1 /*
   2  * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.nio.file;
  27 
  28 import java.nio.file.WatchEvent.Modifier;
  29 import jdk.internal.misc.FileSystemOption;
  30 
  31 /**
  32  * Defines the <em>sensitivity levels</em> when registering objects with a
  33  * watch service implementation that polls the file system.
  34  *
  35  * @since 1.7
  36  */
  37 
  38 public enum SensitivityWatchEventModifier implements Modifier {
  39     /**
  40      * High sensitivity.
  41      */
  42     HIGH(FileSystemOption.SENSITIVITY_HIGH, 2),
  43     /**
  44      * Medium sensitivity.
  45      */
  46     MEDIUM(FileSystemOption.SENSITIVITY_MEDIUM, 10),
  47     /**
  48      * Low sensitivity.
  49      */
  50     LOW(FileSystemOption.SENSITIVITY_LOW, 30);
  51 
  52     /**
  53      * Returns the sensitivity in seconds.
  54      */
  55     public int sensitivityValueInSeconds() {
  56         return sensitivity;
  57     }
  58 
  59     private final int sensitivity;
  60     private SensitivityWatchEventModifier(FileSystemOption<Integer> option,
  61                                           int sensitivity) {
  62         this.sensitivity = sensitivity;
  63         option.register(this, sensitivity);
  64     }
  65 }