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 Details

    • 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().