modern

base_project/lib/BuilderField/shared/utils/entity_field_store.dart

@@ -0,0 +1,37 @@
+import 'dart:typed_data';
+
+/// Temporary in-memory store for complex field data (e.g., uploads)
+/// Keyed by fieldKey. Values are dynamic but expected shapes are documented.
+class EntityFieldStore {
+  EntityFieldStore._();
+  static final EntityFieldStore instance = EntityFieldStore._();
+
+  final Map<String, dynamic> _data = {};
+
+  void set(String fieldKey, dynamic value) {
+    _data[fieldKey] = value;
+  }
+
+  T? get<T>(String fieldKey) {
+    final value = _data[fieldKey];
+    if (value is T) return value as T;
+    return null;
+  }
+
+  void remove(String fieldKey) {
+    _data.remove(fieldKey);
+  }
+
+  void clear() {
+    _data.clear();
+  }
+}
+
+/// Expected value shapes:
+/// - For multi-file uploads: List<UploadItem>
+class UploadItem {
+  final String fileName;
+  final Uint8List bytes;
+
+  UploadItem({required this.fileName, required this.bytes});
+}