9 files changed, 461 insertions, 153 deletions

diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 67bcab86ff..cbcc85cc1c 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -314,7 +314,8 @@ set(viewer_SOURCE_FILES
     llgesturemgr.cpp
     llgiveinventory.cpp
     llglsandbox.cpp
-    llgltffolderviews.cpp
+    llgltffolderitem.cpp
+    llgltffoldermodel.cpp
     llgltfmateriallist.cpp
     llgltfmaterialpreviewmgr.cpp
     llgroupactions.cpp
@@ -978,7 +979,8 @@ set(viewer_HEADER_FILES
     llgesturelistener.h
     llgesturemgr.h
     llgiveinventory.h
-    llgltffolderviews.h
+    llgltffolderitem.h
+    llgltffoldermodel.h
     llgltfmateriallist.h
     llgltfmaterialpreviewmgr.h
     llgroupactions.h
diff --git a/indra/newview/llfloatergltfasseteditor.cpp b/indra/newview/llfloatergltfasseteditor.cpp
index a2b5f573bb..62546c6ed9 100644
--- a/indra/newview/llfloatergltfasseteditor.cpp
+++ b/indra/newview/llfloatergltfasseteditor.cpp
@@ -1,7 +1,7 @@
 /**
  * @file llfloatergltfasseteditor.cpp
- * @author Brad Payne
- * @brief LLFloaterFontTest class implementation
+ * @author Andrii Kleshchev
+ * @brief LLFloaterGltfAssetEditor class implementation
  *
  * $LicenseInfo:firstyear=2008&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -29,72 +29,48 @@
 
 #include "llfloatergltfasseteditor.h"
 
-#include "llfolderviewitem.h"
-#include "llgltffolderviews.h"
+#include "gltf/asset.h"
+#include "llcallbacklist.h"
+#include "llselectmgr.h"
+#include "llviewerobject.h"
 
-bool LLGLTFSort::operator()(const LLGLTFItem* const& a, const LLGLTFItem* const& b) const
-{
-    // Comparison operator: returns "true" is a comes before b, "false" otherwise
-    S32 compare = LLStringUtil::compareDict(a->getName(), b->getName());
-    return (compare < 0);
-}
-
-/// LLGLTFViewModel
-
-LLGLTFViewModel::LLGLTFViewModel()
-    : base_t(new LLGLTFSort(), new LLGLTFFilter())
-{}
-
-void LLGLTFViewModel::sort(LLFolderViewFolder* folder)
-{
-    base_t::sort(folder);
-}
+const LLColor4U DEFAULT_WHITE(255, 255, 255);
 
- /// LLGLTFNode
-// LLUICtrlFactory::create<LLGLTFNode>(params);
-class LLGLTFNode : public LLFolderViewItem
-{
-public:
-    struct Params : public LLInitParam::Block<Params, LLFolderViewItem::Params>
-    {
-        Params();
-    };
-    ~LLGLTFNode();
-protected:
-    LLGLTFNode(const Params& p);
-};
-
-LLGLTFNode::LLGLTFNode(const LLGLTFNode::Params& p)
-    : LLFolderViewItem(p)
-{
-}
-
-LLGLTFNode::~LLGLTFNode()
-{
-}
+/// LLFloaterGLTFAssetEditor
 
-LLFloaterGltfAssetEditor::LLFloaterGltfAssetEditor(const LLSD& key)
+LLFloaterGLTFAssetEditor::LLFloaterGLTFAssetEditor(const LLSD& key)
     : LLFloater(key)
+    , mUIColor(LLUIColorTable::instance().getColor("MenuItemEnabledColor", DEFAULT_WHITE))
 {
     setTitle("GLTF Asset Editor (WIP)");
 }
 
-/// LLFloaterGltfAssetEditor
-
-LLFloaterGltfAssetEditor::~LLFloaterGltfAssetEditor()
+LLFloaterGLTFAssetEditor::~LLFloaterGLTFAssetEditor()
 {
+    gIdleCallbacks.deleteFunction(idle, this);
 }
 
