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<title>Hello World!</title>
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<h1>
Protocol Handler
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<h3>The <code>app</code> module provides methods for handling protocols.</h3>
<p>These methods allow you to set and unset the protocols your app should be the default app for. Similar to when a browser asks to be your default for viewing web pages.</p>
<p>Open the <a href="http://electron.atom.io/docs/api/app">full app API documentation<span class="u-visible-to-screen-reader">(opens in new window)</span></a> in your browser.</p>
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<button id="open-in-browser" class="js-container-target demo-toggle-button">Launch current page in browser
<div class="demo-meta u-avoid-clicks">Supports: Win, macOS <span class="demo-meta-divider">|</span> Process: Main</div>
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<section id='open-app-link'>
<a href="electron-api-demos://open">Now... launch the app from a web link</a>
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<p>You can set your app as the default app to open for a specific protocol. For instance, in this demo we set this app as the default for <code>electron-api-demos://</code>. The demo button above will launch a page in your default browser with a link. Click that link and it will re-launch this app.</p>
<h5>Packaging</h5>
<p>This feature will only work on macOS when your app is packaged. It will not work when you're launching it in development from the command-line. When you package your app you'll need to make sure the macOS <code>plist</code> for the app is updated to include the new protocol handler. If you're using <code>electron-packager</code> then you can add the flag <code>--extend-info</code> with a path to the <code>plist</code> you've created. The one for this app is below.</p>
<h5>Renderer Process</h5>
<pre><code>
const {shell} = require('electron')
const path = require('path')
const protocolHandlerBtn = document.getElementById('protocol-handler')
protocolHandlerBtn.addEventListener('click', () => {
const pageDirectory = __dirname.replace('app.asar', 'app.asar.unpacked')
const pagePath = path.join('file://', pageDirectory, '../../sections/system/protocol-link.html')
shell.openExternal(pagePath)
})
</code></pre>
<h5>Main Process</h5>
<pre><code>
const {app, dialog} = require('electron')
const path = require('path')
if (process.defaultApp) {
if (process.argv.length >= 2) {
app.setAsDefaultProtocolClient('electron-api-demos', process.execPath, [path.resolve(process.argv[1])])
}
} else {
app.setAsDefaultProtocolClient('electron-api-demos')
}
app.on('open-url', (event, url) => {
dialog.showErrorBox('Welcome Back', `You arrived from: ${url}`)
})
</code></pre>
<h5>macOS plist</h5>
<pre><code>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleURLSchemes</key>
<array>
<string>electron-api-demos</string>
</array>
<key>CFBundleURLName</key>
<string>Electron API Demos Protocol</string>
</dict>
</array>
<key>ElectronTeamID</key>
<string>VEKTX9H2N7</string>
</dict>
</plist>
</code>
</pre>
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<script type="text/javascript">
require('./renderer.js')
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