private void tableSelectionChanged() {
if (selectedDownload != null) selectedDownload.deleteObserver(DownloadGUI.this);
if (!clearing && table.getSelectedRow() > -1) {
selectedDownload = tableModel.getDownload(table.getSelectedRow());
selectedDownload.addObserver(DownloadGUI.this);
updateButtons();
}
}
private void updateButtons() {
if (selectedDownload != null) {
int status = selectedDownload.getStatus();
switch (status) {
case DownloadFile.DOWNLOADING:
pauseButton.setEnabled(true);
resumeButton.setEnabled(false);
cancelButton.setEnabled(true);
clearButton.setEnabled(false);
break;
case DownloadFile.PAUSED:
pauseButton.setEnabled(false);
resumeButton.setEnabled(true);
cancelButton.setEnabled(true);
clearButton.setEnabled(false);
break;
case DownloadFile.ERROR:
pauseButton.setEnabled(false);
resumeButton.setEnabled(true);
cancelButton.setEnabled(false);
clearButton.setEnabled(true);
break;
default:
pauseButton.setEnabled(false);
resumeButton.setEnabled(false);
cancelButton.setEnabled(false);
clearButton.setEnabled(true);
}
} else {
pauseButton.setEnabled(false);
resumeButton.setEnabled(false);
cancelButton.setEnabled(false);
clearButton.setEnabled(false);
}
}
public void update(Observable o, Object arg) {
if (selectedDownload != null && selectedDownload.equals(o)) updateButtons();
}
private void actionCancel() {
selectedDownload.cancel();
updateButtons();
}
private void actionResume() {
selectedDownload.resume();
updateButtons();
}
private void actionPause() {
selectedDownload.pause();
updateButtons();
}