSpacing,
     double? dividerThickness,
     double? checkboxHorizontalMargin,
     MaterialStateProperty<MouseCursor?>? headingCellCursor,
     MaterialStateProperty<MouseCursor?>? dataRowCursor,
   }) {
     assert(dataRowHeight == null || (dataRowMinHeight == null && dataRowMaxHeight == null),
       'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.');
     dataRowMinHeight = dataRowHeight ?? dataRowMinHeight;
     dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight;

     return DataTableThemeData(
       decoration: decoration ?? this.decoration,
       dataRowColor: dataRowColor ?? this.dataRowColor,
       dataRowMinHeight: dataRowMinHeight ?? this.dataRowMinHeight,
       dataRowMaxHeight: dataRowMaxHeight ?? this.dataRowMaxHeight,
       dataTextStyle: dataTextStyle ?? this.dataTextStyle,
       headingRowColor: headingRowColor ?? this.headingRowColor,
       headingRowHeight: headingRowHeight ?? this.headingRowHeight,
       headingTextStyle: headingTextStyle ?? this.headingTextStyle,
       horizontalMargin: horizontalMargin ?? this.horizontalMargin,
       columnSpacing: columnSpacing ?? this.columnSpacing,
       dividerThickness: dividerThickness ?? this.dividerThickness,
       checkboxHorizontalMargin: checkboxHorizontalMargin ?? this.checkboxHorizontalMargin,
       headingCellCursor: headingCellCursor ?? this.headingCellCursor,
       dataRowCursor: dataRowCursor ?? this.dataRowCursor,
     );
   }

   /// Linearly interpolate between two [DataTableThemeData]s.
   ///
   /// The argument `t` must not be null.
   ///
   /// {@macro dart.ui.shadow.lerp}
   static DataTableThemeData lerp(DataTableThemeData a, DataTableThemeData b, double t) {
     if (identical(a, b)) {
       return a;
     }
     return DataTableThemeData(
       decoration: Decoration.lerp(a.decoration, b.decoration, t),
       dataRowColor: MaterialStateProperty.lerp<Color?>(a.dataRowColor, b.dataRowColor, t, Color.lerp),
       dataRowMinHeight: lerpDouble(a.dataRowMinHeight, b.dataRowMinHeight, t),
       dataRowMaxHeight: lerpDouble(a.dataRowMaxHeight, b.dataRowMaxHeight, t),
       dataTextStyle: TextStyle.lerp(a.dataTextStyle, b.dataTextStyle, t),
       headingRowColor: MaterialStateProperty.lerp<Color?>(a.headingRowColor, b.headingRowColor, t, Color.lerp),
       headingRowHeight: lerpDouble(a.headingRowHeight, b.headingRowHeight, t),
       headingTextStyle: TextStyle.lerp(a.headingTextStyle, b.headingTextStyle, t),
       horizontalMargin: lerpDouble(a.horizontalMargin, b.horizontalMargin, t),
       columnSpacing: lerpDouble(a.columnSpacing, b.columnSpacing, t),
       dividerThickness: lerpDouble(a.dividerThickness, b.dividerThickness, t),
       checkboxHorizontalMargin: lerpDouble(a.checkboxHorizontalMargin, b.checkboxHorizontalMargin, t),
       headingCellCursor: t < 0.5 ? a.headingCellCursor : b.headingCellCursor,
       dataRowCursor: t < 0.5 ? a.dataRowCursor : b.dataRowCursor,
     );
   }

   @override
   int get hashCode => Object.hash(
     decoration,
     dataRowColor,
     dataRowMinHeight,
     dataRowMaxHeight,
     dataTextStyle,
     headingRowColor,
     headingRowHeight,
     headingTextStyle,
     horizontalMargin,
     columnSpacing,
     dividerThickness,
     checkboxHorizontalMargin,
     headingCellCursor,
     dataRowCursor,
   );

