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feat: Implement Material 3 carousel component #114

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feat: Implement Material 3 carousel component #114

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4 changes: 4 additions & 0 deletions all.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ import './buttons/button.js'
import './buttons/filled-tonal-button.js'
import './buttons/outlined-button.js'
import './buttons/text-button.js'
import './carousel/carousel.js'
import './carousel/carousel-item.js'
import './checkbox/checkbox.js'
import './chips/assist-chip.js'
import './chips/chip-set.js'
Expand Down Expand Up @@ -48,6 +50,8 @@ import './text/text-field.js'
// LINT.IfChange(exports)
// go/keep-sorted start
export * from './buttons/button.js'
export * from './carousel/carousel.js'
export * from './carousel/carousel-item.js'
export * from './checkbox/checkbox.js'
export * from './chips/chip.js'
export * from './chips/chip-set.js'
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27 changes: 27 additions & 0 deletions carousel/carousel-item.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
import { LitElement, html, css } from 'lit'

export class CarouselItem extends LitElement {
constructor() {
super()
this.internals = this.attachInternals()
this.internals.role = 'listitem'
}

static styles = [
css`
:host {
display: flex;
flex-shrink: 0;
scroll-snap-align: start;
border-radius: var(--md-carousel-item-shape, 28px);
overflow: hidden;
}
`,
]

render() {
return html`<slot></slot>`
}
}

customElements.define('md-carousel-item', CarouselItem)
32 changes: 32 additions & 0 deletions carousel/carousel.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,32 @@
import { LitElement, html, css } from 'lit'

export class Carousel extends LitElement {
constructor() {
super()
this.internals = this.attachInternals()
this.internals.role = 'list'
Comment on lines +6 to +7
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@gemini-code-assist gemini-code-assist Bot May 12, 2026

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high

The carousel container is scrollable but lacks keyboard focusability, which prevents users who rely on arrow keys from navigating the content. Additionally, explicitly setting the aria-orientation helps assistive technologies correctly interpret the component's layout.

    this.internals = this.attachInternals()
    this.internals.role = 'list'
    this.internals.ariaOrientation = 'horizontal'
    this.tabIndex = 0

}

static styles = [
css`
:host {
display: flex;
overflow-x: auto;
scroll-snap-type: x mandatory;
scrollbar-width: none; /* Firefox */
gap: var(--md-carousel-gap, 8px);
padding: var(--md-carousel-padding, 16px);
}

:host::-webkit-scrollbar {
display: none; /* Safari and Chrome */
}
`,
]

render() {
return html`<slot></slot>`
}
}

customElements.define('md-carousel', Carousel)
4 changes: 4 additions & 0 deletions common.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,8 @@
* for production.
*/
import './buttons/button.js'
import './carousel/carousel.js'
import './carousel/carousel-item.js'
import './checkbox/checkbox.js'
import './chips/chip.js'
import './chips/chip-set.js'
Expand All @@ -27,6 +29,8 @@ import './tabs/tabs.js'
import './text/text-field.js'

export * from './buttons/button.js'
export * from './carousel/carousel.js'
export * from './carousel/carousel-item.js'
export * from './checkbox/checkbox.js'
export * from './chips/chip.js'
export * from './chips/chip-set.js'
Expand Down