diff options
Diffstat (limited to 'libjava/classpath/javax/swing/colorchooser/DefaultColorSelectionModel.java')
-rw-r--r-- | libjava/classpath/javax/swing/colorchooser/DefaultColorSelectionModel.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/colorchooser/DefaultColorSelectionModel.java b/libjava/classpath/javax/swing/colorchooser/DefaultColorSelectionModel.java new file mode 100644 index 000000000..07493f6d6 --- /dev/null +++ b/libjava/classpath/javax/swing/colorchooser/DefaultColorSelectionModel.java @@ -0,0 +1,163 @@ +/* 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); + } +} |