81 lines
2.7 KiB
Dart
81 lines
2.7 KiB
Dart
// Copyright (C) 2023 WYATT GROUP
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// Please see the AUTHORS file for details.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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import 'package:flutter/material.dart';
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import 'package:wyatt_ui_components/wyatt_ui_components.dart';
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/// {@template component_theme}
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/// A [ComponentTheme] widget that provides a [ComponentThemeData] to its
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/// descendants.
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/// {@endtemplate}
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class ComponentTheme extends StatelessWidget {
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/// {@macro component_theme}
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const ComponentTheme({
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required this.child,
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required this.data,
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super.key,
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});
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/// The [ComponentThemeData] of this widget.
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///
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/// This contains all components instances of the theme.
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final ComponentThemeData data;
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/// The widget below this widget in the tree.
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final Widget child;
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/// Returns the [ComponentThemeData] of the closest ancestor [ComponentTheme]
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/// widget. If there is no ancestor [ComponentTheme] widget, it throws an
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/// assertion error.
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static ComponentThemeData of(BuildContext context) {
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final _InheritedComponentTheme? inheritedThemeComponent =
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context.dependOnInheritedWidgetOfExactType<_InheritedComponentTheme>();
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assert(
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inheritedThemeComponent != null,
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'Theme component not find in tree',
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);
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return inheritedThemeComponent!.themeWidget.data;
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}
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/// Returns the [ComponentThemeData] of the closest ancestor [ComponentTheme]
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/// widget. If there is no ancestor [ComponentTheme] widget, it returns null.
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static ComponentThemeData? maybeOf(BuildContext context) {
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final _InheritedComponentTheme? inheritedThemeComponent =
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context.dependOnInheritedWidgetOfExactType<_InheritedComponentTheme>();
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return inheritedThemeComponent?.themeWidget.data;
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}
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@override
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Widget build(BuildContext context) => _InheritedComponentTheme(
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this,
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child: child,
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);
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}
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class _InheritedComponentTheme extends InheritedWidget {
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const _InheritedComponentTheme(
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this.themeWidget, {
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required super.child,
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});
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final ComponentTheme themeWidget;
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@override
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bool updateShouldNotify(covariant InheritedWidget oldWidget) =>
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oldWidget != this;
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}
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