flutter_fast_forms 0.6.0

Enhances Flutter SDK with framework-compliant form fields and a lightweight meta form widget layer to speed up form development

example/lib/main.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_fast_forms/flutter_fast_forms.dart';

import 'custom_form_field.dart';

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

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Fast Forms Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: FormPage(
        title: 'Flutter Fast Forms Example',
      ),
    );
  }
}

class FormPage extends StatelessWidget {
  FormPage({Key key, this.title}) : super(key: key);

  final GlobalKey<FormState> formKey = GlobalKey<FormState>();
  final String title;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(title),
      ),
      body: SafeArea(
        child: SingleChildScrollView(
          child: Column(
            children: [
              FastForm(
                formKey: formKey,
                children: _buildFormModel(context),
                onChanged: (value) =>
                    print('Form changed: ${value.toString()}'),
              ),
              RaisedButton(
                child: Text('Reset'),
                onPressed: () => formKey.currentState.reset(),
              )
            ],
          ),
        ),
      ),
    );
  }

  List<Widget> _buildFormModel(BuildContext context) {
    return [
      FastFormSection(
        title: Padding(
          padding: const EdgeInsets.all(12.0),
          child: Text(
            'Form Example Section',
            style: TextStyle(
              fontSize: 20,
              fontWeight: FontWeight.w500,
            ),
          ),
        ),
        children: [
          FastDatePicker(
            id: 'date_picker',
            label: 'Date Picker',
            firstDate: DateTime(1970),
            lastDate: DateTime(2040),
          ),
          FastDateRangePicker(
            id: 'date_range_picker',
            label: 'Date Range Picker',
            firstDate: DateTime(1970),
            lastDate: DateTime(2040),
          ),
          FastTimePicker(
            id: 'time_picker',
            label: 'Time Picker',
          ),
          FastSwitch(
            id: 'switch',
            label: 'Switch',
            title: 'This is a switch',
            contentPadding: const EdgeInsets.fromLTRB(8.0, 0, 0, 0),
          ),
          FastTextField(
            id: 'text_field',
            label: 'Text Field',
            hint: 'MM/JJJJ',
            keyboardType: TextInputType.datetime,
            maxLength: 7,
            prefix: Icon(Icons.calendar_today),
            buildCounter: inputCounterWidgetBuilder,
            inputFormatters: [InputFormatters.maskText('##/####')],
            validator: Validators.compose([
              Validators.required((_value) => 'Field is required'),
              Validators.minLength(
                  7,
                  (_value, minLength) =>
                      'Field must contain at least $minLength characters'),
            ]),
          ),
          FastDropdown(
            id: 'dropdown',
            label: 'Dropdown Field',
            items: [
              'Norway',
              'Sweden',
              'Finland',
              'Denmark',
              'Iceland',
            ],
            initialValue: 'Finland',
          ),
          FastRadioGroup(
            id: 'radio_group',
            label: 'Radio Group Model',
            options: [
              RadioOption(
                title: 'Option 1',
                value: 'option-1',
              ),
              RadioOption(
                title: 'Option 2',
                value: 'option-2',
              ),
              RadioOption(
                title: 'Option 3',
                value: 'option-3',
              )
            ],
          ),
          FastSlider(
            id: 'slider',
            label: 'Slider',
            helper: 'A Slider with prefix and suffix widgets',
            min: 0,
            max: 10,
            prefixBuilder: (state) {
              final enabled = state.widget.enabled;
              return IconButton(
                icon: Icon(Icons.volume_off),
                onPressed:
                    enabled ? () => state.didChange(state.widget.min) : null,
              );
            },
            suffixBuilder: (state) {
              final enabled = state.widget.enabled;
              return IconButton(
                icon: Icon(Icons.volume_up),
                onPressed:
                    enabled ? () => state.didChange(state.widget.max) : null,
              );
            },
            validator: (value) => value > 8 ? 'Volume is too high' : null,
          ),
          FastRangeSlider(
            id: 'range_slider',
            label: 'Range Slider',
            min: 0,
            max: 10,
            divisions: 10,
            labelsBuilder: rangeSliderLabelsBuilder,
            prefixBuilder: rangeSliderPrefixBuilder,
            suffixBuilder: rangeSliderSuffixBuilder,
          ),
          FastCustomField(
            id: 'custom_form_field',
            label: 'Custom Form Field',
            helper: "Optionally add some extras",
            title: Text('Extras'),
            options: [
              CustomOption(
                id: 'cheese',
                label: 'Cheese',
              ),
              CustomOption(
                id: 'bacon',
                label: 'Bacon',
              ),
            ],
          ),
          FastCalendar(
            id: 'calendar',
            label: 'Calendar',
            firstDate: DateTime(1970),
            lastDate: DateTime(2040),
          ),
          FastCheckbox(
            id: 'checkbox',
            label: 'Checkbox',
            title: 'I accept',
            contentPadding: const EdgeInsets.fromLTRB(12.0, 0, 0, 0),
          ),
        ],
      ),
    ];
  }
}