info_tren/lib/pages/main/main_page_material.dart

import 'package:flutter/material.dart';
import 'package:info_tren/pages/main/main_page.dart';

class MainPageMaterial extends MainPageShared {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(pageTitle),
        centerTitle: true,
        actions: [
          PopupMenuButton<int>(
            icon: const Icon(Icons.more_vert),
            tooltip: moreOptionsText,
            itemBuilder: (_) => popupMenu.asMap().entries.map((e) => PopupMenuItem(
              value: e.key,
              child: Text(e.value.name),
            )).toList(),
            onSelected: (index) {
              popupMenu[index].action?.call(context);
            },
          ),
        ],
      ),
      body: SafeArea(
        child: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: options.map((option) => Card(
              color: option.action != null ? Theme.of(context).colorScheme.secondaryContainer : null,
              child: InkWell(
                onTap: option.action != null ? () => option.action!(context) : null,
                child: Column(
                  children: [
                    Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Text(
                        option.name,
                        style: Theme.of(context).textTheme.headlineMedium?.copyWith(
                          color: Theme.of(context).colorScheme.onSecondaryContainer,
                        ),
                        textAlign: TextAlign.center,
                      ),
                    ),
                    Padding(
                      padding: const EdgeInsets.all(8.0),
                      child: Text(option.description!),
                    ),
                  ],
                ),
              ),
            )).map((w) => Padding(
              padding: const EdgeInsets.fromLTRB(4, 2, 4, 2),
              child: SizedBox(
                width: double.infinity,
                child: w,
              ),
            )).toList(),
          ),
        ),
      ),
    );
  }
}