/*!
* 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.extensions.legacycharts;

import org.pentaho.reporting.designer.core.actions.AbstractElementSelectionAction;
import org.pentaho.reporting.designer.core.model.selection.DocumentContextSelectionModel;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.Section;
import org.pentaho.reporting.engine.classic.core.designtime.ReportModelEventFilter;
import org.pentaho.reporting.engine.classic.core.designtime.ReportModelEventFilterFactory;
import org.pentaho.reporting.engine.classic.core.event.ReportModelEvent;
import org.pentaho.reporting.engine.classic.extensions.legacy.charts.LegacyChartType;

import javax.swing.*;
import java.awt.event.ActionEvent;

public class EditLegacyChartAction extends AbstractElementSelectionAction {
  private ReportModelEventFilter eventFilter;

  public EditLegacyChartAction() {
    putValue( Action.NAME, Messages.getInstance().getString( "EditLegacyChartAction.Text" ) );
    putValue( Action.SHORT_DESCRIPTION, Messages.getInstance().getString( "EditLegacyChartAction.Description" ) );
    putValue( Action.MNEMONIC_KEY, Messages.getInstance().getOptionalMnemonic( "EditLegacyChartAction.Mnemonic" ) );
    putValue( Action.ACCELERATOR_KEY,
      Messages.getInstance().getOptionalKeyStroke( "EditLegacyChartAction.Accelerator" ) );

    eventFilter = new ReportModelEventFilterFactory().createAttributeFilter
      ( AttributeNames.Core.NAMESPACE, AttributeNames.Core.ELEMENT_TYPE );
  }

  protected void selectedElementPropertiesChanged( final ReportModelEvent event ) {
    if ( eventFilter.isFilteredEvent( event ) ) {
      updateSelection();
    }
  }

  protected void updateSelection() {
    if ( isSingleElementSelection() == false ) {
      setEnabled( false );
      return;
    }

    final Object selectedElement = getSelectionModel().getSelectedElement( 0 );
    if ( selectedElement instanceof Section ) {
      setEnabled( false );
      return;
    }
    if ( selectedElement instanceof Element ) {
      final Element element = (Element) selectedElement;
      setEnabled( element.getElementType() instanceof LegacyChartType );
    } else {
      setEnabled( false );
    }
  }

  public void actionPerformed( final ActionEvent e ) {
    final DocumentContextSelectionModel selectionModel = getSelectionModel();
    if ( selectionModel == null ) {
      return;
    }

    if ( selectionModel.getSelectionCount() != 1 ) {
      return;
    }
    final Object selectedElement = selectionModel.getSelectedElement( 0 );
    if ( selectedElement instanceof Element == false || selectedElement instanceof Section ) {
      return;
    }
    final Element chartElement = (Element) selectedElement;
    if ( LegacyChartsUtil.isLegacyChartElement( chartElement ) == false ) {
      return;
    }

    LegacyChartsUtil.performEdit( chartElement, getReportDesignerContext() );
  }

}