✨ News reader
This commit is contained in:
@ -1,11 +1,19 @@
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import 'package:easy_localization/easy_localization.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:gap/gap.dart';
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import 'package:html/dom.dart' as dom;
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import 'package:html/parser.dart';
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import 'package:provider/provider.dart';
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import 'package:relative_time/relative_time.dart';
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import 'package:styled_widget/styled_widget.dart';
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import 'package:surface/providers/sn_network.dart';
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import 'package:surface/types/news.dart';
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import 'package:surface/widgets/dialog.dart';
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import 'package:surface/widgets/navigation/app_scaffold.dart';
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import 'package:flutter_inappwebview/flutter_inappwebview.dart';
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import 'package:surface/widgets/universal_image.dart';
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import 'package:url_launcher/url_launcher_string.dart';
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class NewsDetailScreen extends StatefulWidget {
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final String hash;
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@ -18,12 +26,14 @@ class NewsDetailScreen extends StatefulWidget {
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class _NewsDetailScreenState extends State<NewsDetailScreen> {
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SnNewsArticle? _article;
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dom.Document? _articleFragment;
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Future<void> _fetchArticle() async {
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try {
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final sn = context.read<SnNetworkProvider>();
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final resp = await sn.client.get('/cgi/re/news/${widget.hash}');
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_article = SnNewsArticle.fromJson(resp.data);
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_articleFragment = parse(_article!.content);
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} catch (err) {
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if (!mounted) return;
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context.showErrorDialog(err).then((_) {
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@ -35,6 +45,96 @@ class _NewsDetailScreenState extends State<NewsDetailScreen> {
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}
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}
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List<Widget> _parseHtmlToWidgets(Iterable<dom.Element>? elements) {
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if (elements == null) return [];
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final List<Widget> widgets = [];
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for (final node in elements) {
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switch (node.localName) {
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case 'h1':
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case 'h2':
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case 'h3':
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case 'h4':
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case 'h5':
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case 'h6':
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widgets.add(Text(node.text.trim(), style: Theme.of(context).textTheme.titleMedium));
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break;
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case 'p':
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if (node.text.trim().isEmpty) continue;
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widgets.add(
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Text.rich(
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TextSpan(
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text: node.text.trim(),
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children: [
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for (final child in node.children)
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switch (child.localName) {
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'a' => TextSpan(
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text: child.text.trim(),
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style: const TextStyle(decoration: TextDecoration.underline),
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recognizer: TapGestureRecognizer()
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..onTap = () {
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launchUrlString(child.attributes['href']!);
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},
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),
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_ => TextSpan(text: child.text.trim()),
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},
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],
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),
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style: Theme.of(context).textTheme.bodyLarge,
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),
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);
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break;
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case 'a':
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// drop single link
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break;
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case 'div':
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// ignore div text, normally it is not meaningful
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widgets.addAll(_parseHtmlToWidgets(node.children));
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break;
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case 'hr':
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widgets.add(const Divider());
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break;
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case 'img':
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var src = node.attributes['src'];
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if (src == null) break;
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final width = double.tryParse(node.attributes['width'] ?? 'null');
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final height = double.tryParse(node.attributes['height'] ?? 'null');
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final ratio = width != null && height != null ? width / height : 1.0;
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if (!src.startsWith('http')) {
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final baseUri = Uri.parse(_article!.url);
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final baseUrl = '${baseUri.scheme}://${baseUri.host}';
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src = '$baseUrl/$src';
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}
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widgets.add(
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AspectRatio(
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aspectRatio: ratio,
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child: Container(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.all(Radius.circular(8)),
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border: Border.all(
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color: Theme.of(context).dividerColor,
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width: 1,
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),
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),
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height: height ?? double.infinity,
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child: ClipRRect(
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borderRadius: BorderRadius.all(Radius.circular(8)),
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child: AutoResizeUniversalImage(src, fit: BoxFit.cover),
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),
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),
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),
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);
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break;
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default:
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widgets.addAll(_parseHtmlToWidgets(node.children));
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break;
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}
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}
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return widgets;
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}
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@override
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void initState() {
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super.initState();
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@ -43,27 +143,6 @@ class _NewsDetailScreenState extends State<NewsDetailScreen> {
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bool _isReadingFromReader = true;
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String get _htmlContent => """
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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body {
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background-color: #000000;
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color: #fff;
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font-family: Arial, sans-serif;
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padding: 20px;
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}
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</style>
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</head>
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<body>
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${_article?.content ?? ''}
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</body>
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</html>
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""";
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InAppWebViewController? _webViewController;
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@override
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Widget build(BuildContext context) {
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return AppScaffold(
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@ -82,30 +161,68 @@ class _NewsDetailScreenState extends State<NewsDetailScreen> {
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child: Text('newsReadingProviderSwap').tr(),
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onPressed: () {
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setState(() => _isReadingFromReader = !_isReadingFromReader);
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if (!_isReadingFromReader) {
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_webViewController?.goTo(historyItem: WebHistoryItem(url: WebUri(_article!.url)));
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} else {
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_webViewController?.goBack();
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}
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},
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),
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],
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),
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Expanded(
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child: InAppWebView(
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key: Key('news-detail-webview-${widget.hash}-$_isReadingFromReader'),
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onWebViewCreated: (controller) {
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_webViewController = controller;
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},
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initialUrlRequest: URLRequest(url: WebUri(_article!.url)),
