diff options
Diffstat (limited to 'examples/webenginewidgets/push_notifications')
13 files changed, 0 insertions, 1247 deletions
diff --git a/examples/webenginewidgets/push_notifications/CMakeLists.txt b/examples/webenginewidgets/push_notifications/CMakeLists.txt deleted file mode 100644 index bbb585c9b..000000000 --- a/examples/webenginewidgets/push_notifications/CMakeLists.txt +++ /dev/null @@ -1,7 +0,0 @@ -# Copyright (C) 2022 The Qt Company Ltd. -# SPDX-License-Identifier: BSD-3-Clause - -cmake_minimum_required(VERSION 3.16) -project(simplebrowser LANGUAGES CXX) - -message("\nPlease use simplebrowser to see notifiactions.\n") diff --git a/examples/webenginewidgets/push_notifications/content/index.html b/examples/webenginewidgets/push_notifications/content/index.html deleted file mode 100644 index cce3055cd..000000000 --- a/examples/webenginewidgets/push_notifications/content/index.html +++ /dev/null @@ -1,26 +0,0 @@ -<!DOCTYPE html> -<html> -<head> - <title>Push Notification Using Node and FCM</title> - <link rel="stylesheet" href="style.css"> -</head> -<body> - <h1>Push Notification Using NodeJS and QtWebEngine</h1> - <div id="app"> - <div id="ping-setup"> - <form> - <div> - Ping Me Every [sec]: - </div> - <div class="ping-input"> - <input type="number" name="seconds" min="0" max="3600" required=""> - </div><button>Ping Me</button> - </form> - </div> - <div id="ping-clear"> - <div id="ping-text"></div><button id="ping-clear-button">Clear</button> - </div> - </div> - <script src="ping.js"></script> -</body> -</html> diff --git a/examples/webenginewidgets/push_notifications/content/ping.js b/examples/webenginewidgets/push_notifications/content/ping.js deleted file mode 100644 index 285a57019..000000000 --- a/examples/webenginewidgets/push_notifications/content/ping.js +++ /dev/null @@ -1,84 +0,0 @@ -// Copyright (C) 2022 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -const publicVapidKey = - "BNO4fIv439RpvbReeABNlDNiiBD2Maykn7EVnwsPseH7-P5hjnzZLEfnejXVP7Zt6MFoKqKeHm4nV9BHvbgoRPg"; - -async function setup(delay) -{ - console.log('>> register service worker...'); - const register = await navigator.serviceWorker.register('/worker.js', { scope : '/' }); - console.log('>> service worker registered...'); - - console.log('>> subscribe push subscription to FCM'); - var subscription = await register.pushManager.subscribe( - { userVisibleOnly : true, applicationServerKey : publicVapidKey }); - console.log('>> subscription created...'); - - console.log('>> subscribe to push service...'); - await fetch('/subscribe', { - method : 'POST', - body : JSON.stringify(subscription), - headers : { 'content-type' : 'application/json', 'ping-time' : delay } - }); - console.log('>> push subscription created...') -} - -async function clear() -{ - const register = await navigator.serviceWorker.getRegistration(); - var subscription = await register.pushManager.getSubscription(); - console.log('>> unsubscribe to push service...'); - await fetch('/unsubscribe', { - method : 'POST', - body : JSON.stringify(subscription), - headers : { 'content-type' : 'application/json' } - }); - console.log('>> push unsubscription removed...') - - console.log('>> unsubscribe push subscription to FCM'); - await subscription.unsubscribe(); - console.log('>> subscription removed...'); -} - -function displaySetup(delay = null) -{ - const pingSetup = document.getElementById('ping-setup'); - const pingClear = document.getElementById('ping-clear'); - const pingText = document.getElementById('ping-text'); - if (delay) { - pingClear.style.display = 'block'; - pingSetup.style.display = 'none'; - pingText.innerHTML = 'Ping Me Every ' + delay + ' seconds'; - } else { - pingClear.style.display = 'none'; - pingSetup.style.display = 'block'; - pingText.innerHTML = ""; - } -} - -function handleSetupPing(event) -{ - event.preventDefault(); - - const seconds = document.forms[0].seconds.value; - document.forms[0].reset(); - - // check for service worker support - if ('serviceWorker' in navigator) { - setup(seconds).catch(err => console.error(err)); - } - - displaySetup(seconds); -}; - -function handleClearPing(event) -{ - event.preventDefault(); - clear(); - displaySetup(); -}; - -document.forms[0].addEventListener('submit', handleSetupPing); -const clearButton = document.getElementById('ping-clear-button'); -clearButton.addEventListener('click', handleClearPing); diff --git a/examples/webenginewidgets/push_notifications/content/style.css b/examples/webenginewidgets/push_notifications/content/style.css deleted file mode 100644 index 8176462a2..000000000 --- a/examples/webenginewidgets/push_notifications/content/style.css +++ /dev/null @@ -1,29 +0,0 @@ -body { - font-family: monaco; - height: 100vh; - flex-direction: column; - align-items: