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lemmur-app-android/lib/pages/community.dart

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import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:lemmy_api_client/lemmy_api_client.dart';
import '../util/intl.dart';
import '../util/text_color.dart';
import '../widgets/badge.dart';
import '../widgets/markdown_text.dart';
class CommunityPage extends HookWidget {
final Future<FullCommunityView> _fullCommunityFuture;
final CommunityView _community;
final String instanceUrl;
CommunityPage.fromName(
{@required String communityName, @required this.instanceUrl})
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: assert(communityName != null),
assert(instanceUrl != null),
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_fullCommunityFuture =
LemmyApi(instanceUrl).v1.getCommunity(name: communityName),
_community = null;
CommunityPage.fromId({@required int communityId, @required this.instanceUrl})
: assert(communityId != null),
assert(instanceUrl != null),
_fullCommunityFuture =
LemmyApi(instanceUrl).v1.getCommunity(id: communityId),
_community = null;
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CommunityPage.fromCommunityView(this._community)
: instanceUrl = _community.actorId.split('/')[2],
_fullCommunityFuture = LemmyApi(_community.actorId.split('/')[2])
.v1
.getCommunity(name: _community.name);
void _goToInstance() {
print('GO TO INSTANCE');
}
void _subscribe() {
print('SUBSCRIBE');
}
void _share() {
print('SHARE');
}
void _openMoreMenu() {
print('OPEN MORE MENU');
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
var fullCommunitySnap = useFuture(_fullCommunityFuture);
final colorOnCard = textColorBasedOnBackground(theme.cardColor);
final community = () {
if (fullCommunitySnap.hasData) {
return fullCommunitySnap.data.community;
} else if (_community != null) {
return _community;
} else {
return null;
}
}();
if (community == null) {
return Scaffold(
appBar: AppBar(
iconTheme: theme.iconTheme,
backgroundColor: theme.cardColor,
elevation: 0,
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
if (fullCommunitySnap.hasError) ...[
Icon(Icons.error),
Padding(
padding: const EdgeInsets.all(8),
child: Text('ERROR: ${fullCommunitySnap.error}'),
)
] else
CircularProgressIndicator(semanticsLabel: 'loading')
],
),
),
);
}
return Scaffold(
body: DefaultTabController(
length: 3,
child: NestedScrollView(
headerSliverBuilder: (context, innerBoxIsScrolled) => <Widget>[
// TODO: change top section to be more flexible
SliverAppBar(
expandedHeight: 300,
floating: false,
pinned: true,
elevation: 0,
backgroundColor: theme.cardColor,
iconTheme: theme.iconTheme,
title: Text('!${community.name}',
style: TextStyle(color: colorOnCard)),
actions: [
IconButton(icon: Icon(Icons.share), onPressed: _share),
IconButton(
icon: Icon(Icons.more_vert), onPressed: _openMoreMenu),
],
flexibleSpace: FlexibleSpaceBar(
background: _CommunityOverview(
community,
instanceUrl: instanceUrl,
goToInstance: _goToInstance,
subscribe: _subscribe,
),
),
),
SliverPersistentHeader(
delegate: _SliverAppBarDelegate(
TabBar(
labelColor: theme.textTheme.bodyText1.color,
unselectedLabelColor: Colors.grey,
tabs: [
Tab(text: 'Posts'),
Tab(text: 'Comments'),
Tab(text: 'About'),
],
),
),
pinned: true,
),
],
body: TabBarView(
children: [
ListView(
children: [
Center(child: Text('posts go here')),
],
),
ListView(
children: [
Center(child: Text('comments go here')),
],
),
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_AboutTab(
community: community,
moderators: fullCommunitySnap.data?.moderators,
),
],
),
),
),
);
}
}
class _CommunityOverview extends StatelessWidget {
final CommunityView community;
final String instanceUrl;
final void Function() goToInstance;
final void Function() subscribe;
_CommunityOverview(
this.community, {
@required this.instanceUrl,
@required this.goToInstance,
@required this.subscribe,
}) : assert(instanceUrl != null),
assert(goToInstance != null),
assert(subscribe != null);
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final colorOnTopOfAccent = textColorBasedOnBackground(theme.accentColor);
final shadow = BoxShadow(color: theme.canvasColor, blurRadius: 5);
final icon = community.icon != null
? Stack(
alignment: Alignment.center,
children: [
Container(
width: 90,
height: 90,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.white,
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.7), blurRadius: 3)
]),
),
Container(
width: 83,
height: 83,
child: CachedNetworkImage(
imageUrl: community.icon,
imageBuilder: (context, imageProvider) => Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
image: DecorationImage(
fit: BoxFit.cover,
image: imageProvider,
),
),
),
),
),
],
)
: null;
final subscribed = community.subscribed ?? false;
return Stack(children: [
if (community.banner != null)
CachedNetworkImage(imageUrl: community.banner),
SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 45),
child: Column(children: [
if (community.icon != null)
Center(
child: Padding(
padding: const EdgeInsets.only(top: 0),
child: Center(child: icon),
),
),
// NAME
Center(
child: Padding(
padding: const EdgeInsets.only(top: 10),
child: RichText(
