/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.core.pattern;
  
  import java.util.List;
  
  import ch.qos.logback.core.Context;
  import ch.qos.logback.core.spi.ContextAware;
  import ch.qos.logback.core.spi.ContextAwareBase;
  import ch.qos.logback.core.spi.LifeCycle;
  import ch.qos.logback.core.status.Status;
  
  /**
   * As the name suggests, a DynamicConverter performs a conversion based on the parameter E
   * given to the {@link #convert(E)} method. Almost all converters are derived from the
   * DynamicConverter class.
   *
   * @param <E>
   */
  abstract public class DynamicConverter<E> extends FormattingConverter<E> implements LifeCycle, ContextAware {
  
      ContextAwareBase cab = new ContextAwareBase(this);
  
      // Contains a list of option Strings.
      private List<String> optionList;
  
      /**
       * Is this component active?
       */
      protected boolean started = false;
  
      /**
       * Components that depend on options passed during configuration can override
       * this method in order to make appropriate use of those options. For simpler
       * components, the trivial implementation found in this abstract class will be
       * sufficient.
       */
      @Override
      public void start() {
          started = true;
      }
  
      @Override
      public void stop() {
          started = false;
      }
  
      @Override
      public boolean isStarted() {
          return started;
      }
  
      public void setOptionList(List<String> optionList) {
          this.optionList = optionList;
      }
  
      /**
       * Return the first option passed to this component. The returned value may be
       * null if there are no options.
       * 
       * @return First option, may be null.
       */
      public String getFirstOption() {
          if (optionList == null || optionList.size() == 0) {
              return null;
          } else {
              return optionList.get(0);
          }
      }
  
      protected List<String> getOptionList() {
          return optionList;
      }
  
      @Override
      public void setContext(Context context) {
          cab.setContext(context);
      }
  
      @Override
      public Context getContext() {
          return cab.getContext();
      }
  
      @Override
      public void addStatus(Status status) {
          cab.addStatus(status);
      }
 
     @Override
     public void addInfo(String msg) {
         cab.addInfo(msg);
     }
 
     @Override
     public void addInfo(String msg, Throwable ex) {
         cab.addInfo(msg, ex);
     }
 
     @Override
     public void addWarn(String msg) {
         cab.addWarn(msg);
     }
 
     @Override
     public void addWarn(String msg, Throwable ex) {
         cab.addWarn(msg, ex);
     }
 
     @Override
     public void addError(String msg) {
         cab.addError(msg);
     }
 
     @Override
     public void addError(String msg, Throwable ex) {
         cab.addError(msg, ex);
     }
 }