   @override
   bool operator ==(Object other) {
     if (identical(this, other)) {
       return true;
     }
     if (other.runtimeType != runtimeType) {
       return false;
     }
     return other is DataTableThemeData
       && other.decoration == decoration
       && other.dataRowColor == dataRowColor
       && other.dataRowMinHeight == dataRowMinHeight
       && other.dataRowMaxHeight == dataRowMaxHeight
       && other.dataTextStyle == dataTextStyle
       && other.headingRowColor == headingRowColor
       && other.headingRowHeight == headingRowHeight
       && other.headingTextStyle == headingTextStyle
       && other.horizontalMargin == horizontalMargin
       && other.columnSpacing == columnSpacing
       && other.dividerThickness == dividerThickness
       && other.checkboxHorizontalMargin == checkboxHorizontalMargin
       && other.headingCellCursor == headingCellCursor
       && other.dataRowCursor == dataRowCursor;
   }

   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
     properties.add(DiagnosticsProperty<Decoration>('decoration', decoration, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('dataRowColor', dataRowColor, defaultValue: null));
     properties.add(DoubleProperty('dataRowMinHeight', dataRowMinHeight, defaultValue: null));
     properties.add(DoubleProperty('dataRowMaxHeight', dataRowMaxHeight, defaultValue: null));
     properties.add(DiagnosticsProperty<TextStyle>('dataTextStyle', dataTextStyle, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('headingRowColor', headingRowColor, defaultValue: null));
     properties.add(DoubleProperty('headingRowHeight', headingRowHeight, defaultValue: null));
     properties.add(DiagnosticsProperty<TextStyle>('headingTextStyle', headingTextStyle, defaultValue: null));
     properties.add(DoubleProperty('horizontalMargin', horizontalMargin, defaultValue: null));
     properties.add(DoubleProperty('columnSpacing', columnSpacing, defaultValue: null));
     properties.add(DoubleProperty('dividerThickness', dividerThickness, defaultValue: null));
     properties.add(DoubleProperty('checkboxHorizontalMargin', checkboxHorizontalMargin, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<MouseCursor?>?>('headingCellCursor', headingCellCursor, defaultValue: null));
     properties.add(DiagnosticsProperty<MaterialStateProperty<MouseCursor?>?>('dataRowCursor', dataRowCursor, defaultValue: null));
   }
 }

 /// Applies a data table theme to descendant [DataTable] widgets.
 ///
 /// Descendant widgets obtain the current theme's [DataTableTheme] object using
 /// [DataTableTheme.of]. When a widget uses [DataTableTheme.of], it is
 /// automatically rebuilt if the theme later changes.
 ///
 /// A data table theme can be specified as part of the overall Material
 /// theme using [ThemeData.dataTableTheme].
 ///
 /// See also:
 ///
 ///  * [DataTableThemeData], which describes the actual configuration
 ///    of a data table theme.
 class DataTableTheme extends InheritedWidget {
   /// Constructs a data table theme that configures all descendant
   /// [DataTable] widgets.
   ///
   /// The [data] must not be null.
   const DataTableTheme({
     super.key,
     required this.data,
     required super.child,
   });

   /// The properties used for all descendant [DataTable] widgets.
   final DataTableThemeData data;

   /// Returns the configuration [data] from the closest
   /// [DataTableTheme] ancestor. If there is no ancestor, it returns
   /// [ThemeData.dataTableTheme]. Applications can assume that the
   /// returned value will not be null.
   ///
   /// Typical usage is as follows:
   ///
   /// ```dart
   /// DataTableThemeData theme = DataTableTheme.of(context);
   /// ```
   static DataTableThemeData of(BuildContext context) {
     final DataTableTheme? dataTableTheme = context.dependOnInheritedWidgetOfExactType<DataTableTheme>();
     return dataTableTheme?.data ?? Theme.of(context).dataTableTheme;
   }

   @override
   bool updateShouldNotify(DataTableTheme oldWidget) => data != oldWidget.data;
 }
	// Copyright 2014 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'dart:ui' show lerpDouble;

	import 'package:flutter/foundation.dart';
	import 'package:flutter/widgets.dart';

	import 'material_state.dart';
	import 'theme.dart';

	// Examples can assume:
	// late BuildContext context;

