feat(toc,explorer): add accessibility for toggle (#1327)

* Restore focus highlight on explorer toggle button.

Remove `unset: all` declaration causing `outline`
property to be unset. This allows the default
browser focus highlight to be shown.

* Fix semantics of expandable sections (explorer, toc).

This adds the appropriate aria attributes for the [disclosure pattern](https://www.w3.org/WAI/ARIA/apg/patterns/disclosure/examples/disclosure-image-description/#javascriptandcsssourcecode) and uses `visibility: hidden` to remove the hidden elements from the focus order without disrupting the animations. Further work is needed on the tree view nodes.

* Run prettier for SCSS files.
This commit is contained in:
Andrew
2024-08-08 21:07:47 -04:00
committed by GitHub
parent 12904ab796
commit 27a41abb62
6 changed files with 39 additions and 4 deletions

View File

@ -1,7 +1,6 @@
@use "../../styles/variables.scss" as *;
button#explorer {
all: unset;
background-color: transparent;
border: none;
text-align: left;
@ -46,8 +45,18 @@ button#explorer {
list-style: none;
overflow: hidden;
max-height: none;
transition: max-height 0.35s ease;
transition:
max-height 0.35s ease,
visibility 0s linear 0s;
margin-top: 0.5rem;
visibility: visible;
&.collapsed {
transition:
max-height 0.35s ease,
visibility 0s linear 0.35s;
visibility: hidden;
}
&.collapsed > .overflow::after {
opacity: 0;