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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
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  package org.apache.cayenne.modeler.action;
  
  import org.apache.cayenne.access.dbsync.SkipSchemaUpdateStrategy;
  import org.apache.cayenne.configuration.ConfigurationNode;
  import org.apache.cayenne.configuration.DataChannelDescriptor;
  import org.apache.cayenne.configuration.DataNodeDescriptor;
  import org.apache.cayenne.configuration.DataSourceDescriptor;
  import org.apache.cayenne.configuration.event.DataNodeEvent;
  import org.apache.cayenne.configuration.runtime.XMLPoolingDataSourceFactory;
  import org.apache.cayenne.dbsync.naming.NameBuilder;
  import org.apache.cayenne.map.event.MapEvent;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.ProjectController;
  import org.apache.cayenne.modeler.event.DataNodeDisplayEvent;
  import org.apache.cayenne.modeler.undo.CreateNodeUndoableEdit;
  import org.apache.cayenne.modeler.util.CayenneAction;
  
  import java.awt.event.ActionEvent;
  
  public class CreateNodeAction extends CayenneAction {
  
      /**
       * Constructor for CreateNodeAction.
       *
       * @param application
       */
      public CreateNodeAction(Application application) {
          super(getActionName(), application);
      }
  
      public static String getActionName() {
          return "Create DataNode";
      }
  
      @Override
      public String getIconName() {
          return "icon-node.png";
      }
  
      @Override
      public void performAction(ActionEvent e) {
          DataNodeDescriptor node = buildDataNode();
          createDataNode(node);
          application.getUndoManager().addEdit(new CreateNodeUndoableEdit(application, node));
      }
  
      public void createDataNode(DataNodeDescriptor node) {
          DataChannelDescriptor domain = (DataChannelDescriptor) getProjectController().getProject().getRootNode();
          domain.getNodeDescriptors().add(node);
          getProjectController().fireDataNodeEvent(new DataNodeEvent(this, node, MapEvent.ADD));
          getProjectController().fireDataNodeDisplayEvent(new DataNodeDisplayEvent(this, domain, node));
      }
  
      /**
       * Returns <code>true</code> if path contains a DataDomain object.
       */
      public boolean enableForPath(ConfigurationNode object) {
          return object != null && ((DataNodeDescriptor) object).getDataChannelDescriptor() != null;
  
      }
  
      /**
       * Creates a new DataNode, adding to the current domain, but doesn't send
       * any events.
       */
      public DataNodeDescriptor buildDataNode() {
          ProjectController mediator = getProjectController();
          DataChannelDescriptor domain = (DataChannelDescriptor) mediator.getProject().getRootNode();
  
          DataNodeDescriptor node = buildDataNode(domain);
          node.setDataSourceDescriptor(new DataSourceDescriptor());
  
          // by default create JDBC Node
          node.setDataSourceFactoryType(XMLPoolingDataSourceFactory.class.getName());
          node.setSchemaUpdateStrategyType(SkipSchemaUpdateStrategy.class.getName());
  
          return node;
      }
  
      /**
       * A factory method that makes a new DataNode.
       */
      DataNodeDescriptor buildDataNode(DataChannelDescriptor dataChannelDescriptor) {
          DataNodeDescriptor node = new DataNodeDescriptor();
          node.setName(NameBuilder.builder(node, dataChannelDescriptor).name());
          node.setDataChannelDescriptor(dataChannelDescriptor);
  
          return node;
      }
  }
  