257         tempMap.put("richtext", Boolean.TRUE);
 258         tempMap.put("uri-list", Boolean.TRUE);
 259         tempMap.put("directory", Boolean.TRUE);
 260         tempMap.put("css", Boolean.TRUE);
 261         tempMap.put("calendar", Boolean.TRUE);
 262         tempMap.put("plain", Boolean.TRUE);
 263         tempMap.put("rtf", Boolean.FALSE);
 264         tempMap.put("tab-separated-values", Boolean.FALSE);
 265         tempMap.put("t140", Boolean.FALSE);
 266         tempMap.put("rfc822-headers", Boolean.FALSE);
 267         tempMap.put("parityfec", Boolean.FALSE);
 268         textMIMESubtypeCharsetSupport = Collections.synchronizedMap(tempMap);
 269     }
 270 
 271     /**
 272      * The accessor method for the singleton DataTransferer instance. Note
 273      * that in a headless environment, there may be no DataTransferer instance;
 274      * instead, null will be returned.
 275      */
 276     public static synchronized DataTransferer getInstance() {
 277         return ((SunToolkit) Toolkit.getDefaultToolkit()).getDataTransferer();
 278     }
 279 
 280     /**
 281      * Converts an arbitrary text encoding to its canonical name.
 282      */
 283     public static String canonicalName(String encoding) {
 284         if (encoding == null) {
 285             return null;
 286         }
 287         try {
 288             return Charset.forName(encoding).name();
 289         } catch (IllegalCharsetNameException icne) {
 290             return encoding;
 291         } catch (UnsupportedCharsetException uce) {
 292             return encoding;
 293         }
 294     }
 295 
 296     /**
 297      * If the specified flavor is a text flavor which supports the "charset"

 257         tempMap.put("richtext", Boolean.TRUE);
 258         tempMap.put("uri-list", Boolean.TRUE);
 259         tempMap.put("directory", Boolean.TRUE);
 260         tempMap.put("css", Boolean.TRUE);
 261         tempMap.put("calendar", Boolean.TRUE);
 262         tempMap.put("plain", Boolean.TRUE);
 263         tempMap.put("rtf", Boolean.FALSE);
 264         tempMap.put("tab-separated-values", Boolean.FALSE);
 265         tempMap.put("t140", Boolean.FALSE);
 266         tempMap.put("rfc822-headers", Boolean.FALSE);
 267         tempMap.put("parityfec", Boolean.FALSE);
 268         textMIMESubtypeCharsetSupport = Collections.synchronizedMap(tempMap);
 269     }
 270 
 271     /**
 272      * The accessor method for the singleton DataTransferer instance. Note
 273      * that in a headless environment, there may be no DataTransferer instance;
 274      * instead, null will be returned.
 275      */
 276     public static synchronized DataTransferer getInstance() {
 277         return ((ComponentFactory) Toolkit.getDefaultToolkit()).getDataTransferer();
 278     }
 279 
 280     /**
 281      * Converts an arbitrary text encoding to its canonical name.
 282      */
 283     public static String canonicalName(String encoding) {
 284         if (encoding == null) {
 285             return null;
 286         }
 287         try {
 288             return Charset.forName(encoding).name();
 289         } catch (IllegalCharsetNameException icne) {
 290             return encoding;
 291         } catch (UnsupportedCharsetException uce) {
 292             return encoding;
 293         }
 294     }
 295 
 296     /**
 297      * If the specified flavor is a text flavor which supports the "charset"