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<script lang="ts">
import { matchItems, type FuzzyItem } from './fuzzy-search';
type Item = FuzzyItem;
type Props = {
items: Item[];
placeholder?: string;
/** The current input text; bind to keep the parent in sync. */
value?: string;
/** Called when the user selects an option. */
onselect?: (item: Item) => void;
};
let {
items,
placeholder = 'Rechercher…',
value = $bindable(''),
onselect,
}: Props = $props();
let open = $state(false);
let active = $state(0); // index into results
let inputRef: HTMLInputElement;
const results = $derived(matchItems(items, value));
// Keep the highlighted row within bounds when the list shrinks.
$effect(() => {
if (active >= results.length) active = Math.max(0, results.length - 1);
});
function choose(item: Item) {
value = '';
open = false;
onselect?.(item);
inputRef?.focus();
}
function onKeydown(e: KeyboardEvent) {
if (e.key === 'Escape') {
open = false;
active = 0;
return;
}
if (!open || results.length === 0) {
if (e.key === 'Enter') {
// fallback: commit the raw text as a new/free-form entry
onselect?.({ id: 0, name: value.trim() });
}
return;
}
if (e.key === 'ArrowDown') {
e.preventDefault();
active = (active + 1) % results.length;
} else if (e.key === 'ArrowUp') {
e.preventDefault();
active = (active - 1 + results.length) % results.length;
} else if (e.key === 'Enter') {
e.preventDefault();
const pick = results[active];
if (pick) choose(pick.obj);
}
}
</script>
<div class="autocomplete">
<input
bind:this={inputRef}
class="form-input"
type="text"
bind:value
{placeholder}
autocomplete="off"
role="combobox"
aria-expanded={open}
aria-controls="autocomplete-list"
aria-autocomplete="list"
oninput={() => {
open = true;
}}
onkeydown={onKeydown}
onfocus={() => {
open = true;
}}
onblur={() => {
// hide after a tick so click on an option still registers
setTimeout(() => {
open = false;
}, 150);
}}
/>
{#if open && results.length > 0}
<ul class="dropdown" role="listbox" id="autocomplete-list">
{#each results as r, i (r.obj.id)}
<li
role="option"
aria-selected={active === i}
class:active={active === i}
onmousedown={(e) => {
e.preventDefault(); // keep focus on input
choose(r.obj);
}}
>
<span class="name">{@html r.highlight('<mark>', '</mark>')}</span>
</li>
{/each}
</ul>
{/if}
</div>
<style>
.autocomplete {
position: relative;
flex: 1;
min-width: 0;
}
.autocomplete :global(.form-input) {
width: 100%;
background: var(--surface);
}
.dropdown {
position: absolute;
top: calc(100% + 0.25rem);
left: 0;
right: 0;
list-style: none;
margin: 0;
padding: 0.25rem;
background: var(--surface);
border: 1px solid var(--border);
border-radius: 0.75rem;
box-shadow: 0 4px 12px var(--shadow-accent);
z-index: 20;
max-height: 16rem;
overflow-y: auto;
}
.dropdown li {
padding: 0.5rem 0.625rem;
border-radius: 0.5rem;
cursor: pointer;
display: flex;
align-items: center;
justify-content: space-between;
gap: 0.5rem;
}
.dropdown li:hover,
.dropdown li.active {
background: var(--surface-hover);
}
.name :global(mark) {
background: transparent;
color: var(--accent);
font-weight: 700;
}
</style>
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