public void actionPerformed(ActionEvent e) {
if (e.getSource() == exitItem) {
kbc.stopLoop();
setVisible(false);
dispose();
} else if (e.getSource() == saveItem) {
saveImage();
} else if (e.getSource() == sleepItem1) {
setDelay(1);
} else if (e.getSource() == sleepItem2) {
setDelay(2);
} else if (e.getSource() == sleepItem5) {
setDelay(5);
} else if (e.getSource() == sleepItem10) {
setDelay(10);
} else if (e.getSource() instanceof JCheckBoxMenuItem) {
JCheckBoxMenuItem jmi = (JCheckBoxMenuItem) e.getSource();
String stat = jmi.getText();
if (jmi.isSelected()) {
kbc.addStatistic(stat);
} else {
kbc.removeStatistic(stat);
}
}
}
/**
* Saves the current chart as an image in png format. The user can select the filename, and is
* asked to confirm the overwrite of an existing file.
*/
public void saveImage() {
JFileChooser fc = new JFileChooser();
if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
File f = fc.getSelectedFile();
if (f.exists()) {
int ok =
JOptionPane.showConfirmDialog(
this,
KstatResources.getString("SAVEAS.OVERWRITE.TEXT") + " " + f.toString(),
KstatResources.getString("SAVEAS.CONFIRM.TEXT"),
JOptionPane.YES_NO_OPTION);
if (ok != JOptionPane.YES_OPTION) {
return;
}
}
BufferedImage bi = kbc.getChart().createBufferedImage(500, 300);
try {
ImageIO.write(bi, "png", f);
/*
* According to the API docs this should throw an IOException
* on error, but this doesn't seem to be the case. As a result
* it's necessary to catch exceptions more generally. Even this
* doesn't work properly, but at least we manage to convey the
* message to the user that the write failed, even if the
* error itself isn't handled.
*/
} catch (Exception ioe) {
JOptionPane.showMessageDialog(
this,
ioe.toString(),
KstatResources.getString("SAVEAS.ERROR.TEXT"),
JOptionPane.ERROR_MESSAGE);
}
}
}
/**
* Initialize the Frame.
*
* @param title the window title
* @param statsMenu an optional menu listing available statistics
*/
protected void init(String title, JMenu statsMenu) {
setTitle(title);
setContentPane(new ChartPanel(kbc.getChart()));
addWindowListener(new winExit());
JMenuBar jm = new JMenuBar();
jm.add(fileMenu());
if (!(jkstat instanceof SequencedJKstat)) {
jm.add(sleepMenu());
}
if (statsMenu != null) {
jm.add(statsMenu);
}
setJMenuBar(jm);
pack();
setVisible(true);
}
/**
* Set the update delay of the chart.
*
* @param delay the desired update delay, in seconds
*/
protected void setDelay(int delay) {
kbc.setDelay(delay);
}
