From 74586023fbf244eed0a4a1bcbac3218fe26e3140 Mon Sep 17 00:00:00 2001
From: Pratik Borhade <pratikborhade302@gmail.com>
Date: Sat, 18 Oct 2025 13:14:39 +0200
Subject: [PATCH] Fix #147698: Prevent drag drop inside packed nodetree
 interface

When node tree is packed, prevent drag-drop operation from rearranging
the socket/panel inside node-tree interface.

Pull Request: https://projects.blender.org/blender/blender/pulls/147794
---
 .../templates/interface_template_node_tree_interface.cc    | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/source/blender/editors/interface/templates/interface_template_node_tree_interface.cc b/source/blender/editors/interface/templates/interface_template_node_tree_interface.cc
index 29bf7906274..ce0bda691a8 100644
--- a/source/blender/editors/interface/templates/interface_template_node_tree_interface.cc
+++ b/source/blender/editors/interface/templates/interface_template_node_tree_interface.cc
@@ -7,6 +7,7 @@
  */
 
 #include "BKE_context.hh"
+#include "BKE_library.hh"
 #include "BKE_main_invariants.hh"
 #include "BKE_node_tree_interface.hh"
 
@@ -332,6 +333,9 @@ class NodeTreeInterfaceView : public AbstractTreeView {
 
 std::unique_ptr<AbstractViewItemDragController> NodeSocketViewItem::create_drag_controller() const
 {
+  if (!ID_IS_EDITABLE(&nodetree_.id)) {
+    return nullptr;
+  }
   return std::make_unique<NodeTreeInterfaceDragController>(
       static_cast<NodeTreeInterfaceView &>(this->get_tree_view()), socket_.item, nodetree_);
 }
@@ -343,6 +347,9 @@ std::unique_ptr<TreeViewItemDropTarget> NodeSocketViewItem::create_drop_target()
 
 std::unique_ptr<AbstractViewItemDragController> NodePanelViewItem::create_drag_controller() const
 {
+  if (!ID_IS_EDITABLE(&nodetree_.id)) {
+    return nullptr;
+  }
   return std::make_unique<NodeTreeInterfaceDragController>(
       static_cast<NodeTreeInterfaceView &>(this->get_tree_view()), panel_.item, nodetree_);
 }