On Saturday 19 April 2008, Dan Pascu wrote:
> > can create two wrappers around the generic dialog callback:
> > - one would be the existing run_dlg_callback (and keep the existing
> > signature), - the other one would be run_mi_callback.
>
> Again, I do not see these just as the same thing. I see them as 2
> different interfaces. The existing one and a new one to move
> information the other way around.
> They may look the same because one will most likely implement this new
> interface using a callback mechanism too, but the distinction of which
> interface moves data in which direction is important IMO.
If I think a bit more of this, the new interface doesn't have to be
callback based. It can just be a simple function each module that wishes
to participate in providing extra MI information would register, and this
function should return a node list. Something like:
// in the module built on top of dialog
struct mi_node*
dialog_mi_helper(struct dlg_cell *dlg, void **param)
{
// build node list
return node_list;
}
...
dlg_api.register_mi_helper(dialog_mi_helper, param);
...
// in the dialog module
...
mi_helper = module_mi_helper_list; // simple linked list
while (mi_helper) {
node_list = mi_helper->function(dlg, mi_helper->param);
// process node_list for displaying it
mi_helper = mi_helper->next;
}
...
--
Dan
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