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Implementing desktop-class productivity apps with Angular and Project Fugu 🅰️💘🐡

Implementing desktop-class productivity apps with Angular and Project Fugu 🅰️💘🐡

Chris is a GDE for Angular and web capabilities. In his hands-on workshop, you’ll learn how to implement desktop-class productivity apps using the new Project Fugu web APIs. This joint project between Google, Intel, Microsoft, and others seeks to bring missing features to the web, including access to the local file system, clipboard, and registering Angular apps as default file handlers. Learn how you can finally bring productivity apps like IDEs, image editors, or office apps to the web! You also need to bring your own laptop to this workshop.

Christian Liebel
PRO

October 05, 2022
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Transcript

  1. Christian Liebel
    @christianliebel
    Consultant
    Implementing desktop-class productivity
    apps with Angular and Project Fugu 🅰💘🐡

    View Slide

  2. Hello, it’s me.
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Christian Liebel
    Twitter:
    @christianliebel
    Email:
    christian.liebel
    @thinktecture.com
    Angular & PWA
    Slides:
    thinktecture.com
    /christian-liebel

    View Slide

  3. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Timetable
    09:00–10:30 Block 1
    10:30–11:00 Break
    11:00–12:30 Block 2
    12:30–14:00 Lunch Break
    14:00–15:30 Block 3
    15:30–16:00 Break
    16:00–17:30 Block 4

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  4. Things NOT to expect
    - Blueprint for PWA
    development
    - No AuthN/AuthZ
    Things To Expect
    - Extensive/up-to-date insights
    into PWA and Project Fugu
    - A productivity app use case
    that works on your desktop &
    smartphone
    - Lots of fun
    - Hands-on exercises
    with Angular and Project Fugu 🅰💘🐡
    Implementing desktop-class productivity apps

    View Slide

  5. https://paint.js.org
    – Productivity app
    – Draw images
    – Lots of actions & tools
    – Installable
    – Read/save files
    – Copy/paste images
    from/to clipboard
    – Share files to other apps
    – Register for file extensions
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Demo Use Case

    View Slide

  6. (Workshop Edition)
    – Productivity app
    – Draw images
    – Lots of actions & tools
    – Installable
    – Read/save files
    – Copy/paste images
    from/to clipboard
    – Share files to other apps
    – Register for file extensions
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Demo Use Case

    View Slide

  7. Setup complete?
    (Node.js, Google Chrome, Editor, Git)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Setup (1/3)
    LAB #0

    View Slide

  8. git clone https://github.com/thinktecture/ng-de-
    2022-fugu.git
    cd ng-de-2022-pwa
    npm i
    git pull
    npm start -- --open
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Setup (3/3)
    LAB #0

    View Slide

  9. Paint PWA Capabilities
    Progressive
    Enhancement
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Agenda

    View Slide

  10. Paint PWA Capabilities
    Progressive
    Enhancement
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Agenda

    View Slide

  11. Canvas
    – Plain bitmap for the web
    – Cross-platform, hardware-
    accelerated graphics
    operations
    – Supports different contexts
    (2D, 3D: WebGL, WebGL 2.0)
    – Supported on all evergreen
    browsers and on IE 9+
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint

    View Slide

  12. Canvas
    Add a canvas element to app.component.html:

    Query the canvas element in app.component.ts:
    @ViewChild('canvas') canvas?: ElementRef;
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint
    LAB #1

    View Slide

  13. Canvas 2D Context
    fillRect(x, y, width, height)
    strokeRect(x, y, width, height)
    beginPath()
    moveTo(x, y)
    lineTo(x, y)
    fill()
    stroke()
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint

