Add a link to trash after removing items

app/lib/navigation_manager.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/widgets.dart';
+
+class NavigationManager {
+  factory NavigationManager() => _inst;
+
+  NavigationManager._();
+
+  void setHandler(NavigationHandler handler) {
+    _handler = handler;
+  }
+
+  void unsetHandler(NavigationHandler handler) {
+    _handler = null;
+  }
+
+  NavigatorState? getNavigator() => _handler?.getNavigator();
+
+  NavigationHandler? _handler;
+
+  static final _inst = NavigationManager._();
+}
+
+abstract class NavigationHandler {
+  NavigatorState? getNavigator();
+}

app/lib/widget/favorite_browser.dart

@@ -333,6 +333,7 @@ class _FavoriteBrowserState extends State<FavoriteBrowser>
     await RemoveSelectionHandler()(
       account: widget.account,
       selectedFiles: selectedFiles,
+      isMoveToTrash: true,
     );
   }
 

app/lib/widget/handler/remove_selection_handler.dart

@@ -7,8 +7,10 @@ import 'package:nc_photos/debug_util.dart';
 import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/file.dart';
 import 'package:nc_photos/k.dart' as k;
+import 'package:nc_photos/navigation_manager.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/use_case/remove.dart';
+import 'package:nc_photos/widget/trashbin_browser.dart';
 
 class RemoveSelectionHandler {
   /// Remove [selectedFiles] and return the removed count
@@ -17,6 +19,7 @@ class RemoveSelectionHandler {
     required List<File> selectedFiles,
     bool shouldCleanupAlbum = true,
     bool isRemoveOpened = false,
+    bool isMoveToTrash = false,
   }) async {
     final String processingText, successText;
     final String Function(int) failureText;
@@ -52,15 +55,27 @@ class RemoveSelectionHandler {
       },
       shouldCleanUp: shouldCleanupAlbum,
     );
+    final trashAction = isMoveToTrash
+        ? SnackBarAction(
+            label: L10n.global().albumTrashLabel,
+            onPressed: () {
+              NavigationManager().getNavigator()?.pushNamed(
+                  TrashbinBrowser.routeName,
+                  arguments: TrashbinBrowserArguments(account));
+            },
+          )
+        : null;
     if (failureCount == 0) {
       SnackBarManager().showSnackBar(SnackBar(
         content: Text(successText),
         duration: k.snackBarDurationNormal,
+        action: trashAction,
       ));
     } else {
       SnackBarManager().showSnackBar(SnackBar(
         content: Text(failureText(failureCount)),
         duration: k.snackBarDurationNormal,
+        action: trashAction,
       ));
     }
     return selectedFiles.length - failureCount;

app/lib/widget/home_photos.dart

@@ -425,6 +425,7 @@ class _HomePhotosState extends State<HomePhotos>
     await RemoveSelectionHandler()(
       account: widget.account,
       selectedFiles: selectedFiles,
+      isMoveToTrash: true,
     );
   }
 

app/lib/widget/my_app.dart

@@ -4,6 +4,7 @@ import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:logging/logging.dart';
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/language_util.dart' as language_util;
+import 'package:nc_photos/navigation_manager.dart';
 import 'package:nc_photos/pref.dart';
 import 'package:nc_photos/snack_bar_manager.dart';
 import 'package:nc_photos/theme.dart';
@@ -49,11 +50,13 @@ class MyApp extends StatefulWidget {
   static late BuildContext _globalContext;
 }
 
-class _MyAppState extends State<MyApp> implements SnackBarHandler {
+class _MyAppState extends State<MyApp>
+    implements SnackBarHandler, NavigationHandler {
   @override
   void initState() {
     super.initState();
     SnackBarManager().registerHandler(this);
+    NavigationManager().setHandler(this);
     _themeChangedListener =
         AppEventListener<ThemeChangedEvent>(_onThemeChangedEvent)..begin();
     _langChangedListener =
@@ -77,6 +80,7 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
       initialRoute: Splash.routeName,
       onGenerateRoute: _onGenerateRoute,
       navigatorObservers: <NavigatorObserver>[MyApp.routeObserver],
+      navigatorKey: _navigatorKey,
       scaffoldMessengerKey: _scaffoldMessengerKey,
       locale: language_util.getSelectedLocale(),
       localizationsDelegates: AppLocalizations.localizationsDelegates,
@@ -107,6 +111,7 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
   void dispose() {
     super.dispose();
     SnackBarManager().unregisterHandler(this);
+    NavigationManager().unsetHandler(this);
     _themeChangedListener.end();
     _langChangedListener.end();
   }
@@ -115,6 +120,9 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
   showSnackBar(SnackBar snackBar) =>
       _scaffoldMessengerKey.currentState?.showSnackBar(snackBar);
 
+  @override
+  getNavigator() => _navigatorKey.currentState;
+
   ThemeData _getLightTheme() => ThemeData(
         brightness: Brightness.light,
         primarySwatch: AppTheme.primarySwatchLight,
@@ -489,6 +497,7 @@ class _MyAppState extends State<MyApp> implements SnackBarHandler {
   }
 
   final _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();
+  final _navigatorKey = GlobalKey<NavigatorState>();
 
   late AppEventListener<ThemeChangedEvent> _themeChangedListener;
   late AppEventListener<LanguageChangedEvent> _langChangedListener;

app/lib/widget/person_browser.dart

@@ -392,6 +392,7 @@ class _PersonBrowserState extends State<PersonBrowser>
     await RemoveSelectionHandler()(
       account: widget.account,
       selectedFiles: selectedFiles,
+      isMoveToTrash: true,
     );
   }
 

app/lib/widget/viewer.dart

@@ -568,6 +568,7 @@ class _ViewerState extends State<Viewer>
       account: widget.account,
       selectedFiles: [file],
       isRemoveOpened: true,
+      isMoveToTrash: true,
     );
     if (count > 0) {
       Navigator.of(context).pop();