elementary: enforce Efl.IoModel as a base type for fileselector.

On the long run, we might just want to have an Efl.Model dedicated to
be used by fileselector and inherit Efl.IoModel from it. At the moment,
we don't, but I think it is still best to rely on this assumption to
make the fileselector code simpler.

Reviewed-by: Marcel Hollerbach <mail@marcel-hollerbach.de>
Differential Revision: https://phab.enlightenment.org/D8654

src/lib/elementary/elc_fileselector.c

@@ -2115,6 +2115,8 @@ _elm_fileselector_path_set_internal(Evas_Object *obj, const char *_path)
 EOLIAN static void
 _elm_fileselector_efl_ui_view_model_set(Eo *obj, Elm_Fileselector_Data *sd EINA_UNUSED, Efl_Model *model)
 {
+   if (!efl_isa(model, EFL_IO_MODEL_CLASS))
+     return ;
    _populate(obj, model, NULL, NULL);
 }
 

src/lib/elementary/elc_fileselector_button.c

@@ -351,6 +351,9 @@ _elm_fileselector_button_efl_ui_view_model_set(Eo *obj EINA_UNUSED, Elm_Filesele
 {
    char *file = NULL;
 
+   if (!efl_isa(model, EFL_IO_MODEL_CLASS))
+     return ;
+
    efl_replace(&sd->fsd.model, model);
 
    if (model)

src/lib/elementary/elc_fileselector_entry.c

@@ -406,6 +406,8 @@ _elm_fileselector_entry_path_set_internal(Evas_Object *obj, const char *path)
 EOLIAN static void
 _elm_fileselector_entry_efl_ui_view_model_set(Eo *obj EINA_UNUSED, Elm_Fileselector_Entry_Data *sd, Efl_Model *model)
 {
+   if (!efl_isa(model, EFL_IO_MODEL_CLASS))
+     return ;
    efl_ui_view_model_set(sd->button, model);
    efl_ui_view_model_set(sd->entry, model);
    efl_ui_property_bind(sd->entry, "default", "path");