Added SessionExpiredShow

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/portlets/user/tabular-data-table-widget@95793 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portlets/user/td/tablewidget/client/ChangeTableTypePanel.java

@@ -1,8 +1,7 @@
 package org.gcube.portlets.user.td.tablewidget.client;
 
-
-
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.TableData;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.table.ChangeTableTypeSession;
 import org.gcube.portlets.user.td.tablewidget.client.progress.ChangeTableTypeProgressDialog;
@@ -10,6 +9,8 @@ import org.gcube.portlets.user.td.tablewidget.client.type.TableTypeElement;
 import org.gcube.portlets.user.td.tablewidget.client.type.TableTypeProperties;
 import org.gcube.portlets.user.td.tablewidget.client.type.TableTypeStore;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -29,11 +30,10 @@ import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 import com.sencha.gxt.widget.core.client.form.ComboBox;
 import com.sencha.gxt.widget.core.client.form.FieldLabel;
 
-
 /**
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
 public class ChangeTableTypePanel extends FramedPanel {
@@ -51,8 +51,6 @@ public class ChangeTableTypePanel  extends FramedPanel {
 	protected ComboBox<TableTypeElement> comboTableType;
 	protected TextButton change;
 
-	
-	
 	public ChangeTableTypePanel(TRId trId, EventBus eventBus) {
 		super();
 		this.trId = trId;
@@ -67,9 +65,9 @@ public class ChangeTableTypePanel  extends FramedPanel {
 		setHeaderVisible(false);
 		setBodyBorder(false);
 
-		
 		TableTypeProperties props = GWT.create(TableTypeProperties.class);
-		ListStore<TableTypeElement> storeTableType = new ListStore<TableTypeElement>(props.id());
+		ListStore<TableTypeElement> storeTableType = new ListStore<TableTypeElement>(
+				props.id());
 
 		storeTableType.addAll(TableTypeStore.getTableTypes());
 
@@ -80,14 +78,12 @@ public class ChangeTableTypePanel  extends FramedPanel {
 
 		Log.trace("ComboTableType created");
 
-		
 		comboTableType.setEmptyText("Select a Table Type...");
 		comboTableType.setItemId("ComboTableType");
 		comboTableType.setWidth("200px");
 		comboTableType.setEditable(false);
 		comboTableType.setTriggerAction(TriggerAction.ALL);
 
-		 
 		change = new TextButton("Change");
 		change.addSelectHandler(new SelectHandler() {
 
@@ -101,10 +97,10 @@ public class ChangeTableTypePanel  extends FramedPanel {
 		vl.setScrollMode(ScrollMode.AUTO);
 		vl.setAdjustForScroll(true);
 
-		
-		vl.add(new FieldLabel(comboTableType, "Table Type"), new VerticalLayoutData(1,
-				-1));
-		vl.add(change, new VerticalLayoutData(-1, -1, new Margins(10, 0, 10, 0)));
+		vl.add(new FieldLabel(comboTableType, "Table Type"),
+				new VerticalLayoutData(1, -1));
+		vl.add(change,
+				new VerticalLayoutData(-1, -1, new Margins(10, 0, 10, 0)));
 
 		add(vl);
 		show();
@@ -115,7 +111,8 @@ public class ChangeTableTypePanel  extends FramedPanel {
 	protected void onChangeTableType() {
 		TableTypeElement tableTypeElement = comboTableType.getCurrentValue();
 		if (tableTypeElement != null) {
-			changeTableTypeSession=new ChangeTableTypeSession(trId,tableTypeElement.getTableType());
+			changeTableTypeSession = new ChangeTableTypeSession(trId,
+					tableTypeElement.getTableType());
 			callChangeTableType();
 		} else {
 			UtilsGXT3.alert("Attention", "Select a table type!");
@@ -123,41 +120,52 @@ public class ChangeTableTypePanel  extends FramedPanel {
 	}
 
 	private void callChangeTableType() {
-		TDGWTServiceAsync.INSTANCE.startChangeTableType(
-				changeTableTypeSession, new AsyncCallback<Void>() {
+		TDGWTServiceAsync.INSTANCE.startChangeTableType(changeTableTypeSession,
+				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.debug("Change The Table Type Error: "
 									+ caught.getLocalizedMessage());
-						UtilsGXT3.alert("Error Changing The Table Type",
+							UtilsGXT3
+									.alert("Error Changing The Table Type",
 											"Error in invocation of Change Table Type operation!");
-
+						}
 					}
 
 					public void onSuccess(Void result) {
-						changeTableTypeProgressDialog= new ChangeTableTypeProgressDialog(changeTableTypeSession, eventBus);
+						changeTableTypeProgressDialog = new ChangeTableTypeProgressDialog(
+								changeTableTypeSession, eventBus);
 					}
 
 				});
 
 	}
 
-	
 	protected void setCurrentType() {
-		TableTypeElement tElement=TableTypeStore.getTableTypeElement(table.getTypeName());
+		TableTypeElement tElement = TableTypeStore.getTableTypeElement(table
+				.getTypeName());
 		comboTableType.setValue(tElement);
 
 	}
 
-	
 	private void load() {
 		TDGWTServiceAsync.INSTANCE.getTable(trId,
 				new AsyncCallback<TableData>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Error retrieving table: "
 									+ caught.getMessage());
-						UtilsGXT3.alert("Error retrieving table",caught.getMessage());
+							UtilsGXT3.alert("Error retrieving table",
+									caught.getMessage());
+						}
 					}
 
 					public void onSuccess(TableData result) {
@@ -171,13 +179,9 @@ public class ChangeTableTypePanel  extends FramedPanel {
 
