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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) 2011
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.Dimension;
import java.awt.GridBagConstraints;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.EventListenerList;
import de.lmu.ifi.dbs.elki.gui.icons.StockIcon;
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.Flag;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.Parameter;
/**
* Abstract class to produce a configurator for a particular parameter.
*
* @author Erich Schubert
*
* @apiviz.has StockIcon
*
* @param <T> parameter type
*/
public abstract class AbstractParameterConfigurator<T extends Parameter<?, ?>> implements ParameterConfigurator {
/**
* The parameter to configure
*/
final T param;
/**
* The parent container
*/
final JComponent parent;
/**
* The event listeners for this parameter.
*/
protected EventListenerList listenerList = new EventListenerList();
/**
* Constructor.
*
* @param param Parameter
* @param parent Parent
*/
public AbstractParameterConfigurator(T param, JComponent parent) {
super();
this.param = param;
this.parent = parent;
}
/**
* Complete the current grid row, adding the icon at the end
*/
protected void finishGridRow() {
GridBagConstraints constraints = new GridBagConstraints();
constraints.gridwidth = GridBagConstraints.REMAINDER;
constraints.weightx = 0;
final JLabel icon;
if(param.isOptional()) {
if(param.isDefined() && param.tookDefaultValue() && !(param instanceof Flag)) {
// TODO: better icon for default value?
icon = new JLabel(StockIcon.getStockIcon(StockIcon.DIALOG_INFORMATION));
icon.setToolTipText("Default value: "+param.getDefaultValueAsString());
}
else {
icon = new JLabel();
icon.setMinimumSize(new Dimension(16, 16));
}
}
else {
if(!param.isDefined()) {
icon = new JLabel(StockIcon.getStockIcon(StockIcon.DIALOG_ERROR));
icon.setToolTipText("Missing value.");
}
else {
icon = new JLabel();
icon.setMinimumSize(new Dimension(16, 16));
}
}
parent.add(icon, constraints);
}
@Override
public void addParameter(Object owner, Parameter<?, ?> param, TrackParameters track) {
LoggingUtil.warning(this.getClass() + " does not support sub-parameters!");
}
@Override
public void addChangeListener(ChangeListener listener) {
listenerList.add(ChangeListener.class, listener);
}
@Override
public void removeChangeListener(ChangeListener listener) {
listenerList.remove(ChangeListener.class, listener);
}
/**
* Notify listeners of a changed value.
*/
protected void fireValueChanged() {
// FIXME: compare with previous value?
ChangeEvent evt = new ChangeEvent(this);
for(ChangeListener listener : listenerList.getListeners(ChangeListener.class)) {
listener.stateChanged(evt);
}
}
@Override
public void appendParameters(ListParameterization params) {
Object val = getUserInput();
if(val instanceof String && ((String) val).length() == 0) {
val = null;
}
if(val != null) {
params.addParameter(param.getOptionID(), val);
}
}
/**
* Get the value given by the user.
*
* @return value for parameter
*/
public abstract Object getUserInput();
}
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