Intent to Ship: CSS Subgrid
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Ethan Jimenez
Jun 15, 2023, 1:49:13 AM6/15/23
to blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT), Ian Kilpatrick
Contact emails
Explainer
None
Specification
https://www.w3.org/TR/css-grid-2/#subgrids
Design docs
https://docs.google.com/document/d/1cpsCmzdDlXUKtMxOUKIoJFyLH54mLVhZnam_z0PriO0/edit?usp=sharing
Summary
Implements the CSS Grid Layout Module Level 2 specification, which introduces the concept of a "subgrid" to nested grid containers.
Blink component
Search tags
TAG review
Review Request for CSS Subgrid · Issue #712 · w3ctag/design-reviews (github.com)
TAG review status
Issues addressed
Risks
Interoperability and Compatibility
This is a well-defined specification from the W3C, so we would be addressing some interoperability gaps instead of causing them.
Gecko: Shipped/Shipping
WebKit: Shipped/Shipping
Web developers: Strongly positive
Other signals:
WebView application risks
Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?
Debuggability
This feature is an extension of the capabilities of the CSS Grid Layout Module, no new properties will be introduced, but a new value "subgrid" will be introduced and properly rolled into the DevTools repository.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes
Is this feature fully tested by web-platform-tests?
Yes
Flag name
LayoutNGSubgrid
Requires code in //chrome?
False
Tracking bug
Estimated milestones
The below estimates may adjust depending on when fragmentation support and the fixes for a couple of invalidation bugs are completed.
Anticipated spec changes
The below issues require spec resolution. These ones have interop risk depending on the resulting resolutions, but there is currently no interop between browsers on these today. As a result, we don’t consider these to block shipping, but we do plan to continue to drive forward resolutions:
- [css-grid-1] Application of grid-positioning properties to static position of grid children is inconsistent · Issue #7661 · w3c/csswg-drafts (github.com)
- [css-grid-2] Honoring the specified width/height of a subgrid · Issue #8966 · w3c/csswg-drafts (github.com)
The below issues require spec clarification, but there is already consensus between implementations and should not block shipping or result in any future risk:
- [css-grid-2] Clamp out-of-range subgrid items before or after auto placement? · Issue #8494 · w3c/csswg-drafts (github.com)
- [css-grid-2] How to properly accommodate margin/border/padding of a subgrid with no item on the edges · Issue #7465 · w3c/csswg-drafts (github.com)
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5663795354533888
Links to previous Intent discussions
Intent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/MN2PR00MB06691936F5BB8575F43A9704BC569%40MN2PR00MB0669.namprd00.prod.outlook.com
This intent message was generated by Chrome Platform Status.
tkent via Chromestatus
Jun 15, 2023, 2:49:36 AM6/15/23
to blin...@chromium.org
LGTM1. Two other browsers already shipped the feature. No doubts about shipping it.
Yoav Weiss
Jun 15, 2023, 5:32:35 AM6/15/23
to Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT), Ian Kilpatrick
Well, a short search revealed this article (by Ahmed Shadeed) as a great explainer!
https://wpt.fyi/results/css/css-grid/subgrid?label=experimental&label=master&aligned has a few red spots. Are those being tracked somewhere? Any sense of their impact on compatibility once we say we `@supports` subgrid?
--
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Yoav Weiss
Jun 15, 2023, 5:36:08 AM6/15/23
to Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT), Ian Kilpatrick
Also, thank you so much for working on this and aligning us with other vendors on this important developer feature!! :)
Ian Kilpatrick
Jun 15, 2023, 12:04:42 PM6/15/23
to Yoav Weiss, Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT)
wpt.fyi is just a bit slow - all these tests are passing on ToT except "line-names-007.html" which is dependent on a CSSWG resolution from one of the issues listed below.
We've also asked that the additional tests which have been written be added to the interop 2023 effort here: https://github.com/web-platform-tests/interop/issues/361
Ian
Yoav Weiss
Jun 15, 2023, 12:10:39 PM6/15/23
to Ian Kilpatrick, Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT)
That's great to hear!!
Yoav Weiss
Jun 15, 2023, 5:22:59 PM6/15/23
to Ian Kilpatrick, Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT)
LGTM2
Manuel Rego Casasnovas
Jun 16, 2023, 7:14:16 AM6/16/23
to Yoav Weiss, Ian Kilpatrick, Ethan Jimenez, blin...@chromium.org, Alison Maher, Kurt Catti-Schmidt (SCHMIDT)
LGTM3
Really looking forward for having subgrid support everywhere!