    View Slide

  14. Canvas 2D Context
    1. Introduce a new field at the top of
    app.component.ts:
    context?: CanvasRenderingContext2D;
    2. Get the 2D context in ngAfterViewInit():
    const canvas =
    this.canvas!.nativeElement;
    const ctx = canvas.getContext('2d')!;
    this.context = ctx;
    3. Prepare the canvas:
    ctx.fillStyle = 'white';
    ctx.fillRect(0, 0,
    canvas.width,
    canvas.height);
    ctx.fillStyle = 'black';
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint LAB #2

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  15. Low-latency Rendering
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint
    Web pages need to synchronize with
    the DOM on graphics updates
    causing latencies that can make
    drawing difficult
    Low-latency rendering skips syncing
    with the DOM with can lead to a
    more natural experience
    Supported on Chrome (Chrome OS
    and Windows only)

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  16. Low-latency Rendering
    Opt-in to low-latency rendering (app.js):
    const ctx = canvas.getContext('2d', {
    desynchronized: true
    })!;
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint
    LAB #3

    View Slide

  17. Pointer Events
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint
    Users nowadays use different
    input methods, cross-platform
    apps should cover all of them
    Pointer Events offer an abstract
    interface to catch all input
    methods (pointerdown,
    pointermove, pointerup)
    event.offsetX/event.offsetY
    contain the pointer’s position
    relative to the listener

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  18. Pointer Events
    1. In app.component.html, add event bindings for the pointer events:
    (pointerdown)="onPointerDown($event)"
    (pointermove)="onPointerMove($event)"
    (pointerup)="onPointerUp()"
    >
    2. In app.component.ts (onPointerMove()), draw the user input:
    this.context!.fillRect(event.offsetX, event.offsetY, 2, 2);
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint LAB #4

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  19. Bresenham Line Algorithm
    The user may move faster than
    the input can be processed
    For this case, we need to
    remember the previous point
    and interpolate the points in
    between
    The Bresenham line algorithm
    calculates the missing pixels
    between two given points
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint

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  20. Bresenham Line Algorithm
    1. At the top of app.component.ts, a field called previousPoint to store
    the previous point:
    previousPoint?: { x: number, y: number };
    2. In onPointerDown(), set the current point as the previous point:
    this.previousPoint = { x: event.offsetX, y: event.offsetY };
    3. In onPointerUp(), set this.previousPoint to undefined.
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint LAB #5

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  21. Bresenham Line Algorithm
    4. In onPointerMove(), call the Bresenham line algorithm with the points:
    if (this.previousPoint) {
    const currentPoint = { x: event.offsetX, y: event.offsetY };
    for (const point of
    this.paintService.bresenhamLine(this.previousPoint,
    currentPoint)) {
    this.context!.fillRect(point.x, point.y, 2, 2);
    }
    this.previousPoint = currentPoint;
    }
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint LAB #5

    View Slide

  22. Color Selection
    For this demo, we will only implement
    the brush tool. However, we want to
    bring in some color.
    A simple method to implement a
    color selection is to use the HTML
    color-type input element that shows
    the native color picker:

    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint

    View Slide

  23. Color Selection
    1. In app.component.html, replace the content of the node with:

    2. In app.component.ts (onColorChange()), update the context’s fill style
    accordingly:
    this.context!.fillStyle = color.value;
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Paint
    LAB #6

    View Slide

  24. Paint PWA Capabilities
    Progressive
    Enhancement
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Agenda

    View Slide

  25. with Angular and Project Fugu 🅰💘🐡
    Implementing desktop-class productivity apps
    Responsive Linkable Discoverable Installable App-like
    Connectivity
    Independent
    Fresh Safe Re-engageable Progressive

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  26. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Web App
    Manifest
    Service
    Worker

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  27. Web App Manifest
    Distinguishes Web Apps from
    Websites
    JSON-based file containing
    metadata for apps only
    Apps can be identified by search
    engines, app store providers, etc.
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA

