lab3 done
This commit is contained in:
parent
57c7532eb0
commit
c244105079
243
lib/main.dart
243
lib/main.dart
@ -22,14 +22,13 @@ class MyApp extends StatelessWidget {
|
||||
}
|
||||
}
|
||||
|
||||
// Enum для управления состоянием сообщений
|
||||
enum MessageType { noQuotes, newQuoteAdded }
|
||||
|
||||
// Модель цитаты
|
||||
class Quote {
|
||||
final String text;
|
||||
final String author;
|
||||
Quote(this.text, this.author);
|
||||
final String imagePath;
|
||||
|
||||
Quote(this.text, this.author, this.imagePath);
|
||||
}
|
||||
|
||||
// Главный экран
|
||||
@ -42,39 +41,117 @@ class MyHomePage extends StatefulWidget {
|
||||
}
|
||||
|
||||
class _MyHomePageState extends State<MyHomePage> {
|
||||
final TextEditingController quoteTextController = TextEditingController();
|
||||
final TextEditingController quoteAuthorController = TextEditingController();
|
||||
|
||||
final List<Quote> _quotes = [];
|
||||
MessageType _messageType = MessageType.noQuotes;
|
||||
final String defaultImagePath =
|
||||
'https://cdn-icons-png.flaticon.com/128/17818/17818874.png';
|
||||
|
||||
// Метод добавления цитаты
|
||||
Future<void> _addQuote() async {
|
||||
final result = await showDialog<Map<String, String>?>(
|
||||
context: context,
|
||||
builder: (BuildContext context) => const AddQuoteDialog(),
|
||||
);
|
||||
@override
|
||||
void initState() {
|
||||
super.initState();
|
||||
|
||||
if (result != null && result['quote'] != '' && result['author'] != '') {
|
||||
setState(() {
|
||||
_quotes.add(
|
||||
Quote(result['quote']!.addQuotesIfMissing(), result['author']!.capitalize()),
|
||||
);
|
||||
_messageType = MessageType.newQuoteAdded;
|
||||
});
|
||||
}
|
||||
// Тестовые цитаты
|
||||
_quotes.add(Quote(
|
||||
'Сила воли — это ключ к успеху.',
|
||||
'Аноним',
|
||||
'https://cdn-icons-png.flaticon.com/128/17818/17818880.png',
|
||||
));
|
||||
_quotes.add(Quote(
|
||||
'Вера в себя — это первый шаг к победе.',
|
||||
'Аноним',
|
||||
'https://cdn-icons-png.flaticon.com/128/17818/17818889.png',
|
||||
));
|
||||
_quotes.add(Quote(
|
||||
'Не бойся быть отличным, бойся быть обычным.',
|
||||
'Аноним',
|
||||
'https://cdn-icons-png.flaticon.com/128/17818/17818899.png',
|
||||
));
|
||||
}
|
||||
|
||||
void _addQuote() {
|
||||
setState(() {
|
||||
final newQuote = Quote(
|
||||
quoteTextController.text.addQuotesIfMissing().capitalize(),
|
||||
quoteAuthorController.text.capitalize(),
|
||||
defaultImagePath, // Устанавливаем дефолтное изображение
|
||||
);
|
||||
_quotes.add(newQuote);
|
||||
quoteTextController.clear();
|
||||
quoteAuthorController.clear();
|
||||
});
|
||||
}
|
||||
|
||||
void _removeQuote(int index) {
|
||||
setState(() {
|
||||
_quotes.removeAt(index);
|
||||
});
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Scaffold(
|
||||
appBar: AppBar(
|
||||
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
|
||||
title: Text(widget.title),
|
||||
title: const Text('Цитаты'),
|
||||
backgroundColor: Theme.of(context).colorScheme.primaryContainer,
|
||||
foregroundColor: Theme.of(context).colorScheme.onPrimaryContainer,
|
||||
),
|
||||
body: Stack(
|
||||
children: [
|
||||
Center(
|
||||
child: _messageType == MessageType.noQuotes
|
||||
? const NoQuotesMessage()
|
||||
: QuoteList(quotes: _quotes),
|
||||
Column(
|
||||
children: [
|
||||
const Padding(
|
||||
padding: EdgeInsets.all(16.0),
|
||||
child: Text(
|
||||
'Список цитат',
|
||||
style: TextStyle(fontSize: 20, fontWeight: FontWeight.normal),
|
||||
),
|
||||
),
|
||||
Expanded(
|
||||
child: _quotes.isEmpty
|
||||
? const Center(
|
||||
child: Text(
|
||||
'Нет добавленных цитат. Добавьте первую!',
|
||||
style: TextStyle(fontSize: 18, color: Colors.grey),
|
||||
),
|
||||
)
|
||||
: ListView.builder(
|
||||
itemCount: _quotes.length,
|
||||
itemBuilder: (context, index) {
|
||||
final quote = _quotes[index];
|
||||
return Card(
|
||||
margin: const EdgeInsets.symmetric(
|
||||
vertical: 8.0,
|
||||
horizontal: 10.0,
|
||||
),
|
||||
child: ListTile(
|
||||
contentPadding: const EdgeInsets.all(8.0),
|
||||
leading: SizedBox(
|
||||
width: 50.0,
|
||||
child: Image.network(
|
||||
quote.imagePath,
|
||||
fit: BoxFit.cover,
|
||||
errorBuilder: (_, __, ___) =>
|
||||
const Icon(Icons.error, color: Colors.red),
|
||||
),
|
||||
),
|
||||
title: Text(
|
||||
quote.text,
|
||||
style: const TextStyle(
|
||||
fontSize: 18, fontWeight: FontWeight.w500),
|
||||
),
|
||||
subtitle: Text('- ${quote.author}'),
|
||||
trailing: IconButton(
