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	/*
	* Copyright (c) 1997, 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.basic;

	import java.awt.Dimension;
	import java.awt.Graphics;
	import java.awt.Color;

	import javax.swing.*;
	import javax.swing.plaf.UIResource;

	/**
	* JButton object that draws a scaled Arrow in one of the cardinal directions.
	* <p>
	* <strong>Warning:</strong>
	* Serialized objects of this class will not be compatible with
	* future Swing releases. The current serialization support is
	* appropriate for short term storage or RMI between applications running
	* the same version of Swing. As of 1.4, support for long term storage
	* of all JavaBeans™
	* has been added to the <code>java.beans</code> package.
	* Please see {@link java.beans.XMLEncoder}.
	*
	* @author David Kloba
	*/
	public class BasicArrowButton extends JButton implements SwingConstants
	{
	/**
	* The direction of the arrow. One of
	* {@code SwingConstants.NORTH}, {@code SwingConstants.SOUTH},
	* {@code SwingConstants.EAST} or {@code SwingConstants.WEST}.
	*/
	protected int direction;

	private Color shadow;
	private Color darkShadow;
	private Color highlight;

	/**
	* Creates a {@code BasicArrowButton} whose arrow
	* is drawn in the specified direction and with the specified
	* colors.
	*
	* @param direction the direction of the arrow; one of
	* {@code SwingConstants.NORTH}, {@code SwingConstants.SOUTH},
	* {@code SwingConstants.EAST} or {@code SwingConstants.WEST}
	* @param background the background color of the button
	* @param shadow the color of the shadow
	* @param darkShadow the color of the dark shadow
	* @param highlight the color of the highlight
	* @since 1.4
	*/
	public BasicArrowButton(int direction, Color background, Color shadow,
	Color darkShadow, Color highlight) {
	super();
	setRequestFocusEnabled(false);
	setDirection(direction);
	setBackground(background);
	this.shadow = shadow;
	this.darkShadow = darkShadow;
	this.highlight = highlight;
	}

	/**
	* Creates a {@code BasicArrowButton} whose arrow
	* is drawn in the specified direction.
	*
	* @param direction the direction of the arrow; one of
	* {@code SwingConstants.NORTH}, {@code SwingConstants.SOUTH},
	* {@code SwingConstants.EAST} or {@code SwingConstants.WEST}
	*/
	public BasicArrowButton(int direction) {
	this(direction, UIManager.getColor("control"), UIManager.getColor("controlShadow"),
	UIManager.getColor("controlDkShadow"), UIManager.getColor("controlLtHighlight"));
	}

	/**
	* Returns the direction of the arrow.
	*/
	public int getDirection() {
	return direction;
	}

	/**
	* Sets the direction of the arrow.
	*
	* @param direction the direction of the arrow; one of
	* of {@code SwingConstants.NORTH},
	* {@code SwingConstants.SOUTH},
	* {@code SwingConstants.EAST} or {@code SwingConstants.WEST}
	*/
	public void setDirection(int direction) {
	this.direction = direction;
	}

	public void paint(Graphics g) {
	Color origColor;
	boolean isPressed, isEnabled;
	int w, h, size;

	w = getSize().width;
	h = getSize().height;
	origColor = g.getColor();
	isPressed = getModel().isPressed();
	isEnabled = isEnabled();

	g.setColor(getBackground());
	g.fillRect(1, 1, w-2, h-2);

	/// Draw the proper Border
	if (getBorder() != null && !(getBorder() instanceof UIResource)) {
	paintBorder(g);
	} else if (isPressed) {
	g.setColor(shadow);
	g.drawRect(0, 0, w-1, h-1);
	} else {
	// Using the background color set above
	g.drawLine(0, 0, 0, h-1);
	g.drawLine(1, 0, w-2, 0);

	g.setColor(highlight); // inner 3D border
	g.drawLine(1, 1, 1, h-3);
	g.drawLine(2, 1, w-3, 1);

	g.setColor(shadow); // inner 3D border
	g.drawLine(1, h-2, w-2, h-2);
	g.drawLine(w-2, 1, w-2, h-3);

	g.setColor(darkShadow); // black drop shadow __\|
	g.drawLine(0, h-1, w-1, h-1);
	g.drawLine(w-1, h-1, w-1, 0);
	}

