/*
* JComponentActionSetCustomForegroundSingleton,
* singleton action to set a custom foreground color of a JComponent.
* Copyright (C) 2007 - 2011 Achim Westermann, created on 10.12.2004, 13:48:55
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* Achim.Westermann@gmx.de
*
*/
package info.monitorenter.gui.chart.events;
import info.monitorenter.gui.chart.Chart2D;
import info.monitorenter.gui.chart.controls.LayoutFactory.PropertyChangeCheckBoxMenuItem;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.util.HashMap;
import java.util.Map;
import javax.swing.JColorChooser;
import javax.swing.JComponent;
/**
* Singleton <code>Action</code> that sets a custom foreground color of the
* corresponding <code>JComponent</code> by showing a modal color chooser.
* <p>
* Only one instance per target component may exist.
* <p>
*
* @see info.monitorenter.gui.chart.events.JComponentActionSetCustomForeground
*
*
* @author <a href="mailto:Achim.Westermann@gmx.de">Achim Westermann </a>
*
* @version $Revision: 1.8 $
*/
public final class JComponentActionSetCustomForegroundSingleton extends AJComponentAction {
/**
* Generated serial version ID.
*/
private static final long serialVersionUID = 3904680491952451890L;
/**
* Reference to the last custom color chosen to check wether the corresponding
* menu is selected.
*/
private Color m_lastChosenColor;
/**
* Map for instances.
*/
private static Map<String, JComponentActionSetCustomForegroundSingleton> instances;
static {
JComponentActionSetCustomForegroundSingleton.instances = new HashMap<String, JComponentActionSetCustomForegroundSingleton>();
}
/**
* Returns the single instance for the given component, potentially creating
* it.
* <p>
*
* If an instance for the given component had been created the description
* String is ignored.
* <p>
*
* @param component
* the component to get the instance for (works as key).
*
* @param description
* the description to use (ignored if instance for component has
* been created before).
*
* @return the single instance for the given component.
*/
public static JComponentActionSetCustomForegroundSingleton getInstance(
final JComponent component, final String description) {
JComponentActionSetCustomForegroundSingleton result = JComponentActionSetCustomForegroundSingleton.instances
.get(JComponentActionSetCustomForegroundSingleton.key(component));
if (result == null) {
result = new JComponentActionSetCustomForegroundSingleton(component, description);
JComponentActionSetCustomForegroundSingleton.instances.put(
JComponentActionSetCustomForegroundSingleton.key(component), result);
}
return result;
}
/**
* Creates a key for the component for internal storage.
*
* @param component
* the component for the internal storage key to compute.
*
* @return a key for the component for internal storage.
*/
private static String key(final JComponent component) {
return component.getClass().getName() + component.hashCode();
}
/**
* Create an <code>Action</code> that accesses the trace and identifies
* itself with the given action String.
* <p>
*
* @param component
* the target the action will work on.
*
* @param description
* the descriptive <code>String</code> that will be displayed by
* {@link javax.swing.AbstractButton} subclasses that get this
* <code>Action</code> assigned (
* {@link javax.swing.AbstractButton#setAction(javax.swing.Action)}).
*/
private JComponentActionSetCustomForegroundSingleton(final JComponent component,
final String description) {
super(component, description);
component.addPropertyChangeListener(Chart2D.PROPERTY_FOREGROUND_COLOR, this);
}
/**
* @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
*/
public void actionPerformed(final ActionEvent e) {
Color chosen = JColorChooser.showDialog(this.m_component, "choose background color for "
+ this.m_component.getName(), this.m_component.getBackground());
if (chosen != null) {
this.m_lastChosenColor = chosen;
this.m_component.setForeground(chosen);
}
}
/**
* @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
*/
public void propertyChange(final PropertyChangeEvent evt) {
String property = evt.getPropertyName();
if (property.equals(Chart2D.PROPERTY_FOREGROUND_COLOR)) {
Color newColor = (Color) evt.getNewValue();
if (newColor.equals(this.m_lastChosenColor)) {
this.firePropertyChange(PropertyChangeCheckBoxMenuItem.PROPERTY_SELECTED,
new Boolean(false), new Boolean(true));
} else {
this.firePropertyChange(PropertyChangeCheckBoxMenuItem.PROPERTY_SELECTED,
new Boolean(true), new Boolean(false));
}
}
}
}