/* Evolution calendar - Alarm notification service object
*
* Copyright (C) 2001 Ximian, Inc.
*
* Author: Federico Mena-Quintero <federico@ximian.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <cal-client/cal-client.h>
#include "alarm-notify.h"
#include "alarm-queue.h"
#include "save.h"
#include "e-util/e-url.h"
/* A loaded client */
typedef struct {
/* The actual client */
CalClient *client;
/* The URI of the client in gnome-vfs's format. This *is* the key that
* is stored in the uri_client_hash hash table below.
*/
EUri *uri;
/* Number of times clients have requested this URI to be added to the
* alarm notification system.
*/
int refcount;
/* the ID of the retry timeout function
*/
int timeout_id;
} LoadedClient;
/* Private part of the AlarmNotify structure */
struct _AlarmNotifyPrivate {
/* Mapping from EUri's to LoadedClient structures */
GHashTable *uri_client_hash;
};
static void alarm_notify_class_init (AlarmNotifyClass *klass);
static void alarm_notify_init (AlarmNotify *an, AlarmNotifyClass *klass);
static void alarm_notify_finalize (GObject *object);
static void AlarmNotify_addCalendar (PortableServer_Servant servant,
const CORBA_char *str_uri,
CORBA_Environment *ev);
static void AlarmNotify_removeCalendar (PortableServer_Servant servant,
const CORBA_char *str_uri,
CORBA_Environment *ev);
static BonoboObjectClass *parent_class;
BONOBO_TYPE_FUNC_FULL (AlarmNotify,
GNOME_Evolution_Calendar_AlarmNotify,
BONOBO_TYPE_OBJECT,
alarm_notify);
/* Class initialization function for the alarm notify service */
static void
alarm_notify_class_init (AlarmNotifyClass *klass)
{
GObjectClass *object_class;
object_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
klass->epv.addCalendar = AlarmNotify_addCalendar;
klass->epv.removeCalendar = AlarmNotify_removeCalendar;
object_class->finalize = alarm_notify_finalize;
}
/* Object initialization function for the alarm notify system */
static void
alarm_notify_init (AlarmNotify *an, AlarmNotifyClass *klass)
{
AlarmNotifyPrivate *priv;
priv = g_new0 (AlarmNotifyPrivate, 1);
an->priv = priv;
priv->uri_client_hash = g_hash_table_new (g_str_hash, g_str_equal);
}
/* Callback used from g_hash-table_forach(), used to destroy a loade client */
static void
destroy_loaded_client_cb (gpointer key, gpointer value, gpointer data)
{
LoadedClient *lc;
char *str_uri;
str_uri = key;
lc = value;
g_free (str_uri);
g_object_unref (G_OBJECT (lc->client));
e_uri_free (lc->uri);
g_free (lc);
}
/* Finalize handler for the alarm notify system */
static void
alarm_notify_finalize (GObject *object)
{
AlarmNotify *an;
AlarmNotifyPrivate *priv;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_ALARM_NOTIFY (object));
an = ALARM_NOTIFY (object);
priv = an->priv;
g_hash_table_foreach (priv->uri_client_hash, destroy_loaded_client_cb, NULL);
g_hash_table_destroy (priv->uri_client_hash);
priv->uri_client_hash = NULL;
g_free (priv);
an->priv = NULL;
if (G_OBJECT_CLASS (parent_class)->finalize)
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
/* CORBA servant implementation */
/* Looks for a canonicalized URI inside an array of URIs; returns the index
* within the array or -1 if not found.
*/
static int
find_uri_index (GPtrArray *uris, const char *str_uri)
{
int i;
for (i = 0; i < uris->len; i++) {
char *uri;
uri = uris->pdata[i];
if (strcmp (uri, str_uri) == 0)
break;
}
if (i == uris->len)
return -1;
else
return i;
}
/* Frees an array of URIs and the URIs within it. */
static void
free_uris (GPtrArray *uris)
{
int i;
for (i = 0; i < uris->len; i++) {
char *uri;
uri = uris->pdata[i];
g_free (uri);
}
g_ptr_array_free (uris, TRUE);
}
/* Adds an URI to the list of calendars to load on startup */
static void
add_uri_to_load (EUri *uri)
{
char *str_uri;
GPtrArray *loaded_uris;
int i;
/* Canonicalize the URI */
str_uri = e_uri_to_string (uri, FALSE);
g_assert (str_uri != NULL);
loaded_uris = get_calendars_to_load ();
if (!loaded_uris) {
g_message ("add_uri_to_load(): Could not get the list of calendars to load; "
"will not add `%s'", str_uri);
g_free (str_uri);
return;
}
/* Look for the URI in the list of calendars to load */
i = find_uri_index (loaded_uris, str_uri);
/* We only need to add the URI if we didn't find it among the list of
* calendars.
