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   *  to you under the Apache License, Version 2.0 (the
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  package org.apache.cayenne.modeler.action;
  
  import java.awt.event.ActionEvent;
  
  import org.apache.cayenne.configuration.ConfigurationNode;
  import org.apache.cayenne.configuration.event.ProcedureParameterEvent;
  import org.apache.cayenne.map.Procedure;
  import org.apache.cayenne.map.ProcedureParameter;
  import org.apache.cayenne.map.event.MapEvent;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.ProjectController;
  import org.apache.cayenne.modeler.dialog.ConfirmRemoveDialog;
  
  /**
   * Removes currently selected parameter from the current procedure.
   * 
   */
  public class RemoveProcedureParameterAction extends RemoveAction {
  
      private final static String ACTION_NAME = "Remove Parameter";
  
      /**
       * Name of action if multiple rels are selected
       */
      private final static String ACTION_NAME_MULTIPLE = "Remove Parameters";
  
      public static String getActionName(boolean multiple) {
          return multiple ? ACTION_NAME_MULTIPLE : ACTION_NAME;
      }
  
      public static String getActionName() {
          return ACTION_NAME;
      }
  
      public RemoveProcedureParameterAction(Application application) {
          super(ACTION_NAME, application);
      }
  
      /**
       * Returns <code>true</code> if last object in the path contains a removable
       * parameter.
       */
      @Override
      public boolean enableForPath(ConfigurationNode object) {
          if (object == null) {
              return false;
          }
  
          return object instanceof ProcedureParameter;
      }
  
      @Override
      public void performAction(ActionEvent e, boolean allowAsking) {
          ConfirmRemoveDialog dialog = getConfirmDeleteDialog(allowAsking);
  
          ProcedureParameter[] params = getProjectController()
                  .getCurrentProcedureParameters();
          if (params.length > 0) {
              if ((params.length == 1 && dialog.shouldDelete(
                      "procedure parameter",
                      params[0].getName()))
                      || (params.length > 1 && dialog
                              .shouldDelete("selected procedure parameters"))) {
                  removeProcedureParameters();
              }
          }
      }
  
      protected void removeProcedureParameters() {
          ProjectController mediator = getProjectController();
          ProcedureParameter[] parameters = mediator.getCurrentProcedureParameters();
          removeProcedureParameters(mediator.getCurrentProcedure(), parameters);
      }
  
      public void removeProcedureParameters(
              Procedure procedure,
              ProcedureParameter[] parameters) {
          ProjectController mediator = getProjectController();
  
          for (ProcedureParameter parameter : parameters) {
  
              procedure.removeCallParameter(parameter.getName());
  
              ProcedureParameterEvent e = new ProcedureParameterEvent(Application
                      .getFrame(), parameter, MapEvent.REMOVE);
  
              mediator.fireProcedureParameterEvent(e);
          }
      }
  }
  