- Create your own by subclassing the AbstractColorChooserPanel class.
- To add a new panel to the existing set, call: public void addChooserPanel(AbstractColorChooserPanel panel)
- To remove it: public AbstractColorChooserPanel removeChooserPanel(AbstractColorChooserPanel panel)
- To replace the existing set of panels: setChooserPanels(AbstractColorChooserPanel panels[ ])
public abstract class AbstractColorChooserPanel extends JPanel {
public AbstractColorChooserPanel();
protected abstract void buildChooser();
protected Color getColorFromModel();
public ColorSelectionModel getColorSelectionModel();
public int getDisplayMnemonicIndex();
public abstract String getDisplayName();
public abstract Icon getLargeDisplayIcon();
public int getMnemonic();
public abstract Icon getSmallDisplayIcon();
public void installChooserPanel(JColorChooser);
public void paint(Graphics);
public void uninstallChooserPanel(JColorChooser);
public abstract void updateChooser();
}
import java.awt.Color;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JColorChooser;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.colorchooser.AbstractColorChooserPanel;
import javax.swing.colorchooser.ColorSelectionModel;
class SystemColorChooserPanel
extends AbstractColorChooserPanel
implements ItemListener {
private static int NOT_FOUND = -1;
JComboBox comboBox;
String labels[] = {
"BLACK",
"BLUE",
"CYAN",
"<Custom>"};
Color colors[] = {
Color.BLACK,
Color.BLUE,
Color.CYAN,
null};
private void setColor(Color newColor) {
int position = findColorPosition(newColor);
comboBox.setSelectedIndex(position);
}
private int findColorLabel(Object label) {
String stringLabel = label.toString();
int position = NOT_FOUND;
for (int i=0,n=labels.length; i<n; i++) {
if (stringLabel.equals(labels[i])) {
position=i;
break;
}
}
return position;
}
private int findColorPosition(Color color) {
int position = colors.length-1;
int colorRGB = color.getRGB();
for (int i=0,n=colors.length; i<n; i++) {
if ((colors[i] != null) && (colorRGB == colors[i].getRGB())) {
position=i;
break;
}
}
return position;
}
public void itemStateChanged(ItemEvent itemEvent) {
int state = itemEvent.getStateChange();
if (state == ItemEvent.SELECTED) {
int position = findColorLabel(itemEvent.getItem());
if ((position != NOT_FOUND) && (position != labels.length-1)) {
ColorSelectionModel selectionModel = getColorSelectionModel();
selectionModel.setSelectedColor(colors[position]);
}
}
}
public String getDisplayName() {
return "SystemColor";
}
public Icon getSmallDisplayIcon() {
return new ImageIcon("yourFile.gif");
}
public Icon getLargeDisplayIcon() {
return new ImageIcon("yourFile.gif");
}
protected void buildChooser() {
comboBox = new JComboBox(labels);
comboBox.addItemListener(this);
add(comboBox);
}
public void updateChooser() {
Color color = getColorFromModel();
setColor(color);
}
}
public class JColorChooserWithCustomSelectionPanel {
public static void main(String[] a) {
JColorChooser colorChooser = new JColorChooser();
colorChooser.addChooserPanel(new SystemColorChooserPanel());
JDialog d = colorChooser.createDialog(null,"",true,colorChooser,null,null);
d.setVisible(true);
}
}
