ProxyXmlStartTag xref

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    1   /*
    2    * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
    3    *
    4    * This software is open source.
    5    * See the bottom of this file for the licence.
    6    */
    7
    8   package org.dom4j.xpp;
    9
    10  import java.util.ArrayList;
    11  import java.util.Iterator;
    12
    13  import org.dom4j.Attribute;
    14  import org.dom4j.DocumentFactory;
    15  import org.dom4j.Element;
    16  import org.dom4j.QName;
    17  import org.dom4j.tree.AbstractElement;
    18
    19  import org.gjt.xpp.XmlPullParserException;
    20  import org.gjt.xpp.XmlStartTag;
    21
    22  /***
    23   * <code>ProxyXmlStartTag</code> implements the XPP <code>XmlSmartTag</code>
    24   * interface while creating a dom4j <code>Element</code> underneath.
    25   *
    26   * @author James Strachan
    27   * @author Maarten Coene
    28   * @author Wolfgang Baer
    29   */
    30  public class ProxyXmlStartTag implements XmlStartTag {
    31      /*** The element being constructed */
    32      private Element element;
    33
    34      /*** The factory used to create new elements */
    35      private DocumentFactory factory = DocumentFactory.getInstance();
    36
    37      public ProxyXmlStartTag() {
    38      }
    39
    40      public ProxyXmlStartTag(Element element) {
    41          this.element = element;
    42      }
    43
    44      // XmlStartTag interface
    45      // -------------------------------------------------------------------------
    46      public void resetStartTag() {
    47          this.element = null;
    48      }
    49
    50      public int getAttributeCount() {
    51          return (element != null) ? element.attributeCount() : 0;
    52      }
    53
    54      public String getAttributeNamespaceUri(int index) {
    55          if (element != null) {
    56              Attribute attribute = element.attribute(index);
    57
    58              if (attribute != null) {
    59                  return attribute.getNamespaceURI();
    60              }
    61          }
    62
    63          return null;
    64      }
    65
    66      public String getAttributeLocalName(int index) {
    67          if (element != null) {
    68              Attribute attribute = element.attribute(index);
    69
    70              if (attribute != null) {
    71                  return attribute.getName();
    72              }
    73          }
    74
    75          return null;
    76      }
    77
    78      public String getAttributePrefix(int index) {
    79          if (element != null) {
    80              Attribute attribute = element.attribute(index);
    81
    82              if (attribute != null) {
    83                  String prefix = attribute.getNamespacePrefix();
    84
    85                  if ((prefix != null) && (prefix.length() > 0)) {
    86                      return prefix;
    87                  }
    88              }
    89          }
    90
    91          return null;
    92      }
    93
    94      public String getAttributeRawName(int index) {
    95          if (element != null) {
    96              Attribute attribute = element.attribute(index);
    97
    98              if (attribute != null) {
    99                  return attribute.getQualifiedName();
    100             }
    101         }
    102
    103         return null;
    104     }
    105
    106     public String getAttributeValue(int index) {
    107         if (element != null) {
    108             Attribute attribute = element.attribute(index);
    109
    110             if (attribute != null) {
    111                 return attribute.getValue();
    112             }
    113         }
    114
    115         return null;
    116     }
    117
    118     public String getAttributeValueFromRawName(String rawName) {
    119         if (element != null) {
    120             for (Iterator iter = element.attributeIterator(); iter.hasNext();) {
    121                 Attribute attribute = (Attribute) iter.next();
    122
    123                 if (rawName.equals(attribute.getQualifiedName())) {
    124                     return attribute.getValue();
    125                 }
    126             }
    127         }
    128
    129         return null;
    130     }
    131
    132     public String getAttributeValueFromName(String namespaceURI,
    133             String localName) {
    134         if (element != null) {
    135             for (Iterator iter = element.attributeIterator(); iter.hasNext();) {
    136                 Attribute attribute = (Attribute) iter.next();
    137
    138                 if (namespaceURI.equals(attribute.getNamespaceURI())
    139                         && localName.equals(attribute.getName())) {
    140                     return attribute.getValue();
    141                 }
    142             }
    143         }
    144
    145         return null;
    146     }
    147
    148     public boolean isAttributeNamespaceDeclaration(int index) {
    149         if (element != null) {
    150             Attribute attribute = element.attribute(index);
    151
    152             if (attribute != null) {
    153                 return "xmlns".equals(attribute.getNamespacePrefix());
    154             }
    155         }
    156
    157         return false;
    158     }
    159
    160     /***
    161      * parameters modeled after SAX2 attribute approach
    162      *
    163      * @param namespaceURI DOCUMENT ME!
    164      * @param localName DOCUMENT ME!
    165      * @param rawName DOCUMENT ME!
    166      * @param value DOCUMENT ME!
