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	/*
	* Copyright (c) 1997, 2003, 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.java2d.pipe;

	import java.awt.Color;
	import java.awt.Image;
	import java.awt.Shape;
	import java.awt.geom.AffineTransform;
	import java.awt.image.BufferedImage;
	import java.awt.image.BufferedImageOp;
	import java.awt.image.ImageObserver;
	import sun.java2d.SunGraphics2D;
	import java.awt.font.GlyphVector;

	/**
	* This class is used to force a revalidation of the pipelines of
	* the indicated SunGraphics2D object before a draw command.
	* After calling SunGraphics2D.validatePipe() to force the pipeline
	* to be revalidated, this object redispatches the draw command to
	* the new valid pipe object.
	*/
	public class ValidatePipe
	implements PixelDrawPipe, PixelFillPipe, ShapeDrawPipe, TextPipe,
	DrawImagePipe
	{
	/*
	* Different subclasses may override this to do various
	* other forms of validation and return a return code
	* indicating whether or not the validation was successful.
	*/
	public boolean validate(SunGraphics2D sg) {
	sg.validatePipe();
	return true;
	}

	public void drawLine(SunGraphics2D sg,
	int x1, int y1, int x2, int y2) {
	if (validate(sg)) {
	sg.drawpipe.drawLine(sg, x1, y1, x2, y2);
	}
	}

	public void drawRect(SunGraphics2D sg,
	int x, int y, int width, int height) {
	if (validate(sg)) {
	sg.drawpipe.drawRect(sg, x, y, width, height);
	}
	}

	public void fillRect(SunGraphics2D sg,
	int x, int y, int width, int height) {
	if (validate(sg)) {
	sg.fillpipe.fillRect(sg, x, y, width, height);
	}
	}

	public void drawRoundRect(SunGraphics2D sg,
	int x, int y, int width, int height,
	int arcWidth, int arcHeight) {
	if (validate(sg)) {
	sg.drawpipe.drawRoundRect(sg, x, y, width, height,
	arcWidth, arcHeight);
	}
	}

	public void fillRoundRect(SunGraphics2D sg,
	int x, int y, int width, int height,
	int arcWidth, int arcHeight) {
	if (validate(sg)) {
	sg.fillpipe.fillRoundRect(sg, x, y, width, height,
	arcWidth, arcHeight);
	}
	}

	public void drawOval(SunGraphics2D sg,
	int x, int y, int width, int height) {
	if (validate(sg)) {
	sg.drawpipe.drawOval(sg, x, y, width, height);
	}
	}

	public void fillOval(SunGraphics2D sg,
	int x, int y, int width, int height) {
	if (validate(sg)) {
	sg.fillpipe.fillOval(sg, x, y, width, height);
	}
	}

	public void drawArc(SunGraphics2D sg,
	int x, int y, int width, int height,
	int startAngle, int arcAngle) {
	if (validate(sg)) {
	sg.drawpipe.drawArc(sg, x, y, width, height, startAngle, arcAngle);
	}
	}

	public void fillArc(SunGraphics2D sg,
	int x, int y, int width, int height,
	int startAngle, int arcAngle) {
	if (validate(sg)) {
	sg.fillpipe.fillArc(sg, x, y, width, height, startAngle, arcAngle);
	}
	}

	public void drawPolyline(SunGraphics2D sg,
	int xPoints[], int yPoints[],
	int nPoints) {
	if (validate(sg)) {
	sg.drawpipe.drawPolyline(sg, xPoints, yPoints, nPoints);
	}
	}

	public void drawPolygon(SunGraphics2D sg,
	int xPoints[], int yPoints[],
	int nPoints) {
	if (validate(sg)) {
	sg.drawpipe.drawPolygon(sg, xPoints, yPoints, nPoints);
	}
	}

	public void fillPolygon(SunGraphics2D sg,
	int xPoints[], int yPoints[],
	int nPoints) {
	if (validate(sg)) {
	sg.fillpipe.fillPolygon(sg, xPoints, yPoints, nPoints);
	}
	}

	public void draw(SunGraphics2D sg, Shape s) {
	if (validate(sg)) {
	sg.shapepipe.draw(sg, s);
	}
	}

	public void fill(SunGraphics2D sg, Shape s) {
	if (validate(sg)) {
	sg.shapepipe.fill(sg, s);
	}
	}
	public void drawString(SunGraphics2D sg, String s, double x, double y) {
	if (validate(sg)) {
	sg.textpipe.drawString(sg, s, x, y);
	}
	}
	public void drawGlyphVector(SunGraphics2D sg, GlyphVector g,
	float x, float y) {
	if (validate(sg)) {
	sg.textpipe.drawGlyphVector(sg, g, x, y);
	}
	}
	public void drawChars(SunGraphics2D sg,
	char data[], int offset, int length,
	int x, int y) {
	if (validate(sg)) {
	sg.textpipe.drawChars(sg, data, offset, length, x, y);
	}
	}
	public boolean copyImage(SunGraphics2D sg, Image img,
	int x, int y,
	Color bgColor,
	ImageObserver observer) {
	if (validate(sg)) {
	return sg.imagepipe.copyImage(sg, img, x, y, bgColor, observer);
	} else {
	return false;
	}
	}
	public boolean copyImage(SunGraphics2D sg, Image img,
	int dx, int dy, int sx, int sy, int w, int h,
	Color bgColor,
	ImageObserver observer) {
	if (validate(sg)) {
	return sg.imagepipe.copyImage(sg, img, dx, dy, sx, sy, w, h,
	bgColor, observer);
	} else {
	return false;
	}
	}
	public boolean scaleImage(SunGraphics2D sg, Image img, int x, int y,
	int w, int h,
	Color bgColor,
	ImageObserver observer) {
	if (validate(sg)) {
	return sg.imagepipe.scaleImage(sg, img, x, y, w, h, bgColor,
	observer);
	} else {
	return false;
	}
	}
	public boolean scaleImage(SunGraphics2D sg, Image img,
	int dx1, int dy1, int dx2, int dy2,
	int sx1, int sy1, int sx2, int sy2,
	Color bgColor,
	ImageObserver observer) {
	if (validate(sg)) {
	return sg.imagepipe.scaleImage(sg, img, dx1, dy1, dx2, dy2,
	sx1, sy1, sx2, sy2, bgColor,
	observer);
	} else {
	return false;
	}
	}
	public boolean transformImage(SunGraphics2D sg, Image img,
	AffineTransform atfm,
	ImageObserver observer) {
	if (validate(sg)) {
	return sg.imagepipe.transformImage(sg, img, atfm, observer);
	} else {
	return false;
	}
	}
	public void transformImage(SunGraphics2D sg, BufferedImage img,
	BufferedImageOp op, int x, int y) {
	if (validate(sg)) {
	sg.imagepipe.transformImage(sg, img, op, x, y);
	}
	}
	}

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