Christian Liebel @christianliebel Consultant Superkräfte für Produktivitäts-PWAs – Project Fugu 

Hello, it’s me. Superkräfte für Produktivitäts-PWAs – Project Fugu Christian Liebel Twitter: @christianliebel Email: christian.liebel @thinktecture.com Angular & PWA Slides: thinktecture.com /christian-liebel 

The image part with relationship ID rId3 was not found in the file. The image part with relationship ID rId3 was not found in the file. The image part with relationship ID rId3 was not found in the file. Special Day “Modern Business Applications” Thema Sprecher Datum, Uhrzeit Blazor in .NET 5: Single-Page-Applications mit C# & WebAssembly Christian Weyer DI, 16. Februar 2021, 11.00 bis 12.00 Realtime Cross-Plattform-Applikationen mit Angular, ASP.NET Core und SignalR Fabian Gosebrink DI, 16. Februar 2021, 12.15 bis 13.15 Superkräfte für Produktivitäts-PWAs – Project Fugu Christian Liebel DI, 16. Februar 2021, 14.30 bis 15.30 Schneller ans Ziel: Web-Apps mit Ionic Max Schulte DI, 16. Februar 2021, 16.00 bis 17.00 

Superkräfte für Produktivitäts-PWAs – Project Fugu Web App Manifest Service Worker 

✅ Offline capability ✅ Push messages ✅ Webcam/microphone access File System Access Raw Clipboard Access Font Table Access Superkräfte für Produktivitäts-PWAs – Project Fugu 

Superkräfte für Produktivitäts-PWAs – Project Fugu 

Cross-Vendor Initiative Led By… Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu – A More Capable Web »Let’s bring the web back – API by API« Thomas Steiner, Google 

Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu https://goo.gle/fugu-api-tracker 

Process – Write an Explainer (https://github.com/WICG/native-file- system/blob/master/EXPLAINER.md) – Discuss capability with developers, browser vendors, standard orgs – Iterate – Compile a design document – W3C TAG Review (https://github.com/w3ctag/design- reviews/issues/390) – Formal spec within Web Incubator Community Group (WICG, https://wicg.github.io/native-file-system/) Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu 

Process – Implementation in Chromium – Launches behind a flag (chrome://flags/#enable-experimental-web- platform-features) – Origin Trial (https://developers.chrome.com/origintrials/) – Transfer to W3C Working Group + Recommendation? Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu 

Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu navigator.share({ url: 'http://example.com' }); ShareIntent DataTransferManager … NSSharingServicePicker 

Progressive Enhancement if ('share' in navigator) { navigator.share({ text: 'Hi!' }); } else { // Fallback method } Superkräfte für Produktivitäts-PWAs – Project Fugu Project Fugu 

Badging API Superkräfte für Produktivitäts-PWAs – Project Fugu 

Motivation - Communicate updates without distracting the user (in constrast to push notifications) - Typically displays a badge on the home screen, task bar or dock - Appearance varies from platform to platform Superkräfte für Produktivitäts-PWAs – Project Fugu Badging API 

API Set the badge navigator.setAppBadge(5); Clear the badge navigator.clearAppBadge(); Superkräfte für Produktivitäts-PWAs – Project Fugu Badging API 

Shortcuts Superkräfte für Produktivitäts-PWAs – Project Fugu 

Provide secondary entry points for your application, now also for Progressive Web Apps added to the home screen Windows: Jump List iOS: Home Screen Quick Actions Superkräfte für Produktivitäts-PWAs – Project Fugu Shortcuts 

Web App Manifest Extension { "shortcuts": [ { "name": "Direct Messages", "url": "/mails/new", "icons": [] }, { "name": "Notifications", "url": "/appointments/new", "icons": [] } ] } Superkräfte für Produktivitäts-PWAs – Project Fugu Shortcuts 

Screen Wake Lock Superkräfte für Produktivitäts-PWAs – Project Fugu 

Motivation - Devices go to sleep in order to reduce energy consumption - However, this can get bothersome in some situations (e.g. while watching a movie, while cooking, etc.) - The Screen Wake Lock API prevents the device from turning of the screen while the application has the wake lock Superkräfte für Produktivitäts-PWAs – Project Fugu Screen Wake Lock API 

API let wakeLockObj; if ('wakeLock' in navigator) { try { wakeLockObj = await navigator.wakeLock.request('screen'); console.log('👍', 'Screen Wake Lock', wakeLockObj); } catch (err) { console.error('👎', 'Screen Wake Lock', err); } } Superkräfte für Produktivitäts-PWAs – Project Fugu Screen Wake Lock API https://web.dev/wake-lock/ 

https://paint.js.org LIVE DEMO Superkräfte für Produktivitäts-PWAs – Project Fugu Async Clipboard & FS Access 

Async Clipboard API Superkräfte für Produktivitäts-PWAs – Project Fugu 

API Copy Content await navigator.clipboard.writeText('foo'); await navigator.clipboard.write(/* data */); Paste Content const content = await navigator.clipboard.readText(); const content = await navigator.clipboard.read(); Superkräfte für Produktivitäts-PWAs – Project Fugu Async Clipboard API 

File System Access API Superkräfte für Produktivitäts-PWAs – Project Fugu 

Motivation - Currently, websites only have very limited access to the file system - Some applications heavily rely on working with files (e.g. Visual Studio Code) - Wouldn’t it be great if your web application could open files or folders from the native file system? Superkräfte für Produktivitäts-PWAs – Project Fugu File System Access API 

API if ('showOpenFilePicker' in window) { const [handle] = await window.showOpenFilePicker(); const file = await handle.getFile(); // do something with the file } else { // use fallback API or disable feature in app } Superkräfte für Produktivitäts-PWAs – Project Fugu File System Access API 

API const [handle] = await self.showOpenFilePicker({ multiple: true, types: [{ description: 'PNG files', accept: {'image/png': ['.png']} }] }); Superkräfte für Produktivitäts-PWAs – Project Fugu File System Access API 

File System Handling API Superkräfte für Produktivitäts-PWAs – Project Fugu 

Motivation Register your PWA as a handler for file extensions Requires installing the application first Declare supported extensions in Web App Manifest and add imperative code to your application logic Superkräfte für Produktivitäts-PWAs – Project Fugu File System Handling API 

Manifest Extension { "file_handlers": [{ "action": "/", "accept": { "image/png": [".png"] } }] } Superkräfte für Produktivitäts-PWAs – Project Fugu File System Handling API 

API if ('launchQueue' in window) { launchQueue.setConsumer(async params => { const [handle] = params.files; // do something with the handle }); } Superkräfte für Produktivitäts-PWAs – Project Fugu File System Handling API 

Superkräfte für Produktivitäts-PWAs – Project Fugu Summary 

New powerful APIs regularly ship with new releases of Chromium-based browsers Some only add minor finishing touches, others enable whole application categories as productivity apps to finally make the shift to the web Some APIs already made their way into other browsers (e.g., Web Share) Fugu process makes sure that capabilities are implemented in a secure, privacy-preserving manner Let’s make the web a more capable platform! Superkräfte für Produktivitäts-PWAs – Project Fugu Summary 

Q&A Superkräfte für Produktivitäts-PWAs – Project Fugu 

Thank you for your kind attention! Christian Liebel @christianliebel [email protected]