numberupsupported.java

java jdk 1.4的源码

/*
 * @(#)NumberUpSupported.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 NumberUpSupported is a printing attribute class, a set of integers, 
 * that gives the supported values for a {@link NumberUp NumberUp} attribute. 
 * <P>
 * <B>IPP Compatibility:</B> The NumberUpSupported attribute's canonical array 
 * form gives the lower and upper bound for each range of number-up to be 
 * included in an IPP "number-up-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 NumberUpSupported	extends SetOfIntegerSyntax
	implements SupportedValuesAttribute {

    /**
     * Construct a new number up supported attribute with the given members.
     * The supported values for NumberUp are specified in "array form;" see 
     * class 
     * {@link javax.print.attribute.SetOfIntegerSyntax SetOfIntegerSyntax} 
     * for an explanation of array form. 
     *
     * @param  members  Set members in array form.
     *
     * @exception  NullPointerException
     *     (unchecked exception) Thrown if <CODE>members</CODE> is null or 
     *     any element of <CODE>members</CODE> is null. 
     * @exception  IllegalArgumentException
     *     (unchecked exception) Thrown if any element of 
     *   <CODE>members</CODE> is not a length-one or length-two array. Also 
     *    thrown if <CODE>members</CODE> is a zero-length array or if any 
     *    member of the set is less than 1. 
     */
    public NumberUpSupported(int[][] members) {
	super (members);
	if (members == null) {
	    throw new NullPointerException("members is null");
	}
	int[][] myMembers = getMembers();
	int n = myMembers.length;
	if (n == 0) {
	    throw new IllegalArgumentException("members is zero-length");
	}
	int i;
	for (i = 0; i < n; ++ i) {
	    if (myMembers[i][0] < 1) {
		throw new IllegalArgumentException
		    ("Number up value must be > 0");
	    }
	}
    }

    /**
     * Construct a new number up supported attribute containing a single 
     * integer. That is, only the one value of NumberUp is supported. 
     *
     * @param  member  Set member.
     *
     * @exception  IllegalArgumentException
     *     (Unchecked exception) Thrown if <CODE>member</CODE> is less than 
     *     1. 
     */
    public NumberUpSupported(int member) {
	super (member);
	if (member < 1) {
	    throw new IllegalArgumentException("Number up value must be > 0");
	}
    }

    /**
     * Construct a new number up supported attribute containing a single range 
     * of integers. That is, only those values of NumberUp 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 NumberUpSupported(int lowerBound, int upperBound) {
	super (lowerBound, upperBound);
	if (lowerBound > upperBound) {
	    throw new IllegalArgumentException("Null range specified");
	} else if (lowerBound < 1) {
	    throw new IllegalArgumentException
		("Number up value must be > 0");
	}
    }

    /**
     * Returns whether this number up 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 NumberUpSupported.
     * <LI>
     * This number up 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 number up
     *          supported attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return (super.equals (object) &&
		object instanceof NumberUpSupported);
    }

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

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