package baf.sci;

import java.io.*;
import java.util.Vector;
import com.sun.java.swing.tree.*;

/** A representation of a directory in which SCI resources can be found.
 */
public class ResourceDir implements TreeNode {

  File file;

  Vector collections;

  public ResourceDir(String path) {
    file = new File(path);
    collections = new Vector();

    // Collect resources in the current directory
    collections.addElement(new ExternalResourceCollection(this));

    // Read resource.map and create all of its ResourceIndices
    File map = new File(file, "resource.map");
    try {
      InputStream in = 
	new BufferedInputStream(new FileInputStream(map));
      int end = 0; // the smallest nonexistent resource file #
      while (true) {
	InternalResourceIndex residx = new InternalResourceIndex(in);
	while (residx.resfilenum >= end) {
	  collections.addElement(new ResourceCollection(this, end));
	  end++;
	}
	ResourceCollection coll =
	  (ResourceCollection)collections.elementAt(residx.resfilenum+1);
	coll.addResourceIndex(residx);
      }
    } catch (IOException e) {
      if (!(e instanceof EOFException))
	e.printStackTrace();
    }
  }

  public String toString() {
    return file.toString();
  }

  /* TreeNode functions */

  public TreeNode getChildAt(int i) {
    return (TreeNode)collections.elementAt(i);
  }

  public int getChildCount() {
    return collections.size();
  }

  public TreeNode getParent() {
    return null;
  }

  public int getIndex(TreeNode node) {
    return collections.indexOf(node);
  }

  public boolean getAllowsChildren() {
    return true;
  }

  public boolean isLeaf() {
    return false;
  }

  public java.util.Enumeration children() {
    return collections.elements();
  }

}