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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.html.dom;

import org.w3c.dom.Node;
import org.w3c.dom.html.HTMLCollection;
import org.w3c.dom.html.HTMLElement;
import org.w3c.dom.html.HTMLTableRowElement;
import org.w3c.dom.html.HTMLTableSectionElement;

/**
 * @xerces.internal
 * @version $Revision: 1029415 $ $Date: 2010-10-31 13:02:22 -0400 (Sun, 31 Oct 2010) $
 * @author Assaf Arkin
 * @see org.w3c.dom.html.HTMLTableSectionElement
 * @see org.apache.xerces.dom.ElementImpl
 */
public class HTMLTableSectionElementImpl
    extends HTMLElementImpl
    implements HTMLTableSectionElement
{    

    private static final long serialVersionUID = 1016412997716618027L;

    public String getAlign()
    {
        return capitalize( getAttribute( "align" ) );
    }
    
    
    public void setAlign( String align )
    {
        setAttribute( "align", align );
    }
      
    
    public String getCh()
    {
        String    ch;
        
        // Make sure that the access key is a single character.
        ch = getAttribute( "char" );
        if ( ch != null && ch.length() > 1 )
            ch = ch.substring( 0, 1 );
        return ch;
    }
    
    
    public void setCh( String ch )
    {
        // Make sure that the access key is a single character.
        if ( ch != null && ch.length() > 1 )
            ch = ch.substring( 0, 1 );
        setAttribute( "char", ch );
    }

    
    public String getChOff()
    {
        return getAttribute( "charoff" );
    }
    
    
    public void setChOff( String chOff )
    {
        setAttribute( "charoff", chOff );
    }
  
  
    public String getVAlign()
    {
        return capitalize( getAttribute( "valign" ) );
    }
    
    
    public void setVAlign( String vAlign )
    {
        setAttribute( "valign", vAlign );
    }

    
    public HTMLCollection getRows()
    {
        if ( _rows == null )
            _rows = new HTMLCollectionImpl( this, HTMLCollectionImpl.ROW );
        return _rows;
    }
    
    
    public HTMLElement insertRow( int index )
    {
        HTMLTableRowElementImpl    newRow;
        
        newRow = new HTMLTableRowElementImpl( (HTMLDocumentImpl) getOwnerDocument(), "TR" );
        newRow.insertCell( 0 );
        if ( insertRowX( index, newRow ) >= 0 )
            appendChild( newRow );
        return newRow;
    }
    
    
    int insertRowX( int index, HTMLTableRowElementImpl newRow )
    {
        Node    child;
        
        child = getFirstChild();
        while ( child != null )
        {
            if ( child instanceof HTMLTableRowElement )
            {
                if ( index == 0 )
                {
                    insertBefore( newRow, child );
                    return -1;
                }
                --index;
            }
            child = child.getNextSibling();
        }
        return index;
    }

    
    public void deleteRow( int index )
    {
        deleteRowX( index );
    }

    
    int deleteRowX( int index )
    {
        Node    child;
        
        child = getFirstChild();
        while ( child != null )
        {
            if ( child instanceof HTMLTableRowElement )
            {
                if ( index == 0 )
                {
                    removeChild ( child );
                    return -1;
                }
                --index;
            }
            child = child.getNextSibling();
        }
        return index;
    }
    
    /**
     * Explicit implementation of cloneNode() to ensure that cache used
     * for getRows() gets cleared.
     */
    public Node cloneNode( boolean deep ) {
        HTMLTableSectionElementImpl clonedNode = (HTMLTableSectionElementImpl)super.cloneNode( deep );
        clonedNode._rows = null;
        return clonedNode;
    }
    
    /**
     * Constructor requires owner document.
     * 
     * @param owner The owner HTML document
     */
    public HTMLTableSectionElementImpl( HTMLDocumentImpl owner, String name )
    {
        super( owner, name );
    }

  
    private HTMLCollectionImpl    _rows;


}