[gnome-photos/wip/rishi/collection: 7/28] Support skipping some children while generating the "all" filter

[Debarshi Ray <debarshir src gnome org>]

commit a2c6f2c2c7d47b3f3666c1bebebbb296f17cf682
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Jan 21 19:37:19 2018 +0100

    Support skipping some children while generating the "all" filter
    
    A subsequent commit will add support for GMount-backed sources to
    represent attached devices. These sources shouldn't contribute to the
    SourceManager's "all" filter. This demands finer control over the
    filter generation process.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=751212

 src/photos-base-manager.c         | 5 ++++-
 src/photos-base-manager.h         | 5 ++++-
 src/photos-search-match-manager.c | 2 +-
 src/photos-source-manager.c       | 2 +-
 4 files changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/src/photos-base-manager.c b/src/photos-base-manager.c
index f437681f..2f8f9e39 100644
--- a/src/photos-base-manager.c
+++ b/src/photos-base-manager.c
@@ -596,7 +596,7 @@ photos_base_manager_get_active_object (PhotosBaseManager *self)
 
 
 gchar *
-photos_base_manager_get_all_filter (PhotosBaseManager *self)
+photos_base_manager_get_all_filter (PhotosBaseManager *self, PhotosBaseManagerGetAllFilterCallback callback)
 {
   PhotosBaseManagerPrivate *priv;
   GHashTableIter iter;
@@ -625,6 +625,9 @@ photos_base_manager_get_all_filter (PhotosBaseManager *self)
       if (g_strcmp0 (id, "all") == 0)
         continue;
 
+      if (callback != NULL && !(*callback) (object_data->object))
+        continue;
+
       str = photos_filterable_get_filter (PHOTOS_FILTERABLE (object_data->object));
       if (g_strcmp0 (str, blank) == 0)
         g_free (str);
diff --git a/src/photos-base-manager.h b/src/photos-base-manager.h
index 1a673661..3a4d7814 100644
--- a/src/photos-base-manager.h
+++ b/src/photos-base-manager.h
@@ -54,6 +54,8 @@ struct _PhotosBaseManagerClass
   void           (*object_removed)         (PhotosBaseManager *self, GObject *object);
 };
 
+typedef gboolean (*PhotosBaseManagerGetAllFilterCallback) (GObject *);
+
 PhotosBaseManager  *photos_base_manager_new                      (GCompareDataFunc sort_func, gpointer 
sort_data);
 
 void                photos_base_manager_add_object               (PhotosBaseManager *self, GObject *object);
@@ -64,7 +66,8 @@ const gchar        *photos_base_manager_get_action_id            (PhotosBaseMana
 
 GObject            *photos_base_manager_get_active_object        (PhotosBaseManager *self);
 
-gchar              *photos_base_manager_get_all_filter           (PhotosBaseManager *self);
+gchar              *photos_base_manager_get_all_filter           (PhotosBaseManager *self,
+                                                                  PhotosBaseManagerGetAllFilterCallback 
callback);
 
 gchar              *photos_base_manager_get_filter               (PhotosBaseManager *self, gint flags);
 
diff --git a/src/photos-search-match-manager.c b/src/photos-search-match-manager.c
index 97b3be3f..5c048ab7 100644
--- a/src/photos-search-match-manager.c
+++ b/src/photos-search-match-manager.c
@@ -89,7 +89,7 @@ photos_search_match_manager_get_filter (PhotosBaseManager *mngr, gint flags)
       search_match = PHOTOS_SEARCH_MATCH (photos_base_manager_get_active_object (PHOTOS_BASE_MANAGER 
(self)));
       id = photos_filterable_get_id (PHOTOS_FILTERABLE (search_match));
       if (g_strcmp0 (id, PHOTOS_SEARCH_MATCH_STOCK_ALL) == 0)
-        filter = photos_base_manager_get_all_filter (PHOTOS_BASE_MANAGER (self));
+        filter = photos_base_manager_get_all_filter (PHOTOS_BASE_MANAGER (self), NULL);
       else
         filter = photos_filterable_get_filter (PHOTOS_FILTERABLE (search_match));
 
diff --git a/src/photos-source-manager.c b/src/photos-source-manager.c
index 9d76b625..14f4fc4d 100644
--- a/src/photos-source-manager.c
+++ b/src/photos-source-manager.c
@@ -78,7 +78,7 @@ photos_source_manager_get_filter (PhotosBaseManager *mngr, gint flags)
 
   id = photos_filterable_get_id (PHOTOS_FILTERABLE (source));
   if (g_strcmp0 (id, PHOTOS_SOURCE_STOCK_ALL) == 0)
-    filter = photos_base_manager_get_all_filter (mngr);
+    filter = photos_base_manager_get_all_filter (mngr, NULL);
   else
     filter = photos_filterable_get_filter (PHOTOS_FILTERABLE (source));