001/*
002 * This file is part of McIDAS-V
003 *
004 * Copyright 2007-2024
005 * Space Science and Engineering Center (SSEC)
006 * University of Wisconsin - Madison
007 * 1225 W. Dayton Street, Madison, WI 53706, USA
008 * https://www.ssec.wisc.edu/mcidas/
009 * 
010 * All Rights Reserved
011 * 
012 * McIDAS-V is built on Unidata's IDV and SSEC's VisAD libraries, and
013 * some McIDAS-V source code is based on IDV and VisAD source code.  
014 * 
015 * McIDAS-V is free software; you can redistribute it and/or modify
016 * it under the terms of the GNU Lesser Public License as published by
017 * the Free Software Foundation; either version 3 of the License, or
018 * (at your option) any later version.
019 * 
020 * McIDAS-V is distributed in the hope that it will be useful,
021 * but WITHOUT ANY WARRANTY; without even the implied warranty of
022 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
023 * GNU Lesser Public License for more details.
024 * 
025 * You should have received a copy of the GNU Lesser Public License
026 * along with this program.  If not, see https://www.gnu.org/licenses/.
027 */
028
029package edu.wisc.ssec.mcidasv.util.pathwatcher;
030
031// Taken from https://gist.github.com/hindol-viz/394ebc553673e2cd0699
032
033/**
034 * Interface definition for a callback to be invoked when a file under
035 * watch is changed.
036 */
037public interface OnFileChangeListener {
038    
039    /**
040     * Called when a file is created.
041     *
042     * @param filePath Path to file that was created.
043     */
044    default void onFileCreate(String filePath) {}
045    
046    /**
047     * Called when a file is modified.
048     *
049     * @param filePath Path to file that was modified.
050     */
051    default void onFileModify(String filePath) {}
052    
053    /**
054     * Called when a file is deleted.
055     *
056     * @param filePath Path to file that was removed.
057     */
058    default void onFileDelete(String filePath) {}
059    
060    /**
061     * Called when the path being watched has been deleted.
062     * 
063     * @param filePath Path that was being watched.
064     */
065    default void onWatchInvalidation(String filePath) {}
066}