diff --git a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/view/CkanFramePanel.java b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/view/CkanFramePanel.java
index b955c4d..5c90ba0 100644
--- a/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/view/CkanFramePanel.java
+++ b/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/view/CkanFramePanel.java
@@ -19,17 +19,17 @@ import com.google.gwt.user.client.ui.Frame;
 import com.google.gwt.user.client.ui.Image;
 import com.google.gwt.user.client.ui.NamedFrame;
 
-
 /**
- * The Class CkanInternalFramePanel.
+ * The Class CkanFramePanel.
  *
- * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
- * Jun 9, 2016
+ * @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
+ * 
+ *         Feb 25, 2022
  */
-public class CkanFramePanel extends FlowPanel{
+public class CkanFramePanel extends FlowPanel {
 
 	private NamedFrame frame;
-	//private static final String FRAME_NAME = "ckan-content-frame";
+	// private static final String FRAME_NAME = "ckan-content-frame";
 	private HandlerManager eventBus;
 	private Image loading = new Image(CkanPortletResources.ICONS.loading());
 	private String messageToSend;
@@ -47,19 +47,17 @@ public class CkanFramePanel extends FlowPanel{
 	/**
 	 * Post message.
 	 *
-	 * @param msg the msg (as json)
-	 * @param javaScriptObject 
-	 * @param  
-	 * @param  
+	 * @param msg       the msg (as json)
+	 * @param frameName the frame name
 	 */
 	protected native void sendMessage(String msg, String frameName) /*-{
-		  console.log("Sending message " + msg);
-		  // $wnd.parent.postMessage(msg,'*');
-    	  //var f = $wnd.frames[frameName];
-    	  //console.log(f);
-		  //f.contentWindow.postMessage(msg, "*");
-		  $wnd.frames[frameName].postMessage(msg,"*")
-		  console.log("Message sent");
+		console.log("Sending message " + msg);
+		// $wnd.parent.postMessage(msg,'*');
+		//var f = $wnd.frames[frameName];
+		//console.log(f);
+		//f.contentWindow.postMessage(msg, "*");
+		$wnd.frames[frameName].postMessage(msg, "*")
+		console.log("Message sent");
 	}-*/;
 
 	/**
@@ -68,36 +66,38 @@ public class CkanFramePanel extends FlowPanel{
 	 * @param msg the msg
 	 */
 	private static native void print(String msg)/*-{
-	console.log(msg);
+		console.log(msg);
 	}-*/;
 
 	/**
 	 * Instance frame.
 	 *
 	 * @param ckanUrlConnector the ckan url connector
+	 * @param messageToSend    the message to send
+	 * @param ckanUrl          the ckan url
 	 * @return the frame
 	 */
-	public Frame instanceFrame(String ckanUrlConnector, final String messageToSend,final String ckanUrl) {
-		GWT.log("Instancing new IFRAME with uri: "+ckanUrlConnector);
-		try{
-			if(frame != null)
+	public Frame instanceFrame(String ckanUrlConnector, final String messageToSend, final String ckanUrl) {
+		GWT.log("Instancing new IFRAME with uri: " + ckanUrlConnector);
+		try {
+			if (frame != null)
 				remove(frame);
-		}catch(Exception e){
+		} catch (Exception e) {
 			print("Error " + e);
 		}
 
 		addLoading();
 		String urlEncoded = URL.encode(ckanUrlConnector);
 		GWT.log("Encoded url for instanciating frame is " + urlEncoded);
-		
+
 		frame = new NamedFrame(GCubeCkanDataCatalog.GCUBE_CKAN_IFRAME);
 		frame.setUrl(urlEncoded);
 
 		frame.getElement().setId(GCubeCkanDataCatalog.GCUBE_CKAN_IFRAME);
 		frame.setWidth("100%");
-		//		frame.setHeight("100%");
-		//		frame.getElement().getStyle().setOverflow(Overflow.HIDDEN);
-		//		frame.getElement().setAttribute("scrolling", "no");
+		// frame.setHeight("100%");
+		// frame.getElement().getStyle().setOverflow(Overflow.HIDDEN);
+		// frame.getElement().setAttribute("scrolling", "no");
 		frame.getElement().getStyle().setBorderWidth(0, Unit.PX);
 		frame.addLoadHandler(new LoadHandler() {
 
@@ -125,9 +125,9 @@ public class CkanFramePanel extends FlowPanel{
 	}
 
 	/**
-	 * add loading image
+	 * add loading image.
 	 */
-	private void addLoading(){
+	private void addLoading() {
 		this.add(loading);
 		loading.getElement().getStyle().setProperty("margin", "auto");
 		loading.getElement().getStyle().setDisplay(Display.BLOCK);