Copy value from one `Text` to another on

copy_text.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. 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';

class TextWidget extends StatefulWidget {
  _TextWidgetState createState() => _TextWidgetState();
}

class _TextWidgetState extends State<TextWidget> {
  String _text = "";
  @override
  Widget build(BuildContext context) {
    Text _textSource = Text(
      "Value to be copied",
      key: Key('text1')
    );
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _textSource,
            RaisedButton(
              onPressed: (){
                setState(() {
                  _text = _textSource.data;
                });
              },
              child: Text("Copy value"),
            ),
            SizedBox(height: 40),
            Text(
              _text,
              key: Key('text2')
            )
          ],
        ),
      ),
    );
  }
}

// End of the meaningful part



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: TextWidget(),
    );
  }
}