Examples of org.eclipse.jface.text.Position

org.eclipse.jface.text.Position
Positions describe text ranges of a document. Positions are adapted to changes applied to that document. The text range is specified by an offset and a length. Positions can be marked as deleted. Deleted positions are considered to no longer represent a valid text range in the managing document.
Positions attached to documents are usually updated by position updaters. Because position updaters are freely definable and because of the frequency in which they are used, the fields of a position are made publicly accessible. Clients other than position updaters are not allowed to access these public fields.

Positions cannot be used as keys in hash tables as they override equals and hashCode as they would be value objects.
@see org.eclipse.jface.text.IDocument

            
            List lines = new ArrayList();
            for (Iterator i = model.getAnnotationIterator(); i.hasNext();)
            {
                Annotation a = (Annotation) i.next();
                Position p = model.getPosition(a);
                
                StringBuffer buf = new StringBuffer();
                buf.append(p.getOffset());
                buf.append(':');
                buf.append(p.getLength());
                buf.append(':');
                buf.append(a.getType());
                lines.add(buf.toString());
            }
            Collections.sort(lines);

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    }
    return newLines;
  }


  protected void emitPosition(int startOffset, int length) {
    fPositions.add(new Position(startOffset, length));
  }

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     *
     * @see org.eclipse.compare.structuremergeviewer.DocumentRangeNode#addChild(org.eclipse.compare.structuremergeviewer.DocumentRangeNode)
     */
    @Override
    public void addChild(final DocumentRangeNode node) {
        final Position p = rangeUnion(getRange(), node.getRange());
        final Position r = getRange();
        r.setOffset(p.getOffset());
        r.setLength(p.getLength());
        super.addChild(node);
    }

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    private Position rangeUnion(final Position a, final Position b) {
        final int offsetA = a.getOffset(), offsetB = b.getOffset();
        final int endA = offsetA + a.getLength(), endB = offsetB + b.getLength();
        final int end = Math.max(endA, endB);
        final int offset = Math.min(offsetA, offsetB);
        return new Position(offset, end - offset);
    }

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            createProjection = true;
        }
        if (createProjection) {
            final IRegion region = computeProjectionRanges(element);
            if (region != null) {
                final Position position = createProjectionPosition(region, element);
                if (position != null) {
                    map.put(new ErlangProjectionAnnotation(element, collapse
                            && fFirstTimeInitialCollapse, element instanceof IErlComment),
                            position);
                }

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            for (final Entry<ErlangProjectionAnnotation, Position> entry : updated
                    .entrySet()) {
                final ErlangProjectionAnnotation newAnnotation = entry.getKey();
                final IErlElement element = newAnnotation.getElement();
                final Position newPosition = entry.getValue();


                final List<Tuple> annotations = previous.get(element);
                if (annotations == null) {


                    additions.put(newAnnotation, newPosition);


                } else {
                    final Iterator<Tuple> x = annotations.iterator();
                    boolean matched = false;
                    while (x.hasNext()) {
                        final Tuple tuple = x.next();
                        final ErlangProjectionAnnotation existingAnnotation = tuple.annotation;
                        final Position existingPosition = tuple.position;
                        if (newAnnotation.isComment() == existingAnnotation.isComment()) {
                            if (existingPosition != null
                                    && !newPosition.equals(existingPosition)) {
                                existingPosition.setOffset(newPosition.getOffset());
                                existingPosition.setLength(newPosition.getLength());
                                updates.add(existingAnnotation);
                            }
                            matched = true;
                            x.remove();
                            break;

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        final Iterator<ErlangProjectionAnnotation> deletionIterator = deletions
                .iterator();
        while (deletionIterator.hasNext()) {
            final ErlangProjectionAnnotation deleted = deletionIterator.next();
            final Position deletedPosition = fCachedModel.getPosition(deleted);
            if (deletedPosition == null) {
                continue;
            }


            final Tuple deletedTuple = new Tuple(deleted, deletedPosition);


            Tuple match = findMatch(deletedTuple, changes, null);
            boolean addToDeletions = true;
            if (match == null) {
                match = findMatch(deletedTuple, additions.keySet(), additions);
                addToDeletions = false;
            }


            if (match != null) {
                final IErlElement element = match.annotation.getElement();
                deleted.setElement(element);
                deletedPosition.setLength(match.position.getLength());
                if (deletedPosition instanceof ErlangElementPosition
                        && element instanceof IErlMember) {
                    final ErlangElementPosition eep = (ErlangElementPosition) deletedPosition;
                    eep.setMember((IErlMember) element);
                }

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            final Map<ErlangProjectionAnnotation, Position> positionMap) {
        final Iterator<ErlangProjectionAnnotation> it = annotations.iterator();
        while (it.hasNext()) {
            final ErlangProjectionAnnotation annotation = it.next();
            if (tuple.annotation.isComment() == annotation.isComment()) {
                final Position position = positionMap == null ? fCachedModel
                        .getPosition(annotation) : positionMap.get(annotation);
                if (position == null) {
                    continue;
                }


                if (tuple.position.getOffset() == position.getOffset()) {
                    it.remove();
                    return new Tuple(annotation, position);
                }
            }
        }

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        final Iterator<?> e = model.getAnnotationIterator();
        while (e.hasNext()) {
            final Object annotation = e.next();
            if (annotation instanceof ErlangProjectionAnnotation) {
                final ErlangProjectionAnnotation epa = (ErlangProjectionAnnotation) annotation;
                final Position position = model.getPosition(epa);
                List<Tuple> list = map.get(epa.getElement());
                if (list == null) {
                    list = new ArrayList<Tuple>(2);
                    map.put(epa.getElement(), list);
                }

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            for (final MarkOccurencesSupport.ErlangRef ref : fRefs) {
                if (isCanceled(progressMonitor)) {
                    return Status.CANCEL_STATUS;
                }


                final Position position = new Position(ref.getOffset(), ref.getLength());


                final String description = ref.getDescription();
                final String annotationType = ref.isDef() ? "org.erlide.ui.occurrences.definition" //$NON-NLS-1$
                        : "org.erlide.ui.occurrences";

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