/** Returns a Set of the attribute identifiers at <code>index</code>. */
Map getAttributes(int index) {
if (isValidMask()) {
AttributedCharacterIterator iterator = getIterator();
if (index >= 0 && index <= iterator.getEndIndex()) {
iterator.setIndex(index);
return iterator.getAttributes();
}
}
return null;
}
public void actionPerformed(ActionEvent ae) {
if (getFormattedTextField().isEditable()) {
if (getAllowsInvalid()) {
// This will work if the currently edited value is valid.
updateMask();
}
boolean validEdit = false;
if (isValidMask()) {
int start = getFormattedTextField().getSelectionStart();
if (start != -1) {
AttributedCharacterIterator iterator = getIterator();
iterator.setIndex(start);
Map attributes = iterator.getAttributes();
Object field = getAdjustField(start, attributes);
if (canIncrement(field, start)) {
try {
Object value = stringToValue(getFormattedTextField().getText());
int fieldTypeCount = getFieldTypeCountTo(field, start);
value = adjustValue(value, attributes, field, direction);
if (value != null && isValidValue(value, false)) {
resetValue(value);
updateMask();
if (isValidMask()) {
selectField(field, fieldTypeCount);
}
validEdit = true;
}
} catch (ParseException pe) {
} catch (BadLocationException ble) {
}
}
}
}
if (!validEdit) {
invalidEdit();
}
}
}
/**
* Updates the interal bitset from <code>iterator</code>. This will set <code>validMask</code> to
* true if <code>iterator</code> is non-null.
*/
private void updateMask(AttributedCharacterIterator iterator) {
if (iterator != null) {
validMask = true;
this.iterator = iterator;
// Update the literal mask
if (literalMask == null) {
literalMask = new BitSet();
} else {
for (int counter = literalMask.length() - 1; counter >= 0; counter--) {
literalMask.clear(counter);
}
}
iterator.first();
while (iterator.current() != CharacterIterator.DONE) {
Map attributes = iterator.getAttributes();
boolean set = isLiteral(attributes);
int start = iterator.getIndex();
int end = iterator.getRunLimit();
while (start < end) {
if (set) {
literalMask.set(start);
} else {
literalMask.clear(start);
}
start++;
}
iterator.setIndex(start);
}
}
}
/** Selects the fields identified by <code>attributes</code>. */
void selectField(Object f, int count) {
AttributedCharacterIterator iterator = getIterator();
if (iterator != null && (f instanceof AttributedCharacterIterator.Attribute)) {
AttributedCharacterIterator.Attribute field = (AttributedCharacterIterator.Attribute) f;
iterator.first();
while (iterator.current() != CharacterIterator.DONE) {
while (iterator.getAttribute(field) == null && iterator.next() != CharacterIterator.DONE) ;
if (iterator.current() != CharacterIterator.DONE) {
int limit = iterator.getRunLimit(field);
if (--count <= 0) {
getFormattedTextField().select(iterator.getIndex(), limit);
break;
}
iterator.setIndex(limit);
iterator.next();
}
}
}
}
/**
* Returns the number of occurences of <code>f</code> before the location <code>start</code> in
* the current <code>AttributedCharacterIterator</code>.
*/
private int getFieldTypeCountTo(Object f, int start) {
AttributedCharacterIterator iterator = getIterator();
int count = 0;
if (iterator != null && (f instanceof AttributedCharacterIterator.Attribute)) {
AttributedCharacterIterator.Attribute field = (AttributedCharacterIterator.Attribute) f;
int index = 0;
iterator.first();
while (iterator.getIndex() < start) {
while (iterator.getAttribute(field) == null && iterator.next() != CharacterIterator.DONE) ;
if (iterator.current() != CharacterIterator.DONE) {
iterator.setIndex(iterator.getRunLimit(field));
iterator.next();
count++;
} else {
break;
}
}
}
return count;
}
/**
* Returns the start of the first run that contains the attribute <code>id</code>. This will
* return <code>-1</code> if the attribute can not be found.
*/
int getAttributeStart(AttributedCharacterIterator.Attribute id) {
if (isValidMask()) {
AttributedCharacterIterator iterator = getIterator();
iterator.first();
while (iterator.current() != CharacterIterator.DONE) {
if (iterator.getAttribute(id) != null) {
return iterator.getIndex();
}
iterator.next();
}
}
return -1;
}
