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package tim.prune.function.compress;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import tim.prune.App;
import tim.prune.GenericFunction;
import tim.prune.I18nManager;
import tim.prune.UpdateMessageBroker;
import tim.prune.data.DataPoint;
import tim.prune.data.Track;
/**
* Class to provide the function for track compression
*/
public class CompressTrackFunction extends GenericFunction
{
private Track _track = null;
private JDialog _dialog = null;
private JButton _okButton = null;
private CompressionAlgorithm[] _algorithms = null;
private SummaryLabel _summaryLabel = null;
/**
* Constructor
* @param inApp app object
*/
public CompressTrackFunction(App inApp)
{
super(inApp);
_track = inApp.getTrackInfo().getTrack();
makeAlgorithms();
}
/** Get the name key */
public String getNameKey() {
return "function.compress";
}
/**
* Show the dialog to select compression parameters
*/
public void begin()
{
// Make dialog window
if (_dialog == null)
{
_dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
_dialog.setLocationRelativeTo(_parentFrame);
_dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
_dialog.getContentPane().add(makeDialogComponents());
_dialog.pack();
}
preview();
_dialog.setVisible(true);
}
/**
* Preview the compression by calling each algorithm in turn
* @return array of delete flags
*/
private boolean[] preview()
{
int numToDelete = 0;
boolean[] deleteFlags = new boolean[_track.getNumPoints()];
for (int i=0; i<_algorithms.length; i++)
{
numToDelete += _algorithms[i].preview(deleteFlags);
}
_summaryLabel.setValue(numToDelete);
_okButton.setEnabled(numToDelete > 0);
return deleteFlags;
}
/**
* Create dialog components
* @return Panel containing all gui elements in dialog
*/
private JPanel makeDialogComponents()
{
JPanel dialogPanel = new JPanel();
dialogPanel.setLayout(new BorderLayout());
// Make a central panel
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
// Add each of the algorithm components to the panel
for (int i=0; i<_algorithms.length; i++)
{
mainPanel.add(_algorithms[i].getGuiComponents());
mainPanel.add(Box.createRigidArea(new Dimension(0, 2)));
}
// Summary label below algorithms
JPanel summaryPanel = new JPanel();
_summaryLabel = new SummaryLabel(_track);
summaryPanel.add(_summaryLabel);
mainPanel.add(summaryPanel);
dialogPanel.add(mainPanel, BorderLayout.NORTH);
// button panel at bottom
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
_okButton = new JButton(I18nManager.getText("button.ok"));
_okButton.setEnabled(false);
ActionListener okListener = new ActionListener() {
public void actionPerformed(ActionEvent e)
{
finish();
}
};
_okButton.addActionListener(okListener);
buttonPanel.add(_okButton);
JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
_dialog.dispose();
}
});
buttonPanel.add(cancelButton);
dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
dialogPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
return dialogPanel;
}
/**
* Initialise all the algorithms to use
*/
private void makeAlgorithms()
{
// make listener to be informed of algorithm activation
ActionListener changeListener = new ActionListener() {
public void actionPerformed(ActionEvent arg0)
{
preview();
};
};
// construct track details to be used by all algorithms
TrackDetails details = new TrackDetails(_track);
// make array of algorithm objects
_algorithms = new CompressionAlgorithm[] {
new DuplicatePointAlgorithm(_track, details, changeListener),
new ClosePointsAlgorithm(_track, details, changeListener),
new WackyPointAlgorithm(_track, details, changeListener),
new SingletonAlgorithm(_track, details, changeListener)
};
}
/**
* Finish the dialog when OK pressed
*/
private void finish()
{
boolean[] deleteFlags = preview();
// All flags are now combined in deleteFlags array
for (int i=0; i<deleteFlags.length; i++)
{
DataPoint point = _track.getPoint(i);
point.setMarkedForDeletion(deleteFlags[i] && point.getPhoto() == null);
}
// Close dialog and inform listeners
UpdateMessageBroker.informSubscribers();
_dialog.dispose();
}
}
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