[Libreoffice] making binfilter aka StarOffice FileFormat read-only

[Pierre-André Jacquod]

Hi,

>> in binfilter as read-only filters (using as filter flag
>> SFX_FILTER_OPENREADONLY defined as 0x00010000L) This will make the
>> opening read-only. By this way, this is not possible any more to save

> IIRC the resolution was a bit different ;-)  
you are right:-)

> This way the user will be
> unable to modify the document, unless she uses the 'create copy'
> possibility, right?
Exact, or first SaveAs and choosing another format.

> The proposal was to load it so that it is read/write, but issue a
> warning like "The format of the file you opened is legacy, and [...]
> As... menu (and consequently from Save).

> remove EXPORT from filter/source/config/fragments/filters/StarWriter_5_0.xcu

Tested. It works (almost) fine. And since there is no EXPORT anymore,
the filter is not available in SaveAs, and when clicking Save, you get
the SaveAs pop-up automatically. But I have 2 points:

Thus, there is a major difference: With READONLY, no lock-file is
generated when the file is openend. With filter without the EXPORT, the
lock-file is still generated.... This comes during the load process,
where the SfxMedium::IsReadOnly() function is called in order to decide
if this lock-file has to be created or not.(Not spotted the exact place yet)

Actually, I think this is not a correct behaviour. If the filter is not
EXPORT; there is no reason to create the lock-file ? or ???
Should I consider changing the code of the loading part, in order to not
create a lock-file if the filter has not EXPORT properties? From file
point of view, this is the same case: you can not save this file "as-is".

Second issue I see: (I just though of it right now, did not yet test /
investigate): with opening in read/write and without EXPORT filter, what
happens with the auto-save option, after some changes have been done?
The filter, despite write is not usable (no export). ...

So ideally could it be: not export, READONLY and pop-up ?? :- /

>> c) it seems there are elements in the sfx2 of binfilter that are still
>> called, generated, but have no impact on the running system.
> 
> Yes - I think Caolan's callcatches might help you here a lot.
Though of it and looked, but actually not in the above case.

> As outlined above, my favorite approach would be to 'disconnect' the
> binfilter from the save functionality first, add the dialog on open, and
dialog pop-up just at the end of loading the document ? will search for
the right place.

> I hope I helped a bit, 
yes thanks
> please ask more if not really :-)
Thanks

regards
Pierre-André