/*!
* 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.designtime.datafactory;
import javax.swing.JList;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class QuerySelectedHandler<T> implements ListSelectionListener, ListDataListener {
private NamedQueryModel<T> queries;
private JList queryNameList;
public QuerySelectedHandler( final NamedQueryModel<T> queries, final JList queryNameList ) {
if ( queryNameList == null ) {
throw new NullPointerException();
}
if ( queries == null ) {
throw new NullPointerException();
}
this.queries = queries;
this.queryNameList = queryNameList;
this.queryNameList.addListSelectionListener( this );
this.queries.getQueries().addListDataListener( this );
}
public void valueChanged( final ListSelectionEvent e ) {
final DataSetQuery<T> selectedValue = (DataSetQuery<T>) queryNameList.getSelectedValue();
queries.setSelectedDataSetQuery( selectedValue );
}
public void intervalAdded( final ListDataEvent e ) {
}
public void intervalRemoved( final ListDataEvent e ) {
}
public void contentsChanged( final ListDataEvent e ) {
final Object selectedValueInList = queryNameList.getSelectedValue();
final Object selectedItem = queries.getQueries().getSelectedItem();
if ( selectedItem == selectedValueInList ) {
return;
}
if ( selectedItem == null ) {
queryNameList.clearSelection();
} else {
queryNameList.setSelectedValue( selectedItem, true );
}
}
}