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package tim.prune.function;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;
import tim.prune.App;
import tim.prune.GenericFunction;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.SourceInfo;
import tim.prune.data.Track;
import tim.prune.load.TrackNameList;
/**
* Function to allow the selection of which tracks to load from the file / stream
*/
public class SelectTracksFunction extends GenericFunction
{
private Track _track = null;
private SourceInfo _sourceInfo = null;
private TrackNameList _trackNameList = null;
private JDialog _dialog = null;
private JList<String> _trackList = null;
/**
* Constructor
* @param inApp app object to use for load
* @param inTrack loaded track object
* @param inSourceInfo source information
* @param inTrackNameList track name list
*/
public SelectTracksFunction(App inApp, Track inTrack, SourceInfo inSourceInfo,
TrackNameList inTrackNameList)
{
super(inApp);
_track = inTrack;
_sourceInfo = inSourceInfo;
_trackNameList = inTrackNameList;
}
/**
* Start the function
*/
public void begin()
{
_dialog = new JDialog(_parentFrame, I18nManager.getText("function.open"));
_dialog.setLocationRelativeTo(_parentFrame);
_dialog.getContentPane().add(makeContents());
_dialog.pack();
_dialog.setVisible(true);
selectAll();
}
/**
* @return the contents of the window as a Component
*/
private Component makeContents()
{
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BorderLayout());
mainPanel.add(new JLabel(I18nManager.getText("dialog.selecttracks.intro")), BorderLayout.NORTH);
// track list
final int numTracks = _trackNameList.getNumTracks();
String[] names = new String[numTracks];
for (int i=0; i<numTracks; i++)
{
String name = _trackNameList.getTrackName(i);
if (name == null || name.equals("")) {
name = I18nManager.getText("dialog.selecttracks.noname");
}
names[i] = name + " (" + _trackNameList.getNumPointsInTrack(i) + ")";
}
_trackList = new JList<String>(names);
_trackList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
mainPanel.add(new JScrollPane(_trackList), BorderLayout.CENTER);
// select all button
JButton selectAllButton = new JButton(I18nManager.getText("button.selectall"));
selectAllButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
selectAll();
}
});
JPanel eastPanel = new JPanel();
eastPanel.add(selectAllButton);
mainPanel.add(eastPanel, BorderLayout.EAST);
// button panel at bottom
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
JButton okButton = new JButton(I18nManager.getText("button.ok"));
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
finish();
}
});
buttonPanel.add(okButton);
JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
_dialog.dispose();
_app.informNoDataLoaded();
}
});
buttonPanel.add(cancelButton);
mainPanel.add(buttonPanel, BorderLayout.SOUTH);
mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
return mainPanel;
}
/** @return name key */
public String getNameKey() {
return "dialog.selecttracks";
}
/**
* Select all the tracks in the list
*/
private void selectAll()
{
_trackList.setSelectionInterval(0, _trackNameList.getNumTracks()-1);
}
/**
* OK pressed, so finish the load
*/
private void finish()
{
_dialog.dispose();
int[] tracks = _trackList.getSelectedIndices();
// Check if all tracks are selected, then don't have to filter at all
if (tracks.length == _trackNameList.getNumTracks()) {
_app.informDataLoaded(_track, _sourceInfo);
}
else
{
// build array of which tracks have been selected
boolean[] selectedTracks = new boolean[_trackNameList.getNumTracks()];
for (int i=0; i<tracks.length; i++) {
selectedTracks[tracks[i]] = true;
}
// Loop over all points, counting points which survive filter and making flag array
int numPointsSelected = 0;
int currentTrack = -1;
final int totalPoints = _track.getNumPoints();
boolean[] selectedPoints = new boolean[totalPoints];
for (int i=0; i<totalPoints; i++)
{
final int startOfNextTrack = _trackNameList.getStartIndex(currentTrack+1);
if (i == startOfNextTrack) {currentTrack++;}
if (currentTrack < 0 || selectedTracks[currentTrack] || _track.getPoint(i).isWaypoint()) {
selectedPoints[i] = true;
numPointsSelected++;
}
}
// If none of the points have been selected, then load nothing
if (numPointsSelected <= 0) {
_app.informNoDataLoaded();
}
else
{
// Create new point array of required length
DataPoint[] croppedPoints = new DataPoint[numPointsSelected];
// Loop over all points again, copying surviving ones
int currPoint = 0;
for (int i=0; i<totalPoints; i++)
{
if (selectedPoints[i]) {
croppedPoints[currPoint] = _track.getPoint(i);
currPoint++;
}
}
// Construct Track and call informDataLoaded
Track filteredTrack = new Track(_track.getFieldList(), croppedPoints);
// Tell source info object which points were selected (pass selectedPoints array)
_sourceInfo.setPointIndices(selectedPoints);
_app.informDataLoaded(filteredTrack, _sourceInfo);
}
}
}
}
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