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/*
* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.swing.plaf.synth;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import java.awt.Graphics;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
/**
* Provides the Synth L&F UI delegate for
* {@link javax.swing.JPopupMenu}.
*
* @author Georges Saab
* @author David Karlton
* @author Arnaud Weber
* @since 1.7
*/
public class SynthPopupMenuUI extends BasicPopupMenuUI
implements PropertyChangeListener, SynthUI {
private SynthStyle style;
/**
* 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 SynthPopupMenuUI();
}
/**
* {@inheritDoc}
*/
@Override
public void installDefaults() {
if (popupMenu.getLayout() == null ||
popupMenu.getLayout() instanceof UIResource) {
popupMenu.setLayout(new SynthMenuLayout(popupMenu, BoxLayout.Y_AXIS));
}
updateStyle(popupMenu);
}
private void updateStyle(JComponent c) {
SynthContext context = getContext(c, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
}
/**
* {@inheritDoc}
*/
@Override
protected void installListeners() {
super.installListeners();
popupMenu.addPropertyChangeListener(this);
}
/**
* {@inheritDoc}
*/
@Override
protected void uninstallDefaults() {
SynthContext context = getContext(popupMenu, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
if (popupMenu.getLayout() instanceof UIResource) {
popupMenu.setLayout(null);
}
}
/**
* {@inheritDoc}
*/
@Override
protected void uninstallListeners() {
super.uninstallListeners();
popupMenu.removePropertyChangeListener(this);
}
/**
* {@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 {@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().paintPopupMenuBackground(context,
g, 0, 0, c.getWidth(), c.getHeight());
paint(context, g);
context.dispose();
}
/**
* 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. 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}
*/
@Override
public void paintBorder(SynthContext context, Graphics g, int x,
int y, int w, int h) {
context.getPainter().paintPopupMenuBorder(context, g, x, y, w, h);
}
/**
* {@inheritDoc}
*/
@Override
public void propertyChange(PropertyChangeEvent e) {
if (SynthLookAndFeel.shouldUpdateStyle(e)) {
updateStyle(popupMenu);
}
}
}
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