From f6d60f33a0ab2af025e7d13a8dea9a93c6eab3f9 Mon Sep 17 00:00:00 2001
From: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
Date: Thu, 21 Jan 2010 11:57:18 +0000
Subject: add empathy_connection_managers_call_when_ready

That's easier to use than checking if ready and connecting a callback.
---
 libempathy/empathy-connection-managers.c | 63 ++++++++++++++++++++++++++++++++
 libempathy/empathy-connection-managers.h | 10 +++++
 2 files changed, 73 insertions(+)

(limited to 'libempathy')

diff --git a/libempathy/empathy-connection-managers.c b/libempathy/empathy-connection-managers.c
index 5d381075e..7085b507b 100644
--- a/libempathy/empathy-connection-managers.c
+++ b/libempathy/empathy-connection-managers.c
@@ -291,3 +291,66 @@ empathy_connection_managers_get_cms_num (EmpathyConnectionManagers *self)
 
   return g_list_length (priv->cms);
 }
+
+typedef struct
+{
+  EmpathyConnectionManagers *self;
+  EmpathyConnectionManagersWhenReadyCb callback;
+  gpointer user_data;
+  guint ready_id;
+} CallWhenReadyContext;
+
+static void
+call_when_ready_ctx_free (CallWhenReadyContext *ctx)
+{
+  g_signal_handler_disconnect (ctx->self, ctx->ready_id);
+  g_object_unref (ctx->self);
+  g_slice_free (CallWhenReadyContext, ctx);
+}
+
+static void
+cwr_ready (EmpathyConnectionManagers *self,
+    GParamSpec *spec,
+    CallWhenReadyContext *ctx)
+{
+  g_assert (ctx->callback != NULL);
+
+  ctx->callback (self, NULL, ctx->user_data);
+
+  call_when_ready_ctx_free (ctx);
+}
+
+static CallWhenReadyContext *
+call_when_ready_ctx_new (EmpathyConnectionManagers *self,
+    EmpathyConnectionManagersWhenReadyCb callback,
+    gpointer user_data)
+{
+  CallWhenReadyContext *ctx = g_slice_new (CallWhenReadyContext);
+
+  ctx->self = g_object_ref (self);
+  ctx->callback = callback;
+  ctx->user_data = user_data;
+
+  ctx->ready_id = g_signal_connect (self, "notify::ready",
+      G_CALLBACK (cwr_ready), ctx);
+
+  return ctx;
+}
+
+void
+empathy_connection_managers_call_when_ready (
+    EmpathyConnectionManagers *self,
+    EmpathyConnectionManagersWhenReadyCb callback,
+    gpointer user_data)
+{
+  EmpathyConnectionManagersPriv *priv = GET_PRIV (self);
+
+  if (priv->ready)
+    {
+      callback (self, NULL, user_data);
+    }
+  else
+    {
+      call_when_ready_ctx_new (self, callback, user_data);
+    }
+}
diff --git a/libempathy/empathy-connection-managers.h b/libempathy/empathy-connection-managers.h
index 17289d36d..956f24315 100644
--- a/libempathy/empathy-connection-managers.h
+++ b/libempathy/empathy-connection-managers.h
@@ -72,6 +72,16 @@ guint empathy_connection_managers_get_cms_num
 TpConnectionManager *empathy_connection_managers_get_cm (
   EmpathyConnectionManagers *managers, const gchar *cm);
 
+typedef void (*EmpathyConnectionManagersWhenReadyCb) (
+    EmpathyConnectionManagers *managers,
+    const GError *error,
+    gpointer user_data);
+
+void empathy_connection_managers_call_when_ready (
+    EmpathyConnectionManagers *managers,
+    EmpathyConnectionManagersWhenReadyCb callback,
+    gpointer user_data);
+
 G_END_DECLS
 
 #endif /* #ifndef __EMPATHY_CONNECTION_MANAGERS_H__*/
-- 
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