package org.apidesign.anagram.app.property;

 import org.apidesign.anagram.api.Scrambler;

 import org.apidesign.anagram.api.WordLibrary;

 import org.apidesign.anagram.gui.Anagrams;

 public final class AnagramsWithProperties extends Anagrams {

     private WordLibrary wordLibrary;

     private Scrambler scrambler;

     public AnagramsWithProperties() {

     }

     @Override

     protected WordLibrary getWordLibrary() {

         try {

             if (wordLibrary == null) {

                 String implName = System.getProperty(

                     "org.apidesign.anagram.api.WordLibrary"

                 );

                 assert implName != null;

                 Class<?> impl = Class.forName(implName);

                 wordLibrary = (WordLibrary)impl.newInstance();

             }

             return wordLibrary;

         } catch (Exception ex) {

             throw new IllegalStateException(ex);

         }

     }

     @Override

     protected Scrambler getScrambler() {

         try {

             if (scrambler == null) {

                 String implName = System.getProperty(

                     "org.apidesign.anagram.api.Scrambler"

                 );

                 assert implName != null;

                 Class<?> impl = Class.forName(implName);

                 scrambler = (Scrambler)impl.newInstance();

             }

             return scrambler;

         } catch (Exception ex) {

             throw new IllegalStateException(ex);

         }

     }

 }