import 'package:flutter/material.dart';
import 'package:collection/collection.dart';

abstract interface class InheritedSettingsData {}

class InheritedSettings extends InheritedWidget {
  
  final List<InheritedSettingsData> settings;
  
  const InheritedSettings({
    super.key,
    required super.child,
    required this.settings,
  });

  static T? maybeSettingsOf<T extends InheritedSettingsData>(BuildContext context) {
    final settings = context.dependOnInheritedWidgetOfExactType<InheritedSettings>()?.settings;
    return (settings?.firstWhereOrNull((s) => s is T) as T?);
  }

  static T settingsOf<T extends InheritedSettingsData>(BuildContext context, T defaultSettings) {
    return maybeSettingsOf<T>(context) ?? defaultSettings;
  }

  static List<InheritedSettingsData>? maybeOf(BuildContext context) {
    return context.dependOnInheritedWidgetOfExactType<InheritedSettings>()?.settings;
  }

  static List<InheritedSettingsData> of(BuildContext context) {
    final List<InheritedSettingsData>? result = maybeOf(context);
    assert(result != null, 'No InheritedSettings found in context');
    return result!;
  }

  @override
  bool updateShouldNotify(InheritedSettings oldWidget) => settings != oldWidget.settings;
  
}

// ---

class ActionButtonSettings implements InheritedSettingsData {
  
  static ActionButtonSettings defaultSettings = ActionButtonSettings(
    builder: (context, child, onPressed) => ElevatedButton(
      onPressed: onPressed,
      child: child,
    ),
  );
  
  final Widget Function(BuildContext context, Widget child, VoidCallback? onPressed) builder;
  
  ActionButtonSettings({
    required this.builder,
  });
  
}

// ---

class ActionButton extends StatelessWidget {
  
  final Widget child;
  final VoidCallback? onPressed;

  const ActionButton({
    required this.child,
    required this.onPressed,
  });
  
  @override
  Widget build(BuildContext context) {
    // final settings = InheritedSettings.maybeSettingsOf<ActionButtonSettings>(context) ?? ActionButtonSettings.defaultSettings;
    final settings = InheritedSettings.settingsOf<ActionButtonSettings>(context, ActionButtonSettings.defaultSettings);
    return ConstrainedBox(
      constraints: const BoxConstraints(
        minWidth: 200,
      ),
      child: settings.builder(
        context,
        child,
        onPressed,
      ),
    );
  }
  
}

// ---

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.light(),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              InheritedSettings(
                settings: [
                  ActionButtonSettings(
                    builder: (context, child, onPressed) => OutlinedButton(
                      onPressed: onPressed,
                      child: child,
                    ),
                  ),                  
                ],
                child: MyWidget(),
              ),
              
              //
              const Divider(),
              
              //
              MyWidget(),
            ],
          ),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ActionButton(
      onPressed: () {},
      child: const Text('OK'),
    );
  }
}