I am making a Java GUI application. For reading two types of files required as an input, I am using the SwingWorkerclass which performs the operation in two different background threads. Once, the two types of files are read, there are a lot of components which get updated in the GUI with data and a HeatMap in one of the JPanel. This JPanel contains two JRadioButton, which on switching should display the two different heat maps obtained from the two files read by the application. I can see the heatmap of the first file when the user loads the file. But when I load the second file, heatmap for the second file in not represented (is empty) when the second radio button is active. Same happens, for the JTabbedPane which display the sub files from the two files. I use
imagePanel.removeAll();
imagePanel.add(preprocessedIntensityMap, BorderLayout.CENTER);
panel.repaint();
panel.revalidate();
while in the second background thread to update the JPanel, but this does nothing. I also tried getter and setter method for the JPanel but this did not change things. Any suggestions?
Here is the compete code of my second SwingWorker class:
public class PeaklistReadWorker extends SwingWorker<REXP, Object> {
private RConnection rc1;
private GUIMain guiClassObject;
private File fileName;
private JTree tree;
private String currentPath;
private REXP preprocessedSpectrumObjects;
private float minMzValue;
private float maxMzValue;
volatile HeatMap preprocessedIntensityMap;
private JLabel coordinates;
private JScrollPane spectralFilesScrollPane;
private final JPanel peakPickedFilesPanel;
private JTabbedPane tabbedSpectralFiles;
private final JLabel statusLabel;
private JMenuItem CGMenuItem;
private JMenuItem TGMenuItem;
private JPanel imagePanel;
private GenerateIntensityMap gim = new GenerateIntensityMap();
private SortFile sf = new SortFile();
private JDialog progressDialog;
public PeaklistReadWorker(GUIMain guiClassObject, File fileName, JTree tree, String currentPath, REXP
preprocessedSpectrumObjects, float minMzValue, float maxMzValue, HeatMap preprocessedIntensityMap, JLabel coordinates,
JScrollPane spectralFilesScrollPane, JPanel peakPickedFilesPanel, JTabbedPane tabbedSpectralFiles,
JLabel statusLabel, JMenuItem CGMenuItem, JMenuItem TGMenuItem, JPanel imagePanel, JDialog progressDialog)
{
this.guiClassObject = guiClassObject;
this.fileName = fileName;
this.tree = tree;
this.currentPath = currentPath;
this.preprocessedSpectrumObjects = preprocessedSpectrumObjects;
this.minMzValue = minMzValue;
this.maxMzValue = maxMzValue;
this.preprocessedIntensityMap = preprocessedIntensityMap;
this.coordinates = coordinates;
this.spectralFilesScrollPane = spectralFilesScrollPane;
this.peakPickedFilesPanel = peakPickedFilesPanel;
this.tabbedSpectralFiles = tabbedSpectralFiles;
this.statusLabel = statusLabel;
this.CGMenuItem = CGMenuItem;
this.TGMenuItem = TGMenuItem;
this.imagePanel = imagePanel;
this.progressDialog = progressDialog;
}
@Override
protected REXP doInBackground() throws Exception {
try {
rc1 = new RConnection();
rc1.assign("importPreprocessedSpectra", currentPath.concat("/importPreprocessedSpectra.R"));
rc1.eval("source(importPreprocessedSpectra)");
rc1.assign("inputFileDirectory", fileName.toString());
preprocessedSpectrumObjects = rc1.eval("importPreprocessedSpectra(inputFileDirectory)");
preprocessedIntensityMap = gim.generateIntensityMap(preprocessedSpectrumObjects, currentPath, minMzValue, maxMzValue, Gradient.GRADIENT_Rainbow, "PROCESSED");
} catch (RserveException e1) {
e1.printStackTrace();
} catch (REXPMismatchException e1) {
e1.printStackTrace();
}
return preprocessedSpectrumObjects;
}
/**
* Process method to take care of intermediate results - works in EDT
* @param chunks
*/
@Override
protected void process(List<Object> chunks) {
}
@Override
public void done() {
try {
REXP preprocessedSpectrumObjects = get();
guiClassObject.returnFromBackgroundPeaklistObjects(preprocessedSpectrumObjects);
// list only files with .txt extension from the directory selected
File[] filesInDirectory = fileName.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith(".txt");
}
});
guiClassObject.setPreprocessedIntensityMap(preprocessedIntensityMap);
// Calls sortByNumber method in class SortFile to list the files number wise
filesInDirectory = sf.sortByNumber(filesInDirectory);
tree = new JTree(guiClassObject.addNodes(null, filesInDirectory, fileName));
guiClassObject.setTree(tree);
DefaultMutableTreeNode firstLeaf = ((DefaultMutableTreeNode) tree.getModel().getRoot()).getFirstLeaf();
tree.setSelectionPath(new TreePath(firstLeaf.getPath()));
guiClassObject.updateSpectralTableandChartPICKED(firstLeaf);
// Add a tree selection listener
tree.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.getPath().getLastPathComponent();
guiClassObject.updateSpectralTableandChartPICKED(node);
}
});
imagePanel.removeAll();
imagePanel.add(preprocessedIntensityMap, BorderLayout.CENTER);
guiClassObject.panelRefresh(imagePanel);
coordinates.setBounds(31, 31, preprocessedIntensityMap.getWidth() - 31, preprocessedIntensityMap.getHeight() - 31);
preprocessedIntensityMap.addMouseListener(guiClassObject);
preprocessedIntensityMap.addMouseMotionListener(guiClassObject);
spectralFilesScrollPane.setViewportView(tree);
spectralFilesScrollPane.setPreferredSize(peakPickedFilesPanel.getSize());
peakPickedFilesPanel.add(spectralFilesScrollPane);
tabbedSpectralFiles.validate();
tabbedSpectralFiles.repaint();
CGMenuItem.setEnabled(true); // active now
TGMenuItem.setEnabled(true); // active now
progressDialog.dispose();//close the modal dialog
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}
}
Minimal Example
This minimal example does not even display the imagePanel at all, where the JLabel (HeatMap in the original code) should be displayed. But, the overall layout of this example is similar to my main script. The JLabel is generated in the SwingWorker class itself and then is added to the imagePanel.