On 15/06/2023 23:22, Yoav Weiss wrote:
> LGTM2
>
> On Thu, Jun 15, 2023 at 6:10 PM Yoav Weiss <yoav...@chromium.org
> <mailto:yoav...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 6:04 PM Ian Kilpatrick
> <ikilp...@chromium.org <mailto:ikilp...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 2:36 AM Yoav Weiss
> <yoav...@chromium.org <mailto:yoav...@chromium.org>> wrote:
>
> Also, thank you so much for working on this and aligning us
> with other vendors on this important developer feature!! :)
>
> On Thu, Jun 15, 2023 at 11:32 AM Yoav Weiss
> <yoav...@chromium.org <mailto:yoav...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 7:49 AM 'Ethan Jimenez' via
> blink-dev <blin...@chromium.org
> <mailto:blin...@chromium.org>> wrote:
>
>
> Contact emails____
>
> eth...@microsoft.com <mailto:eth...@microsoft.com>____
>
> __ __
>
>
> Explainer____
>
> __ __
>
>
> Specification____
>
> https://www.w3.org/TR/css-grid-2/#subgrids
> <https://www.w3.org/TR/css-grid-2/#subgrids>____
>
> __ __
>
>
> Design docs____
>
> __ __
>
> https://docs.google.com/document/d/1cpsCmzdDlXUKtMxOUKIoJFyLH54mLVhZnam_z0PriO0/edit?usp=sharing <https://docs.google.com/document/d/1cpsCmzdDlXUKtMxOUKIoJFyLH54mLVhZnam_z0PriO0/edit?usp=sharing>____
>
> __ __
>
>
> Summary____
>
> __ __
>
>
> Blink component____
>
> Blink>CSS
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>____
>
> __ __
>
>
> Search tags____
>
> subgrid
> <https://chromestatus.com/features#tags:subgrid>,
> css-grid-2
> <https://chromestatus.com/features#tags:css-grid-2>,
> css <https://chromestatus.com/features#tags:css>____
>
> __ __
>
>
> TAG review____
> <https://github.com/w3ctag/design-reviews/issues/712>____
>
> __ __
>
>
> TAG review status____
>
> Issues addressed____
>
> __ __
>
>
> Risks____
>
> __ __
>
>
> Interoperability and Compatibility____
>
> __ __
>
> /Gecko/: Shipped/Shipping____
>
> __ __
>
> /WebKit/: Shipped/Shipping____
>
> __ __
>
> /Web developers/: Strongly positive____
>
> __ __
>
> /Other signals/:____
>
> __ __
>
>
> WebView application risks____
>
> /Does this intent deprecate or change behavior of
>
> __ __
>
>
> Debuggability____
>
> __ __
>
> Yes____
>
> __ __
>
> Yes
>
>
> https://wpt.fyi/results/css/css-grid/subgrid?label=experimental&label=master&aligned <https://wpt.fyi/results/css/css-grid/subgrid?label=experimental&label=master&aligned> has a few red spots. Are those being tracked somewhere? Any sense of their impact on compatibility once we say we `@supports` subgrid?
>
> Ian
>
>
>
> ____
>
> __ __
>
>
> Flag name____
>
> LayoutNGSubgrid____
>
> __ __
>
>
> Requires code in //chrome?____
>
> False____
>
> __ __
>
>
> Tracking bug____
>
> https://crbug.com/618969 <https://crbug.com/618969>____
>
> __ __
>
> __ __
>
> Shipping on desktop____
>
>
>
> 116____
>
> DevTrial on desktop____
>
>
>
> 114____
>
> __ __
>
> Shipping on Android____
>
>
>
> 116____
>
> DevTrial on Android____
>
>
>
> 114____
>
> __ __
>
> Shipping on iOS____
>
>
>
> 116____
>
> DevTrial on iOS____
>
>
>
> 114____
>
> __ __
>
>
> Anticipated spec changes____
>
> * [css-grid-1] Application of grid-positioning
> * [css-grid-2] Honoring the specified width/height
> <https://github.com/w3c/csswg-drafts/issues/8966>____
>
> __ __
>
> * [css-grid-2] Clamp out-of-range subgrid items
> <https://github.com/w3c/csswg-drafts/issues/8494>____
> * [css-grid-2] How to properly accommodate
>
> __ __
>
>
> Link to entry on the Chrome Platform Status____
>
> https://chromestatus.com/feature/5663795354533888
> <https://chromestatus.com/feature/5663795354533888>____
>
> __ __
>
>
> Links to previous Intent discussions____
>
> Intent to prototype:
> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/MN2PR00MB06691936F5BB8575F43A9704BC569%40MN2PR00MB0669.namprd00.prod.outlook.com <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/MN2PR00MB06691936F5BB8575F43A9704BC569%40MN2PR00MB0669.namprd00.prod.outlook.com>____
>
> __ __
>
> __ __
Really looking forward for having subgrid support everywhere!
