mirror of
https://github.com/carbon-design-system/carbon-components-svelte.git
synced 2025-09-20 12:23:02 +00:00
340 lines
8.6 KiB
Svelte
340 lines
8.6 KiB
Svelte
<script>
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/**
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* @typedef {any} AutoCompleteItemId
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* @typedef {string} AutoCompleteItemText
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* @typedef {{ id: AutoCompleteItemId; text: AutoCompleteItemText; }} AutoCompleteItem
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* @event {{ selectedId: AutoCompleteItemId, selectedItem: AutoCompleteItem }} select
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* @slot {{ item: AutoCompleteItem; index: number; }}
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*/
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/**
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* Set the dropdown items
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* @type {AutoCompleteItem[]}
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*/
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export let items = [];
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export let filteredItems = [];
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/**
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* Override the display of a dropdown item
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* @type {(item: AutoCompleteItem) => string}
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*/
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export let itemToString = (item) => item.text || item.id;
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/**
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* Specify the selected item id
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* @type {AutoCompleteItemId}
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*/
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export let selectedId = undefined;
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/**
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* Specify the selected item
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* @type {AutoCompleteItem}
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*/
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export let selectedItem = undefined;
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/**
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* Specify the type of dropdown
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* @type {"default" | "inline"}
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*/
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export let type = "default";
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/**
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* Specify the direction of the dropdown menu
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* @type {"bottom" | "top"}
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*/
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export let direction = "bottom";
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/**
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* Specify the size of the dropdown field
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* @type {"sm" | "lg" | "xl"}
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*/
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export let size = undefined;
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/** Set to `true` to open the dropdown */
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export let open = false;
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/** Set to `true` to use the inline variant */
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export let inline = false;
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/** Set to `true` to enable the light variant */
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export let light = false;
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/** Set to `true` to disable the dropdown */
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export let disabled = false;
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/** Specify the title text */
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export let titleText = "";
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/** Set to `true` to indicate an invalid state */
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export let invalid = false;
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/** Specify the invalid state text */
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export let invalidText = "";
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/** Set to `true` to indicate an warning state */
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export let warn = false;
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/** Specify the warning state text */
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export let warnText = "";
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/** Specify the helper text */
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export let helperText = "";
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/** Set to `true` to visually hide the label text */
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export let hideLabel = false;
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/**
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* Override the default translation ids
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* @type {(id: any) => string}
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*/
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export let translateWithId = undefined;
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/** Set an id for the list box component */
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export let id = "ccs-" + Math.random().toString(36);
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/**
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* Specify a name attribute for the list box
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* @type {string}
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*/
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export let name = undefined;
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/** Obtain a reference to the button HTML element */
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export let ref = null;
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/** Specify the placeholder text */
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export let placeholder = null;
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import { createEventDispatcher } from "svelte";
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import WarningFilled from "../icons/WarningFilled.svelte";
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import WarningAltFilled from "../icons/WarningAltFilled.svelte";
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import { ListBox, ListBoxMenu, ListBoxMenuItem } from "../ListBox";
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const dispatch = createEventDispatcher();
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let highlightedIndex = -1;
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let innerValue = undefined;
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function change(dir) {
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let index = highlightedIndex + dir;
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if (index < 0) {
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index = filteredItems.length - 1;
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} else if (index >= filteredItems.length) {
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index = 0;
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}
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highlightedIndex = index;
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}
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function onKeydown(event) {
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let key = event.key;
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if (["Enter", "ArrowDown", "ArrowUp"].includes(key)) {
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event.preventDefault();
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}
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if (key === "Enter") {
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open = !open;
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if (
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highlightedIndex > -1 &&
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filteredItems[highlightedIndex].id !== selectedId
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) {
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selectedItem = filteredItems[highlightedIndex];
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selectedId = selectedItem.id;
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innerValue = selectedItem.text;
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open = false;
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}
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} else if (key === "Backspace") {
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selectedItem = undefined;
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selectedId = undefined;
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open = innerValue.length > 0 && filteredItems.length > 0;
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} else if (key === "Tab") {
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open = false;
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ref.blur();
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} else if (key === "ArrowDown") {
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change(1);
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} else if (key === "ArrowUp") {
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change(-1);
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} else if (key === "Escape") {
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innerValue = "";
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dispatch("clear");
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open = false;
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} else {
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if (!open) open = filteredItems.length > 0;
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}
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}
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$: if (selectedId !== undefined) {
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dispatch("select", { selectedId, selectedItem });
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}
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$: filteredItems = items.filter(
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(item) => innerValue?.length > 0 && item.text.startsWith(innerValue)
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);
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$: inline = type === "inline";
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$: if (!open) {
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highlightedIndex = -1;
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}
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</script>
