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

 public int getBaseline(JComponent c,
    int width,
    int height) 
{
        if (c == null) {
            throw new NullPointerException("Component must be non-null");
        }
        if (width <  0 || height <  0) {
            throw new IllegalArgumentException(
                    "Width and height must be  >= 0");
        }
        AbstractButton b = (AbstractButton)c;
        String text = b.getText();
        if (text == null || "".equals(text)) {
            return -1;
        }
        Insets i = b.getInsets();
        Rectangle viewRect = new Rectangle();
        Rectangle textRect = new Rectangle();
        Rectangle iconRect = new Rectangle();
        viewRect.x = i.left;
        viewRect.y = i.top;
        viewRect.width = width - (i.right + viewRect.x);
        viewRect.height = height - (i.bottom + viewRect.y);
        // layout the text and icon
        SynthContext context = getContext(b);
        FontMetrics fm = context.getComponent().getFontMetrics(
            context.getStyle().getFont(context));
        context.getStyle().getGraphicsUtils(context).layoutText(
            context, fm, b.getText(), b.getIcon(),
            b.getHorizontalAlignment(), b.getVerticalAlignment(),
            b.getHorizontalTextPosition(), b.getVerticalTextPosition(),
            viewRect, iconRect, textRect, b.getIconTextGap());
        View view = (View)b.getClientProperty(BasicHTML.propertyKey);
        int baseline;
        if (view != null) {
            baseline = BasicHTML.getHTMLBaseline(view, textRect.width,
                                                 textRect.height);
            if (baseline  >= 0) {
                baseline += textRect.y;
            }
        }
        else {
            baseline = textRect.y + fm.getAscent();
        }
        context.dispose();
        return baseline;
}

 public SynthContext getContext(JComponent c) 
{
        return getContext(c, getComponentState(c));
}

 SynthContext getContext(JComponent c,
    int state) 
{
        Region region = getRegion(c);
        return SynthContext.getContext(SynthContext.class, c, region,
                                       style, state);
}

 protected Icon getDefaultIcon(AbstractButton b) 
{
        SynthContext context = getContext(b);
        Icon icon = context.getStyle().getIcon(context, getPropertyPrefix() + "icon");
        context.dispose();
        return icon;
}

Returns the default icon. This should NOT callback to the JComponent.

 protected Icon getIcon(AbstractButton b) 
{
        Icon icon = b.getIcon();
        ButtonModel model = b.getModel();
        if (!model.isEnabled()) {
            icon = getSynthDisabledIcon(b, icon);
        } else if (model.isPressed() && model.isArmed()) {
            icon = getPressedIcon(b, getSelectedIcon(b, icon));
        } else if (b.isRolloverEnabled() && model.isRollover()) {
            icon = getRolloverIcon(b, getSelectedIcon(b, icon));
        } else if (model.isSelected()) {
            icon = getSelectedIcon(b, icon);
        } else {
            icon = getEnabledIcon(b, icon);
        }
        if(icon == null) {
            return getDefaultIcon(b);
        }
        return icon;
}

Returns the Icon to use in painting the button.

 public Dimension getMaximumSize(JComponent c) 
{
        if (c.getComponentCount()  > 0 && c.getLayout() != null) {
            return null;
        }
        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getMaximumSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());
        ss.dispose();
        return size;
}

 public Dimension getMinimumSize(JComponent c) 
{
        if (c.getComponentCount()  > 0 && c.getLayout() != null) {
            return null;
        }
        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getMinimumSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());
        ss.dispose();
        return size;
}

 public Dimension getPreferredSize(JComponent c) 
{
        if (c.getComponentCount()  > 0 && c.getLayout() != null) {
            return null;
        }
        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getPreferredSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());
        ss.dispose();
        return size;
}

 protected Icon getSizingIcon(AbstractButton b) 
{
        // NOTE: this is slightly different than BasicButtonUI, where it
        // would just use getIcon, but this should be ok.
        Icon icon = (b.isEnabled()) ? b.getIcon() : b.getDisabledIcon();
        if (icon == null) {
            icon = getDefaultIcon(b);
        }
        return icon;
}