-bool LLFloaterGltfAssetEditor::postBuild()
+bool LLFloaterGLTFAssetEditor::postBuild()
 {
     mItemListPanel = getChild<LLPanel>("item_list_panel");
 
+    LLRect scroller_view_rect = mItemListPanel->getRect();
+    scroller_view_rect.translate(-scroller_view_rect.mLeft, -scroller_view_rect.mBottom);
+    LLScrollContainer::Params scroller_params(LLUICtrlFactory::getDefaultParams<LLFolderViewScrollContainer>());
+    scroller_params.rect(scroller_view_rect);
+    scroller_params.name("folder_scroller");
+    mScroller = LLUICtrlFactory::create<LLFolderViewScrollContainer>(scroller_params);
+    mScroller->setFollowsAll();
+
+    // Insert that scroller into the panel widgets hierarchy
+    mItemListPanel->addChild(mScroller);
+
     // Create the root model and view for all conversation sessions
-    LLGLTFItem* base_item = new LLGLTFItem(mGLTFViewModel);
+    LLGLTFFolderItem* base_item = new LLGLTFFolderItem(mGLTFViewModel);
 
     LLFolderView::Params p(LLUICtrlFactory::getDefaultParams<LLFolderView>());
-    p.name = getName();
-    p.title = getLabel();
+    p.name = "Root";
+    p.title = "Root";
     p.rect = LLRect(0, 0, getRect().getWidth(), 0);
     p.parent_panel = mItemListPanel;
     p.tool_tip = p.name;
@@ -103,9 +79,176 @@ bool LLFloaterGltfAssetEditor::postBuild()
     p.root = NULL;
     p.use_ellipses = true;
     p.options_menu = "menu_gltf.xml"; // *TODO : create this or fix to be optional
-    mConversationsRoot = LLUICtrlFactory::create<LLFolderView>(p);
-    mConversationsRoot->setCallbackRegistrar(&mCommitCallbackRegistrar);
-    mConversationsRoot->setEnableRegistrar(&mEnableCallbackRegistrar);
+    mFolderRoot = LLUICtrlFactory::create<LLFolderView>(p);
+    mFolderRoot->setCallbackRegistrar(&mCommitCallbackRegistrar);
+    mFolderRoot->setEnableRegistrar(&mEnableCallbackRegistrar);
+    // Attach root to the scroller
+    mScroller->addChild(mFolderRoot);
+    mFolderRoot->setScrollContainer(mScroller);
+    mFolderRoot->setFollowsAll();
+    mFolderRoot->setOpen(true);
+    mScroller->setVisible(true);
+
+    gIdleCallbacks.addFunction(idle, this);
 
