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.selection;
  
  import de.adesso.wickedcharts.highcharts.jackson.JsonRenderer;
  import de.adesso.wickedcharts.highcharts.options.Options;
  import de.adesso.wickedcharts.highcharts.options.interaction.Selection;
  import de.adesso.wickedcharts.highcharts.options.interaction.SelectionEvent;
  import de.adesso.wickedcharts.highcharts.options.util.OptionsUtil;
  import de.adesso.wickedcharts.wicket8.JavaScriptExpressionSendingAjaxBehavior;
  import de.adesso.wickedcharts.wicket8.highcharts.Chart;
  import de.adesso.wickedcharts.wicket8.highcharts.JsonRendererFactory;
  import de.adesso.wickedcharts.wicket8.highcharts.features.livedata.LiveDataAjaxBehavior;
  import org.apache.wicket.Component;
  import org.apache.wicket.ajax.AjaxRequestTarget;
  import org.apache.wicket.markup.head.IHeaderResponse;
  import org.apache.wicket.markup.head.JavaScriptHeaderItem;
  import org.apache.wicket.request.resource.JavaScriptResourceReference;
  import org.apache.wicket.util.string.StringValue;
  
  public abstract class SelectionBehavior extends JavaScriptExpressionSendingAjaxBehavior {
  
      private static final String SELECTION_EVENT = "selectionEvent";
  
      public SelectionBehavior() {
          addJavaScriptValue(SELECTION_EVENT, "WickedCharts.Selection.selectionEventToJson(selectionEvent)");
      }
  
      @Override
      protected void respond(final AjaxRequestTarget target) {
          Chart chart = (Chart) getComponent();
          Options options = chart.getOptions();
  
          SelectionEvent event = new SelectionEvent();
          event.setJavascriptChartName(chart.getJavaScriptVarName());
  
          StringValue selectionEventJson = getVariableValue(SELECTION_EVENT);
          if (selectionEventJson != null && !"".equals(selectionEventJson.toString())) {
              JsonRenderer renderer = JsonRendererFactory.getInstance().getRenderer();
              JsonSelectionEvent jsonEvent = renderer.fromJson(selectionEventJson.toString(), JsonSelectionEvent.class);
  
              for (JsonSelection jsonSelection : jsonEvent.getxAxes()) {
                  Selection selection = mapJsonSelection(options, jsonSelection);
                  event.getxAxes().add(selection);
              }
  
              for (JsonSelection jsonSelection : jsonEvent.getyAxes()) {
                  Selection selection = mapJsonSelection(options, jsonSelection);
                  event.getyAxes().add(selection);
              }
          }
  
          onSelection(event, target);
      }
  
      private Selection mapJsonSelection(final Options options, final JsonSelection jsonSelection) {
          Selection selection = new Selection();
          selection.setMax(jsonSelection.getMax());
          selection.setMin(jsonSelection.getMin());
          selection.setAxis(OptionsUtil.getAxisWithWickedChartsId(options, jsonSelection.getWickedChartsId()));
          return selection;
      }
  
      public abstract void onSelection(final SelectionEvent event, final AjaxRequestTarget target);
  
      @Override
      protected void onBind() {
          super.onBind();
          if (!(getComponent() instanceof Chart)) {
              throw new IllegalStateException(LiveDataAjaxBehavior.class.getSimpleName()
                      + " can only be bound to components of type " + Chart.class.getSimpleName() + ".");
          }
      }
  
      @Override
      public void renderHead(final Component component, final IHeaderResponse response) {
          super.renderHead(component, response);
          response.render(JavaScriptHeaderItem.forReference(new JavaScriptResourceReference(SelectionBehavior.class,
                  "SelectionBehavior.js")));
      }
  
  }
  