- /*
- * @(#)DefaultColorSelectionModel.java 1.14 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- 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>.
- *
- * @version 1.14 01/23/03
- * @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 (ChangeListener[])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);
- }
- }
- }
-
- }