21 May, 2021

Electron Notes

mkdir app01
cd app01
npm init -y
npm i --save-dev electron

Add main.js file:

const { app, BrowserWindow } = require('electron')
const path = require('path')

function createWindow () {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js')
    }
  })

  win.loadFile('index.html')
}

app.whenReady().then(() => {
  createWindow()

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow()
    }
  })
})

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

Add index.html file:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
</head>
<body style="background: white;">
    <h1>Hello World!</h1>
    <p>
        We are using Node.js <span id="node-version"></span>,
        Chromium <span id="chrome-version"></span>,
        and Electron <span id="electron-version"></span>.
    </p>
</body>
</html>

Add preload.js file:

window.addEventListener('DOMContentLoaded', () => {
  const replaceText = (selector, text) => {
    const element = document.getElementById(selector)
    if (element) element.innerText = text
  }

  for (const type of ['chrome', 'node', 'electron']) {
    replaceText(`${type}-version`, process.versions[type])
  }
})

Update package.json file and replace the author and description with a value.

Start with:

npm start

Add electron-forge CLI:

npm i -D @electron-forge/cli
npx electron-forge import

Build a redistributable package in out folder:

npm run make

todo package the files in a installation executable with maybe Inno Setup?