<interface name="zwlr_layer_shell_v1" version="3">

  <interface name="zwlr_layer_shell_v1" version="4">

        After creating a layer_surface object and setting it up, the client
        must perform an initial commit without any buffer attached.
        The compositor will reply with a layer_surface.configure event.
        The client must acknowledge it and is then allowed to attach a buffer
        to map the surface.

  <interface name="zwlr_layer_surface_v1" version="3">

  <interface name="zwlr_layer_surface_v1" version="4">

      Attaching a null buffer to a layer surface unmaps it.
      Unmapping a layer_surface means that the surface cannot be shown by the
      compositor until it is explicitly mapped again. The layer_surface
      returns to the state it had right after layer_shell.get_layer_surface.
      The client can re-map the surface by performing a commit without any
      buffer attached, waiting for a configure event and handling it as usual.

    <enum name="keyboard_interactivity">
      <description summary="types of keyboard interaction possible for a layer shell surface">
        Types of keyboard interaction possible for layer shell surfaces. The
        rationale for this is twofold: (1) some applications are not interested
        in keyboard events and not allowing them to be focused can improve the
        desktop experience; (2) some applications will want to take exclusive
        keyboard focus.
      </description>
      <entry name="none" value="0">
        <description summary="no keyboard focus is possible">
          This value indicates that this surface is not interested in keyboard
          events and the compositor should never assign it the keyboard focus.
          This is the default value, set for newly created layer shell surfaces.
          This is useful for e.g. desktop widgets that display information or
          only have interaction with non-keyboard input devices.
        </description>
      </entry>
      <entry name="exclusive" value="1">
        <description summary="request exclusive keyboard focus">
          Request exclusive keyboard focus if this surface is above the shell surface layer.
          For the top and overlay layers, the seat will always give
          exclusive keyboard focus to the top-most layer which has keyboard
          interactivity set to exclusive. If this layer contains multiple
          surfaces with keyboard interactivity set to exclusive, the compositor
          determines the one receiving keyboard events in an implementation-
          defined manner. In this case, no guarantee is made when this surface
          will receive keyboard focus (if ever).
          For the bottom and background layers, the compositor is allowed to use
          normal focus semantics.
          This setting is mainly intended for applications that need to ensure
          they receive all keyboard events, such as a lock screen or a password
          prompt.
        </description>
      </entry>
      <entry name="on_demand" value="2" since="4">
        <description summary="request regular keyboard focus semantics">
          This requests the compositor to allow this surface to be focused and
          unfocused by the user in an implementation-defined manner. The user
          should be able to unfocus this surface even regardless of the layer
          it is on.
          Typically, the compositor will want to use its normal mechanism to
          manage keyboard focus between layer shell surfaces with this setting
          and regular toplevels on the desktop layer (e.g. click to focus).
          Nevertheless, it is possible for a compositor to require a special
          interaction to focus or unfocus layer shell surfaces (e.g. requiring
          a click even if focus follows the mouse normally, or providing a
          keybinding to switch focus between layers).
          This setting is mainly intended for desktop shell components (e.g.
          panels) that allow keyboard interaction. Using this option can allow
          implementing a desktop shell that can be fully usable without the
          mouse.
        </description>
      </entry>
    </enum>

        Set to 1 to request that the seat send keyboard events to this layer
        surface. For layers below the shell surface layer, the seat will use
        normal focus semantics. For layers above the shell surface layers, the
        seat will always give exclusive keyboard focus to the top-most layer
        which has keyboard interactivity set to true.

        Set how keyboard events are delivered to this surface. By default,
        layer shell surfaces do not receive keyboard events; this request can
        be used to change this.
        This setting is inherited by child surfaces set by the get_popup
        request.

        Events is double-buffered, see wl_surface.commit.

        Keyboard interactivity is double-buffered, see wl_surface.commit.

      <arg name="keyboard_interactivity" type="uint"/>

      <arg name="keyboard_interactivity" type="uint" enum="keyboard_interactivity"/>

      <entry name="invalid_keyboard_interactivity" value="3" summary="keyboard interactivity is invalid"/>