/**
* Constructs an {@code AttributedString} from an {@code AttributedCharacterIterator}, which
* represents attributed text.
*
* @param iterator the {@code AttributedCharacterIterator} that contains the text for this
* attributed string.
*/
public AttributedString(AttributedCharacterIterator iterator) {
if (iterator.getBeginIndex() > iterator.getEndIndex()) {
// text.0A=Invalid substring range
throw new IllegalArgumentException(Messages.getString("text.0A")); // $NON-NLS-1$
}
StringBuilder buffer = new StringBuilder();
for (int i = iterator.getBeginIndex(); i < iterator.getEndIndex(); i++) {
buffer.append(iterator.current());
iterator.next();
}
text = buffer.toString();
Set<AttributedCharacterIterator.Attribute> attributes = iterator.getAllAttributeKeys();
if (attributes == null) {
return;
}
attributeMap = new HashMap<Attribute, List<Range>>((attributes.size() * 4 / 3) + 1);
Iterator<Attribute> it = attributes.iterator();
while (it.hasNext()) {
AttributedCharacterIterator.Attribute attribute = it.next();
iterator.setIndex(0);
while (iterator.current() != CharacterIterator.DONE) {
int start = iterator.getRunStart(attribute);
int limit = iterator.getRunLimit(attribute);
Object value = iterator.getAttribute(attribute);
if (value != null) {
addAttribute(attribute, value, start, limit);
}
iterator.setIndex(limit);
}
}
}
/** 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;
}
private AttributedString(
AttributedCharacterIterator iterator, int start, int end, Set<Attribute> attributes) {
if (start < iterator.getBeginIndex() || end > iterator.getEndIndex() || start > end) {
throw new IllegalArgumentException();
}
if (attributes == null) {
return;
}
StringBuilder buffer = new StringBuilder();
iterator.setIndex(start);
while (iterator.getIndex() < end) {
buffer.append(iterator.current());
iterator.next();
}
text = buffer.toString();
attributeMap = new HashMap<Attribute, List<Range>>((attributes.size() * 4 / 3) + 1);
Iterator<Attribute> it = attributes.iterator();
while (it.hasNext()) {
AttributedCharacterIterator.Attribute attribute = it.next();
iterator.setIndex(start);
while (iterator.getIndex() < end) {
Object value = iterator.getAttribute(attribute);
int runStart = iterator.getRunStart(attribute);
int limit = iterator.getRunLimit(attribute);
if ((value instanceof Annotation && runStart >= start && limit <= end)
|| (value != null && !(value instanceof Annotation))) {
addAttribute(
attribute,
value,
(runStart < start ? start : runStart) - start,
(limit > end ? end : limit) - start);
}
iterator.setIndex(limit);
}
}
}