	/// Defines default property values for descendant [DataTable]
	/// widgets.
	///
	/// Descendant widgets obtain the current [DataTableThemeData] object
	/// using `DataTableTheme.of(context)`. Instances of
	/// [DataTableThemeData] can be customized with
	/// [DataTableThemeData.copyWith].
	///
	/// Typically a [DataTableThemeData] is specified as part of the
	/// overall [Theme] with [ThemeData.dataTableTheme].
	///
	/// All [DataTableThemeData] properties are `null` by default. When
	/// null, the [DataTable] will use the values from [ThemeData] if they exist,
	/// otherwise it will provide its own defaults based on the overall [Theme]'s
	/// textTheme and colorScheme. See the individual [DataTable] properties for
	/// details.
	///
	/// See also:
	///
	/// * [ThemeData], which describes the overall theme information for the
	/// application.
	@immutable
	class DataTableThemeData with Diagnosticable {
	/// Creates a theme that can be used for [ThemeData.dataTableTheme].
	const DataTableThemeData({
	this.decoration,
	this.dataRowColor,
	@Deprecated(
	'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
	'This feature was deprecated after v3.7.0-5.0.pre.',
	)
	double? dataRowHeight,
	double? dataRowMinHeight,
	double? dataRowMaxHeight,
	this.dataTextStyle,
	this.headingRowColor,
	this.headingRowHeight,
	this.headingTextStyle,
	this.horizontalMargin,
	this.columnSpacing,
	this.dividerThickness,
	this.checkboxHorizontalMargin,
	this.headingCellCursor,
	this.dataRowCursor,
	}) : assert(dataRowMinHeight == null \|\| dataRowMaxHeight == null \|\| dataRowMaxHeight >= dataRowMinHeight),
	assert(dataRowHeight == null \|\| (dataRowMinHeight == null && dataRowMaxHeight == null),
	'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.'),
	dataRowMinHeight = dataRowHeight ?? dataRowMinHeight,
	dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight;

	/// {@macro flutter.material.dataTable.decoration}
	final Decoration? decoration;

	/// {@macro flutter.material.dataTable.dataRowColor}
	/// {@macro flutter.material.DataTable.dataRowColor}
	final MaterialStateProperty<Color?>? dataRowColor;

	/// {@macro flutter.material.dataTable.dataRowHeight}
	@Deprecated(
	'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
	'This feature was deprecated after v3.7.0-5.0.pre.',
	)
	double? get dataRowHeight => dataRowMinHeight == dataRowMaxHeight ? dataRowMinHeight : null;

	/// {@macro flutter.material.dataTable.dataRowMinHeight}
	final double? dataRowMinHeight;

	/// {@macro flutter.material.dataTable.dataRowMaxHeight}
	final double? dataRowMaxHeight;

	/// {@macro flutter.material.dataTable.dataTextStyle}
	final TextStyle? dataTextStyle;

	/// {@macro flutter.material.dataTable.headingRowColor}
	/// {@macro flutter.material.DataTable.headingRowColor}
	final MaterialStateProperty<Color?>? headingRowColor;

	/// {@macro flutter.material.dataTable.headingRowHeight}
	final double? headingRowHeight;

	/// {@macro flutter.material.dataTable.headingTextStyle}
	final TextStyle? headingTextStyle;

	/// {@macro flutter.material.dataTable.horizontalMargin}
	final double? horizontalMargin;

	/// {@macro flutter.material.dataTable.columnSpacing}
	final double? columnSpacing;

	/// {@macro flutter.material.dataTable.dividerThickness}
	final double? dividerThickness;

	/// {@macro flutter.material.dataTable.checkboxHorizontalMargin}
	final double? checkboxHorizontalMargin;

	/// If specified, overrides the default value of [DataColumn.mouseCursor].
	final MaterialStateProperty<MouseCursor?>? headingCellCursor;

	/// If specified, overrides the default value of [DataRow.mouseCursor].
	final MaterialStateProperty<MouseCursor?>? dataRowCursor;