     return true;
 }
+
+void LLFloaterGLTFAssetEditor::onOpen(const LLSD& key)
+{
+    loadFromSelection();
+}
+
+void LLFloaterGLTFAssetEditor::idle(void* user_data)
+{
+    LLFloaterGLTFAssetEditor* floater = (LLFloaterGLTFAssetEditor*)user_data;
+
+    if (floater->mFolderRoot)
+    {
+        floater->mFolderRoot->update();
+    }
+}
+
+void LLFloaterGLTFAssetEditor::loadItem(S32 id, const std::string& name, LLGLTFFolderItem::EType type, LLFolderViewFolder* parent)
+{
+    LLGLTFFolderItem* listener = new LLGLTFFolderItem(id, name, type, mGLTFViewModel);
+
+    LLFolderViewItem::Params params;
+    params.name(name);
+    params.creation_date(0);
+    params.root(mFolderRoot);
+    params.listener(listener);
+    params.rect(LLRect());
+    params.tool_tip = params.name;
+    params.font_color = mUIColor;
+    params.font_highlight_color = mUIColor;
+    LLFolderViewItem* view = LLUICtrlFactory::create<LLFolderViewItem>(params);
+
+    view->addToFolder(parent);
+    view->setVisible(true);
+}
+
+void LLFloaterGLTFAssetEditor::loadFromNode(S32 node_id, LLFolderViewFolder* parent)
+{
+    if (mAsset->mNodes.size() <= node_id)
+    {
+        return;
+    }
+
+    LL::GLTF::Node& node = mAsset->mNodes[node_id];
+
+    std::string name = node.mName;
+    if (node.mName.empty())
+    {
+        name = getString("node_tittle");
+    }
+    else
+    {
+        name = node.mName;
+    }
+
+    LLGLTFFolderItem* listener = new LLGLTFFolderItem(node_id, name, LLGLTFFolderItem::TYPE_NODE, mGLTFViewModel);
+
+    LLFolderViewFolder::Params p;
+    p.root = mFolderRoot;
+    p.listener = listener;
+    p.name = name;
+    p.tool_tip = name;
+    p.font_color = mUIColor;
+    p.font_highlight_color = mUIColor;
+    LLFolderViewFolder* view = LLUICtrlFactory::create<LLFolderViewFolder>(p);
+
+    view->addToFolder(parent);
+    view->setVisible(true);
+    view->setOpen(true);
+
+    for (S32& node_id : node.mChildren)
+    {
+        loadFromNode(node_id, view);
+    }
+
+    if (node.mMesh != LL::GLTF::INVALID_INDEX && mAsset->mMeshes.size() > node.mMesh)
+    {
+        std::string name = mAsset->mMeshes[node.mMesh].mName;
+        if (name.empty())
+        {
+            name = getString("mesh_tittle");
+        }
+        loadItem(node.mMesh, name, LLGLTFFolderItem::TYPE_MESH, view);
+    }
+
+    if (node.mSkin != LL::GLTF::INVALID_INDEX && mAsset->mSkins.size() > node.mSkin)
+    {
+        std::string name = mAsset->mSkins[node.mSkin].mName;
+        if (name.empty())
+        {
+            name = getString("skin_tittle");
+        }
+        loadItem(node.mSkin, name, LLGLTFFolderItem::TYPE_SKIN, view);
+    }
+
+    view->setChildrenInited(true);
+}
+
+void LLFloaterGLTFAssetEditor::loadFromSelection()
+{
+    if (!mFolderRoot || LLSelectMgr::getInstance()->getSelection()->getObjectCount() != 1)
+    {
+        return;
+    }
+
+    LLViewerObject* objectp = LLSelectMgr::getInstance()->getSelection()->getFirstObject();
+    if (!objectp)
+    {
+        return;
+    }
+
+    mAsset = objectp->mGLTFAsset;
+    if (!mAsset)
+    {
+        return;
+    }
+
+    LLUIColor item_color = LLUIColorTable::instance().getColor("MenuItemEnabledColor", DEFAULT_WHITE);
+    for (S32 i = 0; i < mAsset->mScenes.size(); i++)
+    {
+        LL::GLTF::Scene& scene = mAsset->mScenes[i];
+        std::string name = scene.mName;
+        if (scene.mName.empty())
+        {
+            name = getString("scene_tittle");
+        }
+        else
+        {
+            name = scene.mName;
+        }
+
+        LLGLTFFolderItem* listener = new LLGLTFFolderItem(i, name, LLGLTFFolderItem::TYPE_SCENE, mGLTFViewModel);
+
+
+        LLFolderViewFolder::Params p;
+        p.name = name;
+        p.root = mFolderRoot;
+        p.listener = listener;
+        p.tool_tip = name;
+        p.font_color = mUIColor;
+        p.font_highlight_color = mUIColor;
+        LLFolderViewFolder* view = LLUICtrlFactory::create<LLFolderViewFolder>(p);
+
+        view->addToFolder(mFolderRoot);
+        view->setVisible(true);
+        view->setOpen(true);
+
+        for (S32& node_id : scene.mNodes)
+        {
+            loadFromNode(node_id, view);
+        }
+        view->setChildrenInited(true);
+    }
+
+    mGLTFViewModel.requestSortAll();
+    mFolderRoot->setChildrenInited(true);
+    mFolderRoot->arrangeAll();
+    mFolderRoot->update();
+}
+
diff --git a/indra/newview/llfloatergltfasseteditor.h b/indra/newview/llfloatergltfasseteditor.h
index 30000506ae..49c5aa4ae7 100644
--- a/indra/newview/llfloatergltfasseteditor.h
+++ b/indra/newview/llfloatergltfasseteditor.h
@@ -1,7 +1,7 @@
 /**
  * @file llfloatergltfasseteditor.h
- * @author Brad Payne
- * @brief floater to exercise standard fonts
+ * @author Andrii Kleshchev
+ * @brief LLFloaterGltfAssetEditor header file
  *
  * $LicenseInfo:firstyear=2024&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -30,85 +30,40 @@
 
