/*
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 { StringValue, BooleanValue } from "../types/primitives" ;
import { classMap } from "lit/directives/class-map.js" ;
import { A2uiMessageProcessor } from "../data/model-processor.js" ;
import { styleMap } from "lit/directives/style-map.js" ;
import { structuralStyles } from "./styles.js" ;
@customElement("a2ui-checkbox" )
export class Checkbox extends Root {
@property()
accessor value: BooleanValue | null = null ;
@property()
accessor label: StringValue | null = null ;
static styles = [
structuralStyles,
css`
* {
box-sizing: border-box;
}
:host {
display: block;
flex: var (--weight);
min-height: 0 ;
overflow: auto;
}
input {
display: block;
width: 100 %;
}
.description {
font-size: 14 px;
margin-bottom: 4 px;
}
`,
];
#setBoundValue(value: string) {
if (!this .value || !this .processor) {
return ;
}
if (!("path" in this .value)) {
return ;
}
if (!this .value.path) {
return ;
}
this .processor.setData(
this .component,
this .value.path,
value,
this .surfaceId ?? A2uiMessageProcessor.DEFAULT_SURFACE_ID
);
}
#renderField(value: boolean | number) {
return html` <section
class =${classMap(this .theme.components.CheckBox.container)}
style=${this .theme.additionalStyles?.CheckBox
? styleMap(this .theme.additionalStyles?.CheckBox)
: nothing}
>
<input
class =${classMap(this .theme.components.CheckBox.element)}
autocomplete="off"
@input=${(evt: Event) => {
if (!(evt.target instanceof HTMLInputElement)) {
return ;
}
this .#setBoundValue(evt.target.value);
}}
id="data"
type="checkbox"
.value=${value}
/>
<label class =${classMap(this .theme.components.CheckBox.label)} for ="data"
>${this .label?.literalString}</label
>
</section>`;
}
render() {
if (this .value && typeof this .value === "object" ) {
if ("literalBoolean" in this .value && this .value.literalBoolean) {
return this .#renderField(this .value.literalBoolean);
} else if ("literal" in this .value && this .value.literal !== undefined) {
return this .#renderField(this .value.literal);
} else if (this .value && "path" in this .value && this .value.path) {
if (!this .processor || !this .component) {
return html`(no model)`;
}
const textValue = this .processor.getData(
this .component,
this .value.path,
this .surfaceId ?? A2uiMessageProcessor.DEFAULT_SURFACE_ID
);
if (textValue === null ) {
return html`Invalid label`;
}
if (typeof textValue !== "boolean" ) {
return html`Invalid label`;
}
return this .#renderField(textValue);
}
}
return nothing;
}
}
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