/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.web.controller.hl7;

import java.util.List;
import java.util.Vector;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openmrs.api.context.Context;
import org.openmrs.hl7.HL7Service;
import org.openmrs.hl7.HL7Source;
import org.springframework.beans.propertyeditors.CustomNumberEditor;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.servlet.mvc.SimpleFormController;

/**
 *  This is the controlling class for hl7SourceList.jsp page. It initBinder and formBackingObject
 * are called before page load
 *
 */
public class Hl7SourceListController extends SimpleFormController {
	
	/** Logger for this class and subclasses */
	protected final Log log = LogFactory.getLog(getClass());
	
	/**
	 * Allows for Integers to be used as values in input tags. Normally, only strings and lists are
	 * expected
	 * 
	 * @see org.springframework.web.servlet.mvc.BaseCommandController#initBinder(javax.servlet.http.HttpServletRequest,
	 *      org.springframework.web.bind.ServletRequestDataBinder)
	 */
	protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) throws Exception {
		super.initBinder(request, binder);
		binder.registerCustomEditor(java.lang.Integer.class, new CustomNumberEditor(java.lang.Integer.class, true));
	}
	
	/**
	 * This is called prior to displaying a form for the first time. It tells Spring the
	 * form/command object to load into the request
	 * 
	 * @see org.springframework.web.servlet.mvc.AbstractFormController#formBackingObject(javax.servlet.http.HttpServletRequest)
	 */
	protected Object formBackingObject(HttpServletRequest request) throws ServletException {
		
		//default empty Object
		List<HL7Source> hl7SourceList = new Vector<HL7Source>();
		
		//only fill the Object is the user has authenticated properly
		if (Context.isAuthenticated()) {
			HL7Service hl7s = Context.getHL7Service();
			hl7SourceList = hl7s.getAllHL7Sources();
		}
		
		return hl7SourceList;
	}
	
}