flutter_login_widget/lib/plugins/login/login_widget.dart

import 'package:flutter/material.dart';
import 'package:flutter_login/flutter_login_view.dart';
import '../../extensions/widget.dart';

abstract class Login extends StatefulWidget {
  const Login({
    required this.allowExit,
    this.child,
    super.key,
  });
  final Widget? child;
  final bool allowExit;

  @override
  LoginState createState();
}

abstract class LoginState<L extends Login> extends State<L>
    with NavigateWidgetMixin {
  void navigateToEmailPageReplace(
    BuildContext context, {
    String? email,
    String? password,
  }) {
    navigateFadeToReplace(
      context,
      (_) => EmailPasswordLogin(
        emailsave: email,
        passwordsave: password,
        child: widget.child,
      ),
      popRemaining: true,
    );
  }

  @override
  Widget build(BuildContext context) => Scaffold(
        backgroundColor: Theme.of(context).backgroundColor,
        body: SizedBox(
          height: MediaQuery.of(context).size.height,
          child: Stack(
            children: [
              SingleChildScrollView(
                child: buildLoginPage(context),
              ),
              if (widget.allowExit) ...[
                Align(
                  alignment: Alignment.topRight,
                  child: Padding(
                    padding: const EdgeInsets.only(top: 30, right: 10),
                    child: SizedBox(
                      height: 48,
                      width: 48,
                      child: GestureDetector(
                        key: const Key('navigateToSettings'),
                        child: const Icon(
                          Icons.close,
                          size: 24,
                        ),
                        onTap: () {
                          Navigator.of(context).pop();
                        },
                      ),
                    ),
                  ),
                ),
              ],
            ],
          ),
        ),
      );

  Widget buildLoginPage(BuildContext context);
}