On 15/06/2023 23:22, Yoav Weiss wrote:
> LGTM2
>
> On Thu, Jun 15, 2023 at 6:10 PM Yoav Weiss <yoav...@chromium.org
> <mailto:yoav...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 6:04 PM Ian Kilpatrick
> <ikilp...@chromium.org <mailto:ikilp...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 2:36 AM Yoav Weiss
> <yoav...@chromium.org <mailto:yoav...@chromium.org>> wrote:
>
> Also, thank you so much for working on this and aligning us
> with other vendors on this important developer feature!! :)
>
> On Thu, Jun 15, 2023 at 11:32 AM Yoav Weiss
> <yoav...@chromium.org <mailto:yoav...@chromium.org>> wrote:
>
>
>
> On Thu, Jun 15, 2023 at 7:49 AM 'Ethan Jimenez' via
> blink-dev <blin...@chromium.org
>
>
> Contact emails____
>
> eth...@microsoft.com <mailto:eth...@microsoft.com>____
>
> __ __
>
>
> Explainer____
>
> None
>
>
> Well, a short search revealed this article
> <https://ishadeed.com/article/learn-css-subgrid/> (by
> None
>
>
> Well, a short search revealed this article
> Ahmed Shadeed) as a great explainer!
>
>
> ____
>
>
>
> __ __
>
>
> Specification____
>
> https://www.w3.org/TR/css-grid-2/#subgrids
> <https://www.w3.org/TR/css-grid-2/#subgrids>____
>
> __ __
>
>
> Design docs____
>
> __ __
>
> https://docs.google.com/document/d/1cpsCmzdDlXUKtMxOUKIoJFyLH54mLVhZnam_z0PriO0/edit?usp=sharing <https://docs.google.com/document/d/1cpsCmzdDlXUKtMxOUKIoJFyLH54mLVhZnam_z0PriO0/edit?usp=sharing>____
>
> __ __
>
>
> Summary____
>
> Implements the CSS Grid Layout Module Level 2
> specification, which introduces the concept of a
> "subgrid" to nested grid containers.____
> Implements the CSS Grid Layout Module Level 2
> specification, which introduces the concept of a
>
> __ __
>
>
> Blink component____
>
> Blink>CSS
> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>____
>
> __ __
>
>
> Search tags____
>
> subgrid
> <https://chromestatus.com/features#tags:subgrid>,
> css-grid-2
> <https://chromestatus.com/features#tags:css-grid-2>,
> css <https://chromestatus.com/features#tags:css>____
>
> __ __
>
>
> TAG review____
> <https://github.com/w3ctag/design-reviews/issues/712>____
>
> __ __
>
>
> TAG review status____
>
> Issues addressed____
>
> __ __
>
>
> Risks____
>
> __ __
>
>
> Interoperability and Compatibility____
>
> This is a well-defined specification from the W3C,
> so we would be addressing some interoperability gaps
> instead of causing them.____
> This is a well-defined specification from the W3C,
> so we would be addressing some interoperability gaps
>
> __ __
>
> /Gecko/: Shipped/Shipping____
>
> __ __
>
> /WebKit/: Shipped/Shipping____
>
> __ __
>
> /Web developers/: Strongly positive____
>
> __ __
>
> /Other signals/:____
>
> __ __
>
>
> WebView application risks____
>
> /Does this intent deprecate or change behavior of
> existing APIs, such that it has potentially high
> risk for Android WebView-based applications?/____
>
> __ __
>
>
> Debuggability____
>
> This feature is an extension of the capabilities of
> the CSS Grid Layout Module, no new properties will
> be introduced, but a new value "subgrid" will be
> introduced and properly rolled into the DevTools
> repository.____
> This feature is an extension of the capabilities of
> the CSS Grid Layout Module, no new properties will
> be introduced, but a new value "subgrid" will be
> introduced and properly rolled into the DevTools
>
> __ __
>
>
> Will this feature be supported on all six
> Blink platforms (Windows, Mac, Linux, Chrome
> OS, Android, and Android WebView)?____
>
> Will this feature be supported on all six
> Blink platforms (Windows, Mac, Linux, Chrome
>
> Yes____
>
> __ __
>
>
> Is this feature fully tested by
> web-platform-tests
> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?____
>
> Is this feature fully tested by
> web-platform-tests
>
> Yes
>
>
> https://wpt.fyi/results/css/css-grid/subgrid?label=experimental&label=master&aligned <https://wpt.fyi/results/css/css-grid/subgrid?label=experimental&label=master&aligned> has a few red spots. Are those being tracked somewhere? Any sense of their impact on compatibility once we say we `@supports` subgrid?
