nornagon/index.html Secret

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Tracing Test</title>
  </head>
  <body>
    <button id="do_work">do work</button>
    <button id="record">start recording</button>

    <script>
      require('./renderer.js')
    </script>
  </body>
</html>

## main.js
// Modules to control application life and create native browser window
const {app, BrowserWindow, ipcMain, contentTracing, shell} = require('electron')
const path = require('path')

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow

ipcMain.on('do-work', (e) => {
  const start = +new Date
  while (new Date < start + 1000) {
    // do nothing
  }
  e.reply('work-done')
})

ipcMain.on('start-recording', (e) => {
  contentTracing.startRecording({
    included_categories: [
      '*',
      'disabled-by-default-devtools.timeline',
      'disabled-by-default-devtools.timeline.frame',
      'disabled-by-default-v8.cpu_profiler',
      'disabled-by-default-v8.cpu_profiler.hires',
      'disabled-by-default-devtools.timeline.stack',
    ],
    excluded_categories: [],
  })
})

ipcMain.on('stop-recording', async (e) => {
  const tracePath = await contentTracing.stopRecording(path.join(__dirname, 'trace.json'))
  shell.openItem(__dirname)
})

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true
    }
  })

  // and load the index.html of the app.
  mainWindow.loadFile('index.html')

  // Open the DevTools.
  // mainWindow.webContents.openDevTools()

  // Emitted when the window is closed.
  mainWindow.on('closed', function () {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    mainWindow = null
  })
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {
  // On OS X it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (mainWindow === null) {
    createWindow()
  }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

## renderer.js
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// All of the Node.js APIs are available in this process.

const {webFrame, ipcRenderer} = require('electron')

do_work.addEventListener('click', e => {
  e.target.disabled = true
  ipcRenderer.send('do-work')
  e.target.textContent = 'doing work in main process...'
})
ipcRenderer.on('work-done', () => {
  do_work.disabled = false
  do_work.textContent = 'do work'
})

let recording = false
record.addEventListener('click', e => {
  if (recording) {
    ipcRenderer.send('stop-recording')
    e.target.textContent = 'start recording'
    recording = false
  } else {
    ipcRenderer.send('start-recording')
    e.target.textContent = 'stop recording'
    recording = true
  }
})
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Tracing Test</title>
	</head>
	<body>
	<button id="do_work">do work</button>
	<button id="record">start recording</button>

	<script>
	require('./renderer.js')
	</script>
	</body>
	</html>
	// Modules to control application life and create native browser window
	const {app, BrowserWindow, ipcMain, contentTracing, shell} = require('electron')
	const path = require('path')

	// Keep a global reference of the window object, if you don't, the window will
	// be closed automatically when the JavaScript object is garbage collected.
	let mainWindow

	ipcMain.on('do-work', (e) => {
	const start = +new Date
	while (new Date < start + 1000) {
	// do nothing
	}
	e.reply('work-done')
	})

	ipcMain.on('start-recording', (e) => {
	contentTracing.startRecording({
	included_categories: [
	'*',
	'disabled-by-default-devtools.timeline',
	'disabled-by-default-devtools.timeline.frame',
	'disabled-by-default-v8.cpu_profiler',
	'disabled-by-default-v8.cpu_profiler.hires',
	'disabled-by-default-devtools.timeline.stack',
	],
	excluded_categories: [],
	})
	})

	ipcMain.on('stop-recording', async (e) => {
	const tracePath = await contentTracing.stopRecording(path.join(__dirname, 'trace.json'))
	shell.openItem(__dirname)
	})

	function createWindow () {
	// Create the browser window.
	mainWindow = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	nodeIntegration: true
	}
	})

	// and load the index.html of the app.
	mainWindow.loadFile('index.html')

	// Open the DevTools.
	// mainWindow.webContents.openDevTools()

	// Emitted when the window is closed.
	mainWindow.on('closed', function () {
	// Dereference the window object, usually you would store windows
	// in an array if your app supports multi windows, this is the time
	// when you should delete the corresponding element.
	mainWindow = null
	})
	}

	// This method will be called when Electron has finished
	// initialization and is ready to create browser windows.
	// Some APIs can only be used after this event occurs.
	app.on('ready', createWindow)

	// Quit when all windows are closed.
	app.on('window-all-closed', function () {
	// On OS X it is common for applications and their menu bar
	// to stay active until the user quits explicitly with Cmd + Q
	if (process.platform !== 'darwin') {
	app.quit()
	}
	})

	app.on('activate', function () {
	// On OS X it's common to re-create a window in the app when the
	// dock icon is clicked and there are no other windows open.
	if (mainWindow === null) {
	createWindow()
	}
	})

	// In this file you can include the rest of your app's specific main process
	// code. You can also put them in separate files and require them here.
	// This file is required by the index.html file and will
	// be executed in the renderer process for that window.
	// All of the Node.js APIs are available in this process.

	const {webFrame, ipcRenderer} = require('electron')

	do_work.addEventListener('click', e => {
	e.target.disabled = true
	ipcRenderer.send('do-work')
	e.target.textContent = 'doing work in main process...'
	})
	ipcRenderer.on('work-done', () => {
	do_work.disabled = false
	do_work.textContent = 'do work'
	})

	let recording = false
	record.addEventListener('click', e => {
	if (recording) {
	ipcRenderer.send('stop-recording')
	e.target.textContent = 'start recording'
	recording = false
	} else {
	ipcRenderer.send('start-recording')
	e.target.textContent = 'stop recording'
	recording = true
	}
	})