[glib/wip/multibinding] Some more work-in-progress

[Matthias Clasen <matthiasc src gnome org>]

commit 0175222353240f46aee5df4d7d8ebbf0526dc730
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Feb 10 07:25:00 2016 -0500

    Some more work-in-progress

 gobject/gmultibinding.c      |   13 ++++++++++++-
 gobject/gmultibinding.h      |   21 +++++++++++++++++++--
 gobject/tests/multibinding.c |    2 ++
 3 files changed, 33 insertions(+), 3 deletions(-)
---
diff --git a/gobject/gmultibinding.c b/gobject/gmultibinding.c
index 9399f1b..52d9890 100644
--- a/gobject/gmultibinding.c
+++ b/gobject/gmultibinding.c
@@ -154,17 +154,24 @@ on_source_notify (GObject       *gobject,
   GValue *to_values;
   gboolean res;
   gint i;
+  gint notified;
 
   if (binding->is_frozen)
     return;
 
+  notified = -1;
   from_values = g_new0 (GValue, binding->n_sources);
   for (i = 0; i < binding->n_sources; i++)
     {
       g_value_init (&from_values[i], G_PARAM_SPEC_VALUE_TYPE (binding->source_pspec[i]));
       g_object_get_property (binding->source[i], binding->source_pspec[i]->name, &from_values[i]);
+
+      if (gobject == binding->source[i])
+        notified = i;
     }
 
+  g_assert (0 <= notified && notified < binding->n_sources);
+
   to_values = g_new0 (GValue, binding->n_targets);
   for (i = 0; i < binding->n_targets; i++)
     {
@@ -172,7 +179,7 @@ on_source_notify (GObject       *gobject,
       g_object_get_property (binding->target[i], binding->target_pspec[i]->name, &to_values[i]);
     }
 
-  res = binding->transform (binding, (const GValue *)from_values, to_values, binding->transform_data);
+  res = binding->transform (binding, notified, (const GValue *)from_values, to_values, 
binding->transform_data);
 
   if (res)
     {
@@ -339,6 +346,7 @@ g_object_multi_bind_property_v (gint                        n_sources,
                                 gint                        n_targets,
                                 GObject                    *targets[],
                                 const gchar                *target_properties[],
+                                GMultiBindingFlags          flags,
                                 GMultiBindingTransformFunc  transform,
                                 gpointer                    user_data,
                                 GDestroyNotify              notify)
@@ -443,5 +451,8 @@ g_object_multi_bind_property_v (gint                        n_sources,
         }
     }
 
+  if (flags & G_MULTI_BINDING_SYNC_CREATE)
+    on_source_notify (binding->source[0], binding->source_pspec[0], binding);
+
   return binding;
 }
diff --git a/gobject/gmultibinding.h b/gobject/gmultibinding.h
index 36c1430..948b9ef 100644
--- a/gobject/gmultibinding.h
+++ b/gobject/gmultibinding.h
@@ -34,6 +34,11 @@ G_BEGIN_DECLS
 #define G_MULTI_BINDING(obj)          (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_MULTI_BINDING, 
GMultiBinding))
 #define G_IS_MULTI_BINDING(obj)       (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_MULTI_BINDING))
 
+typedef enum { /*< prefix=G_MULTI_BINDING >*/
+  G_MULTI_BINDING_DEFAULT        = 0,
+  G_MULTI_BINDING_SYNC_CREATE    = 1 << 1
+} GMultiBindingFlags;
+
 /**
  * GMultiBinding:
  *
@@ -45,6 +50,7 @@ G_BEGIN_DECLS
 typedef struct _GMultiBinding   GMultiBinding;
 
 typedef gboolean (* GMultiBindingTransformFunc) (GMultiBinding  *binding,
+                                                 gint            notified,
                                                  const GValue    from_values[],
                                                  GValue          to_values[],
                                                  gpointer        user_data);
@@ -74,15 +80,26 @@ GLIB_AVAILABLE_IN_ALL
 void                  g_multi_binding_unbind              (GMultiBinding *binding);
 
 GLIB_AVAILABLE_IN_ALL
-GMultiBinding        *g_object_multi_bind_property_v      (gint                       n_sources,
+GMultiBinding        *g_object_bind_properties_v          (gint                       n_sources,
                                                            GObject                   *sources[],
                                                            const gchar               *source_properties[],
                                                            gint                       n_targets,
                                                            GObject                   *targets[],
                                                            const gchar               *target_properties[],
+                                                           GMultiBindingFlags         flags,
+                                                           GMultiBindingTransformFunc transform,
+                                                           gpointer                   user_data,
+                                                           GDestroyNotify             notify);
+GLIB_AVAILABLE_IN_ALL
+GMultiBinding        *g_object_bind_properties            (GObject                   *source,
+                                                           const gchar               *property,
+                                                           ...
+                                                           GObject                   *target,
+                                                           const gchar               *property,
+                                                           ...
+                                                           GMultiBindingFlags         flags,
                                                            GMultiBindingTransformFunc transform,
                                                            gpointer                   user_data,
                                                            GDestroyNotify             notify);
-
 
 #endif /* __G_MULTI_BINDING_H__ */
diff --git a/gobject/tests/multibinding.c b/gobject/tests/multibinding.c
index afff184..3305e76 100644
--- a/gobject/tests/multibinding.c
+++ b/gobject/tests/multibinding.c
@@ -237,6 +237,7 @@ binding_target_init (BindingTarget *self)
 
 static gboolean
 munge_two_ints (GMultiBinding  *binding,
+                gint            notified,
                 const GValue    from_values[],
                 GValue          to_values[],
                 gpointer        user_data)
@@ -273,6 +274,7 @@ multibinding_basic (void)
   target_props[1] = "bar";
   binding = g_object_multi_bind_property_v (2, sources, source_props,
                                             2, targets, target_props,
+                                            G_MULTI_BINDING_DEFAULT,
                                             munge_two_ints,
                                             NULL, NULL);
   g_object_add_weak_pointer (G_OBJECT (binding), (gpointer *) &binding);