    View Slide

  28. manifest.webmanifest
    {
    "short_name": "Paint",
    "name": "Paint Workshop",
    "theme_color": "white",
    "icons": [{
    "src": "icon.png",
    "sizes": "512x512"
    }],
    "start_url": "/index.html",
    "display": "standalone",
    "shortcuts": [/* … */]
    }
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    Names
    Icons
    Display Mode
    Shortcuts
    Start URL
    Theme color (status bar/window bar)

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  29. Manifest Display Modes
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    browser minimal-ui standalone fullscreen

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  30. Manifest Icon Purposes
    (any)
    any context (e.g. app icon)
    monochrome
    different color requirements
    (at risk)
    maskable
    user agent masks icon as required
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    Safe Zone
    Windows iOS Android

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  31. Web App Manifest
    1. Run the following command to add PWA support to the current
    project: ng add @angular/pwa
    2. In manifest.webmanifest,
    a) set name and short_name to values of your choice
    b) change the theme_color to #000080
    c) change the background_color to #808080
    3. In index.html, change the theme-color to #000080.
    4. Test manifest in DevTools: F12 > Application > Manifest
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA LAB #7

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  32. Manifest Shortcuts
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    Secondary entrypoints for your
    application (e.g., home screen
    quick actions, jump lists, …)
    Static definition in Web App
    Manifest
    Dynamic API may follow in the
    future
    Supported by Google Chrome
    for Android, macOS and
    Windows

    View Slide

  33. Web App Manifest
    1. In manifest.webmanifest, add (at least) the following shortcut:
    "shortcuts": [{
    "name": "About Paint",
    "short_name": "About",
    "description": "Show information about Paint",
    "url": "./",
    "icons": [{ "src": "assets/icons/icon-512x512.png", "sizes": "512x512" }]
    }]
    2. Test in DevTools: F12 > Application > Manifest
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    LAB #8

    View Slide

  34. Web App Manifest – Chrome Install Criteria
    1. Web App is not already installed
    2. Meets a user engagement heuristic (user has interacted and clicked
    with origin for at least 30 seconds)
    3. Includes a Web App Manifest that has short_name or name, at least a
    192px and 512px icon, a start_url and a display mode of
    fullscreen, standalone or minimal-ui
    4. Served over HTTPS
    5. Has a registered service worker with a fetch event handler
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    https://web.dev/install-criteria/

    View Slide

  35. Service Worker
    JavaScript executed in an own thread,
    registered by the website
    Acts as a controller, proxy, or
    interceptor
    Has a cache to store responses (for
    offline availability and performance)
    Can wake up even when the website is
    closed and perform background tasks
    (e.g., push notifications or sync)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA

    View Slide

  36. Service Worker
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    Service
    Worker
    Internet
    Website
    HTML/JS
    Cache
    fetch

    View Slide

  37. NgServiceWorker
    Angular CLI supports Service
    Worker generation by simply
    adding PWA support:
    ng add @angular/pwa
    One-size-fits-all Service
    Worker
    Pre-defined functionality,
    limited customizability
    PWA
    with Angular and Project Fugu 🅰💘🐡
    Implementing desktop-class productivity apps

    View Slide

  38. Workbox
    Toolchain by Google
    Includes a CLI
    Generates a service worker
    implementation from directory
    contents (e.g., build output, or
    our development directory)
    Allows you to modify the
    service worker behavior
    (maximum flexibility)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA

    View Slide

  39. Service Worker
    1. In your console, run: npm run pwa
    2. Test in DevTools: F12 > Application > Service Worker
    3. Install the app: Address Bar > Install
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    LAB #9

    View Slide

  40. Service Worker Debugging
    More information on installed
    service workers can be found on
    • about://serviceworker-
    internals (Chromium-based
    browsers)
    • about:serviceworkers
    (Mozilla Firefox)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA

    View Slide

  41. Service Worker Debugging
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA

    View Slide

  42. Lighthouse
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    Auditing tool by Google,
    integrated in Chrome DevTools
    Automatically checks
    performance metrics, PWA
    support, accessibility, SEO and
    other best practices and gives
    tips on how to improve
    Can simulate mobile devices

