如何从 Electron 中的主进程访问 BrowserWindow JavaScript 全局？

Question

I want a menu, defined in the main process to call JavaScript code inside the current browser window in an Atom or Electron application.

Getting main process globals from the browser window is

const remote = require('remote')
const foo    = remote.getGlobal('foo')

What is the equivalent for the main process (AKA get the current window globals)? This is what I want to do in pseudocode

// JavaScript inside the main process
const BrowserWindow = require('browser-window')
//...
// Inside the menu callback
let window    = BrowserWindow.getFocusedWindow()
let commander = window.global('commander') /// <---- Pseudocode!!!
commander.handleCommand('File.Save')

Answer 1

Here is a reference to your comment about the webContents process in the api, in the "Note:" under remotes.

However, if you just want to trigger a function, you could also use the webContents.send() and ipc(main process) processes to trigger the appropriate code to run. Something like this...

// JS inside main process
const window = require('electron').BrowserWindow;

ipc.on('menuItem-selected', function(){
    let focusedWindow    = window.getFocusedWindow();
    focusedWindow.webContents.send('file-save');
});

// Inside the menu callback
require('ipc').on('file-save', function() {
  // File save function call here
});

Update:

For Electron version 0.35.0 and above, the ipc api changed to the following:

// In main process.
const ipcMain = require('electron').ipcMain;

// In renderer process (web page).
const ipcRenderer = require('electron').ipcRenderer;

Answer 2

For electron version 11.xx you can do this

// In renderer process

const { ipcRenderer } = window.require("electron");

ipcRenderer.on("your-event-here", () => {

    //hand your event here 
    
});


//In the main process

import { ipcMain } from "electron";

ipcMain.handle("handle-event-here", async (event, data) => {

  // write custom code here

});