password_rule_check 0.0.1+1

A Flutter Widget to display and check password rules

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:password_rule_check/password_rule_check.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: ExamplePage(),
    );
  }
}

class ExamplePage extends StatefulWidget {
  ExamplePage({
    Key? key,
  }) : super(key: key);

  @override
  _ExamplePageState createState() => _ExamplePageState();
}

class _ExamplePageState extends State<ExamplePage> {
  TextEditingController _controller = TextEditingController();
  GlobalKey<PasswordRuleCheckState> _ruleCheckKey = GlobalKey();
  GlobalKey<FormState> _formKey = GlobalKey();

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    _controller.dispose();
    _controller = TextEditingController();
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Form(
        key: _formKey,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          mainAxisSize: MainAxisSize.max,
          children: [
            TextFormField(
              controller: _controller,
              decoration: InputDecoration(hintText: 'Enter Password'),
              validator: (_) {
                if (_ruleCheckKey.currentState?.validate() == false) {
                  return 'Password does not meet standard';
                }
              },
            ),
            SizedBox(
              height: 8,
            ),
            PasswordRuleCheck(
              key: _ruleCheckKey,
              controller: _controller,
              ruleSet: PasswordRuleSet(
                  minLength: 6, uppercase: 1, specialCharacters: 1, digits: 2),
              textStyle: Theme.of(context).textTheme.headline6,
              showIcon: true,
            ),
            SizedBox(
              height: 8,
            ),
            ElevatedButton(
              onPressed: () {
                _formKey.currentState?.validate();
              },
              child: Text('Validate Password'),
            ),
          ],
        ),
      ),
    );
  }
}