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83 lines
3.1 KiB
Java
83 lines
3.1 KiB
Java
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/* java.beans.DesignMode
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Copyright (C) 1999 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., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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As a special exception, if you link this library with other files to
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produce an executable, this library does not by itself cause the
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resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why the
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executable file might be covered by the GNU General Public License. */
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package java.beans;
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/**
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* <code>BeanContextChild</code> implementors implement this to get information 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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* Use this name when firing <code>PropertyChangeEvent</code>s from your Bean.
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* @fixme Check whether PROPERTYNAME is set to same value as Sun.
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*/
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public static final 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.util.PropertyChangeEvent
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* @see java.beans.beancontext.BeanContext
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* @see #PROPERTYNAME
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*/
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public 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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public boolean isDesignTime();
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}
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