 	}
 
-	
-	
 	public void update(TRId trId) {
 		this.trId = trId;
 		load();
 	}
 
-	
 }
-	

src/main/java/org/gcube/portlets/user/td/tablewidget/client/CloneTabularResource.java

@@ -1,11 +1,14 @@
 package org.gcube.portlets.user.td.tablewidget.client;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.clone.CloneTabularResourceSession;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -34,24 +37,29 @@ public class CloneTabularResource {
 				cloneTabularResourceSession, new AsyncCallback<TRId>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.debug("Clone Error: "
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert("Error Cloning Tabular Resource",
 									"Error in clone operation!");
-
+						}
 					}
 
 					public void onSuccess(TRId result) {
 						Log.info("TR Clone:" + result);
-						final ChangeTableRequestEvent event=new ChangeTableRequestEvent(ChangeTableRequestType.CLONETABULARRESOURCE,result,ChangeTableWhy.TABLEUPDATED);
+						final ChangeTableRequestEvent event = new ChangeTableRequestEvent(
+								ChangeTableRequestType.CLONETABULARRESOURCE,
+								result, ChangeTableWhy.TABLEUPDATED);
 						eventBus.fireEvent(event);
-						UtilsGXT3.info("Clone", "Clone Tabular Resource Succed");
+						UtilsGXT3
+								.info("Clone", "Clone Tabular Resource Succed");
 					}
 
 				});
 
 	}
 
-	
-
 }

src/main/java/org/gcube/portlets/user/td/tablewidget/client/history/HistoryDiscard.java

@@ -1,9 +1,12 @@
 package org.gcube.portlets.user.td.tablewidget.client.history;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.history.RollBackSession;
 import org.gcube.portlets.user.td.tablewidget.client.progress.RollBackProgressDialog;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -26,11 +29,15 @@ public class HistoryDiscard {
 		TDGWTServiceAsync.INSTANCE.getCurrentTRId(new AsyncCallback<TRId>() {
 
 			public void onFailure(Throwable caught) {
+				if (caught instanceof TDGWTSessionExpiredException) {
+					eventBus.fireEvent(new SessionExpiredEvent(
+							SessionExpiredType.EXPIREDONSERVER));
+				} else {
 					Log.error("Error retrieving trId: "
 							+ caught.getLocalizedMessage());
 					UtilsGXT3.alert("Error",
 							"Error retrieving current tabular resource id");
-
+				}
 			}
 
 			public void onSuccess(TRId result) {
@@ -47,10 +54,15 @@ public class HistoryDiscard {
 				new AsyncCallback<RollBackSession>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Error in discard: "
 									+ caught.getLocalizedMessage());
-						UtilsGXT3.alert("Error in discard", "Error in discard");
-
+							UtilsGXT3.alert("Error in discard",
+									"Error in discard");
+						}
 					}
 
 					public void onSuccess(RollBackSession result) {

src/main/java/org/gcube/portlets/user/td/tablewidget/client/history/HistoryPanel.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.history.OpHistory;
 import org.gcube.portlets.user.td.gwtservice.shared.history.RollBackSession;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.TableData;
@@ -12,6 +13,8 @@ import org.gcube.portlets.user.td.tablewidget.client.progress.RollBackProgressDi
 import org.gcube.portlets.user.td.tablewidget.client.properties.OpHistoryProperties;
 import org.gcube.portlets.user.td.tablewidget.client.resources.ResourceBundle;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -120,8 +123,8 @@ public class HistoryPanel extends FramedPanel {
 
 			@Override
 			public void render(Context context, String value, SafeHtmlBuilder sb) {
-				sb.appendHtmlConstant("<span title='"+value+"'>"
-						+ value + "</span>");
+				sb.appendHtmlConstant("<span title='" + value + "'>" + value
+						+ "</span>");
 
 			}
 
@@ -133,8 +136,6 @@ public class HistoryPanel extends FramedPanel {
 		ColumnConfig<OpHistory, String> rollBackColumn = new ColumnConfig<OpHistory, String>(
 				props.date(), 40, "Undo");
 
-		
-
 		ActionButtonCellNoFirst button = new ActionButtonCellNoFirst();
 		button.setIcon(ResourceBundle.INSTANCE.undo());
 		button.setTitle("Undo");
@@ -151,8 +152,6 @@ public class HistoryPanel extends FramedPanel {
 
 		rollBackColumn.setCell(button);
 
-		
-		
 		List<ColumnConfig<OpHistory, ?>> l = new ArrayList<ColumnConfig<OpHistory, ?>>();
 		l.add(expander);
 		l.add(nameCol);
@@ -233,11 +232,15 @@ public class HistoryPanel extends FramedPanel {
 				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Error in rollback: "
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert("Error in rollback",
 									"Error in rollback");
-
+						}
 					}
 
 					public void onSuccess(Void result) {
@@ -262,10 +265,15 @@ public class HistoryPanel extends FramedPanel {
 				new AsyncCallback<ArrayList<OpHistory>>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Error Retrieving History: "
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert("Error retrieving history",
 									"Error retrieving history");
+						}
 						callback.onFailure(caught);
 					}
 
