electron-node-red/main.js

'use strict';

const electron = require('electron');
// Module to control application life.
const app = electron.app;
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow;
// Start directly on the ui page
const url = "http://localhost:8000/ui";

const {Menu, MenuItem} = electron;

var http = require('http');
var express = require("express");
var RED = require("node-red");

// Create an Express app
var red_app = express();

// Add a simple route for static content served from 'public'
//red_app.use("/",express.static("public"));

// Create a server
var server = http.createServer(red_app);

// Create the settings object - see default settings.js file for other options
var settings = {
    verbose: true,
    httpAdminRoot:"/admin",
    httpNodeRoot: "/",
    userDir: __dirname,
    flowFile: "flows.json",
    functionGlobalContext: { }    // enables global context
};

// Initialise the runtime with a server and settings
RED.init(server,settings);

// Serve the editor UI from /red
red_app.use(settings.httpAdminRoot,RED.httpAdmin);

// Serve the http nodes UI from /api
red_app.use(settings.httpNodeRoot,RED.httpNode);

server.listen(8000);

// Start the runtime
RED.start();

// Create the Application's main menu
var template = [{
    label: "Application",
    submenu: [
        { label: "About Application", selector: "orderFrontStandardAboutPanel:" },
        { type: "separator" },
        { label: "Quit", accelerator: "Command+Q", click: function() { app.quit(); }}
    ]}, {
    label: "Edit",
    submenu: [
        { label: "Undo", accelerator: "CmdOrCtrl+Z", selector: "undo:" },
        { label: "Redo", accelerator: "Shift+CmdOrCtrl+Z", selector: "redo:" },
        { type: "separator" },
        { label: "Cut", accelerator: "CmdOrCtrl+X", selector: "cut:" },
        { label: "Copy", accelerator: "CmdOrCtrl+C", selector: "copy:" },
        { label: "Paste", accelerator: "CmdOrCtrl+V", selector: "paste:" },
        { label: "Select All", accelerator: "CmdOrCtrl+A", selector: "selectAll:" }
    ]}
];

// 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;

function createWindow () {
    // Create the browser window.
    mainWindow = new BrowserWindow({
        autoHideMenuBar: true,
        webPreferences: {
            nodeIntegration: false
        },
        title: "Node-RED",
        fullscreenable: true,
        //titleBarStyle: "hidden",
        width: 1024,
        height: 768,
        icon: __dirname + "/nodered.png"
    });

    var webContents = mainWindow.webContents;
    webContents.on('did-get-response-details', function(event, status, newURL, originalURL, httpResponseCode) {
        if ((httpResponseCode == 404) && (newURL == url)) {
            setTimeout(webContents.reload, 250);
        }
        Menu.setApplicationMenu(Menu.buildFromTemplate(template));
    });

    // load the initial page
    setTimeout(function() {mainWindow.loadURL(url)}, 250);

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

    mainWindow.webContents.on("new-window", function(e, url, frameName, disposition, options) {
        // if a child window opens... modify any other options such as width/height, etc
        // in this case make the child overlap the parent exactly...
        var w = mainWindow.getBounds();
        options.x = w.x;
        options.y = w.y;
        options.width = w.width;
        options.height = w.height;
        //re-use the same child name so all "2nd" windows use the same one.
        //frameName = "child";
    })

    // 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.
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();
    }
});