/*

  * Copyright 2005-2007 The Kuali Foundation

  * 

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  * 

  * http://www.opensource.org/licenses/ecl2.php

  * 

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.kns.rule;

 import org.apache.struts.action.ActionForm;

 import org.kuali.rice.kns.rule.event.PromptBeforeValidationEvent;

 import org.kuali.rice.krad.rule.BusinessRule;

 import javax.servlet.http.HttpServletRequest;

 /**

  * An interface for a class that provides the ability to prompt the user with a question prior to running a document action.

  * An implementation class of this interface may be specified in the document data dictionary file.

  * 

  * By default, unless KualiDocumentActionBase is overridden, the sole method will be invoked upon using the "approve", "blanketApprove",

  * "performRouteReport", and "route" methodToCalls.

  */

 public interface PromptBeforeValidation extends BusinessRule {

     /**

      * Callback method from Maintenance action that allows checks to be done and response redirected via the PreRulesCheckEvent

      * 

      * @param form

      * @param request

      * @param event stores various information necessary to render the question prompt

      * @return boolean indicating whether the validation (and if validation successful, the action) should continue.  If false, the

      * values within the event parameter will determine how the struts action handler should proceed

      */

     public boolean processPrompts(ActionForm form, HttpServletRequest request, PromptBeforeValidationEvent event);

 }