getter for ncurses mutex

not sure if the best solution, but works for the moment

TilingWindowManager.cpp

@@ -27,6 +27,11 @@ namespace krikkel::NCurses
         visibleStack.push_back(stackElement);
     }
 
+    std::recursive_mutex *TilingWindowManager::getNCursesMutex()
+    {
+        return ncursesMutex;
+    }
+
     void TilingWindowManager::hideWindow(Window *window)
     {
         if(window->hidden)

include/kNCurses/TilingWindowManager.hpp

@@ -36,7 +36,9 @@ namespace krikkel::NCurses
             typedef std::pair<Window *, windowDimension> WindowStackElement;
 
             TilingWindowManager(NCursesWindow *rootWindow, std::recursive_mutex *ncursesMutex);
+            std::recursive_mutex *getNCursesMutex();
             void addWindow(Window *window, windowDimension size = -1);
+
             int resize(int rows, int cols) override;
             int refresh() override;
             void updateLayout();
@@ -45,6 +47,7 @@ namespace krikkel::NCurses
             void showWindow(Window *window);
 
         protected:
+            /// @todo rename to `nCursesMutex`?
             std::recursive_mutex *ncursesMutex;
             std::list<WindowStackElement> stack, visibleStack;