package jalview.api;

import java.util.Collection;
import java.util.Iterator;

public interface FeaturesDisplayedI
{

  Iterator<String> getVisibleFeatures();

  boolean isVisible(String featureType);

  boolean areVisible(Collection<String> featureTypes);

  void clear();

  void setVisible(String featureType);

  void setAllVisible(Collection<String> featureTypes);

  boolean isRegistered(String type);

  void setAllRegisteredVisible();

  int getVisibleFeatureCount();

  int getRegisterdFeaturesCount();

}