	/// Creates a copy of this object but with the given fields replaced with the
	/// new values.
	DataTableThemeData copyWith({
	Decoration? decoration,
	MaterialStateProperty<Color?>? dataRowColor,
	@Deprecated(
	'Migrate to use dataRowMinHeight and dataRowMaxHeight instead. '
	'This feature was deprecated after v3.7.0-5.0.pre.',
	)
	double? dataRowHeight,
	double? dataRowMinHeight,
	double? dataRowMaxHeight,
	TextStyle? dataTextStyle,
	MaterialStateProperty<Color?>? headingRowColor,
	double? headingRowHeight,
	TextStyle? headingTextStyle,
	double? horizontalMargin,
	double? columnSpacing,
	double? dividerThickness,
	double? checkboxHorizontalMargin,
	MaterialStateProperty<MouseCursor?>? headingCellCursor,
	MaterialStateProperty<MouseCursor?>? dataRowCursor,
	}) {
	assert(dataRowHeight == null \|\| (dataRowMinHeight == null && dataRowMaxHeight == null),
	'dataRowHeight ($dataRowHeight) must not be set if dataRowMinHeight ($dataRowMinHeight) or dataRowMaxHeight ($dataRowMaxHeight) are set.');
	dataRowMinHeight = dataRowHeight ?? dataRowMinHeight;
	dataRowMaxHeight = dataRowHeight ?? dataRowMaxHeight;

	return DataTableThemeData(
	decoration: decoration ?? this.decoration,
	dataRowColor: dataRowColor ?? this.dataRowColor,
	dataRowMinHeight: dataRowMinHeight ?? this.dataRowMinHeight,
	dataRowMaxHeight: dataRowMaxHeight ?? this.dataRowMaxHeight,
	dataTextStyle: dataTextStyle ?? this.dataTextStyle,
	headingRowColor: headingRowColor ?? this.headingRowColor,
	headingRowHeight: headingRowHeight ?? this.headingRowHeight,
	headingTextStyle: headingTextStyle ?? this.headingTextStyle,
	horizontalMargin: horizontalMargin ?? this.horizontalMargin,
	columnSpacing: columnSpacing ?? this.columnSpacing,
	dividerThickness: dividerThickness ?? this.dividerThickness,
	checkboxHorizontalMargin: checkboxHorizontalMargin ?? this.checkboxHorizontalMargin,
	headingCellCursor: headingCellCursor ?? this.headingCellCursor,
	dataRowCursor: dataRowCursor ?? this.dataRowCursor,
	);
	}

	/// Linearly interpolate between two [DataTableThemeData]s.
	///
	/// The argument `t` must not be null.
	///
	/// {@macro dart.ui.shadow.lerp}
	static DataTableThemeData lerp(DataTableThemeData a, DataTableThemeData b, double t) {
	if (identical(a, b)) {
	return a;
	}
	return DataTableThemeData(
	decoration: Decoration.lerp(a.decoration, b.decoration, t),
	dataRowColor: MaterialStateProperty.lerp<Color?>(a.dataRowColor, b.dataRowColor, t, Color.lerp),
	dataRowMinHeight: lerpDouble(a.dataRowMinHeight, b.dataRowMinHeight, t),
	dataRowMaxHeight: lerpDouble(a.dataRowMaxHeight, b.dataRowMaxHeight, t),
	dataTextStyle: TextStyle.lerp(a.dataTextStyle, b.dataTextStyle, t),
	headingRowColor: MaterialStateProperty.lerp<Color?>(a.headingRowColor, b.headingRowColor, t, Color.lerp),
	headingRowHeight: lerpDouble(a.headingRowHeight, b.headingRowHeight, t),
	headingTextStyle: TextStyle.lerp(a.headingTextStyle, b.headingTextStyle, t),
	horizontalMargin: lerpDouble(a.horizontalMargin, b.horizontalMargin, t),
	columnSpacing: lerpDouble(a.columnSpacing, b.columnSpacing, t),
	dividerThickness: lerpDouble(a.dividerThickness, b.dividerThickness, t),
	checkboxHorizontalMargin: lerpDouble(a.checkboxHorizontalMargin, b.checkboxHorizontalMargin, t),
	headingCellCursor: t < 0.5 ? a.headingCellCursor : b.headingCellCursor,
	dataRowCursor: t < 0.5 ? a.dataRowCursor : b.dataRowCursor,
	);
	}

	@override
	int get hashCode => Object.hash(
	decoration,
	dataRowColor,
	dataRowMinHeight,
	dataRowMaxHeight,
	dataTextStyle,
	headingRowColor,
	headingRowHeight,
	headingTextStyle,
	horizontalMargin,
	columnSpacing,
	dividerThickness,
	checkboxHorizontalMargin,
	headingCellCursor,
	dataRowCursor,
	);

