package org.opentrafficsim.editor.extensions;
   
   import java.rmi.RemoteException;
   import java.util.function.Consumer;
   
   import org.djutils.event.Event;
   import org.djutils.event.EventListener;
   import org.djutils.event.reference.ReferenceType;
   import org.opentrafficsim.editor.OtsEditor;
  import org.opentrafficsim.editor.XsdPaths;
  import org.opentrafficsim.editor.XsdTreeNode;
  import org.opentrafficsim.editor.XsdTreeNodeRoot;
  
  /**
   * Allows the user to save definitions separately.
   * <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 DefinitionsSaver implements EventListener, Consumer<XsdTreeNode>
  {
      /** */
      private static final long serialVersionUID = 20230914L;
  
      /** Editor. */
      private OtsEditor editor;
  
      /**
       * Constructor.
       * @param editor OtsEditor; editor.
       * @throws RemoteException if listener cannot be added.
       */
      public DefinitionsSaver(final OtsEditor editor) throws RemoteException
      {
          editor.addListener(this, OtsEditor.NEW_FILE);
          this.editor = editor;
      }
  
      /** {@inheritDoc} */
      @Override
      public void notify(final Event event) throws RemoteException
      {
          if (event.getType().equals(OtsEditor.NEW_FILE))
          {
              XsdTreeNodeRoot root = (XsdTreeNodeRoot) event.getContent();
              root.addListener(this, XsdTreeNodeRoot.NODE_CREATED, ReferenceType.WEAK);
              root.addListener(this, XsdTreeNodeRoot.NODE_REMOVED, ReferenceType.WEAK);
          }
          else if (event.getType().equals(XsdTreeNodeRoot.NODE_CREATED))
          {
              XsdTreeNode node = (XsdTreeNode) ((Object[]) event.getContent())[0];
              if (!node.getPathString().equals(XsdPaths.DEFINITIONS + ".xi:include") && node.getParent() != null
                      && node.getParent().getPathString().equals(XsdPaths.DEFINITIONS))
              {
                  node.addConsumer("Save as include file...", this);
              }
          }
          else if (event.getType().equals(XsdTreeNodeRoot.NODE_REMOVED))
          {
              XsdTreeNode node = (XsdTreeNode) ((Object[]) event.getContent())[0];
              node.removeListener(this, XsdTreeNodeRoot.NODE_REMOVED);
          }
      }
  
      /** {@inheritDoc} */
      @Override
      public void accept(final XsdTreeNode node)
      {
          this.editor.saveFileAs(node);
      }
  }