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Java Source | 1997-03-17 | 1.8 KB | 61 lines |
- /*
- * @(#)Visibility.java 1.5 96/12/06
- *
- * Copyright (c) 1996 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only in
- * accordance with the terms of the license agreement you entered into
- * with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
- * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- *
- * CopyrightVersion bdk_beta
- *
- */
-
- package java.beans;
-
- /**
- * 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.
- * <p>
- * 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.
- */
-
- public interface Visibility {
-
- /**
- * @return True if the bean absolutely needs a GUI available in
- * order to get its work done.
- */
- boolean needsGui();
-
- /**
- * This method instructs the bean that it should not use the Gui.
- */
- void dontUseGui();
-
- /**
- * This method instructs the bean that it is OK to use the Gui.
- */
- void okToUseGui();
-
- /**
- * @return true if the bean is currently avoiding use of the Gui.
- * e.g. due to a call on dontUseGui().
- */
- boolean avoidingGui();
-
- }
-