[gnome-photos/wip/rishi/manager-model: 8/8] base-manager: Implement GListModel

[Debarshi Ray <debarshir src gnome org>]

commit 8ac5e1c673440e88394554e5d303eff41f2e25af
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Oct 13 07:13:52 2016 +0200

    base-manager: Implement GListModel

 src/photos-base-manager.c |   88 ++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 84 insertions(+), 4 deletions(-)
---
diff --git a/src/photos-base-manager.c b/src/photos-base-manager.c
index 26d89b3..59aa88d 100644
--- a/src/photos-base-manager.c
+++ b/src/photos-base-manager.c
@@ -25,6 +25,7 @@
 
 #include "config.h"
 
+#include <gio/gio.h>
 #include <glib.h>
 
 #include "photos-base-manager.h"
@@ -35,6 +36,7 @@ struct _PhotosBaseManagerPrivate
 {
   GHashTable *objects;
   GObject *active_object;
+  GSequence *sequence;
   gchar *action_id;
   gchar *title;
 };
@@ -57,8 +59,41 @@ enum
 
 static guint signals[LAST_SIGNAL] = { 0 };
 
+static void photos_base_manager_list_model_iface_init (GListModelInterface *iface);
 
-G_DEFINE_TYPE_WITH_PRIVATE (PhotosBaseManager, photos_base_manager, G_TYPE_OBJECT);
+
+G_DEFINE_TYPE_WITH_CODE (PhotosBaseManager, photos_base_manager, G_TYPE_OBJECT,
+                         G_ADD_PRIVATE (PhotosBaseManager)
+                         G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, 
photos_base_manager_list_model_iface_init));
+
+
+typedef struct _PhotosBaseManagerObjectData PhotosBaseManagerObjectData;
+
+struct _PhotosBaseManagerObjectData
+{
+  GObject *object;
+  GSequenceIter *iter;
+};
+
+
+static PhotosBaseManagerObjectData *
+photos_base_manager_object_data_new (GObject *object, GSequenceIter *iter)
+{
+  PhotosBaseManagerObjectData *object_data;
+
+  object_data = g_slice_new0 (PhotosBaseManagerObjectData);
+  object_data->object = g_object_ref (object);
+  object_data->iter = iter;
+  return object_data;
+}
+
+
+static void
+photos_base_manager_object_data_free (PhotosBaseManagerObjectData *object_data)
+{
+  g_object_unref (object_data->object);
+  g_slice_free (PhotosBaseManagerObjectData, object_data);
+}
 
 
 static void
@@ -66,6 +101,7 @@ photos_base_manager_default_add_object (PhotosBaseManager *self, GObject *object
 {
   PhotosBaseManagerPrivate *priv;
   GObject *old_object;
+  GSequenceIter *iter;
   const gchar *id;
 
   priv = photos_base_manager_get_instance_private (self);
@@ -75,7 +111,10 @@ photos_base_manager_default_add_object (PhotosBaseManager *self, GObject *object
   if (old_object != NULL)
     return;
 
-  g_hash_table_insert (priv->objects, g_strdup (id), g_object_ref (object));
+  iter = g_sequence_append (priv->sequence, g_object_ref (object));
+  object_data = photos_base_manager_object_data_new (object, iter);
+  g_hash_table_insert (priv->objects, g_strdup (id), object_data);
+
   g_signal_emit (self, signals[OBJECT_ADDED], 0, object);
 }
 
@@ -102,13 +141,15 @@ photos_base_manager_default_get_object_by_id (PhotosBaseManager *self, const gch
 {
   PhotosBaseManagerPrivate *priv;
   GObject *ret_val = NULL;
+  PhotosBaseManagerObjectData *object_data;
 
   priv = photos_base_manager_get_instance_private (self);
 
   if (id == NULL)
     goto out;
 
-  ret_val = g_hash_table_lookup (priv->objects, id);
+  object_data = g_hash_table_lookup (priv->objects, id);
+  ret_val = object_data->object;
 
  out:
   return ret_val;
@@ -166,6 +207,31 @@ photos_base_manager_default_set_active_object (PhotosBaseManager *self, GObject
 }
 
 
+static gpointer
+photos_base_manager_get_item (GListModel *list, guint position)
+{
+  return NULL;
+}
+
+
+static GType
+photos_base_manager_get_item_type (GListModel *list)
+{
+  return PHOTOS_TYPE_FILTERABLE;
+}
+
+
+static guint
+photos_base_manager_get_n_items (GListModel *list)
+{
+  PhotosBaseManager *self = PHOTOS_BASE_MANAGER (list);
+  guint count;
+
+  count = photos_base_manager_get_objects_count (self);
+  return count;
+}
+
+
 static void
 photos_base_manager_dispose (GObject *object)
 {
@@ -181,6 +247,7 @@ photos_base_manager_dispose (GObject *object)
     }
 
   g_clear_object (&priv->active_object);
+  g_clear_pointer (&priv->sequence, (GDestroyNotify) g_sequence_free);
 
   G_OBJECT_CLASS (photos_base_manager_parent_class)->dispose (object);
 }
@@ -232,7 +299,11 @@ photos_base_manager_init (PhotosBaseManager *self)
   PhotosBaseManagerPrivate *priv;
 
   priv = photos_base_manager_get_instance_private (self);
-  priv->objects = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
+  priv->objects = g_hash_table_new_full (g_str_hash,
+                                         g_str_equal,
+                                         g_free,
+                                         (GDestroyNotify) photos_base_manager_object_data_free);
+  priv->sequence = g_sequence_new (g_object_unref);
 }
 
 
@@ -314,6 +385,15 @@ photos_base_manager_class_init (PhotosBaseManagerClass *class)
 }
 
 
+static void
+photos_base_manager_list_model_iface_init (GListModelInterface *iface)
+{
+  iface->get_item = photos_base_manager_get_item;
+  iface->get_item_type = photos_base_manager_get_item_type;
+  iface->get_n_items = photos_base_manager_get_n_items;
+}
+
+
 PhotosBaseManager *
 photos_base_manager_new (void)
 {