main.js

/* eslint-disable */

// Modules to control application life and create native browser window
const {app, BrowserWindow} = require('electron')
const Menu = require('electron').Menu

app.on('ready', () => {
  createWindow()
  createMenu()
})

function createMenu() {
  const application = {
    label: "Application",
    submenu: [
      {
        label: "About Application",
        selector: "orderFrontStandardAboutPanel:"
      },
      {
        type: "separator"
      },
      {
        label: "Quit",
        accelerator: "Command+Q",
        click: () => {
          app.quit()
        }
      }
    ]
  }

  const edit = {
    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:"
      }
    ]
  }

  const template = [
    application,
    edit
  ]

  Menu.setApplicationMenu(Menu.buildFromTemplate(template))
}

// 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,
    loadingScreen,
    windowParams = {        
        width: 1000,
        height: 700,
        show: false,
        webPreferences: {
          devTools: false
        }
    };


function createLoadingScreen() {
    loadingScreen = new BrowserWindow(Object.assign(windowParams, {parent: mainWindow}));
    loadingScreen.loadURL('file://' + __dirname + '/loading.html');
    loadingScreen.on('closed', () => loadingScreen = null);
    loadingScreen.webContents.on('did-finish-load', () => {
        loadingScreen.show();
    });
}

function createWindow() {
    // Create the browser window.
    mainWindow = new BrowserWindow(windowParams);

    // and load the index.html of the app.
    mainWindow.loadURL(`file://${__dirname}/index.html`);
    // mainWindow.setProgressBar(-1); // hack: force icon refresh
    mainWindow.webContents.on('did-finish-load', () => {
        mainWindow.show();

        if (loadingScreen) {
            let loadingScreenBounds = loadingScreen.getBounds();
            mainWindow.setBounds(loadingScreenBounds);
            loadingScreen.close();
        }
    });

    // 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', () => {
    createLoadingScreen();
    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.