/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.designer.core.editor.drilldown.parser;

import org.pentaho.reporting.designer.core.editor.drilldown.model.ParameterSelection;
import org.pentaho.reporting.libraries.base.util.StringUtils;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
 * Todo: Document me!
 * <p/>
 * Date: 13.08.2010 Time: 17:34:04
 *
 * @author Thomas Morgner.
 */
public class ParameterValueReadHandler extends AbstractXmlReadHandler {
  private ParameterSelection selection;
  private String parameterType;

  public ParameterValueReadHandler( final String parameterType ) {
    this.parameterType = parameterType;
  }

  /**
   * Starts parsing.
   *
   * @param attrs the attributes.
   * @throws org.xml.sax.SAXException if there is a parsing error.
   */
  protected void startParsing( final Attributes attrs ) throws SAXException {
    final String label = attrs.getValue( getUri(), "label" ); // NON-NLS
    final String value = attrs.getValue( getUri(), "value" ); // NON-NLS
    String type = attrs.getValue( getUri(), "type" ); // NON-NLS
    if ( StringUtils.isEmpty( type ) ) {
      type = parameterType;
    }
    final boolean selected = "true".equals( attrs.getValue( getUri(), "selected" ) ); // NON-NLS

    selection = new ParameterSelection( type, value, selected, label );
  }

  /**
   * Returns the object for this element or null, if this element does not create an object.
   *
   * @return the object.
   * @throws org.xml.sax.SAXException if an parser error occured.
   */
  public Object getObject() throws SAXException {
    return selection;
  }

  public ParameterSelection getSelection() {
    return selection;
  }
}