manager: Propagate messages from account

Not all portions from the user interface are listening directly to messages from
accounts, so the manager should propagate them to allow the UI to pick them up.

Closes #340

src/calls-manager.c

@@ -27,6 +27,7 @@
 
 #include "config.h"
 
+#include "calls-account.h"
 #include "calls-application.h"
 #include "calls-contacts-provider.h"
 #include "calls-manager.h"
@@ -199,6 +200,36 @@ update_protocols (CallsManager *self)
   update_state (self);
 }
 
+/* propagate any message from origins, providers, calls, etc */
+static void
+on_message (CallsMessageSource *source,
+            const char         *message,
+            GtkMessageType      message_type,
+            CallsManager       *self)
+{
+  g_autofree char *notification = NULL;
+
+  g_assert (CALLS_IS_MESSAGE_SOURCE (source));
+  g_assert (CALLS_IS_MANAGER (self));
+
+  /* Prefix the message with the name of the source, if known */
+  if (CALLS_IS_ACCOUNT (source)) {
+    notification = g_strdup_printf ("%s: %s",
+                                    calls_account_get_address (CALLS_ACCOUNT (source)),
+                                    message);
+  }
+
+  if (notification) {
+    calls_message_source_emit_message (CALLS_MESSAGE_SOURCE (self),
+                                       notification,
+                                       message_type);
+  } else {
+    calls_message_source_emit_message (CALLS_MESSAGE_SOURCE (self),
+                                       message,
+                                       message_type);
+  }
+}
+
 
 static void
 add_call (CallsManager *self, CallsCall *call, CallsOrigin *origin)
@@ -288,6 +319,11 @@ add_origin (CallsManager *self, CallsOrigin *origin)
 
   g_list_store_append (self->origins, origin);
 
+  g_signal_connect (origin,
+                    "message",
+                    G_CALLBACK (on_message),
+                    self);
+
   g_signal_connect_object (origin,
                            "notify::country-code",
                            G_CALLBACK (update_country_code_cb),