[569618] Filters are added even if add-on is not referenced in the model

Conflicts:
	plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/refresh/ExtensionRefreshExtension.java

Change-Id: I730726b6872d6c034089c4e47e315ffde92eede6
Signed-off-by: Tu Ton <minhtutonthat@gmail.com>

plugins/org.polarsys.capella.filtering.tools/src/org/polarsys/capella/filtering/tools/refresh/ExtensionRefreshExtension.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018 THALES GLOBAL SERVICES.
+ * Copyright (c) 2018, 2020 THALES GLOBAL SERVICES.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -18,14 +18,17 @@
 import org.eclipse.sirius.diagram.description.filter.FilterDescription;
 import org.eclipse.sirius.diagram.ui.business.api.helper.graphicalfilters.CompositeFilterApplicationBuilder;
 import org.polarsys.capella.filtering.tools.FilteringToolsPlugin;
+import org.polarsys.capella.filtering.tools.helpers.ViewpointHelper;
 
 public class ExtensionRefreshExtension implements IRefreshExtension {
 
   private final ResourceSetImpl localSet = new ResourceSetImpl();
 
   @Override
   public void beforeRefresh(DDiagram diagram) {
-    process(diagram);
+    if (ViewpointHelper.isViewpointActive(diagram)) {
+      process(diagram);
+    }
   }
 
   @Override