Related: fdo#78151 disable promote or demote outline levels in master view

it doesn't make sense in master view to do that

Change-Id: I838422f93131b8a92745a624738c5be3a7ed3459

sd/source/ui/view/drtxtob.cxx

@@ -253,6 +253,13 @@ void TextObjectBar::GetAttrState( SfxItemSet& rSet )
                 bool bDisableRight    = true;
                 bool bDisableUp       = true;
                 bool bDisableDown     = true;
+
+                //fdo#78151 it doesn't make sense to promote or demote outline levels in master view.
+                const DrawViewShell* pDrawViewShell = dynamic_cast< DrawViewShell* >(mpViewShell);
+                const bool bInMasterView = pDrawViewShell && pDrawViewShell->GetEditMode() == EM_MASTERPAGE;
+
+                if (!bInMasterView)
+                {
                     OutlinerView* pOLV = mpView->GetTextEditOutlinerView();
 
                     if (mpView->ISA(OutlineView))
@@ -337,6 +344,7 @@ void TextObjectBar::GetAttrState( SfxItemSet& rSet )
                             bDisableDown = true;
                         }
                     }
+                }
 
                 if (bDisableLeft)
                     rSet.DisableItem(SID_OUTLINE_LEFT);