Added gotoEnd(). We position the cursor at end of menu.

Side effect is cursor changes colors (in my menus),
when going up vs. going down.

door.h

@@ -386,7 +386,7 @@ public:
   /**
    * Default Goto constructor copier
    */
-  Goto(Goto &) = default;
+  Goto(const Goto &) = default;
   void set(int xpos, int ypos);
   friend std::ostream &operator<<(std::ostream &os, const Goto &g);
 };
@@ -592,6 +592,7 @@ public:
    */
   bool update(Door &d);
   void update(Door &d, int line);
+  door::Goto gotoEnd(void);
 
   friend std::ostream &operator<<(std::ostream &os, const Panel &p);
 };

panel.cpp

@@ -242,6 +242,19 @@ void Panel::update(Door &d, int line) {
   d << *l;
 }
 
+door::Goto Panel::gotoEnd(void) {
+  int row = y;
+  int style = (int)border_style;
+  if (style > 0)
+    ++row;
+  row += lines.size();
+  int col = x;
+  if (style > 0)
+    col += 2;
+  col += width;
+  return door::Goto(col, row);
+}
+
 // operator<< Panel is called to output the Menu.
 // Menu has been massively changed to use Render instead of Colorizer.
 
@@ -590,8 +603,10 @@ int Menu::choose(Door &door) {
           // *this->update(door, si);
           update(door, si);
         }
-        // Currently, the cursor is beside the last line updated.  Where should
-        // the cursor go?  Should I place it back at the end of the panel?
+        // Cursor is positioned at the end of the panel/menu.
+        // The cursor changes colors as you arrow up or down.
+        // Interesting!
+        door << gotoEnd();
       }
       // door << flush;
       // door.update();