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+/* 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);
+ }
+}