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  package org.apache.cayenne.modeler.action;
  
  import java.awt.event.ActionEvent;
  import java.io.File;
  
  import org.apache.cayenne.CayenneRuntimeException;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.CayenneModelerController;
  import org.apache.cayenne.modeler.util.CayenneAction;
  import org.apache.cayenne.project.Project;
  
  /**
   */
  public class RevertAction extends CayenneAction {
  
      public static String getActionName() {
          return "Revert";
      }
  
      public RevertAction(Application application) {
          super(getActionName(), application);
      }
  
      public void performAction(ActionEvent e) {
  
          Project project = getCurrentProject();
          if (project == null) {
              return;
          }
  
          boolean isNew = project.getConfigurationResource() == null;
  
          CayenneModelerController controller = getApplication().getFrameController();
  
          // close ... don't use OpenProjectAction close method as it will ask for save, we
          // don't want that here
          controller.projectClosedAction();
  
          File fileDirectory = new File(project
                  .getConfigurationResource()
                  .getURL()
                  .getPath());
          // reopen existing
          if (!isNew && fileDirectory.isFile()) {
              OpenProjectAction openAction = controller
                      .getApplication()
                      .getActionManager()
                      .getAction(OpenProjectAction.class);
              openAction.openProject(fileDirectory);
          }
          // create new
          else if (!(project instanceof Project)) {
              throw new CayenneRuntimeException("Only ApplicationProjects are supported.");
          }
          else {
              controller.getApplication().getActionManager().getAction(
                      NewProjectAction.class).performAction(e);
          }
  
          application.getUndoManager().discardAllEdits();
      }
  }
  