Material grabber functional

Construct [BP]/scripts/classes/Materials/MaterialsFormBuilder.js

@@ -1,12 +1,22 @@
+import { ActionFormData } from "@minecraft/server-ui";
 import { MenuFormBuilder } from "../MenuFormBuilder";
+import { structureCollection } from "../Structure/StructureCollection";
+import { Builders } from "../Builder/Builders";
 
-export class InstanceFormBuilder {
-    menuTitle = MenuFormBuilder.menuTitle + ' Material Grabber';
+export class MaterialsFormBuilder {
+    static menuTitle = MenuFormBuilder.menuTitle + ' Material Grabber';
 
-    static buildInstanceSelector() {
+    static buildInstanceSelector(player) {
         const allInstanceNameForm = new ActionFormData()
-            .title(this.menuTitle)
-            .body('Select an instance:');
+            .title(this.menuTitle);
+        const currInstanceName = Builders.get(player.id).materialInstanceName;
+        let body = '§7Current instance: ';
+        if (currInstanceName)
+            body += `§2${currInstanceName}`;
+        else
+            body += '§7None';
+        body += '\n§7Select an instance:';
+        allInstanceNameForm.body(body);
         structureCollection.getInstanceNames().forEach(instanceName => {
             allInstanceNameForm.button(`§2${instanceName}`);
         });