[gthumb] selections: added gth_selections_manager_get_is_empty



commit e3fcf5975b650593f6b1cbf67b5c95f8ffc0a3a2
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Jul 14 13:06:51 2013 +0200

    selections: added gth_selections_manager_get_is_empty

 extensions/selections/gth-selections-manager.c |   20 ++++++++++++++++++++
 extensions/selections/gth-selections-manager.h |    1 +
 2 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/extensions/selections/gth-selections-manager.c b/extensions/selections/gth-selections-manager.c
index 3d7186f..01c330b 100644
--- a/extensions/selections/gth-selections-manager.c
+++ b/extensions/selections/gth-selections-manager.c
@@ -536,6 +536,26 @@ gth_selections_manager_file_exists (int    n_selection,
 }
 
 
+gboolean
+gth_selections_manager_get_is_empty (int n_selection)
+{
+       GthSelectionsManager *self;
+       guint                 size;
+
+       if ((n_selection <= 0) || (n_selection > GTH_SELECTIONS_MANAGER_N_SELECTIONS))
+               return TRUE;
+
+       self = gth_selections_manager_get_default ();
+       g_mutex_lock (&self->priv->mutex);
+
+       size = g_hash_table_size (self->priv->files_hash[n_selection - 1]);
+
+       g_mutex_unlock (&self->priv->mutex);
+
+       return size == 0;
+}
+
+
 int
 _g_file_get_n_selection (GFile *file)
 {
diff --git a/extensions/selections/gth-selections-manager.h b/extensions/selections/gth-selections-manager.h
index 92058b0..b4a02b9 100644
--- a/extensions/selections/gth-selections-manager.h
+++ b/extensions/selections/gth-selections-manager.h
@@ -74,6 +74,7 @@ void     gth_selections_manager_update_file_info (GFile                *file,
                                                  GFileInfo            *info);
 gboolean gth_selections_manager_file_exists      (int                   n_selection,
                                                  GFile                *file);
+gboolean gth_selections_manager_get_is_empty     (int                   n_selection);
 
 /* utilities */
 


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