 #include "llfloater.h"
 
-#include "llfolderviewmodel.h"
-#include "llgltffolderviews.h"
+#include "llgltffoldermodel.h"
 
-class LLGLTFViewModel;
-class LLFolderViewFolder;
-class LLFolderViewModelItem;
-
-class LLGLTFSort
-{
-public:
-    LLGLTFSort() { }
-    bool operator()(const LLGLTFItem* const& a, const LLGLTFItem* const& b) const;
-private:
-};
-
-class LLGLTFFilter : public LLFolderViewFilter
-{
-public:
-    LLGLTFFilter() { mEmpty = ""; }
-    ~LLGLTFFilter() {}
-
-    bool                check(const LLFolderViewModelItem* item) { return true; }
-    bool                checkFolder(const LLFolderViewModelItem* folder) const { return true; }
-    void                setEmptyLookupMessage(const std::string& message) { }
-    std::string         getEmptyLookupMessage(bool is_empty_folder = false) const { return mEmpty; }
-    bool                showAllResults() const { return true; }
-    std::string::size_type getStringMatchOffset(LLFolderViewModelItem* item) const { return std::string::npos; }
-    std::string::size_type getFilterStringSize() const { return 0; }
-
-    bool                isActive() const { return false; }
-    bool                isModified() const { return false; }
-    void                clearModified() { }
-    const std::string& getName() const { return mEmpty; }
-    const std::string& getFilterText() { return mEmpty; }
-    void                setModified(EFilterModified behavior = FILTER_RESTART) { }
-
-    void                resetTime(S32 timeout) { }
-    bool                isTimedOut() { return false; }
-
-    bool                isDefault() const { return true; }
-    bool                isNotDefault() const { return false; }
-    void                markDefault() { }
-    void                resetDefault() { }
-
-    S32                 getCurrentGeneration() const { return 0; }
-    S32                 getFirstSuccessGeneration() const { return 0; }
-    S32                 getFirstRequiredGeneration() const { return 0; }
-private:
-    std::string mEmpty;
-};
-
-class LLGLTFViewModel
-    : public LLFolderViewModel<LLGLTFSort, LLGLTFItem, LLGLTFItem, LLGLTFFilter>
+namespace LL
 {
-public:
-    typedef LLFolderViewModel< LLGLTFSort, LLGLTFItem, LLGLTFItem, LLGLTFFilter> base_t;
-    LLGLTFViewModel();
+    namespace GLTF
+    {
+        class Asset;
+    }
+}
 
-    void sort(LLFolderViewFolder* folder);
-    bool startDrag(std::vector<LLFolderViewModelItem*>& items) { return false; }
-
-private:
-};
-
-class LLFloaterGltfAssetEditor : public LLFloater
+class LLFloaterGLTFAssetEditor : public LLFloater
 {
 public:
-    LLFloaterGltfAssetEditor(const LLSD& key);
-    ~LLFloaterGltfAssetEditor();
+    LLFloaterGLTFAssetEditor(const LLSD& key);
+    ~LLFloaterGLTFAssetEditor();
 
     bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     LLGLTFViewModel& getRootViewModel() { return mGLTFViewModel; }
 
