- From: Chris Harrelson via GitHub <sysbot+gh@w3.org>
- Date: Wed, 26 Jan 2022 17:22:54 +0000
- To: public-css-archive@w3.org
Here's some accessibility prior art, via @aleventhal.
Chromium [already implements an IsVisible](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/accessibility/ax_object.cc;l=2688?q=ax_object.cc&ss=chromium) value on accessibility objects internally, and exposes it to AT tools directly.
The implementation is equivalent to the pseudocode below. The difference between this and my proposal above is that it checks for aria-hidden and inert.
```
isVisible() {
return !isHiddenViaStyle() && !IsAriaHidden() && !IsInert();
}
isHiddenViaStyle() {
return isDisplayNone() || isVisibilityHidden() || isContentVisibilityHidden() // *not* content-visibility: auto
}
isVisibilityHidden() {
return computedStyleOfElementIsVisibiltyHidden()
}
isAriaHidden() {
return selfOrAncestorHasAriaHidden()
}
isInert() {
return selfOrAncestorIsInert()
}
```
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Received on Wednesday, 26 January 2022 17:22:55 UTC