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package de.lmu.ifi.dbs.elki.gui.configurator;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import de.lmu.ifi.dbs.elki.gui.util.DynamicParameters;
import de.lmu.ifi.dbs.elki.logging.LoggingUtil;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.ListParameterization;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.TrackParameters;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.ClassParameter;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Parameter;
/**
* Provide a configuration panel to choose a class with the help of a dropdown.
* Additionally, the classes can in turn have additional parameters.
*
* @author Erich Schubert
*
* @apiviz.uses ClassParameter
*/
public class ClassParameterConfigurator extends AbstractSingleParameterConfigurator<ClassParameter<?>> implements ActionListener, ChangeListener {
final JComboBox value;
final ConfiguratorPanel child;
public ClassParameterConfigurator(ClassParameter<?> cp, JComponent parent) {
super(cp, parent);
// Input field
{
GridBagConstraints constraints = new GridBagConstraints();
constraints.fill = GridBagConstraints.HORIZONTAL;
constraints.weightx = 1.0;
value = new JComboBox();
value.setToolTipText(param.getShortDescription());
value.setPrototypeDisplayValue(cp.getRestrictionClass().getSimpleName());
parent.add(value, constraints);
finishGridRow();
}
if(!param.tookDefaultValue() && param.isDefined() && param.getGivenValue() != null) {
value.addItem(param.getValueAsString());
value.setSelectedIndex(0);
}
// For parameters with a default value, offer using the default
// For optional parameters, offer not specifying them.
if(cp.hasDefaultValue()) {
value.addItem(DynamicParameters.STRING_USE_DEFAULT + " " + cp.getDefaultValueAsString());
}
else if(cp.isOptional()) {
value.addItem(DynamicParameters.STRING_OPTIONAL);
}
// Offer the shorthand version of class names.
for(Class<?> impl : cp.getKnownImplementations()) {
value.addItem(ClassParameter.canonicalClassName(impl, cp.getRestrictionClass()));
}
// Child options
{
GridBagConstraints constraints = new GridBagConstraints();
constraints.gridwidth = GridBagConstraints.REMAINDER;
constraints.fill = GridBagConstraints.HORIZONTAL;
constraints.weightx = 1.0;
constraints.insets = new Insets(0, 10, 0, 0);
child = new ConfiguratorPanel();
child.addChangeListener(this);
parent.add(child, constraints);
}
value.addActionListener(this);
}
@Override
public void addParameter(Object owner, Parameter<?, ?> param, TrackParameters track) {
child.addParameter(owner, param, track);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == value) {
fireValueChanged();
}
else {
LoggingUtil.warning("actionPerformed triggered by unknown source: " + e.getSource());
}
}
@Override
public void stateChanged(ChangeEvent e) {
if(e.getSource() == child) {
fireValueChanged();
}
else {
LoggingUtil.warning("stateChanged triggered by unknown source: " + e.getSource());
}
}
@Override
public String getUserInput() {
String val = (String) value.getSelectedItem();
if(val.startsWith(DynamicParameters.STRING_USE_DEFAULT)) {
return null;
}
if(val == DynamicParameters.STRING_OPTIONAL) {
return null;
}
return val;
}
@Override
public void appendParameters(ListParameterization params) {
super.appendParameters(params);
child.appendParameters(params);
}
}
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