[gnome-photos] tracker-controller: Consolidate the path to submitting a query

[Debarshi Ray <debarshir src gnome org>]

commit e7ec28a755124d73cc52dbe5268e9a2ea45b1402
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Oct 7 19:21:13 2015 +0200

    tracker-controller: Consolidate the path to submitting a query
    
    ... so that it is easier to freeze the TrackerControllers.
    
    We don't want to call photos_tracker_controller_set_query_status when
    reacting to PhotosOffsetController::offset-changed because the
    ViewModels get cleared when the query status is TRUE. Let's handle this
    by introducing a new flag.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741593

 src/photos-tracker-controller.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/src/photos-tracker-controller.c b/src/photos-tracker-controller.c
index c4a4501..a47b59b 100644
--- a/src/photos-tracker-controller.c
+++ b/src/photos-tracker-controller.c
@@ -1,6 +1,6 @@
 /*
  * Photos - access, organize and share your photos on GNOME
- * Copyright © 2012, 2013, 2014 Red Hat, Inc.
+ * Copyright © 2012, 2013, 2014, 2015 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
@@ -84,7 +84,8 @@ G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (PhotosTrackerController, photos_tracker_con
 typedef enum
 {
   PHOTOS_TRACKER_REFRESH_FLAGS_NONE = 0,
-  PHOTOS_TRACKER_REFRESH_FLAGS_RESET_OFFSET = 1 << 0
+  PHOTOS_TRACKER_REFRESH_FLAGS_DONT_SET_QUERY_STATUS = 1 << 0,
+  PHOTOS_TRACKER_REFRESH_FLAGS_RESET_OFFSET = 1 << 1,
 } PhotosTrackerRefreshFlags;
 
 static void photos_tracker_controller_refresh_internal (PhotosTrackerController *self, gint flags);
@@ -206,7 +207,7 @@ photos_tracker_controller_perform_current_query (PhotosTrackerController *self)
 static void
 photos_tracker_controller_offset_changed (PhotosTrackerController *self)
 {
-  photos_tracker_controller_perform_current_query (self);
+  photos_tracker_controller_refresh_internal (self, PHOTOS_TRACKER_REFRESH_FLAGS_DONT_SET_QUERY_STATUS);
 }
 
 
@@ -253,7 +254,9 @@ photos_tracker_controller_refresh_internal (PhotosTrackerController *self, gint
       return;
     }
 
-  photos_tracker_controller_set_query_status (self, TRUE);
+  if (!(flags & PHOTOS_TRACKER_REFRESH_FLAGS_DONT_SET_QUERY_STATUS))
+    photos_tracker_controller_set_query_status (self, TRUE);
+
   photos_tracker_controller_perform_current_query (self);
 }