+ public void moveImageUp(Image image) {
+ Validation.begin().isNotNull("Image", image).check().isEqual("Image Album", image.getAlbum(), this).isEqual("Album Owner", image.getAlbum().getSone(), sone).check();
+ int oldIndex = imageIds.indexOf(image.getId());
+ if (oldIndex <= 0) {
+ return;
+ }
+ imageIds.remove(image.getId());
+ imageIds.add(oldIndex - 1, image.getId());
+ }
+
+ /**
+ * Move the given image down in this album’s images. If the image is already
+ * the last image, nothing happens.
+ *
+ * @param image
+ * The image to move down
+ */
+ public void moveImageDown(Image image) {
+ Validation.begin().isNotNull("Image", image).check().isEqual("Image Album", image.getAlbum(), this).isEqual("Album Owner", image.getAlbum().getSone(), sone).check();
+ int oldIndex = imageIds.indexOf(image.getId());
+ if ((oldIndex == -1) || (oldIndex >= (imageIds.size() - 1))) {
+ return;
+ }
+ imageIds.remove(image.getId());
+ imageIds.add(oldIndex + 1, image.getId());
+ }
+
+ /**
+ * 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 Default.forNull(images.get(albumImage), images.values().iterator().next());