Package org.pentaho.reporting.engine.classic.core.modules.parser.ext.readhandlers

Source Code of org.pentaho.reporting.engine.classic.core.modules.parser.ext.readhandlers.SimplePageDefinitionReadHandler

/*
* 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) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.core.modules.parser.ext.readhandlers;

import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.SimplePageDefinition;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.ReportParserUtil;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.common.AbstractPropertyXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.common.ParserUtil;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;

public class SimplePageDefinitionReadHandler extends AbstractPropertyXmlReadHandler
{
  private PageReadHandler pageReadHandler;
  private int width;
  private int height;

  public SimplePageDefinitionReadHandler()
  {
  }

  protected void startParsing(final PropertyAttributes attrs)
      throws SAXException
  {
    width = ParserUtil.parseInt(attrs.getValue(getUri(), "width"), 1);
    height = ParserUtil.parseInt(attrs.getValue(getUri(), "height"), 1);
  }

  /**
   * Returns the handler for a child element.
   *
   * @param tagName the tag name.
   * @param atts    the attributes.
   * @return the handler or null, if the tagname is invalid.
   * @throws org.xml.sax.SAXException if there is a parsing error.
   */
  protected XmlReadHandler getHandlerForChild(final String uri,
                                              final String tagName,
                                              final PropertyAttributes atts)
      throws SAXException
  {
    if (isSameNamespace(uri) == false)
    {
      return null;
    }

    if ("page".equals(tagName))
    {
      pageReadHandler = new PageReadHandler();
      return pageReadHandler;
    }
    return null;
  }

  /**
   * Done parsing.
   *
   * @throws org.xml.sax.SAXException if there is a parsing error.
   */
  protected void doneParsing()
      throws SAXException
  {
    if (pageReadHandler == null)
    {
      throw new SAXException
          ("simple-page-definition element needs one page definition.");
    }

    final SimplePageDefinition pageDefinition =
        new SimplePageDefinition(pageReadHandler.getPageFormat(), width, height);
    final MasterReport report = (MasterReport)
        getRootHandler().getHelperObject(ReportParserUtil.HELPER_OBJ_REPORT_NAME);
    report.setPageDefinition(pageDefinition);
  }

  /**
   * Returns the object for this element or null, if this element does not create an object.
   *
   * @return the object.
   */
  public Object getObject()
  {
    return null;
  }

}
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