|
||||
icon: const Icon(Icons.delete),
|
||||
onPressed: () => _removeQuote(index),
|
||||
),
|
||||
),
|
||||
);
|
||||
},
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
Align(
|
||||
alignment: Alignment.bottomCenter,
|
||||
@ -83,7 +160,43 @@ class _MyHomePageState extends State<MyHomePage> {
|
||||
],
|
||||
),
|
||||
floatingActionButton: FloatingActionButton(
|
||||
onPressed: _addQuote,
|
||||
onPressed: () {
|
||||
showDialog(
|
||||
context: context,
|
||||
builder: (context) {
|
||||
return AlertDialog(
|
||||
title: const Text('Новая цитата'),
|
||||
content: Column(
|
||||
mainAxisSize: MainAxisSize.min,
|
||||
children: [
|
||||
TextField(
|
||||
controller: quoteTextController,
|
||||
decoration: const InputDecoration(
|
||||
hintText: 'Введите текст цитаты',
|
||||
),
|
||||
),
|
||||
const SizedBox(height: 8),
|
||||
TextField(
|
||||
controller: quoteAuthorController,
|
||||
decoration: const InputDecoration(
|
||||
hintText: 'Введите автора цитаты',
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
actions: [
|
||||
TextButton(
|
||||
onPressed: () {
|
||||
_addQuote();
|
||||
Navigator.of(context).pop();
|
||||
},
|
||||
child: const Text('Добавить'),
|
||||
),
|
||||
],
|
||||
);
|
||||
},
|
||||
);
|
||||
},
|
||||
tooltip: 'Добавить цитату',
|
||||
child: const Icon(Icons.format_quote),
|
||||
),
|
||||
@ -91,42 +204,6 @@ class _MyHomePageState extends State<MyHomePage> {
|
||||
}
|
||||
}
|
||||
|
||||
// Виджет списка цитат
|
||||
class QuoteList extends StatelessWidget {
|
||||
final List<Quote> quotes;
|
||||
const QuoteList({super.key, required this.quotes});
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return ListView.builder(
|
||||
itemCount: quotes.length,
|
||||
itemBuilder: (context, index) {
|
||||
return ListTile(
|
||||
title: Text(
|
||||
quotes[index].text,
|
||||
style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w500),
|
||||
),
|
||||
subtitle: Text('- ${quotes[index].author}'),
|
||||
);
|
||||
},
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// Виджет сообщения "нет цитат"
|
||||
class NoQuotesMessage extends StatelessWidget {
|
||||
const NoQuotesMessage({super.key});
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return const Text(
|
||||
'Нет добавленных цитат. Добавь первую!',
|
||||
textAlign: TextAlign.center,
|
||||
style: TextStyle(fontSize: 18, color: Colors.grey),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// Виджет счетчика цитат
|
||||
class QuoteCounter extends StatelessWidget {
|
||||
final int count;
|
||||
@ -135,7 +212,7 @@ class QuoteCounter extends StatelessWidget {
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Padding(
|
||||
padding: const EdgeInsets.all(30.0),
|
||||
padding: const EdgeInsets.all(16.0),
|
||||
child: Container(
|
||||
padding: const EdgeInsets.symmetric(vertical: 5, horizontal: 10),
|
||||
decoration: BoxDecoration(
|
||||
@ -148,50 +225,14 @@ class QuoteCounter extends StatelessWidget {
|
||||
),
|
||||
child: Text(
|
||||
'Количество цитат: $count',
|
||||
style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: Colors.black),
|
||||
style: const TextStyle(
|
||||
fontSize: 16, fontWeight: FontWeight.w600, color: Colors.black),
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// Диалоговое окно добавления цитаты
|
||||
class AddQuoteDialog extends StatelessWidget {
|
||||
const AddQuoteDialog({super.key});
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
final TextEditingController quoteController = TextEditingController();
|
||||
final TextEditingController authorController = TextEditingController();
|
||||
|
||||
return AlertDialog(
|
||||
title: const Text('Добавить цитату'),
|
||||
content: Column(
|
||||
mainAxisSize: MainAxisSize.min,
|
||||
children: [
|
||||
TextField(
|
||||
controller: quoteController,
|
||||
decoration: const InputDecoration(labelText: 'Цитата'),
|
||||
),
|
||||
TextField(
|
||||
controller: authorController,
|
||||
decoration: const InputDecoration(labelText: 'Автор'),
|
||||
),
|
||||
],
|
||||
),
|
||||
actions: [
|
||||
TextButton(
|
||||
onPressed: () => Navigator.of(context).pop({
|
||||
'quote': quoteController.text,
|
||||
'author': authorController.text,
|
||||
}),
|
||||
child: const Text('Добавить'),
|
||||
),
|
||||
],
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// Расширение для форматирования текста
|
||||
extension StringExtension on String {
|
||||
String capitalize() {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user