state_helpers 0.1.1

Contains utility function and classes to help utilize state management more efficiently. 1. Creating and handling StatefulWidgets more elegantly. 2. Helpers for Bloc management system. 3. Helper scope [...]

Contains utility function and classes to help utilize state management more efficiently.

Features

1. Creating and handling StatefulWidgets more elegantly.
2. Helpers for Bloc management system.
3. Helper scope extensions function

Getting started

Install

flutter pub add state_helpers

Usage

An easier way to create stateful widgets in Flutter.

instead of writing with 2 classes:

import 'package:flutter/material.dart';  
  
class Counter extends StatefulWidget {  
  const Counter({super.key});  
  
  
  @override  
  State<StatefulWidget> createState() => _SimpleCounterState();  
}  
  
class _SimpleCounterState extends State<Counter> {  
  var count = 0;  
  
  @override  
  Widget build(BuildContext context) {  
    return Row(  
      children: [  
        TextButton(onPressed: () {  
          setState(() {  
            count--;  
          });  
        }, child: const Text('-')),  
        Text('value: $count'),  
        TextButton(  
            onPressed: () {  
              setState(() {  
                count++;  
              });  
            },  
            child: const Text('+')  
        )  
      ],  
    );  
  }  
}

use one class with a state mixin:

import 'package:flutter/material.dart';  
import 'package:state_helpers/state_helpers.dart';  
  
class SimpleCounter extends StatefulWidget with StateHolder<int> {  
  const SimpleCounter({super.key});  
  
  @override  
  int get initialState => 0;  
  
  @override  
  Widget build(BuildContext context, int state, StateEmitter<int> emitter) {  
    return Row(  
      children: [  
        TextButton(onPressed: () {  
          emitter(state - 1);  
        }, child: const Text('-')),  
        Text('value: $state'),  
        TextButton(  
            onPressed: () {  
             emitter(state + 1);  
            },  
            child: const Text('+')  
        )  
      ],  
    );  
  }  
}

Creating BlocBuilder and BlocSelector easier

avoid remembering multiple types when creating BlocSelector & BlocBuilder

import 'package:example/widgets/bloc/color_bloc.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class ColorPicker extends StatelessWidget {
  const ColorPicker({super.key});

  @override
  Widget build(BuildContext context) {
    return BlocSelector<ColorBloc, ColorData, String>(
        selector: (st) => st.name,
        builder: (context, snapshot) => Text(snapshot)
    );
  }
}

create a builders or selectors directly from the bloc instance:

import 'package:example/widgets/bloc/color_bloc.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class ColorPicker extends StatelessWidget {
  const ColorPicker({super.key});

  @override
  Widget build(BuildContext context) {
    return context.read<ColorBloc>().selector(
        selector: (st) => st.color,
        builder: (context, snapshot) =>
            Container(height: 64, color: snapshot,)
    );
  }
}