@@ -288,11 +296,15 @@ public class HistoryPanel extends FramedPanel {
 		TDGWTServiceAsync.INSTANCE.getCurrentTRId(new AsyncCallback<TRId>() {
 
 			public void onFailure(Throwable caught) {
+				if (caught instanceof TDGWTSessionExpiredException) {
+					eventBus.fireEvent(new SessionExpiredEvent(
+							SessionExpiredType.EXPIREDONSERVER));
+				} else {
 					Log.error("Error retrieving current TRId: "
 							+ caught.getLocalizedMessage());
 					UtilsGXT3.alert("Error",
 							"Error retrieving current tabular resource id");
-
+				}
 			}
 
 			public void onSuccess(TRId result) {

src/main/java/org/gcube/portlets/user/td/tablewidget/client/progress/ChangeTableTypeProgressDialog.java

@@ -1,10 +1,13 @@
 package org.gcube.portlets.user.td.tablewidget.client.progress;
 
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.table.ChangeTableTypeSession;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -19,16 +22,16 @@ import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.Verti
 import com.sencha.gxt.widget.core.client.event.SelectEvent;
 import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
-
-
 /**
- * LabelColumnProgressDialog is a Dialog that show progress of change the column label 
+ * LabelColumnProgressDialog is a Dialog that show progress of change the column
+ * label
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
-public class ChangeTableTypeProgressDialog extends Window implements ChangeTableTypeProgressListener {
+public class ChangeTableTypeProgressDialog extends Window implements
+		ChangeTableTypeProgressListener {
 	public static final int STATUS_POLLING_DELAY = 1000;
 	protected String WIDTH = "400px";
 	protected String HEIGHT = "120px";
@@ -39,7 +42,8 @@ public class ChangeTableTypeProgressDialog extends Window implements ChangeTable
 	protected TRId trId;
 	private ChangeTableWhy why;
 
-		public ChangeTableTypeProgressDialog(ChangeTableTypeSession changeTableTypeSession, EventBus eventBus) {
+	public ChangeTableTypeProgressDialog(
+			ChangeTableTypeSession changeTableTypeSession, EventBus eventBus) {
 		this.changeTableTypeSession = changeTableTypeSession;
 		this.eventBus = eventBus;
 		setWidth(WIDTH);
@@ -57,7 +61,6 @@ public class ChangeTableTypeProgressDialog extends Window implements ChangeTable
 
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 
-			
 		ProgressBar progressBar = new ProgressBar();
 
 		ok = new TextButton("OK");
@@ -69,16 +72,16 @@ public class ChangeTableTypeProgressDialog extends Window implements ChangeTable
 			}
 		});
 
-			v.add(progressBar, new VerticalLayoutData(1,
-					1, new Margins(5, 5, 5, 5)));
+		v.add(progressBar,
+				new VerticalLayoutData(1, 1, new Margins(5, 5, 5, 5)));
 
 		panel.add(v);
 		panel.addButton(ok);
 		add(panel);
 
-			
 		progressUpdater = new ChangeTableTypeProgressUpdater();
-			progressUpdater.addListener(new ChangeTableTypeProgressBarUpdater(progressBar));
+		progressUpdater.addListener(new ChangeTableTypeProgressBarUpdater(
+				progressBar));
 
 		progressUpdater.addListener(this);
 		progressUpdater.scheduleRepeating(STATUS_POLLING_DELAY);
@@ -106,16 +109,20 @@ public class ChangeTableTypeProgressDialog extends Window implements ChangeTable
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
+		if (caught instanceof TDGWTSessionExpiredException) {
+			eventBus.fireEvent(new SessionExpiredEvent(
+					SessionExpiredType.EXPIREDONSERVER));
+		} else {
 			ok.setVisible(true);
 			this.trId = null;
 			UtilsGXT3.alert("Error Changing The Table Type", reason);
-			
+		}
 	}
 
 	public void updateInvocation() {
 		if (trId != null) {
-				ChangeTableRequestEvent changeTableRequestEvent=
-						new ChangeTableRequestEvent(ChangeTableRequestType.CHANGETABLETYPE, trId,why);
+			ChangeTableRequestEvent changeTableRequestEvent = new ChangeTableRequestEvent(
+					ChangeTableRequestType.CHANGETABLETYPE, trId, why);
 			eventBus.fireEvent(changeTableRequestEvent);
 		}
 		hide();
@@ -123,7 +130,8 @@ public class ChangeTableTypeProgressDialog extends Window implements ChangeTable
 
 	@Override
 	public void operationStopped(TRId trId, String reason, String details) {
-			Log.debug("Operation Stopped: ["+trId.toString()+", "+reason+", "+details+"]");
+		Log.debug("Operation Stopped: [" + trId.toString() + ", " + reason
+				+ ", " + details + "]");
 		ok.setVisible(true);
 		this.trId = trId;
 		why = ChangeTableWhy.TABLECURATION;

src/main/java/org/gcube/portlets/user/td/tablewidget/client/progress/DeleteRowsProgressDialog.java

@@ -1,10 +1,13 @@
 package org.gcube.portlets.user.td.tablewidget.client.progress;
 
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.rows.DeleteRowsSession;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -19,16 +22,16 @@ import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.Verti
 import com.sencha.gxt.widget.core.client.event.SelectEvent;
 import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
-
-
 /**
- * LabelColumnProgressDialog is a Dialog that show progress of change the column label 
+ * LabelColumnProgressDialog is a Dialog that show progress of change the column
+ * label
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
-public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgressListener {
+public class DeleteRowsProgressDialog extends Window implements
+		DeleteRowsProgressListener {
 	public static final int STATUS_POLLING_DELAY = 1000;
 	protected String WIDTH = "400px";
 	protected String HEIGHT = "120px";
@@ -39,7 +42,8 @@ public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgre
 	protected TRId trId;
 	private ChangeTableWhy why;
 
