/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* Evolution calendar client * * Copyright (C) 2000 Helix Code, Inc. * * Author: Federico Mena-Quintero * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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. */ #include #include #ifdef USING_OAF #include #else #include #endif #include "cal-client.h" #include "cal-listener.h" /* Loading state for the calendar client */ typedef enum { LOAD_STATE_NOT_LOADED, LOAD_STATE_LOADING, LOAD_STATE_LOADED } LoadState; /* Private part of the CalClient structure */ typedef struct { /* Load state to avoid multiple loads */ LoadState load_state; /* The calendar factory we are contacting */ Evolution_Calendar_CalFactory factory; /* Our calendar listener */ CalListener *listener; /* The calendar client interface object we are contacting */ Evolution_Calendar_Cal cal; } CalClientPrivate; /* Signal IDs */ enum { CAL_LOADED, OBJ_UPDATED, OBJ_REMOVED, LAST_SIGNAL }; static void cal_client_class_init (CalClientClass *class); static void cal_client_init (CalClient *client); static void cal_client_destroy (GtkObject *object); static guint cal_client_signals[LAST_SIGNAL]; static GtkObjectClass *parent_class; /** * cal_client_get_type: * @void: * * Registers the #CalClient class if necessary, and returns the type ID assigned * to it. * * Return value: The type ID of the #CalClient class. **/ GtkType cal_client_get_type (void) { static GtkType cal_client_type = 0; if (!cal_client_type) { static const GtkTypeInfo cal_client_info = { "CalClient", sizeof (CalClient), sizeof (CalClientClass), (GtkClassInitFunc) cal_client_class_init, (GtkObjectInitFunc) cal_client_init, NULL, /* reserved_1 */ NULL, /* reserved_2 */ (GtkClassInitFunc) NULL }; cal_client_type = gtk_type_unique (GTK_TYPE_OBJECT, &cal_client_info); } return cal_client_type; } /* Class initialization function for the calendar client */ static void cal_client_class_init (CalClientClass *class) { GtkObjectClass *object_class; object_class = (GtkObjectClass *) class; parent_class = gtk_type_class (GTK_TYPE_OBJECT); cal_client_signals[CAL_LOADED] = gtk_signal_new ("cal_loaded", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (CalClientClass, cal_loaded), gtk_marshal_NONE__ENUM, GTK_TYPE_NONE, 1, GTK_TYPE_ENUM); cal_client_signals[OBJ_UPDATED] = gtk_signal_new ("obj_updated", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (CalClientClass, obj_updated), gtk_marshal_NONE__STRING, GTK_TYPE_NONE, 1, GTK_TYPE_STRING); cal_client_signals[OBJ_REMOVED] = gtk_signal_new ("obj_removed", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (CalClientClass, obj_removed), gtk_marshal_NONE__STRING, GTK_TYPE_NONE, 1, GTK_TYPE_STRING); gtk_object_class_add_signals (object_class, cal_client_signals, LAST_SIGNAL); object_class->destroy = cal_client_destroy; } /* Object initialization function for the calendar client */ static void cal_client_init (CalClient *client) { CalClientPrivate *priv; priv = g_new0 (CalClientPrivate, 1); client->priv = priv; priv->factory = CORBA_OBJECT_NIL; priv->load_state = LOAD_STATE_NOT_LOADED; } /* Gets rid of the factory that a client knows about */ static void destroy_factory (CalClient *client) { CalClientPrivate *priv; CORBA_Environment ev; int result; priv = client->priv; CORBA_exception_init (&ev); result = CORBA_Object_is_nil (priv->factory, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("destroy_factory(): could not see if the factory was nil"); priv->factory = CORBA_OBJECT_NIL; CORBA_exception_free (&ev); return; } CORBA_exception_free (&ev); if (result) return; CORBA_exception_init (&ev); CORBA_Object_release (priv->factory, &ev); if (ev._major != CORBA_NO_EXCEPTION) g_message ("destroy_factory(): could not release the factory"); CORBA_exception_free (&ev); priv->factory = CORBA_OBJECT_NIL; } /* Gets