[gnome-todo] task-list-view: Save task on drop

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 63818a37b6f93ced5f1bd171c8483bebeecb0770
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Apr 3 21:47:04 2020 -0300

    task-list-view: Save task on drop
    
    After dropping a task, it is important to actually
    save it, otherwise Drag n' Drop ends up being a
    no-op.

 src/task-list-view/gtd-task-list-view.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/task-list-view/gtd-task-list-view.c b/src/task-list-view/gtd-task-list-view.c
index 38673bb..848cc79 100644
--- a/src/task-list-view/gtd-task-list-view.c
+++ b/src/task-list-view/gtd-task-list-view.c
@@ -827,6 +827,7 @@ on_drop_target_drag_drop_cb (GtkDropTarget   *drop_target,
 {
   GtdTaskListViewPrivate *priv;
   GtkListBoxRow *drop_row;
+  GtdProvider *provider;
   GtdTaskRow *hovered_row;
   GtkWidget *row;
   GtdTask *new_parent_task;
@@ -902,6 +903,10 @@ on_drop_target_drag_drop_cb (GtkDropTarget   *drop_target,
   if (new_position != current_position)
     gtd_task_list_move_task_to_position (GTD_TASK_LIST (priv->model), source_task, new_position);
 
+  /* Finally, save the task */
+  provider = gtd_task_list_get_provider (gtd_task_get_list (source_task));
+  gtd_provider_update_task (provider, source_task);
+
   check_dnd_scroll (self, TRUE, -1);
   gdk_drop_finish (drop, GDK_ACTION_MOVE);