Re: GnomeVFS backend for GtkFileChooser

[Alexander Larsson <alexl redhat com>]

On Thu, 2003-10-30 at 15:04, Havoc Pennington wrote:
> On Thu, 2003-10-30 at 05:34, Jeff Waugh wrote:
> > <quote who="Alexander Larsson">
> > 
> > > > What do people think?  Or does it make better sense to put this into
> > > > libgnomeui [which is getting deprecated too fast for my taste, but...]
> > > 
> > > Can't we put the GtkFileSystem interface in glib or something, then
> > > gnome-vfs can have the implementation without depending on gtk+?
> > 
> > (If that's doable, it would totally rock the casbah.)
> > 
> 
> Why would we do this though, purely to rearrange the jhbuild build
> graph? I don't see any other advantage. It doesn't make sense;
> GtkFileSystem is the plugin API for GtkFileChooser, it has no other
> purpose. So it logically belongs with GtkFileChooser. The
> gnome-vfs-subclass of GtkFileSystem is a runtime drop-in plugin for
> GtkFileChooser that enables gnome-vfs usage, so it logically belongs in
> gnome-vfs or gtk+ as those are the two things it's related to. None of
> this makes sense in GLib, as it's hugely GtkFileChooser-specific.
> 
> Who gives a crap if you have to build gtk+ before gnome-vfs? In fact
> "jhbuild list" shows that gtk+ already builds before gnome-vfs.
> 
> The foo/fooui library splits were done to allow apps to avoid relying on
> an X connection, or linking to all the X/GTK+ libs if they aren't GUI
> apps. But what we're talking about here has nothing to do with that.
> It's simply an issue of the build graph. And there are no requirements
> on the build graph other than "no cycles"

Really? How do you implement an interface without linking to the
library?

In particular, how would you call:
  g_type_add_interface_static (file_system_gnome_vfs_type,
                               GTK_TYPE_FILE_SYSTEM,
                               &file_system_info);

without linking to the library that defines gtk_file_system_get_type().

You can't. So, either:
a) gtk_file_system_get_type() goes in some lib below gtk+
b) gnome-vfs links to gtk+
c) the gnome-vfs implemenation of GtkFileSystem goes in libgnomeui

pick your poison.

Personally, I favour c.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Alexander Larsson                                            Red Hat, Inc 
                   alexl redhat com    alla lysator liu se 
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