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6dd929ab28
This PR is to make preparations to make `DialogTheme` conform to Flutter's conventions for component themes: * Added a `DialogThemeData` class which defines overrides for the defaults for `Dialog` properties. * Added 2 `DialogTheme` constructor parameters: `DialogThemeData? data` and `Widget? child`. This is now the preferred way to configure a `DialogTheme`: ``` DialogTheme( data: DialogThemeData(color: xxx, elevation: xxx, ...), child: Dialog(...) ) ``` These two properties are made nullable to not break existing apps which has customized `ThemeData.dialogTheme`. * Changed the type of theme defaults from `DialogTheme` to `DialogThemeData`. TODO: * Fix internal failures. * Change the type of `ThemeData.dialogTheme` from `DialogTheme` to `DialogThemeData`. This may cause breaking changes, a migration guide will be created. Addresses the "theme normalization" sub project within https://github.com/flutter/flutter/issues/91772
67 lines
2.0 KiB
Dart
67 lines
2.0 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'template.dart';
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class DialogTemplate extends TokenTemplate {
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const DialogTemplate(super.blockName, super.fileName, super.tokens, {
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super.colorSchemePrefix = '_colors.',
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super.textThemePrefix = '_textTheme.'
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});
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@override
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String generate() => '''
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class _${blockName}DefaultsM3 extends DialogThemeData {
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_${blockName}DefaultsM3(this.context)
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: super(
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alignment: Alignment.center,
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elevation: ${elevation("md.comp.dialog.container")},
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shape: ${shape("md.comp.dialog.container")},
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clipBehavior: Clip.none,
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);
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final BuildContext context;
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late final ColorScheme _colors = Theme.of(context).colorScheme;
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late final TextTheme _textTheme = Theme.of(context).textTheme;
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@override
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Color? get iconColor => _colors.secondary;
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@override
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Color? get backgroundColor => ${componentColor("md.comp.dialog.container")};
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@override
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Color? get shadowColor => ${colorOrTransparent("md.comp.dialog.container.shadow-color")};
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@override
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Color? get surfaceTintColor => ${colorOrTransparent("md.comp.dialog.container.surface-tint-layer.color")};
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@override
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TextStyle? get titleTextStyle => ${textStyle("md.comp.dialog.headline")};
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@override
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TextStyle? get contentTextStyle => ${textStyle("md.comp.dialog.supporting-text")};
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@override
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EdgeInsetsGeometry? get actionsPadding => const EdgeInsets.only(left: 24.0, right: 24.0, bottom: 24.0);
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}
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''';
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}
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class DialogFullscreenTemplate extends TokenTemplate {
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const DialogFullscreenTemplate(super.blockName, super.fileName, super.tokens);
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@override
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String generate() => '''
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class _${blockName}DefaultsM3 extends DialogThemeData {
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const _${blockName}DefaultsM3(this.context): super(clipBehavior: Clip.none);
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final BuildContext context;
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@override
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Color? get backgroundColor => ${componentColor("md.comp.full-screen-dialog.container")};
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}
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''';
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}
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