text: /*
   * Copyright 2019 Igalia, S.L.
   *
   * 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.
   */
  
  var left = 0;
  var right = 0;
  
  function update(node, value){
      node.setAttribute('value', value);
  }
  
  module.exports = {
      left: function(node) {
          left = (left + 1) % 3;
          update(node, left);
      },
      right: function(node) {
          right = (right + 1) % 3;
          update(node, right);
      },
  }