	// If there's no room to draw arrow, bail
	if(h < 5 \|\| w < 5) {
	g.setColor(origColor);
	return;
	}

	if (isPressed) {
	g.translate(1, 1);
	}

	// Draw the arrow
	size = Math.min((h - 4) / 3, (w - 4) / 3);
	size = Math.max(size, 2);
	paintTriangle(g, (w - size) / 2, (h - size) / 2,
	size, direction, isEnabled);

	// Reset the Graphics back to it's original settings
	if (isPressed) {
	g.translate(-1, -1);
	}
	g.setColor(origColor);

	}

	/**
	* Returns the preferred size of the {@code BasicArrowButton}.
	*
	* @return the preferred size
	*/
	public Dimension getPreferredSize() {
	return new Dimension(16, 16);
	}

	/**
	* Returns the minimum size of the {@code BasicArrowButton}.
	*
	* @return the minimum size
	*/
	public Dimension getMinimumSize() {
	return new Dimension(5, 5);
	}

	/**
	* Returns the maximum size of the {@code BasicArrowButton}.
	*
	* @return the maximum size
	*/
	public Dimension getMaximumSize() {
	return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
	}

	/**
	* Returns whether the arrow button should get the focus.
	* {@code BasicArrowButton}s are used as a child component of
	* composite components such as {@code JScrollBar} and
	* {@code JComboBox}. Since the composite component typically gets the
	* focus, this method is overriden to return {@code false}.
	*
	* @return {@code false}
	*/
	public boolean isFocusTraversable() {
	return false;
	}

	/**
	* Paints a triangle.
	*
	* @param g the {@code Graphics} to draw to
	* @param x the x coordinate
	* @param y the y coordinate
	* @param size the size of the triangle to draw
	* @param direction the direction in which to draw the arrow;
	* one of {@code SwingConstants.NORTH},
	* {@code SwingConstants.SOUTH}, {@code SwingConstants.EAST} or
	* {@code SwingConstants.WEST}
	* @param isEnabled whether or not the arrow is drawn enabled
	*/
	public void paintTriangle(Graphics g, int x, int y, int size,
	int direction, boolean isEnabled) {
	Color oldColor = g.getColor();
	int mid, i, j;

	j = 0;
	size = Math.max(size, 2);
	mid = (size / 2) - 1;

	g.translate(x, y);
	if(isEnabled)
	g.setColor(darkShadow);
	else
	g.setColor(shadow);

	switch(direction) {
	case NORTH:
	for(i = 0; i < size; i++) {
	g.drawLine(mid-i, i, mid+i, i);
	}
	if(!isEnabled) {
	g.setColor(highlight);
	g.drawLine(mid-i+2, i, mid+i, i);
	}
	break;
	case SOUTH:
	if(!isEnabled) {
	g.translate(1, 1);
	g.setColor(highlight);
	for(i = size-1; i >= 0; i--) {
	g.drawLine(mid-i, j, mid+i, j);
	j++;
	}
	g.translate(-1, -1);
	g.setColor(shadow);
	}

	j = 0;
	for(i = size-1; i >= 0; i--) {
	g.drawLine(mid-i, j, mid+i, j);
	j++;
	}
	break;
	case WEST:
	for(i = 0; i < size; i++) {
	g.drawLine(i, mid-i, i, mid+i);
	}
	if(!isEnabled) {
	g.setColor(highlight);
	g.drawLine(i, mid-i+2, i, mid+i);
	}
	break;
	case EAST:
	if(!isEnabled) {
	g.translate(1, 1);
	g.setColor(highlight);
	for(i = size-1; i >= 0; i--) {
	g.drawLine(j, mid-i, j, mid+i);
	j++;
	}
	g.translate(-1, -1);
	g.setColor(shadow);
	}

	j = 0;
	for(i = size-1; i >= 0; i--) {
	g.drawLine(j, mid-i, j, mid+i);
	j++;
	}
	break;
	}
	g.translate(-x, -y);
	g.setColor(oldColor);
	}

	}

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