/*
Copyright 2025 Google LLC
Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
you may not use this file except in compliance with the License .
You may obtain a copy of the License at
https : //www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing , software
distributed under the License is distributed on an " AS IS " BASIS ,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
See the License for the specific language governing permissions and
limitations under the License .
*/
import { html, css, nothing } from "lit" ;
import { customElement, property } from "lit/decorators.js" ;
import { Root } from "./root.js" ;
import { classMap } from "lit/directives/class-map.js" ;
import { styleMap } from "lit/directives/style-map.js" ;
import { structuralStyles } from "./styles.js" ;
@customElement("a2ui-list" )
export class List extends Root {
@property({ reflect: true , type: String })
accessor direction: "vertical" | "horizontal" = "vertical" ;
static styles = [
structuralStyles,
css`
* {
box-sizing: border-box;
}
:host {
display: block;
flex: var (--weight);
min-height: 0 ;
overflow: auto;
}
:host([direction="vertical" ]) section {
display: grid;
}
:host([direction="horizontal" ]) section {
display: flex;
max-width: 100 %;
overflow-x: scroll;
overflow-y: hidden;
scrollbar-width: none;
> ::slotted(*) {
flex: 1 0 fit-content;
max-width: min(80 %, 400 px);
}
}
`,
];
render() {
return html`<section
class =${classMap(this .theme.components.List)}
style=${this .theme.additionalStyles?.List
? styleMap(this .theme.additionalStyles?.List)
: nothing}
>
<slot></slot>
</section>`;
}
}
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