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