/**
* Tells this console to watch the run state of the provided job, and prepares the console to
* receive the job's output (ie is activated & cleared). If this console is already running a job,
* it will be stopped.
*
* @param rpmJob The job to watch. If <code>null</code> or equal to the currently running job,
* this method will have no effect.
* @return This console's output stream where the linked job may send its output, or <code>null
* </code> if an invalid job is provided.
*/
public synchronized IOConsoleOutputStream linkJob(RPMExportOperation rpmJob) {
if (rpmJob == null || rpmJob.equals(currentJob)) {
return null;
}
if (currentJob != null) {
if (currentJob.getResult() == null) {
showErrorDialog();
return null;
}
currentJob.removeJobChangeListener(jobWatcher);
clearConsole();
}
activate();
currentJob = rpmJob;
currentJob.addJobChangeListener(jobWatcher);
running = currentJob.getState() == Job.RUNNING;
notifyConsoleObservers();
return newOutputStream();
}
/** Cancels the currently-running job. */
public synchronized void stop() {
if (currentJob != null && running) {
currentJob.cancel();
}
}