From 474012abd603f7e7963344fcd9d14cdc7db7bb9a Mon Sep 17 00:00:00 2001
From: Maxim Nikolenko <maximnproductengine@lindenlab.com>
Date: Tue, 16 May 2023 18:03:57 +0300
Subject: SL-19686 reduce delay when switching between folders

---
 indra/llui/llfolderviewitem.cpp    | 5 +++++
 indra/llui/llfolderviewitem.h      | 1 +
 indra/newview/llinventorypanel.cpp | 4 ++--
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/indra/llui/llfolderviewitem.cpp b/indra/llui/llfolderviewitem.cpp
index 227f1d79e4..bc7a2cc3f0 100644
--- a/indra/llui/llfolderviewitem.cpp
+++ b/indra/llui/llfolderviewitem.cpp
@@ -1769,6 +1769,11 @@ BOOL LLFolderViewFolder::isRemovable()
 	return TRUE;
 }
 
+void LLFolderViewFolder::destroyRoot()
+{
+    delete this;
+}
+
 // this is an internal method used for adding items to folders. 
 void LLFolderViewFolder::addItem(LLFolderViewItem* item)
 {
diff --git a/indra/llui/llfolderviewitem.h b/indra/llui/llfolderviewitem.h
index b6437ab61d..232780ccae 100644
--- a/indra/llui/llfolderviewitem.h
+++ b/indra/llui/llfolderviewitem.h
@@ -394,6 +394,7 @@ public:
 
 	// destroys this folder, and all children
 	virtual void destroyView();
+    void destroyRoot();
 
     // whether known children are fully loaded (arrange sets to true)
     virtual bool isFolderComplete() { return mIsFolderComplete; }
diff --git a/indra/newview/llinventorypanel.cpp b/indra/newview/llinventorypanel.cpp
index ca5abfd661..edcd45db79 100644
--- a/indra/newview/llinventorypanel.cpp
+++ b/indra/newview/llinventorypanel.cpp
@@ -2195,8 +2195,8 @@ void LLInventorySingleFolderPanel::updateSingleFolderRoot()
         LLUUID root_id = mFolderID;
         if (mFolderRoot.get())
         {
-            removeItemID(getRootFolderID());
-            mFolderRoot.get()->destroyView();
+            mItemMap.clear();
+            mFolderRoot.get()->destroyRoot();
         }
 
         mCommitCallbackRegistrar.pushScope();
-- 
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