polygerrit-ui/app/api/styles.ts

/**
 * @license
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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
 *
 * http://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.
 */

export interface StyleObject {
  /**
   * Creates a new unique CSS class and injects it in a root node of the element
   * if it hasn't been added yet. A root node is an document or is the
   * associated shadowRoot. This class can be added to any element with the same
   * root node.
   */
  getClassName(element: Element): string;

  /**
   * Apply shared style to the element.
   */
  apply(element: Element): void;
}

export interface StylesPluginApi {
  css(ruleStr: string): StyleObject;
}