	@override
	bool operator ==(Object other) {
	if (identical(this, other)) {
	return true;
	}
	if (other.runtimeType != runtimeType) {
	return false;
	}
	return other is DataTableThemeData
	&& other.decoration == decoration
	&& other.dataRowColor == dataRowColor
	&& other.dataRowMinHeight == dataRowMinHeight
	&& other.dataRowMaxHeight == dataRowMaxHeight
	&& other.dataTextStyle == dataTextStyle
	&& other.headingRowColor == headingRowColor
	&& other.headingRowHeight == headingRowHeight
	&& other.headingTextStyle == headingTextStyle
	&& other.horizontalMargin == horizontalMargin
	&& other.columnSpacing == columnSpacing
	&& other.dividerThickness == dividerThickness
	&& other.checkboxHorizontalMargin == checkboxHorizontalMargin
	&& other.headingCellCursor == headingCellCursor
	&& other.dataRowCursor == dataRowCursor;
	}

	@override
	void debugFillProperties(DiagnosticPropertiesBuilder properties) {
	super.debugFillProperties(properties);
	properties.add(DiagnosticsProperty<Decoration>('decoration', decoration, defaultValue: null));
	properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('dataRowColor', dataRowColor, defaultValue: null));
	properties.add(DoubleProperty('dataRowMinHeight', dataRowMinHeight, defaultValue: null));
	properties.add(DoubleProperty('dataRowMaxHeight', dataRowMaxHeight, defaultValue: null));
	properties.add(DiagnosticsProperty<TextStyle>('dataTextStyle', dataTextStyle, defaultValue: null));
	properties.add(DiagnosticsProperty<MaterialStateProperty<Color?>>('headingRowColor', headingRowColor, defaultValue: null));
	properties.add(DoubleProperty('headingRowHeight', headingRowHeight, defaultValue: null));
	properties.add(DiagnosticsProperty<TextStyle>('headingTextStyle', headingTextStyle, defaultValue: null));
	properties.add(DoubleProperty('horizontalMargin', horizontalMargin, defaultValue: null));
	properties.add(DoubleProperty('columnSpacing', columnSpacing, defaultValue: null));
	properties.add(DoubleProperty('dividerThickness', dividerThickness, defaultValue: null));
	properties.add(DoubleProperty('checkboxHorizontalMargin', checkboxHorizontalMargin, defaultValue: null));
	properties.add(DiagnosticsProperty<MaterialStateProperty<MouseCursor?>?>('headingCellCursor', headingCellCursor, defaultValue: null));
	properties.add(DiagnosticsProperty<MaterialStateProperty<MouseCursor?>?>('dataRowCursor', dataRowCursor, defaultValue: null));
	}
	}

	/// Applies a data table theme to descendant [DataTable] widgets.
	///
	/// Descendant widgets obtain the current theme's [DataTableTheme] object using
	/// [DataTableTheme.of]. When a widget uses [DataTableTheme.of], it is
	/// automatically rebuilt if the theme later changes.
	///
	/// A data table theme can be specified as part of the overall Material
	/// theme using [ThemeData.dataTableTheme].
	///
	/// See also:
	///
	/// * [DataTableThemeData], which describes the actual configuration
	/// of a data table theme.
	class DataTableTheme extends InheritedWidget {
	/// Constructs a data table theme that configures all descendant
	/// [DataTable] widgets.
	///
	/// The [data] must not be null.
	const DataTableTheme({
	super.key,
	required this.data,
	required super.child,
	});

	/// The properties used for all descendant [DataTable] widgets.
	final DataTableThemeData data;

	/// Returns the configuration [data] from the closest
	/// [DataTableTheme] ancestor. If there is no ancestor, it returns
	/// [ThemeData.dataTableTheme]. Applications can assume that the
	/// returned value will not be null.
	///
	/// Typical usage is as follows:
	///
	/// ```dart
	/// DataTableThemeData theme = DataTableTheme.of(context);
	/// ```
	static DataTableThemeData of(BuildContext context) {
	final DataTableTheme? dataTableTheme = context.dependOnInheritedWidgetOfExactType<DataTableTheme>();
	return dataTableTheme?.data ?? Theme.of(context).dataTableTheme;
	}

	@override
	bool updateShouldNotify(DataTableTheme oldWidget) => data != oldWidget.data;
	}