Improve LayerMapComponent performances

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

@@ -1,5 +1,6 @@
 package games.rednblack.editor.controller.commands;
 
+import com.kotcrab.vis.ui.util.dialog.Dialogs;
 import games.rednblack.editor.renderer.components.LayerMapComponent;
 import games.rednblack.editor.renderer.data.LayerItemVO;
 import games.rednblack.editor.utils.runtime.SandboxComponentRetriever;
@@ -20,9 +21,20 @@ public class NewLayerCommand extends EntityModifyRevertibleCommand {
         int index = (int) payload[0];
         layerName = (String) payload[1];
 
+        if (layerName.isEmpty()) {
+            cancel();
+            return;
+        }
+
         int viewingEntity = Sandbox.getInstance().getCurrentViewingEntity();
         LayerMapComponent layerMapComponent = SandboxComponentRetriever.get(viewingEntity, LayerMapComponent.class);
 
+        if (layerMapComponent.getLayer(layerName) != null) {
+            cancel();
+            Dialogs.showErrorDialog(Sandbox.getInstance().getUIStage(), "Layer name already exists.").padBottom(20).pack();
+            return;
+        }
+
         LayerItemVO vo = new LayerItemVO(layerName);
         vo.isVisible = true;
         layerMapComponent.addLayer(index, vo);

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

@@ -37,7 +37,9 @@ public class RenameLayerCommand extends EntityModifyRevertibleCommand {
         String oldName = payload[0];
         String newName = payload[1];
 
-        if(oldName.equals(newName)) cancel();
+        if(oldName.equals(newName) || newName.isEmpty()) {
+            cancel();
+        }
 
         renameLayer(oldName, newName);
 
@@ -56,6 +58,8 @@ public class RenameLayerCommand extends EntityModifyRevertibleCommand {
     }
 
     private void renameLayer(String fromName, String toName) {
+        if (isCancelled) return;
+
         int viewEntity = Sandbox.getInstance().getCurrentViewingEntity();
         NodeComponent nodeComponent = SandboxComponentRetriever.get(viewEntity, NodeComponent.class);
         LayerMapComponent layerMapComponent = SandboxComponentRetriever.get(viewEntity, LayerMapComponent.class);