snackbar notif component, connectivity check

Issue: #541

Author: AlphaGergedan

Diff for: lib/components/notifs/snackbar.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+
+class SnackBarNotification extends StatelessWidget {
+  final String message;
+
+  const SnackBarNotification({
+    super.key,
+    required this.message,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return SnackBar(
+      content: Text(message),
+    );
+  }
+
+  static void show(BuildContext context, {required String message}) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(message),
+      ),
+    );
+  }
+}

Diff for: lib/pages/editor/editor.dart

@@ -21,6 +21,7 @@ import 'package:saber/components/canvas/canvas_preview.dart';
 import 'package:saber/components/canvas/image/editor_image.dart';
 import 'package:saber/components/canvas/save_indicator.dart';
 import 'package:saber/components/navbar/responsive_navbar.dart';
+import 'package:saber/components/notifs/snackbar.dart';
 import 'package:saber/components/theming/adaptive_alert_dialog.dart';
 import 'package:saber/components/theming/adaptive_icon.dart';
 import 'package:saber/components/theming/dynamic_material_app.dart';
@@ -1733,9 +1734,7 @@ class EditorState extends State<Editor> {
 
   void snackBarNeedsToSaveBeforeExiting() {
     if (!mounted) return;
-    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-      content: Text(t.editor.needsToSaveBeforeExiting),
-    ));
+    SnackBarNotification.show(context, message: t.editor.needsToSaveBeforeExiting);
   }
 
   Widget bottomSheet(BuildContext context) {