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1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 /** |
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27 * |
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28 * @author SAAJ RI Development Team |
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29 */ |
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30 package com.sun.xml.internal.messaging.saaj.util; |
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31 |
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32 import java.util.Iterator; |
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33 import java.util.NoSuchElementException; |
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34 |
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35 import org.w3c.dom.*; |
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36 |
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37 public class NamespaceContextIterator implements Iterator { |
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38 Node context; |
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39 NamedNodeMap attributes = null; |
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40 int attributesLength; |
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41 int attributeIndex; |
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42 Attr next = null; |
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43 Attr last = null; |
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44 boolean traverseStack = true; |
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45 |
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46 public NamespaceContextIterator(Node context) { |
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47 this.context = context; |
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48 findContextAttributes(); |
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49 } |
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50 |
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51 public NamespaceContextIterator(Node context, boolean traverseStack) { |
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52 this(context); |
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53 this.traverseStack = traverseStack; |
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54 } |
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55 |
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56 protected void findContextAttributes() { |
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57 while (context != null) { |
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58 int type = context.getNodeType(); |
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59 if (type == Node.ELEMENT_NODE) { |
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60 attributes = context.getAttributes(); |
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61 attributesLength = attributes.getLength(); |
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62 attributeIndex = 0; |
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63 return; |
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64 } else { |
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65 context = null; |
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66 } |
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67 } |
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68 } |
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69 |
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70 protected void findNext() { |
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71 while (next == null && context != null) { |
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72 for (; attributeIndex < attributesLength; ++attributeIndex) { |
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73 Node currentAttribute = attributes.item(attributeIndex); |
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74 String attributeName = currentAttribute.getNodeName(); |
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75 if (attributeName.startsWith("xmlns") |
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76 && (attributeName.length() == 5 |
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77 || attributeName.charAt(5) == ':')) { |
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78 next = (Attr) currentAttribute; |
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79 ++attributeIndex; |
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80 return; |
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81 } |
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82 } |
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83 if (traverseStack) { |
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84 context = context.getParentNode(); |
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85 findContextAttributes(); |
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86 } else { |
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87 context = null; |
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88 } |
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89 } |
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90 } |
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91 |
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92 public boolean hasNext() { |
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93 findNext(); |
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94 return next != null; |
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95 } |
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96 |
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97 public Object next() { |
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98 return getNext(); |
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99 } |
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100 |
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101 public Attr nextNamespaceAttr() { |
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102 return getNext(); |
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103 } |
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104 |
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105 protected Attr getNext() { |
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106 findNext(); |
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107 if (next == null) { |
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108 throw new NoSuchElementException(); |
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109 } |
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110 last = next; |
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111 next = null; |
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112 return last; |
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113 } |
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114 |
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115 public void remove() { |
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116 if (last == null) { |
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117 throw new IllegalStateException(); |
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118 } |
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119 ((Element) context).removeAttributeNode(last); |
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120 } |
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121 |
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122 } |