java.beans

Interface Visibility

Contents
  • 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.

    • 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().

Document created the 11/06/2005, last modified the 04/03/2020
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