[evolution] Add e_source_selector_ref_source_by_iter().

[Matthew Barnes <mbarnes src gnome org>]

commit f8ff0f0fde14b3f80663d74ac6a5f7f83d12b0ec
Author: Matthew Barnes <mbarnes redhat com>
Date:   Wed Feb 20 12:36:46 2013 -0500

    Add e_source_selector_ref_source_by_iter().

 doc/reference/libeutil/libeutil-sections.txt |    1 +
 e-util/e-source-selector.c                   |   31 ++++++++++++++++++++++++++
 e-util/e-source-selector.h                   |    3 ++
 3 files changed, 35 insertions(+), 0 deletions(-)
---
diff --git a/doc/reference/libeutil/libeutil-sections.txt b/doc/reference/libeutil/libeutil-sections.txt
index 78e3b72..f4eee6f 100644
--- a/doc/reference/libeutil/libeutil-sections.txt
+++ b/doc/reference/libeutil/libeutil-sections.txt
@@ -3113,6 +3113,7 @@ e_source_selector_set_select_new
 e_source_selector_edit_primary_selection
 e_source_selector_ref_primary_selection
 e_source_selector_set_primary_selection
+e_source_selector_ref_source_by_iter
 e_source_selector_ref_source_by_path
 e_source_selector_queue_write
 e_source_selector_update_row
diff --git a/e-util/e-source-selector.c b/e-util/e-source-selector.c
index b746230..15f7781 100644
--- a/e-util/e-source-selector.c
+++ b/e-util/e-source-selector.c
@@ -1911,6 +1911,37 @@ e_source_selector_set_primary_selection (ESourceSelector *selector,
 }
 
 /**
+ * e_source_selector_ref_source_by_iter:
+ * @selector: an #ESourceSelector
+ * @iter: a #GtkTreeIter
+ *
+ * Returns the #ESource object at @iter.
+ *
+ * The returned #ESource is referenced for thread-safety and must be
+ * unreferenced with g_object_unref() when finished with it.
+ *
+ * Returns: the #ESource object at @iter, or %NULL
+ *
+ * Since: 3.8
+ **/
+ESource *
+e_source_selector_ref_source_by_iter (ESourceSelector *selector,
+                                      GtkTreeIter *iter)
+{
+       ESource *source = NULL;
+       GtkTreeModel *model;
+
+       g_return_val_if_fail (E_IS_SOURCE_SELECTOR (selector), NULL);
+       g_return_val_if_fail (iter != NULL, NULL);
+
+       model = gtk_tree_view_get_model (GTK_TREE_VIEW (selector));
+
+       gtk_tree_model_get (model, iter, COLUMN_SOURCE, &source, -1);
+
+       return source;
+}
+
+/**
  * e_source_selector_ref_source_by_path:
  * @selector: an #ESourceSelector
  * @path: a #GtkTreePath
diff --git a/e-util/e-source-selector.h b/e-util/e-source-selector.h
index e251421..b49d65a 100644
--- a/e-util/e-source-selector.h
+++ b/e-util/e-source-selector.h
@@ -130,6 +130,9 @@ ESource *   e_source_selector_ref_primary_selection
 void           e_source_selector_set_primary_selection
                                                (ESourceSelector *selector,
                                                 ESource *source);
+ESource *      e_source_selector_ref_source_by_iter
+                                               (ESourceSelector *selector,
+                                                GtkTreeIter *iter);
 ESource *      e_source_selector_ref_source_by_path
                                                (ESourceSelector *selector,
                                                 GtkTreePath *path);