package org.opentrafficsim.editor.extensions.map;
   
   import org.djunits.value.vdouble.scalar.Direction;
   import org.djutils.draw.bounds.Bounds2d;
   import org.djutils.draw.line.Polygon2d;
   import org.djutils.draw.point.DirectedPoint2d;
   import org.djutils.draw.point.Point2d;
   import org.djutils.event.Event;
   import org.djutils.event.EventListener;
  import org.djutils.event.reference.ReferenceType;
  import org.opentrafficsim.base.geometry.OtsShape;
  import org.opentrafficsim.draw.network.NodeAnimation.NodeData;
  import org.opentrafficsim.editor.OtsEditor;
  import org.opentrafficsim.editor.XsdTreeNode;
  import org.opentrafficsim.editor.extensions.Adapters;
  
  /**
   * NodeData for the editor Map.
   * <p>
   * Copyright (c) 2023-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
   * </p>
   * @author <a href="https://github.com/wjschakel">Wouter Schakel</a>
   */
  public class MapNodeData extends MapData implements NodeData, EventListener
  {
  
      /** Bounds. */
      private static final Bounds2d BOUNDS = new Bounds2d(2.0, 2.0);
  
      /** String attribute. */
      private String id = "";
  
      /** Coordinate attribute. */
      private Point2d coordinate = null;
  
      /** Direction attribute. */
      private Direction direction = null;
  
      /** Location. */
      private DirectedPoint2d location = new DirectedPoint2d(0.0, 0.0, 0.0);
  
      /** Absolute contour. */
      private Polygon2d absoluteContour;
  
      /** Relative contour. */
      private Polygon2d relativeContour;
  
      /**
       * Constructor.
       * @param map map.
       * @param nodeNode node Ots.Network.Node.
       * @param editor editor.
       */
      public MapNodeData(final EditorMap map, final XsdTreeNode nodeNode, final OtsEditor editor)
      {
          super(map, nodeNode, editor);
          getNode().addListener(this, XsdTreeNode.ATTRIBUTE_CHANGED, ReferenceType.WEAK);
          // for when node is duplicated, set data immediately
          if (getNode().isActive())
          {
              notify(new Event(XsdTreeNode.ATTRIBUTE_CHANGED, new Object[] {getNode(), "Id", null}));
              notify(new Event(XsdTreeNode.ATTRIBUTE_CHANGED, new Object[] {getNode(), "Coordinate", null}));
              notify(new Event(XsdTreeNode.ATTRIBUTE_CHANGED, new Object[] {getNode(), "Direction", null}));
          }
          this.absoluteContour = OtsShape.boundsAsAbsoluteContour(this);
          this.relativeContour =
                  new Polygon2d(OtsShape.toRelativeTransform(this.location).transform(this.absoluteContour.iterator()));
      }
  
      @Override
      public Bounds2d getRelativeBounds()
      {
          return BOUNDS;
      }
  
      @Override
      public Polygon2d getAbsoluteContour()
      {
          return this.absoluteContour;
      }
  
      @Override
      public Polygon2d getRelativeContour()
      {
          return this.relativeContour;
      }
  
      @Override
      public String getId()
      {
          return this.id;
      }
  
      @Override
      public void destroy()
      {
          super.destroy();
          getNode().removeListener(this, XsdTreeNode.ATTRIBUTE_CHANGED);
     }
 
     @Override
     public DirectedPoint2d getLocation()
     {
         return this.location;
     }
 
     @Override
     public void notify(final Event event)
     {
         String attribute = (String) ((Object[]) event.getContent())[1];
         String value = getNode().getAttributeValue(attribute);
         if ("Id".equals(attribute))
         {
             this.id = value == null ? "" : value;
             return;
         }
         else if ("Coordinate".equals(attribute))
         {
             setValue((v) -> this.coordinate = v, Adapters.get(Point2d.class), getNode(), "Coordinate");
         }
         else if ("Direction".equals(attribute))
         {
             setValue((v) -> this.direction = v, Adapters.get(Direction.class), getNode(), "Direction");
         }
         else
         {
             return;
         }
         setLocation();
     }
 
     @Override
     public void evalChanged()
     {
         this.id = getNode().getId() == null ? "" : getNode().getId();
         setValue((v) -> this.coordinate = v, Adapters.get(Point2d.class), getNode(), "Coordinate");
         setValue((v) -> this.direction = v, Adapters.get(Direction.class), getNode(), "Direction");
         setLocation();
     }
 
     /**
      * Set the location from the coordinate and direction. Notify when invalid or valid.
      */
     private void setLocation()
     {
         if (this.coordinate == null)
         {
             setInvalid();
             return;
         }
         this.location = new DirectedPoint2d(this.coordinate, this.direction == null ? 0.0 : this.direction.si);
         this.absoluteContour = OtsShape.boundsAsAbsoluteContour(this);
         this.relativeContour =
                 new Polygon2d(OtsShape.toRelativeTransform(this.location).transform(this.absoluteContour.iterator()));
         setValid();
     }
 
     @Override
     public String toString()
     {
         return "Node " + this.id;
     }
 
 }