[pango/pango2: 74/195] Drop redundant enumeration api

[Matthias Clasen <matthiasc src gnome org>]

commit f6c2982017a1da334273d34b4eec19c6cae255e2
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 12 14:22:13 2022 -0500

    Drop redundant enumeration api
    
    We have list models now.

 pango/pango-font-family-private.h |  3 --
 pango/pango-font-family.c         | 94 +++++----------------------------------
 pango/pango-font-family.h         |  4 --
 pango/pango-fontmap.c             | 68 ++++------------------------
 pango/pango-fontmap.h             | 16 +++----
 pango/pangofc-fontmap.c           | 57 ------------------------
 6 files changed, 27 insertions(+), 215 deletions(-)
---
diff --git a/pango/pango-font-family-private.h b/pango/pango-font-family-private.h
index 42ccdb9e..81fc41f4 100644
--- a/pango/pango-font-family-private.h
+++ b/pango/pango-font-family-private.h
@@ -35,9 +35,6 @@ struct _PangoFontFamilyClass
 
   /*< public >*/
 
-  void  (*list_faces)      (PangoFontFamily  *family,
-                            PangoFontFace  ***faces,
-                            int              *n_faces);
   const char * (*get_name) (PangoFontFamily  *family);
   gboolean (*is_monospace) (PangoFontFamily *family);
   gboolean (*is_variable)  (PangoFontFamily *family);
diff --git a/pango/pango-font-family.c b/pango/pango-font-family.c
index e77efa2d..072cc1af 100644
--- a/pango/pango-font-family.c
+++ b/pango/pango-font-family.c
@@ -34,33 +34,16 @@ pango_font_family_get_item_type (GListModel *list)
 static guint
 pango_font_family_get_n_items (GListModel *list)
 {
-  PangoFontFamily *family = PANGO_FONT_FAMILY (list);
-  int n_faces;
-
-  pango_font_family_list_faces (family, NULL, &n_faces);
-
-  return (guint)n_faces;
+  g_assert_not_reached ();
+  return 0;
 }
 
 static gpointer
 pango_font_family_get_item (GListModel *list,
                             guint       position)
 {
-  PangoFontFamily *family = PANGO_FONT_FAMILY (list);
-  PangoFontFace **faces;
-  int n_faces;
-  PangoFontFace *face;
-
-  pango_font_family_list_faces (family, &faces, &n_faces);
-
-  if (position < n_faces)
-    face = g_object_ref (faces[position]);
-  else
-    face = NULL;
-
-  g_free (faces);
-
-  return face;
+  g_assert_not_reached ();
+  return NULL;
 }
 
 static void
@@ -89,25 +72,12 @@ pango_font_family_default_is_variable (PangoFontFamily *family)
   return FALSE;
 }
 
-static void
-pango_font_family_default_list_faces (PangoFontFamily   *family,
-                                      PangoFontFace   ***faces,
-                                      int               *n_faces)
-{
-  if (faces)
-    *faces = NULL;
-
-  if (n_faces)
-    *n_faces = 0;
-}
-
 static void
 pango_font_family_class_init (PangoFontFamilyClass *class G_GNUC_UNUSED)
 {
   class->is_monospace = pango_font_family_default_is_monospace;
   class->is_variable = pango_font_family_default_is_variable;
   class->get_face = pango_font_family_real_get_face;
-  class->list_faces = pango_font_family_default_list_faces;
 }
 
 static void
@@ -136,66 +106,26 @@ pango_font_family_get_name (PangoFontFamily  *family)
   return PANGO_FONT_FAMILY_GET_CLASS (family)->get_name (family);
 }
 
