001//////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code for adherence to a set of rules. 003// Copyright (C) 2001-2002 Oliver Burn 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018//////////////////////////////////////////////////////////////////////////////// 019 020/* 021 * %W% %E% 022 * 023 * Copyright 1997, 1998 Sun Microsystems, Inc. All Rights Reserved. 024 * 025 * Redistribution and use in source and binary forms, with or 026 * without modification, are permitted provided that the following 027 * conditions are met: 028 * 029 * - Redistributions of source code must retain the above copyright 030 * notice, this list of conditions and the following disclaimer. 031 * 032 * - Redistribution in binary form must reproduce the above 033 * copyright notice, this list of conditions and the following 034 * disclaimer in the documentation and/or other materials 035 * provided with the distribution. 036 * 037 * Neither the name of Sun Microsystems, Inc. or the names of 038 * contributors may be used to endorse or promote products derived 039 * from this software without specific prior written permission. 040 * 041 * This software is provided "AS IS," without a warranty of any 042 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 043 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 044 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY 045 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY 046 * DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT OF OR 047 * RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE OR 048 * ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE 049 * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, 050 * SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER 051 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF 052 * THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS 053 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 054 * 055 * You acknowledge that this software is not designed, licensed or 056 * intended for use in the design, construction, operation or 057 * maintenance of any nuclear facility. 058 */ 059 060 061package com.puppycrawl.tools.checkstyle.gui; 062 063import java.util.EventObject; 064import javax.swing.CellEditor; 065import javax.swing.event.CellEditorListener; 066import javax.swing.event.ChangeEvent; 067import javax.swing.event.EventListenerList; 068 069/** 070 * A base class for CellEditors, providing default implementations for all 071 * methods in the CellEditor interface and support for managing a series 072 * of listeners. 073 * 074 * <a href="http://java.sun.com/products/jfc/tsc/articles/treetable1/index.html">Original Source Location</a> 075 * 076 * @author Philip Milne 077 */ 078public class AbstractCellEditor implements CellEditor 079{ 080 private final EventListenerList listenerList = new EventListenerList(); 081 082 /** @see CellEditor */ 083 @Override 084 public Object getCellEditorValue() 085 { 086 return null; 087 } 088 089 /** @see CellEditor */ 090 @Override 091 public boolean isCellEditable(EventObject e) 092 { 093 return true; 094 } 095 096 /** @see CellEditor */ 097 @Override 098 public boolean shouldSelectCell(EventObject anEvent) 099 { 100 return false; 101 } 102 103 /** @see CellEditor */ 104 @Override 105 public boolean stopCellEditing() 106 { 107 return true; 108 } 109 110 /** @see CellEditor */ 111 @Override 112 public void cancelCellEditing() 113 { 114 } 115 116 /** @see CellEditor */ 117 @Override 118 public void addCellEditorListener(CellEditorListener l) 119 { 120 listenerList.add(CellEditorListener.class, l); 121 } 122 123 /** @see CellEditor */ 124 @Override 125 public void removeCellEditorListener(CellEditorListener l) 126 { 127 listenerList.remove(CellEditorListener.class, l); 128 } 129 130 /* 131 * Notify all listeners that have registered interest for 132 * notification on this event type. 133 * @see EventListenerList 134 */ 135 protected void fireEditingStopped() 136 { 137 // Guaranteed to return a non-null array 138 final Object[] listeners = listenerList.getListenerList(); 139 // Process the listeners last to first, notifying 140 // those that are interested in this event 141 for (int i = listeners.length - 2; i >= 0; i -= 2) { 142 if (listeners[i] == CellEditorListener.class) { 143 ((CellEditorListener) listeners[i + 1]).editingStopped(new ChangeEvent(this)); 144 } 145 } 146 } 147 148 /* 149 * Notify all listeners that have registered interest for 150 * notification on this event type. 151 * @see EventListenerList 152 */ 153 protected void fireEditingCanceled() 154 { 155 // Guaranteed to return a non-null array 156 final Object[] listeners = listenerList.getListenerList(); 157 // Process the listeners last to first, notifying 158 // those that are interested in this event 159 for (int i = listeners.length - 2; i >= 0; i -= 2) { 160 if (listeners[i] == CellEditorListener.class) { 161 ((CellEditorListener) listeners[i + 1]).editingCanceled(new ChangeEvent(this)); 162 } 163 } 164 } 165}