// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Infinite Scrolling Flutter',
      home: Scaffold(
        appBar: AppBar(title: const Text('Infinite Scrolling ListView (Static Data)')),
        body: const InfiniteScrollList(),
      ),
    );
  }
}

class InfiniteScrollList extends StatefulWidget {
  const InfiniteScrollList({super.key});

  @override
  InfiniteScrollListState createState() => InfiniteScrollListState();
}

class InfiniteScrollListState extends State<InfiniteScrollList> {
  final List<String> items = [];
  final int itemsPerPage = 20;
  final List<String> staticData = [
    'Hello Flutter',
    'Hello Flutter',
    'Hello Flutter',
    'Hello Flutter',
    'Hello Flutter',
  ];

  @override
  void initState() {
    super.initState();
    _loadMoreData(); // Load initial data
  }

  void _loadMoreData() {
    setState(() {
      final List<String> newItems = List.generate(itemsPerPage, (int i) {
        return staticData[i % staticData.length];
      });
      items.addAll(newItems);
    });
  }

  @override
  Widget build(BuildContext context) {
    return NotificationListener<ScrollNotification>(
      onNotification: (ScrollNotification scrollInfo) {
        if (scrollInfo.metrics.pixels >= scrollInfo.metrics.maxScrollExtent - 50) {
          _loadMoreData();
          return true;
        }
        return false;
      },
      child: ListView.builder(
        itemCount: items.length,
        itemBuilder: (context, index) {
          return ListTile(title: Text(items[index]));
        },
      ),
    );
  }
}