About

Simply provides a pool and wrapper to manage the promises that generate loading status and percentage information based on the execution of tasks.

Demo

Installation

Install loadio as a dependency

# Yarn
$ yarn add loadio

# NPM
$ npm install loadio

Usage

import React from "react";
import { withPool } from "loadio"; 
const fetch = withPool(global.fetch);

class HomePage extends React.Component {

  render(){
    const { isLoading } = this.props;  
    return (
      <>
        {isLoading ? "Loading..." : "Loaded!"}
        <button onClick={() => fetch("get/data")}>Get</button>
      </>
    );
  }
}
export default withStatus(HomePage);

Hook

import { withPool, useStatus } from "loadio"; 
const fetch = withPool(global.fetch);

function HomePage() {
  const status = useStatus();
  return (
    <>
      {status.isLoading ? "Loading..." : "Loaded!"}
      <button onClick={() => fetch("get/data")}>Get</button>
    </>
  );
}

Promises can also be added directly to the pool without wrapping it

import { PoolManager, useStatus } from "loadio"; 

function HomePage() {
  const status = useStatus();
  return (
    <>
      {status.isLoading ? "Loading..." : "Loaded!"}
      <button onClick={() => PoolManager.append(fetch("get/data"))}>Get</button>
    </>
  );
}

Example

For this example, loading component will automatically appear when wrapped fetch function called Wrap the function you want to show while running

fetch.js

import { withPool } from "loadio"; 
export const fetch = withPool(global.fetch); 

Wrap the main component with 'withStatus()' to inject pool information. The information to be added to the component is as follows:

{
    // default
    isLoading?: boolean,
    percentage?: number,
    runningTasks?: number,
    // This property will only be filled to when using a different pool than 'default'
    // Pool keys must be given while wrapping otherwise this value is empty
    statusList?: any[] {
        [customPoolKey:string]:{
            isLoading?: boolean,
            percentage?: number,
            runningTasks?: number
        },
        ...
    }
}

index.js

import { withStatus } from "loadio";

class Main extends React.Component {
  render() {
    const { isLoading, percentage } = this.props;
    return (
      <>
        <MyLoadingComponent open={isLoading} percentage={percentage} />
        <ExamplePage />
      </>
    );
  }
}
export default withStatus(Main);

ExamplePage.jsx

Call the wrapped promise anywhere to show loading screen When run multiple times at the same time, it will also create a percentage rate until all promises are finished.

import { fetch } from "./fetch.js";

getData = () => {
  fetch("http://example.com/movies.json");
};
 

Or

const fetch = withPool(global.fetch);

getData = () => {
  fetch("http://example.com/movies.json");
};
 

Or it can be created multiple times dynamically.

getData = () => {
  withPool(global.fetch)("http://example.com/movies.json");
}; 

Multiple usage

The withPool wrapper can be created with a different key and can be used in different screens. Second parameter value is 'default' by default.

fetch.js

import { withPool } from "loadio";
export const fetch = withPool(global.fetch, "fetch"); 

longRunningTask.js

import { withPool } from "loadio";

function myLongRunningTask() {
  return new Promise((resolve) => setTimeout(resolve, 10000));
}
export const longRunningTask = withPool(myLongRunningTask, "longRunningTask"); 

index.js

The root loading props(isLoading, percentage, runningTasks) come null when using multiple pool keys except for the 'statusList' prop. Both pools can be connected to a single page or can be used individually.

import { withStatus } from "loadio";

class Main extends React.Component {
  render() {
    const { isLoading, percentage, statusList } = this.props;
    var fetchStatus = statusList["fetch"] ?? {};
    var lrtStatus = statusList["longRunningTask"] ?? {};
    return (
      <>
        <MyLoadingComponent
          open={fetchStatus.isLoading}
          percentage={fetchStatus.percentage}
        />
        <MyLoadingComponent
          open={lrtStatus.isLoading}
          percentage={lrtStatus.percentage}
        />
        <ExamplePage />
      </>
    );
  }
}
export default withStatus(Main, {
  poolKey: ["longRunningTask", "fetch"],
});

Or bind only one pool 'longRunningTask' instead of 'default'. Thus, instead of coming statuses as the list, the bound pool status comes from the props in the root directly.

import { withStatus } from "loadio";

class Main extends React.Component {
  render() {
    const { isLoading, percentage, statusList } = this.props;
    return (
      <>
        <MyLoadingComponent
          open={isLoading}
          percentage={percentage}
        />
        <ExamplePage />
      </>
    );
  }
}
export default withStatus(Main, {
  poolKey: "longRunningTask",
});

API

Check here for the API document

License

MIT - Mustafa Kuru