*/
if (i != -1) {
g_free (str_uri);
free_uris (loaded_uris);
return;
}
g_ptr_array_add (loaded_uris, str_uri);
save_calendars_to_load (loaded_uris);
free_uris (loaded_uris);
}
/* Removes an URI from the list of calendars to load on startup */
static void
remove_uri_to_load (EUri *uri)
{
char *str_uri;
GPtrArray *loaded_uris;
char *loaded_uri;
int i;
/* Canonicalize the URI */
str_uri = e_uri_to_string (uri, FALSE);
g_assert (str_uri != NULL);
loaded_uris = get_calendars_to_load ();
if (!loaded_uris) {
g_message ("remove_uri_to_load(): Could not get the list of calendars to load; "
"will not add `%s'", str_uri);
g_free (str_uri);
return;
}
/* Look for the URI in the list of calendars to load */
i = find_uri_index (loaded_uris, str_uri);
g_free (str_uri);
/* If we didn't find it, there is no need to remove it */
if (i == -1) {
free_uris (loaded_uris);
return;
}
loaded_uri = loaded_uris->pdata[i];
g_free (loaded_uri);
g_ptr_array_remove_index (loaded_uris, i);
save_calendars_to_load (loaded_uris);
free_uris (loaded_uris);
}
/* AlarmNotify::addCalendar method */
static void
AlarmNotify_addCalendar (PortableServer_Servant servant,
const CORBA_char *str_uri,
CORBA_Environment *ev)
{
AlarmNotify *an;
an = ALARM_NOTIFY (bonobo_object_from_servant (servant));
alarm_notify_add_calendar (an, str_uri, TRUE, ev);
}
/* AlarmNotify::removeCalendar method */
static void
AlarmNotify_removeCalendar (PortableServer_Servant servant,
const CORBA_char *str_uri,
CORBA_Environment *ev)
{
AlarmNotify *an;
AlarmNotifyPrivate *priv;
LoadedClient *lc;
EUri *uri;
char *orig_str;
gpointer lc_ptr, orig_str_ptr;
gboolean found;
an = ALARM_NOTIFY (bonobo_object_from_servant (servant));
priv = an->priv;
uri = e_uri_new (str_uri);
if (!uri) {
CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
ex_GNOME_Evolution_Calendar_AlarmNotify_InvalidURI,
NULL);
return;
}
remove_uri_to_load (uri);
found = g_hash_table_lookup_extended (priv->uri_client_hash, str_uri,
&orig_str_ptr,
&lc_ptr);
orig_str = orig_str_ptr;
lc = lc_ptr;
e_uri_free (uri);
if (!lc) {
CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
ex_GNOME_Evolution_Calendar_AlarmNotify_NotFound,
NULL);
return;
}
g_assert (lc->refcount > 0);
lc->refcount--;
if (lc->refcount > 0)
return;
g_hash_table_remove (priv->uri_client_hash, str_uri);
g_free (orig_str);
g_signal_handlers_disconnect_matched (lc->client,
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, lc);
if (lc->timeout_id != -1)
g_source_remove (lc->timeout_id);
alarm_queue_remove_client (lc->client);
g_object_unref (G_OBJECT (lc->client));
e_uri_free (lc->uri);
g_free (lc);
}
/**
* alarm_notify_new:
*
* Creates a new #AlarmNotify object.
*
* Return value: A newly-created #AlarmNotify, or NULL if its corresponding
* CORBA object could not be created.
**/
AlarmNotify *
alarm_notify_new (void)
{
AlarmNotify *an;
an = g_object_new (TYPE_ALARM_NOTIFY, NULL);
return an;
}
static gboolean
retry_timeout_cb (gpointer data)
{
LoadedClient *lc = data;
char *str_uri;
if (cal_client_get_load_state (lc->client) != CAL_CLIENT_LOAD_LOADED) {
str_uri = e_uri_to_string (lc->uri, FALSE);
cal_client_open_calendar (lc->client, str_uri, FALSE);
g_free (str_uri);
}
return FALSE;
}
static void
cal_opened_cb (CalClient *client, CalClientOpenStatus status, gpointer data)
{
LoadedClient *lc = (LoadedClient *) data;
if (status == CAL_CLIENT_OPEN_SUCCESS) {
add_uri_to_load (lc->uri);
alarm_queue_add_client (client);
lc->timeout_id = -1;
}
else {
remove_uri_to_load (lc->uri);
/* we set a timeout of 5 mins before retrying */
lc->timeout_id = g_timeout_add (300000, (GSourceFunc) retry_timeout_cb, lc);
}
}
/**
* alarm_notify_add_calendar:
* @an: An alarm notification service.
* @uri: URI of the calendar to load.
* @load_afterwards: Whether this calendar should be loaded in the future
* when the alarm daemon starts up.
* @ev: CORBA environment for exceptions.
*
* Tells the alarm notification service to load a calendar and start monitoring
* its alarms. It can optionally be made to save the URI of this calendar so
* that it can be loaded in the future when the alarm daemon starts up.
**/
void
alarm_notify_add_calendar (AlarmNotify *an, const char *str_uri, gboolean load_afterwards,
CORBA_Environment *ev)
{
AlarmNotifyPrivate *priv;
EUri *uri;
CalClient *client;
LoadedClient *lc;
gpointer lc_ptr, s_ptr;
g_return_if_fail (an != NULL);
g_return_if_fail (IS_ALARM_NOTIFY (an));
g_return_if_fail (str_uri != NULL);
g_return_if_fail (ev != NULL);
priv = an->priv;
uri = e_uri_new (str_uri);
if (!uri) {
CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
ex_GNOME_Evolution_Calendar_AlarmNotify_InvalidURI,
NULL);
return;
}
if (g_hash_table_lookup_extended (priv->uri_client_hash, str_uri, &s_ptr, &lc_ptr)) {
lc = lc_ptr;
lc->refcount++;
} else {
client = cal_client_new ();
if (client) {
/* we only add the URI to load_afterwards if we open it
correctly */
lc = g_new (LoadedClient, 1);
g_signal_connect (G_OBJECT (client), "cal_opened",
G_CALLBACK (cal_opened_cb),
lc);
if (cal_client_open_calendar (client, str_uri, FALSE)) {
lc->client = client;
lc->uri = uri;
lc->refcount = 1;
lc->timeout_id = -1;
g_hash_table_insert (priv->uri_client_hash,
g_strdup (str_uri), lc);
} else {
g_free (lc);
g_object_unref (G_OBJECT (client));
client = NULL;
}
} else {
e_uri_free (uri);
CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
ex_GNOME_Evolution_Calendar_AlarmNotify_BackendContactError,
NULL);
return;
}
}
}
