524 lines
17 KiB
Dart
524 lines
17 KiB
Dart
import 'package:cached_network_image/cached_network_image.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:flutter_hooks/flutter_hooks.dart';
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import 'package:lemmy_api_client/v3.dart';
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import 'package:url_launcher/url_launcher.dart' as ul;
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import '../hooks/delayed_loading.dart';
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import '../hooks/logged_in_action.dart';
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import '../hooks/memo_future.dart';
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import '../hooks/stores.dart';
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import '../l10n/l10n.dart';
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import '../util/extensions/api.dart';
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import '../util/extensions/spaced.dart';
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import '../util/goto.dart';
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import '../util/intl.dart';
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import '../util/more_icon.dart';
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import '../util/share.dart';
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import '../widgets/avatar.dart';
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import '../widgets/bottom_modal.dart';
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import '../widgets/fullscreenable_image.dart';
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import '../widgets/info_table_popup.dart';
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import '../widgets/markdown_text.dart';
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import '../widgets/reveal_after_scroll.dart';
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import '../widgets/sortable_infinite_list.dart';
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import 'create_post.dart';
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import 'modlog_page.dart';
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/// Displays posts, comments, and general info about the given community
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class CommunityPage extends HookWidget {
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final CommunityView? _community;
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final String instanceHost;
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final String? communityName;
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final int? communityId;
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const CommunityPage.fromName({
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required String this.communityName,
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required this.instanceHost,
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}) : communityId = null,
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_community = null;
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const CommunityPage.fromId({
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required int this.communityId,
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required this.instanceHost,
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}) : communityName = null,
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_community = null;
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CommunityPage.fromCommunityView(CommunityView this._community)
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: instanceHost = _community.instanceHost,
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communityId = _community.community.id,
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communityName = _community.community.name;
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final accountsStore = useAccountsStore();
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final scrollController = useScrollController();
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final fullCommunitySnap = useMemoFuture(() {
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final token = accountsStore.defaultTokenFor(instanceHost);
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if (communityId != null) {
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return LemmyApiV3(instanceHost).run(GetCommunity(
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id: communityId,
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auth: token?.raw,
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));
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} else {
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return LemmyApiV3(instanceHost).run(GetCommunity(
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name: communityName,
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auth: token?.raw,
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));
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}
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});
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final community = () {
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if (fullCommunitySnap.hasData) {
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return fullCommunitySnap.data!.communityView;
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} else if (_community != null) {
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return _community;
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} else {
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return null;
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}
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}();
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// FALLBACK
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if (community == null) {
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return Scaffold(
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appBar: AppBar(),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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if (fullCommunitySnap.hasError) ...[
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const Icon(Icons.error),
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Padding(
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padding: const EdgeInsets.all(8),
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child: Text('ERROR: ${fullCommunitySnap.error}'),
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)
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] else
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const CircularProgressIndicator(semanticsLabel: 'loading')
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],
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),
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),
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);
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}
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// FUNCTIONS
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void _share() => share(community.community.actorId, context: context);
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void _openMoreMenu() {
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showBottomModal(
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context: context,
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builder: (context) => Column(
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children: [
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ListTile(
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leading: const Icon(Icons.open_in_browser),
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title: const Text('Open in browser'),
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onTap: () async => await ul.canLaunch(community.community.actorId)
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? ul.launch(community.community.actorId)
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: ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text("can't open in browser"))),
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),
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ListTile(
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leading: const Icon(Icons.info_outline),
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title: const Text('Nerd stuff'),
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onTap: () {
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showInfoTablePopup(context: context, table: community.toJson());
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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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return Scaffold(
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floatingActionButton: CreatePostFab(community: community),
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body: DefaultTabController(
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length: 3,
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child: NestedScrollView(
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controller: scrollController,
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headerSliverBuilder: (context, innerBoxIsScrolled) => <Widget>[
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SliverAppBar(
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expandedHeight: community.community.icon == null ? 220 : 300,
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pinned: true,
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backgroundColor: theme.cardColor,
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title: RevealAfterScroll(
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scrollController: scrollController,
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after: community.community.icon == null ? 110 : 190,
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fade: true,
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child: Text(
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community.community.displayName,
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overflow: TextOverflow.fade,
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softWrap: false,
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),
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),
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actions: [
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IconButton(icon: const Icon(Icons.share), onPressed: _share),
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IconButton(icon: Icon(moreIcon), onPressed: _openMoreMenu),
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],
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flexibleSpace: FlexibleSpaceBar(
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background: _CommunityOverview(
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community: community,
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instanceHost: instanceHost,
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onlineUsers: fullCommunitySnap.data?.online,
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),
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),
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bottom: PreferredSize(
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preferredSize: const TabBar(tabs: []).preferredSize,
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child: Material(
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color: theme.cardColor,
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child: TabBar(
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tabs: [
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Tab(text: L10n.of(context)!.posts),
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Tab(text: L10n.of(context)!.comments),
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const Tab(text: 'About'),
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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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body: TabBarView(
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children: [
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InfinitePostList(
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fetcher: (page, batchSize, sort) =>
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LemmyApiV3(community.instanceHost).run(GetPosts(
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type: PostListingType.community,
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sort: sort,
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communityId: community.community.id,