overflow: TextOverflow.ellipsis, // TODO: fix overflowing
text: TextSpan(
style: theme.textTheme.subtitle1.copyWith(shadows: [shadow]),
children: [
TextSpan(
text: '!',
style: TextStyle(fontWeight: FontWeight.w200)),
TextSpan(
text: community.name,
style: TextStyle(fontWeight: FontWeight.w600)),
TextSpan(
text: '@',
style: TextStyle(fontWeight: FontWeight.w200)),
TextSpan(
text: instanceUrl,
style: TextStyle(fontWeight: FontWeight.w600),
recognizer: TapGestureRecognizer()
..onTap = goToInstance),
],
),
),
)),
// TITLE/MOTTO
Center(
child: Padding(
padding: const EdgeInsets.only(top: 8, left: 20, right: 20),
child: Text(
community.title,
textAlign: TextAlign.center,
style:
TextStyle(fontWeight: FontWeight.w300, shadows: [shadow]),
),
)),
Padding(
padding: const EdgeInsets.only(top: 20),
child: Stack(
children: [
// INFO ICONS
Padding(
padding: const EdgeInsets.only(top: 5),
child: Row(
children: [
Spacer(),
Padding(
padding: const EdgeInsets.only(right: 3),
child: Icon(Icons.people, size: 20),
),
Text(compactNumber(community.numberOfSubscribers)),
Spacer(
flex: 4,
),
Padding(
padding: const EdgeInsets.only(right: 3),
child: Icon(Icons.record_voice_over, size: 20),
),
Text('xx'), // TODO: display online users
Spacer(),
],
),
),
// SUBSCRIBE BUTTON
Center(
child: SizedBox(
height: 27,
child: RaisedButton.icon(
padding:
EdgeInsets.symmetric(vertical: 0, horizontal: 20),
onPressed: subscribe,
icon: subscribed
? Icon(Icons.remove,
size: 18, color: colorOnTopOfAccent)
: Icon(Icons.add,
size: 18, color: colorOnTopOfAccent),
color: theme.accentColor,
label: Text(
'${subscribed ? 'un' : ''}subscribe',
style: TextStyle(
color: colorOnTopOfAccent,
fontSize: theme.textTheme.subtitle1.fontSize),
),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20),
),
),
),
),
],
),
),
]),
),
),
]);
}
}
class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
_SliverAppBarDelegate(this._tabBar);
final TabBar _tabBar;
@override
double get minExtent => _tabBar.preferredSize.height;
@override
double get maxExtent => _tabBar.preferredSize.height;
@override
Widget build(
BuildContext context, double shrinkOffset, bool overlapsContent) {
final theme = Theme.of(context);
return Container(child: _tabBar, color: theme.cardColor);
}
@override
bool shouldRebuild(_SliverAppBarDelegate oldDelegate) => false;
}
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class _AboutTab extends StatelessWidget {
final CommunityView community;
final List<CommunityModeratorView> moderators;
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const _AboutTab({
Key key,
@required this.community,
@required this.moderators,
}) : super(key: key);
void goToUser(int id) {
print('GO TO USER $id');
}
void goToModlog() {
print('GO TO MODLOG');
}
void goToCategories() {
print('GO TO CATEGORIES');
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return ListView(
padding: EdgeInsets.only(top: 20),
children: [
if (community.description != null) ...[
Padding(
padding: const EdgeInsets.symmetric(horizontal: 15),
child: MarkdownText(community.description),
),
_Divider(),
],
SizedBox(
height: 25,
child: ListView(
scrollDirection: Axis.horizontal,
children: [
// TODO: consider using Chips
Padding(
padding: const EdgeInsets.only(left: 7),
child: _Badge('X users online'),
),
_Badge(
'''${community.numberOfSubscribers} subscriber${pluralS(community.numberOfSubscribers)}'''),
_Badge(
'''${community.numberOfPosts} post${pluralS(community.numberOfPosts)}'''),
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Padding(
padding: const EdgeInsets.only(right: 15),
child: _Badge(
'''${community.numberOfComments} comment${pluralS(community.numberOfComments)}'''),
),
],
),
),
_Divider(),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 15, vertical: 0),
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child: OutlineButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
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child: Text('${community.categoryName}'),
onPressed: goToCategories,
),
),
_Divider(),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 15),
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child: OutlineButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
child: Text('Modlog'),
onPressed: goToModlog,
),
),
_Divider(),
if (moderators != null && moderators.isNotEmpty) ...[
Padding(
padding: const EdgeInsets.symmetric(horizontal: 15),
child: Text('Mods:', style: theme.textTheme.subtitle2),
),
for (final mod in moderators)
ListTile(
title: Text(mod.userPreferredUsername ?? '@${mod.userName}'),
onTap: () => goToUser(mod.id),
),
]
],
);
}
}
class _Badge extends StatelessWidget {
final String text;
final bool noPad;
_Badge(this.text, {this.noPad = false});
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return Padding(
padding: noPad ? const EdgeInsets.all(0) : const EdgeInsets.only(left: 8),
child: Badge(
child: Text(
text,
style:
TextStyle(color: textColorBasedOnBackground(theme.accentColor)),
),
borderRadius: const BorderRadius.all(Radius.circular(10)),
),
);
}
}
class _Divider extends StatelessWidget {
@override
Widget build(BuildContext context) => Padding(
padding: const EdgeInsets.symmetric(horizontal: 15, vertical: 10),
child: Divider(),
);
}