// Create a page for the selection tree view.
		 if (editor.getEditorInput() instanceof InMemoryChannelEditorInput) {
			 emfTreeViewer = new TreeViewer(tree);

			 DocumentRootImpl root = (DocumentRootImpl) ChannelFactory.eINSTANCE.createDocumentRoot();
			 root.setRInlineChannel(((InMemoryChannelEditorInput)editor.getEditorInput()).getChannel());

			 editor.getViewiInitializer().initialize(emfTreeViewer, root);
		 } else {
			 URI resourceURI = EditUIUtil.getURI(editor.getEditorInput());

			 LoadResourceResponse response = editor.getResourceLoader().getResource(editor.getEditingDomain(), resourceURI);

			 editor.handleProblems(response);

			 emfTreeViewer = editor.getTreeViewerFactory().createTreeViewer(tree, resourceURI);
			 editor.getViewiInitializer().initialize(emfTreeViewer, response.getResource());
			 enableCellEditing();
		 }

		 emfTreeViewer.setContentProvider(new AdapterFactoryContentProvider(editor.getAdapterFactory()));
		 ILabelDecorator decorator = PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator();
		 ChannelValidator channelValidator = ((ChannelEditor)editor).getChannelValidator();
		 ChannelTreeViewerDecorator labelDecorator = (ChannelTreeViewerDecorator) PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator(ChannelTreeViewerDecorator.ID);
		 labelDecorator.setChannelValidator(channelValidator);
		 emfTreeViewer.setLabelProvider(new DecoratingStyledCellLabelProvider(new ChannelAdapterFactoryLabelProvider(editor.getAdapterFactory(), tree.getFont(), ((ChannelEditor)editor).getDescriptorUtils()), labelDecorator, null));

		 editor.setSelectionOnRoot(emfTreeViewer);

		 new AdapterFactoryTreeEditor(emfTreeViewer.getTree(), editor.getAdapterFactory());

		 editor.createContextMenuFor(emfTreeViewer);

		 emfTreeViewer.addSelectionChangedListener(new ISelectionChangedListener() {
			 public void selectionChanged(SelectionChangedEvent event) {
				 Object selectedObject = ((StructuredSelection)event.getSelection()).getFirstElement();
				if (previousSelection != null && previousSelection.equals(selectedObject)) {
					 return;
				 }
				 previousSelection = selectedObject;
				 managedForm.fireSelectionChanged(spart, event.getSelection());
				 buttonsStateProvider(event.getSelection());
			 }

			 private void buttonsStateProvider(ISelection iSelection) {
				 EObject object = (EObject) ((StructuredSelection) iSelection).getFirstElement();
//				 if( object instanceof Inlet
//						 || object instanceof Route
//						 || object instanceof Outlet
//						 || object instanceof Transformer){
//
//					 List<String> extList = ChannelActivator.instance.getSupportedFileExtensions();
//					 if(extList.size() > 1){
//						 importComponentButton.setEnabled(true);
//					 }
//				 }

				 updateUpDownBtnEnablement(object);
				 btnRemove.setEnabled(true);
			 }
		 });

		 emfTreeViewer.addSelectionChangedListener(editor.createSelectionChangedListener());

		 emfTreeViewer.expandAll();

		 emfTreeViewer.addDoubleClickListener(new IDoubleClickListener() {

			 @Override
			 public void doubleClick(DoubleClickEvent event) {
				 Object selection = ((StructuredSelection)event.getSelection()).getFirstElement();
				 if(selection instanceof Reference && ((Reference)selection).getRefId() != null) {
					 try {
						 String guid = ((Reference)selection).getRefId();
						 DependencyType dependencybyGUID = IWResourceManager.getInstance().getDependencybyGUID(((FileEditorInput) editor.getEditorInput()).getFile(), guid);
						 if (dependencybyGUID != null) {
							 IResource resource = WorkspaceUtil.getResource(new Path(dependencybyGUID.getPath()));
							 if (resource != null && resource instanceof IFile) {
								 WorkspaceUtil.openFileInEditor((IFile) resource);
							 }
						 }
					 } catch (CoreException e) {
						 return;
					 }
				 }
			 }
		 });

		 // set selection on element that was last added to the model
		 editor.getEditingDomain().getCommandStack().addCommandStackListener(new CommandStackListener() {
			 @Override
			 public void commandStackChanged(EventObject event) {
				 Command mostRecentCommand = ((CommandStack) event.getSource()).getMostRecentCommand();

				 if (mostRecentCommand != null) {
					 if(mostRecentCommand instanceof CreateChildCommand){
						 CreateChildCommand command = (CreateChildCommand)mostRecentCommand;
						 Collection<?> result = command.getResult();
						 Object next = result.iterator().next();

						 TreeItem item = new TreeItem(tree.getTopItem(), SWT.NONE);
						 item.setData(next);
						 emfTreeViewer.setSelection(new StructuredSelection(next), true);
						 emfTreeViewer.refresh();
					 }

				 }
			 }
		 });

editor.getEditingDomain().getCommandStack().addCommandStackListener(new CommandStackListener() {