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	/*
	* Copyright (c) 1997, 1999, 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 com.sun.java.swing.plaf.motif;

	import java.awt.*;
	import java.awt.event.*;
	import javax.swing.JSplitPane;
	import javax.swing.UIManager;
	import javax.swing.plaf.basic.BasicSplitPaneUI;
	import javax.swing.plaf.basic.BasicSplitPaneDivider;


	/**
	* Divider used for Motif split pane.
	* <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. A future release of Swing will provide support for
	* long term persistence.
	*
	* @author Jeff Dinkins
	*/
	public class MotifSplitPaneDivider extends BasicSplitPaneDivider
	{
	/**
	* Default cursor, supers is package private, so we have to have one
	* too.
	*/
	private static final Cursor defaultCursor =
	Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);


	public static final int minimumThumbSize = 6;
	public static final int defaultDividerSize = 18;

	protected static final int pad = 6;

	private int hThumbOffset = 30;
	private int vThumbOffset = 40;
	protected int hThumbWidth = 12;
	protected int hThumbHeight = 18;
	protected int vThumbWidth = 18;
	protected int vThumbHeight = 12;

	protected Color highlightColor;
	protected Color shadowColor;
	protected Color focusedColor;

	/**
	* Creates a new Motif SplitPaneDivider
	*/
	public MotifSplitPaneDivider(BasicSplitPaneUI ui) {
	super(ui);
	highlightColor = UIManager.getColor("SplitPane.highlight");
	shadowColor = UIManager.getColor("SplitPane.shadow");
	focusedColor = UIManager.getColor("SplitPane.activeThumb");
	setDividerSize(hThumbWidth + pad);
	}

	/**
	* overrides to hardcode the size of the divider
	* PENDING(jeff) - rewrite JSplitPane so that this ins't needed
	*/
	public void setDividerSize(int newSize) {
	Insets insets = getInsets();
	int borderSize = 0;
	if (getBasicSplitPaneUI().getOrientation() ==
	JSplitPane.HORIZONTAL_SPLIT) {
	if (insets != null) {
	borderSize = insets.left + insets.right;
	}
	}
	else if (insets != null) {
	borderSize = insets.top + insets.bottom;
	}
	if (newSize < pad + minimumThumbSize + borderSize) {
	setDividerSize(pad + minimumThumbSize + borderSize);
	} else {
	vThumbHeight = hThumbWidth = newSize - pad - borderSize;
	super.setDividerSize(newSize);
	}
	}

	/**
	* Paints the divider.
	*/
	// PENDING(jeff) - the thumb's location and size is currently hard coded.
	// It should be dynamic.
	public void paint(Graphics g) {
	Color bgColor = getBackground();
	Dimension size = getSize();

	// fill
	g.setColor(getBackground());
	g.fillRect(0, 0, size.width, size.height);

	if(getBasicSplitPaneUI().getOrientation() ==
	JSplitPane.HORIZONTAL_SPLIT) {
	int center = size.width/2;
	int x = center - hThumbWidth/2;
	int y = hThumbOffset;

	// split line
	g.setColor(shadowColor);
	g.drawLine(center-1, 0, center-1, size.height);

	g.setColor(highlightColor);
	g.drawLine(center, 0, center, size.height);

	// draw thumb
	g.setColor((splitPane.hasFocus()) ? focusedColor :
	getBackground());
	g.fillRect(x+1, y+1, hThumbWidth-2, hThumbHeight-1);

	g.setColor(highlightColor);
	g.drawLine(x, y, x+hThumbWidth-1, y); // top
	g.drawLine(x, y+1, x, y+hThumbHeight-1); // left

	g.setColor(shadowColor);
	g.drawLine(x+1, y+hThumbHeight-1,
	x+hThumbWidth-1, y+hThumbHeight-1); // bottom
	g.drawLine(x+hThumbWidth-1, y+1,
	x+hThumbWidth-1, y+hThumbHeight-2); // right

	} else {
	int center = size.height/2;
	int x = size.width - vThumbOffset;
	int y = size.height/2 - vThumbHeight/2;

	// split line
	g.setColor(shadowColor);
	g.drawLine(0, center-1, size.width, center-1);

	g.setColor(highlightColor);
	g.drawLine(0, center, size.width, center);