-		public DeleteRowsProgressDialog(DeleteRowsSession deleteRowsSession, EventBus eventBus) {
+	public DeleteRowsProgressDialog(DeleteRowsSession deleteRowsSession,
+			EventBus eventBus) {
 		this.deleteRowsSession = deleteRowsSession;
 		this.eventBus = eventBus;
 		setWidth(WIDTH);
@@ -57,7 +61,6 @@ public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgre
 
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 
-			
 		ProgressBar progressBar = new ProgressBar();
 
 		ok = new TextButton("OK");
@@ -69,16 +72,16 @@ public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgre
 			}
 		});
 
-			v.add(progressBar, new VerticalLayoutData(1,
-					1, new Margins(5, 5, 5, 5)));
+		v.add(progressBar,
+				new VerticalLayoutData(1, 1, new Margins(5, 5, 5, 5)));
 
 		panel.add(v);
 		panel.addButton(ok);
 		add(panel);
 
-			
 		progressUpdater = new DeleteRowsProgressUpdater();
-			progressUpdater.addListener(new DeleteRowsProgressBarUpdater(progressBar));
+		progressUpdater.addListener(new DeleteRowsProgressBarUpdater(
+				progressBar));
 
 		progressUpdater.addListener(this);
 		progressUpdater.scheduleRepeating(STATUS_POLLING_DELAY);
@@ -107,16 +110,20 @@ public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgre
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
+		if (caught instanceof TDGWTSessionExpiredException) {
+			eventBus.fireEvent(new SessionExpiredEvent(
+					SessionExpiredType.EXPIREDONSERVER));
+		} else {
 			ok.setVisible(true);
 			this.trId = null;
 			UtilsGXT3.alert("Error Deleting Rows", reason);
-			
+		}
 	}
 
 	public void updateInvocation() {
 		if (trId != null) {
-				ChangeTableRequestEvent changeTableRequestEvent=
-						new ChangeTableRequestEvent(ChangeTableRequestType.DELETEROWS, trId, why);
+			ChangeTableRequestEvent changeTableRequestEvent = new ChangeTableRequestEvent(
+					ChangeTableRequestType.DELETEROWS, trId, why);
 			eventBus.fireEvent(changeTableRequestEvent);
 		}
 		hide();
@@ -124,7 +131,8 @@ public class DeleteRowsProgressDialog extends Window implements DeleteRowsProgre
 
 	@Override
 	public void operationStopped(TRId trId, String reason, String details) {
-			Log.debug("Operation Stopped: ["+trId.toString()+", "+reason+", "+details+"]");
+		Log.debug("Operation Stopped: [" + trId.toString() + ", " + reason
+				+ ", " + details + "]");
 		ok.setVisible(true);
 		this.trId = trId;
 		why = ChangeTableWhy.TABLECURATION;

src/main/java/org/gcube/portlets/user/td/tablewidget/client/progress/DuplicatesRowsProgressDialog.java

@@ -1,10 +1,13 @@
 package org.gcube.portlets.user.td.tablewidget.client.progress;
 
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.rows.DuplicatesSession;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -19,16 +22,16 @@ import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.Verti
 import com.sencha.gxt.widget.core.client.event.SelectEvent;
 import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 
-
-
 /**
- * LabelColumnProgressDialog is a Dialog that show progress of change the column label 
+ * LabelColumnProgressDialog is a Dialog that show progress of change the column
+ * label
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
-public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRowsProgressListener {
+public class DuplicatesRowsProgressDialog extends Window implements
+		DuplicatesRowsProgressListener {
 	public static final int STATUS_POLLING_DELAY = 1000;
 	protected String WIDTH = "400px";
 	protected String HEIGHT = "120px";
@@ -39,7 +42,8 @@ public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRo
 	protected TRId trId;
 	private ChangeTableWhy why;
 
-		public DuplicatesRowsProgressDialog(DuplicatesSession duplicatesSession, EventBus eventBus) {
+	public DuplicatesRowsProgressDialog(DuplicatesSession duplicatesSession,
+			EventBus eventBus) {
 		this.duplicatesSession = duplicatesSession;
 		this.eventBus = eventBus;
 		setWidth(WIDTH);
@@ -57,7 +61,6 @@ public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRo
 
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 
-			
 		ProgressBar progressBar = new ProgressBar();
 
 		ok = new TextButton("OK");
@@ -69,16 +72,16 @@ public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRo
 			}
 		});
 
-			v.add(progressBar, new VerticalLayoutData(1,
-					1, new Margins(5, 5, 5, 5)));
+		v.add(progressBar,
+				new VerticalLayoutData(1, 1, new Margins(5, 5, 5, 5)));
 
 		panel.add(v);
 		panel.addButton(ok);
 		add(panel);
 
-			
 		progressUpdater = new DuplicatesRowsProgressUpdater();
-			progressUpdater.addListener(new DuplicatesRowsProgressBarUpdater(progressBar));
+		progressUpdater.addListener(new DuplicatesRowsProgressBarUpdater(
+				progressBar));
 
 		progressUpdater.addListener(this);
 		progressUpdater.scheduleRepeating(STATUS_POLLING_DELAY);
@@ -106,15 +109,20 @@ public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRo
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
+		if (caught instanceof TDGWTSessionExpiredException) {
+			eventBus.fireEvent(new SessionExpiredEvent(
+					SessionExpiredType.EXPIREDONSERVER));
+		} else {
 			ok.setVisible(true);
 			this.trId = null;
 			UtilsGXT3.alert("Error Deleting Rows", reason);
 		}
+	}
 
 	public void updateInvocation() {
 		if (trId != null) {
-				ChangeTableRequestEvent changeTableRequestEvent=
-						new ChangeTableRequestEvent(ChangeTableRequestType.DUPLICATES, trId,why);
+			ChangeTableRequestEvent changeTableRequestEvent = new ChangeTableRequestEvent(
+					ChangeTableRequestType.DUPLICATES, trId, why);
 			eventBus.fireEvent(changeTableRequestEvent);
 		}
 		hide();
@@ -122,7 +130,8 @@ public class DuplicatesRowsProgressDialog extends Window implements DuplicatesRo
 
