zadart_flutter

Flutter companion to the zadart package — general-purpose widgets, extensions, and utilities for building Flutter apps.

Getting started

dependencies:
  zadart_flutter: ^0.1.0

import 'package:zadart_flutter/zadart_flutter.dart';

What's inside

Widget & State extensions

// Wrap a widget — or a whole list of them — in Expanded.
myWidget.expandWrapped();
[a, b, c].expandWrapped(); // List<Expanded>

// Inside a State:
refreshState();               // setState with no changes, to force a rebuild
setStateMounted(() => ...);   // setState only if the State is still mounted

Snackbars

showSnackbar(context, 'Saved!'); // hides the current snackbar first by default

Date/time extensions

final range = DateTimeRange(start: start, end: end);
range.days;              // lazily-iterated days spanned by the range
range.months;            // first-of-month for each month spanned
range.contains(dt);      // inclusive containment

final dt = DateTime.now();
dt.isToday();
dt.clamp(after: earliest, before: latest);
dt.withTime(const TimeOfDay(hour: 9, minute: 0));

flutter_form_builder helpers

final formKey = GlobalKey<FormBuilderState>();

formKey.isValid;
formKey.saved;                 // the saved values map
formKey.get<String>('email');  // typed field access
formKey.saveAndValidate();
validateFormFields(formKey, ['email', 'name']);

FormBuilderStepperForm wires up a multi-step form with Back/Next/Submit buttons and per-step validation:

FormBuilderStepperForm(
  stepCount: 2,
  stepBuilder: (step, values) => StepData(
    title: 'Step ${step + 1}',
    subtitle: '...',
    fieldNames: const ['email'],
    child: FormBuilderTextField(name: 'email'),
  ),
  onSubmit: (values) => print(values),
);

bloc helpers

// Build `buildWhen`/`listenWhen`-style change predicates.
selectedStateHasChanged<MyState, int>((s) => s.count);

Additional information

Built on top of zadart. Issues and contributions are welcome at https://github.com/anqit/zadart_flutter.