"Printable Page" button causes isBackNavigationFired(true)

Question

I ve got the following problem
I have a train implemented with 3 pages. On every page we don't allow the users to use the BrowserBack button.
    if (pageContext.isBackNavigationFired(true))
      pageContext.redirectToDialogPage(new OADialogPage(NAVIGATION_ERROR));
    }     Page 3 (Review page) contains the "submit" and a "Printable Page" button.
Properties for "Printable Page" button
destination URI : OA.jsp?page=pagePG&retainAM=Y&OARF=printable
target frame : _blank
When we press the submit button, everything is saved correctly. but when we first use the "Printable Page" button (opens a new window) and then submit, the OA framework detects that we used the BroweserBack Button. Submitting the data becomes impossible.
Does anyone knows what I'm doing wrong, or is this normal behaviour.

Answer 1

Hi,
You will not be able to get around this. When you navigate to your printable page, the framework increments the oapc parameter (it adds 1 to the original value). When you then go back and action something on the previous page, the framework compares the value in the URL with the value it stores in memory. If the values do not match it re-fires processRequest because the bean hierarchy could be invalid (it's probably not in your case).
So you will have to think of a way around this.
Why are you not letting users use the back button? You can write your application so that you code around any use of the back button. For example, if you are passing parameters on the request, put them on the transaction. When the user hits the back button, OA Framework will re-execute processRequest, if the parameters are null you can fetch them from the transaction (assuming it is retained).
Hope this helps.
Cheers,
Dave