| /* DefaultColorSelectionModel.java -- |
| Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.colorchooser; |
| |
| import java.awt.Color; |
| import java.io.Serializable; |
| |
| import javax.swing.event.ChangeEvent; |
| import javax.swing.event.ChangeListener; |
| import javax.swing.event.EventListenerList; |
| |
| /** |
| * This is the default implementation of the ColorSelectionModel interface |
| * that JColorChoosers use. |
| * |
| * @author Andrew Selkirk |
| * @version 1.0 |
| */ |
| public class DefaultColorSelectionModel implements ColorSelectionModel, |
| Serializable |
| { |
| /** DOCUMENT ME! */ |
| private static final long serialVersionUID = -8117143602864778804L; |
| |
| /** The currently selected color. */ |
| private Color selectedColor; |
| |
| /** The ChangeEvent fired to all ChangeListeners. */ |
| protected transient ChangeEvent changeEvent = new ChangeEvent(this); |
| |
| /** The list of listeners. */ |
| protected EventListenerList listenerList = new EventListenerList(); |
| |
| /** |
| * Creates a new color selection model with the default white color. |
| */ |
| public DefaultColorSelectionModel() |
| { |
| this(Color.white); |
| } |
| |
| /** |
| * Creates a new color selection model with a given selected color. |
| * |
| * @param color The initial color. |
| * |
| * @throws Error If the color is null. |
| */ |
| public DefaultColorSelectionModel(Color color) |
| { |
| super(); |
| if (color == null) |
| throw new Error("ColorSelectionModel cannot be set to have null color."); |
| this.selectedColor = color; |
| } |
| |
| /** |
| * Returns the selected color. |
| * |
| * @return The selected color. |
| */ |
| public Color getSelectedColor() |
| { |
| return selectedColor; |
| } |
| |
| /** |
| * This method sets the color. |
| * |
| * @param color The color to set. |
| * |
| * @throws Error If the color is set. |
| */ |
| public void setSelectedColor(Color color) |
| { |
| if (color == null) |
| throw new Error("ColorSelectionModel cannot be set to have null color."); |
| if (color != selectedColor) |
| { |
| this.selectedColor = color; |
| fireStateChanged(); |
| } |
| } |
| |
| /** |
| * Adds a listener to this model. |
| * |
| * @param listener The listener to add. |
| */ |
| public void addChangeListener(ChangeListener listener) |
| { |
| listenerList.add(ChangeListener.class, listener); |
| } |
| |
| /** |
| * Removes a listener from this model. |
| * |
| * @param listener The listener to remove. |
| */ |
| public void removeChangeListener(ChangeListener listener) |
| { |
| listenerList.remove(ChangeListener.class, listener); |
| } |
| |
| /** |
| * Returns all currently added <code>ChangeListener</code> objects. |
| * |
| * @return Array of <code>ChangeListener</code> objects. |
| */ |
| public ChangeListener[] getChangeListeners() |
| { |
| return (ChangeListener[]) listenerList.getListeners(ChangeListener.class); |
| } |
| |
| /** |
| * Calls all the <code>stateChanged()</code> method of all added |
| * <code>ChangeListener</code> objects with <code>changeEvent</code> as |
| * argument. |
| */ |
| protected void fireStateChanged() |
| { |
| ChangeListener[] listeners = getChangeListeners(); |
| |
| for (int i = 0; i < listeners.length; i++) |
| listeners[i].stateChanged(changeEvent); |
| } |
| } |