1 /*
   2  * Copyright (c) 2011, 2015, 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 com.sun.javafx.util.Utils;
  29 import javafx.css.ParsedValue;
  30 import javafx.css.StyleConverter;
  31 import javafx.scene.text.Font;
  32 
  33 /**
  34  * String type converts embedded unicode characters
  35  *
  36  * @since 9
  37  */
  38 public final class StringConverter extends StyleConverter<String, String> {
  39 
  40     // lazy, thread-safe instatiation
  41     private static class Holder {
  42         static final StringConverter INSTANCE = new StringConverter();
  43         static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
  44     }
  45 
  46     public static StyleConverter<String, String> getInstance() {
  47         return Holder.INSTANCE;
  48     }
  49 
  50     private StringConverter() {
  51         super();
  52     }
  53 
  54     @Override
  55     public String convert(ParsedValue<String, String> value, Font font) {
  56         String string = value.getValue();
  57         if (string == null) {
  58             return null;
  59         } // escaping for those
  60         return Utils.convertUnicode(string);
  61     }
  62 
  63     @Override
  64     public String toString() {
  65         return "StringConverter";
  66     }
  67 
  68     public static final class SequenceConverter extends StyleConverter<ParsedValue<String, String>[], String[]> {
  69 
  70 
  71         public static SequenceConverter getInstance() {
  72             return Holder.SEQUENCE_INSTANCE;
  73         }
  74 
  75         private SequenceConverter() {
  76             super();
  77         }
  78 
  79         @Override
  80         public String[] convert(ParsedValue<ParsedValue<String, String>[], String[]> value, Font font) {
  81             ParsedValue<String, String>[] layers = value.getValue();
  82             String[] strings = new String[layers.length];
  83             for (int layer = 0; layer < layers.length; layer++) {
  84                 strings[layer] = StringConverter.getInstance().convert(layers[layer], font);
  85             }
  86             return strings;
  87         }
  88 
  89         @Override
  90         public String toString() {
  91             return "String.SequenceConverter";
  92         }
  93     }
  94 
  95 }