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Don't close ancestor popovers when fullscreening #237

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merged 4 commits into from
May 7, 2024

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josepharhar
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@josepharhar josepharhar commented Jan 31, 2024

Without this patch, the fullscreening an element inside an open popover will make the fullscreen element display:none.

Issue: whatwg/html#9998
Corresponding HTML PR: whatwg/html#10116

(See WHATWG Working Mode: Changes for more details.)


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Without this patch, the fullscreening an element inside an open popover
will make the fullscreen element display:none.

Issue: whatwg/html#9998
Corresponding HTML PR: whatwg/html#10116
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This probably won't build until definitions are exported in whatwg/html#10116

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LGTM - seems to match Chromium impl, which seems to work.

chromium-wpt-export-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Feb 10, 2024
Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
{waiting for spec to land}

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
domenic pushed a commit to whatwg/html that referenced this pull request Mar 26, 2024
This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes #9998. See also whatwg/fullscreen#237.
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@keithamus does your firefox patch also do fullscreen or just dialogs? https://phabricator.services.mozilla.com/D200686

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mfreed7 commented Mar 26, 2024

Side-note, the equivalent changes landed yesterday in HTML for <dialog>.

chromium-wpt-export-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Mar 26, 2024
@keithamus
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@keithamus does your firefox patch also do fullscreen or just dialogs? https://phabricator.services.mozilla.com/D200686

Just dialogs. Want me to raise one for fullscreen too?

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@keithamus yes that would be great! then i can link to the bug in the OP

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(uh, popovers are causing troubles everywhere)

aarongable pushed a commit to chromium/chromium that referenced this pull request Mar 27, 2024
Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
https://groups.google.com/a/chromium.org/g/blink-dev/c/3vIL56MTgvw/m/W4hcWMblBAAJ

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5255819
Commit-Queue: Mason Freed <[email protected]>
Reviewed-by: Joey Arhar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1279321}
chromium-wpt-export-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Mar 27, 2024
Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
https://groups.google.com/a/chromium.org/g/blink-dev/c/3vIL56MTgvw/m/W4hcWMblBAAJ

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5255819
Commit-Queue: Mason Freed <[email protected]>
Reviewed-by: Joey Arhar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1279321}
chromium-wpt-export-bot pushed a commit to web-platform-tests/wpt that referenced this pull request Mar 28, 2024
Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
https://groups.google.com/a/chromium.org/g/blink-dev/c/3vIL56MTgvw/m/W4hcWMblBAAJ

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5255819
Commit-Queue: Mason Freed <[email protected]>
Reviewed-by: Joey Arhar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1279321}
rubberyuzu pushed a commit to rubberyuzu/html that referenced this pull request Apr 8, 2024
This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Apr 8, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Apr 8, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
moz-v2v-gh pushed a commit to mozilla/gecko-dev that referenced this pull request Apr 8, 2024
Automatic update from web-platform-tests
Ship NestedTopLayerSupport

Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
https://groups.google.com/a/chromium.org/g/blink-dev/c/3vIL56MTgvw/m/W4hcWMblBAAJ

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5255819
Commit-Queue: Mason Freed <[email protected]>
Reviewed-by: Joey Arhar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1279321}

--

wpt-commits: 5317488d13e2990de35a96e8fc3bf74fa7a2987b
wpt-pr: 44339
ErichDonGubler pushed a commit to erichdongubler-mozilla/firefox that referenced this pull request Apr 15, 2024
Automatic update from web-platform-tests
Ship NestedTopLayerSupport

Chromestatus:
https://chromestatus.com/feature/5149353645965312

Spec PRs:
whatwg/html#10116
whatwg/fullscreen#237

I2S:
https://groups.google.com/a/chromium.org/g/blink-dev/c/3vIL56MTgvw/m/W4hcWMblBAAJ

Fixed: 1520938
Change-Id: I04e5f217155658907988ed0a0557944dbffbf6f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5255819
Commit-Queue: Mason Freed <[email protected]>
Reviewed-by: Joey Arhar <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1279321}

--

wpt-commits: 5317488d13e2990de35a96e8fc3bf74fa7a2987b
wpt-pr: 44339
@josepharhar
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@foolip @domenic could I get a review of this? The corresponding HTML PR has been merged and I filled out the OP

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LGTM with nit I will fix while merging

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@domenic domenic merged commit 7af6ea3 into whatwg:main May 7, 2024
2 checks passed
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request May 13, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request May 20, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Jun 17, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Jun 25, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Aug 20, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
rubberyuzu added a commit to rubberyuzu/html that referenced this pull request Aug 27, 2024
Allow top layer elements to be nested within popovers

This allows top layer elements, including the dialog element, to be nested inside of an open popover, by not closing the popover when the new top layer element is opened. Without this patch, opening a modal dialog inside of a popover will make the page inert and make the dialog invisible.

Fixes whatwg#9998. See also whatwg/fullscreen#237.

Editorial: order of comparisons

For consistency:
- greater than or equal to
- less than or equal to

Improve element reflection

This attempts to make the following improvements:

1. Make it more clear that initializing attr is not the first step in an algorithm, but rather something that counts for all the list items.
2. Rewrite the associated element(s) fields as algorithms. As there are no downstream references so far this is a change we can still make.
3. Add another layer of caching that is separate from the FrozenArray to avoid having to compare a list of elements with a FrozenArray directly.

This helps with whatwg#10219.

Disable PageSwapEvent's activation on cross-origin redirects

Closes whatwg#10196.

Upstream Long Animation Frames monkey-patches

Long Animation Frames (https://w3c.github.io/long-animation-frames/) expects a few calls from HTML and other specs, for reporting when tasks, rendering or JS entry points take place. This moves those calls from the Long Animation Frames spec to HTML.

Preload: only allow certain values for as=""

Closes whatwg#8332.

Call the view transition page visibility change steps

This allows the CSS view-transitions spec to react to page visibility changes. Specifically, skip the active transition once a page is hidden.

See w3c/csswg-drafts#9543.

Style marquee using overflow: hidden

This matches Chromium and WebKit. Tests will be worked on in https://bugzilla.mozilla.org/show_bug.cgi?id=306344.

Editorial: export Element's innerText getter and setter steps

These will be used by Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

Add getHTML() and serializable shadow roots

Corresponding DOM PR: whatwg/dom#1256.

Closes whatwg#8867.

Co-authored-by: Domenic Denicola <[email protected]>

Make buttons respect display: none/contents in button layout

Fixes whatwg#10238. This matches what is already implemented in browsers.

Remove duplicate requirement for 'overflow' for marquee

The duplication was introduced by whatwg#10243.

Meta: make all the SVGs darkmode-aware

Also tag them as such, so that they don't get a white background after whatwg/whatwg.org#439 is merged.

Warn that the XML syntax is not recommended

Closes whatwg#10237.
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