/*
* Used by Choice and occasionally NRCS mode
* (ChoiceHandler.java)
* (NRCSHandler.java)
*/
package usda.weru.weps.location.chooser;
import java.awt.Color;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import javax.measure.Quantity;
import javax.measure.quantity.Length;
import javax.measure.Unit;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
import usda.weru.gis.latlong.LatLong;
import usda.weru.gis.GISUtil;
import usda.weru.weps.location.Station;
/**
*
* @author Joseph Levin <joelevin@weru.ksu.edu>
*/
public class StationChoiceView extends JPanel implements StationViewInterface,
ListCellRenderer<Object>, ItemListener, PropertyChangeListener {
private static final long serialVersionUID = 1L;
private StationChooser c_chooser;
private final InternalComboBoxModel c_model;
private final NumberFormat c_format = new DecimalFormat("0.0");
/** Creates new form StationNearestView */
public StationChoiceView() {
initComponents();
combo.setRenderer(this);
c_model = new InternalComboBoxModel();
combo.setModel(c_model);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
renderer = new javax.swing.JPanel();
stationName = new javax.swing.JLabel();
stationDistance = new javax.swing.JLabel();
combo = new javax.swing.JComboBox<Station>();
stationName.setFont(stationName.getFont().deriveFont(stationName.getFont().getStyle() & ~java.awt.Font.BOLD));
stationName.setText("displayName");
stationName.setPreferredSize(null);
stationDistance.setFont(stationDistance.getFont().deriveFont(stationDistance.getFont().getStyle() & ~java.awt.Font.BOLD));
stationDistance.setText("100");
javax.swing.GroupLayout rendererLayout = new javax.swing.GroupLayout(renderer);
renderer.setLayout(rendererLayout);
rendererLayout.setHorizontalGroup(
rendererLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, rendererLayout.createSequentialGroup()
.addComponent(stationName, javax.swing.GroupLayout.DEFAULT_SIZE, 161, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(stationDistance)
.addContainerGap())
);
rendererLayout.setVerticalGroup(
rendererLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(stationDistance, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(stationName, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(combo, 0, 165, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(combo, javax.swing.GroupLayout.PREFERRED_SIZE, 20, javax.swing.GroupLayout.PREFERRED_SIZE)
);
}// </editor-fold>//GEN-END:initComponents
@Override
public Component install(StationChooser chooser) {
c_chooser = chooser;
enqueueUpdate();
updateDistance();
c_chooser.addPropertyChangeListener(this);
return this;
}
@Override
public void uninstall(StationChooser chooser) {
JLabel subLabel = c_chooser.getSubLabel();
if (subLabel != null) {
subLabel.setText("");
}
c_chooser.removePropertyChangeListener(this);
c_chooser = null;
}
@Override
public void propertyChange(PropertyChangeEvent evt) {
switch (evt.getPropertyName()) {
case StationChooser.PROP_DISTANCE_UNITS:
//only need to repaint because the cell renderer will calculate the distance on each paint
repaint();
updateDistance();
break;
case StationChooser.PROP_LATLONG:
//only need to repaint because the cell renderer will calculate the distance on each paint
repaint();
break;
case StationChooser.PROP_STATION_CHOICES:
//the choices changed, upate the model
enqueueUpdate();
break;
case StationChooser.PROP_SELECTED_STATION:
//the selected station changed'
setStation(c_chooser.getSelectedStation());
break;
case StationChooser.PROP_DISTANCE:
updateDistance();
break;
}
}
private void updateDistance() {
JLabel subLabel = c_chooser.getSubLabel();
if (subLabel != null) {
Quantity<Length> distance = c_chooser.getDistance();
Unit<Length> unit = c_chooser.getDistanceUnits();
if (distance != null && unit != null) {
Double distanceNum = distance.to(unit).getValue().doubleValue();
subLabel.setText("< " + c_format.format(distanceNum) + " " + unit.toString());
} else {
subLabel.setText("");
}
}
}
public void setStation(Station station) {
assert EventQueue.isDispatchThread();
setItemListenerActive(false);
if (station != null) {
combo.setSelectedItem(station);
} else {
combo.setSelectedIndex(-1);
}
setItemListenerActive(true);
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
combo.setEnabled(enabled);
}
private void setItemListenerActive(boolean active) {
if (active) {
combo.addItemListener(this);
} else {
combo.removeItemListener(this);
}
}
@Override
public void itemStateChanged(ItemEvent e) {
if (ItemEvent.SELECTED == e.getStateChange()) {
c_chooser.setSelectedStation((Station) combo.getSelectedItem());
}
}
private synchronized void enqueueUpdate() {
c_model.update();
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JComboBox<Station> combo;
private javax.swing.JPanel renderer;
private javax.swing.JLabel stationDistance;
private javax.swing.JLabel stationName;
// End of variables declaration//GEN-END:variables
@Override
@SuppressWarnings("rawtypes")
public Component getListCellRendererComponent(JList list, Object value, int index,
boolean isSelected, boolean cellHasFocus) {
if (value != null && value instanceof Station) {
Station station = (Station) value;
if (isSelected) {
renderer.setBackground(list.getSelectionBackground());
} else {
// list is coming up gray, so use the combo
renderer.setBackground(Color.WHITE);
}
stationName.setText(station.getDisplayName());
double distanceMeters = 0;
//TODO: can the chooser actually ever be null?
if (c_chooser != null && c_chooser.getLatLong() != null) {
//TODO: perhaps cache the distances? Is this a costly calculation?
LatLong latlong1 = c_chooser.getLatLong();
LatLong latlong2 = station.getLatLong();
Quantity<Length> distance = GISUtil.distanceBetweenCoordinates(latlong1, latlong2);
if (distance != null && c_chooser.getDistanceUnits() != null) {
distanceMeters = distance.to(c_chooser.getDistanceUnits()).getValue().doubleValue();
stationDistance.setText(c_format.format(distanceMeters));
} else {
stationDistance.setText("");
}
} else {
stationDistance.setText("");
}
} else {
stationName.setText("");
stationDistance.setText("");
}
if (index == -1) {
Unit units = c_chooser.getDistanceUnits();
stationDistance.setText(stationDistance.getText() + " " + (units != null ? units.toString() : ""));
}
return renderer;
}
private class InternalComboBoxModel extends DefaultComboBoxModel<Station> {
private static final long serialVersionUID = 1L;
public InternalComboBoxModel() {
}
public void update() {
setItemListenerActive(false);
try {
combo.setEnabled(false);
removeAllElements();
for (Station station : c_chooser.getStationChoices()) {
addElement(station);
}
// The station model always dictates what is selected.
setSelectedItem(c_chooser.getSelectedStation());
} finally {
combo.setEnabled(true);
setItemListenerActive(true);
}
}
}
}