rempanels.html

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<TITLE>Removing a Color Chooser Panel from a JColorChooser Dialog
(Java Developers Almanac Example)
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<META CONTENT="Patrick Chan" NAME="AUTHOR">
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    <B><A HREF="../javax.swing.colorchooser/pkg.html">javax.swing.colorchooser</A></B><font color="#666666" SIZE="-2">
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        <B><A HREF="../javax.swing.colorchooser/pkg.html#The%20Color%20Chooser%20Panel">The Color Chooser Panel</A></B><font color="#666666" SIZE="-2">
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  <h3>
    e880.  
    Removing a Color Chooser Panel from a JColorChooser Dialog</h3>

Removing chooser panels is simply a matter of <code>removeChooserPanel()</code>.
The issue is to identify the panels that are to be kept.  There are
three chooser panels in the default <code>JColorChooser</code>
dialog. Although each is implemented by a class in the
<code>javax.swing.colorchooser</code> package, these classes are not public.
This example demonstrates how to identify these panels by class name.


<pre>
    JColorChooser chooser = new JColorChooser();
    
    // Retrieve the current set of panels
    AbstractColorChooserPanel[] oldPanels = chooser.getChooserPanels();
    
    // Remove panels
    for (int i=0; i&lt;oldPanels.length; i++) {
        String clsName = oldPanels[i].getClass().getName();
        if (clsName.equals("javax.swing.colorchooser.DefaultSwatchChooserPanel")) {
            // Remove swatch chooser if desired
            chooser.removeChooserPanel(oldPanels[i]);
        } else if (clsName.equals("javax.swing.colorchooser.DefaultRGBChooserPanel")) {
            // Remove rgb chooser if desired
            chooser.removeChooserPanel(oldPanels[i]);
        } else if (clsName.equals("javax.swing.colorchooser.DefaultHSBChooserPanel")) {
            // Remove hsb chooser if desired
            chooser.removeChooserPanel(oldPanels[i]);
        }
    }
    
    // This preview pane simply displays the currently selected color.
    public class MyPreviewPane extends JComponent {
        // The currently selected color
        Color curColor;
    
        public MyPreviewPane(JColorChooser chooser) {
            // Initialize the currently selected color
            curColor = chooser.getColor();
    
            // Add listener on model to detect changes to selected color
            ColorSelectionModel model = chooser.getSelectionModel();
            model.addChangeListener(new ChangeListener() {
                public void stateChanged(ChangeEvent evt) {
                    ColorSelectionModel model = (ColorSelectionModel)evt.getSource();
    
                    // Get the new color value
                    curColor = model.getSelectedColor();
                }
            }) ;
    
            // Set a preferred size
            setPreferredSize(new Dimension(<font color="#0066ff"><i>50</i></font>, <font color="#0066ff"><i>50</i></font>));
        }
    
        // Paint current color
        public void paint(Graphics g) {
            g.setColor(curColor);
            g.fillRect(0, 0, getWidth()-1, getHeight()-1);
        }
    }
</pre>
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            &nbsp;Related Examples
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e879. <a class="eglink" href="GetPanels.html?l=rel">
    Retrieving the Color Chooser Panels in a JColorChooser Dialog
</a>
<br>

e881. <a class="eglink" href="MovePanels.html?l=rel">
    Setting the Order of the Color Chooser Panel Tabs in a JColorChooser Dialog
</a>
<br>

e882. <a class="eglink" href="CustPanel.html?l=rel">
    Adding a Custom Color Chooser Panel to a JColorChooser Dialog
</a>
<br>


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<br>
        See also: 
<a class="eglink" href="/egs/javax.swing.colorchooser/pkg.html?l=rel#Events">
    Events
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.swing.colorchooser/pkg.html?l=rel#The%20Preview%20Panel">
    The Preview Panel
</a>&nbsp;&nbsp;

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