From 7632ab81dd01444687d40b2663e093c6e13b4db6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mehmet=20=C3=87etin?=
 <92744169+mehmetcetin01140@users.noreply.github.com>
Date: Mon, 24 Jun 2024 13:10:22 +0300
Subject: [PATCH] Fixed #15889 - Accessibility: Buttons within a Tree component
 can't be activated via Keyboard

---
 src/app/components/tree/tree.ts | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/src/app/components/tree/tree.ts b/src/app/components/tree/tree.ts
index 7ab4a17a4c..3a83472ca3 100755
--- a/src/app/components/tree/tree.ts
+++ b/src/app/components/tree/tree.ts
@@ -635,10 +635,19 @@ export class UITreeNode implements OnInit {
         event.preventDefault();
     }
 
+    isActionableElement(event) {
+        const target = event.target;
+
+        const isActionable = target instanceof HTMLElement && (target.nodeName == 'A' || target.nodeName == 'BUTTON');
+
+        return isActionable;
+    }
+
     onEnter(event: KeyboardEvent) {
         this.tree.onNodeClick(event, <TreeNode>this.node);
         this.setTabIndexForSelectionMode(event, this.tree.nodeTouched);
-        if (!(event.target instanceof HTMLElement && event.target.nodeName === 'A')) {
+
+        if (!this.isActionableElement(event)) {
             event.preventDefault();
         }
     }
@@ -1157,12 +1166,7 @@ export class Tree implements OnInit, AfterContentInit, OnChanges, OnDestroy, Blo
 
     public dragStopSubscription: Subscription | undefined | null;
 
-    constructor(
-        public el: ElementRef,
-        @Optional() public dragDropService: TreeDragDropService,
-        public config: PrimeNGConfig,
-        private cd: ChangeDetectorRef
-    ) {}
+    constructor(public el: ElementRef, @Optional() public dragDropService: TreeDragDropService, public config: PrimeNGConfig, private cd: ChangeDetectorRef) {}
 
     ngOnInit() {
         if (this.droppableNodes) {