/*
    * Tethys: GUI Utilities
    * Copyright 2012-2026. Tony Washer
    *
    * 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 io.github.tonywasher.joceanus.tethys.swing.chart;
  
  import org.jfree.chart.ChartFactory;
  import org.jfree.chart.ChartMouseEvent;
  import org.jfree.chart.ChartMouseListener;
  import org.jfree.chart.ChartPanel;
  import org.jfree.chart.JFreeChart;
  import org.jfree.chart.entity.ChartEntity;
  import org.jfree.chart.entity.PieSectionEntity;
  import org.jfree.chart.plot.PiePlot;
  import org.jfree.data.general.DefaultPieDataset;
  
  import io.github.tonywasher.joceanus.tethys.core.chart.TethysUICorePieChart;
  import io.github.tonywasher.joceanus.tethys.core.factory.TethysUICoreFactory;
  import io.github.tonywasher.joceanus.tethys.swing.base.TethysUISwingNode;
  
  /**
   * Swing Pie Chart.
   */
  public class TethysUISwingPieChart
          extends TethysUICorePieChart {
      /**
       * The Node.
       */
      private final TethysUISwingNode theNode;
  
      /**
       * The dataSet.
       */
      private final DefaultPieDataset<String> theDataSet;
  
      /**
       * The chart.
       */
      private final JFreeChart theChart;
  
      /**
       * The panel.
       */
      private final ChartPanel thePanel;
  
      /**
       * Constructor.
       *
       * @param pFactory the Gui factory
       */
      TethysUISwingPieChart(final TethysUICoreFactory<?> pFactory) {
          /* initialise underlying class */
          super(pFactory);
  
          /* Create the dataSet */
          theDataSet = new DefaultPieDataset<>();
  
          /* Create the chart */
          theChart = ChartFactory.createPieChart(
                  null,
                  theDataSet,
                  true,
                  true,
                  false);
          @SuppressWarnings("unchecked") final PiePlot<String> myPlot = (PiePlot<String>) theChart.getPlot();
          myPlot.setStartAngle(0);
          myPlot.setToolTipGenerator((pDataSet, pKey) -> getToolTip((String) pKey));
  
          /* Create the panel */
          thePanel = new ChartPanel(theChart);
          thePanel.setOpaque(true);
          thePanel.addChartMouseListener(new ChartMouseListener() {
              @Override
              public void chartMouseMoved(final ChartMouseEvent e) {
                  /* NoOp */
              }
  
              @Override
              public void chartMouseClicked(final ChartMouseEvent e) {
                  final ChartEntity entity = e.getEntity();
                  if (entity instanceof PieSectionEntity section) {
                      selectSection((String) section.getSectionKey());
                  }
              }
          });
  
          /* Create the node */
         theNode = new TethysUISwingNode(thePanel);
     }
 
     @Override
     public TethysUISwingNode getNode() {
         return theNode;
     }
 
     @Override
     public void setVisible(final boolean pVisible) {
         theNode.setVisible(pVisible);
     }
 
     @Override
     public void setEnabled(final boolean pEnabled) {
         thePanel.setEnabled(pEnabled);
     }
 
     @Override
     public void setPreferredWidth(final Integer pWidth) {
         theNode.setPreferredWidth(pWidth);
     }
 
     @Override
     public void setPreferredHeight(final Integer pHeight) {
         theNode.setPreferredHeight(pHeight);
     }
 
     @Override
     public void updatePieChart(final TethysUIPieChartData pData) {
         /* Update underlying data */
         super.updatePieChart(pData);
 
         /* Set the chart title */
         theChart.setTitle(pData.getTitle());
 
         /* Declare changes */
         theChart.fireChartChanged();
     }
 
     @Override
     protected void resetData() {
         /* Clear existing data  */
         theDataSet.clear();
 
         /* Clear underlying data  */
         super.resetData();
     }
 
     @Override
     protected void createSlice(final TethysUIPieChartSection pSection) {
         /* Create the slice */
         theDataSet.setValue(pSection.getName(), pSection.getValue().doubleValue());
 
         /* Add to underlying data  */
         super.createSlice(pSection);
     }
 }