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onLoadStop: (controller, url) {
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print("Loaded: $url");
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},
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onLoadError: (controller, url, code, message) {
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print("Error loading $url: $message ($code)");
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},
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if (_articleFragment != null && _isReadingFromReader)
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Expanded(
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child: SingleChildScrollView(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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spacing: 8,
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children: [
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Text(_article!.title, style: Theme.of(context).textTheme.titleLarge),
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Builder(builder: (context) {
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final htmlDescription = parse(_article!.description);
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return Text(
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htmlDescription.children.map((ele) => ele.text.trim()).join(),
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style: Theme.of(context).textTheme.bodyMedium,
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);
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}),
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Builder(builder: (context) {
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final date = _article!.publishedAt ?? _article!.createdAt;
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return Row(
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spacing: 2,
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children: [
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Text(DateFormat().format(date)).textStyle(Theme.of(context).textTheme.bodySmall!),
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Text(' · ').textStyle(Theme.of(context).textTheme.bodySmall!).bold(),
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Text(RelativeTime(context).format(date)).textStyle(Theme.of(context).textTheme.bodySmall!),
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],
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).opacity(0.75);
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}),
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Text('newsDisclaimer').tr().textStyle(Theme.of(context).textTheme.bodySmall!).opacity(0.75),
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const Divider(),
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..._parseHtmlToWidgets(_articleFragment!.children),
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const Divider(),
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InkWell(
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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'Reference from original website',
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style: TextStyle(decoration: TextDecoration.underline),
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),
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const Gap(4),
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Icon(Icons.launch, size: 16),
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],
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).opacity(0.85),
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onTap: () {
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launchUrlString(_article!.url);
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},
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),
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Gap(MediaQuery.of(context).padding.bottom),
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],
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).padding(horizontal: 12, vertical: 16),
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),
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)
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else if (_article != null)
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Expanded(
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child: InAppWebView(
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key: GlobalKey(),
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initialUrlRequest: URLRequest(url: WebUri(_article!.url)),
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),
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),
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),
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],
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),
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);
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@ -2,7 +2,9 @@ import 'package:easy_localization/easy_localization.dart';
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import 'package:flutter/material.dart';
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import 'package:gap/gap.dart';
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import 'package:go_router/go_router.dart';
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import 'package:html/parser.dart';
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import 'package:provider/provider.dart';
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import 'package:relative_time/relative_time.dart';
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import 'package:styled_widget/styled_widget.dart';
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import 'package:surface/providers/sn_network.dart';
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import 'package:surface/types/news.dart';
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@ -81,8 +83,12 @@ class _NewsScreenState extends State<NewsScreen> {
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},
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body: TabBarView(
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children: [
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_NewsArticleListWidget(),
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for (final source in _sources!) _NewsArticleListWidget(source: source.id),
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_NewsArticleListWidget(allSources: _sources!),
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for (final source in _sources!)
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_NewsArticleListWidget(
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source: source.id,
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allSources: _sources!,
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),
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],
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),
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),
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@ -93,8 +99,9 @@ class _NewsScreenState extends State<NewsScreen> {
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class _NewsArticleListWidget extends StatefulWidget {
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final String? source;
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final List<SnNewsSource> allSources;
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const _NewsArticleListWidget({this.source});
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const _NewsArticleListWidget({this.source, required this.allSources});
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@override
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State<_NewsArticleListWidget> createState() => _NewsArticleListWidgetState();
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@ -154,6 +161,9 @@ class _NewsArticleListWidgetState extends State<_NewsArticleListWidget> {
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final baseUri = Uri.parse(article.url);
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final baseUrl = '${baseUri.scheme}://${baseUri.host}';
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final htmlDescription = parse(article.description);
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final date = article.publishedAt ?? article.createdAt;
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return Card(
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child: InkWell(
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radius: 8,
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@ -164,21 +174,43 @@ class _NewsArticleListWidgetState extends State<_NewsArticleListWidget> {
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);
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},
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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if (article.thumbnail.isNotEmpty && !article.thumbnail.endsWith('.svg'))
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ClipRRect(
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borderRadius: BorderRadius.all(Radius.circular(8)),
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child: AspectRatio(
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aspectRatio: 16 / 9,
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child: AutoResizeUniversalImage('$baseUrl/${article.thumbnail}'),
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child: AutoResizeUniversalImage(
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article.thumbnail.startsWith('http') ? article.thumbnail : '$baseUrl/${article.thumbnail}',
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),
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),
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),
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Text(article.title).textStyle(Theme.of(context).textTheme.titleLarge!),
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Text(article.description).textStyle(Theme.of(context).textTheme.bodyMedium!),
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const Gap(16),
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Text(article.title).textStyle(Theme.of(context).textTheme.titleLarge!).padding(horizontal: 16),
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const Gap(8),
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Text(article.source).textStyle(Theme.of(context).textTheme.bodySmall!),
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Text(htmlDescription.children.map((ele) => ele.text.trim()).join())
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.textStyle(Theme.of(context).textTheme.bodyMedium!)
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.padding(horizontal: 16),
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const Gap(8),
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Row(
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spacing: 2,
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children: [
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Text(widget.allSources.where((x) => x.id == article.source).first.label)
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.textStyle(Theme.of(context).textTheme.bodySmall!),
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],
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).opacity(0.75).padding(horizontal: 16),
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Row(
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spacing: 2,
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children: [
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Text(DateFormat().format(date)).textStyle(Theme.of(context).textTheme.bodySmall!),
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Text(' · ').textStyle(Theme.of(context).textTheme.bodySmall!).bold(),
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Text(RelativeTime(context).format(date)).textStyle(Theme.of(context).textTheme.bodySmall!),
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],
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).opacity(0.75).padding(horizontal: 16),
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const Gap(16),
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],
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).padding(all: 8),
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),
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),
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);
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},
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Block a user