package org.kuali.rice.core.api.uif;

 import javax.xml.bind.annotation.XmlElement;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.Map;

 public class RadioButtonGroup extends AbstractControl implements KeyLabeled {

     @XmlElement(name = Elements.KEY_LABELS, required = false)

     private final Map<String, String> keyLabels;

     @Override

     public Map<String, String> getKeyLabels() {

         return keyLabels;

     }

     private RadioButtonGroup() {

         keyLabels = null;

     }

     private RadioButtonGroup(Builder b) {

         keyLabels = b.keyLabels;

     }

     public static final class Builder extends AbstractControl.Builder implements KeyLabeled {

         private Map<String, String> keyLabels;

         private Builder(Map<String, String> keyLabels) {

             setKeyLabels(keyLabels);

         }

         public static Builder create(Map<String, String> keyLabels) {

             return new Builder(keyLabels);

         }

         @Override

         public Map<String, String> getKeyLabels() {

             return keyLabels;

         }

         public void setKeyLabels(Map<String, String> keyLabels) {

             if (keyLabels == null || keyLabels.isEmpty()) {

                 throw new IllegalArgumentException("keyLabels must be non-null & non-empty");

             }

             this.keyLabels = Collections.unmodifiableMap(new HashMap<String, String>(keyLabels));

         }

         @Override

         public RadioButtonGroup build() {

             return new RadioButtonGroup(this);

         }

     }

     /**

      * Defines some internal constants used on this class.

      */

     static final class Constants {

         static final String TYPE_NAME = "RadioButtonGroupType";

     }

     static final class Elements {

         static final String KEY_LABELS = "keyLabels";

     }

 }