 	@Override
 	public void operationStopped(TRId trId, String reason, String details) {
-			Log.debug("Operation Stopped: ["+trId.toString()+", "+reason+", "+details+"]");
+		Log.debug("Operation Stopped: [" + trId.toString() + ", " + reason
+				+ ", " + details + "]");
 		ok.setVisible(true);
 		this.trId = trId;
 		why = ChangeTableWhy.TABLECURATION;

src/main/java/org/gcube/portlets/user/td/tablewidget/client/progress/EditRowProgressDialog.java

@@ -1,10 +1,13 @@
 package org.gcube.portlets.user.td.tablewidget.client.progress;
 
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.tablewidget.client.rows.EditRowPanel;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -22,11 +25,12 @@ import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 /**
  * 
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
-public class EditRowProgressDialog extends Window implements EditRowProgressListener {
+public class EditRowProgressDialog extends Window implements
+		EditRowProgressListener {
 	public static final int STATUS_POLLING_DELAY = 1000;
 	protected String WIDTH = "400px";
 	protected String HEIGHT = "120px";
@@ -55,7 +59,6 @@ public class EditRowProgressDialog extends Window implements EditRowProgressList
 
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 
-			
 		ProgressBar progressBar = new ProgressBar();
 
 		ok = new TextButton("OK");
@@ -67,14 +70,13 @@ public class EditRowProgressDialog extends Window implements EditRowProgressList
 			}
 		});
 
-			v.add(progressBar, new VerticalLayoutData(1,
-					1, new Margins(5, 5, 5, 5)));
+		v.add(progressBar,
+				new VerticalLayoutData(1, 1, new Margins(5, 5, 5, 5)));
 
 		panel.add(v);
 		panel.addButton(ok);
 		add(panel);
 
-			
 		progressUpdater = new EditRowProgressUpdater();
 		progressUpdater.addListener(new EditRowProgressBarUpdater(progressBar));
 
@@ -104,16 +106,20 @@ public class EditRowProgressDialog extends Window implements EditRowProgressList
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
+		if (caught instanceof TDGWTSessionExpiredException) {
+			eventBus.fireEvent(new SessionExpiredEvent(
+					SessionExpiredType.EXPIREDONSERVER));
+		} else {
 			ok.setVisible(true);
 			this.trId = null;
 			UtilsGXT3.alert("Error", reason);
-			
+		}
 	}
 
 	public void updateInvocation() {
 		if (trId != null) {
-				ChangeTableRequestEvent changeTableRequestEvent=
-						new ChangeTableRequestEvent(ChangeTableRequestType.EDITROW, trId,why);
+			ChangeTableRequestEvent changeTableRequestEvent = new ChangeTableRequestEvent(
+					ChangeTableRequestType.EDITROW, trId, why);
 			eventBus.fireEvent(changeTableRequestEvent);
 		}
 		parent.close();
@@ -122,7 +128,8 @@ public class EditRowProgressDialog extends Window implements EditRowProgressList
 
 	@Override
 	public void operationStopped(TRId trId, String reason, String details) {
-			Log.debug("Operation Stopped: ["+trId.toString()+", "+reason+", "+details+"]");
+		Log.debug("Operation Stopped: [" + trId.toString() + ", " + reason
+				+ ", " + details + "]");
 		ok.setVisible(true);
 		this.trId = trId;
 		why = ChangeTableWhy.TABLECURATION;

src/main/java/org/gcube/portlets/user/td/tablewidget/client/progress/RollBackProgressDialog.java

@@ -1,10 +1,13 @@
 package org.gcube.portlets.user.td.tablewidget.client.progress;
 
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.history.RollBackSession;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
 import org.gcube.portlets.user.td.widgetcommonevent.client.event.ChangeTableRequestEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableRequestType;
 import org.gcube.portlets.user.td.widgetcommonevent.client.type.ChangeTableWhy;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -22,11 +25,12 @@ import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
 /**
  * 
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  * 
  */
-public class RollBackProgressDialog extends Window implements RollBackProgressListener {
+public class RollBackProgressDialog extends Window implements
+		RollBackProgressListener {
 	public static final int STATUS_POLLING_DELAY = 1000;
 	protected String WIDTH = "400px";
 	protected String HEIGHT = "120px";
@@ -37,7 +41,8 @@ public class RollBackProgressDialog extends Window implements RollBackProgressLi
 	protected TRId trId;
 	private ChangeTableWhy why;
 
-		public RollBackProgressDialog(RollBackSession rollBackSession, EventBus eventBus) {
+	public RollBackProgressDialog(RollBackSession rollBackSession,
+			EventBus eventBus) {
 		this.rollBackSession = rollBackSession;
 		this.eventBus = eventBus;
 		setWidth(WIDTH);
@@ -55,7 +60,6 @@ public class RollBackProgressDialog extends Window implements RollBackProgressLi
 
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 
-			
 		ProgressBar progressBar = new ProgressBar();
 
 		ok = new TextButton("OK");
@@ -67,16 +71,16 @@ public class RollBackProgressDialog extends Window implements RollBackProgressLi
 			}
 		});
 
