From b8489223c1c124006dd39b797c692722205ca2ad Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Thu, 23 Sep 2021 01:11:15 +0200
Subject: [PATCH] Fixed #912 (crash when trying to create a cell in an empty
 panel)

---
 src/laybasic/laybasic/layLayoutViewFunctions.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/laybasic/laybasic/layLayoutViewFunctions.cc b/src/laybasic/laybasic/layLayoutViewFunctions.cc
index 5752ef3f4..28ed82c32 100644
--- a/src/laybasic/laybasic/layLayoutViewFunctions.cc
+++ b/src/laybasic/laybasic/layLayoutViewFunctions.cc
@@ -1242,11 +1242,16 @@ LayoutViewFunctions::do_cm_paste (bool interactive)
 void
 LayoutViewFunctions::cm_new_cell ()
 {
+  lay::CellView cv = view ()->cellview (view ()->active_cellview_index ());
+  if (! cv.is_valid ()) {
+    throw tl::Exception (tl::to_string (tr ("No layout present to add a cell to")));
+  }
+
   static double s_new_cell_window_size = 2.0;
   static std::string s_new_cell_cell_name;
 
   NewCellPropertiesDialog cell_prop_dia (view ());
-  if (cell_prop_dia.exec_dialog (& view ()->cellview (view ()->active_cellview_index ())->layout (), s_new_cell_cell_name, s_new_cell_window_size)) {
+  if (cell_prop_dia.exec_dialog (& cv->layout (), s_new_cell_cell_name, s_new_cell_window_size)) {
 
     db::cell_index_type new_ci = view ()->new_cell (view ()->active_cellview_index (), s_new_cell_cell_name.c_str ());
     view ()->select_cell (new_ci, view ()->active_cellview_index ());