Attachment
A file or an image, its metadata, its upload state and its actions — all of it one data attribute and some CSS.
src/components/rahti_ui/attachment.rs
Usage
A file, its metadata, and a button to take it away.
shadcn's Usage example: a media well, a name, some metadata and one action. The card has no width of its own beyond w-fit, so every example on this page gives it one — which is what shadcn's own demos do too.
The card's padding comes from what is inside it. `has-data-[slot=attachment-content]:px-2.5` and its media counterpart mean a card with a caption is padded differently from one with only a thumbnail, and neither has to be told which it is.
Image
A thumbnail above its caption, with the action floating over it.
variant="image" on the media well and orientation="vertical" on the card. The thumbnail fills the well and crops to a square; the caption sits under it, and the remove button leaves the flow to float over the top corner.
A vertical card is w-24 — widened to w-30 when there is a caption, again through a has-data rule rather than a prop.
States
idle, uploading, processing, error, done.
Five states, one data-state on the card, and six rules across three other parts reading it: a dashed border while idle, a shimmering title while uploading or processing, and a destructive border, media and caption on error. Not one of them is a prop on the part it changes.
The shimmer is a gradient clipped to the text and swept across it — a utility from shadcn's own tailwind.css, copied into globals.css beside scroll-fade. It is CSS, so it keeps running with JavaScript switched off.
Look at the error card's caption rather than its colour. The state is a destructive treatment, and shadcn's accessibility note asks for the reason to be in the description so the meaning is not carried by colour alone.
Sizes
default, sm and xs — and the one place the layers had to be rearranged.
Three sizes. Each one sets the gap, the type scale and the padding, and the media well shrinks itself by reading the card's data-size — 40px, 32px, 28px, with a smaller radius and a smaller icon at xs.
xs is also the reason this port moves the radius off the base string and onto each size. shadcn's base says rounded-2xl and xs says rounded-xl, which twMerge resolves; a plain join would leave both in and let stylesheet order pick — and it would pick the wrong one. An audit test proves the redistribution renders the same set for all six size-by-orientation combinations.
Group
A scrolling, snapping row with an edge fade.
Scroll it sideways. The near edge stays crisp and the far edge dissolves — scroll-fade-x, a mask driven by a scroll timeline with no listener behind it — and there is no scrollbar under the row. The snapping is the platform's.
These cards are presentational: no trigger, no actions, so nothing in the row takes focus and a keyboard user could not reach the ones off-screen. shadcn's answer is to make the row itself focusable, which is the tabindex, role and aria-label this one carries. A row of cards with a trigger needs none of it.
Trigger
A full-card overlay that leaves the actions clickable.
Hover the first card: the whole thing lights up and the whole thing is a link. Then tab through it — the link and the remove button are two separate focus stops, and clicking the button does not follow the link.
That is one layer of z-index and nothing else. The trigger is absolute inset-0 z-10 and the action row is relative z-20, so the overlay covers the card and the actions sit above it. No JavaScript decides which one was clicked.
The trigger has no text, so give it an aria_label saying what activating it does. render="a" makes it a link and takes an href; leave it out and it is a real button with type="button", ready for a Dialog trigger or a handler.
Accessibility
Labelled actions, and a reason that is not a colour.
Both actions are icon-only, so both carry a label naming the action and its target — "Remove pipeline.log", not "Remove". shadcn asks for the target because a list of six cards otherwise announces six identical buttons.
And the failure reason is in the description, not only in the colour. That is the whole of shadcn's meaning-beyond-colour note for this component, and it is the one thing the component cannot do for a caller.
The port
What moved, what did not, and why.