Code refactoring to add PrintableItem column to ObjectList

resources/icons/eye_closed.svg

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 23.0.4, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.0" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 16 16" enable-background="new 0 0 16 16" xml:space="preserve">
+<g id="eye_x5F_close">
+	<path fill="none" stroke="#808080" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
+		M2,8c0,0,2,4,6,4s6-4,6-4s-2-4-6-4S2,8,2,8z"/>
+	
+		<circle fill="none" stroke="#808080" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" cx="8" cy="8" r="1"/>
+	
+		<line fill="none" stroke="#ED6B21" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" x1="2" y1="14" x2="14" y2="2"/>
+</g>
+</svg>

resources/icons/eye_open.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 23.0.4, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.0" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 16 16" enable-background="new 0 0 16 16" xml:space="preserve">
+<g id="eye_x5F_open">
+	<path fill="none" stroke="#808080" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" d="
+		M2,8c0,0,2,4,6,4s6-4,6-4s-2-4-6-4S2,8,2,8z"/>
+	
+		<circle fill="none" stroke="#808080" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" cx="8" cy="8" r="1"/>
+</g>
+</svg>

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -212,16 +212,20 @@ void ObjectList::create_objects_ctrl()
     EnableDropTarget(wxDF_UNICODETEXT);
 #endif // wxUSE_DRAG_AND_DROP && wxUSE_UNICODE
 
-    // column 0(Icon+Text) of the view control: 
+    // column ItemName(Icon+Text) of the view control: 
     // And Icon can be consisting of several bitmaps
     AppendColumn(new wxDataViewColumn(_(L("Name")), new BitmapTextRenderer(),
-        0, 20*wxGetApp().em_unit()/*200*/, wxALIGN_LEFT, wxDATAVIEW_COL_RESIZABLE));
+        colName, 20*wxGetApp().em_unit()/*200*/, wxALIGN_LEFT, wxDATAVIEW_COL_RESIZABLE));
 
-    // column 1 of the view control:
+    // column PrintableProperty (Icon) of the view control:
+    AppendBitmapColumn(" ", colPrint, wxDATAVIEW_CELL_INERT, int(2 * wxGetApp().em_unit()),
+        wxALIGN_CENTER_HORIZONTAL, wxDATAVIEW_COL_RESIZABLE);
+
+    // column Extruder of the view control:
     AppendColumn(create_objects_list_extruder_column(4));
 
-    // column 2 of the view control:
-    AppendBitmapColumn(" ", 2, wxDATAVIEW_CELL_INERT, int(2.5 * wxGetApp().em_unit())/*25*/,
+    // column ItemEditing of the view control:
+    AppendBitmapColumn("Editing", colEditing, wxDATAVIEW_CELL_INERT, int(2.5 * wxGetApp().em_unit())/*25*/,
         wxALIGN_CENTER_HORIZONTAL, wxDATAVIEW_COL_RESIZABLE);
 }
 
@@ -321,7 +325,7 @@ void ObjectList::set_tooltip_for_item(const wxPoint& pt)
         return;
     }
 
-    if (col->GetTitle() == " " && GetSelectedItemsCount()<2)
+    if (col->GetTitle() == _(L("Editing")) && GetSelectedItemsCount()<2)
         GetMainWindow()->SetToolTip(_(L("Right button click the icon to change the object settings")));
     else if (col->GetTitle() == _("Name"))
     {
@@ -377,7 +381,7 @@ wxDataViewColumn* ObjectList::create_objects_list_extruder_column(int extruders_
         choices.Add(wxString::Format("%d", i));
     wxDataViewChoiceRenderer *c =
         new wxDataViewChoiceRenderer(choices, wxDATAVIEW_CELL_EDITABLE, wxALIGN_CENTER_HORIZONTAL);
-    wxDataViewColumn* column = new wxDataViewColumn(_(L("Extruder")), c, 1, 
+    wxDataViewColumn* column = new wxDataViewColumn(_(L("Extruder")), c, colExtruder, 
                                8*wxGetApp().em_unit()/*80*/, wxALIGN_CENTER_HORIZONTAL, wxDATAVIEW_COL_RESIZABLE);
     return column;
 }
@@ -397,7 +401,7 @@ void ObjectList::update_extruder_values_for_items(const int max_extruder)
         else
             extruder = wxString::Format("%d", object->config.option<ConfigOptionInt>("extruder")->value);
 