+    static void idle(void* user_data);
+    void loadItem(S32 id, const std::string& name, LLGLTFFolderItem::EType type, LLFolderViewFolder* parent);
+    void loadFromNode(S32 node, LLFolderViewFolder* parent);
+    void loadFromSelection();
+
 private:
     LLGLTFViewModel mGLTFViewModel;
+    LLUIColor mUIColor;
 
     LLPanel* mItemListPanel = nullptr;
-    LLFolderView* mConversationsRoot = nullptr;
+    LLFolderView* mFolderRoot = nullptr;
+    LLScrollContainer* mScroller = nullptr;
+    std::shared_ptr<LL::GLTF::Asset> mAsset;
 };
 
 #endif LL_LLFLOATERGLTFASSETEDITOR_H
diff --git a/indra/newview/llgltffolderviews.cpp b/indra/newview/llgltffolderitem.cpp
index 911b6262ca..c4fcb4f5ce 100644
--- a/indra/newview/llgltffolderviews.cpp
+++ b/indra/newview/llgltffolderitem.cpp
@@ -1,7 +1,7 @@
 /**
- * @file llgltffolderviews.cpp
+ * @file llgltffolderitem.cpp
  * @author Andrey Kleshchev
- * @brief LLFloaterFontTest class implementation
+ * @brief LLGLTFFolderItem class implementation
  *
  * $LicenseInfo:firstyear=2008&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -27,36 +27,58 @@
 
 #include "llviewerprecompiledheaders.h"
 
-#include "llgltffolderviews.h"
+#include "llgltffolderitem.h"
+
 #include "llinventoryicon.h"
 
 /// LLGLTFItem
 
-LLGLTFItem::LLGLTFItem(std::string display_name, LLFolderViewModelInterface& root_view_model)
+LLGLTFFolderItem::LLGLTFFolderItem(S32 id, const std::string &display_name, EType type, LLFolderViewModelInterface& root_view_model)
     : LLFolderViewModelItemCommon(root_view_model)
     , mName(display_name)
+    , mItemType(type)
+    , mItemId(id)
 {
     init();
 }
 
-LLGLTFItem::LLGLTFItem(LLFolderViewModelInterface& root_view_model)
+LLGLTFFolderItem::LLGLTFFolderItem(LLFolderViewModelInterface& root_view_model)
     : LLFolderViewModelItemCommon(root_view_model)
 {
     init();
 }
 
-LLGLTFItem::~LLGLTFItem()
+LLGLTFFolderItem::~LLGLTFFolderItem()
 {
 
 }
 
-void LLGLTFItem::init()
+void LLGLTFFolderItem::init()
 {
-    pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_OBJECT);
+    // using inventory icons as a placeholder.
+    // Todo: GLTF needs to have own icons
+    switch (mItemType)
+    {
+    case TYPE_SCENE:
+        pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_OBJECT_MULTI);
+        break;
+    case TYPE_NODE:
+        pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_OBJECT);
+        break;
+    case TYPE_MESH:
+        pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_MESH);
+        break;
+    case TYPE_SKIN:
+        pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_BODYPART_SKIN);
+        break;
+    default:
+        pIcon = LLInventoryIcon::getIcon(LLInventoryType::ICONNAME_OBJECT);
+        break;
+    }
 }
 
 
-bool LLGLTFItem::filterChildItem(LLFolderViewModelItem* item, LLFolderViewFilter& filter)
+bool LLGLTFFolderItem::filterChildItem(LLFolderViewModelItem* item, LLFolderViewFilter& filter)
 {
     S32 filter_generation = filter.getCurrentGeneration();
 
