var(--anchor-max-height) when using the anchor prop (#3148)
* use `var(--anchor-max-height)` if available
When using the `anchor` prop, we try to position the anchored element
within the viewport. We use the size middleware of Floating UI to ensure
we are working in a constrained `max-width` and `max-height`.
However, if you want to limit the height of let's say a
`ComboboxOptions` then you instinctively add `max-h-60` for example. The
problem is that the `max-height` set by Floating UI will win because
it's inline styles.
You could use `!max-h-60` which makes it `!important`, but then you can
run into an issue where the max height set by the user is larger than
the available space which results in combobox options that are
unavailable.
To solve this, we want best of both worlds by ensuring we prefer the
size from the user, but constrain it with the value we know.
We now read from a `var(--anchor-max-height)` variable where you can set
your own preferred max height.
E.g.:
```ts
<Combobox>
<ComboboxInput />
<ComboboxOptions anchor="bottom start" className="[--anchor-gap:var(--spacing-4)] [--anchor-max-height:var(--spacing-60)]">
…
</ComboboxOptions>
</Combobox>
```
* update changelog
Headless UI
A set of completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS.
Documentation
For full documentation, visit headlessui.com.
Installing the latest version
You can install the latest version by using:
npm install @headlessui/react@latestnpm install @headlessui/vue@latest
Installing the insiders version
You can install the insiders version (which points to whatever the latest commit on the main branch is) by using:
npm install @headlessui/react@insidersnpm install @headlessui/vue@insiders
Note: The insiders build doesn't follow semver and therefore doesn't guarantee that the APIs will be the same once they are released.
Packages
| Name | Version | Downloads |
|---|---|---|
@headlessui/react |
||
@headlessui/vue |
||
@headlessui/tailwindcss |
Community
For help, discussion about best practices, or any other conversation that would benefit from being searchable:
For casual chit-chat with others using the library:
Join the Tailwind CSS Discord Server
Contributing
If you're interested in contributing to Headless UI, please read our contributing docs before submitting a pull request.