    View Slide

  43. Lighthouse
    1. Make sure only one tab/window of your PWA is open
    2. Open DevTools: F12 > Lighthouse
    3. Make sure to select at least the “Progressive Web App” category
    4. Click “Analyze page load”
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    PWA
    LAB #10

    View Slide

  44. Paint PWA Capabilities
    Progressive
    Enhancement
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Agenda

    View Slide

  45. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡

    View Slide

  46. Project Fugu
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    »Let’s bring the web
    back – API by API«
    Thomas Steiner, Google

    View Slide

  47. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    Contacts
    Picker
    Screen Wake
    Lock API
    File System
    Access API
    Shape
    Detection API

    View Slide

  48. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    https://goo.gle/fugu-api-tracker

    View Slide

  49. Fugu 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/)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  50. 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?
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  51. Browser
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    navigator.share({ url: 'http://example.com' });
    ShareIntent DataTransferManager
    …
    NSSharingServicePicker

    View Slide

  52. File System Access API
    Some applications heavily rely
    on working with files (e.g. Visual
    Studio Code, Adobe Photoshop,
    …)
    File System Access API allows
    you to open, save and override
    files and directories
    Supported by Chrome, Edge
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  53. File System Access API
    1. Add the following buttons to the bar in app.component.html
    (before the color input):
    Open
    Save
    Copy
    Paste
    Share
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #11

    View Slide

  54. File System Access API
    2. Add the following lines at the top of app.component.ts:
    readonly fileOptions = {
    types: [{
    description: 'PNG files',
    accept: {'image/png': ['.png']}
    }]
    };
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #11

    View Slide

  55. File System Access API
    3. Add the following lines to the save() function:
    const blob = await
    this.paintService.toBlob(this.canvas!.nativeElement);
    const handle = await
    window.showSaveFilePicker(this.fileOptions);
    const writable = await handle.createWritable();
    await writable.write(blob);
    await writable.close();
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #11

    View Slide

  56. File System Access API
    Add the following code to the open() function:
    const [handle] = await
    window.showOpenFilePicker(this.fileOptions);
    const file = await handle.getFile();
    const image = await this.paintService.getImage(file);
    this.context!.drawImage(image, 0, 0);
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #12

    View Slide

  57. Async Clipboard API
    Allows reading from/writing to
    the clipboard in an
    asynchronous manner (UI won’t
    freeze during long-running
    operations)
    Reading from the clipboard
    requires user consent first
    (privacy!)
    Supported by Chrome, Edge
    and Safari and Firefox (plain-
    text only)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  58. Async Clipboard API
    Add the following code to the copy() function:
    await navigator.clipboard.write([
    new ClipboardItem({ "image/png":
    this.paintService.toBlob(this.canvas!.nativeElement) }),
    ]);
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #13

    View Slide

  59. Async Clipboard API
    const clipboardItems = await navigator.clipboard.read();
    for (const clipboardItem of clipboardItems) {
    for (const type of clipboardItem.types) {
    if (type === 'image/png') {
    const blob = await clipboardItem.getType(type);
    const image = await this.paintService.getImage(blob);
    this.context!.drawImage(image, 0, 0);
    }
    }
    }
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #14

    View Slide

  60. Web Share API
    Allows sharing a title, URL, text, or
    files
    API can only be invoked as a
    result of a user action (i.e. a click
    or keypress)
    Supported by Chrome, Edge,
    Safari and Firefox (Android only)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  61. Web Share API
    const blob = await
    this.paintService.toBlob(this.canvas!.nativeElement);
    const file = new File([blob], 'untitled.png', {type:
    'image/png'});
    const item = { files: [file], text: 'Awesome drawing' };
    if (navigator.canShare(item)) {
    await navigator.share(item);
    }
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #15

