fluffychat/lib/pages/chat/reactions_picker.dart

import 'package:flutter/material.dart';

import 'package:matrix/matrix.dart';

import 'package:fluffychat/config/app_config.dart';
import 'package:fluffychat/config/app_emojis.dart';
import 'package:fluffychat/pages/chat/chat.dart';

class ReactionsPicker extends StatelessWidget {
  final ChatController controller;
  const ReactionsPicker(this.controller, {Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    if (controller.showEmojiPicker) return Container();
    final display = controller.editEvent == null &&
        controller.replyEvent == null &&
        controller.room.canSendDefaultMessages &&
        controller.selectedEvents.isNotEmpty;
    return AnimatedContainer(
      duration: const Duration(milliseconds: 300),
      height: (display) ? 56 : 0,
      child: Material(
        color: Colors.transparent,
        child: Builder(builder: (context) {
          if (!display) {
            return Container();
          }
          final emojis = List<String>.from(AppEmojis.emojis);
          final allReactionEvents = controller.selectedEvents.first
              .aggregatedEvents(controller.timeline, RelationshipTypes.reaction)
              ?.where((event) =>
                  event.senderId == event.room.client.userID &&
                  event.type == 'm.reaction');

          for (final event in allReactionEvents) {
            try {
              emojis.remove(event.content['m.relates_to']['key']);
            } catch (_) {}
          }
          return Row(children: [
            Expanded(
                child: Container(
                    decoration: BoxDecoration(
                        color: Theme.of(context).secondaryHeaderColor,
                        borderRadius: const BorderRadius.only(
                            bottomRight:
                                Radius.circular(AppConfig.borderRadius))),
                    padding: const EdgeInsets.only(right: 1),
                    child: ListView.builder(
                      scrollDirection: Axis.horizontal,
                      itemCount: emojis.length,
                      itemBuilder: (c, i) => InkWell(
                        borderRadius: BorderRadius.circular(8),
                        onTap: () => controller.sendEmojiAction(emojis[i]),
                        child: Container(
                          width: 56,
                          height: 56,
                          alignment: Alignment.center,
                          child: Text(
                            emojis[i],
                            style: const TextStyle(fontSize: 30),
                          ),
                        ),
                      ),
                    ))),
            InkWell(
                borderRadius: BorderRadius.circular(8),
                child: Container(
                  margin: const EdgeInsets.symmetric(horizontal: 8),
                  width: 36,
                  height: 56,
                  decoration: BoxDecoration(
                    color: Theme.of(context).secondaryHeaderColor,
                    shape: BoxShape.circle,
                  ),
                  child: const Icon(Icons.add_outlined),
                ),
                onTap: () => controller.pickEmojiAction(allReactionEvents))
          ]);
        }),
      ),
    );
  }
}