Track containers 4: nested list views

main.dart

// Check that hitting the start/end of a child listview passes the scroll to the parent listview.
// Works as intended on laptop/dartpad with two-finger scroll on trackpad, but not with point and drag
import 'dart:math';
import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

  Widget _buildContainer(Color color, Color borderColor) => Container(
      height: 300.0,
      decoration: BoxDecoration(
          color: color, border: Border.all(color: borderColor, width: 8)),
      child: ListView(
          children: List.generate(
              25, (i) => Container(height: 30.0, child: Text('foo $i')))));

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('Fun with nested list view'),
        ),
        body: Column(children: [
          Container(
              color: Color(0x88888888),
              height: 600,
              child: ListView(children: [
                _buildContainer(Color(0x88FF0000), Color(0xFFFF0000)),
                _buildContainer(Color(0x8800FF00), Color(0xFF00FF00)),
                _buildContainer(Color(0x880000FF), Color(0xFF0000FF)),
              ]))
        ]));
  }
}