Module java.desktop
Package java.beans

## Interface Visibility

- All Known Subinterfaces:
    `BeanContext`, `BeanContextServices`
  All Known Implementing Classes:
    `BeanContextServicesSupport`, `BeanContextSupport`

      public interface Visibility

  Under some circumstances a bean may be run on servers where a GUI is not available. This interface can be used to query a bean to determine whether it absolutely needs a gui, and to advise the bean whether a GUI is available.

  This interface is for expert developers, and is not needed for normal simple beans. To avoid confusing end-users we avoid using getXXX setXXX design patterns for these methods.

  Since:
    1.1

- - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `avoidingGui()` | Determines whether this bean is avoiding using a GUI.
    `void` | `dontUseGui()` | This method instructs the bean that it should not use the Gui.
    `boolean` | `needsGui()` | Determines whether this bean needs a GUI.
    `void` | `okToUseGui()` | This method instructs the bean that it is OK to use the Gui.

- - ### Method Detail

    - #### needsGui

          boolean needsGui()

      Determines whether this bean needs a GUI.
      Returns:
        True if the bean absolutely needs a GUI available in order to get its work done.

    - #### dontUseGui

          void dontUseGui()

      This method instructs the bean that it should not use the Gui.

    - #### okToUseGui

          void okToUseGui()

      This method instructs the bean that it is OK to use the Gui.

    - #### avoidingGui

          boolean avoidingGui()

      Determines whether this bean is avoiding using a GUI.
      Returns:
        true if the bean is currently avoiding use of the Gui. e.g. due to a call on dontUseGui().