[gnome-builder/wip/chergert/perspective] object: add ide_object_notify_in_main()

[Christian Hergert <chergert src gnome org>]

commit e9798c872793f7a887e40431c79c9176e77b9371
Author: Christian Hergert <chergert redhat com>
Date:   Thu Dec 17 03:57:35 2015 -0800

    object: add ide_object_notify_in_main()
    
    This helper will do a g_object_notify_by_pspec() from the main thread.
    Useful for thread-safe objects that want to notify.
    
    We should consider warning if not explicit notify.

 libide/ide-object.c |   40 ++++++++++++++++++++++++++++++++++++++++
 libide/ide-object.h |   49 +++++++++++++++++++++++++------------------------
 2 files changed, 65 insertions(+), 24 deletions(-)
---
diff --git a/libide/ide-object.c b/libide/ide-object.c
index 4c0d602..da347a7 100644
--- a/libide/ide-object.c
+++ b/libide/ide-object.c
@@ -573,3 +573,43 @@ ide_object_release (IdeObject *self)
 
   ide_context_release (priv->context);
 }
+
+static gboolean
+ide_object_notify_in_main_cb (gpointer data)
+{
+  struct {
+    GObject    *object;
+    GParamSpec *pspec;
+  } *notify = data;
+
+  g_assert (notify != NULL);
+  g_assert (G_IS_OBJECT (notify->object));
+  g_assert (notify->pspec != NULL);
+
+  g_object_notify_by_pspec (notify->object, notify->pspec);
+
+  g_object_unref (notify->object);
+  g_param_spec_unref (notify->pspec);
+  g_slice_free1 (sizeof *notify, notify);
+
+  return G_SOURCE_REMOVE;
+}
+
+void
+ide_object_notify_in_main (gpointer    instance,
+                           GParamSpec *pspec)
+{
+  struct {
+    GObject    *object;
+    GParamSpec *pspec;
+  } *notify;
+
+  g_return_if_fail (G_IS_OBJECT (instance));
+  g_return_if_fail (pspec != NULL);
+
+  notify = g_slice_alloc0 (sizeof *notify);
+  notify->object = g_object_ref (instance);
+  notify->pspec = g_param_spec_ref (pspec);
+
+  g_timeout_add (0, ide_object_notify_in_main_cb, notify);
+}
diff --git a/libide/ide-object.h b/libide/ide-object.h
index a32352d..642723b 100644
--- a/libide/ide-object.h
+++ b/libide/ide-object.h
@@ -38,30 +38,31 @@ struct _IdeObjectClass
                        IdeContext *context);
 };
 
-IdeContext *ide_object_get_context (IdeObject            *self);
-void        ide_object_set_context (IdeObject            *self,
-                                    IdeContext           *context);
-void        ide_object_new_for_extension_async
-                                   (GType                 interface_gtype,
-                                    GCompareDataFunc      sort_priority_func,
-                                    gpointer              sort_proirity_data,
-                                    int                   io_priority,
-                                    GCancellable         *cancellable,
-                                    GAsyncReadyCallback   callback,
-                                    gpointer              user_data,
-                                    const gchar          *first_property,
-                                    ...);
-void        ide_object_new_async   (const gchar          *extension_point,
-                                    int                   io_priority,
-                                    GCancellable         *cancellable,
-                                    GAsyncReadyCallback   callback,
-                                    gpointer              user_data,
-                                    const gchar          *first_property,
-                                    ...);
-IdeObject  *ide_object_new_finish  (GAsyncResult         *result,
-                                    GError              **error);
-gboolean    ide_object_hold        (IdeObject            *self);
-void        ide_object_release     (IdeObject            *self);
+IdeContext *ide_object_get_context             (IdeObject            *self);
+void        ide_object_set_context             (IdeObject            *self,
+                                                IdeContext           *context);
+void        ide_object_new_for_extension_async (GType                 interface_gtype,
+                                                GCompareDataFunc      sort_priority_func,
+                                                gpointer              sort_proirity_data,
+                                                int                   io_priority,
+                                                GCancellable         *cancellable,
+                                                GAsyncReadyCallback   callback,
+                                                gpointer              user_data,
+                                                const gchar          *first_property,
+                                                ...);
+void        ide_object_new_async               (const gchar          *extension_point,
+                                                int                   io_priority,
+                                                GCancellable         *cancellable,
+                                                GAsyncReadyCallback   callback,
+                                                gpointer              user_data,
+                                                const gchar          *first_property,
+                                                ...);
+IdeObject  *ide_object_new_finish              (GAsyncResult         *result,
+                                                GError              **error);
+gboolean    ide_object_hold                    (IdeObject            *self);
+void        ide_object_release                 (IdeObject            *self);
+void        ide_object_notify_in_main          (gpointer              instance,
+                                                GParamSpec           *pspec);
 
 G_END_DECLS