/*

  * Copyright 2007-2009 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.bo.options;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.Comparator;

 import java.util.List;

 import org.kuali.rice.core.util.KeyLabelPair;

 import org.kuali.rice.kns.bo.State;

 import org.kuali.rice.kns.lookup.keyvalues.KeyValuesBase;

 import org.kuali.rice.kns.service.KNSServiceLocator;

 /**

  * This class...

  */

 public class StateValuesFinder extends KeyValuesBase {

         private static List<KeyLabelPair> labels;

     /*

      * @see org.kuali.keyvalues.KeyValuesFinder#getKeyValues()

      */

     public List<KeyLabelPair> getKeyValues() {

             if ( labels == null ) {

                     List<State> baseCodes = KNSServiceLocator.getStateService().findAllStates();

                     List<State> codes = new ArrayList<State>( baseCodes );

                     Collections.sort(codes, new Comparator<State> () {

                                 public int compare(State o1, State o2) {

                                         return o1.getPostalStateName().compareTo(o2.getPostalStateName());

                                 }

                     });

                     List<KeyLabelPair> newLabels = new ArrayList<KeyLabelPair>();

                 newLabels.add(new KeyLabelPair("", ""));

                 for (State state : codes) {

                     if(state.isActive()) {

                         newLabels.add(new KeyLabelPair(state.getPostalStateCode(), state.getPostalStateName()));

                     }

                 }

                 labels = newLabels;

             }

         return labels;

     }

     @Override

     public void clearInternalCache() {

             labels = null;

     }

 }