/*
 * 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) 2006 - 2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.designtime.datafactory.editor.ui;

import javax.swing.JComponent;

import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
import org.fife.ui.rtextarea.RTextScrollPane;
import org.pentaho.reporting.engine.classic.core.designtime.datafactory.editor.model.Query;
import org.pentaho.reporting.engine.classic.core.designtime.datafactory.editor.model.QueryDialogModel;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.base.util.StringUtils;

public class DefaultQueryEditorPanel extends QueryEditorPanel<String> {
  private class QueryDocumentListener extends TextFieldBinding {
    protected void performUpdate() {
      QueryDialogModel<String> dialogModel = getDialogModel();
      final Query<String> selectedQuery = dialogModel.getSelectedQuery();
      if ( selectedQuery == null ) {
        return;
      }

      String text = queryTextArea.getText();
      if ( StringUtils.isEmpty( text ) ) {
        text = null;
      }
      if ( ObjectUtilities.equal( text, selectedQuery.getQueryScript() ) ) {
        return;
      }

      dialogModel.updateSelectedQuery( selectedQuery.updateQuery( text ) );
    }
  }

  private RSyntaxTextArea queryTextArea;

  public DefaultQueryEditorPanel( final QueryDialogModel<String> dialogModel ) {
    super( dialogModel );
  }

  public RSyntaxTextArea getQueryTextArea() {
    return queryTextArea;
  }

  public String getSyntaxEditingStyle() {
    return getQueryTextArea().getSyntaxEditingStyle();
  }

  public void setSyntaxEditingStyle( final String editingStyle ) {
    getQueryTextArea().setSyntaxEditingStyle( editingStyle );
  }

  protected void initialize() {
    queryTextArea = new RSyntaxTextArea();
    queryTextArea.setSyntaxEditingStyle( SyntaxConstants.SYNTAX_STYLE_SQL );
    queryTextArea.setEnabled( false );
    queryTextArea.getDocument().addDocumentListener( new QueryDocumentListener() );
  }

  protected void updateSelectedQueryFromModel() {
    QueryDialogModel<String> dialogModel = getDialogModel();
    Query<String> selectedQuery = dialogModel.getSelectedQuery();
    if ( selectedQuery == null ) {
      queryTextArea.setEnabled( false );
      queryTextArea.setText( null );
    } else {
      queryTextArea.setEnabled( true );
      queryTextArea.setText( selectedQuery.getQuery() );
    }
  }

  protected JComponent getQueryEditor() {
    return new RTextScrollPane( 500, 300, queryTextArea, true );
  }
}