/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.io.monitor;
import java.io.File;
/**
* A listener that receives events of file system modifications.
* <p>
* Register {@link FileAlterationListener}s with a {@link FileAlterationObserver}.
*
* @see FileAlterationObserver
* @version $Id: FileAlterationListener.java 1022311 2010-10-13 22:08:56Z niallp $
* @since Commons IO 2.0
*/
public interface FileAlterationListener {
/**
* File system observer started checking event.
*
* @param observer The file system observer
*/
void onStart(final FileAlterationObserver observer);
/**
* Directory created Event.
*
* @param directory The directory created
*/
void onDirectoryCreate(final File directory);
/**
* Directory changed Event.
*
* @param directory The directory changed
*/
void onDirectoryChange(final File directory);
/**
* Directory deleted Event.
*
* @param directory The directory deleted
*/
void onDirectoryDelete(final File directory);
/**
* File created Event.
*
* @param file The file created
*/
void onFileCreate(final File file);
/**
* File changed Event.
*
* @param file The file changed
*/
void onFileChange(final File file);
/**
* File deleted Event.
*
* @param file The file deleted
*/
void onFileDelete(final File file);
/**
* File system observer finished checking event.
*
* @param observer The file system observer
*/
void onStop(final FileAlterationObserver observer);
}
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