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fix(material/expansion): able to tab into descendants with visibility while closed #24045

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Mar 8, 2022

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@crisbeto crisbeto commented Dec 2, 2021

The expansion panel sets visibility: hidden while it's closed in order to prevent users from tabbing into the content. This breaks down if a child has its own visibility, because it overrides the one coming from the parent. We can't use display in the animation definition, because it prevents the animations module from calculating the height when animating.

These changes add some CSS that will set display: none once the animation has settled.

@crisbeto crisbeto added P3 An issue that is relevant to core functions, but does not impede progress. Important, but not urgent G This is is related to a Google internal issue target: patch This PR is targeted for the next patch release labels Dec 2, 2021
@crisbeto crisbeto requested a review from jelbourn December 2, 2021 09:27
@google-cla google-cla bot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Dec 2, 2021
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kseamon commented Dec 2, 2021

LGTM

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LGTM

@jelbourn jelbourn added the action: merge The PR is ready for merge by the caretaker label Dec 2, 2021
@andrewseguin andrewseguin removed the cla: yes PR author has agreed to Google's Contributor License Agreement label Dec 28, 2021
@crisbeto crisbeto force-pushed the expansion-panel-display branch from d7afb2b to 5a19a24 Compare March 8, 2022 12:58
@crisbeto crisbeto requested a review from andrewseguin as a code owner March 8, 2022 12:58
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crisbeto commented Mar 8, 2022

I ended up reworking this a bit. The display: none caused some internal failures, because the content inside the expansion panel determines the width. I worked around it with * { visibility: hidden !important }.

… while closed

The expansion panel sets `visibility: hidden` while it's closed in order to prevent users from tabbing into the content. This breaks down if a child has its own `visibility`, because it overrides the one coming from the parent. We can't use `display` in the animation definition, because it prevents the animations module from calculating the height when animating.

These changes add some CSS that will set `display: none` once the animation has settled.
@crisbeto crisbeto force-pushed the expansion-panel-display branch from 5a19a24 to b15f33b Compare March 8, 2022 13:01
@crisbeto crisbeto merged commit c12347c into angular:master Mar 8, 2022
crisbeto added a commit that referenced this pull request Mar 8, 2022
… while closed (#24045)

The expansion panel sets `visibility: hidden` while it's closed in order to prevent users from tabbing into the content. This breaks down if a child has its own `visibility`, because it overrides the one coming from the parent. We can't use `display` in the animation definition, because it prevents the animations module from calculating the height when animating.

These changes add some CSS that will set `display: none` once the animation has settled.

(cherry picked from commit c12347c)
crapStone pushed a commit to Calciumdibromid/CaBr2 that referenced this pull request Mar 18, 2022
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@angular/cdk](https://github.com/angular/components) | dependencies | patch | [`13.2.5` -> `13.2.6`](https://renovatebot.com/diffs/npm/@angular%2fcdk/13.2.5/13.2.6) |
| [@angular/material](https://github.com/angular/components) | dependencies | patch | [`13.2.5` -> `13.2.6`](https://renovatebot.com/diffs/npm/@angular%2fmaterial/13.2.5/13.2.6) |

---

### Release Notes

<details>
<summary>angular/components</summary>

### [`v13.2.6`](https://github.com/angular/components/blob/HEAD/CHANGELOG.md#&#8203;1326-suede-spaghetti-2022-03-09)

[Compare Source](angular/components@13.2.5...13.2.6)

##### cdk

| Commit | Type | Description |
| -- | -- | -- |
| [39929a815d](angular/components@39929a8) | fix | **overlay:** backdrop timeouts not being cleared in some cases ([#&#8203;23972](angular/components#23972)) |
| [2f2b0c7cf4](angular/components@2f2b0c7) | fix | **testing:** dispatch mouseover and mouseout events in UnitTestElement ([#&#8203;24490](angular/components#24490)) |
| [edca54f2d0](angular/components@edca54f) | fix | **testing:** require at least one argument for locator functions ([#&#8203;23619](angular/components#23619)) |

##### material

| Commit | Type | Description |
| -- | -- | -- |
| [c4993ac171](angular/components@c4993ac) | fix | **button:** avoid setting a tabindex on all link buttons ([#&#8203;22901](angular/components#22901)) |
| [c47d30e0e5](angular/components@c47d30e) | fix | **dialog:** don't wait for animation before moving focus ([#&#8203;24121](angular/components#24121)) |
| [70b8248568](angular/components@70b8248) | fix | **expansion:** able to tab into descendants with visibility while closed ([#&#8203;24045](angular/components#24045)) |
| [d22d73ab8d](angular/components@d22d73a) | fix | **select:** disabled state out of sync when swapping form group with a disabled one ([#&#8203;17872](angular/components#17872)) |
| [911d6b71d4](angular/components@911d6b7) | fix | **slide-toggle:** clear name from host node ([#&#8203;15505](angular/components#15505)) |
| [4b5363d160](angular/components@4b5363d) | fix | **tooltip:** decouple removal logic from change detection ([#&#8203;19432](angular/components#19432)) |

##### material-experimental

| Commit | Type | Description |
| -- | -- | -- |
| [8414646d79](angular/components@8414646) | fix | **mdc-card:** remove extra margin if header doesn't have an avatar ([#&#8203;19072](angular/components#19072)) |
| [f66486dc5b](angular/components@f66486d) | fix | **mdc-slider:** fix a few null pointer exceptions ([#&#8203;23659](angular/components#23659)) |

##### multiple

| Commit | Type | Description |
| -- | -- | -- |
| [6ee0089ce6](angular/components@6ee0089) | fix | don't block child component animations on open ([#&#8203;24529](angular/components#24529)) |

#### Special Thanks

Andrew Seguin, Jeri Peier, Kristiyan Kostadinov and Paul Gschwendtner

<!-- CHANGELOG SPLIT MARKER -->

</details>

---

### Configuration

📅 **Schedule**: At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about these updates again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1214
Reviewed-by: Epsilon_02 <epsilon_02@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
forsti0506 pushed a commit to forsti0506/components that referenced this pull request Apr 3, 2022
… while closed (angular#24045)

The expansion panel sets `visibility: hidden` while it's closed in order to prevent users from tabbing into the content. This breaks down if a child has its own `visibility`, because it overrides the one coming from the parent. We can't use `display` in the animation definition, because it prevents the animations module from calculating the height when animating.

These changes add some CSS that will set `display: none` once the animation has settled.
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