-/**
- * pango_font_family_list_faces:
- * @family: a `PangoFontFamily`
- * @faces: (out) (optional) (array length=n_faces) (transfer container):
- *   location to store an array of pointers to `PangoFontFace` objects,
- *   or %NULL. This array should be freed with g_free() when it is no
- *   longer needed.
- * @n_faces: (out): location to store number of elements in @faces.
- *
- * Lists the different font faces that make up @family.
- *
- * The faces in a family share a common design, but differ in slant, weight,
- * width and other aspects.
- *
- * Note that the returned faces are not in any particular order, and
- * multiple faces may have the same name or characteristics.
- *
- * `PangoFontFamily` also implemented the [iface@Gio.ListModel] interface
- * for enumerating faces.
- */
-void
-pango_font_family_list_faces (PangoFontFamily  *family,
-                              PangoFontFace  ***faces,
-                              int              *n_faces)
-{
-  g_return_if_fail (PANGO_IS_FONT_FAMILY (family));
-
-  PANGO_FONT_FAMILY_GET_CLASS (family)->list_faces (family, faces, n_faces);
-}
-
 static PangoFontFace *
 pango_font_family_real_get_face (PangoFontFamily *family,
                                  const char      *name)
 {
-  PangoFontFace **faces;
-  int n_faces;
   PangoFontFace *face;
-  int i;
-
-  pango_font_family_list_faces (family, &faces, &n_faces);
 
   face = NULL;
-  if (name == NULL && n_faces > 0)
-    {
-      face = faces[0];
-    }
-  else
+
+  for (int i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (family)); i++)
     {
-      for (i = 0; i < n_faces; i++)
+      PangoFontFace *f = g_list_model_get_item (G_LIST_MODEL (family), i);
+      g_object_unref (f);
+      if (name == NULL ||
+          strcmp (name, pango_font_face_get_face_name (f)) == 0)
         {
-          if (strcmp (name, pango_font_face_get_face_name (faces[i])) == 0)
-            {
-              face = faces[i];
-              break;
-            }
+          face = f;
+          break;
         }
     }
 
-  g_free (faces);
-
   return face;
 }
 
diff --git a/pango/pango-font-family.h b/pango/pango-font-family.h
index 5a605a22..927352eb 100644
--- a/pango/pango-font-family.h
+++ b/pango/pango-font-family.h
@@ -32,10 +32,6 @@ G_BEGIN_DECLS
 PANGO_AVAILABLE_IN_ALL
 PANGO_DECLARE_INTERNAL_TYPE (PangoFontFamily, pango_font_family, PANGO, FONT_FAMILY, GObject)
 
-PANGO_AVAILABLE_IN_ALL
-void                    pango_font_family_list_faces    (PangoFontFamily  *family,
-                                                         PangoFontFace  ***faces,
-                                                         int              *n_faces);
 PANGO_AVAILABLE_IN_ALL
 const char *            pango_font_family_get_name      (PangoFontFamily  *family) G_GNUC_PURE;
 PANGO_AVAILABLE_IN_1_4
diff --git a/pango/pango-fontmap.c b/pango/pango-fontmap.c
index 2cb1b175..fa7cfdc8 100644
--- a/pango/pango-fontmap.c
+++ b/pango/pango-fontmap.c
@@ -115,35 +115,6 @@ pango_font_map_load_font  (PangoFontMap               *fontmap,
   return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_font (fontmap, context, desc);
 }
 
