feat: 1392 - added "select all" and "select none" actions for product…

… lists (#5842)

* feat: 1392 - added "select all" and "select none" actions for product lists

Impacted files:
* `app_en.arb`: added 3 labels (2 new actions, 1 previously not localized)
* `product_list_item_popup_items.dart`: added 2 actions; minor refactoring
* `product_list_page.dart`: added 2 actions

* different icon for none, more refined title with count

Impacted files:
* `app_en.arb`: added 1 label for multiselect title
* `product_list_item_popup_items.dart`: changed the icon for none
* `product_list_page.dart`: more refined multiselect title

packages/smooth_app/lib/l10n/app_en.arb

@@ -998,10 +998,29 @@
             "count": {}
         }
     },
-    "compare_products_mode": "Compare products",
+    "multiselect_title": "{count,plural, =0{No selected product} =1{One selected product} other{{count} selected products}}",
+    "@multiselect_title": {
+        "description": "Page title with the number of selected items",
+        "placeholders": {
+            "count": {}
+        }
+    },
+    "compare_products_mode": "Compare selected products",
     "@compare_products_mode": {
         "description": "Button to switch to 'compare products mode'"
     },
+    "delete_products_mode": "Delete selected products",
+    "@delete_products_mode": {
+        "description": "Button to switch to 'delete products'"
+    },
+    "select_all_products_mode": "Select all products",
+    "@select_all_products_mode": {
+        "description": "Button to switch to 'select all products'"
+    },
+    "select_none_products_mode": "Select none",
+    "@select_none_products_mode": {
+        "description": "Button to switch to 'select no products'"
+    },
     "compare_products_appbar_title": "Compare products",
     "@compare_products_appbar_title": {
         "description": "AppBar title when in comparison mode "

packages/smooth_app/lib/pages/product/common/product_list_item_popup_items.dart

@@ -37,7 +37,7 @@ abstract class ProductListItemPopupItem {
     required final ProductList productList,
     required final LocalDatabase localDatabase,
     required final BuildContext context,
-    required final Iterable<String> selectedBarcodes,
+    required final Set<String> selectedBarcodes,
   });
 
   /// Returns the popup menu item.
@@ -68,7 +68,7 @@ class ProductListItemPopupSideBySide extends ProductListItemPopupItem {
     required final ProductList productList,
     required final LocalDatabase localDatabase,
     required final BuildContext context,
-    required final Iterable<String> selectedBarcodes,
+    required final Set<String> selectedBarcodes,
   }) async {
     final OrderedNutrientsCache? cache =
         await OrderedNutrientsCache.getCache(context);
@@ -118,7 +118,7 @@ class ProductListItemPopupRank extends ProductListItemPopupItem {
     required final ProductList productList,
     required final LocalDatabase localDatabase,
     required final BuildContext context,
-    required final Iterable<String> selectedBarcodes,
+    required final Set<String> selectedBarcodes,
   }) async {
     await Navigator.push<void>(
       context,
@@ -137,7 +137,7 @@ class ProductListItemPopupRank extends ProductListItemPopupItem {
 class ProductListItemPopupDelete extends ProductListItemPopupItem {
   @override
   String getTitle(final AppLocalizations appLocalizations) =>
-      'Delete selected items'; //appLocalizations.action_delete_list;
+      appLocalizations.delete_products_mode;
 
   @override
   IconData getIconData() => Icons.delete;
@@ -150,7 +150,7 @@ class ProductListItemPopupDelete extends ProductListItemPopupItem {
     required final ProductList productList,
     required final LocalDatabase localDatabase,
     required final BuildContext context,
-    required final Iterable<String> selectedBarcodes,
+    required final Set<String> selectedBarcodes,
   }) async {
     final AppLocalizations appLocalizations = AppLocalizations.of(context);
     final DaoProductList daoProductList = DaoProductList(localDatabase);
@@ -190,3 +190,45 @@ class ProductListItemPopupDelete extends ProductListItemPopupItem {
     return true;
   }
 }
+
+/// Popup menu item for the product list page: select all items.
+class ProductListItemPopupSelectAll extends ProductListItemPopupItem {
+  @override
+  String getTitle(final AppLocalizations appLocalizations) =>
+      appLocalizations.select_all_products_mode;
+
+  @override
+  IconData getIconData() => Icons.check_box;
+
+  @override
+  Future<bool> doSomething({
+    required final ProductList productList,
+    required final LocalDatabase localDatabase,
+    required final BuildContext context,
+    required final Set<String> selectedBarcodes,
+  }) async {
+    selectedBarcodes.addAll(productList.barcodes);
+    return true;
+  }
+}
+
+/// Popup menu item for the product list page: unselect all items.
+class ProductListItemPopupUnselectAll extends ProductListItemPopupItem {
+  @override
+  String getTitle(final AppLocalizations appLocalizations) =>
+      appLocalizations.select_none_products_mode;
+
+  @override
+  IconData getIconData() => Icons.check_box_outline_blank;
+
+  @override
+  Future<bool> doSomething({
+    required final ProductList productList,
+    required final LocalDatabase localDatabase,
+    required final BuildContext context,
+    required final Set<String> selectedBarcodes,
+  }) async {
+    selectedBarcodes.clear();
+    return true;
+  }
+}

packages/smooth_app/lib/pages/product/common/product_list_page.dart

@@ -75,6 +75,10 @@ class _ProductListPageState extends State<ProductListPage>
   final ProductListItemPopupItem _rankItems = ProductListItemPopupRank();
   final ProductListItemPopupItem _sideBySideItems =
       ProductListItemPopupSideBySide();
+  final ProductListItemPopupItem _selectAllItems =
+      ProductListItemPopupSelectAll();
+  final ProductListItemPopupItem _selectNoneItems =
+      ProductListItemPopupUnselectAll();
 
   //returns bool to handle WillPopScope
   Future<bool> _handleUserBacktap() async {
@@ -182,7 +186,9 @@ class _ProductListPageState extends State<ProductListPage>
           onLeaveActionMode: () {
             setState(() => _selectionMode = false);
           },
-          actionModeTitle: Text('${_selectedBarcodes.length}'),
+          actionModeTitle: Text(
+            appLocalizations.multiselect_title(_selectedBarcodes.length),
+          ),
           actionModeActions: <Widget>[
             SmoothPopupMenuButton<ProductListItemPopupItem>(
               onSelected: (final ProductListItemPopupItem action) async {
@@ -216,6 +222,14 @@ class _ProductListPageState extends State<ProductListPage>
                   appLocalizations,
                   _selectedBarcodes.isNotEmpty,
                 ),
+                _selectAllItems.getMenuItem(
+                  appLocalizations,
+                  _selectedBarcodes.length < productList.barcodes.length,
+                ),
+                _selectNoneItems.getMenuItem(
+                  appLocalizations,
+                  _selectedBarcodes.isNotEmpty,
+                ),
               ],
             ),
           ],