mvp-di

A simple DI package inspired by the MVP pattern. It can inject the presentation layer in React.js/React Native applications.

Installation

Run yarn add mvp-di

Usage

• implement PresenterMap

import {PresenterMap} from "mvp-di";
 
export enum ComponentEnum {
  HOME = 'Home',
  SETTINGS = 'Settings'
}
 
export default new PresenterMap<ComponentEnum>()
  .set(ComponentEnum.HOME, HomePresenter)
  .set(ComponentEnum.SETTINGS, SettingsPresenter);
 

• call DIBuilder.build(PresenterMap) in your root component

• implement view interface:

import {MvpView} from "mvp-di";
 
interface HomeView extends MvpView {
  showMessage: Function
}

• implement presenter:

import {bind, Presenter} from 'mvp-di';
 
class HomePresenter extends Presenter<HomeView>{
 
  @bind
  public handleOnPress() {
    this.view.showMessage();
  }
}

• implement component and use @inject decorator to inject dependency:

import {inject, bind, viewProperty} from 'mvp-di';
 
class Home extends React.Component<{}, {}> implements HomeView {
 
  @inject 
  private presenter!: HomePresenter;
  
  public getClassName(): string {
    return ComponentEnum.HOME;
  }
 
  @bind
  @viewProperty
  public showMessage(): void {
    Alert.alert('Message', 'Hello');
  }
 
  render() {
    return (
      <View>
        <Button title={'Say Hello'} onPress={this.presenter.handleOnPress} />
      </View>
    )
  }
}
 

@inject decorator instantiate HomePresenter.ts object and append it to Home.tsx object automatically.

@viewProperty decorator marks property as Injectable and provides access it for HomePresenter.ts

@bind decorator is also available

Important

The Presenter <T> extension provides the ability to communicate with View methods. And this is a must. Presenter <T> provides a view property that gives access to the View methods.

All of your view interfaces must extends the MvpView. It will oblige your views to implement getClassName method.

getClassName have to return string that exactly like in DITypes enum