From e478ea7d7727d73c0735aa0c2af65d3fb34d70a5 Mon Sep 17 00:00:00 2001
From: "Zheng, Lei" <realthunder.dev@gmail.com>
Date: Sun, 17 Dec 2023 21:27:25 +0800
Subject: [PATCH] Gui: deduce object path when setting active object

---
 src/Gui/ActiveObjectList.cpp | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/Gui/ActiveObjectList.cpp b/src/Gui/ActiveObjectList.cpp
index 976632da48..717a65ad2b 100644
--- a/src/Gui/ActiveObjectList.cpp
+++ b/src/Gui/ActiveObjectList.cpp
@@ -111,10 +111,34 @@ Gui::ActiveObjectList::ObjectInfo Gui::ActiveObjectList::getObjectInfo(App::Docu
             if (info.obj)
                 break;
         }
+        if(!info.obj) {
+            // No selection is found, try to obtain the object hierarchy using
+            // DocumentObject::getParents()
+            unsigned long count = 0xffffffff;
+            for(auto &v : obj->getParents()) {
+                if(v.first->getDocument() != _Doc->getDocument())
+                    continue;
 
-        if (!info.obj && obj->getDocument()==_Doc->getDocument())
-            info.obj = obj;
+                // We prioritize on non-linked group object having the least
+                // hierarchies.
+                unsigned long cnt = v.first->getSubObjectList(v.second.c_str()).size();
+                if(v.first->getLinkedObject(false) != v.first)
+                    cnt &= 0x8000000;
+                if(cnt < count) {
+                    count = cnt;
+                    info.obj = v.first;
+                    info.subname = v.second;
+                }
+            }
+
+            if(!info.obj) {
+                if (obj->getDocument()!=_Doc->getDocument())
+                    return info;
+                info.obj = obj;
+            }
+        }
     }
+
     return info;
 }