package baf.sci;

/** This class represents a source of SCI resources.
 */
class ExternalResourceCollection extends ResourceCollection
					 implements java.io.FilenameFilter {

  ExternalResourceCollection(ResourceDir dir) {
    super(dir, "External Files");
    String[] filenames = dir.file.list(this);
    for (int i = 0; i < filenames.length; i++)
      addResourceIndex(new ExternalResourceIndex(filenames[i]));
  }

  /** The method for FilenameFilter.  Accepts filenames that fit the
   *  format for external resource files.
   */
  public boolean accept(java.io.File dir, String filename) {
    if (!dir.equals(parent.file)) return false;
    try {
      Resource.getID(filename);
      return true;
    } catch (IllegalArgumentException e) {
      return false;
    }
  }

}