frontend/src/components/ha-selector/ha-selector-boolean.ts

import {
  css,
  CSSResult,
  customElement,
  html,
  LitElement,
  property,
} from "lit-element";
import { fireEvent } from "../../common/dom/fire_event";
import { HomeAssistant } from "../../types";
import "../ha-formfield";
import "../ha-switch";

@customElement("ha-selector-boolean")
export class HaBooleanSelector extends LitElement {
  @property() public hass!: HomeAssistant;

  @property() public value?: number;

  @property() public label?: string;

  @property({ type: Boolean }) public disabled = false;

  protected render() {
    return html` <ha-formfield alignEnd spaceBetween .label=${this.label}>
      <ha-switch
        .checked=${this.value}
        @change=${this._handleChange}
        .disabled=${this.disabled}
      ></ha-switch>
    </ha-formfield>`;
  }

  private _handleChange(ev) {
    const value = ev.target.checked;
    if (this.value === value) {
      return;
    }
    fireEvent(this, "value-changed", { value });
  }

  static get styles(): CSSResult {
    return css`
      ha-formfield {
        width: 100%;
        margin: 16px 0;
        --mdc-typography-body2-font-size: 1em;
      }
    `;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    "ha-selector-boolean": HaBooleanSelector;
  }
}