softplayer-web/lib/components/menubar.dart

// This project is not supposed to be cross-platform, 
// so we don't care about this warning
// ignore: avoid_web_libraries_in_flutter
import 'dart:html';

import 'package:flutter/material.dart';
import 'package:softplayer_web/components/sign_in_form.dart';

class MenuPanel extends StatefulWidget implements PreferredSizeWidget {
  final TabName tab;
  const MenuPanel({super.key, required this.tab})
      : preferredSize = const Size.fromHeight(kToolbarHeight);
  @override
  final Size preferredSize;
  @override
  State<StatefulWidget> createState() => _MenuPanel();
}

enum TabName { home, catalog, about }

class _MenuPanel extends State<MenuPanel> {
  bool isSignedIn() {
    return window.localStorage.containsKey("token");
  }

  List<Widget> accountActions() {
    if (isSignedIn()) {
      return [
        IconButton(
            onPressed: () => print("acc"),
            icon: const Icon(Icons.account_circle))
      ];
    } else {
      return <Widget>[
        TextButton(
            onPressed: () {
              showDialog(
                  context: context,
                  builder: (BuildContext context) => const SignInForm());
            },
            child: const Text("sign in")),
        TextButton(
            onPressed: () => print("sign up"), child: const Text("sign up")),
      ];
    }
  }

  final String linkCatalog = "catalog";
  final String linkAbout = "about";
  final String linkHome = "home";
  @override
  PreferredSizeWidget build(BuildContext context) {
    final TabName tab = widget.tab;
    return AppBar(
      title: Row(children: [
        TextButton(
            child: const Text("Softplayer"),
            onPressed: () {
              Navigator.pushNamed(context, "/");
            }),
        TextButton(
            child: Text(
              linkHome,
              style: (tab == TabName.home)
                  ? const TextStyle(decoration: TextDecoration.underline)
                  : const TextStyle(),
            ),
            onPressed: () {
              Navigator.pushNamed(context, "/");
            }),
        TextButton(
            child: Text(
              linkCatalog,
              style: (tab == TabName.catalog)
                  ? const TextStyle(decoration: TextDecoration.underline)
                  : const TextStyle(),
            ),
            onPressed: () {
              Navigator.pushNamed(context, "/catalog");
            }),
        TextButton(
            child: Text(
              linkAbout,
              style: (tab == TabName.about)
                  ? const TextStyle(decoration: TextDecoration.underline)
                  : const TextStyle(),
            ),
            onPressed: () {
              Navigator.pushNamed(context, "/about");
            }),
      ]),
      backgroundColor: Colors.cyan,
      automaticallyImplyLeading: false,
      actions: accountActions(),
    );
  }
}