Adds ability to "dismiss" a notification

lib/inventree/notification.dart

@@ -18,6 +18,15 @@ class InvenTreeNotification extends InvenTreeModel {
   @override
   String get URL => "notifications/";
 
+  @override
+  Map<String, String> defaultListFilters() {
+
+    // By default, only return 'unread' notifications
+    return {
+      "read": "false",
+    };
+  }
+
   String get message => (jsondata["message"] ?? "") as String;
 
   DateTime? get creationDate {
@@ -28,4 +37,15 @@ class InvenTreeNotification extends InvenTreeModel {
     }
   }
 
+  /*
+   * Dismiss this notification (mark as read)
+   */
+  Future<void> dismiss() async {
+
+    final response = await api.post(
+      "${url}read/",
+    );
+
+  }
+
 }

lib/inventree/stock.dart

@@ -533,7 +533,7 @@ class InvenTreeStockItem extends InvenTreeModel {
     Map<String, dynamic> data = {};
 
     // Note: Format of adjustment API was updated in API v14
-    if (InvenTreeAPI().supportModernStockTransactions()) {
+    if (api.supportModernStockTransactions()) {
       // Modern (> 14) API
       data = {
         "items": [
@@ -560,7 +560,7 @@ class InvenTreeStockItem extends InvenTreeModel {
     }
 
     // Expected API return code depends on server API version
-    final int expected_response = InvenTreeAPI().supportModernStockTransactions() ? 201 : 200;
+    final int expected_response = api.supportModernStockTransactions() ? 201 : 200;
 
     var response = await api.post(
       endpoint,

lib/widget/notifications.dart

@@ -36,6 +36,8 @@ class _NotificationState extends RefreshableState<NotificationWidget> {
 
     final results = await InvenTreeNotification().list();
 
+    notifications.clear();
+
     for (InvenTreeModel n in results) {
       if (n is InvenTreeNotification) {
         notifications.add(n);
@@ -43,6 +45,14 @@ class _NotificationState extends RefreshableState<NotificationWidget> {
     }
   }
 
+  Future<void> dismissNotification(BuildContext context, InvenTreeNotification notification) async {
+
+    await notification.dismiss();
+
+    refresh(context);
+
+  }
+
   List<Widget> renderNotifications(BuildContext context) {
 
     List<Widget> tiles = [];
@@ -66,7 +76,7 @@ class _NotificationState extends RefreshableState<NotificationWidget> {
           trailing: IconButton(
             icon: FaIcon(FontAwesomeIcons.bookmark),
             onPressed: () async {
-
+              dismissNotification(context, notification);
             },
           ),
         )