/* $RCSfile$
 * $Author: hansonr $
 * $Date: 2010-04-13 22:22:44 -0500 (Tue, 13 Apr 2010) $
 * $Revision: 12851 $
 *
 * Copyright (C) 2004-2005  The Jmol Development Team
 *
 * Contact: jmol-developers@lists.sf.net
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */


import java.applet.Applet;
import java.awt.Event;
import java.awt.Graphics;
import java.util.BitSet;

import org.jmol.util.Logger;
import org.jmol.smiles.InvalidSmilesException;
import org.jmol.smiles.SmilesMatcher;

public class JmolSmilesApplet extends Applet {

  @Override
  public void init() {
    System.out.println("JmolSmilesApplet init");
  }

  private static String lastError;

  /**
   * 
   * @return last error generated by the find command
   * 
   */
  public String getLastError() {
    return lastError;
  }
  
  /**
   * set debugging on or off
   * 
   * @param TF
   */
  public void setDebug(boolean TF) {
    Logger.setLogLevel(TF ? Logger.LEVEL_DEBUG : Logger.LEVEL_INFO);
  }
  
  /**
   * When used for student answer checking, the student's response
   * is the SMILES and the key is the PATTERN -- that is, we seek
   * to know if the correct answer (pattern) is IN the student's
   * answer (smiles).  
   * @param pattern
   * @param smiles
   * @param isSmarts
   * @param isAll set TRUE if you want a full count
   * @return    n>0 with isAll TRUE: found n occurances, 
   *               1: found at least 1, 0: not found, -1: error
   */
  public int find(String pattern, String smiles, boolean isSmarts, boolean isAll) {
    System.out.println("find " + pattern + " in " + smiles + " isSmarts? "
        + isSmarts + "; isAll? " + isAll);
    lastError = null;
    int ret = -1;
    try {
      SmilesMatcher sm = new SmilesMatcher();
      BitSet[] result = sm.find(pattern, smiles, isSmarts, !isAll);
      if (result == null)
        lastError = InvalidSmilesException.getLastError();
      ret = (result == null ? -1 : result.length);
    } catch (Exception e) {
      e.printStackTrace();
    } catch (Error er) {
      er.printStackTrace();
    }
    return ret;
  }

  @Override
  public String getAppletInfo() {
    return "JmolSmilesApplet";
  }
  
  @Override
  public void update(Graphics g) {}
  @Override
  public void paint(Graphics g) {}
  @Override
  public boolean handleEvent(Event e) {
    return false;
  }
  
  @Override
  public void destroy() {
    System.out.println("JmolSmilesApplet destroyed");
  }

}