- public Image moveImageDown(Image image) {
- checkNotNull(image, "image must not be null");
- checkNotNull(image.getSone(), "image must have an owner");
- checkArgument(image.getSone().equals(sone), "image must belong to the same Sone as this album");
- checkArgument(image.getAlbum().equals(this), "image must belong to this album");
- int oldIndex = imageIds.indexOf(image.getId());
- if ((oldIndex == -1) || (oldIndex >= (imageIds.size() - 1))) {
- return null;
- }
- imageIds.remove(image.getId());
- imageIds.add(oldIndex + 1, image.getId());
- return images.get(imageIds.get(oldIndex));
- }
-
- /**
- * Returns the album image of this album, or {@code null} if no album image
- * has been set.
- *
- * @return The image to show when this album is listed
- */
- public Image getAlbumImage() {
- if (albumImage == null) {
- return null;
- }
- return Optional.fromNullable(images.get(albumImage)).or(images.values().iterator().next());
- }