Source for gnu.javax.print.ipp.attribute.RequestedAttributes

   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 java.util.ArrayList;
  42: import java.util.List;
  43: 
  44: import javax.print.attribute.Attribute;
  45: 
  46: /**
  47:  * <code>RequestedAttributes</code> specifies the requested
  48:  * attributes in an IPP request operation.
  49:  * 
  50:  * @author Wolfgang Baer (WBaer@gmx.de)
  51:  */
  52: public final class RequestedAttributes implements Attribute
  53: {
  54:   private ArrayList attributes;
  55: 
  56:   /**
  57:    * Creates a <code>RequestedAttributes</code> object with 
  58:    * the initial value.
  59:    *
  60:    * @param value the string for the ipp name
  61:    *
  62:    * @exception NullPointerException if value is null
  63:    */
  64:   public RequestedAttributes(String value)
  65:   {
  66:     if (value == null)
  67:       throw new NullPointerException();
  68:     
  69:     attributes = new ArrayList();      
  70:     attributes.add(value);
  71:   }
  72:   
  73:   /**
  74:    * Adds the IPP name value to the set.
  75:    * 
  76:    * @param value the string for the ipp name
  77:    */
  78:   public void addValue(String value)
  79:   {
  80:     attributes.add(value);
  81:   }
  82:   
  83:   /**
  84:    * Returns the values.
  85:    * 
  86:    * @return The values as list.
  87:    */
  88:   public List getValues() 
  89:   {
  90:     return attributes;    
  91:   }
  92: 
  93:   /**
  94:    * Returns category of this class.
  95:    *
  96:    * @return The class <code>DocumentFormat</code> itself.
  97:    */
  98:   public Class getCategory()
  99:   {
 100:     return RequestedAttributes.class;
 101:   }
 102: 
 103:   /**
 104:    * Returns the name of this attribute.
 105:    *
 106:    * @return The name "requested-attributes".
 107:    */
 108:   public String getName()
 109:   {
 110:     return "requested-attributes";
 111:   }
 112: 
 113:   /**
 114:    * Returns the string representation for this object.
 115:    *
 116:    * @return The string representation.
 117:    */
 118:   public String toString()
 119:   {
 120:     StringBuffer b = new StringBuffer();
 121:     
 122:     if (attributes.size() > 0)
 123:       b.append(attributes.get(0));
 124:     
 125:     for (int i=1; i < attributes.size(); i++)
 126:       b.append(", " + attributes.get(i));
 127:     
 128:     return b.toString();
 129:   }  
 130: }