| /* |
| * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing; |
| |
| import javax.swing.event.*; |
| import java.util.EventObject; |
| import java.io.Serializable; |
| |
| /** |
| * |
| * A base class for <code>CellEditors</code>, providing default |
| * implementations for the methods in the <code>CellEditor</code> |
| * interface except <code>getCellEditorValue()</code>. |
| * Like the other abstract implementations in Swing, also manages a list |
| * of listeners. |
| * |
| * <p> |
| * <strong>Warning:</strong> |
| * Serialized objects of this class will not be compatible with |
| * future Swing releases. The current serialization support is |
| * appropriate for short term storage or RMI between applications running |
| * the same version of Swing. As of 1.4, support for long term storage |
| * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| * has been added to the <code>java.beans</code> package. |
| * Please see {@link java.beans.XMLEncoder}. |
| * |
| * @author Philip Milne |
| * @since 1.3 |
| */ |
| |
| public abstract class AbstractCellEditor implements CellEditor, Serializable { |
| |
| protected EventListenerList listenerList = new EventListenerList(); |
| transient protected ChangeEvent changeEvent = null; |
| |
| // Force this to be implemented. |
| // public Object getCellEditorValue() |
| |
| /** |
| * Returns true. |
| * @param e an event object |
| * @return true |
| */ |
| public boolean isCellEditable(EventObject e) { |
| return true; |
| } |
| |
| /** |
| * Returns true. |
| * @param anEvent an event object |
| * @return true |
| */ |
| public boolean shouldSelectCell(EventObject anEvent) { |
| return true; |
| } |
| |
| /** |
| * Calls <code>fireEditingStopped</code> and returns true. |
| * @return true |
| */ |
| public boolean stopCellEditing() { |
| fireEditingStopped(); |
| return true; |
| } |
| |
| /** |
| * Calls <code>fireEditingCanceled</code>. |
| */ |
| public void cancelCellEditing() { |
| fireEditingCanceled(); |
| } |
| |
| /** |
| * Adds a <code>CellEditorListener</code> to the listener list. |
| * @param l the new listener to be added |
| */ |
| public void addCellEditorListener(CellEditorListener l) { |
| listenerList.add(CellEditorListener.class, l); |
| } |
| |
| /** |
| * Removes a <code>CellEditorListener</code> from the listener list. |
| * @param l the listener to be removed |
| */ |
| public void removeCellEditorListener(CellEditorListener l) { |
| listenerList.remove(CellEditorListener.class, l); |
| } |
| |
| /** |
| * Returns an array of all the <code>CellEditorListener</code>s added |
| * to this AbstractCellEditor with addCellEditorListener(). |
| * |
| * @return all of the <code>CellEditorListener</code>s added or an empty |
| * array if no listeners have been added |
| * @since 1.4 |
| */ |
| public CellEditorListener[] getCellEditorListeners() { |
| return listenerList.getListeners(CellEditorListener.class); |
| } |
| |
| /** |
| * Notifies all listeners that have registered interest for |
| * notification on this event type. The event instance |
| * is created lazily. |
| * |
| * @see EventListenerList |
| */ |
| protected void fireEditingStopped() { |
| // Guaranteed to return a non-null array |
| Object[] listeners = listenerList.getListenerList(); |
| // Process the listeners last to first, notifying |
| // those that are interested in this event |
| for (int i = listeners.length-2; i>=0; i-=2) { |
| if (listeners[i]==CellEditorListener.class) { |
| // Lazily create the event: |
| if (changeEvent == null) |
| changeEvent = new ChangeEvent(this); |
| ((CellEditorListener)listeners[i+1]).editingStopped(changeEvent); |
| } |
| } |
| } |
| |
| /** |
| * Notifies all listeners that have registered interest for |
| * notification on this event type. The event instance |
| * is created lazily. |
| * |
| * @see EventListenerList |
| */ |
| protected void fireEditingCanceled() { |
| // Guaranteed to return a non-null array |
| Object[] listeners = listenerList.getListenerList(); |
| // Process the listeners last to first, notifying |
| // those that are interested in this event |
| for (int i = listeners.length-2; i>=0; i-=2) { |
| if (listeners[i]==CellEditorListener.class) { |
| // Lazily create the event: |
| if (changeEvent == null) |
| changeEvent = new ChangeEvent(this); |
| ((CellEditorListener)listeners[i+1]).editingCanceled(changeEvent); |
| } |
| } |
| } |
| } |