-        m_objects_model->SetValue(extruder, item, 1);
+        m_objects_model->SetValue(extruder, item, colExtruder);
 
         if (object->volumes.size() > 1) {
             for (auto id = 0; id < object->volumes.size(); id++) {
@@ -409,7 +413,7 @@ void ObjectList::update_extruder_values_for_items(const int max_extruder)
                 else
                     extruder = wxString::Format("%d", object->volumes[id]->config.option<ConfigOptionInt>("extruder")->value); 
 
-                m_objects_model->SetValue(extruder, item, 1);
+                m_objects_model->SetValue(extruder, item, colExtruder);
             }
         }
     }
@@ -421,7 +425,7 @@ void ObjectList::update_objects_list_extruder_column(int extruders_count)
     if (printer_technology() == ptSLA)
         extruders_count = 1;
 
-    wxDataViewChoiceRenderer* ch_render = dynamic_cast<wxDataViewChoiceRenderer*>(GetColumn(1)->GetRenderer());
+    wxDataViewChoiceRenderer* ch_render = dynamic_cast<wxDataViewChoiceRenderer*>(GetColumn(colExtruder)->GetRenderer());
     if (ch_render->GetChoices().GetCount() - 1 == extruders_count)
         return;
     
@@ -430,21 +434,21 @@ void ObjectList::update_objects_list_extruder_column(int extruders_count)
     if (m_objects && extruders_count > 1)
         update_extruder_values_for_items(extruders_count);
 
-    // delete old 2nd column
-    DeleteColumn(GetColumn(1));
-    // insert new created 3rd column
-    InsertColumn(1, create_objects_list_extruder_column(extruders_count));
+    // delete old extruder column
+    DeleteColumn(GetColumn(colExtruder));
+    // insert new created extruder column
+    InsertColumn(colExtruder, create_objects_list_extruder_column(extruders_count));
     // set show/hide for this column 
     set_extruder_column_hidden(extruders_count <= 1);
     //a workaround for a wrong last column width updating under OSX 
-    GetColumn(2)->SetWidth(25);
+    GetColumn(colEditing)->SetWidth(25);
 
     m_prevent_update_extruder_in_config = false;
 }
 
 void ObjectList::set_extruder_column_hidden(const bool hide) const
 {
-    GetColumn(1)->SetHidden(hide);
+    GetColumn(colExtruder)->SetHidden(hide);
 }
 
 void ObjectList::update_extruder_in_config(const wxDataViewItem& item)
@@ -471,7 +475,7 @@ void ObjectList::update_extruder_in_config(const wxDataViewItem& item)
     }
 
     wxVariant variant;
-    m_objects_model->GetValue(variant, item, 1);
+    m_objects_model->GetValue(variant, item, colExtruder);
     const wxString selection = variant.GetString();
 
     if (!m_config || selection.empty())
@@ -748,7 +752,9 @@ void ObjectList::OnContextMenu(wxDataViewEvent&)
 #endif // __WXOSX__
     const wxString title = col->GetTitle();
 
-    if (title == " ")
+    if (title == " ");
+        // show_context_menu();
+    else if (title == _("Editing"))
         show_context_menu();
     else if (title == _("Name"))
     {
@@ -2260,7 +2266,13 @@ void ObjectList::add_object_to_list(size_t obj_idx, bool call_selection_changed)
 
     // add instances to the object, if it has those
     if (model_object->instances.size()>1)
-        increase_object_instances(obj_idx, model_object->instances.size());
+    {
+        std::vector<bool> print_idicator(model_object->instances.size());
+        for (int i = 0; i < model_object->instances.size(); ++i)
+            print_idicator[i] = model_object->instances[i]->is_printable();
+
+        select_item(m_objects_model->AddInstanceChild(m_objects_model->GetItemById(obj_idx), print_idicator));
+    }
 