    167      *
    168      * @throws XmlPullParserException DOCUMENT ME!
    169      */
    170     public void addAttribute(String namespaceURI, String localName,
    171             String rawName, String value) throws XmlPullParserException {
    172         QName qname = QName.get(rawName, namespaceURI);
    173         element.addAttribute(qname, value);
    174     }
    175
    176     public void addAttribute(String namespaceURI, String localName,
    177             String rawName, String value, boolean isNamespaceDeclaration)
    178             throws XmlPullParserException {
    179         if (isNamespaceDeclaration) {
    180             String prefix = "";
    181             int idx = rawName.indexOf(':');
    182
    183             if (idx > 0) {
    184                 prefix = rawName.substring(0, idx);
    185             }
    186
    187             element.addNamespace(prefix, namespaceURI);
    188         } else {
    189             QName qname = QName.get(rawName, namespaceURI);
    190             element.addAttribute(qname, value);
    191         }
    192     }
    193
    194     public void ensureAttributesCapacity(int minCapacity)
    195             throws XmlPullParserException {
    196         if (element instanceof AbstractElement) {
    197             AbstractElement elementImpl = (AbstractElement) element;
    198             elementImpl.ensureAttributesCapacity(minCapacity);
    199         }
    200     }
    201
    202     /***
    203      * Remove all atributes.
    204      *
    205      * @deprecated Use {@link #removeAttributes()} instead.
    206      */
    207     public void removeAtttributes() throws XmlPullParserException {
    208         removeAttributes();
    209     }
    210
    211     public void removeAttributes() throws XmlPullParserException {
    212         if (element != null) {
    213             element.setAttributes(new ArrayList());
    214
    215             // ##### FIXME
    216             // adding this method would be nice...
    217             // element.clearAttributes();
    218         }
    219     }
    220
    221     public String getLocalName() {
    222         return element.getName();
    223     }
    224
    225     public String getNamespaceUri() {
    226         return element.getNamespaceURI();
    227     }
    228
    229     public String getPrefix() {
    230         return element.getNamespacePrefix();
    231     }
    232
    233     public String getRawName() {
    234         return element.getQualifiedName();
    235     }
    236
    237     public void modifyTag(String namespaceURI, String lName, String rawName) {
    238         this.element = factory.createElement(rawName, namespaceURI);
    239     }
    240
    241     public void resetTag() {
    242         this.element = null;
    243     }
    244
    245     public boolean removeAttributeByName(String namespaceURI, String localName)
    246             throws XmlPullParserException {
    247         if (element != null) {
    248             QName qname = QName.get(localName, namespaceURI);
    249             Attribute attribute = element.attribute(qname);
    250             return element.remove(attribute);
    251         }
    252         return false;
    253     }
    254
    255     public boolean removeAttributeByRawName(String rawName)
    256             throws XmlPullParserException {
    257         if (element != null) {
    258             Attribute attribute = null;
    259             Iterator it = element.attributeIterator();
    260             while (it.hasNext()) {
    261                 Attribute current = (Attribute) it.next();
    262                 if (current.getQualifiedName().equals(rawName)) {
    263                     attribute = current;
    264                     break;
    265                 }
    266             }
    267             return element.remove(attribute);
    268         }
    269         return false;
    270     }
    271
    272     // Properties
    273     // -------------------------------------------------------------------------
    274     public DocumentFactory getDocumentFactory() {
    275         return factory;
    276     }
    277
    278     public void setDocumentFactory(DocumentFactory documentFactory) {
    279         this.factory = documentFactory;
    280     }
    281
    282     public Element getElement() {
    283         return element;
    284     }
    285 }
    286
    287 /*
    288  * Redistribution and use of this software and associated documentation
    289  * ("Software"), with or without modification, are permitted provided that the
    290  * following conditions are met:
    291  *
    292  * 1. Redistributions of source code must retain copyright statements and
    293  * notices. Redistributions must also contain a copy of this document.
    294  *
    295  * 2. Redistributions in binary form must reproduce the above copyright notice,
    296  * this list of conditions and the following disclaimer in the documentation
    297  * and/or other materials provided with the distribution.
    298  *
    299  * 3. The name "DOM4J" must not be used to endorse or promote products derived
    300  * from this Software without prior written permission of MetaStuff, Ltd. For
    301  * written permission, please contact dom4j-info@metastuff.com.
    302  *
    303  * 4. Products derived from this Software may not be called "DOM4J" nor may
    304  * "DOM4J" appear in their names without prior written permission of MetaStuff,
    305  * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
    306  *
    307  * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
    308  *
    309  * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
    310  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    311  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    312  * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
    313  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    314  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    315  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    316  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    317  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    318  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    319  * POSSIBILITY OF SUCH DAMAGE.
    320  *
    321  * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
    322  */