origin: Add "numeric-addresses" property

This will be useful in the dialpad to determine whether we should allow
only numeric input or not.

src/calls-origin.c

@@ -70,6 +70,14 @@ calls_origin_default_init (CallsOriginInterface *iface)
                          NULL,
                          G_PARAM_READABLE));
 
+  g_object_interface_install_property (
+    iface,
+    g_param_spec_boolean ("numeric-addresses",
+                          "Numeric addresses",
+                          "Whether this origin can only dial numeric addresses (aka numbers)",
+                          TRUE,
+                          G_PARAM_READABLE));
+
   signals[SIGNAL_CALL_ADDED] =
     g_signal_newv ("call-added",
 		   G_TYPE_FROM_INTERFACE (iface),
@@ -113,6 +121,23 @@ DEFINE_ORIGIN_GETTER(name, char *, NULL);
  */
 DEFINE_ORIGIN_GETTER(calls, GList *, NULL);
 
+/**
+ * calls_origin_get_numeric_addresses:
+ * @self: a #CallsOrigin
+ *
+ * Returns: %TRUE if this origin can only dial numeric addresses (i.e. telephone numbers),
+ * %FALSE otherwise.
+ */
+gboolean
+calls_origin_get_numeric_addresses (CallsOrigin *origin)
+{
+  gboolean numeric;
+
+  g_return_val_if_fail (CALLS_IS_ORIGIN (origin), FALSE);
+
+  g_object_get (origin, "numeric-addresses", &numeric, NULL);
+  return numeric;
+}
 
 /**
  * calls_origin_foreach_call:

src/calls-origin.h

@@ -52,6 +52,7 @@ typedef void (*CallsOriginForeachCallFunc) (gpointer param, CallsCall* call, Cal
 
 char *                 calls_origin_get_name                (CallsOrigin *self);
 GList *                calls_origin_get_calls               (CallsOrigin *self);
+gboolean               calls_origin_get_numeric_addresses   (CallsOrigin *self);
 void                   calls_origin_foreach_call            (CallsOrigin *self,
                                                              CallsOriginForeachCallFunc callback,
                                                              gpointer     param);