     // add settings to the object, if it has those
     add_settings_item(item, &model_object->config);
@@ -2342,7 +2354,7 @@ void ObjectList::delete_from_model_and_list(const std::vector<ItemForDelete>& it
                     (*m_objects)[item->obj_idx]->config.has("extruder"))
                 {
                     const wxString extruder = wxString::Format("%d", (*m_objects)[item->obj_idx]->config.option<ConfigOptionInt>("extruder")->value);
-                    m_objects_model->SetValue(extruder, m_objects_model->GetItemById(item->obj_idx), 1);
+                    m_objects_model->SetValue(extruder, m_objects_model->GetItemById(item->obj_idx), colExtruder);
                 }
                 wxGetApp().plater()->canvas3D()->ensure_on_bed(item->obj_idx);
             }
@@ -3415,7 +3427,7 @@ void ObjectList::rename_item()
 
     // The icon can't be edited so get its old value and reuse it.
     wxVariant valueOld;
-    m_objects_model->GetValue(valueOld, item, 0);
+    m_objects_model->GetValue(valueOld, item, colName);
 
     DataViewBitmapText bmpText;
     bmpText << valueOld;
@@ -3425,7 +3437,7 @@ void ObjectList::rename_item()
 
     wxVariant value;    
     value << bmpText;
-    m_objects_model->SetValue(value, item, 0);
+    m_objects_model->SetValue(value, item, colName);
     m_objects_model->ItemChanged(item);
 
     update_name_in_model(item);
@@ -3466,9 +3478,10 @@ void ObjectList::msw_rescale()
     // update min size !!! A width of control shouldn't be a wxDefaultCoord
     SetMinSize(wxSize(1, 15 * em));
 
-    GetColumn(0)->SetWidth(19 * em);
-    GetColumn(1)->SetWidth( 8 * em);
-    GetColumn(2)->SetWidth( 2 * em);
+    GetColumn(colName)->SetWidth(19 * em);
+    GetColumn(colPrint)->SetWidth( 2 * em);
+    GetColumn(colExtruder)->SetWidth( 8 * em);
+    GetColumn(colEditing)->SetWidth( 2 * em);
 
     // rescale all icons, used by ObjectList
     msw_rescale_icons();
@@ -3489,18 +3502,18 @@ void ObjectList::msw_rescale()
 
 void ObjectList::ItemValueChanged(wxDataViewEvent &event)
 {
-    if (event.GetColumn() == 0)
+    if (event.GetColumn() == colName)
         update_name_in_model(event.GetItem());
-    else if (event.GetColumn() == 1)
+    else if (event.GetColumn() == colExtruder)
         update_extruder_in_config(event.GetItem());
 }
 
 void ObjectList::OnEditingDone(wxDataViewEvent &event)
 {
-    if (event.GetColumn() != 0)
+    if (event.GetColumn() != colName)
         return;
 
-    const auto renderer = dynamic_cast<BitmapTextRenderer*>(GetColumn(0)->GetRenderer());
+    const auto renderer = dynamic_cast<BitmapTextRenderer*>(GetColumn(colName)->GetRenderer());
 
     if (renderer->WasCanceled())
 		wxTheApp->CallAfter([this]{
@@ -3582,7 +3595,7 @@ void ObjectList::set_extruder_for_selected_items(const int extruder) const
         /* We can change extruder for Object/Volume only.
          * So, if Instance is selected, get its Object item and change it
          */
-        m_objects_model->SetValue(extruder_str, type & itInstance ? m_objects_model->GetTopParent(item) : item, 1);
+        m_objects_model->SetValue(extruder_str, type & itInstance ? m_objects_model->GetTopParent(item) : item, colExtruder);
 
         const int obj_idx = type & itObject ? m_objects_model->GetIdByItem(item) :
                             m_objects_model->GetIdByItem(m_objects_model->GetTopParent(item));

src/slic3r/GUI/wxExtensions.cpp

@@ -450,6 +450,16 @@ wxBitmap create_scaled_bitmap(wxWindow *win, const std::string& bmp_name_in,
 // ObjectDataViewModelNode
 // ----------------------------------------------------------------------------
 
