1 /*
   2  * Copyright (c) 2010, 2013, 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.fxml.builder;
  27 
  28 import java.net.MalformedURLException;
  29 import java.net.URL;
  30 import java.util.AbstractMap;
  31 import java.util.Map;
  32 import java.util.Set;
  33 import javafx.util.Builder;
  34 
  35 /**
  36  * Builder for constructing URL instances.
  37  */
  38 public class URLBuilder extends AbstractMap<String, Object> implements Builder<URL> {
  39     private ClassLoader classLoader;
  40 
  41     private Object value = null;
  42 
  43     public static final String VALUE_KEY = "value";
  44 
  45     public URLBuilder(ClassLoader classLoader) {
  46         this.classLoader = classLoader;
  47     }
  48 
  49     @Override
  50     public Object put(String key, Object value) {
  51         if (key == null) {
  52             throw new NullPointerException();
  53         }
  54 
  55         if (key.equals(VALUE_KEY)) {
  56             this.value = value;
  57         } else {
  58             throw new IllegalArgumentException(key + " is not a valid property.");
  59         }
  60 
  61         return null;
  62     }
  63 
  64     @Override
  65     public URL build() {
  66         if (value == null) {
  67             throw new IllegalStateException();
  68         }
  69 
  70         URL url;
  71         if (value instanceof URL) {
  72             url = (URL)value;
  73         } else {
  74             String spec = value.toString();
  75 
  76             if (spec.startsWith("/")) {
  77                 url = classLoader.getResource(spec);
  78             } else {
  79                 try {
  80                     url = new URL(spec);
  81                 } catch (MalformedURLException exception) {
  82                     throw new RuntimeException(exception);
  83                 }
  84             }
  85         }
  86 
  87         return url;
  88     }
  89 
  90     @Override
  91     public Set<Map.Entry<String, Object>> entrySet() {
  92         throw new UnsupportedOperationException();
  93     }
  94 }