From 8926d8a90e58bf7e507aceb0b6a965bf3726055a Mon Sep 17 00:00:00 2001
From: "Ahmad K. Bawaneh" <ahmad.bawaneh@dominokit.com>
Date: Sun, 22 Sep 2024 09:29:27 +0300
Subject: [PATCH] fix #955 Empty submenu opens as horizontal line.

---
 .../org/dominokit/domino/ui/menu/Menu.java    | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/domino-ui/src/main/java/org/dominokit/domino/ui/menu/Menu.java b/domino-ui/src/main/java/org/dominokit/domino/ui/menu/Menu.java
index 7b6f08022..0abe13f58 100644
--- a/domino-ui/src/main/java/org/dominokit/domino/ui/menu/Menu.java
+++ b/domino-ui/src/main/java/org/dominokit/domino/ui/menu/Menu.java
@@ -1301,15 +1301,26 @@ public Menu<V> setBordered(boolean bordered) {
    * @return The current {@link Menu} instance.
    */
   public Menu<V> openSubMenu(Menu<V> dropMenu) {
-    if (!Objects.equals(currentOpen, dropMenu)) {
-      closeCurrentOpen();
+    if (dropMenu.hasVisibleItems()) {
+      if (!Objects.equals(currentOpen, dropMenu)) {
+        closeCurrentOpen();
+      }
+      dropMenu.open();
+      setCurrentOpen(dropMenu);
     }
-    dropMenu.open();
-    setCurrentOpen(dropMenu);
 
     return this;
   }
 
+  private boolean hasVisibleItems() {
+    for (int index = 0; index < menuItems.size(); index++) {
+      if (menuItems.get(index).isVisible()) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   /**
    * Sets the current open submenu.
    *