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package sun.swing;

import java.awt.Color;
import javax.swing.plaf.ColorUIResource;

A subclass of ColorUIResource that wraps an alternate color for use during printing. Useful to replace color values that may look poor in printed output.
Author:Shannon Hickey
/** * A subclass of ColorUIResource that wraps an alternate color * for use during printing. Useful to replace color values that * may look poor in printed output. * * @author Shannon Hickey * */
public class PrintColorUIResource extends ColorUIResource {
The color to use during printing
/** The color to use during printing */
private Color printColor;
Construct an instance for the given RGB value and alternate color to use during printing.
Params:
  • rgb – the color rgb value
  • printColor – the alternate color for printing
/** * Construct an instance for the given RGB value and * alternate color to use during printing. * * @param rgb the color rgb value * @param printColor the alternate color for printing */
public PrintColorUIResource(int rgb, Color printColor) { super(rgb); this.printColor = printColor; }
Return the color to use during printing. If no alternate color was specified on construction, this method will return this.
Returns:the color to use during printing
/** * Return the color to use during printing. If no alternate * color was specified on construction, this method will * return <code>this</code>. * * @return the color to use during printing */
public Color getPrintColor() { return ((printColor != null) ? printColor : this); }
Replaces this object with a plain ColorUIResource during serialization. Since PrintColorUIResource resides in the sun.swing package, access can be disallowed to it by a security manager. When access is disallowed, deserialization of any object with reference to a PrintColorUIResource fails.

Since PrintColorUIResource) is used only by Swing's look and feels, and we know that UI supplied colors are replaced after deserialization when the UI is re-installed, the only important aspect of the {@code PrintColorUIResource} that needs to be persisted is the fact that it is a {@code ColorUIResource}. As such, we can avoid the problem outlined above by replacing the problematic {@code PrintColorUIResource} with a plain {@code ColorUIResource}. <p> Note: As a result of this method, it is not possible to write a {@code PrintColorUIResource} to a stream and then read back a {@code PrintColorUIResource}. This is acceptable since we don't have a requirement for that in Swing.

/** * Replaces this object with a plain {@code ColorUIResource} during * serialization. Since {@code PrintColorUIResource} resides in the * sun.swing package, access can be disallowed to it by a security * manager. When access is disallowed, deserialization of any object * with reference to a {@code PrintColorUIResource} fails. * <p> * Since {@code PrintColorUIResource) is used only by Swing's look * and feels, and we know that UI supplied colors are replaced after * deserialization when the UI is re-installed, the only important * aspect of the {@code PrintColorUIResource} that needs to be * persisted is the fact that it is a {@code ColorUIResource}. As * such, we can avoid the problem outlined above by replacing * the problematic {@code PrintColorUIResource} with a plain * {@code ColorUIResource}. * <p> * Note: As a result of this method, it is not possible to write * a {@code PrintColorUIResource} to a stream and then read * back a {@code PrintColorUIResource}. This is acceptable since we * don't have a requirement for that in Swing. */
private Object writeReplace() { return new ColorUIResource(this); } }