2001-08-29 Federico Mena Quintero <federico@ximian.com>
* pcs/cal-backend-file.c (cal_backend_file_remove_object): See if
the set of categories changed by using the removed_categories hash
table.
(cal_backend_file_init): Create a table of removed categories.
This allows us to notify if and only if the set of category
changes when an object is updated/removed, instead of
unconditionally notifying if an object is updated.
(cal_backend_file_update_objects): Only notify if the set of
categories really changed.
(update_categories_from_comp): Shuffle the categories between the
priv->categories and priv->removed_categories lists.
svn path=/trunk/; revision=12522
49f07e62b5