+void ObjectDataViewModelNode::init_container()
+{
+#ifdef __WXGTK__
+    // it's necessary on GTK because of control have to know if this item will be container
+    // in another case you couldn't to add subitem for this item
+    // it will be produce "segmentation fault"
+    m_container = true;
+#endif  //__WXGTK__
+}
+
 ObjectDataViewModelNode::ObjectDataViewModelNode(ObjectDataViewModelNode* parent, const ItemType type) :
     m_parent(parent),
     m_type(type),
@@ -472,13 +482,8 @@ ObjectDataViewModelNode::ObjectDataViewModelNode(ObjectDataViewModelNode* parent
         m_name = _(L("Layers"));
     }
 
-#ifdef __WXGTK__
-    // it's necessary on GTK because of control have to know if this item will be container
-    // in another case you couldn't to add subitem for this item
-    // it will be produce "segmentation fault"
     if (type & (itInstanceRoot | itLayerRoot))
-        m_container = true;
-#endif  //__WXGTK__
+        init_container();
 }
 
 ObjectDataViewModelNode::ObjectDataViewModelNode(ObjectDataViewModelNode* parent, 
@@ -504,14 +509,8 @@ ObjectDataViewModelNode::ObjectDataViewModelNode(ObjectDataViewModelNode* parent
     m_name = _(L("Range")) + label_range + "(" + _(L("mm")) + ")";
     m_bmp = create_scaled_bitmap(nullptr, "edit_layers_some");    // FIXME: pass window ptr
 
-#ifdef __WXGTK__
-    // it's necessary on GTK because of control have to know if this item will be container
-    // in another case you couldn't to add subitem for this item
-    // it will be produce "segmentation fault"
-    m_container = true;
-#endif  //__WXGTK__
-
     set_action_icon();
+    init_container();
 }
 
 void ObjectDataViewModelNode::set_action_icon()
@@ -521,6 +520,13 @@ void ObjectDataViewModelNode::set_action_icon()
     m_action_icon = create_scaled_bitmap(nullptr, m_action_icon_name);    // FIXME: pass window ptr
 }
 
+void ObjectDataViewModelNode::set_printable_icon(PrintIndicator printable)
+{
+    m_printable = printable;
+    m_printable_icon = m_printable == piUndef ? m_empty_bmp :
+                       create_scaled_bitmap(nullptr, m_printable == piPrintable ? "eye_open.png" : "eye_closed.png");
+}
+
 Slic3r::GUI::BitmapCache *m_bitmap_cache = nullptr;
 void ObjectDataViewModelNode::update_settings_digest_bitmaps()
 {
@@ -574,17 +580,20 @@ bool ObjectDataViewModelNode::SetValue(const wxVariant& variant, unsigned col)
 {
     switch (col)
     {
-    case 0: {
+    case colPrint:
+        m_printable_icon << variant;
+        return true;
+    case colName: {
         DataViewBitmapText data;
         data << variant;
         m_bmp = data.GetBitmap();
         m_name = data.GetText();
         return true; }
-    case 1: {
+    case colExtruder: {
         const wxString & val = variant.GetString();
         m_extruder = val == "0" ? _(L("default")) : val;
         return true; }
-    case 2:
+    case colEditing:
         m_action_icon << variant;
         return true;
     default:
@@ -744,26 +753,49 @@ static bool append_root_node(ObjectDataViewModelNode *parent_node,
     return false;
 }
 
-wxDataViewItem ObjectDataViewModel::AddInstanceChild(const wxDataViewItem &parent_item, size_t num)
+wxDataViewItem ObjectDataViewModel::AddRoot(const wxDataViewItem &parent_item, ItemType root_type)
 {
     ObjectDataViewModelNode *parent_node = (ObjectDataViewModelNode*)parent_item.GetID();
     if (!parent_node) return wxDataViewItem(0);
 
     // get InstanceRoot node
-    ObjectDataViewModelNode *inst_root_node { nullptr };
+    ObjectDataViewModelNode *root_node { nullptr };
+    const bool appended = append_root_node(parent_node, &root_node, root_type);
+    if (!root_node) return wxDataViewItem(0);
 
