From e77baa5234a9888520bddf05dd64b7c43eaeb3e6 Mon Sep 17 00:00:00 2001
From: hahaym6164 <60290070+hahaym6164@users.noreply.github.com>
Date: Sun, 4 May 2025 22:24:34 -0400
Subject: [PATCH 1/3] adding variable _pressedWhileOpen, if element have
 [pressedWhileOpen]="true", adding stay-open-while-press class to the element

---
 src/material/menu/menu-trigger.ts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/material/menu/menu-trigger.ts b/src/material/menu/menu-trigger.ts
index 753ec907c611..8fb06b282b07 100644
--- a/src/material/menu/menu-trigger.ts
+++ b/src/material/menu/menu-trigger.ts
@@ -187,6 +187,17 @@ export class MatMenuTrigger implements AfterContentInit, OnDestroy {
 
     this._menuItemInstance?._setTriggersSubmenu(this.triggersSubmenu());
   }
+  private _pressedWhileOpen: boolean = false;
+  @Input()
+  set pressedWhileOpen(value: boolean) {
+    this._pressedWhileOpen = value;
+    if (value) {
+      this._element.nativeElement.classList.add('stay-open-while-press');
+    }
+  }
+  get pressedWhileOpen(): boolean {
+    return this._pressedWhileOpen;
+  }
   private _menu: MatMenuPanel | null;
 
   /** Data to be passed along to any lazily-rendered content. */

From c69418180240094a96f79f944dff825874b42fb4 Mon Sep 17 00:00:00 2001
From: hahaym6164 <60290070+hahaym6164@users.noreply.github.com>
Date: Sun, 4 May 2025 22:25:50 -0400
Subject: [PATCH 2/3] let button stay pressed state when it have
 stay-open-while-press added.

---
 src/material/menu/menu.scss | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/material/menu/menu.scss b/src/material/menu/menu.scss
index 517f0626b524..a4e24141f9cd 100644
--- a/src/material/menu/menu.scss
+++ b/src/material/menu/menu.scss
@@ -12,6 +12,11 @@ $token-slots: m2-menu.get-token-slots();
 mat-menu {
   display: none;
 }
+.mat-mdc-menu-trigger.stay-open-while-press[aria-expanded='true'] {
+  .mat-mdc-button-persistent-ripple:before {
+    opacity: var(--mat-icon-button-pressed-state-layer-opacity);
+  }
+}
 
 .mat-mdc-menu-content {
   margin: 0;

From 5b05ad4fce9f1e24ff58a258dcd3ed32b66b19e5 Mon Sep 17 00:00:00 2001
From: hahaym6164 <60290070+hahaym6164@users.noreply.github.com>
Date: Thu, 8 May 2025 22:25:32 -0400
Subject: [PATCH 3/3] signed CLA and PR

---
 src/material/menu/menu.scss | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/material/menu/menu.scss b/src/material/menu/menu.scss
index a4e24141f9cd..b49c1df2fbd6 100644
--- a/src/material/menu/menu.scss
+++ b/src/material/menu/menu.scss
@@ -17,7 +17,7 @@ mat-menu {
     opacity: var(--mat-icon-button-pressed-state-layer-opacity);
   }
 }
-
+ 
 .mat-mdc-menu-content {
   margin: 0;
   padding: 8px 0;