add(rightButton);            }        }        revalidate();    }    /**     * Creates and return an instance of JButton that can be used to     * collapse the left component in the split pane.     */    protected JButton createLeftOneTouchButton() {        JButton b = new JButton() {            public void setBorder(Border b) {            }            public void paint(Graphics g) {                if (splitPane != null) {                    int[]   xs = new int[3];                    int[]   ys = new int[3];                    int     blockSize;                    // Fill the background first ...                    g.setColor(this.getBackground());                    g.fillRect(0, 0, this.getWidth(),                               this.getHeight());                    // ... then draw the arrow.                    g.setColor(Color.black);                    if (orientation == JSplitPane.VERTICAL_SPLIT) {                        blockSize = Math.min(getHeight(), oneTouchSize);                        xs[0] = blockSize;                        xs[1] = 0;                        xs[2] = blockSize << 1;                        ys[0] = 0;                        ys[1] = ys[2] = blockSize;                        g.drawPolygon(xs, ys, 3); // Little trick to make the                                                  // arrows of equal size                    }                    else {                        blockSize = Math.min(getWidth(), oneTouchSize);                        xs[0] = xs[2] = blockSize;                        xs[1] = 0;                        ys[0] = 0;                        ys[1] = blockSize;                        ys[2] = blockSize << 1;                    }                    g.fillPolygon(xs, ys, 3);                }            }	    // Don't want the button to participate in focus traversable.	    public boolean isFocusTraversable() {		return false;	    }        };        b.setMinimumSize(new Dimension(oneTouchSize, oneTouchSize));	b.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));        b.setFocusPainted(false);        b.setBorderPainted(false);        b.setRequestFocusEnabled(false);        return b;    }    /**     * Creates and return an instance of JButton that can be used to     * collapse the right component in the split pane.     */    protected JButton createRightOneTouchButton() {        JButton b = new JButton() {            public void setBorder(Border border) {            }            public void paint(Graphics g) {                if (splitPane != null) {                    int[]          xs = new int[3];                    int[]          ys = new int[3];                    int            blockSize;                    // Fill the background first ...                    g.setColor(this.getBackground());                    g.fillRect(0, 0, this.getWidth(),                               this.getHeight());                    // ... then draw the arrow.                    if (orientation == JSplitPane.VERTICAL_SPLIT) {                        blockSize = Math.min(getHeight(), oneTouchSize);                        xs[0] = blockSize;                        xs[1] = blockSize << 1;                        xs[2] = 0;                        ys[0] = blockSize;                        ys[1] = ys[2] = 0;                    }                    else {                        blockSize = Math.min(getWidth(), oneTouchSize);                        xs[0] = xs[2] = 0;                        xs[1] = blockSize;                        ys[0] = 0;                        ys[1] = blockSize;                        ys[2] = blockSize << 1;                    }                    g.setColor(Color.black);                    g.fillPolygon(xs, ys, 3);                }            }	    // Don't want the button to participate in focus traversable.	    public boolean isFocusTraversable() {		return false;	    }        };        b.setMinimumSize(new Dimension(oneTouchSize, oneTouchSize));	b.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));        b.setFocusPainted(false);        b.setBorderPainted(false);        b.setRequestFocusEnabled(false);        return b;    }    /**     * Message to prepare for dragging. This messages the BasicSplitPaneUI     * with startDragging.     */    protected void prepareForDragging() {        splitPaneUI.startDragging();    }    /**     * Messages the BasicSplitPaneUI with dragDividerTo that this instance     * is contained in.     */    protected void dragDividerTo(int location) {        splitPaneUI.dragDividerTo(location);    }    /**     * Messages the BasicSplitPaneUI with finishDraggingTo that this instance     * is contained in.     */    protected void finishDraggingTo(int location) {        splitPaneUI.finishDraggingTo(location);    }    /**     * MouseHandler is responsible for converting mouse events     * (released, dragged...) into the appropriate DragController      * methods.     * <p>     */    protected class MouseHandler extends MouseAdapter            implements MouseMotionListener    {        /**         * Starts the dragging session by creating the appropriate instance         * of DragController.         */        public void mousePressed(MouseEvent e) {            if ((e.getSource() == BasicSplitPaneDivider.this ||		 e.getSource() == splitPane) &&		dragger == null &&splitPane.isEnabled()) {                Component            newHiddenDivider = splitPaneUI.                                     