[libdazzle] properties-group: add helper to add all properties

[Christian Hergert <chergert src gnome org>]

commit adc4c33d5b3b728358212f535c142f36dc1ef0d6
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jul 7 14:20:14 2017 -0700

    properties-group: add helper to add all properties
    
    In very simple cases, you might just want to add all properties
    from a GObject. dzl_properties_group_add_all_properties() will
    do that for you. It does not, however, allow control over
    additional flags.

 src/actions/dzl-properties-group.c |   55 ++++++++++++++++++++++++++++++++++++
 src/actions/dzl-properties-group.h |   21 +++++++------
 2 files changed, 66 insertions(+), 10 deletions(-)
---
diff --git a/src/actions/dzl-properties-group.c b/src/actions/dzl-properties-group.c
index c00816b..fb0718f 100644
--- a/src/actions/dzl-properties-group.c
+++ b/src/actions/dzl-properties-group.c
@@ -638,6 +638,9 @@ dzl_properties_group_init (DzlPropertiesGroup *self)
  * action name mapping for this group. Until you've called this,
  * no actions are mapped.
  *
+ * Note that #DzlPropertiesGroup only holds a weak reference to
+ * @object and therefore you must keep @object alive elsewhere.
+ *
  * Returns: (transfer full): A #DzlPropertiesGroup
  *
  * Since: 3.26
@@ -764,3 +767,55 @@ dzl_properties_group_remove (DzlPropertiesGroup *self,
         }
     }
 }
+
+/**
+ * dzl_properties_group_add_all_properties:
+ * @self: A #DzlPropertiesGroup
+ *
+ * This function will try to add all properties found on the target
+ * instance to the group. Only properties that are supported by the
+ * #DzlPropertiesGroup will be added.
+ *
+ * The action name of all added properties will be identical to their
+ * property name.
+ *
+ * Since: 3.26
+ */
+void
+dzl_properties_group_add_all_properties (DzlPropertiesGroup *self)
+{
+  g_autoptr(GObject) object = NULL;
+  g_autofree GParamSpec **pspec = NULL;
+  GObjectClass *object_class;
+  guint n_pspec = 0;
+
+  g_return_if_fail (DZL_IS_PROPERTIES_GROUP (self));
+
+  object = g_weak_ref_get (&self->object_ref);
+
+  if (object == NULL)
+    {
+      g_warning ("Cannot add properties, object has already been disposed");
+      return;
+    }
+
+  object_class = G_OBJECT_GET_CLASS (object);
+  pspec = g_object_class_list_properties (object_class, &n_pspec);
+
+  for (guint i = 0; i < n_pspec; i++)
+    {
+      switch (pspec[i]->value_type)
+        {
+        case G_TYPE_BOOLEAN:
+        case G_TYPE_DOUBLE:
+        case G_TYPE_INT:
+        case G_TYPE_STRING:
+        case G_TYPE_UINT:
+          dzl_properties_group_add_property (self, pspec[i]->name, pspec[i]->name);
+          break;
+
+        default:
+          break;
+        }
+    }
+}
diff --git a/src/actions/dzl-properties-group.h b/src/actions/dzl-properties-group.h
index b769cce..f30d748 100644
--- a/src/actions/dzl-properties-group.h
+++ b/src/actions/dzl-properties-group.h
@@ -32,15 +32,16 @@ typedef enum
   DZL_PROPERTIES_FLAGS_STATEFUL_BOOLEANS = 1 << 0,
 } DzlPropertiesFlags;
 
-DzlPropertiesGroup *dzl_properties_group_new               (GObject            *object);
-void                dzl_properties_group_add_property      (DzlPropertiesGroup *self,
-                                                            const gchar        *name,
-                                                            const gchar        *property_name);
-void                dzl_properties_group_add_property_full (DzlPropertiesGroup *self,
-                                                            const gchar        *name,
-                                                            const gchar        *property_name,
-                                                            DzlPropertiesFlags  flags);
-void                dzl_properties_group_remove            (DzlPropertiesGroup *self,
-                                                            const gchar        *name);
+DzlPropertiesGroup *dzl_properties_group_new                (GObject            *object);
+void                dzl_properties_group_add_property       (DzlPropertiesGroup *self,
+                                                             const gchar        *name,
+                                                             const gchar        *property_name);
+void                dzl_properties_group_add_property_full  (DzlPropertiesGroup *self,
+                                                             const gchar        *name,
+                                                             const gchar        *property_name,
+                                                             DzlPropertiesFlags  flags);
+void                dzl_properties_group_add_all_properties (DzlPropertiesGroup *self);
+void                dzl_properties_group_remove             (DzlPropertiesGroup *self,
+                                                             const gchar        *name);
 
 G_END_DECLS