Added get_uids() method to get a list of UIDs based on object types.

2000-02-08  Federico Mena Quintero  <federico@helixcode.com>

	* evolution-calendar.idl (Cal): Added get_uids() method to get a
	list of UIDs based on object types.

	* cal-backend.c (cal_backend_get_uids): Implemented get_uids() in
	the backend.

	* cal.c (Cal_get_uids): Implemented get_uids() method.

	* cal-client.c (cal_client_get_uids): Implemented client-side
	function.

	* cal-util.c (cal_obj_instance_list_free): Doh.  Free the list,
	not the last link.
	(cal_obj_uid_list_free): New function to free a list of UIDs.

	* GnomeCal.idl (Repository): Removed unused method
	get_object_by_id_list().  This is just for cleanup purposes and to
	remind me exactly of what needs to be moved over to
	evolution-calendar.idl.
	(Repository): Removed unused get_objects() method.

	* corba-cal.c (init_calendar_repo_class): Removed the unused
	get_objects method.

	* calobj.h (CalObjFindStatus): New status value enumeration for
	the find function.

	* calobj.c (ical_object_find_in_string): New function to parse a
	complete calendar and find a calendar object in it.  This should
	be used instead ical_object_new_from_string() in the future.

	* evolution-calendar.idl (CalObjInstance): Added an uid field.
	Now the idea is that whenever calendar object strings are passed
	around, their UIDs are passed along with them so that the actual
	object can be pulled from the whole VCAL object using its UID to
	identify it.

	* cal-util.h (CalObjInstance): Added uid field.

	* cal-util.c (cal_obj_instance_list_free): Free the UIDs.

	* cal-backend.c (build_event_list): Store the object's UID in the
	instance structure.

	* cal.c (Cal_get_events_in_range): Copy the UID field to the CORBA
	structure.

	* cal-client.c (cal_client_get_events_in_range): Copy the UID
	field from the CORBA structure.

	* main.c (gnome_cal_file_menu): Removed unfinished html-month stuff.

	* Makefile.am (gnomecal_SOURCES): Removed html-month.c.

	* gnome-cal.c: #include "alarm.h"
	(mail_notify): Made static.

	* alarm.h: #include "calobj.h"

	* corba-cal-factory.h (init_corba_server): Fixed prototype.

	* quick-view.c (create_items_for_event): Made static.

	* gncal-todo.c (column_resized): Made static.

	* layout.c (find_index): Made static.

svn path=/trunk/; revision=1699

1 files changed, 71 insertions, 0 deletions

diff --git a/calendar/cal-backend.c b/calendar/cal-backend.c
index 2039c9c400..17148cb048 100644
--- a/calendar/cal-backend.c
+++ b/calendar/cal-backend.c
@@ -521,6 +521,74 @@ cal_backend_get_object (CalBackend *backend, const char *uid)
 	return retval;
 }
 
+struct get_uids_closure {
+	CalObjType type;
+	GList *uid_list;
+};
+
+/* Builds a list of UIDs for objects that match the sought type.  Called from
+ * g_hash_table_foreach().
+ */
+static void
+build_uids_list (gpointer key, gpointer value, gpointer data)
+{
+	iCalObject *ico;
+	struct get_uids_closure *c;
+	gboolean store;
+
+	ico = value;
+	c = data;
+
+	store = FALSE;
+
+	if (c->type & CALOBJ_TYPE_ANY)
+		store = TRUE;
+	else if (ico->type == ICAL_EVENT)
+		store = (c->type & CALOBJ_TYPE_EVENT) ? TRUE : FALSE;
+	else if (ico->type == ICAL_TODO)
+		store = (c->type & CALOBJ_TYPE_TODO) ? TRUE : FALSE;
+	else if (ico->type == ICAL_JOURNAL)
+		store = (c->type & CALOBJ_TYPE_JOURNAL) ? TRUE : FALSE;
+	else
+		store = (c->type & CALOBJ_TYPE_OTHER) ? TRUE : FALSE;
+
+	if (store)
+		c->uid_list = g_list_prepend (c->uid_list, g_strdup (ico->uid));
+}
+
+/**
+ * cal_backend_get_uids:
+ * @backend: A calendar backend.
+ * @type: Bitmask with types of objects to return.
+ * 
+ * Builds a list of unique identifiers corresponding to calendar objects whose
+ * type matches one of the types specified in the @type flags.
+ * 
+ * Return value: A list of strings that are the sought UIDs.
+ **/
+GList *
+cal_backend_get_uids (CalBackend *backend, CalObjType type)
+{
+	CalBackendPrivate *priv;
+	struct get_uids_closure c;
+
+	g_return_val_if_fail (backend != NULL, NULL);
+	g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
+
+	priv = backend->priv;
+	g_return_val_if_fail (priv->loaded, NULL);
+
+	/* We go through the hash table instead of the lists of particular
+	 * object types so that we can pick up CALOBJ_TYPE_OTHER objects.
+	 */
+
+	c.type = type;
+	c.uid_list = NULL;
+	g_hash_table_foreach (priv->object_hash, build_uids_list, &c);
+
+	return c.uid_list;
+}
+
 struct build_event_list_closure {
 	CalBackend *backend;
 	GList *event_list;
@@ -538,6 +606,9 @@ build_event_list (iCalObject *ico, time_t start, time_t end, void *data)
 	c = data;
 
 	icoi = g_new (CalObjInstance, 1);
+
+	g_assert (ico->uid != NULL);
+	icoi->uid = g_strdup (ico->uid);
 	icoi->calobj = string_from_ical_object (c->backend, ico);
 	icoi->start = start;
 	icoi->end = end;