cc: [email protected]

On Monday, November 15, 2021 at 8:53:37 AM UTC-8 Diego González wrote:

> Hola Yoav, I am looking at making the amendments listed on the github 
> issues. I will update soon with the changes. Thanks 
>
> On Monday, 15 November 2021 at 08:44:41 UTC [email protected] wrote:
>
>> Thanks Diego! The updates are a great improvement, but I suspect are not 
>> sufficient for an interoperable implementation. I left a couple of comments 
>> on the open issues.
>>
>> On Wed, Nov 10, 2021 at 5:11 PM Diego González <[email protected]> wrote:
>>
>>> Hola Yoav,
>>>
>>> We've gone through several iterations of the WCO spec reviewed by Joshua 
>>> Bell from Google, and while we are still making changes to it, we believe 
>>> it is in a much better state and want to resubmit for consideration of the 
>>> approvals needed for I2S.  See the updated spec below:
>>> https://wicg.github.io/window-controls-overlay/
>>>
>>> --Diego
>>>
>>> On Thursday, 21 October 2021 at 21:05:09 UTC+1 [email protected] 
>>> wrote:
>>>
>>>> On Thursday, October 21, 2021 at 9:31:23 AM UTC+2 Yoav Weiss wrote:
>>>>
>>>>> This is an exciting improvement to PWA parity with native apps! :) 
>>>>>
>>>>> On Wed, Oct 20, 2021 at 10:49 PM 'Diego Gonzalez' via blink-dev <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> Contact emails 
>>>>>>
>>>>>> [email protected], [email protected], [email protected], 
>>>>>> [email protected]
>>>>>>
>>>>>>  
>>>>>> Explainer 
>>>>>>
>>>>>>
>>>>>> https://github.com/WICG/window-controls-overlay/blob/master/explainer.md
>>>>>>
>>>>>>  
>>>>>> Specification 
>>>>>>
>>>>>> https://wicg.github.io/window-controls-overlay/ 
>>>>>>
>>>>>
>>>>> The spec looks like it could use some work. Beyond the editorial, it 
>>>>> doesn't seem like it defines the novel concepts that it introduces, nor 
>>>>> the 
>>>>> relevant processing models.
>>>>>
>>>>
>>>> Let me expand on that a bit. The spec introduces a new concept of a 
>>>> "window overlay" without really creating it as a concept. 
>>>> What I expect an interoperable spec to define the concept with as much 
>>>> detail as possible without getting OS- or implementation-specific. 
>>>> (Just to draw an example of what I have in mind, if I had to make 
>>>> something up, I'd go with something like: "<dfn>Window overlay</dfn> is an 
>>>> interface element that the operating system uses consistently across 
>>>> applications to enable the user to perform certain action to control the 
>>>> application such as closing it, expanding it to full screen, etc. This UI 
>>>> element takes fixed dimensions....")
>>>>
>>>> Then, once you have that concept defined, you can start building on it 
>>>> and define the processing of the different methods based on that.
>>>>
>>>> I'll open issues with other suggestions.
>>>>
>>>>  
>>>>>
>>>>>>  
>>>>>> Design docs 
>>>>>>
>>>>>>  
>>>>>>
>>>>>> https://github.com/WICG/window-controls-overlay/blob/main/explainer.md
>>>>>>
>>>>>>  
>>>>>> Summary 
>>>>>>
>>>>>> Window Controls Overlay allows a developer to create a custom title 
>>>>>> bar UX by extending the installed app’s client area. The client area now 
>>>>>> covers the entire window except for the window controls (close, 
>>>>>> maximize/restore, minimize), which are overlaid in their respective 
>>>>>> position. 
>>>>>>
>>>>>>  
>>>>>>
>>>>>> The web app developer is responsible for drawing and input-handling 
>>>>>> for the entire window except for the window controls overlay. This 
>>>>>> includes defining which area of the window is draggable as well, with a 
>>>>>> prefixed and non-prefixed version of a css property supported, as 
>>>>>> implemented in: crrev.com/c/3094474.
>>>>>>
>>>>>>  
>>>>>>
>>>>>> Intended uses for the Window Controls Overlay are creating seamless 
>>>>>> UX that can use the area that was reserved for the title bar before. 
