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	/*
	* Copyright (c) 1999, 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 sun.awt;

	import java.awt.*;

	import sun.util.logging.PlatformLogger;

	public abstract class SunGraphicsCallback {
	public static final int HEAVYWEIGHTS = 0x1;
	public static final int LIGHTWEIGHTS = 0x2;
	public static final int TWO_PASSES = 0x4;

	private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.SunGraphicsCallback");

	public abstract void run(Component comp, Graphics cg);

	protected void constrainGraphics(Graphics g, Rectangle bounds) {
	if (g instanceof ConstrainableGraphics) {
	((ConstrainableGraphics)g).constrain(bounds.x, bounds.y, bounds.width, bounds.height);
	} else {
	g.translate(bounds.x, bounds.y);
	}
	g.clipRect(0, 0, bounds.width, bounds.height);
	}

	@SuppressWarnings("deprecation")
	public final void runOneComponent(Component comp, Rectangle bounds,
	Graphics g, Shape clip,
	int weightFlags) {
	if (comp == null \|\| comp.getPeer() == null \|\| !comp.isVisible()) {
	return;
	}
	boolean lightweight = comp.isLightweight();
	if ((lightweight && (weightFlags & LIGHTWEIGHTS) == 0) \|\|
	(!lightweight && (weightFlags & HEAVYWEIGHTS) == 0)) {
	return;
	}

	if (bounds == null) {
	bounds = comp.getBounds();
	}

	if (clip == null \|\| clip.intersects(bounds)) {
	Graphics cg = g.create();
	try {
	constrainGraphics(cg, bounds);
	cg.setFont(comp.getFont());
	cg.setColor(comp.getForeground());
	if (cg instanceof Graphics2D) {
	((Graphics2D)cg).setBackground(comp.getBackground());
	} else if (cg instanceof Graphics2Delegate) {
	((Graphics2Delegate)cg).setBackground(
	comp.getBackground());
	}
	run(comp, cg);
	} finally {
	cg.dispose();
	}
	}
	}

	public final void runComponents(Component[] comps, Graphics g,
	int weightFlags) {
	int ncomponents = comps.length;
	Shape clip = g.getClip();

	if (log.isLoggable(PlatformLogger.Level.FINER) && (clip != null)) {
	Rectangle newrect = clip.getBounds();
	log.finer("x = " + newrect.x + ", y = " + newrect.y +
	", width = " + newrect.width +
	", height = " + newrect.height);
	}

	// A seriously sad hack--
	// Lightweight components always paint behind peered components,
	// even if they are at the top of the Z order. We emulate this
	// behavior by making two printing passes: the first for lightweights;
	// the second for heavyweights.
	//
	// ToDo(dpm): Either build a list of heavyweights during the
	// lightweight pass, or redesign the components array to keep
	// lightweights and heavyweights separate.
	if ((weightFlags & TWO_PASSES) != 0) {
	for (int i = ncomponents - 1; i >= 0; i--) {
	runOneComponent(comps[i], null, g, clip, LIGHTWEIGHTS);
	}
	for (int i = ncomponents - 1; i >= 0; i--) {
	runOneComponent(comps[i], null, g, clip, HEAVYWEIGHTS);
	}
	} else {
	for (int i = ncomponents - 1; i >= 0; i--) {
	runOneComponent(comps[i], null, g, clip, weightFlags);
	}
	}
	}

	public static final class PaintHeavyweightComponentsCallback
	extends SunGraphicsCallback
	{
	private static PaintHeavyweightComponentsCallback instance =
	new PaintHeavyweightComponentsCallback();

	private PaintHeavyweightComponentsCallback() {}
	public void run(Component comp, Graphics cg) {
	if (!comp.isLightweight()) {
	comp.paintAll(cg);
	} else if (comp instanceof Container) {
	runComponents(((Container)comp).getComponents(), cg,
	LIGHTWEIGHTS \| HEAVYWEIGHTS);
	}
	}
	public static PaintHeavyweightComponentsCallback getInstance() {
	return instance;
	}
	}
	public static final class PrintHeavyweightComponentsCallback
	extends SunGraphicsCallback
	{
	private static PrintHeavyweightComponentsCallback instance =
	new PrintHeavyweightComponentsCallback();

	private PrintHeavyweightComponentsCallback() {}
	public void run(Component comp, Graphics cg) {
	if (!comp.isLightweight()) {
	comp.printAll(cg);
	} else if (comp instanceof Container) {
	runComponents(((Container)comp).getComponents(), cg,
	LIGHTWEIGHTS \| HEAVYWEIGHTS);
	}
	}
	public static PrintHeavyweightComponentsCallback getInstance() {
	return instance;
	}
	}
	}

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