public void actionPerformed(ActionEvent e) {
// Handle open button action.
if (e.getSource() == openButton) {
int returnVal = fc.showOpenDialog(DirectorySize.this);
if (returnVal == JFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
// This is where a real application would open the file.
ListSubDirectorySizes(file);
} else {
log.append("Open command cancelled by user." + newline);
}
log.setCaretPosition(log.getDocument().getLength());
// Handle save button action.
} else if (e.getSource() == saveButton) {
log.setText(""); // reset
}
}
public void displayMessage(String message, boolean error) {
if (error) messageLbl.setForeground(Color.red);
else messageLbl.setForeground(UIManager.getColor("Label.foreground"));
messageLbl.setText(message);
}