switchToPrevWindow() is looking for another window if no previous window was found

ChangeLog

@@ -1,5 +1,7 @@
 2016-08-20  Markus Gans  <guru.mail@muenster.de>
 	* Switch back to the own dialog when you closing a dialog menu
+	* switchToPrevWindow() is looking for another window 
+	  if no previous window was found
 
 2016-08-14  Markus Gans  <guru.mail@muenster.de>
 	* Screen characters now have a transparent 

src/fdialog.cpp

@@ -730,11 +730,16 @@ void FDialog::onMouseDoubleClick (FMouseEvent* ev)
 
   if ( title_button.contains(gPos) )
   {
+    FWidget* window_focus_widget;
     dialog_menu->unselectItem();
     dialog_menu->hide();
     activateWindow();
     raiseWindow();
-    getWindowFocusWidget()->setFocus();
+    window_focus_widget = getWindowFocusWidget();
+
+    if ( window_focus_widget )
+      window_focus_widget->setFocus();
+  
     setClickedWidget(0);
 
     if ( isModal() )

src/fwindow.cpp

@@ -96,9 +96,6 @@ void FWindow::hide()
   if ( area )
     area->visible = false;
 
-  if ( isDialog() )
-    switchToPrevWindow();
-
   FWidget::hide();
 }
 
@@ -406,9 +403,34 @@ void FWindow::setWindowFocusWidget (FWidget* obj)
 void FWindow::switchToPrevWindow()
 {
   // switch to previous window
-  activatePrevWindow();
+  bool is_activated = activatePrevWindow();
   FWindow* active_window = getActiveWindow();
 
+  if ( ! is_activated )
+  {
+    // no previous window -> looking for another window
+    if ( window_list && window_list->size() > 1 )
+    {
+      widgetList::const_iterator iter, begin;
+      iter  = window_list->end();
+      begin = window_list->begin();
+
+      do
+      {
+        --iter;
+        FWindow* w = static_cast<FWindow*>(*iter);
+
+        if ( w && w != active_window
+           && ! (w->isHiddenWindow() || w->isActiveWindow()) )
+        {
+          setActiveWindow(w);
+          break;
+        }
+      }
+       while ( iter != begin );
+    }
+  }
+
   if ( active_window )
   {
     FWidget* focus_widget = active_window->getWindowFocusWidget();