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page: page,
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limit: batchSize,
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savedOnly: false,
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)),
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),
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InfiniteCommentList(
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fetcher: (page, batchSize, sortType) =>
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LemmyApiV3(community.instanceHost).run(GetComments(
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communityId: community.community.id,
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auth: accountsStore
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.defaultTokenFor(community.instanceHost)
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?.raw,
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type: CommentListingType.community,
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sort: sortType,
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limit: batchSize,
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page: page,
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savedOnly: false,
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))),
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_AboutTab(
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community: community,
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moderators: fullCommunitySnap.data?.moderators,
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onlineUsers: fullCommunitySnap.data?.online,
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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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}
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}
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class _CommunityOverview extends StatelessWidget {
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final CommunityView community;
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final String instanceHost;
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final int? onlineUsers;
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const _CommunityOverview({
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required this.community,
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required this.instanceHost,
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required this.onlineUsers,
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});
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final shadow = BoxShadow(color: theme.canvasColor, blurRadius: 5);
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final icon = community.community.icon != null
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? Stack(
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alignment: Alignment.center,
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children: [
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Container(
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width: 90,
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height: 90,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: Colors.white,
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.7),
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blurRadius: 3,
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),
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],
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),
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),
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FullscreenableImage(
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url: community.community.icon!,
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child: Avatar(
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url: community.community.icon,
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radius: 83 / 2,
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),
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),
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],
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)
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: null;
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return Stack(children: [
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if (community.community.banner != null)
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FullscreenableImage(
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url: community.community.banner!,
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child: CachedNetworkImage(
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imageUrl: community.community.banner!,
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errorWidget: (_, __, ___) => const SizedBox.shrink(),
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),
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),
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SafeArea(
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child: Padding(
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padding: const EdgeInsets.only(top: 45),
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child: Column(children: [
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if (icon != null) icon,
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// NAME
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Center(
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child: Padding(
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padding: const EdgeInsets.only(top: 10),
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child: RichText(
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overflow: TextOverflow.ellipsis, // TODO: fix overflowing
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text: TextSpan(
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style:
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theme.textTheme.subtitle1?.copyWith(shadows: [shadow]),
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children: [
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const TextSpan(
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text: '!',
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style: TextStyle(fontWeight: FontWeight.w200)),
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TextSpan(
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text: community.community.name,
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style: const TextStyle(fontWeight: FontWeight.w600)),
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const TextSpan(
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text: '@',
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style: TextStyle(fontWeight: FontWeight.w200)),
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TextSpan(
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text: community.community.originInstanceHost,
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style: const TextStyle(fontWeight: FontWeight.w600),
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recognizer: TapGestureRecognizer()
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..onTap = () => goToInstance(
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context, community.community.originInstanceHost),
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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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// TITLE/MOTTO
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Center(
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child: Padding(
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padding: const EdgeInsets.only(top: 8, left: 20, right: 20),
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child: Text(
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community.community.title,
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textAlign: TextAlign.center,
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style:
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TextStyle(fontWeight: FontWeight.w300, shadows: [shadow]),
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),
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),
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),
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Padding(
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padding: const EdgeInsets.only(top: 20),
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child: Stack(
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children: [
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// INFO ICONS
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Padding(
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padding: const EdgeInsets.only(top: 5),
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child: Row(
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children: [
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const Spacer(),
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const Padding(
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padding: EdgeInsets.only(right: 3),
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child: Icon(Icons.people, size: 20),
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),
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Text(compactNumber(community.counts.subscribers)),
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const Spacer(flex: 4),
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const Padding(
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padding: EdgeInsets.only(right: 3),
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child: Icon(Icons.record_voice_over, size: 20),
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),
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Text(onlineUsers == null
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? 'xx'
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: compactNumber(onlineUsers!)),
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const Spacer(),
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],
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),
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),
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_FollowButton(community),
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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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]);
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}
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}
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class _AboutTab extends StatelessWidget {
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final CommunityView community;
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final List<CommunityModeratorView>? moderators;
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final int? onlineUsers;
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const _AboutTab({
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Key? key,
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required this.community,
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required this.moderators,
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required this.onlineUsers,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return ListView(
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padding: const EdgeInsets.only(top: 20),
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children: [
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if (community.community.description != null) ...[
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 15),
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child: MarkdownText(community.community.description!,
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instanceHost: community.instanceHost),
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),
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const _Divider(),
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],
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SizedBox(
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height: 32,
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child: ListView(
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scrollDirection: Axis.horizontal,
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padding: const EdgeInsets.symmetric(horizontal: 15),
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children: [
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Chip(
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label: Text(L10n.of(context)!