>
>
> wpt.fyi is just a bit slow - all these tests are passing on ToT
> except "line-names-007.html" which is dependent on a CSSWG
> resolution from one of the issues listed below.
>
>
> That's great to hear!!
>
>
>
> We've also asked that the additional tests which have been
> written be added to the interop 2023 effort
> here: https://github.com/web-platform-tests/interop/issues/361
> <https://github.com/web-platform-tests/interop/issues/361>
>
> wpt.fyi is just a bit slow - all these tests are passing on ToT
> except "line-names-007.html" which is dependent on a CSSWG
> resolution from one of the issues listed below.
>
>
> That's great to hear!!
>
>
>
> We've also asked that the additional tests which have been
> written be added to the interop 2023 effort
> here: https://github.com/web-platform-tests/interop/issues/361
>
> Ian
>
>
>
> ____
>
> __ __
>
>
> Flag name____
>
> LayoutNGSubgrid____
>
> __ __
>
>
> Requires code in //chrome?____
>
> False____
>
> __ __
>
>
> Tracking bug____
>
> https://crbug.com/618969 <https://crbug.com/618969>____
>
> __ __
>
>
> Estimated milestones
>
> The below estimates may adjust depending on
> when fragmentation support and the fixes for
> a couple of invalidation bugs are completed.____
>
> Estimated milestones
>
> The below estimates may adjust depending on
> when fragmentation support and the fixes for
>
> __ __
>
> Shipping on desktop____
>
>
>
> 116____
>
> DevTrial on desktop____
>
>
>
> 114____
>
> __ __
>
> Shipping on Android____
>
>
>
> 116____
>
> DevTrial on Android____
>
>
>
> 114____
>
> __ __
>
> Shipping on iOS____
>
>
>
> 116____
>
> DevTrial on iOS____
>
>
>
> 114____
>
> __ __
>
>
> Anticipated spec changes____
>
> The below issues require spec resolution. These ones
> have interop risk depending on the resulting
> resolutions, but there is currently no interop
> between browsers on these today. As a result, we
> don’t consider these to block shipping, but we do
> plan to continue to drive forward resolutions:____
> The below issues require spec resolution. These ones
> have interop risk depending on the resulting
> resolutions, but there is currently no interop
> between browsers on these today. As a result, we
> don’t consider these to block shipping, but we do
>
> * [css-grid-1] Application of grid-positioning
> properties to static position of grid children
> is inconsistent · Issue #7661 · w3c/csswg-drafts
> (github.com)
> <https://github.com/w3c/csswg-drafts/issues/7661>____
> is inconsistent · Issue #7661 · w3c/csswg-drafts
> (github.com)
> * [css-grid-2] Honoring the specified width/height
> <https://github.com/w3c/csswg-drafts/issues/8966>____
>
> __ __
>
> The below issues require spec clarification, but
> there is already consensus between implementations
> and should not block shipping or result in any
> future risk:____
> The below issues require spec clarification, but
> there is already consensus between implementations
> and should not block shipping or result in any
>
> * [css-grid-2] Clamp out-of-range subgrid items
> <https://github.com/w3c/csswg-drafts/issues/8494>____
> * [css-grid-2] How to properly accommodate
> margin/border/padding of a subgrid with no item
> on the edges · Issue #7465 · w3c/csswg-drafts
> (github.com)
> <https://github.com/w3c/csswg-drafts/issues/7465>____
> on the edges · Issue #7465 · w3c/csswg-drafts
> (github.com)
>
> __ __
>
>
> Link to entry on the Chrome Platform Status____
>
> https://chromestatus.com/feature/5663795354533888
> <https://chromestatus.com/feature/5663795354533888>____
>
> __ __
>
>
> Links to previous Intent discussions____
>
> Intent to prototype:
> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/MN2PR00MB06691936F5BB8575F43A9704BC569%40MN2PR00MB0669.namprd00.prod.outlook.com <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/MN2PR00MB06691936F5BB8575F43A9704BC569%40MN2PR00MB0669.namprd00.prod.outlook.com>____
>
> __ __
>
> This intent message was generated by Chrome Platform
> Status <https://chromestatus.com/>.____
> This intent message was generated by Chrome Platform
>
> __ __
>
> --
> You received this message because you are subscribed
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> To unsubscribe from this group and stop receiving
> emails from it, send an email to
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> <mailto:blink-dev+...@chromium.org>.
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> You received this message because you are subscribed
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> To unsubscribe from this group and stop receiving
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> To view this discussion on the web visit
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>
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> To unsubscribe from this group and stop receiving emails from it, send
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> <mailto:blink-dev+...@chromium.org>.
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> You received this message because you are subscribed to the Google
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> To view this discussion on the web visit
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