text: /*
  * 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.
  */
  
  
  export default function (ecModel) {
  
      var paletteScope = {};
      ecModel.eachSeriesByType('graph', function (seriesModel) {
          var categoriesData = seriesModel.getCategoriesData();
          var data = seriesModel.getData();
  
          var categoryNameIdxMap = {};
  
          categoriesData.each(function (idx) {
              var name = categoriesData.getName(idx);
              // Add prefix to avoid conflict with Object.prototype.
              categoryNameIdxMap['ec-' + name] = idx;
  
              var itemModel = categoriesData.getItemModel(idx);
              var color = itemModel.get('itemStyle.color')
                  || seriesModel.getColorFromPalette(name, paletteScope);
              categoriesData.setItemVisual(idx, 'color', color);
          });
  
          // Assign category color to visual
          if (categoriesData.count()) {
              data.each(function (idx) {
                  var model = data.getItemModel(idx);
                  var category = model.getShallow('category');
                  if (category != null) {
                      if (typeof category === 'string') {
                          category = categoryNameIdxMap['ec-' + category];
                      }
                      if (!data.getItemVisual(idx, 'color', true)) {
                          data.setItemVisual(
                              idx, 'color',
                              categoriesData.getItemVisual(category, 'color')
                          );
                      }
                  }
              });
          }
      });
  }