Binary package “xfce4-xkb-plugin” in ubuntu xenial

xkb layout switch plugin for the Xfce4 panel

 The xkb plugin shows you the current keyboard layout and allows you to
 switch to different defined layouts.
 .
 The plugin itself cannot be used for defining the keyboard
 layouts one wants to use, this is done the XKB way - either
 in your X config or by setxkbmap tool.