/** Updates the AttributedCharacterIterator and bitset, if necessary. */
void updateMaskIfNecessary() {
if (!getAllowsInvalid() && (getFormat() != null)) {
if (!isValidMask()) {
updateMask();
} else {
String newString = getFormattedTextField().getText();
if (!newString.equals(string)) {
updateMask();
}
}
}
}
/**
* Updates the AttributedCharacterIterator by invoking <code>formatToCharacterIterator</code> on
* the <code>Format</code>. If this is successful, <code>updateMask(AttributedCharacterIterator)
* </code> is then invoked to update the internal bitmask.
*/
void updateMask() {
if (getFormat() != null) {
Document doc = getFormattedTextField().getDocument();
validMask = false;
if (doc != null) {
try {
string = doc.getText(0, doc.getLength());
} catch (BadLocationException ble) {
string = null;
}
if (string != null) {
try {
Object value = stringToValue(string);
AttributedCharacterIterator iterator = getFormat().formatToCharacterIterator(value);
updateMask(iterator);
} catch (ParseException pe) {
} catch (IllegalArgumentException iae) {
} catch (NullPointerException npe) {
}
}
}
}
}
/**
* Returns the <code>Format.Field</code> constants associated with the text at <code>offset</code>
* . If <code>offset</code> is not a valid location into the current text, this will return an
* empty array.
*
* @param offset offset into text to be examined
* @return Format.Field constants associated with the text at the given position.
*/
public Format.Field[] getFields(int offset) {
if (getAllowsInvalid()) {
// This will work if the currently edited value is valid.
updateMask();
}
Map attrs = getAttributes(offset);
if (attrs != null && attrs.size() > 0) {
ArrayList al = new ArrayList();
al.addAll(attrs.keySet());
return (Format.Field[]) al.toArray(EMPTY_FIELD_ARRAY);
}
return EMPTY_FIELD_ARRAY;
}
