Is Navigation Confirmation supported?

[pmwqldjb]

From my initial review of Errai UI Navigation it appears that it does not support navigation confirmation as other frameworks such as GWT-Platform and Mvp4G. Is this correct?

If it doesn't it would be beneficial if it did, as it can be used to notify the user of unsaved data changes on the page. It could work something like this.

@Page

public class SomePage extends Composite {

  ...

  @PageConfirmation

  public void confirm( NavigationEventCommand event ) {

   // ask the user what they want to do; "Leave page and loose changes or Stay on page"

   // of course the following code is in a callback from a pop-up dialog, so it must be asynchronous       

     if  (response = "LEAVE") {

          event.fireEvent();     // this results in the non-interruptible navigation

     }

  }

  ...

}

If the page has an annotated @PageConfirmation method then it has the chance to stop the navigation, alternatively without the @PageConfirmation the navigation is always non-interruptible.

[csa]

Hi Paul,

This is currently not supported but I like the idea. An alternative would be to integrate that functionality with the existing @PageHiding feature. So, basically add support for an optional parameter to @PageHiding lifecycle methods which allows to proceed (or stop) the current transition.

Do you want to create a JIRA for us: https://issues.jboss.org/browse/ERRAI

Of course, you're more than welcome to take a stab at implementing this and us send a pull request!

Cheers,

Christian

[pmwqldjb]

I have raised this issue https://issues.jboss.org/browse/ERRAI-737