124 lines
4.2 KiB
Dart
124 lines
4.2 KiB
Dart
import 'package:aves/model/entry/entry.dart';
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import 'package:aves/model/source/collection_lens.dart';
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import 'package:aves/theme/durations.dart';
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import 'package:aves/utils/debouncer.dart';
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import 'package:aves/widgets/common/extensions/build_context.dart';
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import 'package:aves/widgets/common/identity/empty.dart';
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import 'package:aves/widgets/common/thumbnail/scroller.dart';
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import 'package:aves/widgets/map/info_row.dart';
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import 'package:flutter/material.dart';
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class MapEntryScroller extends StatefulWidget {
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final ValueNotifier<CollectionLens?> regionCollectionNotifier;
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final ValueNotifier<AvesEntry?> dotEntryNotifier;
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final ValueNotifier<int?> selectedIndexNotifier;
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final void Function(int index) onTap;
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const MapEntryScroller({
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super.key,
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required this.regionCollectionNotifier,
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required this.dotEntryNotifier,
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required this.selectedIndexNotifier,
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required this.onTap,
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});
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@override
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State<MapEntryScroller> createState() => _MapEntryScrollerState();
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}
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class _MapEntryScrollerState extends State<MapEntryScroller> {
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final ValueNotifier<AvesEntry?> _infoEntryNotifier = ValueNotifier(null);
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final Debouncer _infoDebouncer = Debouncer(delay: ADurations.mapInfoDebounceDelay);
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@override
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void initState() {
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super.initState();
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_registerWidget(widget);
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WidgetsBinding.instance.addPostFrameCallback((_) => _onSelectedEntryChanged());
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}
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@override
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void didUpdateWidget(covariant MapEntryScroller oldWidget) {
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super.didUpdateWidget(oldWidget);
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_unregisterWidget(oldWidget);
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_registerWidget(widget);
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}
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@override
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void dispose() {
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_unregisterWidget(widget);
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super.dispose();
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}
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void _registerWidget(MapEntryScroller widget) {
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widget.dotEntryNotifier.addListener(_onSelectedEntryChanged);
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}
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void _unregisterWidget(MapEntryScroller widget) {
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widget.dotEntryNotifier.removeListener(_onSelectedEntryChanged);
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}
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@override
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Widget build(BuildContext context) {
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return Stack(
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children: [
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SafeArea(
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top: false,
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bottom: false,
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child: MapInfoRow(entryNotifier: _infoEntryNotifier),
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),
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const SizedBox(height: 8),
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ValueListenableBuilder<CollectionLens?>(
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valueListenable: widget.regionCollectionNotifier,
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builder: (context, regionCollection, child) {
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return AnimatedBuilder(
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// update when entries are added/removed
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animation: regionCollection ?? ChangeNotifier(),
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builder: (context, child) {
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final regionEntries = regionCollection?.sortedEntries ?? [];
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return ThumbnailScroller(
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availableWidth: MediaQuery.sizeOf(context).width,
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entryCount: regionEntries.length,
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entryBuilder: (index) => index < regionEntries.length ? regionEntries[index] : null,
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indexNotifier: widget.selectedIndexNotifier,
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onTap: widget.onTap,
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heroTagger: (entry) => Object.hashAll([regionCollection?.id, entry.id]),
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highlightable: true,
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showLocation: false,
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);
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},
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);
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},
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),
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],
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),
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Positioned.fill(
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child: ValueListenableBuilder<CollectionLens?>(
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valueListenable: widget.regionCollectionNotifier,
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builder: (context, regionCollection, child) {
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return regionCollection != null && regionCollection.isEmpty
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? EmptyContent(
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text: context.l10n.mapEmptyRegion,
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alignment: Alignment.center,
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fontSize: 18,
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)
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: const SizedBox();
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},
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),
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),
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],
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);
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}
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void _onSelectedEntryChanged() {
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final selectedEntry = widget.dotEntryNotifier.value;
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if (_infoEntryNotifier.value == null || selectedEntry == null) {
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_infoEntryNotifier.value = selectedEntry;
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} else {
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_infoDebouncer(() => _infoEntryNotifier.value = selectedEntry);
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}
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}
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}
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