[gnome-todo/wip/gbsneto/subtasks: 11/27] task-list: emit ::list-changed whenever a task changes

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

commit 34a8080eb6715768ce60c15ed61ea2202705dc5f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Oct 10 21:18:46 2016 -0300

    task-list: emit ::list-changed whenever a task changes

 src/gtd-task-list.c |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/src/gtd-task-list.c b/src/gtd-task-list.c
index f054220..ab53abc 100644
--- a/src/gtd-task-list.c
+++ b/src/gtd-task-list.c
@@ -161,6 +161,14 @@ process_pending_subtasks (GtdTaskList *self,
 }
 
 static void
+task_changed_cb (GtdTask     *task,
+                 GParamSpec  *pspec,
+                 GtdTaskList *self)
+{
+  g_signal_emit (self, signals[TASK_UPDATED], 0, task);
+}
+
+static void
 gtd_task_list_finalize (GObject *object)
 {
   GtdTaskList *self = (GtdTaskList*) object;
@@ -596,6 +604,11 @@ gtd_task_list_save_task (GtdTaskList *list,
       process_pending_subtasks (list, task);
       setup_parent_task (list, task);
 
+      g_signal_connect (task,
+                        "notify",
+                        G_CALLBACK (task_changed_cb),
+                        list);
+
       g_signal_emit (list, signals[TASK_ADDED], 0, task);
 
       e_cal_component_free_id (id);
@@ -623,6 +636,10 @@ gtd_task_list_remove_task (GtdTaskList *list,
   if (!gtd_task_list_contains (list, task))
     return;
 
+  g_signal_handlers_disconnect_by_func (task,
+                                        task_changed_cb,
+                                        list);
+
   priv->tasks = g_list_remove (priv->tasks, task);
 
   g_hash_table_remove (priv->uid_to_task, gtd_object_get_uid (GTD_OBJECT (task)));