import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const TestPage(),
    );
  }
}

class TestPage extends StatelessWidget {
  const TestPage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    const text = """
  START THE SELECTION HERE
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
   This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
 This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
 This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
   This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  This widget is the home page of your application. It is stateful, meaning
  that it has a State object (defined below) that contains fields that affect
  how it looks.
  This class is the configuration for the state. It holds the values (in this
  case the title) provided by the parent (in this case the App widget) and
  used by the build method of the State. Fields in a Widget subclass are
  always marked final.
  END THE SELECTION HERE
  """;

    const itemCount = 500;

    return Scaffold(
      body: Scrollbar(
        child: ListView.builder(
          itemCount: itemCount,
          itemBuilder: (context, index) {
            if (index < itemCount - 1) {
              return const Text("Example\n simple\n text");
            }
            return const SelectableText(text);
          },
        ),
      ),
    );
  }
}

Analyzing selectable_text...
No issues found! (ran in 1.3s)

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