Review Request: Support for GRUB2 submenus

[Oswald Buddenhagen]

> On Aug. 6, 2012, 6:26 a.m., Oswald Buddenhagen wrote:
> > ksmserver/shutdowndlg.cpp, line 488
> > <http://git.reviewboard.kde.org/r/105563/diff/14/?file=76096#file76096line488>
> >
> >     as you make assumptions about the list structure below anyway, you can just make the menus a stack (though then you need a condition to track when you need to pop items - but that's still shorter and more elegant than this findMenu stuff, i think).
> 
> Konstantinos Smanis wrote:
>     I could be wrong but how is this gonna work with nested submenus?
>     
>     submenu 'foo' {
>       menuentry 'bar' {
>       }
>       submenu 'baz' {
>         menuentry 'test' {
>         }
>       }
>       menuentry 'test2' {
>       }
>     }
>     
>     You pop once to get foo from the stack, add bar to foo, then pop baz and foo is gone; where will test2 go?

eh? foo stays on the stack till the end.

i think the algorithm is more or less like this:

while not nested into current menu
  pop current menu
# you already have the following part
if submenu
  push current menu
else
  add entry


- Oswald


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On Aug. 5, 2012, 1:25 p.m., Konstantinos Smanis wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/105563/
> -----------------------------------------------------------
> 
> (Updated Aug. 5, 2012, 1:25 p.m.)
> 
> 
> Review request for KDE Runtime and Oswald Buddenhagen.
> 
> 
> Description
> -------
> 
> Recent versions of GRUB2 introduce submenus which allow for nesting levels to appear (instead of the flat list in the past).
> This patch consists of two parts: the parsing part in KDM (bootman.c) and creating a menu structure from the parsed list in ksmserver (shutdowndlg.*)
> The parsing part produces a list like this:
> 
> Gentoo GNU/Linux
> Advanced options for Gentoo GNU/Linux
> Advanced options for Gentoo GNU/Linux>Gentoo GNU/Linux, with Linux 3.4.4
> Advanced options for Gentoo GNU/Linux>Gentoo GNU/Linux, with Linux 3.4.4 (recovery mode)
> Windows 7 (loader) (on /dev/sda2)
> ???? ?????????
> 
> which is then converted into the menu structure. These full identifiers can be properly used with `grub2-reboot`.
> 
> More info about submenus: http://ubuntuforums.org/showthread.php?p=10720316
> Also check the related bug.
> 
> The parsing part of the patch can be applied in the KDE/4.9 and master branches as well (tested and working in KDE 4.8.95 and 4.9.x). ksmserver has migrated to QML since then however, and the menu structure has to wait. Currently it looks like this: http://i50.tinypic.com/96bw35.png
> Related ML-discussion: http://lists.kde.org/?l=kde-core-devel&m=134160279511422&w=2
> Update: There is a proper fix now for KDE/4.9 and master: https://git.reviewboard.kde.org/r/105568/
> 
> 
> This addresses bug 297209.
>     http://bugs.kde.org/show_bug.cgi?id=297209
> 
> 
> Diffs
> -----
> 
>   kdm/backend/bootman.c 8b834d2 
>   kdm/backend/dm.h 13e7b45 
>   kdm/backend/util.c 6cd93ef 
>   ksmserver/shutdowndlg.h e5f0942 
>   ksmserver/shutdowndlg.cpp a09a1a7 
> 
> Diff: http://git.reviewboard.kde.org/r/105563/diff/
> 
> 
> Testing
> -------
> 
> Works with the menu file produced in my system with `grub2-mkconfig`.
> Also works with a custom menu file I made (as shown in the second screenshot).
> 
> 
> Screenshots
> -----------
> 
> Distribution's stock menu file
>   http://git.reviewboard.kde.org/r/105563/s/633/
> A custom menu file for testing
>   http://git.reviewboard.kde.org/r/105563/s/634/
> 
> 
> Thanks,
> 
> Konstantinos Smanis
> 
>

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