protected Annotation findAnnotation()

in CasViewerEclipsePlugin/uimaj-ep-casviewer-core/src/main/java/org/apache/uima/casviewer/ui/internal/document/AnnotatedTextComposite.java [688:754]
54 lines of code
25 McCabe index (conditional complexity)

    protected Annotation findAnnotation(final int offset, final int length, boolean forward, Position annotationPosition) {

        Annotation nextAnnotation = null;
        Position nextAnnotationPosition = null;
        Annotation containingAnnotation = null;
        Position containingAnnotationPosition = null;
        boolean currentAnnotation = false;

        // IDocument document= getDocumentProvider().getDocument(getEditorInput());
        int endOfDocument = documentObject.getLength();
        int distance = Integer.MAX_VALUE;

        // IAnnotationModel model= getDocumentProvider().getAnnotationModel(getEditorInput());
        Iterator e = model.getAnnotationIterator();
        while (e.hasNext()) {
            Annotation a = (Annotation) e.next();
//            if (!isNavigationTarget(a))
//                continue;

            Position p = model.getPosition(a);
            if (p == null)
                continue;

            if (forward && p.offset == offset || !forward && p.offset + p.getLength() == offset + length) {// || p.includes(offset)) {
                if (containingAnnotation == null || (forward && p.length >= containingAnnotationPosition.length || !forward && p.length >= containingAnnotationPosition.length)) {
                    containingAnnotation = a;
                    containingAnnotationPosition = p;
                    currentAnnotation = p.length == length;
                }
            } else {
                int currentDistance = 0;

                if (forward) {
                    currentDistance = p.getOffset() - offset;
                    if (currentDistance < 0)
                        currentDistance = endOfDocument + currentDistance;

                    if (currentDistance < distance || currentDistance == distance && p.length < nextAnnotationPosition.length) {
                        distance = currentDistance;
                        nextAnnotation = a;
                        nextAnnotationPosition = p;
                    }
                } else {
                    currentDistance = offset + length - (p.getOffset() + p.length);
                    if (currentDistance < 0)
                        currentDistance = endOfDocument + currentDistance;

                    if (currentDistance < distance || currentDistance == distance && p.length < nextAnnotationPosition.length) {
                        distance = currentDistance;
                        nextAnnotation = a;
                        nextAnnotationPosition = p;
                    }
                }
            }
        }
        if (containingAnnotationPosition != null && (!currentAnnotation || nextAnnotation == null)) {
            annotationPosition.setOffset(containingAnnotationPosition.getOffset());
            annotationPosition.setLength(containingAnnotationPosition.getLength());
            return containingAnnotation;
        }
        if (nextAnnotationPosition != null) {
            annotationPosition.setOffset(nextAnnotationPosition.getOffset());
            annotationPosition.setLength(nextAnnotationPosition.getLength());
        }

        return nextAnnotation;
    }