MM: fix silent mode on merge start

We currently don't handle the change of silent mode during a running
mail merge job correctly, so don't allow it.

Change-Id: I2cb8cc1c737e93e8b2a90a6e73fb3e49008fe91d

sw/source/uibase/dbui/dbmgr.cxx

@@ -1038,6 +1038,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
     //check if the doc is synchronized and contains at least one linked section
     const bool bSynchronizedDoc = pSourceShell->IsLabelDoc() && pSourceShell->GetSectionFormatCount() > 1;
     const bool bNeedsTempFiles = ( bMT_EMAIL || bMT_FILE );
+    const bool bIsMergeSilent = IsMergeSilent();
 
     bool bCheckSingleFile_ = rMergeDescriptor.bCreateSingleFile;
     if( bMT_EMAIL )
@@ -1162,7 +1163,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
             vcl::Window *pSourceWindow = nullptr;
             VclPtr<CancelableDialog> pProgressDlg;
 
-            if( !IsMergeSilent() )
+            if( !bIsMergeSilent )
             {
                 // construct the process dialog
                 pSourceWindow = &pSourceShell->GetView().GetEditWin();
@@ -1225,7 +1226,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
             // it can be manually computed from the source documents (for which we do layouts, so the page
             // count is known, and there is a blank page between each of them in the target document).
             int targetDocPageCount = 0;
-            if( !IsMergeSilent() && bMT_SHELL &&
+            if( !bIsMergeSilent && bMT_SHELL &&
                     lcl_getCountFromResultSet( nDocCount, pImpl->pMergeData->xResultSet ) )
                 static_cast<CreateMonitor*>( pProgressDlg.get() )->SetTotalCount( nDocCount );
 
@@ -1290,7 +1291,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
                         std::unique_ptr< INetURLObject > aTempFileURL;
                         if( bNeedsTempFiles )
                             aTempFileURL.reset( new INetURLObject(aTempFile->GetURL()));
-                        if (!IsMergeSilent()) {
+                        if( !bIsMergeSilent ) {
                             if( bMT_SHELL )
                                 static_cast<CreateMonitor*>( pProgressDlg.get() )->SetCurrentPosition( nDocNo );
                             else {
@@ -1394,7 +1395,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
                                 uno::Sequence< beans::PropertyValue > aOptions( rMergeDescriptor.aPrintOptions );
                                 lcl_PreparePrinterOptions( rMergeDescriptor.aPrintOptions, false, aOptions );
 
-                                pWorkView->StartPrint( aOptions, IsMergeSilent(), rMergeDescriptor.bPrintAsync );
+                                pWorkView->StartPrint( aOptions, bIsMergeSilent, rMergeDescriptor.bPrintAsync );
                                 // some GetPrinter functions have a true default, so keep the false
                                 SfxPrinter* pDocPrt = pWorkView->GetPrinter( false );
                                 JobSetup aJobSetup = pDocPrt ? pDocPrt->GetJobSetup() : pWorkView->GetJobSetup();
@@ -1533,7 +1534,7 @@ bool SwDBManager::MergeMailFiles(SwWrtShell* pSourceShell,
                     // print the target document
                     uno::Sequence< beans::PropertyValue > aOptions( rMergeDescriptor.aPrintOptions );
                     lcl_PreparePrinterOptions( rMergeDescriptor.aPrintOptions, true, aOptions );
-                    pTargetView->ExecPrint( aOptions, IsMergeSilent(), rMergeDescriptor.bPrintAsync );
+                    pTargetView->ExecPrint( aOptions, bIsMergeSilent, rMergeDescriptor.bPrintAsync );
                 }
 
                 if( IsMergeOk() && bMT_SHELL )