/**
* OrbisGIS is a java GIS application dedicated to research in GIScience.
* OrbisGIS is developed by the GIS group of the DECIDE team of the
* Lab-STICC CNRS laboratory, see <http://www.lab-sticc.fr/>.
*
* The GIS group of the DECIDE team is located at :
*
* Laboratoire Lab-STICC – CNRS UMR 6285
* Equipe DECIDE
* UNIVERSITÉ DE BRETAGNE-SUD
* Institut Universitaire de Technologie de Vannes
* 8, Rue Montaigne - BP 561 56017 Vannes Cedex
*
* OrbisGIS is distributed under GPL 3 license.
*
* Copyright (C) 2007-2014 CNRS (IRSTV FR CNRS 2488)
* Copyright (C) 2015-2017 CNRS (Lab-STICC UMR CNRS 6285)
*
* This file is part of OrbisGIS.
*
* OrbisGIS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* OrbisGIS 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* OrbisGIS. If not, see <http://www.gnu.org/licenses/>.
*
* For more information, please consult: <http://www.orbisgis.org/>
* or contact directly:
* info_at_ orbisgis.org
*/
package org.orbisgis.view.toc.actions.cui.legend.components;
import org.orbisgis.coremap.renderer.classification.ClassificationUtils;
import org.orbisgis.legend.IInterpolationLegend;
import org.orbisgis.legend.LookupFieldName;
import org.orbisgis.view.toc.actions.cui.components.CanvasSE;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sql.DataSource;
import java.sql.Connection;
import java.util.HashMap;
import java.util.Map;
/**
* Root class for proportional point/line field combo boxes.
*
* @author Adam Gouge
*/
public abstract class ProportionalFieldsComboBox extends NumericalFieldsComboBox {
private static final Logger LOGGER =
LoggerFactory.getLogger(ProportionalFieldsComboBox.class);
protected CanvasSE preview;
/**
* Constructor
*
* @param ds DataSource
* @param legend Legend
* @param preview Preview
*/
protected ProportionalFieldsComboBox(DataSource ds,
String table,
IInterpolationLegend legend,
CanvasSE preview) {
super(ds,table, legend);
this.preview = preview;
}
/**
* Gets the legend.
*
* @return The legend
*/
protected IInterpolationLegend getLegend() {
return (IInterpolationLegend) legend;
}
@Override
protected void updateField(String name) {
// Set the lookup field name.
((LookupFieldName) legend).setLookupFieldName(name);
try(Connection connection = dataSource.getConnection()) {
// Set the first and second data
double[] minAndMax = ClassificationUtils
.getMinAndMax( connection, tableIdentifier, name);
setFirstAndSecondValues(minAndMax);
// Set the sample data source for the preview.
Map<String, Object> sample = new HashMap<>();
sample.put(name, minAndMax[1]);
preview.setSampleDatasource(sample);
// Update the preview.
preview.setDisplayed(true);
preview.imageChanged();
} catch (Exception e) {
LOGGER.warn("Cannot get min and max values.");
}
}
/**
* Set the first and second values of the legend.
*
* @param minAndMax A two-item double array containing the min and max
* values, in this order.
*/
protected abstract void setFirstAndSecondValues(double[] minAndMax);
}