[gnome-builder/wip/greeter] egg-binding-set: add egg_binding_set_bind_full()

[Christian Hergert <chergert src gnome org>]

commit 26358cd77cc09679c2788e330ff553594a71a7d9
Author: Christian Hergert <christian hergert me>
Date:   Sat May 9 21:55:21 2015 -0700

    egg-binding-set: add egg_binding_set_bind_full()
    
    Allow setting transform functions.
    
    Main caveat here is to manage the destroy notify ourselves instead of
    letting the GBinding handle it.

 contrib/egg/egg-binding-set.c |   58 ++++++++++++++++++++++++++++++++--------
 contrib/egg/egg-binding-set.h |   25 ++++++++++++-----
 2 files changed, 63 insertions(+), 20 deletions(-)
---
diff --git a/contrib/egg/egg-binding-set.c b/contrib/egg/egg-binding-set.c
index a4b0167..4221333 100644
--- a/contrib/egg/egg-binding-set.c
+++ b/contrib/egg/egg-binding-set.c
@@ -44,12 +44,16 @@ struct _EggBindingSet
 
 typedef struct
 {
-  EggBindingSet *set;
-  const gchar   *source_property;
-  const gchar   *target_property;
-  GObject       *target;
-  GBinding      *binding;
-  GBindingFlags  binding_flags;
+  EggBindingSet         *set;
+  const gchar           *source_property;
+  const gchar           *target_property;
+  GObject               *target;
+  GBinding              *binding;
+  gpointer               user_data;
+  GDestroyNotify         user_data_destroy;
+  GBindingTransformFunc  transform_to;
+  GBindingTransformFunc  transform_from;
+  GBindingFlags          binding_flags;
 } LazyBinding;
 
 G_DEFINE_TYPE (EggBindingSet, egg_binding_set, G_TYPE_OBJECT)
@@ -91,11 +95,15 @@ egg_binding_set_connect (EggBindingSet *self,
            lazy_binding->binding_flags);
 #endif
 
-  lazy_binding->binding = g_object_bind_property (self->source,
-                                                  lazy_binding->source_property,
-                                                  lazy_binding->target,
-                                                  lazy_binding->target_property,
-                                                  lazy_binding->binding_flags);
+  lazy_binding->binding = g_object_bind_property_full (self->source,
+                                                       lazy_binding->source_property,
+                                                       lazy_binding->target,
+                                                       lazy_binding->target_property,
+                                                       lazy_binding->binding_flags,
+                                                       lazy_binding->transform_to,
+                                                       lazy_binding->transform_from,
+                                                       lazy_binding->user_data,
+                                                       NULL);
 }
 
 static void
@@ -174,6 +182,10 @@ lazy_binding_free (gpointer data)
   lazy_binding->set = NULL;
   lazy_binding->source_property = NULL;
   lazy_binding->target_property = NULL;
+
+  if (lazy_binding->user_data_destroy)
+    lazy_binding->user_data_destroy (lazy_binding->user_data);
+
   g_slice_free (LazyBinding, lazy_binding);
 }
 
@@ -361,6 +373,24 @@ egg_binding_set_bind (EggBindingSet *self,
                       const gchar   *target_property,
                       GBindingFlags  flags)
 {
+  egg_binding_set_bind_full (self, source_property,
+                             target, target_property,
+                             flags,
+                             NULL, NULL,
+                             NULL, NULL);
+}
+
+void
+egg_binding_set_bind_full (EggBindingSet         *self,
+                           const gchar           *source_property,
+                           gpointer               target,
+                           const gchar           *target_property,
+                           GBindingFlags          flags,
+                           GBindingTransformFunc  transform_to,
+                           GBindingTransformFunc  transform_from,
+                           gpointer               user_data,
+                           GDestroyNotify         user_data_destroy)
+{
   LazyBinding *lazy_binding;
 
   g_return_if_fail (EGG_IS_BINDING_SET (self));
@@ -379,7 +409,11 @@ egg_binding_set_bind (EggBindingSet *self,
   lazy_binding->source_property = g_intern_string (source_property);
   lazy_binding->target_property = g_intern_string (target_property);
   lazy_binding->target = target;
-  lazy_binding->binding_flags = flags;
+  lazy_binding->binding_flags = flags | G_BINDING_SYNC_CREATE;
+  lazy_binding->transform_to = transform_to;
+  lazy_binding->transform_from = transform_from;
+  lazy_binding->user_data = user_data;
+  lazy_binding->user_data_destroy = user_data_destroy;
 
   g_object_weak_ref (target,
                      egg_binding_set__target_weak_notify,
diff --git a/contrib/egg/egg-binding-set.h b/contrib/egg/egg-binding-set.h
index cbe1caf..11c28e6 100644
--- a/contrib/egg/egg-binding-set.h
+++ b/contrib/egg/egg-binding-set.h
@@ -28,14 +28,23 @@ G_BEGIN_DECLS
 G_DECLARE_FINAL_TYPE (EggBindingSet, egg_binding_set, EGG, BINDING_SET, GObject)
 
 EggBindingSet *egg_binding_set_new        (void);
-GObject       *egg_binding_set_get_source (EggBindingSet *self);
-void           egg_binding_set_set_source (EggBindingSet *self,
-                                           gpointer       source);
-void           egg_binding_set_bind       (EggBindingSet *self,
-                                           const gchar   *source_property,
-                                           gpointer       target,
-                                           const gchar   *target_property,
-                                           GBindingFlags  flags);
+GObject       *egg_binding_set_get_source (EggBindingSet         *self);
+void           egg_binding_set_set_source (EggBindingSet         *self,
+                                           gpointer               source);
+void           egg_binding_set_bind       (EggBindingSet         *self,
+                                           const gchar           *source_property,
+                                           gpointer               target,
+                                           const gchar           *target_property,
+                                           GBindingFlags          flags);
+void           egg_binding_set_bind_full  (EggBindingSet         *self,
+                                           const gchar           *source_property,
+                                           gpointer               target,
+                                           const gchar           *target_property,
+                                           GBindingFlags          flags,
+                                           GBindingTransformFunc  transform_to,
+                                           GBindingTransformFunc  transform_from,
+                                           gpointer               user_data,
+                                           GDestroyNotify         notify);
 
 G_END_DECLS