>>>>>> Many 
>>>>>> modern applications include menus, search bars and other controls in the 
>>>>>> title bar, and this feature enables this on installed web apps.
>>>>>>
>>>>>>  
>>>>>> Blink component 
>>>>>>
>>>>>> UI>Browser>WebAppInstalls 
>>>>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:UI%3EBrowser%3EWebAppInstalls>
>>>>>>
>>>>>>  
>>>>>> Search tags 
>>>>>>
>>>>>> PWA <https://chromestatus.com/features#tags:PWA>, web app 
>>>>>> <https://chromestatus.com/features#tags:web%20app>, title bar 
>>>>>> <https://chromestatus.com/features#tags:title%20bar>, titlebar 
>>>>>> <https://chromestatus.com/features#tags:titlebar>, customization 
>>>>>> <https://chromestatus.com/features#tags:customization>, window 
>>>>>> controls <https://chromestatus.com/features#tags:window%20controls>
>>>>>>
>>>>>>  
>>>>>> TAG review 
>>>>>>
>>>>>> https://github.com/w3ctag/design-reviews/issues/481
>>>>>>
>>>>>>  
>>>>>> TAG review status 
>>>>>>
>>>>>> Resolution: satisfied
>>>>>>
>>>>>>  
>>>>>> Risks 
>>>>>>
>>>>>>  
>>>>>> Interoperability and Compatibility 
>>>>>>
>>>>>> Given that Edge has interest in the feature, there would be at least 
>>>>>> one other browser that implements it. The feature involves additive 
>>>>>> changes 
>>>>>> (new web app manifest entry, new JS API, new CSS env variables) and 
>>>>>> modifications (changes to frame, new use of env(safe-area-inset-*), but 
>>>>>> no 
>>>>>> removals, so the compatibility risk is minimal.
>>>>>>
>>>>>  
>>>>>>
>>>>>> Gecko: defer 
>>>>>> https://github.com/mozilla/standards-positions/issues/529 
>>>>>>
>>>>>>  
>>>>>>
>>>>>> WebKit: No signal 
>>>>>> https://lists.webkit.org/pipermail/webkit-dev/2021-May/031865.html 
>>>>>>
>>>>>>  
>>>>>>
>>>>>> Web developers: Positive
>>>>>>
>>>>>> https://twitter.com/firt/status/1385238446046859268?s=20
>>>>>>
>>>>>> https://twitter.com/AnaestheticsApp/status/1408727417330573314?s=20
>>>>>>
>>>>>> https://twitter.com/bashik7/status/1385821988208275457?s=20
>>>>>>
>>>>>> https://twitter.com/abraham/status/1385201046767738880?s=20
>>>>>>
>>>>>>  
>>>>>> Ergonomics 
>>>>>>
>>>>>> The changes associated with this feature will only be enabled for 
>>>>>> PWAs that opt-in to it, so there are minimal risks posed to the browser 
>>>>>> as 
>>>>>> a whole. A PWA that opts-in to the feature should also have minimal 
>>>>>> ergonomics risk since the manifest already needs to be parsed on startup 
>>>>>> to 
>>>>>> determine the correct display mode in which the app should be launched, 
>>>>>> so 
>>>>>> adding one extra manifest check on startup should have minimal impact.
>>>>>>
>>>>>>  
>>>>>> Activation 
>>>>>>
>>>>>> The activation risk is low since this feature includes all the tools 
>>>>>> needed to create an app that uses the full extent of the window: new 
>>>>>> UA-provided window controls overlay, JS APIs to query the size of the 
>>>>>> overlay, and CSS environment variables to layout content around the 
>>>>>> overlay.
>>>>>>
>>>>>
>>>>> What do we expect developers to do as a fallback in non-supporting 
>>>>> browsers?  
>>>>>
>>>>>>  
>>>>>> Security 
>>>>>>
>>>>>> The major risk is that giving sites partial control over the top of 
>>>>>> the app window allows developers to spoof content in what was previously 
>>>>>> a 
>>>>>> trusted, UA-controlled region. To minimize the risk of spoofing, the app 
>>>>>> will open by default in “standalone” mode with a full width title bar, 
>>>>>> and 
>>>>>> the user can toggle window controls overlay on and off via a button in 
>>>>>> the 
>>>>>> title bar/overlay.
