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Closure Stylesheets is an extension to CSS that adds variables, functions, conditionals, and mixins to standard CSS. The tool also supports minification, linting, RTL flipping, and CSS class renaming.

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/*
 * Copyright 2011 Google Inc.
 *
 * 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 com.google.common.css.compiler.ast;

import com.google.common.css.SourceCodeLocation;
import com.google.common.css.compiler.ast.CssSelectorNode.Specificity;

/**
 * A {@link CssRefinerNode} implementation that represents a selector for a
 * class. For example: {@code .classy}
 *
 * @author [email protected] (Florian Benz)
 */
public class CssClassSelectorNode extends CssRefinerNode {
  private final boolean componentScoped;

  public CssClassSelectorNode(String refinerName, boolean componentScoped,
      SourceCodeLocation sourceCodeLocation) {
    super(Refiner.CLASS, refinerName, sourceCodeLocation);
    this.componentScoped = componentScoped;
  }

  public CssClassSelectorNode(String refinerName, SourceCodeLocation sourceCodeLocation) {
    this(refinerName, false, sourceCodeLocation);
  }

  protected CssClassSelectorNode(CssClassSelectorNode node) {
    this(node.refinerName, node.componentScoped, node.getSourceCodeLocation());
    this.setComments(node.getComments());
  }

  /**
   * Returns {@code true} if this class selector was prefixed with a percent-sign, indicating that
   * it should be prefixed with the current @component's class prefix.
   */
  public boolean isComponentScoped() {
    return componentScoped;
  }

  @Override
  public CssClassSelectorNode deepCopy() {
    return new CssClassSelectorNode(this);
  }

  @Override
  public Specificity getSpecificity() {
    // c++ (c = the number of class selectors, attributes selectors,
    // and pseudo-classes in the selector)
    return new Specificity(0, 1, 0);
  }
}