WIP: avoid a segfault when closing tab while dragging an instance.

src/edt/edt/edtEditorOptionsPages.cc

@@ -579,13 +579,18 @@ void
 EditorOptionsInst::update_cell_edits ()
 {
   db::Layout *layout = 0;
+  lay::LayoutView *view = lay::LayoutView::current ();
 
   //  find the layout the cell has to be looked up: that is either the layout of the current instance or
   //  the library selected
   if (mp_ui->lib_cbx->current_library ()) {
     layout = &mp_ui->lib_cbx->current_library ()->layout ();
-  } else {
+  } else if (view && view->cellview (m_cv_index).is_valid ()) {
-    layout = &lay::LayoutView::current ()->cellview (m_cv_index)->layout ();
+    layout = &view->cellview (m_cv_index)->layout ();
+  }
+
+  if (! layout) {
+    return;
   }
 
   std::pair<bool, db::pcell_id_type> pc = layout->pcell_by_name (tl::to_string (mp_ui->cell_le->text ()).c_str ());

src/edt/edt/edtPlugin.cc

@@ -403,11 +403,10 @@ activate_service (lay::LayoutView *view, const lay::PluginDeclaration *pd, bool
     return;
   }
 
-  //  @@@ TODO: this is very inefficient as each "activate" will regenerate the tabs
+  //  TODO: this is very inefficient as each "activate" will regenerate the tabs
   for (std::vector<edt::EditorOptionsPage *>::const_iterator op = eo_pages->pages ().begin (); op != eo_pages->pages ().end (); ++op) {
     (*op)->activate (((*op)->plugin_declaration () == pd || ! (*op)->plugin_declaration ()) && active);
   }
-
 }
 
 void

src/lay/lay/layMainWindow.cc

@@ -537,12 +537,11 @@ MainWindow::MainWindow (QApplication *app, lay::Plugin *plugin_parent, const cha
   m_libs_visible = true;
 
   mp_eo_dock_widget = new QDockWidget (QObject::tr ("Editor Options"), this);
-  mp_eo_dock_widget->hide ();
   mp_eo_dock_widget->setObjectName (QString::fromUtf8 ("eo_dock_widget"));
   mp_eo_stack = new ControlWidgetStack (mp_eo_dock_widget, "eo_stack");
   mp_eo_dock_widget->setWidget (mp_eo_stack);
   connect (mp_eo_dock_widget, SIGNAL (visibilityChanged (bool)), this, SLOT (dock_widget_visibility_changed (bool)));
-  m_eo_visible = false;
+  m_eo_visible = true;
 
   mp_bm_dock_widget = new QDockWidget (QObject::tr ("Bookmarks"), this);
   mp_bm_dock_widget->setObjectName (QString::fromUtf8 ("bookmarks_dock_widget"));
@@ -939,6 +938,7 @@ MainWindow::show ()
 void
 MainWindow::close_all ()
 {
+  cancel ();
   mp_layer_toolbox->set_view (0);
 
   //  try a smooth shutdown of the current view
@@ -1151,9 +1151,18 @@ MainWindow::config_finalize ()
   // Not set the window state: this ensures we have handled cfg_window_geometry
   // before we restore the state
   if (! m_config_window_state.empty ()) {
+
     QByteArray state = QByteArray::fromBase64 (m_config_window_state.c_str ());
     m_config_window_state.clear ();
+
+    bool eo_visible = m_eo_visible;
+
     restoreState (state);
+
+    //  Keep the editor options visibility state
+    m_eo_visible = eo_visible;
+    show_dock_widget (mp_eo_dock_widget, m_eo_visible);
+
   }
 
   // Update the default grids menu if necessary
@@ -3025,6 +3034,8 @@ MainWindow::close_view (int index)
 {
   if (view (index)) {
 
+    cancel ();
+
     //  this suppresses view_selected events that would otherwise be created
     bool f = m_disable_tab_selected;
     m_disable_tab_selected = true;