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.number_of_users_online(onlineUsers ?? 0))),
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Chip(
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label: Text(L10n.of(context)!
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.number_of_subscribers(community.counts.subscribers))),
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Chip(
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label: Text(
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'${community.counts.posts} post${pluralS(community.counts.posts)}')),
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Chip(
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label: Text(
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'${community.counts.comments} comment${pluralS(community.counts.comments)}')),
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].spaced(8),
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),
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),
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const _Divider(),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 15),
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child: OutlinedButton(
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onPressed: () => goTo(
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context,
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(context) => ModlogPage.forCommunity(
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instanceHost: community.instanceHost,
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communityId: community.community.id,
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communityName: community.community.name,
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),
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),
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child: Text(L10n.of(context)!.modlog),
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),
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),
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const _Divider(),
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if (moderators != null && moderators!.isNotEmpty) ...[
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 15),
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child: Text('Mods:', style: theme.textTheme.subtitle2),
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),
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for (final mod in moderators!)
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// TODO: add user picture, maybe make it into reusable component
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ListTile(
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title: Text(
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mod.moderator.preferredUsername ?? '@${mod.moderator.name}'),
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onTap: () => goToUser.fromPersonSafe(context, mod.moderator),
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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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class _Divider extends StatelessWidget {
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const _Divider();
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@override
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Widget build(BuildContext context) => const Padding(
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padding: EdgeInsets.symmetric(horizontal: 15, vertical: 10),
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child: Divider(),
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);
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}
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class _FollowButton extends HookWidget {
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final CommunityView community;
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const _FollowButton(this.community);
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final isSubbed = useState(community.subscribed);
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final delayed = useDelayedLoading(Duration.zero);
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final loggedInAction = useLoggedInAction(community.instanceHost);
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subscribe(Jwt token) async {
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delayed.start();
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try {
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await LemmyApiV3(community.instanceHost).run(FollowCommunity(
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communityId: community.community.id,
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follow: !isSubbed.value,
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auth: token.raw));
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isSubbed.value = !isSubbed.value;
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// ignore: avoid_catches_without_on_clauses
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} catch (e) {
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(
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content: Row(
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children: [
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const Icon(Icons.warning),
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const SizedBox(width: 10),
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Text("couldn't ${isSubbed.value ? 'un' : ''}sub :<"),
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],
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),
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));
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}
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delayed.cancel();
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}
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return ElevatedButtonTheme(
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data: ElevatedButtonThemeData(
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style: theme.elevatedButtonTheme.style?.copyWith(
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shape: MaterialStateProperty.all(const StadiumBorder()),
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textStyle: MaterialStateProperty.all(theme.textTheme.subtitle1),
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),
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),
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child: Center(
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child: SizedBox(
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height: 27,
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width: 160,
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child: delayed.loading
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? const ElevatedButton(
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onPressed: null,
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child: SizedBox(
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height: 15,
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width: 15,
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child: CircularProgressIndicator(),
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),
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)
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: ElevatedButton.icon(
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onPressed:
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loggedInAction(delayed.pending ? (_) {} : subscribe),
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icon: isSubbed.value
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? const Icon(Icons.remove, size: 18)
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: const Icon(Icons.add, size: 18),
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label: Text(isSubbed.value
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? L10n.of(context)!.unsubscribe
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: L10n.of(context)!.subscribe),
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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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