Added a get_n_objects() method.

2000-06-09  Federico Mena Quintero  <federico@helixcode.com>

	* idl/evolution-calendar.idl (Cal): Added a get_n_objects()
	method.

	* pcs/cal-backend.c (cal_backend_get_n_objects): New function.

	* pcs/cal-backend-imc.c (cal_backend_imc_get_n_objects):
	Implemented.

	* pcs/cal.c (Cal_get_n_objects): Implemented.

	* cal-client/cal-client.c (cal_client_get_uids): Free the ev.
	(cal_client_get_n_objects): Implemented.

	* cal-util/calobj.h (iCalObjectField): New enumeration to identify
	the fields in an iCalObject.

svn path=/trunk/; revision=3486

4 files changed, 107 insertions, 0 deletions

diff --git a/calendar/pcs/cal-backend-imc.c b/calendar/pcs/cal-backend-imc.c
index a85c8ce535..713cddd7fe 100644
--- a/calendar/pcs/cal-backend-imc.c
+++ b/calendar/pcs/cal-backend-imc.c
@@ -74,6 +74,8 @@ static GnomeVFSURI *cal_backend_imc_get_uri (CalBackend *backend);
 static void cal_backend_imc_add_cal (CalBackend *backend, Cal *cal);
 static CalBackendLoadStatus cal_backend_imc_load (CalBackend *backend, GnomeVFSURI *uri);
 static void cal_backend_imc_create (CalBackend *backend, GnomeVFSURI *uri);
+
+static int cal_backend_imc_get_n_objects (CalBackend *backend, CalObjType type);
 static char *cal_backend_imc_get_object (CalBackend *backend, const char *uid);
 static GList *cal_backend_imc_get_uids (CalBackend *backend, CalObjType type);
 static GList *cal_backend_imc_get_events_in_range (CalBackend *backend, time_t start, time_t end);
@@ -137,6 +139,7 @@ cal_backend_imc_class_init (CalBackendIMCClass *class)
 	backend_class->add_cal = cal_backend_imc_add_cal;
 	backend_class->load = cal_backend_imc_load;
 	backend_class->create = cal_backend_imc_create;
+	backend_class->get_n_objects = cal_backend_imc_get_n_objects;
 	backend_class->get_object = cal_backend_imc_get_object;
 	backend_class->get_uids = cal_backend_imc_get_uids;
 	backend_class->get_events_in_range = cal_backend_imc_get_events_in_range;
@@ -829,6 +832,58 @@ cal_backend_imc_create (CalBackend *backend, GnomeVFSURI *uri)
 	save (cbimc);
 }
 
+struct get_n_objects_closure {
+	CalObjType type;
+	int n;
+};
+
+/* Counts the number of objects of the specified type.  Called from
+ * g_hash_table_foreach().
+ */
+static void
+count_objects (gpointer key, gpointer value, gpointer data)
+{
+	iCalObject *ico;
+	struct get_n_objects_closure *c;
+	gboolean store;
+
+	ico = value;
+	c = data;
+
+	store = FALSE;
+
+	if (ico->type == ICAL_EVENT)
+		store = (c->type & CALOBJ_TYPE_EVENT) != 0;
+	else if (ico->type == ICAL_TODO)
+		store = (c->type & CALOBJ_TYPE_TODO) != 0;
+	else if (ico->type == ICAL_JOURNAL)
+		store = (c->type & CALOBJ_TYPE_JOURNAL) != 0;
+	else
+		store = (c->type & CALOBJ_TYPE_OTHER) != 0;
+
+	if (store)
+		c->n++;
+}
+
+/* Get_n_objects handler for the IMC backend */
+static int
+cal_backend_imc_get_n_objects (CalBackend *backend, CalObjType type)
+{
+	CalBackendIMC *cbimc;
+	IMCPrivate *priv;
+	struct get_n_objects_closure c;
+
+	cbimc = CAL_BACKEND_IMC (backend);
+	priv = cbimc->priv;
+
+	g_return_val_if_fail (priv->loaded, -1);
+
+	c.type = type;
+	c.n = 0;
+
+	g_hash_table_foreach (priv->object_hash, count_objects, &c);
+}
+
 /* Get_object handler for the IMC backend */
 static char *
 cal_backend_imc_get_object (CalBackend *backend, const char *uid)
diff --git a/calendar/pcs/cal-backend.c b/calendar/pcs/cal-backend.c
index 15cfb1e7bc..7956f77473 100644
--- a/calendar/pcs/cal-backend.c
+++ b/calendar/pcs/cal-backend.c
@@ -177,6 +177,25 @@ cal_backend_create (CalBackend *backend, GnomeVFSURI *uri)
 }
 
