showCommonDialog

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Dialog Demo',
      theme: ThemeData(
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: const CommonDialogCatalogScreen(),
    );
  }
}

class CommonDialogCatalogScreen extends StatelessWidget {
  const CommonDialogCatalogScreen({super.key});

  Future<void> showCustomContentDialog(BuildContext context) async {
    await showCommonDialog<void>(
      context: context,
      builder: (context) => const Padding(
        padding: EdgeInsets.all(24),
        child: Text('Custom Content'),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('CustomContentDialog Demo'),
      ),
      body: ListView(
        padding: const EdgeInsets.all(8),
        children: <Widget>[
          ElevatedButton(
            onPressed: () => showCustomContentDialog(context),
            child: const Text('Show Custom Content Dialog'),
          ),
        ],
      ),
    );
  }
}

Future<T?> showCommonDialog<T>({
  required BuildContext context,
  required WidgetBuilder builder,
  bool barrierDismissible = true,
  Color? barrierColor,
  bool useRootNavigator = true,
  Color? backgroundColor,
  Clip clipBehavior = Clip.none,
  Alignment alignment = Alignment.center,
  EdgeInsets? insetPadding,
  double elevation = 0,
}) {
  return showDialog<T>(
    context: context,
    barrierDismissible: barrierDismissible,
    barrierColor: barrierColor,
    useRootNavigator: useRootNavigator,
    builder: (context) => Dialog(
      backgroundColor:
          backgroundColor ?? Theme.of(context).dialogBackgroundColor,
      clipBehavior: clipBehavior,
      insetPadding: insetPadding,
      alignment: alignment,
      elevation: elevation,
      child: builder(context),
    ),
  );
}