/**
    * Copyright 2005-2012 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.krad.keyvalues;
  
  import org.kuali.rice.core.api.util.ConcreteKeyValue;
  import org.kuali.rice.core.api.util.KeyValue;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /** a simple values finder that uses a map as the key/value source. */
  public class MapValuesFinder implements KeyValuesFinder {
  
      private Map<String, String> keyValues;
  
      public MapValuesFinder(Map<String, String> keyValues) {
          setKeyValues(keyValues);
      }
  
      public void setKeyValues(Map<String, String> keyValues) {
          if (keyValues == null) {
              throw new IllegalArgumentException("keyValues was null");
          }
          this.keyValues = Collections.unmodifiableMap(new HashMap<String, String>(keyValues));
      }
  
      @Override
      public List<KeyValue> getKeyValues() {
          final List<KeyValue> list = new ArrayList<KeyValue>();
          for (Map.Entry<String, String> entry : keyValues.entrySet()) {
              list.add(new ConcreteKeyValue(entry));
          }
          return Collections.unmodifiableList(list);
      }
  
      @Override
      public List<KeyValue> getKeyValues(boolean includeActiveOnly) {
          return getKeyValues();
      }
  
      @Override
      public Map<String, String> getKeyLabelMap() {
          return keyValues;
      }
  
      @Override
      public String getKeyLabel(String key) {
          return keyValues.get(key);
      }
  
      @Override
      public void clearInternalCache() {
          //do nothing
      }
  }