[empathy] add empathy_status_presets_is_valid

[Guillaume Desmottes <gdesmott src gnome org>]

commit 4ce928ce7b856c9fcbf61595fae83eed22b90b25
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Wed Jun 17 18:36:28 2009 +0100

    add empathy_status_presets_is_valid

 libempathy/empathy-status-presets.c |   20 ++++++++++++++++++++
 libempathy/empathy-status-presets.h |    1 +
 2 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-status-presets.c b/libempathy/empathy-status-presets.c
index 9f9a203..ec3f232 100644
--- a/libempathy/empathy-status-presets.c
+++ b/libempathy/empathy-status-presets.c
@@ -405,3 +405,23 @@ empathy_status_presets_clear_default (void)
 
 	status_presets_file_save ();
 }
+
+gboolean
+empathy_status_presets_is_valid (TpConnectionPresenceType state)
+{
+	switch (state) {
+		case TP_CONNECTION_PRESENCE_TYPE_UNSET:
+		case TP_CONNECTION_PRESENCE_TYPE_OFFLINE:
+		case TP_CONNECTION_PRESENCE_TYPE_UNKNOWN:
+		case TP_CONNECTION_PRESENCE_TYPE_ERROR:
+			return FALSE;
+
+		case TP_CONNECTION_PRESENCE_TYPE_AVAILABLE:
+		case TP_CONNECTION_PRESENCE_TYPE_AWAY:
+		case TP_CONNECTION_PRESENCE_TYPE_EXTENDED_AWAY:
+		case TP_CONNECTION_PRESENCE_TYPE_HIDDEN:
+		case TP_CONNECTION_PRESENCE_TYPE_BUSY:
+			return TRUE;
+	}
+	return FALSE;
+}
diff --git a/libempathy/empathy-status-presets.h b/libempathy/empathy-status-presets.h
index 335dbcf..331c630 100644
--- a/libempathy/empathy-status-presets.h
+++ b/libempathy/empathy-status-presets.h
@@ -40,6 +40,7 @@ const gchar * empathy_status_presets_get_default_status (void);
 void          empathy_status_presets_set_default        (TpConnectionPresenceType   state,
 							 const gchar *status);
 void          empathy_status_presets_clear_default      (void);
+gboolean      empathy_status_presets_is_valid           (TpConnectionPresenceType   state);
 
 G_END_DECLS