/*!
 * 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.engine.classic.core.parameters;

import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.DataRow;
import org.pentaho.reporting.engine.classic.core.ReportProcessingException;
import org.pentaho.reporting.engine.classic.core.ResourceBundleFactory;
import org.pentaho.reporting.engine.classic.core.function.ExpressionRuntime;
import org.pentaho.reporting.engine.classic.core.function.ProcessingContext;
import org.pentaho.reporting.engine.classic.core.layout.output.DefaultProcessingContext;
import org.pentaho.reporting.engine.classic.core.layout.output.GenericOutputProcessorMetaData;
import org.pentaho.reporting.engine.classic.core.states.datarow.EmptyTableModel;
import org.pentaho.reporting.engine.classic.core.wizard.DataSchema;
import org.pentaho.reporting.engine.classic.core.wizard.DefaultDataSchema;
import org.pentaho.reporting.libraries.base.config.Configuration;

import javax.swing.table.TableModel;

public class ParameterExpressionRuntime implements ExpressionRuntime {
  private DefaultDataSchema dataSchema;
  private DataRow dataRow;
  private ProcessingContext processingContext;
  private TableModel model;
  private DataFactory dataFactory;

  public ParameterExpressionRuntime( final ParameterContext parameterContext, final DataRow dataRow )
    throws ReportProcessingException {
    if ( parameterContext == null ) {
      throw new NullPointerException();
    }
    if ( dataRow == null ) {
      throw new NullPointerException();
    }

    this.dataFactory = parameterContext.getDataFactory();
    this.model = new EmptyTableModel();
    this.dataSchema = new DefaultDataSchema();
    this.dataRow = dataRow;
    this.processingContext =
        new DefaultProcessingContext( new GenericOutputProcessorMetaData(),
            parameterContext.getResourceBundleFactory(), parameterContext.getConfiguration(), parameterContext
                .getResourceManager(), parameterContext.getContentBase(), parameterContext.getDocumentMetaData(),
            parameterContext.getReportEnvironment(), -1 );
  }

  public DataFactory getDataFactory() {
    return dataFactory;
  }

  /**
   * Returns the current data-row. The datarow can be used to access the computed values of all expressions and
   * functions and the current row in the tablemodel.
   *
   * @return the data-row.
   */
  public DataRow getDataRow() {
    return dataRow;
  }

  public DataSchema getDataSchema() {
    return dataSchema;
  }

  /**
   * Returns the report configuration that was used to initiate this processing run.
   *
   * @return the report configuration.
   */
  public Configuration getConfiguration() {
    return getProcessingContext().getConfiguration();
  }

  /**
   * Returns the resource-bundle factory of current processing context.
   *
   * @return the current resource-bundle factory.
   */
  public ResourceBundleFactory getResourceBundleFactory() {
    return getProcessingContext().getResourceBundleFactory();
  }

  /**
   * Grants access to the tablemodel was granted using report properties, now direct.
   *
   * @return the current tablemodel used in the report.
   */
  public TableModel getData() {
    return model;
  }

  /**
   * Returns the number of the row in the tablemodel that is currently being processed.
   *
   * @return the current row number.
   */
  public int getCurrentRow() {
    return -1;
  }

  public int getCurrentDataItem() {
    return -1;
  }

  public int getCurrentGroup() {
    return -1;
  }

  public int getGroupStartRow( final String groupName ) {
    return 0;
  }

  public int getGroupStartRow( final int groupIndex ) {
    return 0;
  }

  /**
   * Returns the current export descriptor as returned by the OutputProcessorMetaData object. The output descriptor is a
   * simple string collections consisting of the following components: exportclass/type/subtype
   * <p/>
   * For example, the PDF export would be: pageable/pdf and the StreamHTML export would return table/html/stream
   *
   * @return the export descriptor.
   */
  public String getExportDescriptor() {
    return getProcessingContext().getExportDescriptor();
  }

  /**
   * Returns the current processing context.
   *
   * @return the processing context.
   */
  public ProcessingContext getProcessingContext() {
    return processingContext;
  }

  public boolean isStructuralComplexReport() {
    return false;
  }

  public boolean isCrosstabActive() {
    return false;
  }
}