Package limn.backend.spi

Interface MenuBarHost

public interface MenuBarHost
What a backend asks and tells of a menu bar the system shows. Every call arrives on the UI thread.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    choose(int id)
    The user chose a row of the last reading.
    void
    heldChanged()
    Whether the system's bar holds this bar changed: it went to the window under a fullscreen that covers the system's bar, or came back.
    @Nullable WindowInput
    input()
    What the scene this bar is in hears its window through, or null once the bar is in no scene.
    MenuBarReading
    read()
    Reads the bar as it is now.

  • Method Details

    • read

      MenuBarReading read()
      Reads the bar as it is now. Asked whenever the system brings a menu up to date: when one opens, and before an accelerator is matched.

    • input

      @Nullable WindowInput input()
      What the scene this bar is in hears its window through, or null once the bar is in no scene. A window shows the bar of the scene bound to it: a bar whose answer is not the window's own input belongs to a scene the window has left, and gives way to another.

    • choose

      void choose(int id)
      The user chose a row of the last reading. A number of an older reading does nothing.

    • heldChanged

      void heldChanged()
      Whether the system's bar holds this bar changed: it went to the window under a fullscreen that covers the system's bar, or came back.