124 lines
3.9 KiB
Dart
124 lines
3.9 KiB
Dart
// Author: fruit.com.cn
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// 职责：追剧收藏网格、分页和编辑选择，不承载顶部续播或重复区块标题。
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import 'dart:async';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import '../../core/data/services/favorite_controller.dart';
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import '../../core/formatting/error_text.dart';
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import '../../core/widgets/empty_state.dart';
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import '../../l10n/app_localizations.dart';
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import '../player/open_player.dart';
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import 'following_grid_card.dart';
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import 'following_paged_grid.dart';
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/// 追剧编辑中的选中状态。
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class FollowingFavoriteSelection {
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const FollowingFavoriteSelection({
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required this.editing,
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required this.selected,
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required this.onToggle,
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});
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final ValueListenable<bool> editing;
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final ValueListenable<Set<String>> selected;
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final ValueChanged<String> onToggle;
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}
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/// 追剧列表。编辑时点卡片只切换选中，不进入播放。
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class FollowingFavoritesGrid extends StatelessWidget {
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const FollowingFavoritesGrid({
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super.key,
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required this.controller,
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required this.selection,
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required this.scrollController,
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required this.onGoHome,
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});
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final FavoriteController controller;
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final FollowingFavoriteSelection selection;
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final ScrollController scrollController;
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final VoidCallback onGoHome;
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@override
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Widget build(BuildContext context) {
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return ValueListenableBuilder<bool>(
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valueListenable: selection.editing,
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builder: (context, isEditing, _) {
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return ValueListenableBuilder<Set<String>>(
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valueListenable: selection.selected,
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builder: (context, picked, _) {
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return ListenableBuilder(
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listenable: controller,
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builder: (context, _) => _grid(context, isEditing, picked),
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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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Widget _grid(BuildContext context, bool isEditing, Set<String> picked) {
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final l10n = AppLocalizations.of(context)!;
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final hasFavorites = controller.cards.isNotEmpty;
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final extra = !isEditing && hasFavorites ? 1 : 0;
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return FollowingPagedGrid(
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key: const Key('following-favorites-grid'),
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scrollController: scrollController,
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loading: controller.loading,
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loadingMore: controller.loadingMore,
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hasMore: controller.hasMore,
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hasItems: hasFavorites,
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showInitialLoading: false,
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errorMessage: controller.error == null
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? null
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: errorText(l10n, controller.error, l10n.favoritesError),
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loadMoreError: controller.loadMoreError == null
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? null
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: errorText(l10n, controller.loadMoreError, l10n.favoritesError),
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onRefresh: controller.load,
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onLoadMore: controller.loadMore,
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itemCount: controller.cards.length + extra,
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empty: EmptyState(
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key: const Key('following-favorites-empty'),
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icon: Icons.bookmark_border_rounded,
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title: l10n.noFavoritesYet,
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),
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itemBuilder: (context, index) => _item(context, index, isEditing, picked),
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);
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}
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Widget _item(
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BuildContext context,
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int index,
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bool isEditing,
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Set<String> picked,
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) {
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if (index == controller.cards.length) {
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return FollowingAddCard(onTap: onGoHome);
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}
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final drama = controller.cards[index];
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return FollowingGridCard(
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dramaId: drama.id,
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title: drama.localizedTitle(Localizations.localeOf(context).languageCode),
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posterUrl: drama.posterUrl,
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viewCount: drama.viewCount,
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editing: isEditing,
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selected: isEditing ? picked.contains(drama.id) : null,
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// TODO(backend): Drama 增加 hasUpdate 字段后，在此传 updateBadge。
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onTap: () => _openOrToggle(context, drama.id, isEditing),
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);
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}
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void _openOrToggle(BuildContext context, String dramaId, bool isEditing) {
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if (isEditing) {
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selection.onToggle(dramaId);
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return;
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}
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final drama = controller.cards.firstWhere((item) => item.id == dramaId);
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unawaited(playDramaFromCatalog(context, drama));
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}
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}
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