96 lines
3.7 KiB
Java
96 lines
3.7 KiB
Java
/* java.beans.DesignMode
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Copyright (C) 1999, 2006, Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.beans;
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/**
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* <code>BeanContextChild</code> implementors implement this to get information
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* about whether they are in a design time or runtime environment.
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* The reason this is restricted to <code>BeanContextChild</code>ren is that
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* only things in the <code>BeanContext</code> hierarchy are given this
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* information in the first place.
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*
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* @author John Keiser
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* @since JDK1.2
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* @see java.beans.beancontext.BeanContextChild
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*/
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public interface DesignMode
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{
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/**
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* Use this name when firing <code>PropertyChangeEvent</code>s from your Bean.
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*/
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String PROPERTYNAME = "designTime";
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/**
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* The environment will call this method on your
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* <code>BeanContextChild</code> when it is registered in a parent
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* <code>BeanContext</code> or when behavior needs to switch from
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* design time to runtime behavior (or vice versa).
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* <P>
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*
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* <code>BeanContext</code>s are required to fire
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* <code>PropertyChangeEvent</code>s when properties change.
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* <code>designTime</code> is a property, and therefore when you
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* implement <code>setDesignTime()</code>, you need to fire a
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* <code>PropertyChangeEvent</code> with the old value, the new
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* value and using <code>PROPERTYNAME</code> as the property name.
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*
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* @param designTime the new value of design time,
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* <code>true</code> if it is design time,
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* <code>false</code> if it is runtime.
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*
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* @fixme I'm frankly not really sure whether it's the case that
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* the BeanContext can <em>change</em> the status of the Bean from
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* design time to runtime. But it appears that it may be so.
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*
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* @see java.beans.PropertyChangeEvent
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* @see java.beans.beancontext.BeanContext
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* @see #PROPERTYNAME
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*/
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void setDesignTime(boolean designTime);
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/**
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* This method should tell whether it is design time or runtime.
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* @return <code>true</code> if design time, <code>false</code> if
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* runtime.
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*/
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boolean isDesignTime();
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}
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