center; - justify-content: center; - display: flex; -} -#ping-clear, -#ping-setup { - font-size: 32px; - text-align: center; -} -.form-inputs{ - margin-top: 20px; -} -input { - width: 100px; - height: 30px; -} -button { - font-size: 16px; -} -#ping-text { - margin-bottom: 30px; -} -#ping-clear { - display: none; -} diff --git a/examples/webenginewidgets/push_notifications/content/worker.js b/examples/webenginewidgets/push_notifications/content/worker.js deleted file mode 100644 index ed660a6e9..000000000 --- a/examples/webenginewidgets/push_notifications/content/worker.js +++ /dev/null @@ -1,7 +0,0 @@ -// Copyright (C) 2022 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -self.addEventListener('push', event => { - const data = event.data.json(); - self.registration.showNotification(data.title, { body : data.text }); -}); diff --git a/examples/webenginewidgets/push_notifications/doc/images/notification.png b/examples/webenginewidgets/push_notifications/doc/images/notification.png Binary files differdeleted file mode 100644 index ec5c67457..000000000 --- a/examples/webenginewidgets/push_notifications/doc/images/notification.png +++ /dev/null diff --git a/examples/webenginewidgets/push_notifications/doc/images/permissions.png b/examples/webenginewidgets/push_notifications/doc/images/permissions.png Binary files differdeleted file mode 100644 index dedb6e472..000000000 --- a/examples/webenginewidgets/push_notifications/doc/images/permissions.png +++ /dev/null diff --git a/examples/webenginewidgets/push_notifications/doc/images/push_notifications.png b/examples/webenginewidgets/push_notifications/doc/images/push_notifications.png Binary files differdeleted file mode 100644 index c5ba5f589..000000000 --- a/examples/webenginewidgets/push_notifications/doc/images/push_notifications.png +++ /dev/null diff --git a/examples/webenginewidgets/push_notifications/doc/images/website.png b/examples/webenginewidgets/push_notifications/doc/images/website.png Binary files differdeleted file mode 100644 index 10a4a6150..000000000 --- a/examples/webenginewidgets/push_notifications/doc/images/website.png +++ /dev/null diff --git a/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qdoc b/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qdoc deleted file mode 100644 index 1d12a9cc1..000000000 --- a/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qdoc +++ /dev/null @@ -1,191 +0,0 @@ -// Copyright (C) 2022 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only - -/*! - -\example webenginewidgets/push-notifications -\title WebEngine Push Notifications Example -\ingroup webengine-widgetexamples -\brief Demonstrates how to subscribe to and unsubscribe from push notifications. - -In this example we are going to send push notifications from a web push service to the user. -This is the typical scenario where messages are sent from the application server i.e. website -back-end through a 3rd-party push service, to finally arrive at the user's browser in form of -notifications. To demonstrate this flow, we will implement a simple push service server -application, to which the user can subscribe to receive \e ping messages. - -As already mentioned, in such a workflow there are three different parties involved: - -\list - \li the user's web browser where they receive push notifications - \li 3rd-party push service, which is defined by a subscription endpoint and is a part - of a browser's push service implementation - \li application server, which will store user's subscriptions and initiate push messages - using a subscription endpoint -\endlist - -The user visits a website, where a JavaScript web application uses the JavaScript Push API -to create a push notification subscription. The user is then asked to grant a permission -to receive and display push notifications. Once accepted, the Push API establishes a push channel -with a 3rd-party push service, which in case of QtWebEngine is \l {https://firebase.google.com} -{Firebase Cloud Messaging (FCM)}. The unique push subscription is created that -includes the subscription endpoint URL. The browser then sends a subscription message -to the application server forwarding the endpoint setup. The application server can now -use the subscription endpoint to send notifications to the browser. The browser push service -implementation will deliver a push message. However, to show it, a service worker must -be registered. As the service worker runs in the background, it allows displaying notifications -even if a website, which has installed it, is no longer opened. - -\image push_notifications.png - -Let's go more into implementation details. We start with implementing our custom -push service using NodeJS with two modules: - -\list - \li \l {https://github.com/web-push-libs/web-push} {web-push} - provides the web-push protocol - implementation - \li \l {https://github.com/expressjs/express} {express} - provides the web application framework -\endlist - -Let's initialize a new project and install the required modules in the root directory of this -example: - -\snippet /push_notifications/commands 0 - -These commands should create package.js, which defines the start command: - -\snippet /push_notifications/commands 1 - -Now let's move on to the push service back-end implementation in server.js. - -We start by including the required modules and doing basic \e express framework setup, which -we use to create our custom push server. For simplicity we are going to handle only one -subscription at a time. To do that we need to create \e VAPID keys which we are going to -generate with \e web-push libs. The public key is going to be used by the front-end and authenticate -to the service. - -\quotefromfile webenginewidgets/push_notifications/server.js -\skipto const express -\printto add subscribe route - -\note We are not going to cover the encryption of messages in this example. - -To generate keys, we can use the tool shipped with \e web-push lib, that is installed by -\c npm in our example's root directory. - -\snippet /push_notifications/commands 2 - -Now we add two \c routes to the push server. One to \c subscribe and one to \c unsubscribe, -so that our front-end can send an HTTP POST request to handle the push subscription. -In the subscribe request we will get \c subscription in the request body and we also retrieve -the custom header \c ping-time that defines how often the ping messages should be pushed to -the user. We keep around the \c subscription to be able to send push notifications later. -As a confirmation, we send the 201 status code and schedule the first push notification based on -the \c ping-time value. The \c unsubscribe request simply removes a subscription. - -\quotefromfile webenginewidgets/push_notifications/server.js -\skipto add subscribe route -\printto function sendNotification - -The \c sendNotication() function sends push messages using the web-push lib. We create the payload -with the message we want to present to a user and schedule the next push message. - -\quotefromfile webenginewidgets/push_notifications/server.js -\skipto function sendNotification -\printto server.listen - -In the end we start the server to listen on the given port. - -\quotefromfile webenginewidgets/push_notifications/server.js -\skipto server.listen -\printline started - -Let's move now to our front-end. We create a simple page index.html, where the user can enter how -often they want to receive ping notification messages. We will have two buttons: -\e {Ping Me} to subscribe for push notifications and \e Clear to unsubscribe. -In the end we load ping.js, which we cover next. - -\quotefromfile webenginewidgets/push_notifications/content/index.html -\skipto <body> -\printuntil </body> - -The last piece is creating the logic for the push subscription within the front-end. Here we have two -functions, \c setup and \c clear, to handle subscriptions. When the user clicks on the \e {Ping Me} -button, \c setup is called. To be able to receive notifications, the service worker is needed. -This way the user can leave the website and still get notified as the service worker works -in the background and handles incoming messages. To achieve that, we have to first register -one with: - -\quotefromfile webenginewidgets/push_notifications/content/ping.js -\skipto const register -\printline worker.js - -The call to \c cpushManager.subscribe() will trigger a permission prompt, which is displayed to the -user. If the permission is granted, the push subscription is returned. It includes a URL endpoint -that allows sending notifications to the browser, where the registered service worker waits for -push messages. - -\quotefromfile webenginewidgets/push_notifications/content/ping.js -\skipto var subscription -\printto console.log - -As mentioned the subscription is created for FCM and should be now sent to our custom server -with an HTTP POST request. In addition, we add to the post request the HTTP header with the -\c ping-time the user entered on our website. - -\quotefromfile webenginewidgets/push_notifications/content/ping.js -\skipto await fetch -\printto console.log - -The function \c clear call unsubscribes first from our push server by sending an HTTP POST request -and later from the 3rd-party push service (FCM). - -\quotefromfile webenginewidgets/push_notifications/content/ping.js -\skipuntil async function clear() -\skipuntil { -\printto console.log -\dots -\skipto await fetch -\printto console.log -\dots -\skipto await subscription -\printto console.log - -The