getNonContinuousLayoutDivider();                if (hiddenDivider != newHiddenDivider) {                    if (hiddenDivider != null) {                        hiddenDivider.removeMouseListener(this);                        hiddenDivider.removeMouseMotionListener(this);                    }                    hiddenDivider = newHiddenDivider;                    if (hiddenDivider != null) {                        hiddenDivider.addMouseMotionListener(this);                        hiddenDivider.addMouseListener(this);                    }                }                if (splitPane.getLeftComponent() != null &&                    splitPane.getRightComponent() != null) {                    if (orientation == JSplitPane.HORIZONTAL_SPLIT) {                        dragger = new DragController(e);                    }                    else {                        dragger = new VerticalDragController(e);                    }                    if (!dragger.isValid()) {                        dragger = null;                    }                    else {                        prepareForDragging();                        dragger.continueDrag(e);                    }                }                e.consume();            }        }        /**         * If dragger is not null it is messaged with completeDrag.         */        public void mouseReleased(MouseEvent e) {            if (dragger != null) {                if (e.getSource() == splitPane) {                    dragger.completeDrag(e.getX(), e.getY());                }		else if (e.getSource() == BasicSplitPaneDivider.this) {                    Point   ourLoc = getLocation();		    dragger.completeDrag(e.getX() + ourLoc.x,					 e.getY() + ourLoc.y);		}                else if (e.getSource() == hiddenDivider) {                    Point   hDividerLoc = hiddenDivider.getLocation();                    int     ourX = e.getX() + hDividerLoc.x;                    int     ourY = e.getY() + hDividerLoc.y;                                        dragger.completeDrag(ourX, ourY);                }                dragger = null;                e.consume();            }        }        //        // MouseMotionListener        //        /**         * If dragger is not null it is messaged with continueDrag.         */        public void mouseDragged(MouseEvent e) {            if (dragger != null) {                if (e.getSource() == splitPane) {                    dragger.continueDrag(e.getX(), e.getY());                }		else if (e.getSource() == BasicSplitPaneDivider.this) {                    Point   ourLoc = getLocation();                                        dragger.continueDrag(e.getX() + ourLoc.x,					 e.getY() + ourLoc.y);		}                else if (e.getSource() == hiddenDivider) {                    Point   hDividerLoc = hiddenDivider.getLocation();                    int     ourX = e.getX() + hDividerLoc.x;                    int     ourY = e.getY() + hDividerLoc.y;                                        dragger.continueDrag(ourX, ourY);                }                e.consume();            }        }        /**         *  Resets the cursor based on the orientation.         */        public void mouseMoved(MouseEvent e) {        }        /**         * Invoked when the mouse enters a component.         *         * @param e MouseEvent describing the details of the enter event.         * @since 1.5         */        public void mouseEntered(MouseEvent e) {            if (e.getSource() == BasicSplitPaneDivider.this) {                setMouseOver(true);            }        }        /**         * Invoked when the mouse exits a component.         *         * @param e MouseEvent describing the details of the exit event.         * @since 1.5         */        public void mouseExited(MouseEvent e) {            if (e.getSource() == BasicSplitPaneDivider.this) {                setMouseOver(false);            }        }    }    /**     * Handles the events during a dragging session for a     * HORIZONTAL_SPLIT oriented split pane. This continually     * messages <code>dragDividerTo</code> and then when done messages     * <code>finishDraggingTo</code>. When an instance is created it should be     * messaged with <code>isValid</code> to insure that dragging can happen     * (dragging won't be allowed if the two views can not be resized).     * <p>     * <strong>Warning:</strong>     * Serialized objects of this class will not be compatible with     * future Swing releases. The current serialization support is     * appropriate for short term storage or RMI between applications running     * the same version of Swing.  As of 1.4, support for long term storage     * of all JavaBeans<sup><font size="-2">TM</font></sup>     * has been added to the <code>java.beans</code> package.     * Please see {@link java.beans.XMLEncoder}.     */    protected class DragController    {        /**         * Initial location of the divider.         */        int initialX;        /**         * Maximum and minimum positions to drag to.         */        int maxX, minX;        /**         * Initial location the mouse down happened at.         */        int offset;        protected DragController(MouseEvent e) {            JSplitPane  splitPane = splitPaneUI.getSplitPane();            Component   leftC = splitPane.getLeftComponent();	    Component   rightC = splitPane.getRightComponent();            initialX = getLocation().x;	    if (e.getSource() == BasicSplitPaneDivider.this) {		offset = e.getX();	    }	    else { // splitPane		offset = e.getX() - initialX;	    }	    if (leftC == null || rightC == null || offset < -1 ||		offset >= getSize().width) {		// Don't allow dragging.		maxX = -1;	    }	    else {		Insets      insets = splitPane.getInsets();                if (leftC.isVisible()) {                    minX = leftC.getMinimumSize().width;		    if (insets != null) {			minX += insets.left;		    }                }                else {                    minX = 0;                }                if (rightC.isVisible()) {		    int right = (insets != null) ? insets.right : 0;                    maxX = Math.max(0, splitPane.getSize().width -                                    (getSize().width + right) -                                    rightC.getMinimumSize().width);                }                else {		    int right = (insets != null) ? insets.right : 0;                    maxX = Math.max(0, splitPane.getSize().width -