Need help fixing fdo#38557

Hi

I'm currently looking at fdo#38557 [1] and could use some pointers. 
Summary of the bug: After using the Header and footer dialog (View menu) 
changes does not get displayed until you add a new page (or something 
else that triggers an update of the page layout).

I tracked down the dialog to headerfooterdlg.cxx [2] the 
HeaderFooterDialog:apply is called from ApplyToAll or Apply depending on 
witch button you press.

In HeaderFooterDialog::apply the properties from the dialog is set but 
it does not update the view on screen.

Where is such an update supposed to happen? In the execute function? Is 
it even supposed to be handled in headerfooterdlg.cxx or do I have to go 
deeper?


[1] https://bugs.freedesktop.org/show_bug.cgi?id=38557
[2] 
http://opengrok.libreoffice.org/xref/core/sd/source/ui/dlg/headerfooterdlg.cxx#304

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Thankful for any guidence,
Niklas Johansson