-			v.add(progressBar, new VerticalLayoutData(1,
-					1, new Margins(5, 5, 5, 5)));
+		v.add(progressBar,
+				new VerticalLayoutData(1, 1, new Margins(5, 5, 5, 5)));
 
 		panel.add(v);
 		panel.addButton(ok);
 		add(panel);
 
-			
 		progressUpdater = new RollBackProgressUpdater();
-			progressUpdater.addListener(new RollBackProgressBarUpdater(progressBar));
+		progressUpdater
+				.addListener(new RollBackProgressBarUpdater(progressBar));
 
 		progressUpdater.addListener(this);
 		progressUpdater.scheduleRepeating(STATUS_POLLING_DELAY);
@@ -104,16 +108,20 @@ public class RollBackProgressDialog extends Window implements RollBackProgressLi
 
 	public void operationFailed(Throwable caught, String reason,
 			String failureDetails) {
+		if (caught instanceof TDGWTSessionExpiredException) {
+			eventBus.fireEvent(new SessionExpiredEvent(
+					SessionExpiredType.EXPIREDONSERVER));
+		} else {
 			ok.setVisible(true);
 			this.trId = null;
 			UtilsGXT3.alert("Error in RollBack", reason);
-			
+		}
 	}
 
 	public void updateInvocation() {
 		if (trId != null) {
-				ChangeTableRequestEvent changeTableRequestEvent=
-						new ChangeTableRequestEvent(ChangeTableRequestType.DELETEROWS, trId,why);
+			ChangeTableRequestEvent changeTableRequestEvent = new ChangeTableRequestEvent(
+					ChangeTableRequestType.DELETEROWS, trId, why);
 			eventBus.fireEvent(changeTableRequestEvent);
 		}
 		hide();
@@ -121,7 +129,8 @@ public class RollBackProgressDialog extends Window implements RollBackProgressLi
 
 	@Override
 	public void operationStopped(TRId trId, String reason, String details) {
-			Log.debug("Operation Stopped: ["+trId.toString()+", "+reason+", "+details+"]");
+		Log.debug("Operation Stopped: [" + trId.toString() + ", " + reason
+				+ ", " + details + "]");
 		ok.setVisible(true);
 		this.trId = trId;
 		why = ChangeTableWhy.TABLECURATION;

src/main/java/org/gcube/portlets/user/td/tablewidget/client/rows/DeleteRows.java

@@ -3,9 +3,12 @@ package org.gcube.portlets.user.td.tablewidget.client.rows;
 import java.util.ArrayList;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.rows.DeleteRowsSession;
 import org.gcube.portlets.user.td.tablewidget.client.progress.DeleteRowsProgressDialog;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -37,25 +40,29 @@ public class DeleteRows {
 	}
 
 	protected void onDelete() {
-			TDGWTServiceAsync.INSTANCE.startDeleteRows(
-					deleteRowsSession, new AsyncCallback<Void>() {
+		TDGWTServiceAsync.INSTANCE.startDeleteRows(deleteRowsSession,
+				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.debug("Delete Rows Error: "
 									+ caught.getLocalizedMessage());
-							UtilsGXT3.alert("Error Deleting Rows",
+							UtilsGXT3
+									.alert("Error Deleting Rows",
 											"Error in invocation Delete Rows operation!");
-
+						}
 					}
 
 					public void onSuccess(Void result) {
-							deleteRowsProgressDialog= new DeleteRowsProgressDialog(deleteRowsSession, eventBus);
+						deleteRowsProgressDialog = new DeleteRowsProgressDialog(
+								deleteRowsSession, eventBus);
 					}
 
 				});
 
-		
 	}
 
-	
 }

src/main/java/org/gcube/portlets/user/td/tablewidget/client/rows/DuplicatesRowsPanel.java

@@ -4,11 +4,14 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.rows.DuplicatesSession;
 import org.gcube.portlets.user.td.tablewidget.client.progress.DuplicatesRowsProgressDialog;
 import org.gcube.portlets.user.td.tablewidget.client.properties.ColumnDataProperties;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -147,20 +150,18 @@ public class DuplicatesRowsPanel extends FramedPanel {
 		};
 		validatesButton.addSelectHandler(validatesHandler);
 
-
 		FieldLabel columnsLabel = new FieldLabel(null, "Columns");
 		columnsLabel.getElement().applyStyles("font-weight:bold");
 		HBoxLayoutContainer hBox = new HBoxLayoutContainer();
 		hBox.add(validatesButton, new BoxLayoutData(new Margins(2, 5, 2, 5)));
 		hBox.add(deleteButton, new BoxLayoutData(new Margins(2, 5, 2, 5)));
 
-		
 		VerticalLayoutContainer v = new VerticalLayoutContainer();
 		v.setScrollMode(ScrollMode.AUTO);
-		v.add(columnsLabel, new VerticalLayoutData(-1, -1, new Margins(2,1,5,1)));
+		v.add(columnsLabel, new VerticalLayoutData(-1, -1, new Margins(2, 1, 5,
+				1)));
 		v.add(grid, new VerticalLayoutData(1, -1, new Margins(0)));
-		v.add(hBox, new VerticalLayoutData(-1, -1, new Margins(10, 0,
-				10, 0)));
+		v.add(hBox, new VerticalLayoutData(-1, -1, new Margins(10, 0, 10, 0)));
 		add(v, new VerticalLayoutData(-1, -1, new Margins(0)));
 
