/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``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 THE APACHE SOFTWARE FOUNDATION 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.xalan.xslt;

import org.w3c.dom.*;
import org.xml.sax.*;
import org.apache.xalan.xpath.*;
import org.apache.xalan.xpath.xml.QName;
import org.apache.xalan.xslt.res.XSLTErrorResources;

/**
 * <meta name="usage" content="advanced"/>
 * Implement xsl:template.
 */
public class ElemTemplate extends ElemTemplateElement
{
  public XPath m_matchPattern = null;
  public QName m_name = null;
  public QName m_mode;
  public double m_priority = XPath.MATCH_SCORE_NONE;

  public int getXSLToken()
  {
    return Constants.ELEMNAME_TEMPLATE;
  }

  public ElemTemplate (XSLTEngineImpl processor, // MAY BE NULL!!!
                       Stylesheet stylesheetTree,
                       String name, 
                  AttributeList atts,
                  int lineNumber, int columnNumber)
    throws SAXException
  {
    super(processor, stylesheetTree, name, atts, lineNumber, columnNumber);
    int nAttrs = atts.getLength();
    for(int i = 0; i < nAttrs; i++)
    {
      String aname = atts.getName(i);
      int tok = getAttrTok(aname);
      switch(tok)
      {
      case Constants.TATTRNAME_MATCH:
        m_matchPattern = m_stylesheet.getXPathFactory().create();
        m_stylesheet.m_xpathProcessor.initMatchPattern(m_matchPattern, atts.getValue(i), this);
        break;
      case Constants.TATTRNAME_NAME:
        m_name = new QName( atts.getValue(i), m_stylesheet.m_namespaces);
        break;
      case Constants.TATTRNAME_PRIORITY:
        String priorityVal = atts.getValue(i);
        m_priority = Double.valueOf(priorityVal.trim()).doubleValue();
        break;
      case Constants.TATTRNAME_MODE:
        m_mode = new QName( atts.getValue(i), m_stylesheet.m_namespaces);
        break;
      case Constants.TATTRNAME_XMLSPACE:
        processSpaceAttr(atts, i);
        break;
      default:
        if(!isAttrOK(aname, atts, i))
        {
          if(null != processor)
            processor.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE, new Object[] {name, aname}); //name+" has an illegal attribute: "+aname);
        }
      }
    }
    if((null == m_matchPattern) && (null != m_mode))
    {
      processor.error(XSLTErrorResources.ER_NEED_MATCH_ATTRIB, new Object[] {name}); //name+" must have a match attribute if it has a mode.");
    }
    if((null == m_matchPattern) && (null == m_name))
    {
      if(null != processor)
        processor.error(XSLTErrorResources.ER_NEED_NAME_OR_MATCH_ATTRIB, new Object[] {name}); //name+" requires either a name or a match attribute.");
    }
  }

  public void execute(XSLTEngineImpl processor, 
                      Node sourceTree, 
                      Node sourceNode,
                      QName mode)
    throws XSLProcessorException, 
           java.net.MalformedURLException, 
           java.io.FileNotFoundException, 
           java.io.IOException,
           SAXException
  {    
    super.execute(processor, sourceTree, sourceNode, mode);
    if(null != sourceNode)
    { 
      executeChildren(processor, sourceTree, sourceNode, mode);
    }
    else // if(null == sourceNode)
    {
      processor.error(this, sourceNode, 
                      XSLTErrorResources.ER_NULL_SOURCENODE_HANDLEAPPLYTEMPLATES); 
      //"sourceNode is null in handleApplyTemplatesInstruction!");
    }
  }
}