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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wml.dom;

import java.lang.reflect.Constructor;
import java.util.Hashtable;

import org.apache.wml.WMLDocument;
import org.apache.xerces.dom.DocumentImpl;
import org.apache.xerces.dom.ElementImpl;
import org.w3c.dom.DOMException;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;

/**
 * @xerces.internal
 * @version $Id: WMLDocumentImpl.java 890457 2009-12-14 19:47:46Z mrglavas $
 * @author David Li
 */
public class WMLDocumentImpl extends DocumentImpl implements WMLDocument {
    
    private static final long serialVersionUID = -6582904849512384104L;
    
    private static Hashtable        _elementTypesWML;
    private static final Class[]    _elemClassSigWML =
        new Class[] { WMLDocumentImpl.class, String.class };
    
    public Element createElement( String tagName ) throws DOMException
    {
        Class        elemClass;
        Constructor    cnst;
        
        elemClass = (Class) _elementTypesWML.get( tagName );
        if ( elemClass != null ) {
            try	{
                cnst = elemClass.getConstructor( _elemClassSigWML );
                return (Element) cnst.newInstance( new Object[] { this, tagName } );
            } catch ( Exception except ) {
                Throwable thrw;
                
                if ( except instanceof java.lang.reflect.InvocationTargetException )
                    thrw = ( (java.lang.reflect.InvocationTargetException) except ).getTargetException();
                else
                    thrw = except;
                
                System.out.println( "Exception " + thrw.getClass().getName() );
                System.out.println( thrw.getMessage() );
                
                throw new IllegalStateException( "Tag '" + tagName + "' associated with an Element class that failed to construct." );
            }
        }
        return new WMLElementImpl( this, tagName );
    }
    
    /* (non-Javadoc)
     * @see CoreDocumentImpl#canRenameElements()
     */
    protected boolean canRenameElements(String newNamespaceURI, String newNodeName, ElementImpl el) {
        // check whether a class change is required
        return _elementTypesWML.get(newNodeName) == _elementTypesWML.get(el.getTagName());
    }
    
    static {
        _elementTypesWML = new Hashtable();
        _elementTypesWML.put("b", WMLBElementImpl.class);
        _elementTypesWML.put("noop", WMLNoopElementImpl.class);
        _elementTypesWML.put("a", WMLAElementImpl.class);
        _elementTypesWML.put("setvar", WMLSetvarElementImpl.class);
        _elementTypesWML.put("access", WMLAccessElementImpl.class);
        _elementTypesWML.put("strong", WMLStrongElementImpl.class);
        _elementTypesWML.put("postfield", WMLPostfieldElementImpl.class);
        _elementTypesWML.put("do", WMLDoElementImpl.class);
        _elementTypesWML.put("wml", WMLWmlElementImpl.class);
        _elementTypesWML.put("tr", WMLTrElementImpl.class);
        _elementTypesWML.put("go", WMLGoElementImpl.class);
        _elementTypesWML.put("big", WMLBigElementImpl.class);
        _elementTypesWML.put("anchor", WMLAnchorElementImpl.class);
        _elementTypesWML.put("timer", WMLTimerElementImpl.class);
        _elementTypesWML.put("small", WMLSmallElementImpl.class);
        _elementTypesWML.put("optgroup", WMLOptgroupElementImpl.class);
        _elementTypesWML.put("head", WMLHeadElementImpl.class);
        _elementTypesWML.put("td", WMLTdElementImpl.class);
        _elementTypesWML.put("fieldset", WMLFieldsetElementImpl.class);
        _elementTypesWML.put("img", WMLImgElementImpl.class);
        _elementTypesWML.put("refresh", WMLRefreshElementImpl.class);
        _elementTypesWML.put("onevent", WMLOneventElementImpl.class);
        _elementTypesWML.put("input", WMLInputElementImpl.class);
        _elementTypesWML.put("prev", WMLPrevElementImpl.class);
        _elementTypesWML.put("table", WMLTableElementImpl.class);
        _elementTypesWML.put("meta", WMLMetaElementImpl.class);
        _elementTypesWML.put("template", WMLTemplateElementImpl.class);
        _elementTypesWML.put("br", WMLBrElementImpl.class);
        _elementTypesWML.put("option", WMLOptionElementImpl.class);
        _elementTypesWML.put("u", WMLUElementImpl.class);
        _elementTypesWML.put("p", WMLPElementImpl.class);
        _elementTypesWML.put("select", WMLSelectElementImpl.class);
        _elementTypesWML.put("em", WMLEmElementImpl.class);
        _elementTypesWML.put("i", WMLIElementImpl.class);
        _elementTypesWML.put("card", WMLCardElementImpl.class);       
    }
    
    /* DOM level 2 */
    public WMLDocumentImpl(DocumentType doctype) {
        super(doctype, false);
    }
}