[gtk+] placesview: hold onto ref during (un)mount ops

[Matthias Clasen <matthiasc src gnome org>]

commit 3ed25941ac80a4630b5c25a420307f9562a59ece
Author: Christian Kellner <christian kellner me>
Date:   Sun Sep 4 11:47:55 2016 +0200

    placesview: hold onto ref during (un)mount ops
    
    During mount and unmount opertions we keep a reference to the
    GtkPlacesView around, so we have a valid view for the callback
    code, even in the case that othe external references have been
    dropped (i.e. the containing window gets destroyed).
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764979

 gtk/gtkplacesview.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkplacesview.c b/gtk/gtkplacesview.c
index 4817c4b..581c4cc 100644
--- a/gtk/gtkplacesview.c
+++ b/gtk/gtkplacesview.c
@@ -1207,6 +1207,7 @@ server_mount_ready_cb (GObject      *source_file,
     }
 
   update_places (view);
+  g_object_unref (view);
 }
 
 static void
@@ -1277,6 +1278,7 @@ volume_mount_ready_cb (GObject      *source_volume,
     }
 
   update_places (view);
+  g_object_unref (view);
 }
 
 static void
@@ -1311,6 +1313,8 @@ unmount_ready_cb (GObject      *source_mount,
 
       g_clear_error (&error);
     }
+
+  g_object_unref (view);
 }
 
 static gboolean
@@ -1355,6 +1359,8 @@ unmount_mount (GtkPlacesView *view,
   priv->unmounting_mount = TRUE;
   update_loading (view);
 
+  g_object_ref (view);
+
   operation = gtk_mount_operation_new (GTK_WINDOW (toplevel));
   g_mount_unmount_with_operation (mount,
                                   0,
@@ -1398,6 +1404,9 @@ mount_server (GtkPlacesView *view,
 
   g_mount_operation_set_password_save (operation, G_PASSWORD_SAVE_FOR_SESSION);
 
+  /* make sure we keep the view around for as long as we are running */
+  g_object_ref (view);
+
   g_file_mount_enclosing_volume (location,
                                  0,
                                  operation,
@@ -1430,6 +1439,9 @@ mount_volume (GtkPlacesView *view,
 
   g_mount_operation_set_password_save (operation, G_PASSWORD_SAVE_FOR_SESSION);
 
+  /* make sure we keep the view around for as long as we are running */
+  g_object_ref (view);
+
   g_volume_mount (volume,
                   0,
                   operation,