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