 /**
+ * cal_backend_get_n_objects:
+ * @backend: A calendar backend.
+ * @type: Types of objects that will be included in the count.
+ * 
+ * Queries the number of calendar objects of a particular type.
+ * 
+ * Return value: Number of objects of the specified @type.
+ **/
+int
+cal_backend_get_n_objects (CalBackend *backend, CalObjType type)
+{
+	g_return_val_if_fail (backend != NULL, -1);
+	g_return_val_if_fail (IS_CAL_BACKEND (backend), -1);
+
+	g_assert (CLASS (backend)->get_n_objects != NULL);
+	return (* CLASS (backend)->get_n_objects) (backend, type);
+}
+
+/**
  * cal_backend_get_object:
  * @backend: A calendar backend.
  * @uid: Unique identifier for a calendar object.
diff --git a/calendar/pcs/cal-backend.h b/calendar/pcs/cal-backend.h
index 2bbac4b3d4..57f3acf18e 100644
--- a/calendar/pcs/cal-backend.h
+++ b/calendar/pcs/cal-backend.h
@@ -64,6 +64,8 @@ struct _CalBackendClass {
 	void (* add_cal) (CalBackend *backend, Cal *cal);
 	CalBackendLoadStatus (* load) (CalBackend *backend, GnomeVFSURI *uri);
 	void (* create) (CalBackend *backend, GnomeVFSURI *uri);
+
+	int (* get_n_objects) (CalBackend *backend, CalObjType type);
 	char *(* get_object) (CalBackend *backend, const char *uid);
 	GList *(* get_uids) (CalBackend *backend, CalObjType type);
 	GList *(* get_events_in_range) (CalBackend *backend, time_t start, time_t end);
@@ -85,6 +87,8 @@ CalBackendLoadStatus cal_backend_load (CalBackend *backend, GnomeVFSURI *uri);
 
 void cal_backend_create (CalBackend *backend, GnomeVFSURI *uri);
 
+int cal_backend_get_n_objects (CalBackend *backend, CalObjType type);
+
 char *cal_backend_get_object (CalBackend *backend, const char *uid);
 
 GList *cal_backend_get_uids (CalBackend *backend, CalObjType type);
diff --git a/calendar/pcs/cal.c b/calendar/pcs/cal.c
index 13fab067f8..a01c0ce8dc 100644
--- a/calendar/pcs/cal.c
+++ b/calendar/pcs/cal.c
@@ -166,7 +166,35 @@ Cal_get_uri (PortableServer_Servant servant,
 	g_free (str_uri);
 
 	return str_uri_copy;
+}
+
+/* Cal::get_n_objects method */
+static CORBA_long
+Cal_get_n_objects (PortableServer_Servant servant,
+		   Evolution_Calendar_CalObjType type,
+		   CORBA_Environment *ev)
+{
+	Cal *cal;
+	CalPrivate *priv;
+	int t;
+	int n;
+
+	cal = CAL (bonobo_object_from_servant (servant));
+	priv = cal->priv;
+
+	/* Translate the CORBA flags to our own flags */
+
+	t = (((type & Evolution_Calendar_TYPE_EVENT) ? CALOBJ_TYPE_EVENT : 0)
+	     | ((type & Evolution_Calendar_TYPE_TODO) ? CALOBJ_TYPE_TODO : 0)
+	     | ((type & Evolution_Calendar_TYPE_JOURNAL) ? CALOBJ_TYPE_JOURNAL : 0)
+	     | ((type & Evolution_Calendar_TYPE_OTHER) ? CALOBJ_TYPE_OTHER : 0)
+	     /*
+	     | ((type & Evolution_Calendar_TYPE_ANY) ? CALOBJ_TYPE_ANY : 0)
+	     */
+	     );
 
+	n = cal_backend_get_n_objects (priv->backend, t);
+	return n;
 }
 
 /* Cal::get_object method */
@@ -504,6 +532,7 @@ cal_get_epv (void)
 
 	epv = g_new0 (POA_Evolution_Calendar_Cal__epv, 1);
 	epv->_get_uri = Cal_get_uri;
+	epv->get_n_objects = Cal_get_n_objects;
 	epv->get_object = Cal_get_object;
 	epv->get_uids = Cal_get_uids;
 	epv->get_events_in_range = Cal_get_events_in_range;