 	}
@@ -182,10 +183,15 @@ public class DuplicatesRowsPanel extends FramedPanel {
 				new AsyncCallback<ArrayList<ColumnData>>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("load columns failure:"
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert("Error retrieving columns",
 									"Error retrieving columns");
+						}
 						callback.onFailure(caught);
 					}
 
@@ -203,8 +209,7 @@ public class DuplicatesRowsPanel extends FramedPanel {
 	protected void onDeleteDuplicate() {
 		ArrayList<ColumnData> col = getSelectedItems();
 		if (col == null || col.size() < 1) {
-			UtilsGXT3.alert("Attention",
-					"Attention no column selected!");
+			UtilsGXT3.alert("Attention", "Attention no column selected!");
 			return;
 		}
 		duplicatesSession = new DuplicatesSession(trId, col,
@@ -214,11 +219,16 @@ public class DuplicatesRowsPanel extends FramedPanel {
 				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.debug("Delete Duplicates Error: "
 									+ caught.getLocalizedMessage());
-						UtilsGXT3.alert("Error Deleting Rows",
+							UtilsGXT3
+									.alert("Error Deleting Rows",
 											"Error in invocation Delete Duplicates operation!");
-
+						}
 					}
 
 					public void onSuccess(Void result) {
@@ -230,12 +240,10 @@ public class DuplicatesRowsPanel extends FramedPanel {
 
 	}
 
-	
 	protected void onValidatesDuplicate() {
 		ArrayList<ColumnData> col = getSelectedItems();
 		if (col == null || col.size() < 1) {
-			UtilsGXT3.alert("Attention",
-					"Attention no column selected!");
+			UtilsGXT3.alert("Attention", "Attention no column selected!");
 			return;
 		}
 		duplicatesSession = new DuplicatesSession(trId, col,
@@ -245,11 +253,16 @@ public class DuplicatesRowsPanel extends FramedPanel {
 				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.debug("Validates Duplicates Error: "
 									+ caught.getLocalizedMessage());
-						UtilsGXT3.alert("Error Deleting Rows",
+							UtilsGXT3
+									.alert("Error Deleting Rows",
 											"Error in invocation Validates Duplicates operation!");
-
+						}
 					}
 
 					public void onSuccess(Void result) {
@@ -261,7 +274,4 @@ public class DuplicatesRowsPanel extends FramedPanel {
 
 	}
 
-
-	
-
 }

src/main/java/org/gcube/portlets/user/td/tablewidget/client/rows/EditRowPanel.java

@@ -15,6 +15,8 @@ import org.gcube.portlets.user.td.gwtservice.shared.tr.rows.EditRowSession;
 import org.gcube.portlets.user.td.tablewidget.client.progress.EditRowProgressDialog;
 import org.gcube.portlets.user.td.tablewidget.client.resources.ResourceBundle;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.CellData;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.grid.model.RowRaw;
@@ -195,11 +197,15 @@ public class EditRowPanel extends FramedPanel {
 				new AsyncCallback<ArrayList<ColumnData>>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("load columns failure:"
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert("Error retrieving columns",
 									"Error retrieving columns");
-
+						}
 					}
 
 					public void onSuccess(ArrayList<ColumnData> result) {
@@ -588,18 +594,17 @@ public class EditRowPanel extends FramedPanel {
 		}
 	}
 
-	
-
 	protected void callEditRow(EditRowSession editRowSession) {
 		final EditRowPanel panel = this;
 
-		TDGWTServiceAsync.INSTANCE.startEditRow(editRowSession,new AsyncCallback<Void>() {
+		TDGWTServiceAsync.INSTANCE.startEditRow(editRowSession,
+				new AsyncCallback<Void>() {
 
 					public void onFailure(Throwable caught) {
-				Log.debug("EditRow: "
-						+ caught.getLocalizedMessage());
+						Log.debug("EditRow: " + caught.getLocalizedMessage());
 						if (caught instanceof TDGWTSessionExpiredException) {
-					UtilsGXT3.alert("Attention",caught.getLocalizedMessage());
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
 						} else {
 							UtilsGXT3.alert("Error",
 									"Error in operation invocation!");
@@ -611,7 +616,6 @@ public class EditRowPanel extends FramedPanel {
 								panel, eventBus);
 					}
 
-		
 				});
 
 	}

src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTablePanel.java

@@ -4,12 +4,15 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.TableData;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.table.Validations;
 import org.gcube.portlets.user.td.gwtservice.shared.tr.table.metadata.TabValidationsMetadata;
 import org.gcube.portlets.user.td.tablewidget.client.properties.ValidationsProperties;
 import org.gcube.portlets.user.td.tablewidget.client.resources.ResourceBundle;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 
 import com.allen_sauer.gwt.log.client.Log;
@@ -63,7 +66,6 @@ public class ValidationsTablePanel extends FramedPanel {
 
 	}
 
-	
 	public ValidationsTablePanel(TRId trId, EventBus eventBus) {
 		super();
 		this.trId = trId;
@@ -95,14 +97,13 @@ public class ValidationsTablePanel extends FramedPanel {
 
 			@Override
 			public void render(Context context, String value, SafeHtmlBuilder sb) {
-				sb.appendHtmlConstant("<span title='"+value+"'>"
-						+ value + "</span>");
+				sb.appendHtmlConstant("<span title='" + value + "'>" + value
+						+ "</span>");
 
 			}
 
 		});
 
-		
 		ColumnConfig<Validations, Boolean> validCol = new ColumnConfig<Validations, Boolean>(
 				props.valid(), 28, "Valid");
 		validCol.setCell(new AbstractCell<Boolean>() {
@@ -176,7 +177,6 @@ public class ValidationsTablePanel extends FramedPanel {
 		grid.getView().setAutoExpandColumn(descriptionCol);
 		grid.getView().setEmptyText("No validation");
 
