101 lines
2.7 KiB
Dart
101 lines
2.7 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_app/random_words_input.dart';
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import 'package:flutter_app/random_words_model.dart';
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import 'package:english_words/english_words.dart';
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class RandomWords extends StatefulWidget {
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final String stateKey;
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RandomWords(Key key, this.stateKey) :super(key: key);
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@override
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createState() => new RandomWordsState();
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}
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class RandomWordsState extends State<RandomWords> {
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RandomWordsModel model = new RandomWordsModel();
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RandomWordsInput input = new RandomWordsInput();
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final biggerFont = const TextStyle(fontSize: 18.0);
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final ScrollController scrollController = new ScrollController();
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RandomWordsState() {
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_init();
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}
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_init() async {
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RandomWordsModel newModel = await model.restore(widget.stateKey);
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RandomWordsInput newInput = await input.restore(widget.stateKey);
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setState(() {
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model = newModel;
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input = newInput;
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scrollController.jumpTo(input.scrollPosition);
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});
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}
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@override
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Widget build(BuildContext context) {
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return _buildSuggestions();
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}
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Widget _buildSuggestions() {
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return
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new NotificationListener(
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onNotification: _onNotification,
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child: new ListView.builder(
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padding: const EdgeInsets.all(16.0),
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controller: scrollController,
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itemBuilder: (context, i) {
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if (!model.isInitialized())
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return null;
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if (i.isOdd) return new Divider();
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final index = i ~/ 2;
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// If you've reached the end of the available word pairings...
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if (index >= model.suggestions.length) {
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// ...then generate 10 more and add them to the suggestions list.
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var newSuggestions = generateWordPairs().take(10);
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for (WordPair pair in newSuggestions) {
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model.suggestions.add(pair.asPascalCase);
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}
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model.save(widget.stateKey);
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}
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return _buildRow(model.suggestions[index]);
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}
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),);
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}
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_onNotification(Notification n) {
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input.scrollPosition = scrollController.position.pixels;
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input.save(widget.stateKey);
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}
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Widget _buildRow(String word) {
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final alreadySaved = model.saved.contains(word);
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return new ListTile(
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title: new Text(
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word,
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style: biggerFont,
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),
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trailing: new Icon(
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alreadySaved ? Icons.favorite : Icons.favorite_border,
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color: alreadySaved ? Colors.red : null,
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),
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onTap: () {
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setState(() {
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if (alreadySaved) {
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model.saved.remove(word);
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} else {
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model.saved.add(word);
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}
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});
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model.save(widget.stateKey);
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},
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);
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}
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} |