/*
* 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
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*/
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; }
}