Re: Proposal: "Preview" shell for EoG/gpdf/ggv

[Jens Finke <jens triq net>]

On Mon, 10 Feb 2003, Gustavo J. A. M.  Carneiro wrote:
> 
>   There is already a set of interfaces for this. These interfaces are:
> 	1. Bonobo::Control, for actually displaying some file;
> 	2. Bonobo::PersistStream, for load-save, which of course could be
> constrained to loading only, and never saved;
> 	3. Bonobo::Stream: a stream for an arbitrary URI can easily be created
> through monikers [1]:
> 	 stream = bonobo_get_object("vfs:ftp://server/dir/file.ext";,
> "Bonobo/Stream");
> 
> 	Currently, the EOG shell uses Bonobo::PersistFile instead of (2),
> but it can be easily fixed.

Well actually, eog supports both interfaces, PersistFile as well as 
BonoboStream. 

But I am not convinced relying on BonoboStream solely is a good idea for a
generic shell.  Often it is useful for a view not only accessing the raw
data, but also have access to the complete URI and do all the
loading/saving itself. For example, if you have to distinguish between
remote and local files for speed or security issues. Or the view doesn't
load a single file but a whole directory. Then you have to deal with a
Bonobo::Storage interface, which is IMHO a pain to deal with (compared to
gnome-vfs).

> 
> 	<oaf_attribute type="stringv" name="bonobo:supported_mime_types">
> 	    <item value="MIME-TYPE"/>
> 	</oaf_attribute>

This can also be done on the bonobo_activation_query level and is not 
bound to the use of monikers.

Regards,

  Jens