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

	/**
	* Provides the Synth L&F UI delegate for
	* {@link javax.swing.JMenu}.
	*
	* @author Georges Saab
	* @author David Karlton
	* @author Arnaud Weber
	* @since 1.7
	*/
	public class SynthMenuUI extends BasicMenuUI
	implements PropertyChangeListener, SynthUI {
	private SynthStyle style;
	private SynthStyle accStyle;

	/**
	* 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 SynthMenuUI();
	}

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

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

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

	style = SynthLookAndFeel.updateStyle(context, this);
	if (oldStyle != style) {
	String prefix = getPropertyPrefix();
	defaultTextIconGap = style.getInt(
	context, prefix + ".textIconGap", 4);
	if (menuItem.getMargin() == null \|\|
	(menuItem.getMargin() instanceof UIResource)) {
	Insets insets = (Insets)style.get(context, prefix + ".margin");

	if (insets == null) {
	// Some places assume margins are non-null.
	insets = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
	}
	menuItem.setMargin(insets);
	}
	acceleratorDelimiter = style.getString(context, prefix +
	".acceleratorDelimiter", "+");

	if (MenuItemLayoutHelper.useCheckAndArrow(menuItem)) {
	checkIcon = style.getIcon(context, prefix + ".checkIcon");
	arrowIcon = style.getIcon(context, prefix + ".arrowIcon");
	} else {
	// Not needed in this case
	checkIcon = null;
	arrowIcon = null;
	}

	((JMenu)menuItem).setDelay(style.getInt(context, prefix +
	".delay", 200));
	if (oldStyle != null) {
	uninstallKeyboardActions();
	installKeyboardActions();
	}
	}
	context.dispose();

	SynthContext accContext = getContext(mi, Region.MENU_ITEM_ACCELERATOR,
	ENABLED);

	accStyle = SynthLookAndFeel.updateStyle(accContext, this);
	accContext.dispose();
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public void uninstallUI(JComponent c) {
	super.uninstallUI(c);
	// Remove values from the parent's Client Properties.
	JComponent p = MenuItemLayoutHelper.getMenuItemParent((JMenuItem) c);
	if (p != null) {
	p.putClientProperty(
	SynthMenuItemLayoutHelper.MAX_ACC_OR_ARROW_WIDTH, null);
	}
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	protected void uninstallDefaults() {
	SynthContext context = getContext(menuItem, ENABLED);
	style.uninstallDefaults(context);
	context.dispose();
	style = null;

	SynthContext accContext = getContext(menuItem,
	Region.MENU_ITEM_ACCELERATOR, ENABLED);
	accStyle.uninstallDefaults(accContext);
	accContext.dispose();
	accStyle = null;

	super.uninstallDefaults();
	}

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

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

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

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

	private SynthContext getContext(JComponent c, Region region, int state) {
	return SynthContext.getContext(c, region, accStyle, state);
	}

	private int getComponentState(JComponent c) {
	int state;

	if (!c.isEnabled()) {
	return DISABLED;
	}
	if (menuItem.isArmed()) {
	state = MOUSE_OVER;
	}
	else {
	state = SynthLookAndFeel.getComponentState(c);
	}
	if (menuItem.isSelected()) {
	state \|= SELECTED;
	}
	return state;
	}

	private int getComponentState(JComponent c, Region region) {
	return getComponentState(c);
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	protected Dimension getPreferredMenuItemSize(JComponent c,
	Icon checkIcon,
	Icon arrowIcon,
	int defaultTextIconGap) {
	SynthContext context = getContext(c);
	SynthContext accContext = getContext(c, Region.MENU_ITEM_ACCELERATOR);
	Dimension value = SynthGraphicsUtils.getPreferredMenuItemSize(
	context, accContext, c, checkIcon, arrowIcon,
	defaultTextIconGap, acceleratorDelimiter,
	MenuItemLayoutHelper.useCheckAndArrow(menuItem),
	getPropertyPrefix());
	context.dispose();
	accContext.dispose();
	return value;
	}

	/**
	* 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().paintMenuBackground(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) {
	SynthContext accContext = getContext(menuItem,
	Region.MENU_ITEM_ACCELERATOR);
	// Refetch the appropriate check indicator for the current state
	String prefix = getPropertyPrefix();
	Icon checkIcon = style.getIcon(context, prefix + ".checkIcon");
	Icon arrowIcon = style.getIcon(context, prefix + ".arrowIcon");
	SynthGraphicsUtils.paint(context, accContext, g, checkIcon, arrowIcon,
	acceleratorDelimiter, defaultTextIconGap, getPropertyPrefix());
	accContext.dispose();
	}

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

	/**
	* {@inheritDoc}
	*/
	@Override
	public void propertyChange(PropertyChangeEvent e) {
	if (SynthLookAndFeel.shouldUpdateStyle(e) \|\|
	(e.getPropertyName().equals("ancestor") && UIManager.getBoolean("Menu.useMenuBarForTopLevelMenus"))) {
	updateStyle((JMenu)e.getSource());
	}
	}
	}

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