/*
 * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source 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 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.xml2.jaxp;

import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;

import org.xml.sax.Parser;
import org.xml.sax.XMLReader;
import org.xml.sax.SAXNotRecognizedException;

import com.caucho.xml2.XMLParserImpl;
import com.caucho.xml2.XMLReaderImpl;

/**
 * JAXP SAX parser factory for strict XML parsing.
 */
public class SAXParserFactoryImpl extends SAXParserFactory {
  private int _namespaces = -1;
  private int _namespacePrefixes = -1;
  private int _validation = -1;
  
  /**
   * Creates a new SAX Parser
   */
  public SAXParser newSAXParser()
  {
    return new XmlSAXParser();
  }

  /**
   * Returns a SAX property.
   */
  public Object getProperty(String key)
  {
    return null;
  }

  /**
   * Sets a SAX property.
   */
  public void setProperty(String key, Object value)
  {
  }

  /**
   * Returns a SAX feature.
   */
  public boolean getFeature(String key)
  {
    if (key.equals("http://xml.org/sax/features/namespaces"))
      return isNamespaceAware();
    else if (key.equals("http://xml.org/sax/features/namespace-prefixes"))
      return isNamespacePrefixes();
    else if (key.equals("http://xml.org/sax/features/validation"))
      return _validation != 0;
    else
      return false;
  }

  /**
   * Sets a SAX feature.
   */
  public void setFeature(String key, boolean value)
    throws SAXNotRecognizedException
  {
    if (key.equals("http://xml.org/sax/features/namespaces"))
      _namespaces = value ? 1 : 0;
    else if (key.equals("http://xml.org/sax/features/namespace-prefixes"))
      _namespacePrefixes = value ? 1 : 0;
    else if (key.equals("http://xml.org/sax/features/validation"))
      _validation = value ? 1 : 0;
    else
      throw new SAXNotRecognizedException(key);
  }

  /**
   * Returns true if namespaces prefixes are generated.
   */
  public boolean isNamespacePrefixes()
  {
    if (_namespacePrefixes >= 0)
      return _namespacePrefixes == 1;
    else if (_namespaces >= 0)
      return _namespaces == 1;
    else
      return false;
  }

  public boolean isNamespaceAware()
  {
    if (_namespacePrefixes >= 0)
      return true;
    else if (_namespaces >= 0)
      return _namespaces == 1;
    else
      return super.isNamespaceAware();
  }

  public class XmlSAXParser extends SAXParser {
    private XMLReaderImpl _reader;

    XmlSAXParser()
    {
      _reader = new XMLReaderImpl();
      /*
      _parser.setNamespaceAware(_factory.isNamespaceAware());
      _parser.setNamespacePrefixes(_factory.isNamespacePrefixes());
      // _parser.setValidating(_factory.isValidating());
      _parser.setValidating(true);
      */
    }

    /**
     * Gets a SAX property.
     */
    public Object getProperty(String name)
    {
      return null;
    }

    /**
     * Sets a SAX property.
     *
     * @param name the property name
     * @param value the property value
     */
    public void setProperty(String name, Object value)
    {
    }

    /**
     * Returns the SAX parser instance.
     */
    public Parser getParser()
    {
      return null;
    }

    /**
     * Returns the SAX XMLReader
     */
    public XMLReader getXMLReader()
    {
      return _reader;
    }

    /**
     * Returns true if the SAXParser is namespace aware.
     */
    public boolean isNamespaceAware()
    {
      return SAXParserFactoryImpl.this.isNamespaceAware();
    }
    
    /**
     * Returns true if the SAXParser is validating.
     */
    public boolean isValidating()
    {
      return SAXParserFactoryImpl.this.isValidating();
    }
  }
}