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<svelte:window
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on:click="{({ target }) => {
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if (open && ref && !ref.contains(target)) {
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open = false;
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}
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}}"
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/>
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<div {...$$restProps}>
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{#if titleText}
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<label
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for="{id}"
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class:bx--label="{true}"
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class:bx--label--disabled="{disabled}"
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class:bx--visually-hidden="{hideLabel}"
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>
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{titleText}
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</label>
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{/if}
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<ListBox
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type="{type}"
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size="{size}"
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id="{id}"
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name="{name}"
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aria-label="{$$props['aria-label']}"
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class="bx--dropdown {direction === 'top' && 'bx--list-box--up'} {invalid &&
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'bx--dropdown--invalid'} {!invalid &&
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warn &&
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'bx--dropdown--warning'} {open && 'bx--dropdown--open'}
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{size === 'sm' && 'bx--dropdown--sm'}
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{size === 'xl' && 'bx--dropdown--xl'}
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{inline && 'bx--dropdown--inline'}
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{disabled && 'bx--dropdown--disabled'}
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{light && 'bx--dropdown--light'}"
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on:click="{({ target }) => {
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if (disabled) return;
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open = ref.contains(target) ? !open : false;
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}}"
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disabled="{disabled}"
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open="{open}"
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invalid="{invalid}"
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invalidText="{invalidText}"
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light="{light}"
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warn="{warn}"
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warnText="{warnText}"
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>
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{#if invalid}
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<WarningFilled class="bx--text-input__invalid-icon" />
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{/if}
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{#if !invalid && warn}
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<WarningAltFilled
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class="bx--text-input__invalid-icon
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bx--text-input__invalid-icon--warning"
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/>
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{/if}
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<input
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bind:this="{ref}"
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bind:value="{innerValue}"
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type="text"
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role="searchbox"
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class="
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auto-complete__input
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{size === 'sm' && 'auto-complete__input--sm'}
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{size === 'xl' && 'auto-complete__input--xl'}
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"
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autocomplete="false"
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disabled="{disabled}"
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id="{id}"
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name="{name}"
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placeholder="{placeholder}"
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translateWithId="{translateWithId}"
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{...$$restProps}
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on:change
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on:focus
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on:blur
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on:input
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on:keydown="{onKeydown}"
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/>
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{#if open}
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<ListBoxMenu aria-labelledby="{id}" id="{id}">
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{#each filteredItems as item, i (item.id)}
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<ListBoxMenuItem
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id="{item.id}"
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active="{selectedId === item.id}"
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highlighted="{highlightedIndex === i || selectedId === item.id}"
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on:click="{() => {
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selectedItem = item;
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selectedId = item.id;
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innerValue = item.text;
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ref.focus();
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}}"
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on:mouseenter="{() => {
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highlightedIndex = i;
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}}"
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>
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<slot item="{item}" index="{i}">
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{itemToString(item)}
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</slot>
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</ListBoxMenuItem>
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{/each}
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</ListBoxMenu>
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{/if}
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</ListBox>
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{#if !inline && !invalid && !warn && helperText}
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<div
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class:bx--form__helper-text="{true}"
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class:bx--form__helper-text--disabled="{disabled}"
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>
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{helperText}
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</div>
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{/if}
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</div>
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<style>
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.auto-complete__input {
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font-size: var(--cds-body-short-01-font-size, 0.875rem);
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font-weight: var(--cds-body-short-01-font-weight, 400);
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line-height: var(--cds-body-short-01-line-height, 1.28572);
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letter-spacing: var(--cds-body-short-01-letter-spacing, 0.16px);
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outline: 2px solid transparent;
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outline-offset: -2px;
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width: 100%;
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height: 2.5rem;
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padding: 0 1rem;
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border: none;
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border-bottom-color: currentcolor;
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border-bottom-style: none;
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border-bottom-width: medium;
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border-bottom: 1px solid var(--cds-ui-04, #8d8d8d);
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background-color: var(--cds-field-01, #f4f4f4);
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color: var(--cds-text-01, #161616);
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transition: background-color 70ms cubic-bezier(0.2, 0, 0.38, 0.9),
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outline 70ms cubic-bezier(0.2, 0, 0.38, 0.9);
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}
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.auto-complete__input:focus {
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outline: 2px solid var(--cds-focus, #0f62fe);
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outline-offset: -2px;
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}
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.auto-complete__input--sm {
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height: 2rem;
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}
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.auto-complete__input--xl,
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.auto-complete__input--lg {
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height: 3rem;
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}
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.auto-complete__input:disabled {
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outline: 2px solid transparent;
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outline-offset: -2px;
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border-bottom: 1px solid transparent;
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background-color: var(--cds-field, #f4f4f4);
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color: var(--cds-text-disabled, #c6c6c6);
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cursor: not-allowed;
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-webkit-text-fill-color: var(--cds-disabled-02, #c6c6c6);
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}
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</style>
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