/* * Copyright (c) 1997, 2007, 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.border; import java.awt.Graphics;import java.awt.Insets;import java.awt.Rectangle;import java.awt.Component;import java.io.Serializable;import java.beans.ConstructorProperties; /** * A class which provides an empty, transparent border which * takes up space but does no drawing. * <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<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author David Kloba */public class EmptyBorder extends AbstractBorder implements Serializable{    protected int left, right, top, bottom;     /**     * Creates an empty border with the specified insets.     * @param top the top inset of the border     * @param left the left inset of the border     * @param bottom the bottom inset of the border     * @param right the right inset of the border     */    public EmptyBorder(int top, int left, int bottom, int right)   {        this.top = top;        this.right = right;        this.bottom = bottom;        this.left = left;    }     /**     * Creates an empty border with the specified insets.     * @param borderInsets the insets of the border     */    @ConstructorProperties({"borderInsets"})    public EmptyBorder(Insets borderInsets)   {        this.top = borderInsets.top;        this.right = borderInsets.right;        this.bottom = borderInsets.bottom;        this.left = borderInsets.left;    }     /**     * Does no drawing by default.     */    public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {    }     /**     * Reinitialize the insets parameter with this Border's current Insets.     * @param c the component for which this border insets value applies     * @param insets the object to be reinitialized     */    public Insets getBorderInsets(Component c, Insets insets) {        insets.left = left;        insets.top = top;        insets.right = right;        insets.bottom = bottom;        return insets;    }     /**     * Returns the insets of the border.     * @since 1.3     */    public Insets getBorderInsets() {        return new Insets(top, left, bottom, right);    }     /**     * Returns whether or not the border is opaque.     * Returns false by default.     */    public boolean isBorderOpaque() { return false; } }