+ /**
+ * Comparator that sorts Sones by last activity (least recent active first).
+ */
+ public static final Comparator<Sone> LAST_ACTIVITY_COMPARATOR = new Comparator<Sone>() {
+
+ @Override
+ public int compare(Sone firstSone, Sone secondSone) {
+ return (int) Math.min(Integer.MAX_VALUE, Math.max(Integer.MIN_VALUE, secondSone.getTime() - firstSone.getTime()));
+ }
+ };
+
+ /** Comparator that sorts Sones by numbers of posts (descending). */
+ public static final Comparator<Sone> POST_COUNT_COMPARATOR = new Comparator<Sone>() {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int compare(Sone leftSone, Sone rightSone) {
+ return (leftSone.getPosts().size() != rightSone.getPosts().size()) ? (rightSone.getPosts().size() - leftSone.getPosts().size()) : (rightSone.getReplies().size() - leftSone.getReplies().size());
+ }
+ };
+
+ /** Comparator that sorts Sones by number of images (descending). */
+ public static final Comparator<Sone> IMAGE_COUNT_COMPARATOR = new Comparator<Sone>() {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int compare(Sone leftSone, Sone rightSone) {
+ return rightSone.getAllImages().size() - leftSone.getAllImages().size();
+ }
+ };
+
+ /** Filter to remove Sones that have not been downloaded. */
+ public static final Filter<Sone> EMPTY_SONE_FILTER = new Filter<Sone>() {
+
+ @Override
+ public boolean filterObject(Sone sone) {
+ return sone.getTime() != 0;
+ }
+ };
+
+ /** Filter that matches all {@link Core#isLocalSone(Sone) local Sones}. */
+ public static final Filter<Sone> LOCAL_SONE_FILTER = new Filter<Sone>() {
+
+ @Override
+ public boolean filterObject(Sone sone) {
+ return sone.getIdentity() instanceof OwnIdentity;
+ }
+
+ };
+
+ /** Filter that matches Sones that have at least one album. */
+ public static final Filter<Sone> HAS_ALBUM_FILTER = new Filter<Sone>() {
+
+ @Override
+ public boolean filterObject(Sone sone) {
+ return !sone.getAlbums().isEmpty();
+ }
+ };
+