prevent to create cond formats with empty range, fdo#58778

Change-Id: I54bac843dc60c419c23c6d3f22c8d2f4b5805327

sc/source/ui/condformat/condformatdlg.cxx

@@ -467,12 +467,20 @@ void ScCondFormatDlg::SetReference(const ScRange& rRef, ScDocument*)
 ScConditionalFormat* ScCondFormatDlg::GetConditionalFormat() const
 {
     rtl::OUString aRangeStr = maEdRange.GetText();
+    if(aRangeStr.isEmpty())
+        return NULL;
+
     ScRangeList aRange;
     sal_uInt16 nFlags = aRange.Parse(aRangeStr, mpDoc, SCA_VALID, mpDoc->GetAddressConvention(), maPos.Tab());
     ScConditionalFormat* pFormat = maCondFormList.GetConditionalFormat();
 
     if(nFlags & SCA_VALID && !aRange.empty() && pFormat)
         pFormat->AddRange(aRange);
+    else
+    {
+        delete pFormat;
+        pFormat = NULL;
+    }
 
     return pFormat;
 }

sc/source/ui/condformat/condformatmgr.cxx

@@ -275,14 +275,14 @@ IMPL_LINK_NOARG(ScCondFormatManagerDlg, AddBtnHdl)
     if(pDlg->Execute() == RET_OK)
     {
         ScConditionalFormat* pNewFormat = pDlg->GetConditionalFormat();
-        if(!pNewFormat)
-            return 0;
-
-        mpFormatList->InsertNew(pNewFormat);
-        pNewFormat->SetKey(FindKey(mpFormatList));
-        maCtrlManager.Update();
+        if(pNewFormat)
+        {
+            mpFormatList->InsertNew(pNewFormat);
+            pNewFormat->SetKey(FindKey(mpFormatList));
+            maCtrlManager.Update();
 
-        mbModified = true;
+            mbModified = true;
+        }
     }
     Show(true, 0);
     pScMod->SetRefDialog( nId, false );

sc/source/ui/view/cellsh1.cxx

@@ -1886,7 +1886,10 @@ void ScCellShell::ExecuteEdit( SfxRequest& rReq )
                 if( pCondFormatDlg->Execute() == RET_OK )
                 {
                     ScConditionalFormat* pFormat = pCondFormatDlg->GetConditionalFormat();
-                    pData->GetDocShell()->GetDocFunc().ReplaceConditionalFormat(nKey, pFormat, aPos.Tab(), pFormat->GetRange());
+                    if(pFormat)
+                        pData->GetDocShell()->GetDocFunc().ReplaceConditionalFormat(nKey, pFormat, aPos.Tab(), pFormat->GetRange());
+                    else
+                        pData->GetDocShell()->GetDocFunc().ReplaceConditionalFormat(nKey, NULL, aPos.Tab(), ScRangeList());
                 }
 
                 pScMod->SetRefDialog( nId, false );