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
public class GuiClass {
public static void main(String[] args) {
new GuiClass();
}
public GuiClass() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (UnsupportedLookAndFeelException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
final String raw = "Raw";
final String preprocessed = "Preprocessed";
final JRadioButton rawImage = new JRadioButton(raw, true);
JRadioButton peakPickedImage = new JRadioButton(preprocessed);
rawImage.setActionCommand(raw);
peakPickedImage.setActionCommand(preprocessed);
ButtonGroup radioButtonGroup = new ButtonGroup();
radioButtonGroup.add(rawImage);
radioButtonGroup.add(peakPickedImage);
JPanel buttons = new JPanel(new
FlowLayout(FlowLayout.CENTER, 5, 5));
buttons.add(rawImage);
buttons.add(peakPickedImage);
add(buttons, BorderLayout.SOUTH);
final CardLayout cl = new CardLayout();
final JPanel imagePanel = new JPanel(cl);
imagePanel.setSize(100,100);
add(imagePanel);
imagePanel.setVisible(true);
ActionListener al = new ActionListener() {
public void actionPerformed(ActionEvent ae) {
if (rawImage.isSelected() && rawImage.isEnabled()) {
ImageCreaterRaw icr = new ImageCreaterRaw(imagePanel, raw, cl);
icr.execute();
} else {
ImageCreaterPreprocessed icp = new ImageCreaterPreprocessed(imagePanel, preprocessed, cl);
icp.execute();
}
}
};
rawImage.addActionListener(al);
peakPickedImage.addActionListener(al);
}
}
}
class ImageCreaterRaw extends SwingWorker<Void, Void> {
private JPanel imagePanel;
// private HeatMap rawHeatMap;
private JLabel labelR;
private String raw;
private CardLayout cl;
public ImageCreaterRaw(JPanel imagePanel, String raw, CardLayout cl)
{
this.imagePanel = imagePanel;
this.raw = raw;
this.cl = cl;
}
@Override
protected Void doInBackground() throws Exception {
double[][] data = HeatMap.generateSinCosData(200);
boolean useGraphicsYAxis = true;
// System.out.println("I am herr");
// rawHeatMap = new HeatMap(data, useGraphicsYAxis, Gradient.GRADIENT_BlackToWhite);
labelR = new JLabel("Label for Raw");
try { Thread.currentThread().sleep(3000); }
catch(InterruptedException e) {}
return null;
}
public void done()
{
// imagePanel.add(rawHeatMap, raw);
imagePanel.add(labelR, raw);
cl.show(imagePanel, raw);
}
}
// First SwingWorker Class
class ImageCreaterPreprocessed extends SwingWorker<Void, Void> {
private JPanel imagePanel;
private JLabel labelP;
private String preprocessed;
private CardLayout cl;
public ImageCreaterPreprocessed(JPanel imagePanel, String preprocessed, CardLayout cl)
{
this.imagePanel = imagePanel;
this.preprocessed = preprocessed;
this.cl = cl;
}
@Override
protected Void doInBackground() throws Exception {
double[][] data = HeatMap.generateSinCosData(200);
// boolean useGraphicsYAxis = true;
// preprocessedHeatMap = new HeatMap(data, useGraphicsYAxis, Gradient.GRADIENT_BlueToRed);
labelP = new JLabel("Label for Preprocessed");
try { Thread.currentThread().sleep(3000); }
catch(InterruptedException e) {}
return null;
}
public void done()
{
//imagePanel.add(preprocessedHeatMap, preprocessed);
imagePanel.add(labelP, preprocessed);
cl.show(imagePanel, preprocessed);
}
}
