D4Science Infrastructure

This problem is clear, and is due to the fact that upon back button the server method (in the portlet java) which is supposed to set te Context (scope) is not called.
To overcome this limitation @g.panichi@isti.cnr.it can use the ClientScopeHelper class as follows:

public void onModuleLoad() {

ClientScopeHelper.getService().setScope(Location.getHref(), new AsyncCallback() {
@Override
public void onSuccess(Boolean result) {
doWhateverYouWereDoing
}

@Override
public void onFailure(Throwable caught) {

}
});

The class is in

<groupId>org.gcube.portlets.user</groupId>
<artifactId>gcube-widgets</artifactId>

don't forget to put in your taxman portlet web.xml (clearly replace /$YOUR_SERVLET_URL_PATTERN)

    <servlet>
        <servlet-name>scopeService</servlet-name>
        <servlet-class>org.gcube.portlets.user.gcubewidgets.server.ScopeServiceImpl</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>scopeService</servlet-name>
        <url-pattern>/$YOUR_SERVLET_URL_PATTERN/scopeService</url-pattern>
    </servlet-mapping>