fluffychat/lib/components/message_reactions.dart

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import 'package:famedlysdk/famedlysdk.dart';
import 'package:flutter/material.dart';
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import 'package:cached_network_image/cached_network_image.dart';
import 'matrix.dart';
class MessageReactions extends StatelessWidget {
final Event event;
final Timeline timeline;
const MessageReactions(this.event, this.timeline);
@override
Widget build(BuildContext context) {
final allReactionEvents =
event.aggregatedEvents(timeline, RelationshipTypes.Reaction);
final reactionMap = <String, _ReactionEntry>{};
for (final e in allReactionEvents) {
if (e.content['m.relates_to'].containsKey('key')) {
final key = e.content['m.relates_to']['key'];
if (!reactionMap.containsKey(key)) {
reactionMap[key] = _ReactionEntry(
key: key,
count: 0,
reacted: false,
);
}
reactionMap[key].count++;
reactionMap[key].reacted |= e.senderId == e.room.client.userID;
}
}
final reactionList = reactionMap.values.toList();
reactionList.sort((a, b) => b.count - a.count > 0 ? 1 : -1);
return Wrap(
spacing: 4.0,
runSpacing: 4.0,
children: reactionList
.map((r) => _Reaction(
reactionKey: r.key,
count: r.count,
reacted: r.reacted,
onTap: () {
if (r.reacted) {
final evt = allReactionEvents.firstWhere(
(e) =>
e.senderId == e.room.client.userID &&
e.content['m.relates_to']['key'] == r.key,
orElse: () => null);
if (evt != null) {
evt.redact();
}
} else {
event.room.sendReaction(event.eventId, r.key);
}
},
))
.toList(),
);
}
}
class _Reaction extends StatelessWidget {
final String reactionKey;
final int count;
final bool reacted;
final void Function() onTap;
const _Reaction({this.reactionKey, this.count, this.reacted, this.onTap});
@override
Widget build(BuildContext context) {
final borderColor =
reacted ? Colors.red : Theme.of(context).secondaryHeaderColor;
final textColor = Theme.of(context).brightness == Brightness.dark
? Colors.white
: Colors.black;
final color = Theme.of(context).secondaryHeaderColor;
final fontSize = DefaultTextStyle.of(context).style.fontSize;
final padding = fontSize / 5;
Widget content;
if (reactionKey.startsWith('mxc://')) {
final src = Uri.parse(reactionKey)?.getThumbnail(
Matrix.of(context).client,
width: 9999,
height: fontSize * MediaQuery.of(context).devicePixelRatio,
method: ThumbnailMethod.scale,
);
content = Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
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CachedNetworkImage(
imageUrl: src,
height: fontSize,
),
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Container(width: 4),
Text(count.toString(),
style: TextStyle(
color: textColor,
fontSize: DefaultTextStyle.of(context).style.fontSize,
)),
],
);
} else {
var renderKey = reactionKey;
if (renderKey.length > 10) {
renderKey = renderKey.substring(0, 7) + '...';
}
content = Text('$renderKey $count',
style: TextStyle(
color: textColor,
fontSize: DefaultTextStyle.of(context).style.fontSize,
));
}
return InkWell(
child: Container(
decoration: BoxDecoration(
color: color,
border: Border.all(
width: fontSize / 20,
color: borderColor,
),
borderRadius: BorderRadius.all(Radius.circular(padding * 2)),
),
padding: EdgeInsets.all(padding),
child: content,
),
onTap: () => onTap != null ? onTap() : null,
);
}
}
class _ReactionEntry {
String key;
int count;
bool reacted;
_ReactionEntry({this.key, this.count, this.reacted});
}