1 /*
   2  * Copyright (c) 2014, 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 javafx.css.converter;
  27 
  28 import javafx.css.Size;
  29 import javafx.css.ParsedValue;
  30 import javafx.css.StyleConverter;
  31 import javafx.scene.text.Font;
  32 import javafx.util.Duration;
  33 
  34 /**
  35  * Convert a Size to Duration
  36  *
  37  * @since 9
  38  */
  39 public final class DurationConverter extends StyleConverter<ParsedValue<?, Size>, Duration> {
  40 
  41     // lazy, thread-safe instatiation
  42     private static class Holder {
  43         static final DurationConverter INSTANCE = new DurationConverter();
  44     }
  45 
  46     public static StyleConverter<ParsedValue<?, Size>, Duration> getInstance() {
  47         return Holder.INSTANCE;
  48     }
  49 
  50     private DurationConverter() {
  51         super();
  52     }
  53 
  54     @Override
  55     public Duration convert(ParsedValue<ParsedValue<?, Size>, Duration> value, Font font) {
  56         ParsedValue<?, Size> parsedValue = value.getValue();
  57         Size size = parsedValue.convert(font);
  58         double time = size.getValue();
  59         Duration duration = null;
  60         if (time < Double.POSITIVE_INFINITY) {
  61             switch (size.getUnits()) {
  62                 case S:  duration = Duration.seconds(time); break;
  63                 case MS: duration = Duration.millis(time);  break;
  64                 default: duration = Duration.UNKNOWN;
  65             }
  66         } else {
  67             duration = Duration.INDEFINITE;
  68         }
  69         return duration;
  70     }
  71 
  72     @Override
  73     public String toString() {
  74         return "DurationConverter";
  75     }
  76 
  77 }