[gtk+] treemodelsort: destroy the root only if we are removing the latest row of the level

[Guillaume Desmottes <gdesmott src gnome org>]

commit c15a7877e9725d104f1d22a9a264048aa044e282
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Thu Apr 25 16:30:12 2013 +0200

    treemodelsort: destroy the root only if we are removing the latest row of the level
    
    GtkIconView doesn't ref the rows of the model so we have to make sure that a
    level is actually empty before destroying it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=698846

 gtk/gtktreemodelsort.c |    2 +-
 gtk/tests/sortmodel.c  |   33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktreemodelsort.c b/gtk/gtktreemodelsort.c
index b2046c2..a3545e9 100644
--- a/gtk/gtktreemodelsort.c
+++ b/gtk/gtktreemodelsort.c
@@ -1061,7 +1061,7 @@ gtk_tree_model_sort_row_deleted (GtkTreeModel *s_model,
     gtk_tree_model_sort_free_level (tree_model_sort,
                                     elt->children, FALSE);
 
-  if (level->ref_count == 0)
+  if (level->ref_count == 0 && g_sequence_get_length (level->seq) == 1)
     {
       gtk_tree_model_sort_increment_stamp (tree_model_sort);
       gtk_tree_model_row_deleted (GTK_TREE_MODEL (data), path);
diff --git a/gtk/tests/sortmodel.c b/gtk/tests/sortmodel.c
index 147db53..a24f8a3 100644
--- a/gtk/tests/sortmodel.c
+++ b/gtk/tests/sortmodel.c
@@ -1171,6 +1171,37 @@ specific_bug_674587 (void)
   g_object_unref (m);
 }
 
+static void
+row_deleted_cb (GtkTreeModel *tree_model,
+    GtkTreePath  *path,
+    guint *count)
+{
+  *count = *count + 1;
+}
+
+static void
+specific_bug_698846 (void)
+{
+  GtkListStore *store;
+  GtkTreeModel *sorted;
+  GtkTreeIter iter;
+  guint count = 0;
+
+  g_test_bug ("698846");
+
+  store = gtk_list_store_new (1, G_TYPE_STRING);
+  sorted = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (store));
+
+  gtk_list_store_insert_with_values (store, &iter, 0, 0, "a", -1);
+  gtk_list_store_insert_with_values (store, &iter, 1, 0, "b", -1);
+
+  g_signal_connect (sorted, "row-deleted", G_CALLBACK (row_deleted_cb), &count);
+
+  gtk_list_store_clear (store);
+
+  g_assert_cmpuint (count, ==, 2);
+}
+
 /* main */
 
 void
@@ -1206,5 +1237,7 @@ register_sort_model_tests (void)
                    specific_bug_364946);
   g_test_add_func ("/TreeModelSort/specific/bug-674587",
                    specific_bug_674587);
+  g_test_add_func ("/TreeModelSort/specific/bug-698846",
+                   specific_bug_698846);
 }