Puck detection dialog is maximized

src/main/java/ch/psi/mxsc/Controller.java

@@ -58,6 +58,8 @@ import javax.swing.table.DefaultTableModel;
 public class Controller {
 
     final boolean DIALOG_PUCK_LOAD_SHOW_BASEPLATE = true;
+    final int REMOVE_PUCK_TIMEOUT = 20000;
+    
     static Controller instance;
     final BasePlate basePlate;
     RoomTemperatureBasePlate roomTemperatureBasePlate;
@@ -923,9 +925,15 @@ public class Controller {
         playSound("mounted");        
         logPuckDetectionChange(puck, true);        
         onPuckScanned(null);
+        //If no new puck is scanned and detected mounted in the same place of the last unmount,
+        //considers the detection is flickering (up to a timeout)
         if ((datamatrix==null) || (datamatrix.isBlank())){
             if (puck == removedPuck){
-                datamatrix = insertedPuckDatamatrix;
+                if ((System.currentTimeMillis() - removeTimestamp) < REMOVE_PUCK_TIMEOUT){
+                    datamatrix = insertedPuckDatamatrix;
+                }
+            } else {
+               removedPuck = null;     
             }
         }        
                 
@@ -945,6 +953,7 @@ public class Controller {
         removedPuck = null;        
     }
     
+    long removeTimestamp;
     //Called when a puck is detected removed from the the dewar
     public void onPuckUnmounted(Puck puck) {      
         Logger.getLogger(Controller.class.getName()).info("Unmounted puck: " + puck.getName());
@@ -956,6 +965,7 @@ public class Controller {
             dialogPuckLoading.onPuckUnmounted(puck);
         } 
         removedPuck = puck;
+        removeTimestamp = System.currentTimeMillis();
     }                    
 
     public boolean hasLoadDialog(){