@@ -72,21 +94,20 @@ bool LLGLTFItem::filterChildItem(LLFolderViewModelItem* item, LLFolderViewFilter
         // Update latest generation to pass filter in parent and propagate up to root
         if (item->passedFilter())
         {
-            LLGLTFItem* view_model = this;
+            LLGLTFFolderItem* view_model = this;
 
             while (view_model && view_model->mMostFilteredDescendantGeneration < filter_generation)
             {
                 view_model->mMostFilteredDescendantGeneration = filter_generation;
-                view_model = static_cast<LLGLTFItem*>(view_model->mParent);
+                view_model = static_cast<LLGLTFFolderItem*>(view_model->mParent);
             }
         }
     }
     return continue_filtering;
 }
 
-bool LLGLTFItem::filter(LLFolderViewFilter& filter)
+bool LLGLTFFolderItem::filter(LLFolderViewFilter& filter)
 {
-
     const S32 filter_generation = filter.getCurrentGeneration();
     const S32 must_pass_generation = filter.getFirstRequiredGeneration();
 
@@ -129,11 +150,11 @@ bool LLGLTFItem::filter(LLFolderViewFilter& filter)
         const bool passed_filter = filter.check(this);
         if (passed_filter && mChildren.empty() && is_folder) // Update the latest filter generation for empty folders
         {
-            LLGLTFItem* view_model = this;
+            LLGLTFFolderItem* view_model = this;
             while (view_model && view_model->mMostFilteredDescendantGeneration < filter_generation)
             {
                 view_model->mMostFilteredDescendantGeneration = filter_generation;
-                view_model = static_cast<LLGLTFItem*>(view_model->mParent);
+                view_model = static_cast<LLGLTFFolderItem*>(view_model->mParent);
             }
         }
         setPassedFilter(passed_filter, filter_generation, filter.getStringMatchOffset(this), filter.getFilterStringSize());
diff --git a/indra/newview/llgltffolderviews.h b/indra/newview/llgltffolderitem.h
index 294074fd9f..be6e264368 100644
--- a/indra/newview/llgltffolderviews.h
+++ b/indra/newview/llgltffolderitem.h
@@ -1,7 +1,7 @@
 /**
- * @file llgltffolderviews.h
+ * @file llgltffolderitem.h
  * @author Andrey Kleshchev
- * @brief floater to exercise standard fonts
+ * @brief LLGLTFFolderItem header file
  *
  * $LicenseInfo:firstyear=2024&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -25,19 +25,28 @@
  * $/LicenseInfo$
  */
 
-#ifndef LL_LLFLOATERGLTFFOLDERVIEWS_H
-#define LL_LLFLOATERGLTFFOLDERVIEWS_H
+#ifndef LL_LLGLTFFOLDERITEM_H
+#define LL_LLGLTFFOLDERITEM_H
 
 #include "llfloater.h"
 
 #include "llfolderviewmodel.h"
 
-class LLGLTFItem : public LLFolderViewModelItemCommon
+class LLGLTFFolderItem : public LLFolderViewModelItemCommon
 {
 public:
-    LLGLTFItem(std::string display_name, LLFolderViewModelInterface& root_view_model);
-    LLGLTFItem(LLFolderViewModelInterface& root_view_model);
-    virtual ~LLGLTFItem();
+    enum EType
+    {
+        TYPE_ROOT,
+        TYPE_SCENE,
+        TYPE_NODE,
+        TYPE_MESH,
+        TYPE_SKIN,
+    };
+
+    LLGLTFFolderItem(S32 id, const std::string &display_name, EType type, LLFolderViewModelInterface& root_view_model);
+    LLGLTFFolderItem(LLFolderViewModelInterface& root_view_model);
+    virtual ~LLGLTFFolderItem();
 
     void init();
 
@@ -102,9 +111,18 @@ public:
     bool filterChildItem(LLFolderViewModelItem* item, LLFolderViewFilter& filter);
     bool filter(LLFolderViewFilter& filter) override;
 
