content: /**
   *   Copyright 2012-2019 Wicked Charts (http://github.com/adessoAG/wicked-charts)
   *
   *   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 de.adesso.wickedcharts.wicket8.highcharts.features.global;
  
  import de.adesso.wickedcharts.highcharts.jackson.JsonRenderer;
  import de.adesso.wickedcharts.highcharts.options.Global;
  import de.adesso.wickedcharts.highcharts.options.Options;
  import de.adesso.wickedcharts.highcharts.options.processing.IOptionsProcessor;
  import de.adesso.wickedcharts.highcharts.options.processing.OptionsProcessorContext;
  import de.adesso.wickedcharts.wicket8.highcharts.JsonRendererFactory;
  import org.apache.wicket.markup.head.IHeaderResponse;
  import org.apache.wicket.markup.head.JavaScriptHeaderItem;
  
  /**
   * This processor reads the global options from an {@link Options} object and
   * calls Highcharts' setOptions function to use the options globally for all
   * charts.
   *
   * If more than one chart with global options are on a single page, the global
   * options of the last chart override all others!
   *
   * @author Tom Hombergs (tom.hombergs@gmail.com)
   */
  public class GlobalProcessor implements IOptionsProcessor {
  
      private IHeaderResponse response;
  
      public GlobalProcessor(IHeaderResponse response) {
          this.response = response;
      }
  
      @Override
      public void processOptions(Options options, OptionsProcessorContext context) {
          Global global = context.getGlobal();
          if (global != null) {
              JsonRenderer renderer = JsonRendererFactory.getInstance().getRenderer();
              String globalJson = renderer.toJson(global);
              response.render(JavaScriptHeaderItem.forScript("Highcharts.setOptions({global: " + globalJson + "});",
                      "highcharts-global"));
          }
      }
  
  }
  