Package org.dom4j.xpp

Source Code of org.dom4j.xpp.ProxyXmlStartTag

/*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*
* This software is open source.
* See the bottom of this file for the licence.
*/

package org.dom4j.xpp;

import org.dom4j.Attribute;
import org.dom4j.DocumentFactory;
import org.dom4j.Element;
import org.dom4j.QName;
import org.dom4j.tree.AbstractElement;
import org.gjt.xpp.XmlPullParserException;
import org.gjt.xpp.XmlStartTag;

import java.util.ArrayList;
import java.util.Iterator;

/**
* <p>
* <code>ProxyXmlStartTag</code> implements the XPP XmlSmartTag interface
* while creating a dom4j Element underneath.
* </p>
*
* @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
* @version $Revision: 1.8 $
*/
public class ProxyXmlStartTag implements XmlStartTag {
  /**
   * The element being constructed
   */
  private Element element;

  /**
   * The factory used to create new elements
   */
  private DocumentFactory factory = DocumentFactory.getInstance();

  public ProxyXmlStartTag() {
  }

  public ProxyXmlStartTag(Element element) {
    this.element = element;
  }

  // XmlStartTag interface
  // -------------------------------------------------------------------------

  public void resetStartTag() {
    this.element = null;
  }

  public int getAttributeCount() {
    return (element != null) ? element.attributeCount() : 0;
  }

  public String getAttributeNamespaceUri(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        return attribute.getNamespaceURI();
      }
    }

    return null;
  }

  public String getAttributeLocalName(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        return attribute.getName();
      }
    }

    return null;
  }

  public String getAttributePrefix(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        String prefix = attribute.getNamespacePrefix();

        if ((prefix != null) && (prefix.length() > 0)) {
          return prefix;
        }
      }
    }

    return null;
  }

  public String getAttributeRawName(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        return attribute.getQualifiedName();
      }
    }

    return null;
  }

  public String getAttributeValue(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        return attribute.getValue();
      }
    }

    return null;
  }

  public String getAttributeValueFromRawName(String rawName) {
    if (element != null) {
      for (Iterator iter = element.attributeIterator(); iter.hasNext();) {
        Attribute attribute = (Attribute) iter.next();

        if (rawName.equals(attribute.getQualifiedName())) {
          return attribute.getValue();
        }
      }
    }

    return null;
  }

  public String getAttributeValueFromName(String namespaceURI,
                                          String localName) {
    if (element != null) {
      for (Iterator iter = element.attributeIterator(); iter.hasNext();) {
        Attribute attribute = (Attribute) iter.next();

        if (namespaceURI.equals(attribute.getNamespaceURI())
            && localName.equals(attribute.getName())) {
          return attribute.getValue();
        }
      }
    }

    return null;
  }

  public boolean isAttributeNamespaceDeclaration(int index) {
    if (element != null) {
      Attribute attribute = element.attribute(index);

      if (attribute != null) {
        return "xmlns".equals(attribute.getNamespacePrefix());
      }
    }

    return false;
  }

  /**
   * parameters modeled after SAX2 attribute approach
   *
   * @param namespaceURI DOCUMENT ME!
   * @param localName    DOCUMENT ME!
   * @param rawName      DOCUMENT ME!
   * @param value        DOCUMENT ME!
   * @throws XmlPullParserException DOCUMENT ME!
   */
  public void addAttribute(String namespaceURI, String localName,
                           String rawName, String value) throws XmlPullParserException {
    QName qname = QName.get(rawName, namespaceURI);
    element.addAttribute(qname, value);
  }

  public void addAttribute(String namespaceURI, String localName,
                           String rawName, String value, boolean isNamespaceDeclaration)
      throws XmlPullParserException {
    if (isNamespaceDeclaration) {
      String prefix = "";
      int idx = rawName.indexOf(':');

      if (idx > 0) {
        prefix = rawName.substring(0, idx);
      }

      element.addNamespace(prefix, namespaceURI);
    } else {
      QName qname = QName.get(rawName, namespaceURI);
      element.addAttribute(qname, value);
    }
  }

  public void ensureAttributesCapacity(int minCapacity)
      throws XmlPullParserException {
    if (element instanceof AbstractElement) {
      AbstractElement elementImpl = (AbstractElement) element;
      elementImpl.ensureAttributesCapacity(minCapacity);
    }
  }

  /**
   * remove all atribute
   *
   * @throws XmlPullParserException DOCUMENT ME!
   */
  public void removeAttributes() throws XmlPullParserException {
    if (element != null) {
      element.setAttributes(new ArrayList<Attribute>());

      // ##### FIXME
      // adding this method would be nice...
      // element.clearAttributes();
    }
  }

  public String getLocalName() {
    return element.getName();
  }

  public String getNamespaceUri() {
    return element.getNamespaceURI();
  }

  public String getPrefix() {
    return element.getNamespacePrefix();
  }

  public String getRawName() {
    return element.getQualifiedName();
  }

  public void modifyTag(String namespaceURI, String lName, String rawName) {
    this.element = factory.createElement(rawName, namespaceURI);
  }

  public void resetTag() {
    this.element = null;
  }

  // Properties
  // -------------------------------------------------------------------------

  public DocumentFactory getDocumentFactory() {
    return factory;
  }

  public void setDocumentFactory(DocumentFactory documentFactory) {
    this.factory = documentFactory;
  }

  public Element getElement() {
    return element;
  }

  public boolean removeAttributeByName(String arg0, String arg1) throws XmlPullParserException {
    //TODO
    throw new UnsupportedOperationException("Not supported yet.");
  }

  public boolean removeAttributeByRawName(String arg0) throws XmlPullParserException {
    //TODO
    throw new UnsupportedOperationException("Not supported yet.");
  }
}

/*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "DOM4J" must not be used to endorse or promote products derived
* from this Software without prior written permission of MetaStuff, Ltd. For
* written permission, please contact dom4j-info@metastuff.com.
*
* 4. Products derived from this Software may not be called "DOM4J" nor may
* "DOM4J" appear in their names without prior written permission of MetaStuff,
* Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
*
* 5. Due credit should be given to the DOM4J Project - http://dom4j.sourceforge.net
*
* THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
*/ 
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