Takenumber Window: Keep arranger focused after clicks into the script's window

TakenumberWindow/Takenumber_Window.lua

@@ -659,15 +659,23 @@ end
 function mainloop()
   -- mouseclicks?
   local RMB_state = mouse.cap(mouse.RB)
+  local LMB_state = mouse.cap(mouse.LB)
   local mx = gfx.mouse_x
   local my = gfx.mouse_y
   
   if not mouse.last_RMB_state and gfx.mouse_cap&2 == 2 then
-    -- right click pressed down -> show "right click menu" at mouse cursor
+    -- right click pressed down -> show "right click menu" at mouse cursor and focus arranger afterwards
     rc_menu:show(mx, my)
+    reaper.Main_OnCommand( reaper.NamedCommandLookup('_BR_FOCUS_ARRANGE_WND'), 0 )  --  focus arranger
+  end
+
+  if not mouse.last_LMB_state and gfx.mouse_cap&1 == 1 then
+    -- left click pressed down -> only focus arranger
+    reaper.Main_OnCommand( reaper.NamedCommandLookup('_BR_FOCUS_ARRANGE_WND'), 0 )  --  focus arranger
   end
   
   mouse.last_RMB_state = RMB_state -- store current right mouse button state
+  mouse.last_LMB_state = LMB_state -- store current left mouse button state
 
   drawGui()
   gfx.update()