br.com.objectos.html.io.FindFirst Maven / Gradle / Ivy

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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * 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.
 */
package br.com.objectos.html.io;

import java.util.List;

import br.com.objectos.css.Selector;
import br.com.objectos.html.Selectors;
import br.com.objectos.html.Tag;

/**
 * @author [email protected] (Marcio Endo)
 */
class FindFirst extends SingleValue {

  private FindFirst(Selector selector) {
    super(selector);
  }

  public static FindFirst of(String css) {
    Selector selector = Selectors.css(css);
    return new FindFirst(selector);
  }

  @Override
  void removeNextIteration(List> list) {
    if (found()) {
      list.add(this);
    }
  }

  @Override
  Tag find(HtmlReader reader, Selector selector) {
    return reader.stream()
        .filter(tag -> tag.matches(selector))
        .findFirst()
        .orElse(null);
  }

}