rest of code in ping.js is just boilerplate code to read a user provided value -and call \c setup() or \c clear(). - -As the last part of the front-end let's look inside a service worker script, where we simply -register an event listener for \e push events. - -\quotefromfile webenginewidgets/push_notifications/content/worker.js -\skipto self -\printuntil }); -\printuntil }); - -When a push event comes we simply use the Notification JavaScript API to display a notification. - -\note QtWebEngine Notification Example shows how to provide your own handler and customize -the look and feel of a notification message. - -Having the implementation in place, we can start the server on localhost at the port 5000. -To do that, we can simply enter in the console in the project's root directory: - -\snippet /push_notifications/commands 3 - -Now we can fire up \e simplebrowser and enter \c http:\\localhost:5000 as a URL. - -\image website.png - -\note \c QWebEngineProfile cannot be set to \e off-the-record, because push messages would be -disabled. - -After granting the permission we can send our ping request: - -\image permissions.png - -We should see the coming push notification: - -\image notification.png - -\note To troubleshoot errors, open \e {Developer Tools} from Tools menu. -*/ diff --git a/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qmodel b/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qmodel deleted file mode 100644 index 048a55911..000000000 --- a/examples/webenginewidgets/push_notifications/doc/src/push_notifications.qmodel +++ /dev/null @@ -1,837 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<qmt> - 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<a>{00b8f12d-e08b-426a-83b8-83fea8907fab}</a> - <b>{121189af-36df-4efa-b451-3f1f85ef339f}</b> - </MRelation> - </base-MRelation> - </MDependency> - </instance> - </target> - </handle> - </item> - </qlist> - </handles> - </handles> - </relations> - </MObject> - </base-MObject> - <variety-editable>false</variety-editable> - <variety>actor</variety> - </MItem> - </instance> - </target> - </handle> - </item> - </qlist> - </handles> - </handles> - </children> - </MObject> - </base-MObject> - </MPackage> - </instance> - </root-package> - </project> -</qmt> diff --git a/examples/webenginewidgets/push_notifications/push_notifications.pro b/examples/webenginewidgets/push_notifications/push_notifications.pro deleted file mode 100644 index f88018da2..000000000 --- a/examples/webenginewidgets/push_notifications/push_notifications.pro +++ /dev/null @@ -1 +0,0 @@ -message("Please use simplebrowser example to see notificationsi.") diff --git a/examples/webenginewidgets/push_notifications/server.js b/examples/webenginewidgets/push_notifications/server.js deleted file mode 100644 index fc7deb08a..000000000 --- a/examples/webenginewidgets/push_notifications/server.js +++ /dev/null @@ -1,65 +0,0 @@ -// Copyright (C) 2022 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -const express = require('express'); -const webpush = require('web-push'); - -// setup server -const port = 5000; -const server = express(); -server.use(express.json()); -server.use(express.static('content')); - -// we support only one subscription at the time -var subscription = null; - -// setup vapid keys -const vapidKeys = { - publicKey : - "BNO4fIv439RpvbReeABNlDNiiBD2Maykn7EVnwsPseH7-P5hjnzZLEfnejXVP7Zt6MFoKqKeHm4nV9BHvbgoRPg", - privateKey : "HqhrzsRfG5-SB3j45lyUmV7cYZuy-71r2Bb0tgaOefk" -}; - -// set vapid keys for webpush libs -webpush.setVapidDetails('mailto:push@qt.io', vapidKeys.publicKey, vapidKeys.privateKey); - -// add subscribe route -server.post('/subscribe', (req, res) => { - - // subscription request - subscription = req.body; - const delay = req.headers['ping-time']; - console.log('Got subscription with endpoint: ' + subscription.endpoint); - console.log('Ping delay is at: ' + delay); - - // confirm resource created - res.status(201).json({}); - - // schedule notification - setTimeout(() => { sendNotification(delay) }, delay * 1000); -}); - -// add unsubscribe route -server.post('/unsubscribe', (req, res) => { - console.log('Got unsubscribe with endpoint: ' + req.body.endpoint); - subscription = null; - res.status(201).json({}); -}); - -function sendNotification(delay) -{ - if (!subscription) - return; - - // create payload text - const payload = JSON.stringify({ title : 'Ping !', text : 'Visit qt.io', url : 'www.qt.io' }); - - // send notification - console.log('Sending notification !'); - webpush.sendNotification(subscription, payload).catch(err => console.error(err)); - - // schedule next notification - setTimeout(() => { sendNotification(delay) }, delay * 1000); -} - -server.listen(port, () => console.log(`Push server started at port ${port}`)); |
