Smart layers drag n drop

src/main/java/games/rednblack/editor/controller/BootstrapCommand.java

@@ -53,6 +53,7 @@ public class BootstrapCommand extends SimpleCommand {
         facade.registerCommand(MsgAPI.ACTION_DELETE_LAYER, DeleteLayerCommand::new);
         facade.registerCommand(MsgAPI.ACTION_NEW_LAYER, NewLayerCommand::new);
         facade.registerCommand(MsgAPI.ACTION_SWAP_LAYERS, LayerSwapCommand::new);
+        facade.registerCommand(MsgAPI.ACTION_JUMP_LAYERS, LayerJumpCommand::new);
         facade.registerCommand(MsgAPI.ACTION_RENAME_LAYER, RenameLayerCommand::new);
 
         facade.registerCommand(MsgAPI.ACTION_ADD_COMPONENT, AddComponentToItemCommand::new);

src/main/java/games/rednblack/editor/controller/commands/LayerJumpCommand.java

@@ -0,0 +1,46 @@
+package games.rednblack.editor.controller.commands;
+
+import games.rednblack.editor.renderer.components.LayerMapComponent;
+import games.rednblack.editor.utils.runtime.EntityUtils;
+import games.rednblack.editor.utils.runtime.SandboxComponentRetriever;
+import games.rednblack.editor.view.stage.Sandbox;
+
+public class LayerJumpCommand extends EntityModifyRevertibleCommand {
+    private static final String CLASS_NAME = "games.rednblack.editor.controller.commands.LayerJumpCommand";
+    public static final String DONE = CLASS_NAME + "DONE";
+
+    private Integer entityId;
+
+    private String sourceName;
+    private String targetName;
+
+    private void backup() {
+        if(entityId == null) {
+            Object[] payload = getNotification().getBody();
+            sourceName = (String) payload[0];
+            targetName = (String) payload[1];
+            entityId = EntityUtils.getEntityId(Sandbox.getInstance().getCurrentViewingEntity());
+        }
+    }
+
+    @Override
+    public void doAction() {
+        backup();
+
+        int viewingEntity = EntityUtils.getByUniqueId(entityId);
+        LayerMapComponent layerMapComponent = SandboxComponentRetriever.get(viewingEntity, LayerMapComponent.class);
+        targetName = layerMapComponent.jump(sourceName, targetName);
+
+        facade.sendNotification(DONE);
+
+    }
+
+    @Override
+    public void undoAction() {
+        int viewingEntity = EntityUtils.getByUniqueId(entityId);
+        LayerMapComponent layerMapComponent = SandboxComponentRetriever.get(viewingEntity, LayerMapComponent.class);
+        layerMapComponent.jump(sourceName, targetName);
+
+        facade.sendNotification(DONE);
+    }
+}

src/main/java/games/rednblack/editor/view/ui/box/UILayerBoxMediator.java

@@ -74,7 +74,7 @@ public class UILayerBoxMediator extends PanelMediator<UILayerBox> {
                 DeleteLayerCommand.DONE,
                 DeleteLayerCommand.UNDONE,
                 NewLayerCommand.DONE,
-                LayerSwapCommand.DONE,
+                LayerJumpCommand.DONE,
                 RenameLayerCommand.DONE
 
 
@@ -136,9 +136,9 @@ public class UILayerBoxMediator extends PanelMediator<UILayerBox> {
                 });
                 break;
             case UILayerBox.LAYER_DROPPED:
-                facade.sendNotification(MsgAPI.ACTION_SWAP_LAYERS, notification.getBody());
+                facade.sendNotification(MsgAPI.ACTION_JUMP_LAYERS, notification.getBody());
                 break;
-            case LayerSwapCommand.DONE:
+            case LayerJumpCommand.DONE:
                 int index = viewComponent.getCurrentSelectedLayerIndex();
                 initLayerData();
                 viewComponent.setCurrentSelectedLayer(index);