package org.jtheque.core.managers.lifecycle.phases;

 import java.util.Collection;

 import java.util.Queue;

 import java.util.concurrent.LinkedBlockingQueue;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 /**

  * A phases manager implementation.

  *

  * @author Baptiste Wicht

  */

 public final class PhasesManagerImpl implements IPhasesManager {

     private final Queue<LifeCyclePhase> phases;

     /**

      * Construct a new PhasesManagerImpl.

      *

      * @param phases The phases to manage.

      */

     public PhasesManagerImpl(Collection<LifeCyclePhase> phases) {

         super();

         this.phases = new LinkedBlockingQueue<LifeCyclePhase>(phases);

     }

     @Override

     public void launchNextPhase() {

         if (phases.isEmpty()) {

             throw new IllegalStateException("All the phases are launched !");

         }

         phases.poll().run();

     }

     @Override

     public boolean isDone() {

         return phases.isEmpty();

     }

 }