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

      All Methods Instance Methods Abstract Methods 
      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().