rid of the listener that a client knows about */ static void destroy_listener (CalClient *client) { CalClientPrivate *priv; priv = client->priv; if (!priv->listener) return; bonobo_object_unref (BONOBO_OBJECT (priv->listener)); priv->listener = NULL; } /* Gets rid of the calendar client interface object that a client knows about */ static void destroy_cal (CalClient *client) { CalClientPrivate *priv; CORBA_Environment ev; int result; priv = client->priv; CORBA_exception_init (&ev); result = CORBA_Object_is_nil (priv->cal, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("destroy_cal(): could not see if the " "calendar client interface object was nil"); priv->cal = CORBA_OBJECT_NIL; CORBA_exception_free (&ev); return; } CORBA_exception_free (&ev); if (result) return; CORBA_exception_init (&ev); Evolution_Calendar_Cal_unref (priv->cal, &ev); if (ev._major != CORBA_NO_EXCEPTION) g_message ("destroy_cal(): could not unref the calendar client interface object"); CORBA_exception_free (&ev); CORBA_exception_init (&ev); CORBA_Object_release (priv->cal, &ev); if (ev._major != CORBA_NO_EXCEPTION) g_message ("destroy_cal(): could not release the calendar client interface object"); CORBA_exception_free (&ev); priv->cal = CORBA_OBJECT_NIL; } /* Destroy handler for the calendar client */ static void cal_client_destroy (GtkObject *object) { CalClient *client; CalClientPrivate *priv; g_return_if_fail (object != NULL); g_return_if_fail (IS_CAL_CLIENT (object)); client = CAL_CLIENT (object); priv = client->priv; destroy_factory (client); destroy_listener (client); destroy_cal (client); priv->load_state = LOAD_STATE_NOT_LOADED; g_free (priv); client->priv = NULL; if (GTK_OBJECT_CLASS (parent_class)->destroy) (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); } /* Signal handlers for the listener's signals */ /* Handle the cal_loaded signal from the listener */ static void cal_loaded_cb (CalListener *listener, Evolution_Calendar_Listener_LoadStatus status, Evolution_Calendar_Cal cal, gpointer data) { CalClient *client; CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_Cal cal_copy; CalClientLoadStatus client_status; client = CAL_CLIENT (data); priv = client->priv; g_assert (priv->load_state == LOAD_STATE_LOADING); client_status = CAL_CLIENT_LOAD_ERROR; switch (status) { case Evolution_Calendar_Listener_SUCCESS: CORBA_exception_init (&ev); cal_copy = CORBA_Object_duplicate (cal, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_loaded(): could not duplicate the calendar client interface"); CORBA_exception_free (&ev); goto error; } CORBA_exception_free (&ev); priv->cal = cal_copy; priv->load_state = LOAD_STATE_LOADED; client_status = CAL_CLIENT_LOAD_SUCCESS; goto out; case Evolution_Calendar_Listener_ERROR: client_status = CAL_CLIENT_LOAD_ERROR; goto error; case Evolution_Calendar_Listener_IN_USE: client_status = CAL_CLIENT_LOAD_IN_USE; goto error; case Evolution_Calendar_Listener_METHOD_NOT_SUPPORTED: client_status = CAL_CLIENT_LOAD_METHOD_NOT_SUPPORTED; goto error; default: g_assert_not_reached (); } error: bonobo_object_unref (BONOBO_OBJECT (priv->listener)); priv->listener = NULL; priv->load_state = LOAD_STATE_NOT_LOADED; out: g_assert (priv->load_state != LOAD_STATE_LOADING); gtk_signal_emit (GTK_OBJECT (client), cal_client_signals[CAL_LOADED], client_status); } /* Handle the obj_updated signal from the listener */ static void obj_updated_cb (CalListener *listener, const Evolution_Calendar_CalObjUID uid, gpointer data) { CalClient *client; client = CAL_CLIENT (data); gtk_signal_emit (GTK_OBJECT (client), cal_client_signals[OBJ_UPDATED], uid); } /* Handle the obj_removed signal from the listener */ static void obj_removed_cb (CalListener *listener, const Evolution_Calendar_CalObjUID uid, gpointer data) { CalClient *client; client = CAL_CLIENT (data); gtk_signal_emit (GTK_OBJECT (client), cal_client_signals[OBJ_REMOVED], uid); } /** * cal_client_construct: * @client: A calendar client. * * Constructs a calendar client object by contacting the calendar factory of the * calendar server. * * Return value: The same object as the @client argument, or NULL if the * calendar factory could not be contacted. **/ CalClient * cal_client_construct (CalClient *client) { CalClientPrivate *priv; Evolution_Calendar_CalFactory factory, factory_copy; CORBA_Environment ev; int result; CORBA_exception_init (&ev); g_return_val_if_fail (client != NULL, NULL); g_return_val_if_fail (IS_CAL_CLIENT (client), NULL); priv = client->priv; #ifdef USING_OAF factory = (Evolution_Calendar_CalFactory) oaf_activate_from_id ( "OAFIID:evolution:calendar-factory:1c915858-ece3-4a6f-9d81-ea0f108a9554", OAF_FLAG_NO_LOCAL, NULL, &ev); #else factory = (Evolution_Calendar_CalFactory) goad_server_activate_with_id ( NULL, "evolution:calendar-factory", GOAD_ACTIVATE_REMOTE, NULL); #endif result = CORBA_Object_is_nil (factory, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_construct(): could not see if the factory is NIL"); CORBA_exception_free (&ev); return NULL; } CORBA_exception_free (&ev); if (result) { g_message ("cal_client_construct(): could not contact Wombat, " "the personal calendar server"); return NULL; } CORBA_exception_init (&ev); factory_copy = CORBA_Object_duplicate (factory, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_construct(): could not duplicate the calendar factory"); CORBA_exception_free (&ev); return NULL; } CORBA_exception_free (&ev); priv->factory = factory_copy; return client; } /** * cal_client_new: * * Creates a new calendar client. It should be initialized by calling * cal_client_load_calendar() or cal_client_create_calendar(). * * Return value: A newly-created calendar client, or NULL if the client could * not be constructed because it could not contact the calendar server. **/ CalClient * cal_client_new (void) { CalClient *client; client = gtk_type_new (CAL_CLIENT_TYPE); if (!cal_client_construct (client)) { g_message ("cal_client_new(): could not construct the calendar client"); gtk_object_unref (GTK_OBJECT (client)); return NULL; } return client; } /* Issues a load or create request */ static gboolean load_or_create (CalClient *client, const char *str_uri, gboolean load) { CalClientPrivate *priv; Evolution_Calendar_Listener corba_listener; CORBA_Environment ev; g_return_val_if_fail (client != NULL, FALSE); g_return_val_if_fail (IS_CAL_CLIENT (client), FALSE); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_NOT_LOADED, FALSE); g_return_val_if_fail (str_uri != NULL, FALSE); priv->listener = cal_listener_new (); if (!priv->listener) { g_message ("load_or_create(): could not create the listener"); return FALSE; } gtk_signal_connect (GTK_OBJECT (priv->listener), "cal_loaded", GTK_SIGNAL_FUNC (cal_loaded_cb), client); gtk_signal_connect (GTK_OBJECT (priv->listener), "obj_updated", GTK_SIGNAL_FUNC (obj_updated_cb), client); gtk_signal_connect (GTK_OBJECT (priv->listener), "obj_removed", GTK_SIGNAL_FUNC (obj_removed_cb), client); corba_listener = (Evolution_Calendar_Listener) bonobo_object_corba_objref ( BONOBO_OBJECT (priv->listener)); CORBA_exception_init (&ev); priv->load_state = LOAD_STATE_LOADING; if (load) Evolution_Calendar_CalFactory_load (priv->factory, str_uri, corba_listener, &ev); else Evolution_Calendar_CalFactory_create (priv->factory, str_uri, corba_listener, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("load_or_create(): load/create request failed"); bonobo_object_unref (BONOBO_OBJECT (priv->listener)); priv->listener = NULL; priv->load_state = LOAD_STATE_NOT_LOADED; CORBA_exception_free (&ev); return FALSE; } CORBA_exception_free (&ev); return TRUE; } /** * cal_client_load_calendar: * @client: A calendar