| /* |
| * Copyright (c) 1998, 2001, 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.colorchooser; |
| |
| import javax.swing.*; |
| import javax.swing.event.*; |
| import java.awt.Color; |
| import java.io.Serializable; |
| |
| /** |
| * A generic implementation of <code>ColorSelectionModel</code>. |
| * |
| * @author Steve Wilson |
| * |
| * @see java.awt.Color |
| */ |
| public class DefaultColorSelectionModel implements ColorSelectionModel, Serializable { |
| |
| /** |
| * Only one <code>ChangeEvent</code> is needed per model instance |
| * since the event's only (read-only) state is the source property. |
| * The source of events generated here is always "this". |
| */ |
| protected transient ChangeEvent changeEvent = null; |
| |
| protected EventListenerList listenerList = new EventListenerList(); |
| |
| private Color selectedColor; |
| |
| /** |
| * Creates a <code>DefaultColorSelectionModel</code> with the |
| * current color set to <code>Color.white</code>. This is |
| * the default constructor. |
| */ |
| public DefaultColorSelectionModel() { |
| selectedColor = Color.white; |
| } |
| |
| /** |
| * Creates a <code>DefaultColorSelectionModel</code> with the |
| * current color set to <code>color</code>, which should be |
| * non-<code>null</code>. Note that setting the color to |
| * <code>null</code> is undefined and may have unpredictable |
| * results. |
| * |
| * @param color the new <code>Color</code> |
| */ |
| public DefaultColorSelectionModel(Color color) { |
| selectedColor = color; |
| } |
| |
| /** |
| * Returns the selected <code>Color</code> which should be |
| * non-<code>null</code>. |
| * |
| * @return the selected <code>Color</code> |
| */ |
| public Color getSelectedColor() { |
| return selectedColor; |
| } |
| |
| /** |
| * Sets the selected color to <code>color</code>. |
| * Note that setting the color to <code>null</code> |
| * is undefined and may have unpredictable results. |
| * This method fires a state changed event if it sets the |
| * current color to a new non-<code>null</code> color; |
| * if the new color is the same as the current color, |
| * no event is fired. |
| * |
| * @param color the new <code>Color</code> |
| */ |
| public void setSelectedColor(Color color) { |
| if (color != null && !selectedColor.equals(color)) { |
| selectedColor = color; |
| fireStateChanged(); |
| } |
| } |
| |
| |
| /** |
| * Adds a <code>ChangeListener</code> to the model. |
| * |
| * @param l the <code>ChangeListener</code> to be added |
| */ |
| public void addChangeListener(ChangeListener l) { |
| listenerList.add(ChangeListener.class, l); |
| } |
| |
| /** |
| * Removes a <code>ChangeListener</code> from the model. |
| * @param l the <code>ChangeListener</code> to be removed |
| */ |
| public void removeChangeListener(ChangeListener l) { |
| listenerList.remove(ChangeListener.class, l); |
| } |
| |
| /** |
| * Returns an array of all the <code>ChangeListener</code>s added |
| * to this <code>DefaultColorSelectionModel</code> with |
| * <code>addChangeListener</code>. |
| * |
| * @return all of the <code>ChangeListener</code>s added, or an empty |
| * array if no listeners have been added |
| * @since 1.4 |
| */ |
| public ChangeListener[] getChangeListeners() { |
| return listenerList.getListeners(ChangeListener.class); |
| } |
| |
| /** |
| * Runs each <code>ChangeListener</code>'s |
| * <code>stateChanged</code> method. |
| * |
| * <!-- @see #setRangeProperties //bad link--> |
| * @see EventListenerList |
| */ |
| protected void fireStateChanged() |
| { |
| Object[] listeners = listenerList.getListenerList(); |
| for (int i = listeners.length - 2; i >= 0; i -=2 ) { |
| if (listeners[i] == ChangeListener.class) { |
| if (changeEvent == null) { |
| changeEvent = new ChangeEvent(this); |
| } |
| ((ChangeListener)listeners[i+1]).stateChanged(changeEvent); |
| } |
| } |
| } |
| |
| } |