build method

Implementation

@override
Widget build(BuildContext context, WidgetRef ref) {
  final spaceName =
      ref.watch(roomDisplayNameProvider(spaceIdOrAlias)).valueOrNull ??
          spaceIdOrAlias;

  final chatListAsync =
      ref.watch(spaceRelationsOverviewProvider(spaceIdOrAlias));
  final chatList = chatListAsync.valueOrNull?.knownChats ?? [];
  final remoteChatsAsync =
      ref.watch(remoteChatRelationsProvider(spaceIdOrAlias));
  final remoteChats = remoteChatsAsync.valueOrNull ?? [];
  final isLoading = chatListAsync.isLoading || remoteChatsAsync.isLoading;
  final isEmpty = (chatListAsync.hasValue ? chatList.isEmpty : false) &&
      (remoteChatsAsync.hasValue ? remoteChats.isEmpty : false);

  final membership = ref.watch(roomMembershipProvider(spaceIdOrAlias));
  bool canCreateSpace =
      membership.valueOrNull?.canString('CanLinkSpaces') == true;

  return Scaffold(
    appBar: AppBar(
      title: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(L10n.of(context).chat),
          Text(
            '($spaceName)',
            overflow: TextOverflow.ellipsis,
            style: Theme.of(context).textTheme.labelLarge,
          ),
        ],
      ),
      actions: [
        IconButton(
          icon: const Icon(Atlas.arrows_rotating_right_thin),
          iconSize: 28,
          color: Theme.of(context).colorScheme.surface,
          onPressed: () async {
            ref.invalidate(spaceRelationsProvider);
          },
        ),
        if (canCreateSpace)
          PopupMenuButton(
            key: actionsMenuKey,
            icon: const Icon(Atlas.plus_circle),
            iconSize: 28,
            color: Theme.of(context).colorScheme.surface,
            itemBuilder: (BuildContext context) => <PopupMenuEntry>[
              PopupMenuItem(
                key: createChatKey,
                onTap: () => context.pushNamed(
                  Routes.createChat.name,
                  queryParameters: {'spaceId': spaceIdOrAlias},
                  extra: 1,
                ),
                child: Row(
                  children: <Widget>[
                    Text(L10n.of(context).createChat),
                    const Spacer(),
                    const Icon(Atlas.chats),
                  ],
                ),
              ),
              PopupMenuItem(
                onTap: () => context.pushNamed(
                  Routes.linkChat.name,
                  pathParameters: {'spaceId': spaceIdOrAlias},
                ),
                child: Row(
                  children: <Widget>[
                    Text(L10n.of(context).linkExistingChat),
                    const Spacer(),
                    const Icon(Atlas.chats),
                  ],
                ),
              ),
            ],
          ),
      ],
    ),
    body: SingleChildScrollView(
      child: Column(
        children: [
          if (chatList.isNotEmpty)
            chatsListUI(
              ref,
              spaceIdOrAlias,
              chatList,
              chatList.length,
              showOptions: true,
            ),
          if (isLoading) _renderLoading(context),
          if (remoteChats.isNotEmpty)
            renderFurther(context, ref, spaceIdOrAlias, null),
          if (isEmpty) _renderEmpty(context, ref),
        ],
      ),
    ),
  );
}