+    EType getType() const { return mItemType; }
+    S32 getId() const { return mItemId; }
+
 private:
     LLUIImagePtr pIcon;
     std::string mName;
+    EType mItemType = TYPE_ROOT;
+
+    // mItemId can be an id in a mesh vector, node vector or any other vector.
+    // mItemId is not nessesarily unique, ex: some nodes can reuse the same
+    // mesh or skin, so mesh-items can have the same id.
+    S32 mItemId = -1;
 };
 
-#endif LL_LLFLOATERGLTFFOLDERVIEWS_H
+#endif LL_LLGLTFFOLDERITEM_H
diff --git a/indra/newview/llgltffoldermodel.cpp b/indra/newview/llgltffoldermodel.cpp
new file mode 100644
index 0000000000..5f22c8b710
--- /dev/null
+++ b/indra/newview/llgltffoldermodel.cpp
@@ -0,0 +1,73 @@
+/**
+ * @file llgltffoldermodel.cpp
+ * @author Andrey Kleshchev
+ * @brief gltf model's folder structure related classes
+ *
+ * $LicenseInfo:firstyear=2008&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llgltffoldermodel.h"
+
+#include "llfolderviewitem.h"
+
+bool LLGLTFSort::operator()(const LLGLTFFolderItem* const& a, const LLGLTFFolderItem* const& b) const
+{
+    // Comparison operator: returns "true" is a comes before b, "false" otherwise
+    S32 compare = LLStringUtil::compareDict(a->getName(), b->getName());
+    return (compare < 0);
+}
+
+/// LLGLTFViewModel
+
+LLGLTFViewModel::LLGLTFViewModel()
+    : base_t(new LLGLTFSort(), new LLGLTFFilter())
+{}
+
+void LLGLTFViewModel::sort(LLFolderViewFolder* folder)
+{
+    base_t::sort(folder);
+}
+
+ /// LLGLTFNode
+// LLUICtrlFactory::create<LLGLTFNode>(params);
+class LLGLTFNode : public LLFolderViewItem
+{
+public:
+    struct Params : public LLInitParam::Block<Params, LLFolderViewItem::Params>
+    {
+        Params();
+    };
+    ~LLGLTFNode();
+protected:
+    LLGLTFNode(const Params& p);
+};
+
+LLGLTFNode::LLGLTFNode(const LLGLTFNode::Params& p)
+    : LLFolderViewItem(p)
+{
+}
+
+LLGLTFNode::~LLGLTFNode()
+{
+}
diff --git a/indra/newview/llgltffoldermodel.h b/indra/newview/llgltffoldermodel.h
new file mode 100644
index 0000000000..26f05d1ecd
--- /dev/null
+++ b/indra/newview/llgltffoldermodel.h
@@ -0,0 +1,91 @@
+/**
+ * @file llfloatergltfasseteditor.h
+ * @author Andrey Kleshchev
+ * @brief gltf model's folder structure related classes
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLGLTFFOLDERMODEL_H
+#define LL_LLGLTFFOLDERMODEL_H
+
+#include "llfolderviewmodel.h"
+#include "llgltffolderitem.h"
+
+class LLGLTFSort
+{
+public:
+    LLGLTFSort() { }
+    bool operator()(const LLGLTFFolderItem* const& a, const LLGLTFFolderItem* const& b) const;
+private:
+};
+
+class LLGLTFFilter : public LLFolderViewFilter
+{
+public:
+    LLGLTFFilter() { mEmpty = ""; }
+    ~LLGLTFFilter() {}
+
+    bool                check(const LLFolderViewModelItem* item) { return true; }
+    bool                checkFolder(const LLFolderViewModelItem* folder) const { return true; }
+    void                setEmptyLookupMessage(const std::string& message) { }
+    std::string         getEmptyLookupMessage(bool is_empty_folder = false) const { return mEmpty; }
+    bool                showAllResults() const { return true; }
+    std::string::size_type getStringMatchOffset(LLFolderViewModelItem* item) const { return std::string::npos; }
+    std::string::size_type getFilterStringSize() const { return 0; }
+
+    bool                isActive() const { return false; }
+    bool                isModified() const { return false; }
+    void                clearModified() { }
+    const std::string& getName() const { return mEmpty; }
+    const std::string& getFilterText() { return mEmpty; }
+    void                setModified(EFilterModified behavior = FILTER_RESTART) { }
+
+    void                resetTime(S32 timeout) { }
+    bool                isTimedOut() { return false; }
+
+    bool                isDefault() const { return true; }
+    bool                isNotDefault() const { return false; }
+    void                markDefault() { }
+    void                resetDefault() { }
+
+    S32                 getCurrentGeneration() const { return 0; }
+    S32                 getFirstSuccessGeneration() const { return 0; }
+    S32                 getFirstRequiredGeneration() const { return 0; }
+private:
+    std::string mEmpty;
+};
+
+class LLGLTFViewModel
+    : public LLFolderViewModel<LLGLTFSort, LLGLTFFolderItem, LLGLTFFolderItem, LLGLTFFilter>
+{
+public:
+    typedef LLFolderViewModel< LLGLTFSort, LLGLTFFolderItem, LLGLTFFolderItem, LLGLTFFilter> base_t;
+    LLGLTFViewModel();
+
+    void sort(LLFolderViewFolder* folder);
+    bool startDrag(std::vector<LLFolderViewModelItem*>& items) { return false; }
+
+private:
+};
+
+#endif LL_LLGLTFFOLDERMODEL_H
diff --git a/indra/newview/llviewerfloaterreg.cpp b/indra/newview/llviewerfloaterreg.cpp
index 36fd1015f6..3e1705b8a1 100644
--- a/indra/newview/llviewerfloaterreg.cpp
+++ b/indra/newview/llviewerfloaterreg.cpp
@@ -373,7 +373,7 @@ void LLViewerFloaterReg::registerFloaters()
     LLFloaterReg::add("forget_username", "floater_forget_user.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterForgetUser>);
 
