home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
PC World Komputer 1998 July & August
/
Pcwk78a98.iso
/
Internet
/
Javadraw
/
DATA.Z
/
Visibility.java
< prev
next >
Wrap
Text File
|
1997-08-30
|
2KB
|
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();
}