libjava/java/beans/FeatureDescriptor.java

   1 /* java.beans.FeatureDescriptor
   2    Copyright (C) 1998 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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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 java.beans;
  40
  41 import java.util.Enumeration;
  42 import java.util.Hashtable;
  43
  44 /**
  45  * FeatureDescriptor is the common superclass for all JavaBeans Descriptor
  46  * classes. JavaBeans descriptors are abstract descriptors of properties,
  47  * events, methods, beans, etc.<P>
  48  *
  49  * <STRONG>Documentation Convention:</STRONG> for proper
  50  * Internalization of Beans inside an RAD tool, sometimes there
  51  * are two names for a property or method: a programmatic, or
  52  * locale-independent name, which can be used anywhere, and a
  53  * localized, display name, for ease of use.  In the
  54  * documentation I will specify different String values as
  55  * either <EM>programmatic</EM> or <EM>localized</EM> to
  56  * make this distinction clear.
  57  *
  58  * @author John Keiser
  59  * @since 1.1
  60  * @version 1.1.0, 31 May 1998
  61  */
  62
  63 public class FeatureDescriptor
  64 {
  65   String name;
  66   String displayName;
  67   String shortDescription;
  68   boolean expert;
  69   boolean hidden;
  70   boolean preferred;
  71
  72   Hashtable valueHash;
  73
  74   /**
  75    * Instantiate this FeatureDescriptor with appropriate default values.
  76    */
  77   public FeatureDescriptor()
  78   {
  79     valueHash = new Hashtable();
  80   }
  81
  82   /**
  83    * Get the programmatic name of this feature.
  84    */
  85   public String getName()
  86   {
  87     return name;
  88   }
  89
  90   /**
  91    * Set the programmatic name of this feature.
  92    *
  93    * @param name the new name for this feature.
  94    */
  95   public void setName(String name)
  96   {
  97     this.name = name;
  98   }
  99
 100   /**
 101    * Get the localized (display) name of this feature.
 102    */
 103   public String getDisplayName()
 104   {
 105     return displayName;
 106   }
 107
 108   /**
 109    * Set the localized (display) name of this feature.
 110    *
 111    * @param displayName the new display name for this feature.
 112    */
 113   public void setDisplayName(String displayName)
 114   {
 115     this.displayName = displayName;
 116   }
 117
 118   /**
 119    * Get the localized short description for this feature.
 120    */
 121   public String getShortDescription()
 122   {
 123     return shortDescription;
 124   }
 125
 126   /**
 127    * Set the localized short description for this feature.
 128    *
 129    * @param shortDescription the new short description for this feature.
 130    */
 131   public void setShortDescription(String shortDescription)
 132   {
 133     this.shortDescription = shortDescription;
 134   }
 135
 136   /**
 137    * Indicates whether this feature is for expert use only.
 138    *
 139    * @return true if for use by experts only,
 140    * or false if anyone can use it.
 141    */
 142   public boolean isExpert()
 143   {
 144     return expert;
 145   }
 146
 147   /**
 148    * Set whether this feature is for expert use only.
 149    *
 150    * @param expert true if for use by experts only,
 151    * or false if anyone can use it.
 152    */
 153   public void setExpert(boolean expert)
 154   {
 155     this.expert = expert;
 156   }
 157
 158   /**
 159    * Indicates whether this feature is for use by tools only.
 160    * If it is for use by tools only, then it should not be displayed.
 161    *
 162    * @return true if tools only should use it,
 163    * or false if anyone can see it.
 164    */
 165   public boolean isHidden()
 166   {
 167     return hidden;
 168   }
 169
 170   /**
 171    * Set whether this feature is for use by tools only.
 172    * If it is for use by tools only, then it should not be displayed.
 173    *
 174    * @param hidden true if tools only should use it,
 175    * or false if anyone can see it.
 176    */
 177   public void setHidden(boolean hidden)
 178   {
 179     this.hidden = hidden;
 180   }
 181
 182   public boolean isPreferred ()
 183   {
 184     return preferred;
 185   }
 186
 187   public void setPreferred (boolean preferred)
 188   {
 189     this.preferred = preferred;
 190   }
 191
 192   /**
 193    * Get an arbitrary value set with setValue().
 194    *
 195    * @param name the programmatic name of the key.
 196    *
 197    * @return the value associated with this name,
 198    * or null if there is none.
 199    */
 200   public Object getValue(String name)
 201   {
 202     return valueHash.get(name);
 203   }
 204
 205   /**
 206    * Set an arbitrary string-value pair with this feature.
 207    *
 208    * @param name the programmatic name of the key.
 209    * @param value the value to associate with the name.
 210    */
 211   public void setValue(String name, Object value)
 212   {
 213     valueHash.put(name, value);
 214   }
 215
 216   /**
 217    * Get a list of the programmatic key names set with setValue().
 218    *
 219    * @return an Enumerator over all the programmatic key names associated
 220    * with this feature.
 221    */
 222   public Enumeration attributeNames()
 223   {
 224     return valueHash.keys();
 225   }
 226 }