1 /* java.beans.DesignMode 2 Copyright (C) 1999 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 19 02111-1307 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package java.beans; 40 41 /** 42 * <code>BeanContextChild</code> implementors implement this to get information about whether they are in a design time or runtime environment. 43 * The reason this is restricted to <code>BeanContextChild</code>ren is that 44 * only things in the <code>BeanContext</code> hierarchy are given this 45 * information in the first place. 46 * 47 * @author John Keiser 48 * @since JDK1.2 49 * @see java.beans.beancontext.BeanContextChild 50 */ 51 52 public interface DesignMode { 53 /** 54 * Use this name when firing <code>PropertyChangeEvent</code>s from your Bean. 55 * @fixme Check whether PROPERTYNAME is set to same value as Sun. 56 */ 57 String PROPERTYNAME = "designTime"; 58 59 /** 60 * The environment will call this method on your 61 * <code>BeanContextChild</code> when it is registered in a parent 62 * <code>BeanContext</code> or when behavior needs to switch from 63 * design time to runtime behavior (or vice versa). 64 * <P> 65 * 66 * <code>BeanContext</code>s are required to fire 67 * <code>PropertyChangeEvent</code>s when properties change. 68 * <code>designTime</code> is a property, and therefore when you 69 * implement <code>setDesignTime()</code>, you need to fire a 70 * <code>PropertyChangeEvent</code> with the old value, the new 71 * value and using <code>PROPERTYNAME</code> as the property name. 72 * 73 * @param designTime the new value of design time, 74 * <code>true</code> if it is design time, 75 * <code>false</code> if it is runtime. 76 * 77 * @fixme I'm frankly not really sure whether it's the case that 78 * the BeanContext can <em>change</em> the status of the Bean from 79 * design time to runtime. But it appears that it may be so. 80 * 81 * @see java.util.PropertyChangeEvent 82 * @see java.beans.beancontext.BeanContext 83 * @see #PROPERTYNAME 84 */ setDesignTime(boolean designTime)85 void setDesignTime(boolean designTime); 86 87 /** 88 * This method should tell whether it is design time or runtime. 89 * @return <code>true</code> if design time, <code>false</code> if 90 * runtime. 91 */ isDesignTime()92 boolean isDesignTime(); 93 } 94