diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/WidgetRequestEvent.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/WidgetRequestEvent.java
new file mode 100644
index 0000000..f024531
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/event/WidgetRequestEvent.java
@@ -0,0 +1,65 @@
+package org.gcube.portlets.user.td.widgetcommonevent.client.event;
+
+import org.gcube.portlets.user.td.widgetcommonevent.client.type.WidgetRequestType;
+import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;
+
+import com.google.gwt.event.shared.EventHandler;
+import com.google.gwt.event.shared.GwtEvent;
+import com.google.gwt.event.shared.HandlerRegistration;
+import com.google.gwt.event.shared.HasHandlers;
+
+/**
+ * 
+ * @author "Giancarlo Panichi" 
+ * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ *
+ */
+public class WidgetRequestEvent extends GwtEvent<WidgetRequestEvent.WidgetRequestEventHandler> {
+
+	public static Type<WidgetRequestEventHandler> TYPE = new Type<WidgetRequestEventHandler>();
+	private WidgetRequestType widgetRequestType;
+	private TRId trId;
+	
+	public interface WidgetRequestEventHandler extends EventHandler {
+		void onWidgetRequest(WidgetRequestEvent event);
+	}
+
+	public interface HasWidgetRequestEventHandler extends HasHandlers{
+		public HandlerRegistration addWidgetRequestEventHandler(WidgetRequestEventHandler handler);
+	}
+	
+	public WidgetRequestEvent(WidgetRequestType closeType) {
+		this.widgetRequestType = closeType;
+	}
+
+	public WidgetRequestType getWidgetRequestType() {
+		return widgetRequestType;
+	}
+
+	@Override
+	protected void dispatch(WidgetRequestEventHandler handler) {
+		handler.onWidgetRequest(this);
+	}
+
+	@Override
+	public Type<WidgetRequestEventHandler> getAssociatedType() {
+		return TYPE;
+	}
+
+	public static Type<WidgetRequestEventHandler> getType() {
+		return TYPE;
+	}
+
+	public static void fire(HasHandlers source, WidgetRequestType widgetRequestType) {
+		source.fireEvent(new WidgetRequestEvent(widgetRequestType));
+	}
+	
+	public TRId getTrId() {
+		return trId;
+	}
+
+	public void setTrId(TRId trId) {
+		this.trId = trId;
+	}
+	
+}
diff --git a/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/type/WidgetRequestType.java b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/type/WidgetRequestType.java
new file mode 100644
index 0000000..3bf3e1d
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/td/widgetcommonevent/client/type/WidgetRequestType.java
@@ -0,0 +1,14 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.td.widgetcommonevent.client.type;
+
+/**
+ * 
+ * @author "Giancarlo Panichi" 
+ * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ *
+ */
+public enum WidgetRequestType {
+	CHANGECOLUMNTYPEPANEL;
+}