/*
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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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™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @author David Kloba
*/
@
SuppressWarnings("serial")
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; }
}