92 lines
2.5 KiB
Dart
92 lines
2.5 KiB
Dart
// Copyright 2018 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:english_words/english_words.dart';
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import 'package:flutter/material.dart';
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void main() {
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runApp(const MyApp());
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}
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// #docregion MyApp
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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// #docregion build
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: 'Startup Name Generator',
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home: Scaffold(
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appBar: AppBar(
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title: const Text('Startup Name Generator'),
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),
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body: const Center(
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child: RandomWords(),
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),
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),
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);
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}
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// #enddocregion build
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}
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// #enddocregion MyApp
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// #docregion RWS-var
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class _RandomWordsState extends State<RandomWords> {
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final _suggestions = <WordPair>[];
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final _saved = <WordPair>{}; // NEW
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final _biggerFont = const TextStyle(fontSize: 36);
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// #enddocregion RWS-var
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// #docregion RWS-build
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@override
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Widget build(BuildContext context) {
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// #docregion itemBuilder
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return ListView.builder(
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padding: const EdgeInsets.all(16.0),
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itemBuilder: /*1*/ (context, i) {
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if (i.isOdd) return const Divider(); /*2*/
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final index = i ~/ 2; /*3*/
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if (index >= _suggestions.length) {
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_suggestions.addAll(generateWordPairs().take(10)); /*4*/
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}
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final alreadySaved = _saved.contains(_suggestions[index]); // NEW
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// #docregion listTile
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return ListTile(
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title: Text(
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_suggestions[index].asPascalCase,
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style: _biggerFont,
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),
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trailing: Icon( // NEW from here ...
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alreadySaved ? Icons.favorite : Icons.favorite_border,
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color: alreadySaved ? Colors.red : null,
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semanticLabel: alreadySaved ? 'Remove from saved' : 'Save',
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),
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onTap: () { // NEW from here ...
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setState(() {
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if (alreadySaved) {
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_saved.remove(_suggestions[index]);
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} else {
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_saved.add(_suggestions[index]);
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}
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});
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});
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// #enddocregion listTile
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},
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);
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// #enddocregion itemBuilder
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}
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// #enddocregion RWS-build
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// #docregion RWS-var
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}
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// #enddocregion RWS-var
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class RandomWords extends StatefulWidget {
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const RandomWords({super.key});
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@override
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State<RandomWords> createState() => _RandomWordsState();
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}
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