-/**
- * pango_font_map_list_families:
- * @fontmap: a `PangoFontMap`
- * @families: (out) (array length=n_families) (transfer container): location to
- *   store a pointer to an array of `PangoFontFamily` *.
- *   This array should be freed with g_free().
- * @n_families: (out): location to store the number of elements in @families
- *
- * List all families for a fontmap.
- *
- * Note that the returned families are not in any particular order.
- *
- * `PangoFontMap` also implemented the [iface@Gio.ListModel] interface
- * for enumerating families.
- */
-void
-pango_font_map_list_families (PangoFontMap      *fontmap,
-                              PangoFontFamily ***families,
-                              int               *n_families)
-{
-  PangoFontMapPrivate *priv = pango_font_map_get_instance_private (fontmap);
-  g_return_if_fail (fontmap != NULL);
-
-  PANGO_FONT_MAP_GET_CLASS (fontmap)->list_families (fontmap, families, n_families);
-
-  /* keep this value for GListModel::changed */
-  priv->n_families = *n_families;
-}
-
 /**
  * pango_font_map_load_fontset:
  * @fontmap: a `PangoFontMap`
@@ -363,26 +334,22 @@ static PangoFontFamily *
 pango_font_map_real_get_family (PangoFontMap *fontmap,
                                 const char   *name)
 {
-  PangoFontFamily **families;
-  int n_families;
   PangoFontFamily *family;
   int i;
 
-  pango_font_map_list_families (fontmap, &families, &n_families);
-
   family = NULL;
 
-  for (i = 0; i < n_families; i++)
+  for (i = 0; i < g_list_model_get_n_items (G_LIST_MODEL (fontmap)); i++)
     {
-      if (strcmp (name, pango_font_family_get_name (families[i])) == 0)
+      PangoFontFamily *fam = g_list_model_get_item (G_LIST_MODEL (fontmap), i);
+      g_object_unref (fam);
+      if (strcmp (name, pango_font_family_get_name (fam)) == 0)
         {
-          family = families[i];
+          family = fam;
           break;
         }
     }
 
-  g_free (families);
-
   return family;
 }
 
@@ -415,33 +382,16 @@ pango_font_map_get_item_type (GListModel *list)
 static guint
 pango_font_map_get_n_items (GListModel *list)
 {
-  PangoFontMap *fontmap = PANGO_FONT_MAP (list);
-  int n_families;
-
-  pango_font_map_list_families (fontmap, NULL, &n_families);
-
-  return (guint)n_families;
+  g_assert_not_reached ();
+  return 0;
 }
 
 static gpointer
 pango_font_map_get_item (GListModel *list,
                          guint       position)
 {
-  PangoFontMap *fontmap = PANGO_FONT_MAP (list);
-  PangoFontFamily **families;
-  int n_families;
-  PangoFontFamily *family;
-
-  pango_font_map_list_families (fontmap, &families, &n_families);
-
-  if (position < n_families)
-    family = g_object_ref (families[position]);
-  else
-    family = NULL;
-
-  g_free (families);
-  
-  return family;
+  g_assert_not_reached ();
+  return NULL;
 }
 
 static void
diff --git a/pango/pango-fontmap.h b/pango/pango-fontmap.h
index 0c0cb817..d9c0ac25 100644
--- a/pango/pango-fontmap.h
+++ b/pango/pango-fontmap.h
@@ -10,7 +10,7 @@
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public
@@ -37,17 +37,13 @@ PANGO_AVAILABLE_IN_1_22
 PangoContext * pango_font_map_create_context (PangoFontMap               *fontmap);
 PANGO_AVAILABLE_IN_ALL
 PangoFont *   pango_font_map_load_font     (PangoFontMap                 *fontmap,
-                                           PangoContext                 *context,
-                                           const PangoFontDescription   *desc);
+                                            PangoContext                 *context,
+                                            const PangoFontDescription   *desc);
 PANGO_AVAILABLE_IN_ALL
 PangoFontset *pango_font_map_load_fontset  (PangoFontMap                 *fontmap,
-                                           PangoContext                 *context,
-                                           const PangoFontDescription   *desc,
-                                           PangoLanguage                *language);
-PANGO_AVAILABLE_IN_ALL
-void          pango_font_map_list_families (PangoFontMap                 *fontmap,
-                                           PangoFontFamily            ***families,
-                                           int                          *n_families);
+                                            PangoContext                 *context,
+                                            const PangoFontDescription   *desc,
+                                            PangoLanguage                *language);
 PANGO_AVAILABLE_IN_1_32
 guint         pango_font_map_get_serial    (PangoFontMap                 *fontmap);
 PANGO_AVAILABLE_IN_1_34
diff --git a/pango/pangofc-fontmap.c b/pango/pangofc-fontmap.c
index ba1e81f5..8904c362 100644
--- a/pango/pangofc-fontmap.c
+++ b/pango/pangofc-fontmap.c
@@ -234,9 +234,6 @@ static PangoFontset *pango_fc_font_map_load_fontset  (PangoFontMap
                                                       PangoContext                 *context,
                                                       const PangoFontDescription   *desc,
                                                       PangoLanguage                *language);
-static void          pango_fc_font_map_list_families (PangoFontMap                 *fontmap,
-                                                      PangoFontFamily            ***families,
-                                                      int                          *n_families);
 static PangoFontFamily *pango_fc_font_map_get_family (PangoFontMap *fontmap,
                                                       const char   *name);
 
