list widgets: Use selection models in the api

Change the apis in GtkListView, GtkColumnView and
GtkGridView to be explicitly about GtkSelectionModel,
to make it obvious that the widgets handle selection.

Update all users.

1 files changed, 6 insertions, 16 deletions

diff --git a/gtk/gtklistbase.c b/gtk/gtklistbase.c
index efc2ced6db..201bcb0844 100644
--- a/gtk/gtklistbase.c
+++ b/gtk/gtklistbase.c
@@ -56,7 +56,7 @@ typedef struct _GtkListBasePrivate GtkListBasePrivate;
 struct _GtkListBasePrivate
 {
   GtkListItemManager *item_manager;
-  GListModel *model;
+  GtkSelectionModel *model;
   GtkOrientation orientation;
   GtkAdjustment *adjustment[2];
   GtkScrollablePolicy scroll_policy[2];
@@ -469,7 +469,7 @@ gtk_list_base_get_n_items (GtkListBase *self)
   if (priv->model == NULL)
     return 0;
 
-  return g_list_model_get_n_items (priv->model);
+  return g_list_model_get_n_items (G_LIST_MODEL (priv->model));
 }
 
 guint
@@ -2102,7 +2102,7 @@ gtk_list_base_grab_focus_on_item (GtkListBase *self,
   return TRUE;
 }
 
-GListModel *
+GtkSelectionModel *
 gtk_list_base_get_model (GtkListBase *self)
 {
   GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
@@ -2111,8 +2111,8 @@ gtk_list_base_get_model (GtkListBase *self)
 }
 
 gboolean
-gtk_list_base_set_model (GtkListBase *self,
-                         GListModel  *model)
+gtk_list_base_set_model (GtkListBase       *self,
+                         GtkSelectionModel *model)
 {
   GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
 
@@ -2123,19 +2123,9 @@ gtk_list_base_set_model (GtkListBase *self,
 
   if (model)
     {
-      GtkSelectionModel *selection_model;
-
       priv->model = g_object_ref (model);
-
-      if (GTK_IS_SELECTION_MODEL (model))
-        selection_model = GTK_SELECTION_MODEL (g_object_ref (model));
-      else
-        selection_model = GTK_SELECTION_MODEL (gtk_single_selection_new (g_object_ref (model)));
-
-      gtk_list_item_manager_set_model (priv->item_manager, selection_model);
+      gtk_list_item_manager_set_model (priv->item_manager, model);
       gtk_list_base_set_anchor (self, 0, 0.0, GTK_PACK_START, 0.0, GTK_PACK_START);
-
-      g_object_unref (selection_model);
     }
   else
     {