client. * @str_uri: URI of calendar to load. * * Makes a calendar client initiate a request to load a calendar. The calendar * client will emit the "cal_loaded" signal when the response from the server is * received. * * Return value: TRUE on success, FALSE on failure to issue the load request. **/ gboolean cal_client_load_calendar (CalClient *client, const char *str_uri) { return load_or_create (client, str_uri, TRUE); } /** * cal_client_create_calendar: * @client: A calendar client. * @str_uri: URI that will contain the calendar data. * * Makes a calendar client initiate a request to create a new calendar. The * calendar client will emit the "cal_loaded" signal when the response from the * server is received. * * Return value: TRUE on success, FALSE on failure to issue the create request. **/ gboolean cal_client_create_calendar (CalClient *client, const char *str_uri) { return load_or_create (client, str_uri, FALSE); } /* Converts our representation of a calendar component type into its CORBA representation */ static Evolution_Calendar_CalObjType corba_obj_type (CalObjType type) { return (((type & CALOBJ_TYPE_EVENT) ? Evolution_Calendar_TYPE_EVENT : 0) | ((type & CALOBJ_TYPE_TODO) ? Evolution_Calendar_TYPE_TODO : 0) | ((type & CALOBJ_TYPE_JOURNAL) ? Evolution_Calendar_TYPE_JOURNAL : 0)); } /** * cal_client_get_n_objects: * @client: A calendar client. * @type: Type of objects that will be counted. * * Counts the number of calendar components of the specified @type. This can be * used to count how many events, to-dos, or journals there are, for example. * * Return value: Number of components. **/ int cal_client_get_n_objects (CalClient *client, CalObjType type) { CalClientPrivate *priv; CORBA_Environment ev; int n; int t; g_return_val_if_fail (client != NULL, -1); g_return_val_if_fail (IS_CAL_CLIENT (client), -1); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, -1); t = corba_obj_type (type); CORBA_exception_init (&ev); n = Evolution_Calendar_Cal_get_n_objects (priv->cal, t, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_n_objects(): could not get the number of objects"); CORBA_exception_free (&ev); return -1; } CORBA_exception_free (&ev); return n; } /** * cal_client_get_object: * @client: A calendar client. * @uid: Unique identifier for a calendar component. * @comp: Return value for the calendar component object. * * Queries a calendar for a calendar component object based on its unique * identifier. * * Return value: Result code based on the status of the operation. **/ CalClientGetStatus cal_client_get_object (CalClient *client, const char *uid, CalComponent **comp) { CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_CalObj calobj_str; CalClientGetStatus retval; icalcomponent *icalcomp; g_return_val_if_fail (client != NULL, CAL_CLIENT_GET_NOT_FOUND); g_return_val_if_fail (IS_CAL_CLIENT (client), CAL_CLIENT_GET_NOT_FOUND); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, CAL_CLIENT_GET_NOT_FOUND); g_return_val_if_fail (uid != NULL, CAL_CLIENT_GET_NOT_FOUND); g_return_val_if_fail (comp != NULL, CAL_CLIENT_GET_NOT_FOUND); retval = CAL_CLIENT_GET_NOT_FOUND; *comp = NULL; CORBA_exception_init (&ev); calobj_str = Evolution_Calendar_Cal_get_object (priv->cal, (char *) uid, &ev); if (ev._major == CORBA_USER_EXCEPTION && strcmp (CORBA_exception_id (&ev), ex_Evolution_Calendar_Cal_NotFound) == 0) goto out; else if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_object(): could not get the object"); goto out; } icalcomp = icalparser_parse_string (calobj_str); CORBA_free (calobj_str); if (!icalcomp) { retval = CAL_CLIENT_GET_SYNTAX_ERROR; goto out; } *comp = cal_component_new (); if (!cal_component_set_icalcomponent (*comp, icalcomp)) { icalcomponent_free (icalcomp); gtk_object_unref (GTK_OBJECT (*comp)); *comp = NULL; retval = CAL_CLIENT_GET_SYNTAX_ERROR; goto