/** Register SVT histogram callback */
protected void setHistoCallback(boolean setCallback) {
TipcCb pHist = null;
String dest = AppConstants.HISTO_SUBJECT;
try {
if (setCallback) {
if (!srv.getSubjectSubscribe(dest)) {
ProcessHistMessage evRef = new ProcessHistMessage();
pHist = srv.addProcessCb(evRef, dest, srv);
if (pHist == null) {
Tut.exitFailure("WARNING. Couldn't register Histogram subject callback!\n");
}
srv.setSubjectSubscribe(dest, true);
warn("INFO. Subscribed to " + dest, Color.green);
addObserver(histoObserver);
}
} else {
if (srv.getSubjectSubscribe(dest)) {
srv.setSubjectSubscribe(dest, false);
warn("INFO. Unsubscribed from " + dest, Color.red);
deleteObserver(histoObserver);
}
}
} catch (TipcException Tipe) {
Tut.warning(Tipe);
}
}
/**
* Process SVT Histogram related messages when the callback is triggered
*
* @param msg Reference to the SmartSockets message
* @param obj User specified object that might be passed to the callback
*/
public void process(TipcMsg msg, Object arg) {
if (isDebugOn()) warn("Histogram messages published", Color.green);
try {
msg.setCurrent(0); // position the field ptr to the beginning of the message
int run = msg.nextInt4();
int time = msg.nextInt4();
int nhist = msg.nextMsgArray().length; // Find how many histograms are published
if (isDebugOn()) warn("# of histograms published: " + nhist, Color.blue);
if (nhist > 0) {
if (histoData == null) histoData = new SvtHistogramColl();
histoData.fillHistogramData(msg);
}
} catch (TipcException e) {
Tut.warning(e);
}
setChanged();
notifyObservers(histoData);
}