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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.css.io;

import java.util.Objects;

import br.com.objectos.css.Selector;

/**
 * @author [email protected] (Marcio Endo)
 */
class CssSelectors {

  private CssSelectors() {
  }

  public static Selector and(Selector first, Selector second) {
    Objects.requireNonNull(first);
    Objects.requireNonNull(second);
    return new AndSelector(first, second);
  }

  public static Selector attribute(String attribute) {
    Objects.requireNonNull(attribute);
    return new AttributeSelector(attribute, "", AttributeOperator.ATTRIBUTE);
  }

  public static Selector child(Selector first, Selector second) {
    Objects.requireNonNull(first);
    Objects.requireNonNull(second);
    return new ChildSelector(first, second);
  }

  public static Selector descendant(Selector first, Selector second) {
    Objects.requireNonNull(first);
    Objects.requireNonNull(second);
    return new DescendantSelector(first, second);
  }

  public static Selector id(String id) {
    Objects.requireNonNull(id);
    return new IdSelector(id);
  }

  public static Selector styleClass(String clazz) {
    Objects.requireNonNull(clazz);
    return new ClassSelector(clazz);
  }

  public static Selector tag(String name) {
    Objects.requireNonNull(name);
    return new TagSelector(name);
  }

}