>>>>>>
>>>>>
>>>>> OK, so both the app *and* the user need to opt-in? 
>>>>>
>>>>>>  
>>>>>> Debuggability 
>>>>>>
>>>>>> The feature itself can be easily debugged by installing the PWA. 
>>>>>> Since it is a visual feature on the window itself, it is easy to test. 
>>>>>> Nonetheless, making sure parsing the “display-override” mode and 
>>>>>> associated 
>>>>>> values correctly is desired, which should be incorporated into the 
>>>>>> application tab of devtools, where all the other manifest warnings are 
>>>>>> displayed. 
>>>>>>
>>>>>>  
>>>>>> Is this feature fully tested by web-platform-tests 
>>>>>> <https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>
>>>>>> ? 
>>>>>>
>>>>>> 3170531: dpwas: WPT Tests for window-controls-overlay | 
>>>>>> https://chromium-review.googlesource.com/c/chromium/src/+/3170531
>>>>>>
>>>>>>  
>>>>>> Flag name 
>>>>>>
>>>>>> #enable-desktop-pwas-window-controls-overlay
>>>>>>
>>>>>>  
>>>>>> Requires code in //chrome? 
>>>>>>
>>>>>> False
>>>>>>
>>>>>>  
>>>>>> Tracking bug 
>>>>>>
>>>>>> https://bugs.chromium.org/p/chromium/issues/detail?id=937121
>>>>>>
>>>>>>  
>>>>>> Launch bug 
>>>>>>
>>>>>> https://crbug.com/1108107
>>>>>>
>>>>>>  
>>>>>> Sample links 
>>>>>>
>>>>>>  
>>>>>>
>>>>>> https://amandabaker.github.io/pwa/explainer-example/index.html
>>>>>>
>>>>>>  
>>>>>> Estimated milestones 
>>>>>>
>>>>>> OriginTrial desktop last
>>>>>>
>>>>>> 96
>>>>>>
>>>>>> OriginTrial desktop first
>>>>>>
>>>>>> 93
>>>>>>
>>>>>> Expected Release
>>>>>>
>>>>>> 97
>>>>>>
>>>>>>  
>>>>>> Link to entry on the Chrome Platform Status 
>>>>>>
>>>>>> https://chromestatus.com/feature/5741247866077184
>>>>>>
>>>>>>  
>>>>>> Links to previous Intent discussions 
>>>>>>
>>>>>> Intent to prototype: 
>>>>>> https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/cper6nNLFRQ/hU91kfCWBQAJ
>>>>>>
>>>>>> Intent to Experiment: 
>>>>>> https://groups.google.com/a/chromium.org/g/blink-dev/c/HNHbpxvrECA/m/JJoXKQI3BAAJ
>>>>>>
>>>>>>  
>>>>>>
>>>>>> This intent message was generated by Chrome Platform Status 
>>>>>> <https://www.chromestatus.com/>.
>>>>>>
>>>>>>  
>>>>>>
>>>>>>  
>>>>>>
>>>>>> Regards,
>>>>>>
>>>>>>  
>>>>>>
>>>>>> *Diego González-Zúñiga*
>>>>>>
>>>>>> PM, Microsoft Edge
>>>>>>
>>>>>>  
>>>>>>
>>>>>>  
>>>>>>
>>>>>> -- 
>>>>>> You received this message because you are subscribed to the Google 
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>>>>>>
>>>>> To unsubscribe from this group and stop receiving emails from it, send 
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>>>>>
>>>>>
>>>>>> To view this discussion on the web visit 
>>>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/VI1PR83MB041666BD26451656C388347CCCBE9%40VI1PR83MB0416.EURPRD83.prod.outlook.com
>>>>>>  
>>>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/VI1PR83MB041666BD26451656C388347CCCBE9%40VI1PR83MB0416.EURPRD83.prod.outlook.com?utm_medium=email&utm_source=footer>
>>>>>> .
>>>>>>
>>>>>

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