From d8ceec8fba4e9ad9cc0aa2ca4cdd02e56376a694 Mon Sep 17 00:00:00 2001
From: Yorik van Havre <yorik@uncreated.net>
Date: Wed, 12 Mar 2025 11:28:40 +0100
Subject: [PATCH] BIM: Fixed material dialog's merge duplicates button - fixes
 #20124

---
 src/Mod/BIM/bimcommands/BimMaterial.py | 31 ++++++++++++++------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/src/Mod/BIM/bimcommands/BimMaterial.py b/src/Mod/BIM/bimcommands/BimMaterial.py
index 29061417e7..3b39fd69d3 100644
--- a/src/Mod/BIM/bimcommands/BimMaterial.py
+++ b/src/Mod/BIM/bimcommands/BimMaterial.py
@@ -150,7 +150,10 @@ class BIM_Material:
             )
             buttonMergeDupes.setIcon(QtGui.QIcon(":/icons/view-refresh.svg"))
             createButtonsLayout.addWidget(buttonMergeDupes, 1, 0)
+            self.dlg.buttonMergeDupes = buttonMergeDupes
             buttonMergeDupes.clicked.connect(self.onMergeDupes)
+            if len(self.dlg.materials) < 2:
+                buttonMergeDupes.setEnabled(False)
 
             # delete unused
             buttonDeleteUnused = QtGui.QPushButton(
@@ -208,20 +211,15 @@ class BIM_Material:
             first = True
             for mat in self.dlg.materials:
                 orig = None
-                for om in mats:
-                    if om.Label == mat.Label:
-                        orig = om
-                        break
-                else:
-                    if (
-                        mat.Label[-1].isdigit()
-                        and mat.Label[-2].isdigit()
-                        and mat.Label[-3].isdigit()
-                    ):
-                        for om in self.dlg.materials:
-                            if om.Label == mat.Label[:-3].strip():
-                                orig = om
-                                break
+                if (
+                    mat.Label[-1].isdigit()
+                    and mat.Label[-2].isdigit()
+                    and mat.Label[-3].isdigit()
+                ):
+                    for om in self.dlg.materials:
+                        if om.Label == mat.Label[:-3].strip():
+                            orig = om
+                            break
                 if orig:
                     for par in mat.InList:
                         for prop in par.PropertiesList:
@@ -522,6 +520,11 @@ class BIM_Material:
                     i.setFlags(i.flags() | QtCore.Qt.ItemIsEditable)
                     if o.Name == name:
                         self.dlg.matList.setCurrentItem(i)
+            if hasattr(self.dlg, "buttonMergeDupes"):
+                if len(self.dlg.materials) > 1:
+                    self.dlg.buttonMergeDupes.setEnabled(True)
+                else:
+                    self.dlg.buttonMergeDupes.setEnabled(False)
 
     def createIcon(self, obj):
         from PySide import QtCore, QtGui