update form_m

MainAppDMT/lib/screens/Form/multi_form.dart

+import 'package:DMTI_app/screens/Form/user.dart';
+import 'package:DMTI_app/screens/product/products_screen.dart';
+import 'package:flutter/material.dart';
+
+import 'empty_state.dart';
+import 'form.dart';
+
+class MultiForm extends StatefulWidget {
+  @override
+  _MultiFormState createState() => _MultiFormState();
+}
+
+class _MultiFormState extends State<MultiForm> {
+  List<UserForm> users = [];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        elevation: .0,
+        leading: IconButton(
+          onPressed: () {
+            Navigator.of(context)
+                .push(MaterialPageRoute(builder: (c) => ProductsScreen()));
+          },
+          icon: Icon(
+            Icons.home,
+          ),
+        ),
+        title: Text('Patients Records'),
+        actions: <Widget>[
+          FlatButton(
+            child: Text('Save'),
+            textColor: Colors.white,
+            onPressed: onSave,
+          )
+        ],
+      ),
+      body: Container(
+        decoration: BoxDecoration(
+          gradient: LinearGradient(
+            colors: [
+              Color(0xFF30C1FF),
+              Color(0xFF2AA7DC),
+            ],
+            begin: Alignment.topCenter,
+            end: Alignment.bottomCenter,
+          ),
+        ),
+        child: users.length <= 0
+            ? Center(
+                child: EmptyState(
+                  title: 'No Records',
+                  message: 'Add form by tapping add button below',
+                ),
+              )
+            : ListView.builder(
+                addAutomaticKeepAlives: true,
+                itemCount: users.length,
+                itemBuilder: (_, i) => users[i],
+              ),
+      ),
+      floatingActionButton: FloatingActionButton(
+        child: Icon(Icons.add),
+        onPressed: onAddForm,
+        foregroundColor: Colors.white,
+      ),
+    );
+  }
+
+  ///on form user deleted
+  void onDelete(User _user) {
+    setState(() {
+      var find = users.firstWhere(
+        (it) => it.user == _user,
+        orElse: () => null,
+      );
+      if (find != null) users.removeAt(users.indexOf(find));
+    });
+  }
+
+  ///on add form
+  void onAddForm() {
+    setState(() {
+      var _user = User();
+      users.add(UserForm(
+        user: _user,
+        onDelete: () => onDelete(_user),
+      ));
+    });
+  }
+
+  ///on save forms
+  void onSave() {
+    if (users.length > 0) {
+      var allValid = true;
+      users.forEach((form) => allValid = allValid && form.isValid());
+      if (allValid) {
+        var data = users.map((it) => it.user).toList();
+        Navigator.push(
+          context,
+          MaterialPageRoute(
+            fullscreenDialog: true,
+            builder: (_) => Scaffold(
+              appBar: AppBar(
+                title: Text('List of Users'),
+              ),
+              body: ListView.builder(
+                itemCount: data.length,
+                itemBuilder: (_, i) => ListTile(
+                  leading: CircleAvatar(
+                    child: Text(data[i].fullName.substring(0, 1)),
+                  ),
+                  title: Text(data[i].fullName),
+                  subtitle: Text(
+                    data[i].mentalage,
+                  ),
+                ),
+              ),
+            ),
+          ),
+        );
+      }
+    }
+  }
+}