     LLFloaterReg::add("gestures", "floater_gesture.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGesture>);
-    LLFloaterReg::add("gltf_asset_editor", "floater_gltf_asset_editor.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGltfAssetEditor>);
+    LLFloaterReg::add("gltf_asset_editor", "floater_gltf_asset_editor.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGLTFAssetEditor>);
     LLFloaterReg::add("god_tools", "floater_god_tools.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGodTools>);
     LLFloaterReg::add("grid_status", "floater_grid_status.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGridStatus>);
     LLFloaterReg::add("group_picker", "floater_choose_group.xml", (LLFloaterBuildFunc)&LLFloaterReg::build<LLFloaterGroupPicker>);
diff --git a/indra/newview/skins/default/xui/en/floater_gltf_asset_editor.xml b/indra/newview/skins/default/xui/en/floater_gltf_asset_editor.xml
index 9082486d84..4dc0dffcfd 100644
--- a/indra/newview/skins/default/xui/en/floater_gltf_asset_editor.xml
+++ b/indra/newview/skins/default/xui/en/floater_gltf_asset_editor.xml
@@ -3,19 +3,24 @@
  legacy_header_height="18"
  can_resize="true"
  default_tab_group="1"
- height="891"
+ height="400"
  width="256"
- min_height="500"
- min_width="256"
+ min_height="200"
+ min_width="200"
  layout="topleft"
  name="gltf asset editor"
  title="[OBJECT_NAME]">
+    <floater.string name="scene_tittle" value="Scene"/>
+    <floater.string name="node_tittle" value="Node"/>
+    <floater.string name="mesh_tittle" value="Mesh"/>
+    <floater.string name="skin_tittle" value="Skin"/>
     <panel
-     bottom="-1"
      follows="all"
      layout="topleft"
      name="item_list_panel"
-     top_pad="0"
+     visible="true"
+     bottom="-1"
+     top="16"
      left="5"
      right="-1"/>
 </floater>