[gtk+] GtkListBox: Fix a bug in unselection

[Matthias Clasen <matthiasc src gnome org>]

commit e6e511eb460d8fcd241f202f9c3e26b0ef288927
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 31 22:34:09 2014 -0400

    GtkListBox: Fix a bug in unselection
    
    Ensure that gtk_list_box_get_selected_row returns NULL after
    gtk_list_box_unselect_all. Add a testcase that detects this
    problem.

 gtk/gtklistbox.c        |    2 ++
 testsuite/gtk/listbox.c |   12 +++++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtklistbox.c b/gtk/gtklistbox.c
index 5b04223..0d42117 100644
--- a/gtk/gtklistbox.c
+++ b/gtk/gtklistbox.c
@@ -1449,6 +1449,8 @@ gtk_list_box_unselect_all_internal (GtkListBox *box)
       dirty |= gtk_list_box_row_set_selected (row, FALSE);
     }
 
+  BOX_PRIV (box)->selected_row = NULL;
+
   return dirty;
 }
 
diff --git a/testsuite/gtk/listbox.c b/testsuite/gtk/listbox.c
index ce1fca8..e868f9a 100644
--- a/testsuite/gtk/listbox.c
+++ b/testsuite/gtk/listbox.c
@@ -137,11 +137,17 @@ test_selection (void)
   g_assert_cmpint (count, ==, 1);
   row2 = gtk_list_box_get_selected_row (list);
   g_assert (row2 == row);
+  gtk_list_box_unselect_all (list);
+  row2 = gtk_list_box_get_selected_row (list);
+  g_assert (row2 == NULL);
+  gtk_list_box_select_row (list, row);
+  row2 = gtk_list_box_get_selected_row (list);
+  g_assert (row2 == row);
 
   gtk_list_box_set_selection_mode (list, GTK_SELECTION_BROWSE);
   gtk_container_remove (GTK_CONTAINER (list), GTK_WIDGET (row));
   g_assert (callback_row == NULL);
-  g_assert_cmpint (count, ==, 2);
+  g_assert_cmpint (count, ==, 4);
   row2 = gtk_list_box_get_selected_row (list);
   g_assert (row2 == NULL);
 
@@ -149,12 +155,12 @@ test_selection (void)
   gtk_list_box_select_row (list, row);
   g_assert (gtk_list_box_row_is_selected (row));
   g_assert (callback_row == row);
-  g_assert_cmpint (count, ==, 3);
+  g_assert_cmpint (count, ==, 5);
 
   gtk_list_box_set_selection_mode (list, GTK_SELECTION_NONE);
   g_assert (!gtk_list_box_row_is_selected (row));
   g_assert (callback_row == NULL);
-  g_assert_cmpint (count, ==, 4);
+  g_assert_cmpint (count, ==, 6);
   row2 = gtk_list_box_get_selected_row (list);
   g_assert (row2 == NULL);