2019-11-01 05:04:24 +11:00
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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<title>Open File or Directory</title>
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</head>
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<body>
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<div class="section-wrapper">
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<h1>Use system dialogs</h1>
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<h3>
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The <code>dialog</code> module in Electron allows you to use native
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system dialogs for opening files or directories, saving a file or
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displaying informational messages.
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</h3>
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<p>
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This is a main process module because this process is more efficient
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with native utilities and it allows the call to happen without
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interrupting the visible elements in your page's renderer process.
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</p>
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<p>
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Open the
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2020-02-16 16:46:41 -08:00
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<a href="https://electronjs.org/docs/api/dialog/">
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2019-11-01 05:04:24 +11:00
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full API documentation (opens in new window)
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</a>
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in your browser.
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</p>
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</div>
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<div>
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<div>
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<h2>Open a File or Directory</h2>
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<div>
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<div>
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<button id="select-directory">View Demo</button>
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<span id="selected-file"></span>
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</div>
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<p>
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In this demo, the <code>ipc</code> module is used to send a message
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from the renderer process instructing the main process to launch the
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open file (or directory) dialog. If a file is selected, the main
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process can send that information back to the renderer process.
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</p>
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<h5>Renderer Process</h5>
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<pre>
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<code>
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const {ipcRenderer} = require('electron')
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const selectDirBtn = document.getElementById('select-directory')
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selectDirBtn.addEventListener('click', (event) => {
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ipcRenderer.send('open-file-dialog')
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})
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ipcRenderer.on('selected-directory', (event, path) => {
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document.getElementById('selected-file').innerHTML = `You selected: ${path}`
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})
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</code>
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</pre>
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<h5>Main Process</h5>
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<pre>
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<code>
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const {ipcMain, dialog} = require('electron')
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ipcMain.on('open-file-dialog', (event) => {
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dialog.showOpenDialog({
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properties: ['openFile', 'openDirectory']
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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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</code>
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</pre>
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<div>
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<h2>ProTip</h2>
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<strong>The sheet-style dialog on macOS.</strong>
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<p>
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On macOS you can choose between a "sheet" dialog or a default
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dialog. The sheet version descends from the top of the window. To
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use sheet version, pass the <code>window</code> as the first
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argument in the dialog method.
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</p>
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<pre><code class="language-js">const ipc = require('electron').ipcMain
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const dialog = require('electron').dialog
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const BrowserWindow = require('electron').BrowserWindow
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ipc.on('open-file-dialog-sheet', function (event) {
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const window = BrowserWindow.fromWebContents(event.sender)
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const files = dialog.showOpenDialog(window, { properties: [ 'openFile' ]})
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})</code></pre>
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</div>
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</div>
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</div>
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</div>
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<script>
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// You can also require other files to run in this process
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require("./renderer.js");
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</script>
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</body>
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</html>
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