-    const bool appended = append_root_node(parent_node, &inst_root_node, itInstanceRoot);
-    const wxDataViewItem inst_root_item((void*)inst_root_node);
-    if (!inst_root_node) return wxDataViewItem(0);
+    const wxDataViewItem root_item((void*)root_node);
 
     if (appended)
-        ItemAdded(parent_item, inst_root_item);// notify control
+        ItemAdded(parent_item, root_item);// notify control
+    return root_item;
+}
+
+wxDataViewItem ObjectDataViewModel::AddInstanceRoot(const wxDataViewItem &parent_item)
+{
+    return AddRoot(parent_item, itInstanceRoot);
+}
+
+wxDataViewItem ObjectDataViewModel::AddInstanceChild(const wxDataViewItem &parent_item, size_t num)
+{
+    const std::vector<bool> print_indicator(num, true);
+    
+    return wxDataViewItem((void*)AddInstanceChild(parent_item, print_indicator));
+}
+
+wxDataViewItem ObjectDataViewModel::AddInstanceChild(const wxDataViewItem& parent_item,
+                                                     const std::vector<bool>& print_indicator)
+{
+    const wxDataViewItem inst_root_item = AddInstanceRoot(parent_item);
+    if (!inst_root_item) return wxDataViewItem(0);
+
+    ObjectDataViewModelNode* inst_root_node = (ObjectDataViewModelNode*)inst_root_item.GetID();
 
     // Add instance nodes
     ObjectDataViewModelNode *instance_node = nullptr;    
     size_t counter = 0;
-    while (counter < num) {
+    while (counter < print_indicator.size()) {
         instance_node = new ObjectDataViewModelNode(inst_root_node, itInstance);
+        instance_node->set_printable_icon(print_indicator[counter] ? piPrintable : piUnprintable);
         inst_root_node->Append(instance_node);
         // notify control
         const wxDataViewItem instance_item((void*)instance_node);
@@ -776,20 +808,7 @@ wxDataViewItem ObjectDataViewModel::AddInstanceChild(const wxDataViewItem &paren
 
 wxDataViewItem ObjectDataViewModel::AddLayersRoot(const wxDataViewItem &parent_item)
 {
-    ObjectDataViewModelNode *parent_node = (ObjectDataViewModelNode*)parent_item.GetID();
-    if (!parent_node) return wxDataViewItem(0);
-
-    // get LayerRoot node
-    ObjectDataViewModelNode *layer_root_node{ nullptr };
-    const bool appended = append_root_node(parent_node, &layer_root_node, itLayerRoot);
-    if (!layer_root_node) return wxDataViewItem(0);
-
-    const wxDataViewItem layer_root_item((void*)layer_root_node);
-
-    if (appended)
-        ItemAdded(parent_item, layer_root_item);// notify control
-
-    return layer_root_item;
+    return AddRoot(parent_item, itLayerRoot);
 }
 
 wxDataViewItem ObjectDataViewModel::AddLayersChild(const wxDataViewItem &parent_item, 
@@ -1356,13 +1375,16 @@ void ObjectDataViewModel::GetValue(wxVariant &variant, const wxDataViewItem &ite
 	ObjectDataViewModelNode *node = (ObjectDataViewModelNode*)item.GetID();
 	switch (col)
 	{
-	case 0:
+	case colPrint:
+		variant << node->m_printable_icon;
+		break;
+	case colName:
         variant << DataViewBitmapText(node->m_name, node->m_bmp);
 		break;
-	case 1:
+	case colExtruder:
 		variant = node->m_extruder;
 		break;
-	case 2:
+	case colEditing:
 		variant << node->m_action_icon;
 		break;
 	default:
@@ -1425,7 +1447,7 @@ bool ObjectDataViewModel::IsEnabled(const wxDataViewItem &item, unsigned int col
     ObjectDataViewModelNode *node = (ObjectDataViewModelNode*)item.GetID();
 
     // disable extruder selection for the non "itObject|itVolume" item
-    return !(col == 1 && node->m_extruder.IsEmpty());
+    return !(col == colExtruder && node->m_extruder.IsEmpty());
 }
 
 wxDataViewItem ObjectDataViewModel::GetParent(const wxDataViewItem &item) const
@@ -1773,7 +1795,7 @@ bool BitmapTextRenderer::GetValueFromEditorCtrl(wxWindow* ctrl, wxVariant& value
 
