Store order of images separately.

diff --git a/src/main/java/net/pterodactylus/sone/data/Album.java b/src/main/java/net/pterodactylus/sone/data/Album.java
index 89823a8..94eec8f 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/data/Album.java
+++ b/src/main/java/net/pterodactylus/sone/data/Album.java
@@ -23,6 +23,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+import net.pterodactylus.util.collection.Mapper;
+import net.pterodactylus.util.collection.Mappers;
 import net.pterodactylus.util.validation.Validation;
 
 /**
@@ -41,6 +43,9 @@ public class Album implements Fingerprintable {
        /** Nested albums. */
        private final List<Album> albums = new ArrayList<Album>();
 
+       /** The image IDs in order. */
+       private final List<String> imageIds = new ArrayList<String>();
+
        /** The images in this album. */
        private final Map<String, Image> images = new LinkedHashMap<String, Image>();
 
@@ -151,7 +156,15 @@ public class Album implements Fingerprintable {
         * @return The images in this album
         */
        public List<Image> getImages() {
-               return new ArrayList<Image>(images.values());
+               return Mappers.mappedList(imageIds, new Mapper<String, Image>() {
+
+                       @Override
+                       @SuppressWarnings("synthetic-access")
+                       public Image map(String imageId) {
+                               return images.get(imageId);
+                       }
+
+               });
        }
 
        /**
@@ -166,10 +179,11 @@ public class Album implements Fingerprintable {
                        image.getAlbum().removeImage(image);
                }
                image.setAlbum(this);
-               if (images.isEmpty()) {
+               if (imageIds.isEmpty()) {
                        albumImage = image.getId();
                }
-               if (!images.containsKey(image.getId())) {
+               if (!imageIds.contains(image.getId())) {
+                       imageIds.add(image.getId());
                        images.put(image.getId(), image);
                }
        }
@@ -182,7 +196,8 @@ public class Album implements Fingerprintable {
         */
        public void removeImage(Image image) {
                Validation.begin().isNotNull("Image", image).check().isEqual("Image Owner", image.getSone(), sone).check();
-               images.remove(image);
+               imageIds.remove(image.getId());
+               images.remove(image.getId());
                if (image.getId().equals(albumImage)) {
                        if (images.isEmpty()) {
                                albumImage = null;