@@ -1494,7 +1491,6 @@ pango_fc_font_map_class_init (PangoFcFontMapClass *class)
   object_class->finalize = pango_fc_font_map_finalize;
   fontmap_class->load_font = pango_fc_font_map_load_font;
   fontmap_class->load_fontset = pango_fc_font_map_load_fontset;
-  fontmap_class->list_families = pango_fc_font_map_list_families;
   fontmap_class->get_family = pango_fc_font_map_get_family;
   fontmap_class->get_face = pango_fc_font_map_get_face;
   fontmap_class->changed = pango_fc_font_map_changed;
@@ -1748,33 +1744,6 @@ ensure_families (PangoFcFontMap *fcfontmap)
     }
 }
 
-static void
-pango_fc_font_map_list_families (PangoFontMap      *fontmap,
-                                PangoFontFamily ***families,
-                                int               *n_families)
-{
-  PangoFcFontMap *fcfontmap = PANGO_FC_FONT_MAP (fontmap);
-  PangoFcFontMapPrivate *priv = fcfontmap->priv;
-
-  if (priv->closed)
-    {
-      if (families)
-       *families = NULL;
-      if (n_families)
-       *n_families = 0;
-
-      return;
-    }
-
-  ensure_families (fcfontmap);
-
-  if (n_families)
-    *n_families = priv->n_families;
-
-  if (families)
-    *families = g_memdup2 (priv->families, priv->n_families * sizeof (PangoFontFamily *));
-}
-
 static PangoFontFamily *
 pango_fc_font_map_get_family (PangoFontMap *fontmap,
                               const char   *name)
@@ -3318,31 +3287,6 @@ ensure_faces (PangoFcFamily *fcfamily)
     }
 }
 
-static void
-pango_fc_family_list_faces (PangoFontFamily  *family,
-                           PangoFontFace  ***faces,
-                           int              *n_faces)
-{
-  PangoFcFamily *fcfamily = PANGO_FC_FAMILY (family);
-
-  if (faces)
-    *faces = NULL;
-
-  if (n_faces)
-    *n_faces = 0;
-
-  if (G_UNLIKELY (!fcfamily->fontmap))
-    return;
-
-  ensure_faces (fcfamily);
-
-  if (n_faces)
-    *n_faces = fcfamily->n_faces;
-
-  if (faces)
-    *faces = g_memdup2 (fcfamily->faces, fcfamily->n_faces * sizeof (PangoFontFace *));
-}
-
 static PangoFontFace *
 pango_fc_family_get_face (PangoFontFamily *family,
                           const char      *name)
@@ -3416,7 +3360,6 @@ pango_fc_family_class_init (PangoFcFamilyClass *class)
 
   object_class->finalize = pango_fc_family_finalize;
 
-  class->list_faces = pango_fc_family_list_faces;
   class->get_face = pango_fc_family_get_face;
   class->get_name = pango_fc_family_get_name;
   class->is_monospace = pango_fc_family_is_monospace;