84 lines
2.6 KiB
Dart
84 lines
2.6 KiB
Dart
import 'package:async/async.dart';
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import 'package:flutter/material.dart';
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import '../../../api/errors/error_mapper.dart';
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import '../../../api/marianumconnect/queries/user_search/user_search.dart';
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import '../../../api/marianumconnect/queries/user_search/user_search_response.dart';
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import '../../../widget/app_progress_indicator.dart';
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import '../../../widget/placeholder_view.dart';
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import 'widgets/user_search_tile.dart';
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class JoinChat extends SearchDelegate<String> {
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CancelableOperation<UserSearchResponse>? future;
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@override
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List<Widget>? buildActions(BuildContext context) => [
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if (future != null && query.isNotEmpty)
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FutureBuilder(
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future: future!.value,
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builder: (context, snapshot) {
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if (snapshot.connectionState != ConnectionState.done) {
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return const Padding(
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padding: EdgeInsets.all(10),
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child: Center(child: AppProgressIndicator.medium()),
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);
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}
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return const SizedBox.shrink();
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},
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),
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if (query.isNotEmpty)
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IconButton(onPressed: () => query = '', icon: const Icon(Icons.clear)),
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];
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@override
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Widget? buildLeading(BuildContext context) => null;
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@override
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Widget buildResults(BuildContext context) {
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if (future != null) future!.cancel();
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if (query.isEmpty) {
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return const PlaceholderView(
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text: 'Suche nach Schülerinnen, Schülern und Lehrkräften',
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icon: Icons.person_search_outlined,
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);
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}
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future = CancelableOperation.fromFuture(UserSearch().run(query));
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return FutureBuilder<UserSearchResponse>(
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future: future!.value,
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builder: (context, snapshot) {
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if (snapshot.hasData) {
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final results = snapshot.data!.result;
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if (results.isEmpty) {
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return PlaceholderView(
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icon: Icons.person_off_outlined,
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text: 'Keine Treffer für „$query"',
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);
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}
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return ListView.builder(
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itemCount: results.length,
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itemBuilder: (context, index) {
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final object = results[index];
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return UserSearchTile(
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user: object,
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onTap: () => close(context, object.username),
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);
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},
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);
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} else if (snapshot.hasError) {
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return PlaceholderView(
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icon: Icons.search_off,
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text: errorToUserMessage(snapshot.error),
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);
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}
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return const Center(child: AppProgressIndicator.large());
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},
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);
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}
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@override
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Widget buildSuggestions(BuildContext context) => buildResults(context);
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}
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