package ch.qos.logback.core.model.processor;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import ch.qos.logback.core.model.Model;
   import ch.qos.logback.core.spi.FilterReply;
   
   public class ChainedModelFilter implements ModelFilter {
  
      List<ModelFilter> modelFilters = new ArrayList<>();
  
      public ChainedModelFilter() {
      }
  
      static public ChainedModelFilter newInstance() {
          return new ChainedModelFilter();
      }
  
      public ChainedModelFilter allow(Class<? extends Model> allowedType) {
          modelFilters.add(new AllowModelFilter(allowedType));
          return this;
      }
  
      public ChainedModelFilter deny(Class<? extends Model> allowedType) {
          modelFilters.add(new DenyModelFilter(allowedType));
          return this;
      }
  
      public ChainedModelFilter denyAll() {
          modelFilters.add(new DenyAllModelFilter());
          return this;
      }
  
      public ChainedModelFilter allowAll() {
          modelFilters.add(new AllowAllModelFilter());
          return this;
      }
  
      @Override
      public FilterReply decide(Model model) {
  
          for (ModelFilter modelFilter : modelFilters) {
              FilterReply reply = modelFilter.decide(model);
  
              switch (reply) {
              case ACCEPT:
              case DENY:
                  return reply;
              case NEUTRAL:
                  // next
              }
          }
          return FilterReply.NEUTRAL;
      }
  
  }