columnview: Simplify column constructors

Drop gtk_column_view_column_new_with_factory and
just make gtk_column_view_column_new accept a
nullable factory. This follows what we've been
doing elsewhere.

Update all callers.

docs/reference/gtk/gtk4-sections.txt

@@ -555,7 +555,6 @@ gtk_column_view_get_type
 <TITLE>GtkColumnViewColumn</TITLE>
 GtkColumnViewColumn
 gtk_column_view_column_new
-gtk_column_view_column_new_with_factory
 gtk_column_view_column_get_column_view
 gtk_column_view_column_set_factory
 gtk_column_view_column_get_factory

gtk/gtkcolumnviewcolumn.c

@@ -357,25 +357,7 @@ gtk_column_view_column_init (GtkColumnViewColumn *self)
 /**
  * gtk_column_view_column_new:
  * @title: (nullable): Title to use for this column
- *
- * Creates a new #GtkColumnViewColumn.
- *
- * You most likely want to call gtk_column_view_add_column() next.
- *
- * Returns: a new #GtkColumnViewColumn
- **/
-GtkColumnViewColumn *
-gtk_column_view_column_new (const char *title)
-{
-  return g_object_new (GTK_TYPE_COLUMN_VIEW_COLUMN,
-                       "title", title,
-                       NULL);
-}
-
-/**
- * gtk_column_view_column_new_with_factory:
- * @title: (nullable): Title to use for this column
- * @factory: (transfer full): The factory to populate items with
+ * @factory: (transfer full) (nullable): The factory to populate items with
  *
  * Creates a new #GtkColumnViewColumn that uses the given @factory for
  * mapping items to widgets.
@@ -385,15 +367,15 @@ gtk_column_view_column_new (const char *title)
  * The function takes ownership of the
  * argument, so you can write code like
  * ```
- *   column = gtk_column_view_column_new_with_factory (_("Name"),
+ *   column = gtk_column_view_column_new (_("Name"),
  *     gtk_builder_list_item_factory_new_from_resource ("/name.ui"));
  * ```
  *
  * Returns: a new #GtkColumnViewColumn using the given @factory
  **/
 GtkColumnViewColumn *
-gtk_column_view_column_new_with_factory (const char         *title,
-                                         GtkListItemFactory *factory)
+gtk_column_view_column_new (const char         *title,
+                            GtkListItemFactory *factory)
 {
   GtkColumnViewColumn *result;
 
@@ -404,7 +386,7 @@ gtk_column_view_column_new_with_factory (const char         *title,
                          "title", title,
                          NULL);
 
-  g_object_unref (factory);
+  g_clear_object (&factory);
 
   return result;
 }

gtk/gtkcolumnviewcolumn.h

@@ -47,9 +47,7 @@ GDK_AVAILABLE_IN_ALL
 GType                   gtk_column_view_column_get_type                 (void) G_GNUC_CONST;
 
 GDK_AVAILABLE_IN_ALL
-GtkColumnViewColumn *   gtk_column_view_column_new                      (const char             *title);
-GDK_AVAILABLE_IN_ALL
-GtkColumnViewColumn *   gtk_column_view_column_new_with_factory         (const char             *title,
+GtkColumnViewColumn *   gtk_column_view_column_new                      (const char             *title,
                                                                          GtkListItemFactory     *factory);
 
 GDK_AVAILABLE_IN_ALL

tests/testcolumnview.c

@@ -662,7 +662,7 @@ add_extra_columns (GtkColumnView   *view,
   for (i = 0; i < G_N_ELEMENTS(extra_columns); i++)
     {
       bytes = g_bytes_new_static (extra_columns[i].factory_xml, strlen (extra_columns[i].factory_xml));
-      column = gtk_column_view_column_new_with_factory (extra_columns[i].title,
+      column = gtk_column_view_column_new (extra_columns[i].title,
           gtk_builder_list_item_factory_new_from_bytes (scope, bytes));
       g_bytes_unref (bytes);
       sorter = GTK_SORTER (gtk_custom_sorter_new (compare_file_attribute, (gpointer) extra_columns[i].attribute, NULL));

tests/testlistdnd.c

@@ -388,7 +388,7 @@ main (int argc, char *argv[])
       g_signal_connect (factory, "unbind", G_CALLBACK (unbind_item), NULL);
 
       title = g_strdup_printf ("Column %u", i);
-      column = gtk_column_view_column_new_with_factory (title, factory);
+      column = gtk_column_view_column_new (title, factory);
       gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
       g_object_unref (column);
       g_free (title);