Also reset texture-gallery on map-purge

Author: TBlueF

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/rendermanager/MapPurgeTask.java

@@ -29,6 +29,7 @@
 import de.bluecolored.bluemap.core.storage.Storage;
 import de.bluecolored.bluemap.core.storage.file.FileStorage;
 import de.bluecolored.bluemap.core.util.DeletingPathVisitor;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
 import java.nio.file.Files;
@@ -56,7 +57,7 @@ public static MapPurgeTask create(Path mapDirectory) throws IOException {
     @DebugDump
     private static class MapFilePurgeTask extends MapPurgeTask {
 
-        private final BmMap map;
+        @Nullable private final BmMap map;
         private final Path directory;
         private final int subFilesCount;
         private final LinkedList<Path> subFiles;
@@ -72,7 +73,7 @@ public MapFilePurgeTask(BmMap map, FileStorage fileStorage) throws IOException {
             this(map, fileStorage.getFilePath(map.getId()));
         }
 
-        private MapFilePurgeTask(BmMap map, Path directory) throws IOException {
+        private MapFilePurgeTask(@Nullable BmMap map, Path directory) throws IOException {
             this.map = map;
             this.directory = directory;
             try (Stream<Path> pathStream = Files.walk(directory, 3)) {
@@ -92,7 +93,7 @@ public void doWork() throws Exception {
 
             try {
                 // save lowres-tile-manager to clear/flush any buffered data
-                this.map.getLowresTileManager().save();
+                if (this.map != null) this.map.getLowresTileManager().save();
 
                 // delete subFiles first to be able to track the progress and cancel
                 while (!subFiles.isEmpty()) {
@@ -106,6 +107,10 @@ public void doWork() throws Exception {
                 if (Files.exists(directory)) {
                     Files.walkFileTree(directory, DeletingPathVisitor.INSTANCE);
                 }
+
+                // reset texture-gallery
+                if (this.map != null) this.map.resetTextureGallery();
+
             } finally {
                 // reset map render state
                 if (this.map != null) {

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/map/BmMap.java

@@ -181,6 +181,11 @@ private void saveTextureGallery() {
         }
     }
 
+    public synchronized void resetTextureGallery() {
+        this.textureGallery.clear();
+        this.textureGallery.put(this.resourcePack);
+    }
+
     private void saveMapSettings() {
         try (
                 OutputStream out = storage.writeMeta(id, MetaType.SETTINGS);

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/map/TextureGallery.java

@@ -24,6 +24,11 @@ public TextureGallery() {
         this.nextId = 0;
     }
 
+    public void clear() {
+        this.ordinalMap.clear();
+        this.nextId = 0;
+    }
+
     public int get(@Nullable ResourcePath<Texture> textureResourcePath) {
         if (textureResourcePath == null) textureResourcePath = ResourcePack.MISSING_TEXTURE;
         Integer ordinal = ordinalMap.get(textureResourcePath);