basic-catalog-a2ui-lit-element.ts

/*
 * Copyright 2026 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 { ComponentApi } from "@a2ui/web_core/v0_9";
import { A2uiLitElement } from "../../a2ui-lit-element.js";
import { injectBasicCatalogStyles } from "@a2ui/web_core/v0_9/basic_catalog";

/**
 * A base class for A2UI basic catalog components.
 *
 * Handles some common features of all basic catalog A2ui elements, like
 * injecting the basic CSS styles if needed, and setting the flex property
 * if set by the framework.
 */
export abstract class BasicCatalogA2uiLitElement<
  Api extends ComponentApi,
> extends A2uiLitElement<Api> {
  connectedCallback() {
    super.connectedCallback();
    injectBasicCatalogStyles();
  }

  updated(changedProperties: Map<PropertyKey, unknown>) {
    super.updated(changedProperties);
    const props = this.controller?.props as any;
    if (props && props.weight !== undefined) {
      this.style.flex = String(props.weight);
    }
  }
}