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package javax.swing.plaf.synth;

import java.awt.*;
import java.beans.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import sun.swing.DefaultLookup;


Provides the Synth L&F UI delegate for JOptionPane. 
Author:James Gosling, Scott Violet, Amy Fowler
Since:1.7
/**
 * Provides the Synth L&F UI delegate for
 * {@link javax.swing.JOptionPane}.
 *
 * @author James Gosling
 * @author Scott Violet
 * @author Amy Fowler
 * @since 1.7
 */
public class SynthOptionPaneUI extends BasicOptionPaneUI implements
                                PropertyChangeListener, SynthUI {
    private SynthStyle style;

    
Creates a new UI object for the given component.

Params:
  • x – component to create UI object for
Returns:the UI object
/**
     * Creates a new UI object for the given component.
     *
     * @param x component to create UI object for
     * @return the UI object
     */
    public static ComponentUI createUI(JComponent x) {
        return new SynthOptionPaneUI();
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected void installDefaults() {
        updateStyle(optionPane);
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected void installListeners() {
        super.installListeners();
        optionPane.addPropertyChangeListener(this);
    }

    private void updateStyle(JComponent c) {
        SynthContext context = getContext(c, ENABLED);
        SynthStyle oldStyle = style;

        style = SynthLookAndFeel.updateStyle(context, this);
        if (style != oldStyle) {
            minimumSize = (Dimension)style.get(context,
                                               "OptionPane.minimumSize");
            if (minimumSize == null) {
                minimumSize = new Dimension(262, 90);
            }
            if (oldStyle != null) {
                uninstallKeyboardActions();
                installKeyboardActions();
            }
        }
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected void uninstallDefaults() {
        SynthContext context = getContext(optionPane, ENABLED);

        style.uninstallDefaults(context);
        style = null;
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected void uninstallListeners() {
        super.uninstallListeners();
        optionPane.removePropertyChangeListener(this);
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected void installComponents() {
        optionPane.add(createMessageArea());

        Container separator = createSeparator();
        if (separator != null) {
            optionPane.add(separator);
            SynthContext context = getContext(optionPane, ENABLED);
            optionPane.add(Box.createVerticalStrut(context.getStyle().
                       getInt(context, "OptionPane.separatorPadding", 6)));
        }
        optionPane.add(createButtonArea());
        optionPane.applyComponentOrientation(optionPane.getComponentOrientation());
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    public SynthContext getContext(JComponent c) {
        return getContext(c, getComponentState(c));
    }

    private SynthContext getContext(JComponent c, int state) {
        return SynthContext.getContext(c, style, state);
    }

    private int getComponentState(JComponent c) {
        return SynthLookAndFeel.getComponentState(c);
    }

    
Notifies this UI delegate to repaint the specified component. This method paints the component background, then calls the paint(SynthContext, Graphics) method. 
In general, this method does not need to be overridden by subclasses. All Look and Feel rendering code should reside in the paint method. 
Params:
  • g – the Graphics object used for painting
  • c – the component being painted
See Also:
/**
     * Notifies this UI delegate to repaint the specified component.
     * This method paints the component background, then calls
     * the {@link #paint(SynthContext,Graphics)} method.
     *
     * <p>In general, this method does not need to be overridden by subclasses.
     * All Look and Feel rendering code should reside in the {@code paint} method.
     *
     * @param g the {@code Graphics} object used for painting
     * @param c the component being painted
     * @see #paint(SynthContext,Graphics)
     */
    @Override
    public void update(Graphics g, JComponent c) {
        SynthContext context = getContext(c);

        SynthLookAndFeel.update(context, g);
        context.getPainter().paintOptionPaneBackground(context,
                          g, 0, 0, c.getWidth(), c.getHeight());
        paint(context, g);
    }

    
Paints the specified component according to the Look and Feel.

This method is not used by Synth Look and Feel. Painting is handled by the paint(SynthContext, Graphics) method. 
Params:
  • g – the Graphics object used for painting
  • c – the component being painted
See Also:
/**
     * Paints the specified component according to the Look and Feel.
     * <p>This method is not used by Synth Look and Feel.
     * Painting is handled by the {@link #paint(SynthContext,Graphics)} method.
     *
     * @param g the {@code Graphics} object used for painting
     * @param c the component being painted
     * @see #paint(SynthContext,Graphics)
     */
    @Override
    public void paint(Graphics g, JComponent c) {
        SynthContext context = getContext(c);

        paint(context, g);
    }

    
Paints the specified component. This implementation does nothing.

Params:
  • context – context for the component being painted
  • g – the Graphics object used for painting
See Also:
/**
     * Paints the specified component. This implementation does nothing.
     *
     * @param context context for the component being painted
     * @param g the {@code Graphics} object used for painting
     * @see #update(Graphics,JComponent)
     */
    protected void paint(SynthContext context, Graphics g) {
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    public void paintBorder(SynthContext context, Graphics g, int x,
                            int y, int w, int h) {
        context.getPainter().paintOptionPaneBorder(context, g, x, y, w, h);
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    public void propertyChange(PropertyChangeEvent e) {
        if (SynthLookAndFeel.shouldUpdateStyle(e)) {
            updateStyle((JOptionPane)e.getSource());
        }
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected boolean getSizeButtonsToSameWidth() {
        return DefaultLookup.getBoolean(optionPane, this,
                                        "OptionPane.sameSizeButtons", true);
    }

    
Called from installComponents to create a Container containing the body of the message. The icon is the created by calling BasicOptionPaneUI.addIcon. 
/**
     * Called from {@link #installComponents} to create a {@code Container}
     * containing the body of the message. The icon is the created by calling
     * {@link #addIcon}.
     */
    @Override
    protected Container createMessageArea() {
        JPanel top = new JPanel();
        top.setName("OptionPane.messageArea");
        top.setLayout(new BorderLayout());

        /* Fill the body. */
        Container          body = new JPanel(new GridBagLayout());
        Container          realBody = new JPanel(new BorderLayout());

        body.setName("OptionPane.body");
        realBody.setName("OptionPane.realBody");

        if (getIcon() != null) {
            JPanel sep = new JPanel();
            sep.setName("OptionPane.separator");
            sep.setPreferredSize(new Dimension(15, 1));
            realBody.add(sep, BorderLayout.BEFORE_LINE_BEGINS);
        }
        realBody.add(body, BorderLayout.CENTER);

        GridBagConstraints cons = new GridBagConstraints();
        cons.gridx = cons.gridy = 0;
        cons.gridwidth = GridBagConstraints.REMAINDER;
        cons.gridheight = 1;

        SynthContext context = getContext(optionPane, ENABLED);
        cons.anchor = context.getStyle().getInt(context,
                      "OptionPane.messageAnchor", GridBagConstraints.CENTER);

        cons.insets = new Insets(0,0,3,0);

        addMessageComponents(body, cons, getMessage(),
                          getMaxCharactersPerLineCount(), false);
        top.add(realBody, BorderLayout.CENTER);

        addIcon(top);
        return top;
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    protected Container createSeparator() {
        JSeparator separator = new JSeparator(SwingConstants.HORIZONTAL);

        separator.setName("OptionPane.separator");
        return separator;
    }
}