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1: /* PreferenceChangeEvent - ObjectEvent fired when a Preferences entry changes 2: Copyright (C) 2001 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., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 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: package java.util.prefs; 39: 40: import java.util.EventObject; 41: 42: /** 43: * ObjectEvent fired when a Preferences entry changes. 44: * This event is generated when a entry is added, changed or removed. 45: * When an entry is removed then <code>getNewValue</code> will return null. 46: * <p> 47: * Preference change events are only generated for entries in one particular 48: * preference node. Notification of subnode addition/removal is given by a 49: * <code>NodeChangeEvent</code>. 50: * 51: * @since 1.4 52: * @author Mark Wielaard (mark@klomp.org) 53: */ 54: public class PreferenceChangeEvent extends EventObject { 55: 56: private static final long serialVersionUID = 793724513368024975L; 57: 58: /** 59: * The key of the changed entry. 60: */ 61: private final String key; 62: 63: /** 64: * The new value of the changed entry, or null when the entry was removed. 65: */ 66: private final String newValue; 67: 68: /** 69: * Creates a new PreferenceChangeEvent. 70: * 71: * @param node The source preference node for which an entry was added, 72: * changed or removed 73: * @param key The key of the entry that was added, changed or removed 74: * @param value The new value of the entry that was added or changed, or 75: * null when the entry was removed 76: */ 77: public PreferenceChangeEvent(Preferences node, String key, String value) { 78: super(node); 79: this.key = key; 80: this.newValue = value; 81: } 82: 83: /** 84: * Returns the source Preference node from which an entry was added, 85: * changed or removed. 86: */ 87: public Preferences getNode() { 88: return (Preferences) source; 89: } 90: 91: /** 92: * Returns the key of the entry that was added, changed or removed. 93: */ 94: public String getKey() { 95: return key; 96: } 97: 98: /** 99: * Returns the new value of the entry that was added or changed, or 100: * returns null when the entry was removed. 101: */ 102: public String getNewValue() { 103: return newValue; 104: } 105: }
GNU Classpath (0.20) |