/*******************************************************************************
    * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
    *
    * All rights reserved. This program and the accompanying materials
    * are made available under the terms of the Eclipse Public License v1.0
    * which accompanies this distribution, and is available at
    *  http://www.eclipse.org/legal/epl-v10.html
    *
    * Alternatively, the contents of this file may be used under the terms of
   * either the GNU Lesser General Public License Version 2.1 or later (the
   * "LGPL"), in which case the provisions of the LGPL are applicable instead
   * of those above. If you wish to allow use of your version of this file only
   * under the terms of the LGPL, and not to allow others to use your version of
   * this file under the terms of the EPL, indicate your decision by deleting
   * the provisions above and replace them with the notice and other provisions
   * required by the LGPL. If you do not delete the provisions above, a recipient
   * may use your version of this file under the terms of the EPL or the LGPL.
   *
   * Based on the original MiniSat specification from:
   *
   * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
   * Sixth International Conference on Theory and Applications of Satisfiability
   * Testing, LNCS 2919, pp 502-518, 2003.
   *
   * See www.minisat.se for the original solver in C++.
   *
   * Contributors:
   *   CRIL - initial API and implementation
   *******************************************************************************/
  package org.sat4j.tools;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.List;
  
  import org.sat4j.specs.IConstr;
  import org.sat4j.specs.ISolverService;
  import org.sat4j.specs.Lbool;
  import org.sat4j.specs.RandomAccessModel;
  import org.sat4j.specs.SearchListener;
  
  /**
   * Allow to feed the solver with several SearchListener.
   * 
   * @author leberre
   * 
   */
  public class MultiTracing<T extends ISolverService> implements
          SearchListener<T> {
  
      /**
  	 * 
  	 */
      private static final long serialVersionUID = 1L;
  
      private final Collection<SearchListener<T>> listeners = new ArrayList<SearchListener<T>>();
  
      public MultiTracing(SearchListener<T>... listeners) {
          this.listeners.addAll(Arrays.asList(listeners));
      }
  
      public MultiTracing(List<SearchListener<T>> listenersList) {
          this.listeners.addAll(listenersList);
      }
  
      public void assuming(int p) {
          for (SearchListener<T> sl : this.listeners) {
              sl.assuming(p);
          }
  
      }
  
      public void propagating(int p, IConstr reason) {
          for (SearchListener<T> sl : this.listeners) {
              sl.propagating(p, reason);
          }
  
      }
  
      public void backtracking(int p) {
          for (SearchListener<T> sl : this.listeners) {
              sl.backtracking(p);
          }
      }
  
      public void adding(int p) {
          for (SearchListener<T> sl : this.listeners) {
              sl.adding(p);
          }
  
      }
  
      public void learn(IConstr c) {
          for (SearchListener<T> sl : this.listeners) {
              sl.learn(c);
          }
  
      }
 
     public void learnUnit(int p) {
         for (SearchListener<T> sl : this.listeners) {
             sl.learnUnit(p);
         }
     }
 
     public void delete(int[] clause) {
         for (SearchListener<T> sl : this.listeners) {
             sl.delete(clause);
         }
 
     }
 
     public void conflictFound(IConstr confl, int dlevel, int trailLevel) {
         for (SearchListener<T> sl : this.listeners) {
             sl.conflictFound(confl, dlevel, trailLevel);
         }
 
     }
 
     public void conflictFound(int p) {
         for (SearchListener<T> sl : this.listeners) {
             sl.conflictFound(p);
         }
 
     }
 
     public void solutionFound(int[] model, RandomAccessModel lazyModel) {
         for (SearchListener<T> sl : this.listeners) {
             sl.solutionFound(model, lazyModel);
         }
 
     }
 
     public void beginLoop() {
         for (SearchListener<T> sl : this.listeners) {
             sl.beginLoop();
         }
     }
 
     public void start() {
         for (SearchListener<T> sl : this.listeners) {
             sl.start();
         }
 
     }
 
     public void end(Lbool result) {
         for (SearchListener<T> sl : this.listeners) {
             sl.end(result);
         }
     }
 
     public void restarting() {
         for (SearchListener<T> sl : this.listeners) {
             sl.restarting();
         }
 
     }
 
     public void backjump(int backjumpLevel) {
         for (SearchListener<T> sl : this.listeners) {
             sl.backjump(backjumpLevel);
         }
 
     }
 
     public void init(T solverService) {
         for (SearchListener<T> sl : this.listeners) {
             sl.init(solverService);
         }
     }
 
     public void cleaning() {
         for (SearchListener<T> sl : this.listeners) {
             sl.cleaning();
         }
     }
 
 }