001 /** 002 * ProgressListener.java 003 * jCOLIBRI2 framework. 004 * @author Juan A. Recio-García. 005 * GAIA - Group for Artificial Intelligence Applications 006 * http://gaia.fdi.ucm.es 007 * 11/01/2007 008 */ 009 package jcolibri.util; 010 011 /** 012 * Interface implemented by the listeners of a progress. 013 * The implementations of this interface must register in the ProgressController to recieve the progress. 014 * @author Juan A. Recio-Garcia 015 * @version 1.0 016 * @see jcolibri.util.ProgressController 017 */ 018 public interface ProgressListener { 019 020 /** 021 * Method call when a progress begins. 022 * @param info Some textual info 023 * @param numberOfSteps Estimated number of steps (-1 if unknown). 024 */ 025 public void init(String info, int numberOfSteps); 026 027 /** 028 * An step executed. 029 */ 030 public void step(); 031 032 /** 033 * Process finished. 034 */ 035 public void finish(); 036 }