packages/dom/src/css.ts

/**
 * SPDX-FileCopyrightText: 2016-2020 The Apache Software Foundation
 * SPDX-License-Identifier: Apache-2.0
 * @license
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import type { CssSelector, Matcher } from '@apache-annotator/selector';
import { ownerDocument } from './owner-document';

export function createCssSelectorMatcher(
  selector: CssSelector,
): Matcher<Range, Range> {
  return async function* matchAll(scope) {
    const document = ownerDocument(scope);
    for (const element of document.querySelectorAll(selector.value)) {
      const range = document.createRange();
      range.selectNode(element);

      if (
        scope.isPointInRange(range.startContainer, range.startOffset) &&
        scope.isPointInRange(range.endContainer, range.endOffset)
      ) {
        yield range;
      }
    }
  };
}