libjava/classpath/gnu/javax/print/ipp/attribute/RequestedAttributes.java

   1 /* RequestedAttributes.java --
   2    Copyright (C) 2006 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.javax.print.ipp.attribute;
  40
  41 import gnu.java.lang.CPStringBuilder;
  42
  43 import java.util.ArrayList;
  44 import java.util.List;
  45
  46 import javax.print.attribute.Attribute;
  47
  48 /**
  49  * <code>RequestedAttributes</code> specifies the requested
  50  * attributes in an IPP request operation.
  51  *
  52  * @author Wolfgang Baer (WBaer@gmx.de)
  53  */
  54 public final class RequestedAttributes implements Attribute
  55 {
  56   private ArrayList attributes;
  57
  58   /**
  59    * Creates a <code>RequestedAttributes</code> object with
  60    * the initial value.
  61    *
  62    * @param value the string for the ipp name
  63    *
  64    * @exception NullPointerException if value is null
  65    */
  66   public RequestedAttributes(String value)
  67   {
  68     if (value == null)
  69       throw new NullPointerException();
  70
  71     attributes = new ArrayList();
  72     attributes.add(value);
  73   }
  74
  75   /**
  76    * Adds the IPP name value to the set.
  77    *
  78    * @param value the string for the ipp name
  79    */
  80   public void addValue(String value)
  81   {
  82     attributes.add(value);
  83   }
  84
  85   /**
  86    * Returns the values.
  87    *
  88    * @return The values as list.
  89    */
  90   public List getValues()
  91   {
  92     return attributes;
  93   }
  94
  95   /**
  96    * Returns category of this class.
  97    *
  98    * @return The class <code>DocumentFormat</code> itself.
  99    */
 100   public Class getCategory()
 101   {
 102     return RequestedAttributes.class;
 103   }
 104
 105   /**
 106    * Returns the name of this attribute.
 107    *
 108    * @return The name "requested-attributes".
 109    */
 110   public String getName()
 111   {
 112     return "requested-attributes";
 113   }
 114
 115   /**
 116    * Returns the string representation for this object.
 117    *
 118    * @return The string representation.
 119    */
 120   public String toString()
 121   {
 122     CPStringBuilder b = new CPStringBuilder();
 123
 124     if (attributes.size() > 0)
 125       b.append(attributes.get(0));
 126
 127     for (int i=1; i < attributes.size(); i++)
 128       b.append(", " + attributes.get(i));
 129
 130     return b.toString();
 131   }
 132 }