Returns the Icon used in calculating the pref/min/max size.

 protected int getTextShiftOffset(SynthContext state) 
{
        AbstractButton button = (AbstractButton)state.getComponent();
        ButtonModel model = button.getModel();
        if (model.isArmed() && model.isPressed() &&
                               button.getPressedIcon() == null) {
            return state.getStyle().getInt(state, getPropertyPrefix() +
                                           "textShiftOffset", 0);
        }
        return 0;
}

Returns the amount to shift the text/icon when painting.

 protected  void installDefaults(AbstractButton b) 
{
        updateStyle(b);
        LookAndFeel.installProperty(b, "rolloverEnabled", Boolean.TRUE);
}

 protected  void installListeners(AbstractButton b) 
{
        super.installListeners(b);
        b.addPropertyChangeListener(this);
}

 public  void paint(Graphics g,
    JComponent c) 
{
        SynthContext context = getContext(c);
        paint(context, g);
        context.dispose();
}

 protected  void paint(SynthContext context,
    Graphics g) 
{
        AbstractButton b = (AbstractButton)context.getComponent();
        g.setColor(context.getStyle().getColor(context,
                                               ColorType.TEXT_FOREGROUND));
        g.setFont(style.getFont(context));
        context.getStyle().getGraphicsUtils(context).paintText(
            context, g, b.getText(), getIcon(b),
            b.getHorizontalAlignment(), b.getVerticalAlignment(),
            b.getHorizontalTextPosition(), b.getVerticalTextPosition(),
            b.getIconTextGap(), b.getDisplayedMnemonicIndex(),
            getTextShiftOffset(context));
}

  void paintBackground(SynthContext context,
    Graphics g,
    JComponent c) 
{
        if (((AbstractButton) c).isContentAreaFilled()) {
            context.getPainter().paintButtonBackground(context, g, 0, 0,
                                                       c.getWidth(),
                                                       c.getHeight());
        }
}

 public  void paintBorder(SynthContext context,
    Graphics g,
    int x,
    int y,
    int w,
    int h) 
{
        context.getPainter().paintButtonBorder(context, g, x, y, w, h);
}

 public  void propertyChange(PropertyChangeEvent e) 
{
        if (SynthLookAndFeel.shouldUpdateStyle(e)) {
            updateStyle((AbstractButton)e.getSource());
        }
}

 protected  void uninstallDefaults(AbstractButton b) 
{
        SynthContext context = getContext(b, ENABLED);
        style.uninstallDefaults(context);
        context.dispose();
        style = null;
}

 protected  void uninstallListeners(AbstractButton b) 
{
        super.uninstallListeners(b);
        b.removePropertyChangeListener(this);
}

 public  void update(Graphics g,
    JComponent c) 
{
        SynthContext context = getContext(c);
        SynthLookAndFeel.update(context, g);
        paintBackground(context, g, c);
        paint(context, g);
        context.dispose();
}

  void updateStyle(AbstractButton b) 
{
        SynthContext context = getContext(b, SynthConstants.ENABLED);
        SynthStyle oldStyle = style;
        style = SynthLookAndFeel.updateStyle(context, this);
        if (style != oldStyle) {
            if (b.getMargin() == null ||
                                (b.getMargin() instanceof UIResource)) {
                Insets margin = (Insets)style.get(context,getPropertyPrefix() +
                                                  "margin");
                if (margin == null) {
                    // Some places assume margins are non-null.
                    margin = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
                }
                b.setMargin(margin);
            }
            Object value = style.get(context, getPropertyPrefix() + "iconTextGap");
            if (value != null) {
                        LookAndFeel.installProperty(b, "iconTextGap", value);
            }
            value = style.get(context, getPropertyPrefix() + "contentAreaFilled");
            LookAndFeel.installProperty(b, "contentAreaFilled",
                                        value != null? value : Boolean.TRUE);
            if (oldStyle != null) {
                uninstallKeyboardActions(b);
                installKeyboardActions(b);
            }
        }
        context.dispose();
}