[gnome-calendar/calendar-management] manager: implement GcalManager::get_origin method

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit fd17907def51c59681e977c435db65f9a2d2843b
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Feb 3 13:11:48 2015 -0200

    manager: implement GcalManager::get_origin method
    
    This method retrieves the ESource's origin information needed by the source management dialog.

 src/gcal-manager.c |   71 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/gcal-manager.h |    3 ++
 2 files changed, 74 insertions(+), 0 deletions(-)
---
diff --git a/src/gcal-manager.c b/src/gcal-manager.c
index 03d985e..87dee02 100644
--- a/src/gcal-manager.c
+++ b/src/gcal-manager.c
@@ -1066,3 +1066,74 @@ gcal_manager_get_events (GcalManager  *manager,
   return list;
 }
 
+/**
+ * gcal_manager_get_origin:
+ * @manager: a { link GcalManager} instance.
+ * @source: the reference { link ESource}.
+ *
+ * Tries to find the origin of the given @source.
+ * It's achieved by looking though the @source's
+ * parents until it finds a matching one.
+ *
+ * Returns: a newly allocated { link GcalSourceOrigin}.
+ */
+GcalSourceOrigin*
+gcal_manager_get_origin (GcalManager *manager,
+                         ESource     *source)
+{
+  GcalManagerPrivate *priv = gcal_manager_get_instance_private (manager);
+  GcalSourceOrigin *origin;
+  ESource *parent;
+  gchar *old_uid;
+
+  old_uid = NULL;
+  origin = g_new0 (GcalSourceOrigin, 1);
+
+  origin->source = source;
+
+  while (TRUE)
+    {
+      const gchar *parent_uid;
+
+      parent_uid = e_source_get_parent (source);
+      parent = e_source_registry_ref_source (priv->source_registry, parent_uid);
+
+      if (g_strcmp0 (old_uid, parent_uid) == 0)
+        break;
+
+      /**
+       * If the source has a GOA extension,
+       * do simple checks to find out the
+       * origin.
+       */
+      if (e_source_has_extension (parent, E_SOURCE_EXTENSION_GOA))
+        {
+          /* Google */
+          if (g_str_has_suffix (parent_uid, "gmail.com"))
+              origin->name = "Google";
+
+          /**
+           * The only other source that supports
+           * calendars is ownCloud
+           */
+          else
+            origin->name = "ownCloud";
+
+          origin->account = e_source_get_display_name (parent);
+        }
+      else
+        {
+          origin->name = e_source_get_display_name (parent);
+          origin->account = NULL;
+        }
+
+      if (old_uid != NULL)
+        g_free (old_uid);
+
+      old_uid = g_strdup (parent_uid);
+
+      g_object_unref (parent);
+    }
+
+  return origin;
+}
diff --git a/src/gcal-manager.h b/src/gcal-manager.h
index ee130d9..ab00258 100644
--- a/src/gcal-manager.h
+++ b/src/gcal-manager.h
@@ -130,6 +130,9 @@ GList*         gcal_manager_get_events              (GcalManager        *manager
                                                      icaltimetype       *range_start,
                                                      icaltimetype       *range_end);
 
+GcalSourceOrigin* gcal_manager_get_origin           (GcalManager        *manager,
+                                                     ESource            *source);
+
 G_END_DECLS
 
 #endif /* __GCAL_MANAGER_H__ */