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/* GnomeElement.java -

   Copyright (C) 2004 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package gnu.xml.libxmlj.dom;

import gnu.java.lang.CPStringBuilder;

import java.util.HashSet;

import java.util.Set;

import org.w3c.dom.Attr;

import org.w3c.dom.DOMException;

import org.w3c.dom.Element;

import org.w3c.dom.NodeList;

import org.w3c.dom.TypeInfo;

/**

 * A DOM element node implemented in libxml2.

 *

 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>

 */

class GnomeElement

  extends GnomeNode

  implements Element

{

  /**

   * User-defined ID attributes.

   */

  Set userIdAttrs;

  GnomeElement(Object id)

  {

    super(id);

  }

  public String getTagName()

  {

    return getNodeName();

  }

  public native String getAttribute(String name);

  public native void setAttribute(String name, String value)

    throws DOMException;

  public void removeAttribute(String name)

    throws DOMException

  {

    Attr attr = getAttributeNode(name);

    if (attr != null)

      {

        removeAttributeNode(attr);

      }

  }

  public native Attr getAttributeNode(String name);

  public native Attr setAttributeNode(Attr newAttr)

    throws DOMException;

  public native Attr removeAttributeNode(Attr oldAttr)

    throws DOMException;

  public native NodeList getElementsByTagName(String name);

  public native String getAttributeNS(String namespaceURI, String localName);

  public native void setAttributeNS(String namespaceURI, String

                                    qualifiedName, String value)

    throws DOMException;

  public void removeAttributeNS(String namespaceURI, String localName)

    throws DOMException

  {

    Attr attr = getAttributeNodeNS(namespaceURI, localName);

    if (attr != null)

      {

        removeAttributeNode(attr);

      }

  }

  public native Attr getAttributeNodeNS(String namespaceURI,

                                        String localName);

  public native Attr setAttributeNodeNS(Attr newAttr)

    throws DOMException;

  public native NodeList getElementsByTagNameNS(String namespaceURI,

                                                String localName);

  public native boolean hasAttribute(String name);

  public native boolean hasAttributeNS(String namespaceURI,

                                       String localName);

  // DOM Level 3 methods

  public TypeInfo getSchemaTypeInfo()

  {

    return new GnomeTypeInfo(id);

  }

  public void setIdAttribute(String name, boolean isId)

  {

    Attr attr = getAttributeNode(name);

    setIdAttributeNode(attr, isId);

  }

  public void setIdAttributeNode(Attr attr, boolean isId)

  {

    if (attr == null)// FIXME || !attr.getOwnerElement().equals(this))

      {

        throw new GnomeDOMException(DOMException.NOT_FOUND_ERR, null);

      }

    if (isId)

      {

        if (userIdAttrs == null)

          {

            userIdAttrs = new HashSet();

          }

        userIdAttrs.add(attr);

      }

    else if (userIdAttrs != null)

      {

        userIdAttrs.remove(attr);

        if (userIdAttrs.isEmpty())

          {

            userIdAttrs = null;

          }

      }

  }

  public void setIdAttributeNS(String namespaceURI, String localName,

                               boolean isId)

  {

    Attr attr = getAttributeNodeNS(namespaceURI, localName);

    setIdAttributeNode(attr, isId);

  }

  public String toString()

  {

    CPStringBuilder buffer = new CPStringBuilder(getClass().getName());

    buffer.append("[tagName=");

    buffer.append(getTagName());

    buffer.append("]");

    return buffer.toString();

  }

}