1 /*
   2  * Copyright (c) 2012, 2014, Oracle and/or its affiliates.
   3  * All rights reserved. Use is subject to license terms.
   4  *
   5  * This file is available and licensed under the following license:
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  *  - Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *  - Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the distribution.
  16  *  - Neither the name of Oracle Corporation nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 package com.oracle.javafx.scenebuilder.kit.fxom;
  33 
  34 import java.util.Collections;
  35 import java.util.Enumeration;
  36 import java.util.Iterator;
  37 import java.util.MissingResourceException;
  38 import java.util.ResourceBundle;
  39 import javafx.fxml.FXMLLoader;
  40 
  41 /**
  42  *
  43  *
  44  */
  45 class ResourceKeyCollector extends ResourceBundle {
  46 
  47     private final ResourceBundle backingResources;
  48 
  49     public ResourceKeyCollector(ResourceBundle backingResources) {
  50         this.backingResources = backingResources;
  51     }
  52 
  53     /*
  54      * ResourceBundle
  55      */
  56 
  57     @Override
  58     protected Object handleGetObject(String key) {
  59         Object result;
  60 
  61         if (backingResources != null) {
  62             try {
  63                 result = backingResources.getObject(key);
  64             } catch(MissingResourceException x) {
  65                 result = null;
  66             }
  67         } else {
  68             result = null;
  69         }
  70         if (result == null) {
  71             result = FXMLLoader.RESOURCE_KEY_PREFIX + key;
  72         }
  73 
  74         return result;
  75     }
  76 
  77     @Override
  78     public Enumeration<String> getKeys() {
  79         return new EnumerationFromIterator<>(Collections.emptyListIterator());
  80     }
  81 
  82     @Override
  83     public boolean containsKey(String key) {
  84         return true;
  85     }
  86 
  87 
  88     private static class EnumerationFromIterator<T> implements Enumeration<T> {
  89 
  90         private final Iterator<T> iterator;
  91 
  92         public EnumerationFromIterator(Iterator<T> iterator) {
  93             this.iterator = iterator;
  94         }
  95 
  96         @Override
  97         public boolean hasMoreElements() {
  98             return iterator.hasNext();
  99         }
 100 
 101         @Override
 102         public T nextElement() {
 103             return iterator.next();
 104         }
 105 
 106     }
 107 }