     // The icon can't be edited so get its old value and reuse it.
     wxVariant valueOld;
-    GetView()->GetModel()->GetValue(valueOld, m_item, 0); 
+    GetView()->GetModel()->GetValue(valueOld, m_item, colName); 
     
     DataViewBitmapText bmpText;
     bmpText << valueOld;

src/slic3r/GUI/wxExtensions.hpp

@@ -175,6 +175,21 @@ enum ItemType {
     itLayer         = 64,
 };
 
+enum ColumnNumber
+{
+    colName         = 0,    // item name
+    colPrint           ,    // printable property
+    colExtruder        ,    // extruder selection
+    colEditing         ,    // item editing
+};
+
+enum PrintIndicator
+{
+    piUndef         = 0,    // no print indicator
+    piPrintable        ,    // printable
+    piUnprintable      ,    // unprintable
+};
+
 class ObjectDataViewModelNode;
 WX_DEFINE_ARRAY_PTR(ObjectDataViewModelNode*, MyObjectTreeModelNodePtrArray);
 
@@ -194,6 +209,8 @@ class ObjectDataViewModelNode
     bool					        m_container = false;
     wxString				        m_extruder = "default";
     wxBitmap				        m_action_icon;
+    PrintIndicator                  m_printable {piUndef};
+    wxBitmap				        m_printable_icon;
 
     std::string                     m_action_icon_name = "";
     Slic3r::ModelVolumeType         m_volume_type;
@@ -206,14 +223,8 @@ public:
         m_type(itObject),
         m_extruder(extruder)
     {
-#ifdef __WXGTK__
-        // it's necessary on GTK because of control have to know if this item will be container
-        // in another case you couldn't to add subitem for this item
-        // it will be produce "segmentation fault"
-        m_container = true;
-#endif  //__WXGTK__
-
         set_action_icon();
+        init_container();
 	}
 
 	ObjectDataViewModelNode(ObjectDataViewModelNode* parent,
@@ -227,15 +238,9 @@ public:
         m_idx       (idx),
         m_extruder  (extruder)
     {
-        m_bmp = bmp;		
-#ifdef __WXGTK__
-        // it's necessary on GTK because of control have to know if this item will be container
-        // in another case you couldn't to add subitem for this item
-        // it will be produce "segmentation fault"
-        m_container = true;
-#endif  //__WXGTK__
-
+        m_bmp = bmp;
         set_action_icon();
+        init_container();
     }
 
 	ObjectDataViewModelNode(ObjectDataViewModelNode* parent,
@@ -256,6 +261,7 @@ public:
 		}
 	}
 
+	void init_container();
 	bool IsContainer() const
 	{
 		return m_container;
@@ -344,6 +350,8 @@ public:
 
 	// Set action icons for node
     void        set_action_icon();
+	// Set printable icon for node
+    void        set_printable_icon(PrintIndicator printable);
 
     void        update_settings_digest_bitmaps();
 	bool        update_settings_digest(const std::vector<std::string>& categories);
@@ -383,6 +391,7 @@ public:
                                     const bool create_frst_child = true);
     wxDataViewItem AddSettingsChild(const wxDataViewItem &parent_item);
     wxDataViewItem AddInstanceChild(const wxDataViewItem &parent_item, size_t num);
+    wxDataViewItem AddInstanceChild(const wxDataViewItem &parent_item, const std::vector<bool>& print_indicator);
     wxDataViewItem AddLayersRoot(const wxDataViewItem &parent_item);
     wxDataViewItem AddLayersChild(  const wxDataViewItem &parent_item, 
                                     const t_layer_height_range& layer_range,
@@ -472,6 +481,10 @@ public:
                               const bool is_marked = false);
     void        DeleteWarningIcon(const wxDataViewItem& item, const bool unmark_object = false);
     t_layer_height_range    GetLayerRangeByItem(const wxDataViewItem& item) const;
+
+private:
+    wxDataViewItem AddRoot(const wxDataViewItem& parent_item, const ItemType root_type);
+    wxDataViewItem AddInstanceRoot(const wxDataViewItem& parent_item);
 };
 
 // ----------------------------------------------------------------------------