copiessupported.java

java jdk 1.4的源码

/*
 * @(#)CopiesSupported.java	1.4 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.print.attribute.standard;

import javax.print.attribute.SetOfIntegerSyntax;
import javax.print.attribute.SupportedValuesAttribute;

/**
 * Class CopiesSupported is a printing attribute class, a set of integers, that 
 * gives the supported values for a {@link Copies Copies} attribute. It is 
 * restricted to a single contiguous range of integers; multiple non-overlapping 
 * ranges are not allowed. 
 * <P>
 * <B>IPP Compatibility:</B> The CopiesSupported attribute's canonical array 
 * form gives the lower and upper bound for the range of copies to be included 
 * in an IPP "copies-supported" attribute. See class {@link 
 * javax.print.attribute.SetOfIntegerSyntax SetOfIntegerSyntax} for an 
 * explanation of canonical array form. The category name returned by 
 * <CODE>getName()</CODE> gives the IPP attribute name. 
 * <P>
 *
 * @author  Alan Kaminsky
 */
public final class CopiesSupported extends SetOfIntegerSyntax
	implements SupportedValuesAttribute {

    /**
     * Construct a new copies supported attribute containing a single integer. 
     * That is, only the one value of Copies is supported. 
     *
     * @param  member  Set member.
     *
     * @exception  IllegalArgumentException
     *  (Unchecked exception) Thrown if <CODE>member</CODE> is less than 1.
     */
    public CopiesSupported(int member) {
	super (member);
	if (member < 1) {
	    throw new IllegalArgumentException("Copies value < 1 specified");
	}
    }

    /**
     * Construct a new copies supported attribute containing a single range of 
     * integers. That is, only those values of Copies in the one range are 
     * supported. 
     *
     * @param  lowerBound  Lower bound of the range.
     * @param  upperBound  Upper bound of the range.
     *
     * @exception  IllegalArgumentException
     *     (Unchecked exception) Thrown if a null range is specified or if a 
     *     non-null range is specified with <CODE>lowerBound</CODE> less than 
     *     1. 
     */
    public CopiesSupported(int lowerBound, int upperBound) { 
	super(lowerBound, upperBound);
	
	if (lowerBound > upperBound) {
	    throw new IllegalArgumentException("Null range specified");
	} else if (lowerBound < 1) {
	    throw new IllegalArgumentException("Copies value < 1 specified");
	}
    }

    /**
     * Returns whether this copies supported attribute is equivalent to the 
     * passed in object. To be equivalent, all of the following conditions must 
     * be true: 
     * <OL TYPE=1>
     * <LI>
     * <CODE>object</CODE> is not null.
     * <LI>
     * <CODE>object</CODE> is an instance of class CopiesSupported.
     * <LI>
     * This copies supported attribute's members and <CODE>object</CODE>'s 
     * members are the same. 
     * </OL>
     *
     * @param  object  Object to compare to.
     *
     * @return  True if <CODE>object</CODE> is equivalent to this copies
     *          supported attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return super.equals (object) && object instanceof CopiesSupported;
    }

    /**
     * Get the printing attribute class which is to be used as the "category" 
     * for this printing attribute value. 
     * <P>
     * For class CopiesSupported, the category 
     * is class CopiesSupported itself. 
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.Class java.lang.Class}.
     */
    public final Class getCategory() {
	return CopiesSupported.class;
    }

    /**
     * Get the name of the category of which this attribute value is an 
     * instance. 
     * <P>
     * For class CopiesSupported, the category 
     * name is <CODE>"copies-supported"</CODE>.
     *
     * @return  Attribute category name.
     */
    public final String getName() {
	return "copies-supported";
    }
    
}