	// draw thumb
	g.setColor((splitPane.hasFocus()) ? focusedColor :
	getBackground());
	g.fillRect(x+1, y+1, vThumbWidth-1, vThumbHeight-1);

	g.setColor(highlightColor);
	g.drawLine(x, y, x+vThumbWidth, y); // top
	g.drawLine(x, y+1, x, y+vThumbHeight); // left

	g.setColor(shadowColor);
	g.drawLine(x+1, y+vThumbHeight,
	x+vThumbWidth, y+vThumbHeight); // bottom
	g.drawLine(x+vThumbWidth, y+1,
	x+vThumbWidth, y+vThumbHeight-1); // right
	}
	super.paint(g);

	}

	/**
	* The minimums size is the same as the preferredSize
	*/
	public Dimension getMinimumSize() {
	return getPreferredSize();
	}

	/**
	* Sets the SplitPaneUI that is using the receiver. This is completely
	* overriden from super to create a different MouseHandler.
	*/
	public void setBasicSplitPaneUI(BasicSplitPaneUI newUI) {
	if (splitPane != null) {
	splitPane.removePropertyChangeListener(this);
	if (mouseHandler != null) {
	splitPane.removeMouseListener(mouseHandler);
	splitPane.removeMouseMotionListener(mouseHandler);
	removeMouseListener(mouseHandler);
	removeMouseMotionListener(mouseHandler);
	mouseHandler = null;
	}
	}
	splitPaneUI = newUI;
	if (newUI != null) {
	splitPane = newUI.getSplitPane();
	if (splitPane != null) {
	if (mouseHandler == null) mouseHandler=new MotifMouseHandler();
	splitPane.addMouseListener(mouseHandler);
	splitPane.addMouseMotionListener(mouseHandler);
	addMouseListener(mouseHandler);
	addMouseMotionListener(mouseHandler);
	splitPane.addPropertyChangeListener(this);
	if (splitPane.isOneTouchExpandable()) {
	oneTouchExpandableChanged();
	}
	}
	}
	else {
	splitPane = null;
	}
	}

	/**
	* Returns true if the point at <code>x</code>, <code>y</code>
	* is inside the thumb.
	*/
	private boolean isInThumb(int x, int y) {
	Dimension size = getSize();
	int thumbX;
	int thumbY;
	int thumbWidth;
	int thumbHeight;

	if (getBasicSplitPaneUI().getOrientation() ==
	JSplitPane.HORIZONTAL_SPLIT) {
	int center = size.width/2;
	thumbX = center - hThumbWidth/2;
	thumbY = hThumbOffset;
	thumbWidth = hThumbWidth;
	thumbHeight = hThumbHeight;
	}
	else {
	int center = size.height/2;
	thumbX = size.width - vThumbOffset;
	thumbY = size.height/2 - vThumbHeight/2;
	thumbWidth = vThumbWidth;
	thumbHeight = vThumbHeight;
	}
	return (x >= thumbX && x < (thumbX + thumbWidth) &&
	y >= thumbY && y < (thumbY + thumbHeight));
	}

	//
	// Two methods are exposed so that MotifMouseHandler can see the
	// superclass protected ivars
	//

	private DragController getDragger() {
	return dragger;
	}

	private JSplitPane getSplitPane() {
	return splitPane;
	}


	/**
	* MouseHandler is subclassed to only pass off to super if the mouse
	* is in the thumb. Motif only allows dragging when the thumb is clicked
	* in.
	*/
	private class MotifMouseHandler extends MouseHandler {
	public void mousePressed(MouseEvent e) {
	// Constrain the mouse pressed to the thumb.
	if (e.getSource() == MotifSplitPaneDivider.this &&
	getDragger() == null && getSplitPane().isEnabled() &&
	isInThumb(e.getX(), e.getY())) {
	super.mousePressed(e);
	}
	}

	public void mouseMoved(MouseEvent e) {
	if (getDragger() != null) {
	return;
	}
	if (!isInThumb(e.getX(), e.getY())) {
	if (getCursor() != defaultCursor) {
	setCursor(defaultCursor);
	}
	return;
	}
	super.mouseMoved(e);
	}
	}
	}

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