diff options
Diffstat (limited to 'calendar/cal-backend.c')
| -rw-r--r-- | calendar/cal-backend.c | 182 |
1 files changed, 144 insertions, 38 deletions
diff --git a/calendar/cal-backend.c b/calendar/cal-backend.c index 17148cb048..18ed6a6c86 100644 --- a/calendar/cal-backend.c +++ b/calendar/cal-backend.c @@ -20,6 +20,7 @@ */ #include <config.h> +#include <gtk/gtksignal.h> #include "cal-backend.h" #include "calobj.h" #include "../libversit/vcc.h" @@ -36,7 +37,7 @@ typedef struct { /* URI where the calendar data is stored */ GnomeVFSURI *uri; - /* List of Cal client interface objects, each with its listener */ + /* List of Cal objects with their listeners */ GList *clients; /* All the iCalObject structures in the calendar, hashed by UID. The @@ -119,6 +120,55 @@ cal_backend_init (CalBackend *backend) backend->priv = priv; } +/* Saves a calendar */ +static void +save (CalBackend *backend) +{ + /* FIXME */ +} + +/* g_hash_table_foreach() callback to destroy an iCalObject */ +static void +free_ical_object (gpointer key, gpointer value, gpointer data) +{ + iCalObject *ico; + + ico = value; + ical_object_destroy (ico); +} + +/* Destroys a backend's data */ +static void +destroy (CalBackend *backend) +{ + CalBackendPrivate *priv; + + priv = backend->priv; + + if (priv->uri) { + gnome_vfs_uri_unref (priv->uri); + priv->uri = NULL; + } + + g_assert (priv->clients == NULL); + + if (priv->object_hash) { + g_hash_table_foreach (priv->object_hash, free_ical_object, NULL); + g_hash_table_destroy (priv->object_hash); + priv->object_hash = NULL; + } + + g_list_free (priv->events); + g_list_free (priv->todos); + g_list_free (priv->journals); + + priv->events = NULL; + priv->todos = NULL; + priv->journals = NULL; + + priv->loaded = FALSE; +} + /* Destroy handler for the calendar backend */ static void cal_backend_destroy (GtkObject *object) @@ -132,7 +182,10 @@ cal_backend_destroy (GtkObject *object) backend = CAL_BACKEND (object); priv = backend->priv; - /* FIXME: free stuff */ + if (priv->loaded) + save (backend); + + destroy (backend); g_free (priv); @@ -265,6 +318,11 @@ load_from_vobject (CalBackend *backend, VObject *vobject) ical = ical_object_create_from_vobject (this, object_name); + /* FIXME: some broken files may have duplicated UIDs. This is + * Bad(tm). Deal with it by creating new UIDs for them and + * spitting some messages to the console. + */ + if (ical) add_object (backend, ical); } @@ -364,45 +422,57 @@ cal_backend_get_uri (CalBackend *backend) return priv->uri; } -/** - * cal_backend_add_cal: - * @backend: A calendar backend. - * @cal: A calendar client interface object. - * - * Adds a calendar client interface object to a calendar @backend. The calendar - * backend must already have a loaded calendar. - **/ -void -cal_backend_add_cal (CalBackend *backend, Cal *cal) +/* Callback used when a Cal is destroyed */ +static void +cal_destroy_cb (GtkObject *object, gpointer data) { + Cal *cal; + Cal *lcal; + CalBackend *backend; CalBackendPrivate *priv; + GList *l; - g_return_if_fail (backend != NULL); - g_return_if_fail (IS_CAL_BACKEND (backend)); + cal = CAL (object); + backend = CAL_BACKEND (data); priv = backend->priv; - g_return_if_fail (priv->loaded); - g_return_if_fail (cal != NULL); - g_return_if_fail (IS_CAL (cal)); + /* Find the cal in the list of clients */ - gtk_object_ref (GTK_OBJECT (cal)); - priv->clients = g_list_prepend (priv->clients, cal); + for (l = priv->clients; l; l = l->next) { + lcal = CAL (l->data); + + if (lcal == cal) + break; + } + + g_assert (l != NULL); + + /* Disconnect */ + + priv->clients = g_list_remove_link (priv->clients, l); + g_list_free_1 (l); + + /* When all clients go away, the backend can go away, too. Commit + * suicide here. + */ + + if (!priv->clients) + gtk_object_unref (GTK_OBJECT (backend)); } /** - * cal_backend_remove_cal: + * cal_backend_add_cal: * @backend: A calendar backend. * @cal: A calendar client interface object. - * - * Removes a calendar client interface object from a calendar backend. The - * calendar backend must already have a loaded calendar. + * + * Adds a calendar client interface object to a calendar @backend. The calendar + * backend must already have a loaded calendar. **/ void -cal_backend_remove_cal (CalBackend *backend, Cal *cal) +cal_backend_add_cal (CalBackend *backend, Cal *cal) { CalBackendPrivate *priv; - GList *l; g_return_if_fail (backend != NULL); g_return_if_fail (IS_CAL_BACKEND (backend)); @@ -413,13 +483,15 @@ cal_backend_remove_cal (CalBackend *backend, Cal *cal) g_return_if_fail (cal != NULL); g_return_if_fail (IS_CAL (cal)); - l = g_list_find (priv->clients, cal); - if (!l) - return; + /* We do not keep a reference to the Cal since the calendar user agent + * owns it. + */ + + gtk_signal_connect (GTK_OBJECT (cal), "destroy", + GTK_SIGNAL_FUNC (cal_destroy_cb), + backend); - gtk_object_unref (GTK_OBJECT (cal)); - priv->clients = g_list_remove_link (priv->clients, l); - g_list_free_1 (l); + priv->clients = g_list_prepend (priv->clients, cal); } /** @@ -441,11 +513,12 @@ cal_backend_load (CalBackend *backend, GnomeVFSURI *uri) g_return_val_if_fail (backend != NULL, CAL_BACKEND_LOAD_ERROR); g_return_val_if_fail (IS_CAL_BACKEND (backend), CAL_BACKEND_LOAD_ERROR); - g_return_val_if_fail (uri != NULL, CAL_BACKEND_LOAD_ERROR); priv = backend->priv; g_return_val_if_fail (!priv->loaded, CAL_BACKEND_LOAD_ERROR); + g_return_val_if_fail (uri != NULL, CAL_BACKEND_LOAD_ERROR); + /* FIXME: this looks rather bad; maybe we should check for local files * and fail if they are remote. */ @@ -475,13 +548,46 @@ cal_backend_load (CalBackend *backend, GnomeVFSURI *uri) } /** + * cal_backend_create: + * @backend: A calendar backend. + * @uri: URI that will contain the calendar data. + * + * Creates a new empty calendar in a calendar backend. + **/ +void +cal_backend_create (CalBackend *backend, GnomeVFSURI *uri) +{ + CalBackendPrivate *priv; + + g_return_if_fail (backend != NULL); + g_return_if_fail (IS_CAL_BACKEND (backend)); + + priv = backend->priv; + g_return_if_fail (!priv->loaded); + + g_return_if_fail (uri != NULL); + + /* Create the new calendar information */ + + g_assert (priv->object_hash == NULL); + priv->object_hash = g_hash_table_new (g_str_hash, g_str_equal); + + /* Done */ + + gnome_vfs_uri_ref (uri); + + priv->uri = uri; + priv->loaded = TRUE; +} + +/** * cal_backend_get_object: * @backend: A calendar backend. * @uid: Unique identifier for a calendar object. - * + * * Queries a calendar backend for a calendar object based on its unique * identifier. - * + * * Return value: The string representation of a complete calendar wrapping the * the sought object, or NULL if no object had the specified UID. A complete * calendar is returned because you also need the timezone data. @@ -560,10 +666,10 @@ build_uids_list (gpointer key, gpointer value, gpointer data) * 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 * @@ -639,11 +745,11 @@ compare_instance_func (gconstpointer a, gconstpointer b) * @backend: A calendar backend. * @start: Start time for query. * @end: End time for query. - * + * * Builds a sorted list of calendar event object instances that occur or recur * within the specified time range. Each object instance contains the object * itself and the start/end times at which it occurs or recurs. - * + * * Return value: A list of calendar event object instances, sorted by their * start times. **/ |