-		
 		add(grid, new MarginData(0));
 
 		onResize();
@@ -190,11 +190,16 @@ public class ValidationsTablePanel extends FramedPanel {
 				new AsyncCallback<TabValidationsMetadata>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Load validations metadata failure: "
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert(
 									"Error retrieving validations metadata",
 									"Error retrieving validations metadata");
+						}
 						callback.onFailure(caught);
 					}
 
@@ -218,8 +223,6 @@ public class ValidationsTablePanel extends FramedPanel {
 
 	}
 
-	
-	
 	public void update() {
 		retrieveCurrentTR();
 		loader.load();
@@ -230,16 +233,19 @@ public class ValidationsTablePanel extends FramedPanel {
 		loader.load();
 	}
 
-
 	protected void retrieveCurrentTR() {
 		TDGWTServiceAsync.INSTANCE.getCurrentTRId(new AsyncCallback<TRId>() {
 
 			public void onFailure(Throwable caught) {
+				if (caught instanceof TDGWTSessionExpiredException) {
+					eventBus.fireEvent(new SessionExpiredEvent(
+							SessionExpiredType.EXPIREDONSERVER));
+				} else {
 					Log.error("Error retrieving current TRId: "
 							+ caught.getLocalizedMessage());
 					UtilsGXT3.alert("Error",
 							"Error retrieving current tabular resource id");
-
+				}
 			}
 
 			public void onSuccess(TRId result) {
@@ -254,5 +260,4 @@ public class ValidationsTablePanel extends FramedPanel {
 		});
 	}
 
-
 }

src/main/java/org/gcube/portlets/user/td/tablewidget/client/validation/ValidationsTasksPanel.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
+import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
 import org.gcube.portlets.user.td.gwtservice.shared.task.ValidationsTasksMetadata;
 import org.gcube.portlets.user.td.tablewidget.client.resources.ResourceBundle;
 import org.gcube.portlets.user.td.tablewidget.client.util.UtilsGXT3;
@@ -11,6 +12,8 @@ import org.gcube.portlets.user.td.tablewidget.client.validation.tree.BaseDto;
 import org.gcube.portlets.user.td.tablewidget.client.validation.tree.FolderDto;
 import org.gcube.portlets.user.td.tablewidget.client.validation.tree.TreeDataGenerator;
 import org.gcube.portlets.user.td.tablewidget.client.validation.tree.ValidationDto;
+import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
 import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
 import com.sencha.gxt.widget.core.client.event.CollapseItemEvent.CollapseItemHandler;
 import com.allen_sauer.gwt.log.client.Log;
@@ -214,7 +217,6 @@ public class ValidationsTasksPanel extends FramedPanel {
 		tree.setColumnResize(true);
 		tree.getView().setAutoExpandColumn(cc1);
 
-		
 		IconProvider<BaseDto> iconProvider = new IconProvider<BaseDto>() {
 
 			@Override
@@ -257,7 +259,6 @@ public class ValidationsTasksPanel extends FramedPanel {
 			}
 		});
 
-		
 		ToolBar toolBar = new ToolBar();
 
 		TextButton btnExpandAll = new TextButton();
@@ -274,7 +275,6 @@ public class ValidationsTasksPanel extends FramedPanel {
 		});
 		toolBar.add(btnExpandAll);
 
-		
 		TextButton btnCollapseAll = new TextButton();
 		// btnReload.setText("Expand All");
 		btnCollapseAll.setIcon(ResourceBundle.INSTANCE.expandAll12());
@@ -289,15 +289,11 @@ public class ValidationsTasksPanel extends FramedPanel {
 		});
 		toolBar.add(btnCollapseAll);
 
-		
-		
 		con.add(toolBar, new VerticalLayoutData(1, -1));
 		con.add(tree, new VerticalLayoutData(1, -1));
 
 		add(con, new MarginData(0));
 
-		
-		
 	}
 
 	protected void retrieveValidations() {
@@ -306,12 +302,16 @@ public class ValidationsTasksPanel extends FramedPanel {
 				new AsyncCallback<ValidationsTasksMetadata>() {
 
 					public void onFailure(Throwable caught) {
+						if (caught instanceof TDGWTSessionExpiredException) {
+							eventBus.fireEvent(new SessionExpiredEvent(
+									SessionExpiredType.EXPIREDONSERVER));
+						} else {
 							Log.error("Load validations metadata failure: "
 									+ caught.getLocalizedMessage());
 							UtilsGXT3.alert(
 									"Error retrieving validations metadata",
 									"Error retrieving validations metadata");
-
+						}
 					}
 
 					public void onSuccess(ValidationsTasksMetadata result) {
@@ -338,11 +338,15 @@ public class ValidationsTasksPanel extends FramedPanel {
 		TDGWTServiceAsync.INSTANCE.getCurrentTRId(new AsyncCallback<TRId>() {
 
 			public void onFailure(Throwable caught) {
+				if (caught instanceof TDGWTSessionExpiredException) {
+					eventBus.fireEvent(new SessionExpiredEvent(
+							SessionExpiredType.EXPIREDONSERVER));
+				} else {
 					Log.error("Error retrieving current TRId: "
 							+ caught.getLocalizedMessage());
 					UtilsGXT3.alert("Error",
 							"Error retrieving current tabular resource id");
-
+				}
 			}
 
 			public void onSuccess(TRId result) {