#3302 fix crash on changing filter string when content is loading or there is no object selected

indra/llui/llfolderview.h

@@ -414,6 +414,7 @@ class LLSaveFolderState : public LLFolderViewFunctor
     virtual void doItem(LLFolderViewItem* item) {}
     void setApply(bool apply);
     void clearOpenFolders() { mOpenFolders.clear(); }
+    bool hasOpenFolders() { return !mOpenFolders.empty(); }
 protected:
     std::set<LLUUID> mOpenFolders;
     bool mApply;

indra/newview/llpanelcontents.cpp

@@ -139,32 +139,47 @@ void LLPanelContents::getState(LLViewerObject *objectp )
 void LLPanelContents::onFilterEdit()
 {
     const std::string& filter_substring = mFilterEditor->getText();
-    if (filter_substring.empty())
+    if (!mPanelInventoryObject->hasInventory())
     {
-        if (mPanelInventoryObject->getFilter().getFilterSubString().empty())
-        {
-            // The current filter and the new filter are empty, nothing to do
-            return;
-        }
-
-        mSavedFolderState.setApply(true);
-        mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
-
-        // Add a folder with the current item to the list of previously opened folders
-        LLOpenFoldersWithSelection opener;
-        mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(opener);
-        mPanelInventoryObject->getRootFolder()->scrollToShowSelection();
+        mDirtyFilter = true;
     }
-    else if (mPanelInventoryObject->getFilter().getFilterSubString().empty())
+    else
     {
-        // The first letter in search term, save existing folder open state
-        if (!mPanelInventoryObject->getFilter().isNotDefault())
+        if (filter_substring.empty())
         {
-            mSavedFolderState.setApply(false);
-            mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
+            if (mPanelInventoryObject->getFilter().getFilterSubString().empty())
+            {
+                // The current filter and the new filter are empty, nothing to do
+                return;
+            }
+
+            if (mDirtyFilter && !mSavedFolderState.hasOpenFolders())
+            {
+                mPanelInventoryObject->getRootFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::ERecurseType::RECURSE_DOWN);
+            }
+            else
+            {
+                mSavedFolderState.setApply(true);
+                mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
+            }
+            mDirtyFilter = false;
+
+            // Add a folder with the current item to the list of previously opened folders
+            LLOpenFoldersWithSelection opener;
+            mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(opener);
+            mPanelInventoryObject->getRootFolder()->scrollToShowSelection();
+        }
+        else if (mPanelInventoryObject->getFilter().getFilterSubString().empty())
+        {
+            // The first letter in search term, save existing folder open state
+            if (!mPanelInventoryObject->getFilter().isNotDefault())
+            {
+                mSavedFolderState.setApply(false);
+                mPanelInventoryObject->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
+                mDirtyFilter = false;
+            }
         }
     }
-
     mPanelInventoryObject->getFilter().setFilterSubString(filter_substring);
 }
 

indra/newview/llpanelcontents.h

@@ -70,6 +70,8 @@ class LLPanelContents : public LLPanel
     void getState(LLViewerObject *object);
     void onFilterEdit();
 
+    bool mDirtyFilter { false };
+
 public:
     class LLFilterEditor* mFilterEditor;
     LLSaveFolderState mSavedFolderState;

indra/newview/llpanelobjectinventory.h

@@ -85,6 +85,8 @@ class LLPanelObjectInventory : public LLPanel, public LLVOInventoryListener
 
     static void idle(void* user_data);
 
+    bool hasInventory(){ return mHaveInventory; };
+
 protected:
     void reset();
     /*virtual*/ void inventoryChanged(LLViewerObject* object,