Re: [Geotools-gt2-users] Formatting JFormattedTextField

[Michael B. <mic...@gm...>]

2008/12/2 Michael Bedward <mic...@gm...>:
> 2008/12/2 Paulo Santos <prs...@gm...>:
>> As format a JFormattedTextField with 99º99' 99.99' '? I am using NetBeans
>> 6.1. My Text must be 99º99' 99.99' ' e my Value 99999999.
>
> Hi Paulo
>
> You need a class derived from JFormattedTextField.AbstractFormatter to
> do this for you...  and I just happen to have one here :)
>

...and here it is again without stupid the stupid bugs that affect
negative coordinates

Michael

/**
 * Formatter to handle DMS data with JFormattedTextField
 *
 * @author Michael Bedward <mic...@gm...>
 */
class DMSFormatter extends JFormattedTextField.AbstractFormatter {

   public static final String DEGREES = "\u00B0";
   public static final String MINUTES = "\'";
   public static final String SECONDS = "\"";
   public static final String DECIMAL = ".";

   private static final String[] delims = {DEGREES, MINUTES, DECIMAL, SECONDS};

   /**
    * Parse a string of degrees, minutes, seconds, decimal seconds
    * to an Long representation
    * @param text input string
    * @return a new Long value
    * @throws java.text.ParseException
    */
   @Override
   public Object stringToValue(String str) throws ParseException {
       long value = 0;

       String tStr = str.trim();

       boolean negative = false;
       if (tStr.startsWith("-")) {
           negative = true;
           tStr = tStr.substring(1);
       }

       int pos = 0;
       long x = 1000000;

       for (String delim : delims) {
           int index = tStr.indexOf(delim, pos);
           if (index > pos) {
               int part = Integer.parseInt(tStr.substring(pos, index));
               value += x * part;
               pos = index + 1;
           }
           x /= 100;
       }

       return new Long(value);
   }

   /**
    * Format 99999999 as 99d99m99.99s
    * @param value an Integer value
    * @return formatted string
    * @throws java.text.ParseException
    */
   @Override
   public String valueToString(Object value) throws ParseException {
       long lval = (Integer)value;
       StringBuilder sb = new StringBuilder();

       if (lval < 0) {
           lval = -lval;
           sb.append("-");
       }

       long[] parts = new long[4];
       for (int i = 0; i < parts.length; i++) {
           if (lval > 0) {
               parts[i] = lval % 100;
               lval /= 100;
           } else {
               parts[i] = 0;
           }
       }

       for (int i = 0; i < parts.length; i++) {
           sb.append(parts[parts.length - i - 1]);
           sb.append(delims[i]);
       }

       return sb.toString();
   }
}