public BasicDesktopPaneUI() 
{

}

 InputMap createInputMap(int condition) 
{
        if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
            Object[] bindings = (Object[])DefaultLookup.get(desktop,
                    this, "Desktop.windowBindings");
            if (bindings != null) {
                return LookAndFeel.makeComponentInputMap(desktop, bindings);
            }
        }
        return null;
}

 protected PropertyChangeListener createPropertyChangeListener() 
{
        return getHandler();
}

Returns the PropertyChangeListener to install on the JDesktopPane.

 public static ComponentUI createUI(JComponent c) 
{
         
        return new BasicDesktopPaneUI();
}

 InputMap getInputMap(int condition) 
{
        if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
            return createInputMap(condition);
        }
        else if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
            return (InputMap)DefaultLookup.get(desktop, this,
                    "Desktop.ancestorInputMap");
        }
        return null;
}

 public Dimension getMaximumSize(JComponent c) 
{
        return maxSize;
}

 public Dimension getMinimumSize(JComponent c) 
{
        return minSize;
}

 public Dimension getPreferredSize(JComponent c) 
{
return null;
}

 protected  void installDefaults() 
{
        if (desktop.getBackground() == null ||
            desktop.getBackground() instanceof UIResource) {
            desktop.setBackground(UIManager.getColor("Desktop.background"));
        }
        LookAndFeel.installProperty(desktop, "opaque", Boolean.TRUE);
}

 protected  void installDesktopManager() 
{
        desktopManager = desktop.getDesktopManager();
        if(desktopManager == null) {
            desktopManager = new BasicDesktopManager();
            desktop.setDesktopManager(desktopManager);
        }
}

 protected  void installKeyboardActions() 
{
        InputMap inputMap = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
        if (inputMap != null) {
            SwingUtilities.replaceUIInputMap(desktop,
                        JComponent.WHEN_IN_FOCUSED_WINDOW, inputMap);
        }
        inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
        if (inputMap != null) {
            SwingUtilities.replaceUIInputMap(desktop,
                        JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
                        inputMap);
        }
        LazyActionMap.installLazyActionMap(desktop, BasicDesktopPaneUI.class,
                "DesktopPane.actionMap");
        registerKeyboardActions();
}

 protected  void installListeners() 
{
        pcl = createPropertyChangeListener();
        desktop.addPropertyChangeListener(pcl);
}

Installs the PropertyChangeListener returned from createPropertyChangeListener on the JDesktopPane.

 public  void installUI(JComponent c) 
{
        desktop = (JDesktopPane)c;
        installDefaults();
        installDesktopManager();
        installListeners();
        installKeyboardActions();
}

 static  void loadActionMap(LazyActionMap map) 
{
        map.put(new Actions(Actions.RESTORE));
        map.put(new Actions(Actions.CLOSE));
        map.put(new Actions(Actions.MOVE));
        map.put(new Actions(Actions.RESIZE));
        map.put(new Actions(Actions.LEFT));
        map.put(new Actions(Actions.SHRINK_LEFT));
        map.put(new Actions(Actions.RIGHT));
        map.put(new Actions(Actions.SHRINK_RIGHT));
        map.put(new Actions(Actions.UP));
        map.put(new Actions(Actions.SHRINK_UP));
        map.put(new Actions(Actions.DOWN));
        map.put(new Actions(Actions.SHRINK_DOWN));
        map.put(new Actions(Actions.ESCAPE));
        map.put(new Actions(Actions.MINIMIZE));
        map.put(new Actions(Actions.MAXIMIZE));
        map.put(new Actions(Actions.NEXT_FRAME));
        map.put(new Actions(Actions.PREVIOUS_FRAME));
        map.put(new Actions(Actions.NAVIGATE_NEXT));
        map.put(new Actions(Actions.NAVIGATE_PREVIOUS));
}

 public  void paint(Graphics g,
    JComponent c) 
{

}

 protected  void registerKeyboardActions() 
{

}

 protected  void uninstallDefaults() 
{

}

 protected  void uninstallDesktopManager() 
{
        if(desktop.getDesktopManager() instanceof UIResource) {
            desktop.setDesktopManager(null);
        }
        desktopManager = null;
}

 protected  void uninstallKeyboardActions() 
{
      unregisterKeyboardActions();
      SwingUtilities.replaceUIInputMap(desktop, JComponent.
                                     WHEN_IN_FOCUSED_WINDOW, null);
      SwingUtilities.replaceUIInputMap(desktop, JComponent.
                                     WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null);
      SwingUtilities.replaceUIActionMap(desktop, null);
}

 protected  void uninstallListeners() 
{
        desktop.removePropertyChangeListener(pcl);
        pcl = null;
}

Uninstalls the PropertyChangeListener returned from createPropertyChangeListener from the JDesktopPane.

 public  void uninstallUI(JComponent c) 
{
        uninstallKeyboardActions();
        uninstallListeners();
        uninstallDesktopManager();
        uninstallDefaults();
        desktop = null;
        handler = null;
}

 protected  void unregisterKeyboardActions() 
{

}