jitsi-meet-electron/windows/jitsi-meet/render.js

const remoteControl = require("../../modules/remotecontrol");
let postis = require("postis");
const setupScreenSharingForWindow = require("../../modules/screensharing");
const config = require("../../config.js");
const {dialog} = require('electron').remote;

/**
 * The postis channel.
 */
let channel;

/**
 * Cteates the iframe that will load Jitsi Meet.
 */
let iframe = document.createElement('iframe');
iframe.src = config.jitsiMeetURL;
iframe.allowFullscreen = true;
iframe.onload = onload;
document.body.appendChild(iframe);

/**
 * Factory for dialogs.
 */
class DialogFactory {
    /**
     * Creates new instance
     * @constructor
     */
    constructor() { }

    /**
     * Shows message box dialog for request for remote control permissions
     * @param {object} userInfo - information about the user that has sent the
     * request:
     * @param {string} userInfo.displayName - display name
     * @param {string} userInfo.userJID - the JID of the user.
     */
    requestRemoteControlPermissions(userInfo) {
        return new Promise( resolve =>
            dialog.showMessageBox({
                type: "question",
                buttons: ["Yes", "No"],
                defaultId: 0,
                title: "Request for permission for remote control",
                message: "Would you like to allow " + userInfo.displayName
                + " to remotely control your desktop.",
                detail: "userId: " + userInfo.userJID,
                cancelId: 1
            }, response => resolve(response === 0? true : false))
        );
    }
}

/**
 * Dialog factory instance.
 */
const dialogFactory = new DialogFactory();

/**
 * Boolean variable that indicates whether the onloaded function was already
 * called.
 * NOTE: Used to not call the onload method more than once during reloads of
 * the iframe or location changes.
 */
let loaded = false;

/**
 * Handles loaded event for iframe:
 * Enables screen sharing functionality to the iframe webpage.
 * Initializes postis.
 * Initializes remote control.
 */
function onload() {
    if(loaded) {
        return;
    }
    loaded = true;
    setupScreenSharingForWindow(iframe.contentWindow);
    channel = postis({
        window: iframe.contentWindow,
        windowForEventListening: window
    });
    remoteControl.init(channel, dialogFactory);
}