ui: add TagInput component for nicknames
- Chip/tag style input for string arrays - Add/remove tags with Enter or comma - Backspace removes last tag when input empty - Supports label, error, maxTags, disabled 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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src/lib/components/ui/TagInput.svelte
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294
src/lib/components/ui/TagInput.svelte
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<svelte:options runes={true} />
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<script lang="ts">
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import { Label } from 'bits-ui'
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import Icon from '../Icon.svelte'
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interface Props {
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/** Array of tags */
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value?: string[]
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/** Label text */
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label?: string
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/** Placeholder text for the input */
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placeholder?: string
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/** Whether the field is disabled */
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disabled?: boolean
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/** Error message to display */
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error?: string
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/** Maximum number of tags allowed */
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maxTags?: number
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/** Additional CSS classes */
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class?: string
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/** Input id for label association */
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id?: string
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}
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let {
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value = $bindable([]),
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label,
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placeholder = 'Add tag...',
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disabled = false,
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error,
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maxTags,
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class: className = '',
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id
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}: Props = $props()
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let inputValue = $state('')
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let inputElement: HTMLInputElement | undefined = $state()
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const canAddMore = $derived(maxTags === undefined || value.length < maxTags)
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function addTag(tag: string) {
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const trimmed = tag.trim()
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if (trimmed && !value.includes(trimmed) && canAddMore) {
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value = [...value, trimmed]
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inputValue = ''
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}
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}
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function removeTag(index: number) {
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value = value.filter((_, i) => i !== index)
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}
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function handleKeydown(event: KeyboardEvent) {
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if (event.key === 'Enter' || event.key === ',') {
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event.preventDefault()
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addTag(inputValue)
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} else if (event.key === 'Backspace' && inputValue === '' && value.length > 0) {
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removeTag(value.length - 1)
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}
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}
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function handleBlur() {
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if (inputValue.trim()) {
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addTag(inputValue)
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}
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}
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function focusInput() {
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inputElement?.focus()
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}
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</script>
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{#if label || error}
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<fieldset class="fieldset {className}">
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{#if label}
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<Label.Root class="label" for={id}>
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{label}
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</Label.Root>
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{/if}
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<div
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class="tagInput"
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class:disabled
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class:hasError={!!error}
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onclick={focusInput}
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onkeydown={(e) => e.key === 'Enter' && focusInput()}
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role="button"
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tabindex="-1"
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>
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{#each value as tag, index}
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<span class="tag">
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<span class="tagText">{tag}</span>
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<button
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type="button"
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class="removeTag"
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onclick={() => removeTag(index)}
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{disabled}
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aria-label="Remove {tag}"
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>
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<Icon name="close" size={12} />
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</button>
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</span>
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{/each}
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{#if canAddMore}
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<input
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bind:this={inputElement}
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bind:value={inputValue}
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type="text"
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{placeholder}
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{disabled}
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{id}
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onkeydown={handleKeydown}
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onblur={handleBlur}
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class="input"
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/>
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{/if}
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</div>
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{#if error}
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<span class="error">{error}</span>
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{/if}
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</fieldset>
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{:else}
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<div
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class="tagInput {className}"
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class:disabled
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onclick={focusInput}
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onkeydown={(e) => e.key === 'Enter' && focusInput()}
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role="button"
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tabindex="-1"
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>
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{#each value as tag, index}
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<span class="tag">
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<span class="tagText">{tag}</span>
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<button
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type="button"
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class="removeTag"
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onclick={() => removeTag(index)}
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{disabled}
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aria-label="Remove {tag}"
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>
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<Icon name="close" size={12} />
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</button>
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</span>
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{/each}
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{#if canAddMore}
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<input
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bind:this={inputElement}
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bind:value={inputValue}
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type="text"
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{placeholder}
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{disabled}
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{id}
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onkeydown={handleKeydown}
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onblur={handleBlur}
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class="input"
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/>
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{/if}
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</div>
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{/if}
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<style lang="scss">
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@use '$src/themes/spacing' as *;
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@use '$src/themes/colors' as *;
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@use '$src/themes/typography' as *;
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@use '$src/themes/layout' as *;
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@use '$src/themes/mixins' as *;
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@use '$src/themes/effects' as *;
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.fieldset {
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display: flex;
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flex-direction: column;
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gap: $unit-half;
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border: none;
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padding: 0;
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margin: 0;
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:global(.label) {
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color: var(--text-primary);
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font-size: $font-small;
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font-weight: $medium;
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margin-bottom: $unit-half;
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}
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.error {
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color: $error;
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font-size: $font-small;
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padding: $unit-half $unit-2x;
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min-width: 100%;
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margin-bottom: $unit;
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width: 0;
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}
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}
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.tagInput {
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display: flex;
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flex-wrap: wrap;
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align-items: center;
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gap: $unit-half;
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padding: $unit $unit-2x;
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min-height: calc($unit * 5.5);
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background-color: var(--input-bg);
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border-radius: $input-corner;
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border: 2px solid transparent;
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cursor: text;
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@include smooth-transition($duration-quick, background-color, border-color);
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&:hover:not(.disabled) {
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background-color: var(--input-bg-hover);
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}
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&:focus-within {
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border-color: $blue;
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}
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&.disabled {
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opacity: 0.5;
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cursor: not-allowed;
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}
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&.hasError {
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border-color: $error;
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}
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}
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.tag {
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display: inline-flex;
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align-items: center;
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gap: $unit-fourth;
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padding: $unit-fourth $unit;
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background-color: var(--tag-bg);
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color: var(--tag-text);
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border-radius: calc($input-corner / 2);
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font-size: $font-small;
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line-height: 1.4;
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max-width: 100%;
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.tagText {
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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.removeTag {
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display: flex;
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align-items: center;
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justify-content: center;
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padding: 0;
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margin: 0;
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background: none;
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border: none;
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cursor: pointer;
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color: inherit;
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opacity: 0.7;
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flex-shrink: 0;
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@include smooth-transition($duration-quick, opacity);
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&:hover:not(:disabled) {
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opacity: 1;
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}
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&:disabled {
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cursor: not-allowed;
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}
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:global(svg) {
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fill: currentColor;
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}
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}
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}
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.input {
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flex: 1;
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min-width: 80px;
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border: none;
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background: transparent;
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color: var(--text-primary);
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font-size: $font-regular;
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font-family: inherit;
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padding: $unit-fourth 0;
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outline: none;
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&::placeholder {
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color: var(--text-tertiary);
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}
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&:disabled {
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cursor: not-allowed;
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}
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}
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</style>
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