OO-3304: prevent opening twice the survey

src/main/java/org/olat/modules/quality/ui/ExecutionController.java

@@ -62,6 +62,10 @@ public class ExecutionController extends BasicController {
 		initVelocityContainer(ureq);
 		putInitialPanel(mainVC);
 	}
+	
+	public QualityExecutorParticipation getQualityParticipant() {
+		return qualityParticipation;
+	}
 
 	protected void initVelocityContainer(UserRequest ureq) {
 		back = LinkFactory.createLinkBack(mainVC, this);

src/main/java/org/olat/modules/quality/ui/ExecutorParticipationsListController.java

@@ -199,18 +199,19 @@ public class ExecutorParticipationsListController extends FormBasicController im
 			return;
 		}
 		
-		
-		OLATResourceable ores = OresHelper.createOLATResourceableInstance(ORES_EXECUTION_TYPE,
-				participation.getParticipationRef().getKey());
-		WindowControl bwControl = addToHistory(ureq, ores, null);
-		executionCtrl = new ExecutionController(ureq, bwControl, participation);
-		listenTo(executionCtrl);
-		
-		WindowControl wControl = getWindowControl();
-		ChiefController cc = wControl.getWindowBackOffice().getChiefController();
-		String businessPath = executionCtrl.getWindowControlForDebug().getBusinessControl().getAsString();
-		cc.getScreenMode().setMode(Mode.full, businessPath);
-		wControl.pushToMainArea(executionCtrl.getInitialComponent());
+		if(executionCtrl == null || !participation.equals(executionCtrl.getQualityParticipant())) {
+			OLATResourceable ores = OresHelper.createOLATResourceableInstance(ORES_EXECUTION_TYPE,
+					participation.getParticipationRef().getKey());
+			WindowControl bwControl = addToHistory(ureq, ores, null);
+			executionCtrl = new ExecutionController(ureq, bwControl, participation);
+			listenTo(executionCtrl);
+			
+			WindowControl wControl = getWindowControl();
+			ChiefController cc = wControl.getWindowBackOffice().getChiefController();
+			String businessPath = executionCtrl.getWindowControlForDebug().getBusinessControl().getAsString();
+			cc.getScreenMode().setMode(Mode.full, businessPath);
+			wControl.pushToMainArea(executionCtrl.getInitialComponent());
+		}
 	}
 
 	@Override