How to get Page state (Multimap<String,String>) passed from previous page?

[rathiandi]

Hi,

I can't find a way to load page state passed from previous page. For example:

Let's say I have two pages called Pge1 and Page2.

And inside page one if i say :

Multimap<String,String> map = ArrayListMultimap.create();

map.put(ERROR, throwable.getMessage());

page2.go(map);

Now, how do i find this map in Page2?

Thanks in advance.

[csa]

Hi Amit,

You can get access to the page state using fields annotated with @PageState in your Page2 or via an optional parameter of type HistoryToken in methods annotated with @PageShowing or @PageShown.

@Page
public class Page2 extends VerticalPanel {

  @PageState
  private String error;
  //By default, the field name should be aligned with the key you used when storing the state in the map.
  //You can change that using @PageState("myKey")
...
}

or

@Page
public class Page2 extends VerticalPanel {
  @PageShowing
  private void beforeShow(HistoryToken rawStateToken) {
    String message = rawStateToken.getState().get(ERROR);
   ....
  }
}

See the docs for details: http://docs.jboss.org/errai/2.4.3.Final/errai/reference/html_single/#sid-54493676_ErraiUINavigation-DeclaringaPage (Page State Parameters)

Cheers,

Christian