c83f836faf
* docs: add references to app.whenReady() in isReady
* refactor: prefer app.whenReady()
In the docs, specs, and lib, replace instances of `app.once('ready')`
(seen occasionally) and `app.on('ready')` (extremely common) with
`app.whenReady()`.
It's better to encourage users to use whenReady():
1. it handles the edge case of registering for 'ready' after it's fired
2. it avoids the minor wart of leaving an active listener alive for
an event that wll never fire again
95 lines
2.8 KiB
JavaScript
95 lines
2.8 KiB
JavaScript
// Modules to control application life and create native browser window
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const { app, BrowserWindow, ipcMain, dialog } = require('electron')
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// Keep a global reference of the window object, if you don't, the window will
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// be closed automatically when the JavaScript object is garbage collected.
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let mainWindow
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function createWindow () {
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// Create the browser window.
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mainWindow = new BrowserWindow({
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width: 800,
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height: 600,
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webPreferences: {
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nodeIntegration: true
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}
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})
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// and load the index.html of the app.
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mainWindow.loadFile('index.html')
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// Open the DevTools.
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// mainWindow.webContents.openDevTools()
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// Emitted when the window is closed.
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mainWindow.on('closed', function () {
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// Dereference the window object, usually you would store windows
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// in an array if your app supports multi windows, this is the time
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// when you should delete the corresponding element.
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mainWindow = null
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})
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}
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// This method will be called when Electron has finished
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// initialization and is ready to create browser windows.
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// Some APIs can only be used after this event occurs.
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app.whenReady().then(createWindow)
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// Quit when all windows are closed.
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app.on('window-all-closed', function () {
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// On OS X it is common for applications and their menu bar
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// to stay active until the user quits explicitly with Cmd + Q
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if (process.platform !== 'darwin') {
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app.quit()
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}
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})
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app.on('activate', function () {
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// On OS X it's common to re-create a window in the app when the
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// dock icon is clicked and there are no other windows open.
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if (mainWindow === null) {
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createWindow()
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}
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})
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ipcMain.on('open-error-dialog', event => {
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dialog.showErrorBox('An Error Message', 'Demonstrating an error message.')
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})
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ipcMain.on('open-information-dialog', event => {
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const options = {
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type: 'info',
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title: 'Information',
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message: "This is an information dialog. Isn't it nice?",
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buttons: ['Yes', 'No']
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}
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dialog.showMessageBox(options, index => {
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event.sender.send('information-dialog-selection', index)
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})
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})
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ipcMain.on('open-file-dialog', event => {
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dialog.showOpenDialog(
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{
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properties: ['openFile', 'openDirectory']
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},
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files => {
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if (files) {
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event.sender.send('selected-directory', files)
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}
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}
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)
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})
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ipcMain.on('save-dialog', event => {
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const options = {
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title: 'Save an Image',
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filters: [{ name: 'Images', extensions: ['jpg', 'png', 'gif'] }]
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}
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dialog.showSaveDialog(options, filename => {
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event.sender.send('saved-file', filename)
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})
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})
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// In this file you can include the rest of your app's specific main process
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// code. You can also put them in separate files and require them here.
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