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package javax.swing.plaf.synth;

import java.beans.*;
import javax.swing.*;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.SeparatorUI;
import javax.swing.plaf.UIResource;
import javax.swing.plaf.DimensionUIResource;

Provides the Synth L&F UI delegate for JSeparator. 
Author:
Shannon Hickey, Joshua Outwater
Since:
1.7/**
 * Provides the Synth L&F UI delegate for
 * {@link javax.swing.JSeparator}.
 *
 * @author Shannon Hickey
 * @author Joshua Outwater
 * @since 1.7
 */
public class SynthSeparatorUI extends SeparatorUI
                              implements PropertyChangeListener, SynthUI {
    private SynthStyle style;

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

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public void installUI(JComponent c) {
        installDefaults((JSeparator)c);
        installListeners((JSeparator)c);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public void uninstallUI(JComponent c) {
        uninstallListeners((JSeparator)c);
        uninstallDefaults((JSeparator)c);
    }

    
Installs default setting. This method is called when a LookAndFeel is installed. /**
     * Installs default setting. This method is called when a
     * {@code LookAndFeel} is installed.
     */
    public void installDefaults(JSeparator c) {
        updateStyle(c);
    }

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

        style = SynthLookAndFeel.updateStyle(context, this);

        if (style != oldStyle) {
            if (sep instanceof JToolBar.Separator) {
                Dimension size = ((JToolBar.Separator)sep).getSeparatorSize();
                if (size == null || size instanceof UIResource) {
                    size = (DimensionUIResource)style.get(
                                      context, "ToolBar.separatorSize");
                    if (size == null) {
                        size = new DimensionUIResource(10, 10);
                    }
                    ((JToolBar.Separator)sep).setSeparatorSize(size);
                }
            }
        }

        context.dispose();
    }

    
Uninstalls default setting. This method is called when a LookAndFeel is uninstalled. /**
     * Uninstalls default setting. This method is called when a
     * {@code LookAndFeel} is uninstalled.
     */
    public void uninstallDefaults(JSeparator c) {
        SynthContext context = getContext(c, ENABLED);

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

    
Installs listeners. This method is called when a LookAndFeel is installed. /**
     * Installs listeners. This method is called when a
     * {@code LookAndFeel} is installed.
     */
    public void installListeners(JSeparator c) {
        c.addPropertyChangeListener(this);
    }

    
Uninstalls listeners. This method is called when a LookAndFeel is uninstalled. /**
     * Uninstalls listeners. This method is called when a
     * {@code LookAndFeel} is uninstalled.
     */
    public void uninstallListeners(JSeparator c) {
        c.removePropertyChangeListener(this);
    }

    
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:
paint(SynthContext, Graphics)/**
     * 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);

        JSeparator separator = (JSeparator)context.getComponent();
        SynthLookAndFeel.update(context, g);
        context.getPainter().paintSeparatorBackground(context,
                          g, 0, 0, c.getWidth(), c.getHeight(),
                          separator.getOrientation());
        paint(context, g);
        context.dispose();
    }

    
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:
paint(SynthContext, Graphics)/**
     * 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);
        context.dispose();
    }

    
Paints the specified component.
Params:
context – context for the component being painted
g – the Graphics object used for painting
See Also:
update(Graphics, JComponent)/**
     * Paints the specified component.
     *
     * @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) {
        JSeparator separator = (JSeparator)context.getComponent();
        context.getPainter().paintSeparatorForeground(context, g, 0, 0,
                             separator.getWidth(), separator.getHeight(),
                             separator.getOrientation());
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public void paintBorder(SynthContext context, Graphics g, int x,
                            int y, int w, int h) {
        JSeparator separator = (JSeparator)context.getComponent();
        context.getPainter().paintSeparatorBorder(context, g, x, y, w, h,
                                                  separator.getOrientation());
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public Dimension getPreferredSize(JComponent c) {
        SynthContext context = getContext(c);

        int thickness = style.getInt(context, "Separator.thickness", 2);
        Insets insets = c.getInsets();
        Dimension size;

        if (((JSeparator)c).getOrientation() == JSeparator.VERTICAL) {
            size = new Dimension(insets.left + insets.right + thickness,
                                 insets.top + insets.bottom);
        } else {
            size = new Dimension(insets.left + insets.right,
                                 insets.top + insets.bottom + thickness);
        }
        context.dispose();
        return size;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public Dimension getMinimumSize(JComponent c) {
        return getPreferredSize(c);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    @Override
    public Dimension getMaximumSize(JComponent c) {
        return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE);
    }

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

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

    public void propertyChange(PropertyChangeEvent evt) {
        if (SynthLookAndFeel.shouldUpdateStyle(evt)) {
            updateStyle((JSeparator)evt.getSource());
        }
    }
}