package org.apidesign.anagram.app.register;

 import org.apidesign.anagram.api.Scrambler;

 import org.apidesign.anagram.api.UI;

 import org.apidesign.anagram.api.WordLibrary;

 public final class Launcher {

     private static Class<? extends WordLibrary> wordLibrary;

     private static Class<? extends Scrambler> scrambler;

     private static Class<? extends UI> ui;

     private Launcher() {

     }

     public static void registerWordLibrary(Class<? extends WordLibrary> libraryClass) {

         wordLibrary = libraryClass;

     }

     public static void registerScrambler(Class<? extends Scrambler> scramblerClass) {

         scrambler = scramblerClass;

     }

     public static void registerUI(Class<? extends UI> uiClass) {

         ui = uiClass;

     }

     public static UI launch() throws Exception {

         WordLibrary w = wordLibrary.newInstance();

         Scrambler s = scrambler.newInstance();

         return ui.getConstructor(WordLibrary.class, Scrambler.class).newInstance(w, s);

     }

 }