/*
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 { NumberValue, StringValue } from
"../types/primitives";
import { ResolvedTextField } from
"../types/types.js";
import { A2uiMessageProcessor } from
"../data/model-processor.js";
import { classMap } from
"lit/directives/class-map.js";
import { styleMap } from
"lit/directives/style-map.js";
import { structuralStyles } from
"./styles.js";
import { extractNumberValue, extractStringValue } from
"./utils/utils.js";
@customElement(
"a2ui-slider")
export
class Slider
extends Root {
@property()
accessor value: NumberValue |
null =
null;
@property()
accessor minValue =
0;
@property()
accessor maxValue =
0;
@property()
accessor label: StringValue |
null =
null;
@property()
accessor inputType: ResolvedTextField[
"type"] |
null =
null;
static styles = [
structuralStyles,
css`
* {
box-sizing: border-box;
}
:host {
display: block;
flex:
var(--weight);
}
input {
display: block;
width:
100%;
}
.description {
}
`,
];
#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: string | number) {
return html`<section
class=${classMap(
this.theme.components.Slider.container)}
>
<label
class=${classMap(
this.theme.components.Slider.label)}
for=
"data">
${
this.label?.literalString ??
""}
</label>
<input
autocomplete=
"off"
class=${classMap(
this.theme.components.Slider.element)}
style=${
this.theme.additionalStyles?.Slider
? styleMap(
this.theme.additionalStyles?.Slider)
: nothing}
@input=${(evt: Event) => {
if (!(evt.target
instanceof HTMLInputElement)) {
return;
}
this.#setBoundValue(evt.target.value);
}}
id=
"data"
name=
"data"
.value=${value}
type=
"range"
min=${
this.minValue ??
"0"}
max=${
this.maxValue ??
"0"}
/>
<span
class=${classMap(
this.theme.components.Slider.label)}
>${
this.value
? extractNumberValue(
this.value,
this.component,
this.processor,
this.surfaceId
)
:
"0"}</span
>
</section>`;
}
render() {
if (
this.value &&
typeof this.value ===
"object") {
if (
"literalNumber" in
this.value &&
this.value.literalNumber) {
return this.#renderField(
this.value.literalNumber);
}
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 processor)`;
}
const textValue =
this.processor.getData(
this.component,
this.value.path,
this.surfaceId ?? A2uiMessageProcessor.DEFAULT_SURFACE_ID
);
if (textValue ===
null) {
return html`Invalid value`;
}
if (
typeof textValue !==
"string" &&
typeof textValue !==
"number") {
return html`Invalid value`;
}
return this.#renderField(textValue);
}
}
return nothing;
}
}