[gnome-photos] base-manager: Implement process_new_objects

[Debarshi Ray <debarshir src gnome org>]

commit e604ce657cd02c5bac183ebee0ac28f73148079c
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Dec 8 02:15:59 2013 +0100

    base-manager: Implement process_new_objects

 src/photos-base-manager.c |   42 +++++++++++++++++++++++++++++++++++++++++-
 src/photos-base-manager.h |    2 ++
 src/photos-source.c       |    6 +++++-
 3 files changed, 48 insertions(+), 2 deletions(-)
---
diff --git a/src/photos-base-manager.c b/src/photos-base-manager.c
index 4fbceac..fd6fd49 100644
--- a/src/photos-base-manager.c
+++ b/src/photos-base-manager.c
@@ -1,6 +1,6 @@
 /*
  * Photos - access, organize and share your photos on GNOME
- * Copyright © 2012 Red Hat, Inc.
+ * Copyright © 2012, 2013 Red Hat, Inc.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -287,6 +287,46 @@ photos_base_manager_get_objects_count (PhotosBaseManager *self)
 
 
 void
+photos_base_manager_process_new_objects (PhotosBaseManager *self, GHashTable *new_objects)
+{
+  GHashTable *old_objects;
+  GHashTableIter iter;
+  GObject *object;
+  const gchar *id;
+
+  old_objects = photos_base_manager_get_objects (self);
+
+  g_hash_table_iter_init (&iter, old_objects);
+  while (g_hash_table_iter_next (&iter, (gpointer *) &id, (gpointer *) &object))
+    {
+      gboolean builtin;
+
+      /* If old objects are not found in the newer hash table, remove
+       * them.
+       */
+      g_object_get (object, "builtin", &builtin, NULL);
+      if (g_hash_table_lookup (new_objects, id) == NULL && !builtin)
+        {
+          g_signal_emit (self, signals[OBJECT_REMOVED], 0, object);
+          g_hash_table_iter_remove (&iter);
+        }
+    }
+
+  g_hash_table_iter_init (&iter, new_objects);
+  while (g_hash_table_iter_next (&iter, (gpointer *) &id, (gpointer *) &object))
+    {
+      /* If new items are not found in the older hash table, add
+       * them.
+       */
+      if (g_hash_table_lookup (old_objects, id) == NULL)
+        photos_base_manager_add_object (self, object);
+    }
+
+  /* TODO: merge existing item properties with new values. */
+}
+
+
+void
 photos_base_manager_remove_object (PhotosBaseManager *self, GObject *object)
 {
   gchar *id;
diff --git a/src/photos-base-manager.h b/src/photos-base-manager.h
index d833929..0f239ff 100644
--- a/src/photos-base-manager.h
+++ b/src/photos-base-manager.h
@@ -91,6 +91,8 @@ GHashTable         *photos_base_manager_get_objects              (PhotosBaseMana
 
 guint               photos_base_manager_get_objects_count        (PhotosBaseManager *self);
 
+void                photos_base_manager_process_new_objects      (PhotosBaseManager *self, GHashTable 
*new_objects);
+
 void                photos_base_manager_remove_object            (PhotosBaseManager *self, GObject *object);
 
 void                photos_base_manager_remove_object_by_id      (PhotosBaseManager *self, const gchar *id);
diff --git a/src/photos-source.c b/src/photos-source.c
index 34406d3..4d0d251 100644
--- a/src/photos-source.c
+++ b/src/photos-source.c
@@ -123,6 +123,10 @@ photos_source_get_property (GObject *object, guint prop_id, GValue *value, GPara
 
   switch (prop_id)
     {
+    case PROP_BUILTIN:
+      g_value_set_boolean (value, priv->builtin);
+      break;
+
     case PROP_ID:
       g_value_set_string (value, priv->id);
       break;
@@ -213,7 +217,7 @@ photos_source_class_init (PhotosSourceClass *class)
                                                          "",
                                                          "",
                                                          FALSE,
-                                                         G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
+                                                         G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE));
 
   g_object_class_install_property (object_class,
                                    PROP_ID,