    View Slide

  62. File Handling API
    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
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  63. File Handling API
    1. Add the following property to your manifest (manifest.webmanifest):
    "file_handlers": [{
    "action": "/index.html",
    "accept": {
    "image/png": [".png"]
    }
    }]
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #16

    View Slide

  64. File Handling API
    2. Add the following code to ngAfterViewInit() in app.component.ts:
    if ('launchQueue' in window) {
    window.launchQueue.setConsumer(async params => {
    const [handle] = params.files;
    if (handle) {
    const file = await handle.getFile();
    const image = await this.paintService.getImage(file);
    ctx.drawImage(image, 0, 0);
    }
    });
    }
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #16

    View Slide

  65. File Handling API
    3. Rebuild PWA: npm run pwa
    Note: Wait for a few seconds and reload the application after opening, as
    the PWA needs to fetch the new files first.
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities
    LAB #16

    View Slide

  66. Summary
    - Project Fugu helps the web to become more and more capable
    - Project Fugu APIs could bring many more app experiences to the web
    (IDEs, productivity apps, etc.)
    - But: Web is threatened by alternative approaches and platforms,
    support for modern Web API varies from platform to platform
    - You can make a difference!
    - File bugs in browser engine bugtrackers
    - File Fugu requests: https://goo.gle/new-fugu-request
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Capabilities

    View Slide

  67. Paint PWA Capabilities
    Progressive
    Enhancement
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Agenda

    View Slide

  68. Overview
    Use available interfaces and functions of
    a system (opposite of Graceful
    Degradation)
    Users with modern, feature-rich browsers
    get a better experience
    Apps are available on older browsers, but
    with limited functionality
    Concept: Browser feature support should
    grow over time—thereby more users can
    enjoy an increasing number of features
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Progressive Enhancement

    View Slide

  69. Overview
    if ('serviceWorker' in navigator) {
    navigator.serviceWorker.register(…)
    .then(() => /* … */);
    }
    In JavaScript: check whether an API/feature is available. If yes—use it!
    Otherwise:
    1. Disable the functionality
    2. Fall back to an alternative API (if available)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Progressive Enhancement

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  70. Disabling unsupported features
    In app.component.ts, introduce the following check object:
    readonly supported = {
    open: 'showOpenFilePicker' in window,
    } as const;
    In app.component.html, disable the open button if the API is unsupported:

    Open
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Progressive Enhancement LAB #17

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  71. Disabling unsupported features
    Introduce checks for the remaining APIs:
    1. Save: 'showSaveFilePicker' in window
    2. Copy: navigator.clipboard && 'write' in navigator.clipboard
    3. Paste: navigator.clipboard && 'read' in navigator.clipboard
    4. Share: 'canShare' in navigator
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Progressive Enhancement LAB #17

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  72. Providing an alternative implementation
    1. In the save() method of app.component.ts, test for the existence of
    the showSaveFilePicker() method on the window object.
    2. If the method does not exist, fall back to the following code for save:
    const anchor = document.createElement('a');
    const url = URL.createObjectURL(blob);
    anchor.href = url;
    anchor.download = '';
    anchor.click();
    URL.revokeObjectURL(url);
    3. Remove the compatibility check to always enable the button.
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Progressive Enhancement LAB #18

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  73. Deployment
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Electron/Capacitor
    JS
    HTML
    CSS
    .ipa
    .exe .app ELF
    .apk .appx
    Single-Page
    Application
    Capacitor
    Electron

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  74. (Simplified)
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Store Deployments
    https://example.com
    .appx
    .apk
    Server
    Microsoft
    Store
    Play
    Store
    Source
    Files

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  75. Run app on your device
    npm run pwa
    https://ngrok.com/download
    ngrok http 3000
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    LAB #19

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  76. Crunch Time
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    LAB #20

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  77. Q&A
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡

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  78. 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!
    Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡
    Summary

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  79. Implementing desktop-class productivity apps
    with Angular and Project Fugu 🅰💘🐡

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

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