From 7c6e4727159f733f5e47aea0f1a27b409431a844 Mon Sep 17 00:00:00 2001
From: "nantawat.poothong" <nantawat.poothong@lseg.com>
Date: Tue, 26 Sep 2023 16:42:57 +0700
Subject: [PATCH] fix(tree): stateless set expand/collapse label only single
 selection

---
 packages/elements/src/tree/__test__/tree.test.js | 10 +++++++---
 packages/elements/src/tree/elements/tree.ts      |  3 ++-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/packages/elements/src/tree/__test__/tree.test.js b/packages/elements/src/tree/__test__/tree.test.js
index 7d51e7a374..83df5d9e84 100644
--- a/packages/elements/src/tree/__test__/tree.test.js
+++ b/packages/elements/src/tree/__test__/tree.test.js
@@ -533,7 +533,7 @@ describe('tree/Tree', function () {
   });
 
   describe('Stateless Mode', function () {
-    it('Should expand or collapse when tapping on parent', async function () {
+    it('Should expand/collapse when tapping on single mode parent', async function () {
       const el = await fixture('<ef-tree stateless></ef-tree>');
       el.data = nestedData;
       await elementUpdated(el);
@@ -547,14 +547,18 @@ describe('tree/Tree', function () {
       expect(el.children[0].expanded).to.be.true;
     });
 
-    it('Should not expand or collapse when tapping on multiple mode parent', async function () {
+    it('Should not expand/collapse when tapping on multiple mode parent', async function () {
       const el = await fixture('<ef-tree multiple stateless></ef-tree>');
       el.data = nestedData;
       await elementUpdated(el);
 
       el.children[0].click();
       await elementUpdated(el);
-      expect(el.children[0].expanded).to.be.false;
+      expect(el.children[0].expanded).to.be.true;
+
+      el.children[0].click();
+      await elementUpdated(el);
+      expect(el.children[0].expanded).to.be.true;
     });
 
     it('Should not select value when tapping on multiple mode parent', async function () {
diff --git a/packages/elements/src/tree/elements/tree.ts b/packages/elements/src/tree/elements/tree.ts
index 7b263d4276..c0b729ee71 100644
--- a/packages/elements/src/tree/elements/tree.ts
+++ b/packages/elements/src/tree/elements/tree.ts
@@ -117,7 +117,8 @@ export class Tree<T extends TreeDataItem = TreeDataItem> extends List<T> {
   public override selectItem(item: T): boolean {
     // Stateless tree
     if (this.stateless) {
-      if (this.manager.isItemParent(item)) {
+      // Single selection - expand/collapse group (parent)
+      if (!this.multiple && this.manager.isItemParent(item)) {
         this.toggleExpandedState(item);
       }
       return false;