How to manipulate the back command manually?

[mikko.nu...@gmail.com]

Hello again,

I have a situation where I should manipulate the back command somehow. I have an insert view that is accessed from list view and the result of insertion is naturally new object that is shown in it's own view. In other words: "List of objects" --> "Insert New Object" --> "Object". Now when the insertion is complete and object's view is shown, the back button reverses: "Object" --> "Insert New Object" --> "List of Objects" which of course is how the application sees it. But the way I want it to be is "Object" --> "List of Objects" after insertion. Is there a way manipulate the system so that I could implement this or more complex situations? I guess the previous form form lives in form itself and it is not so easy since we dont always know which form to back?

[Shai Almog]

Hi,
sure. You can use setBackDestination to a form name that's in the stack in order to skip redundant stages.

[mikko.nu...@gmail.com]

Okay,

thank you... but when / where should I actually invoke it? My stack was following: "Customer" --> "Visits" --> "Insert Visit" --> "Visit". I added the attached code line to before show method of "Visit" form. But then the reversed stack was "Visit" --> "Insert Visit" --> "Customer"... so something funny happened and "Visits" disappeared completely. I saw with debugger that it did remove "Insert Visit" from baseFormNavigationStack but back button got messed up obviously. It worked with "Customer" --> "Visits" --> "Visit" ("Visit" --> "Visits" etc.) but baseFormNavigationStack is never touched since "Visits" is naturally a top of it.

setBackDestination("Visits");

[Shai Almog]

You should invoke it in the before show of the form where you want the back to behave differently.

[mikko.nu...@gmail.com]

I did that, worked the way I described... a bug?

[Shai Almog]

Are you using the form name or the form title?
setBackDestination just unwinds the stack of the navigation, its pretty simple.

[mikko.nu...@gmail.com]

Form name, they both are identical though. As said, I saw with debugger that the stack was successfully altered... but the back-button still showed the form it should've skipped.

[Shai Almog]

I see a problem there, not sure when it cropped up. Can you please file an issue on this?

[mikko.nu...@gmail.com]

Sure, about third issue in a month :P. Are you going to buy me a beer in next JavaOne :D?

[Shai Almog]

Not sure I'm going this year. Right now we have so many issues that adding additional ones doesn't really make me happy...