generated from dellevin/template
83 lines
2.5 KiB
Dart
83 lines
2.5 KiB
Dart
part of '../reader_screen.dart';
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mixin _LinkHandlingMixin on State<ReaderScreen> {
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// === Borrowed state (provided by _ReaderScreenState fields) ===
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BookSession get bookSession;
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ReaderSettings get readerSettings;
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// === Cross-mixin: _SpineNavigationMixin ===
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Future<void> loadCarousel({
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String anchor = 'top',
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int? overrideSpineIndex,
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double? restoreScrollRatio,
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});
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// === Cross-mixin: _ThemeMixin ===
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EpubTheme getEpubTheme();
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bool shouldHandleLinkTap(String url) {
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if (url.startsWith('epub://')) {
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final index = bookSession.findSpineIndexByUrl(url);
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return index != null;
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} else {
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return readerSettings.linkHandling != ReaderLinkHandling.never;
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}
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}
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Future<void> handleLinkTap(String url) async {
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if (url.startsWith('epub://')) {
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final index = bookSession.findSpineIndexByUrl(url);
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if (index != null) {
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String anchor = 'top';
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if (url.contains('#')) {
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anchor = url.split('#').last;
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}
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await loadCarousel(anchor: anchor, overrideSpineIndex: index);
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}
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} else {
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final linkHandling = readerSettings.linkHandling;
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final uri = Uri.tryParse(url);
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if (uri != null && await canLaunchUrl(uri)) {
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if (linkHandling == ReaderLinkHandling.always) {
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await launchUrl(uri);
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} else if (linkHandling == ReaderLinkHandling.ask) {
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if (mounted && context.mounted) {
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final shouldOpen =
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await appDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('打开外部链接'),
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content: Text('是否打开链接: $url'),
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actions: [
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TextButton(
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onPressed: () => Navigator.of(context).pop(false),
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child: const Text('取消'),
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),
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FilledButton(
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onPressed: () => Navigator.of(context).pop(true),
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child: const Text('打开'),
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),
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],
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),
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) ??
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false;
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if (shouldOpen) {
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await launchUrl(uri);
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}
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}
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}
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// ReaderLinkHandling.never: do nothing
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} else {
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if (mounted && context.mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('无法打开链接: $url')),
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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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