Form template selector generated from db

lib/add_form.dart

@@ -1,15 +1,50 @@
 import 'package:flutter/material.dart';
 import 'data_util.dart' as data;
+import 'db_helper.dart';
 
-class AddForm extends StatelessWidget {
-  AddForm({Key? key, required this.type}) : super(key: key);
+class AddForm extends StatefulWidget {
+  const AddForm({Key? key, required this.type}) : super(key: key);
+  final data.Page type;
+
+  @override
+  State<StatefulWidget> createState() => _AddFormState(type);
+}
+
+class _AddFormState extends State<AddForm> {
+  _AddFormState(this.type);
   final _formKey = GlobalKey<FormState>();
 
   final data.Page type;
   int _templatChoice = -1;
+  List<data.List> templates = [];
 
   final FocusNode _TemplateFocusNode = FocusNode();
 
+  void loadTemplates() async {
+    var rows = await DBHelper.dbHelper.getAllLists(data.Page.templates);
+    setState(() {
+      templates.clear();
+      for (var row in rows) {
+        var template = data.List.fromMap(row);
+        templates.add(template);
+      }
+    });
+  }
+
+  List<DropdownMenuItem<int>> generateDropdown() {
+    loadTemplates();
+    List<DropdownMenuItem<int>> items = [
+      DropdownMenuItem<int>(child: Text("None"), value: -1)
+    ];
+    templates.asMap().forEach((index, value) {
+      items.add(DropdownMenuItem<int>(
+        child: Text(value.name),
+        value: index,
+      ));
+    });
+    return items;
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -34,21 +69,17 @@ class AddForm extends StatelessWidget {
                     FocusScope.of(context).requestFocus(_TemplateFocusNode);
                   },
                   decoration: const InputDecoration(labelText: 'Label')),
-              DropdownButtonFormField(
+              DropdownButtonFormField<int>(
                 focusNode: _TemplateFocusNode,
                 value: _templatChoice,
                 onChanged: (value) {
                   setState() {
-                    _templatChoice = value as int;
+                    _templatChoice = (value != null) ? value : -1;
                   }
                 },
                 decoration:
                     const InputDecoration(labelText: "Starting Template"),
-                items: const [
-                  // TODO get templates from database
-                  DropdownMenuItem<int>(child: Text("None"), value: -1),
-                  DropdownMenuItem<int>(child: Text("1"), value: 0),
-                ],
+                items: generateDropdown(),
               )
             ],
           ),