out; } retval = CAL_CLIENT_GET_SUCCESS; out: CORBA_exception_free (&ev); return retval; } CalClientGetStatus cal_client_get_uid_by_pilot_id (CalClient *client, unsigned long pilot_id, char **uid) { CalClientPrivate *priv; CORBA_Environment ev; CalClientGetStatus retval; char *uid_str; g_return_val_if_fail (client != NULL, CAL_CLIENT_GET_NOT_FOUND); g_return_val_if_fail (IS_CAL_CLIENT (client), CAL_CLIENT_GET_NOT_FOUND); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, CAL_CLIENT_GET_NOT_FOUND); retval = CAL_CLIENT_GET_NOT_FOUND; *uid = NULL; CORBA_exception_init (&ev); uid_str = Evolution_Calendar_Cal_get_uid_by_pilot_id (priv->cal, pilot_id, &ev); if (ev._major == CORBA_USER_EXCEPTION && strcmp (CORBA_exception_id (&ev), ex_Evolution_Calendar_Cal_NotFound) == 0) goto out; else if (ev._major != CORBA_NO_EXCEPTION) { //g_message ("cal_client_get_object(): could not get the object"); goto out; } if (uid_str) { retval = CAL_CLIENT_GET_SUCCESS; (*uid) = g_strdup (uid_str); CORBA_free (uid_str); } out: CORBA_exception_free (&ev); return retval; } void cal_client_update_pilot_id (CalClient *client, char *uid, unsigned long pilot_id, unsigned long pilot_status) { CalClientPrivate *priv; CORBA_Environment ev; g_return_if_fail (client != NULL); g_return_if_fail (IS_CAL_CLIENT (client)); priv = client->priv; g_return_if_fail (priv->load_state == LOAD_STATE_LOADED); CORBA_exception_init (&ev); Evolution_Calendar_Cal_update_pilot_id (priv->cal, uid, pilot_id, pilot_status, &ev); CORBA_exception_free (&ev); } /* Builds an UID list out of a CORBA UID sequence */ static GList * build_uid_list (Evolution_Calendar_CalObjUIDSeq *seq) { GList *uids; int i; uids = NULL; for (i = 0; i < seq->_length; i++) uids = g_list_prepend (uids, g_strdup (seq->_buffer[i])); return uids; } /** * cal_client_get_uids: * @client: A calendar client. * @type: Bitmask with types of objects to return. * * Queries a calendar for 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_client_get_uids (CalClient *client, CalObjType type) { CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_CalObjUIDSeq *seq; int t; GList *uids; g_return_val_if_fail (client != NULL, NULL); g_return_val_if_fail (IS_CAL_CLIENT (client), NULL); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, NULL); t = corba_obj_type (type); CORBA_exception_init (&ev); seq = Evolution_Calendar_Cal_get_uids (priv->cal, t, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_uids(): could not get the list of UIDs"); CORBA_exception_free (&ev); return NULL; } CORBA_exception_free (&ev); uids = build_uid_list (seq); CORBA_free (seq); return uids; } /* FIXME: Not used? */ #if 0 /* Builds a GList of CalObjInstance structures from the CORBA sequence */ static GList * build_object_instance_list (Evolution_Calendar_CalObjInstanceSeq *seq) { GList *list; int i; /* Create the list in reverse order */ list = NULL; for (i = 0; i < seq->_length; i++) { Evolution_Calendar_CalObjInstance *corba_icoi; CalObjInstance *icoi; corba_icoi = &seq->_buffer[i]; icoi = g_new (CalObjInstance, 1); icoi->uid = g_strdup (corba_icoi->uid); icoi->start = corba_icoi->start; icoi->end = corba_icoi->end; list = g_list_prepend (list, icoi); } list = g_list_reverse (list); return list; } #endif /** * cal_client_get_objects_in_range: * @client: A calendar client. * @type: Bitmask with types of objects to return. * @start: Start time for query. * @end: End time for query. * * Queries a calendar for the objects that occur or recur in the specified range * of time. * * Return value: A list of UID strings. This should be freed using the * cal_obj_uid_list_free() function. **/ GList * cal_client_get_objects_in_range (CalClient *client, CalObjType type, time_t start, time_t end) { CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_CalObjUIDSeq *seq; GList *uids; int t; g_return_val_if_fail (client != NULL, NULL); g_return_val_if_fail (IS_CAL_CLIENT (client), NULL); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, NULL); g_return_val_if_fail (start != -1 && end != -1, NULL); g_return_val_if_fail (start <= end, NULL); CORBA_exception_init (&ev); t = corba_obj_type (type); seq = Evolution_Calendar_Cal_get_objects_in_range (priv->cal, t, start, end, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_objects_in_range(): could not get the objects"); CORBA_exception_free (&ev); return NULL; } CORBA_exception_free (&ev); uids = build_uid_list (seq); CORBA_free (seq); return uids; } /* Callback used when an object is updated and we must update the copy we have */ static void generate_instances_obj_updated_cb (CalClient *client, const char *uid, gpointer data) { GHashTable *uid_comp_hash; CalComponent *comp; CalClientGetStatus status; const char *comp_uid; uid_comp_hash = data; comp = g_hash_table_lookup (uid_comp_hash, uid); if (!comp) /* OK, so we don't care about new objects that may indeed be in * the requested time range. We only care about the ones that * were returned by the first query to * cal_client_get_objects_in_range(). */ return; g_hash_table_remove (uid_comp_hash, uid); gtk_object_unref (GTK_OBJECT (comp)); status = cal_client_get_object (client, uid, &comp); switch (status) { case CAL_CLIENT_GET_SUCCESS: /* The hash key comes from the component's internal data */ cal_component_get_uid (comp, &comp_uid); g_hash_table_insert (uid_comp_hash, (char *) comp_uid, comp); break; case CAL_CLIENT_GET_NOT_FOUND: /* No longer in the server, too bad */ break; case CAL_CLIENT_GET_SYNTAX_ERROR: g_message ("obj_updated_cb(): Syntax error when getting " "object `%s'; ignoring...", uid); break; } } /* Callback used when an object is removed and we must delete the copy we have */ static void generate_instances_obj_removed_cb (CalClient *client, const char *uid, gpointer data) { GHashTable *uid_comp_hash; CalComponent *comp; uid_comp_hash = data; comp = g_hash_table_lookup (uid_comp_hash, uid); if (!comp) return; g_hash_table_remove (uid_comp_hash, uid); gtk_object_unref (GTK_OBJECT (comp)); } /* Adds a component to the list; called from g_hash_table_foreach() */ static void add_component (gpointer key, gpointer value, gpointer data) { CalComponent *comp; GList **list; comp = CAL_COMPONENT (value); list = data; *list = g_list_prepend (*list, comp); } /* Gets a list of components that recur within the specified range of time. It * ensures that the resulting list of CalComponent objects contains only objects * that are actually in the server at the time the initial * cal_client_get_objects_in_range() query ends. */ static GList * get_objects_atomically (CalClient *client, CalObjType type, time_t start, time_t end) { GList *uids; GHashTable *uid_comp_hash; GList *objects; guint obj_updated_id; guint obj_removed_id; GList *l; uids = cal_client_get_objects_in_range (client, type, start, end); uid_comp_hash = g_hash_table_new (g_str_hash, g_str_equal); /* While we are getting the actual object data, keep track of changes */ obj_updated_id = gtk_signal_connect (GTK_OBJECT (client), "obj_updated", GTK_SIGNAL_FUNC (generate_instances_obj_updated_cb), uid_comp_hash); obj_removed_id = gtk_signal_connect (GTK_OBJECT (client), "obj_removed", GTK_SIGNAL_FUNC (generate_instances_obj_removed_cb), uid_comp_hash); /* Get the objects */ for (l = uids; l; l = l->next) { CalComponent *comp; CalClientGetStatus status; char *uid; const char *comp_uid; uid = l->data; status = cal_client_get_object (client, uid, &comp); switch (status) { case CAL_CLIENT_GET_SUCCESS: /* The hash key comes from the component's internal data * instead of the duped UID from the list of UIDS. */ cal_component_get_uid (comp, &comp_uid); g_hash_table_insert (uid_comp_hash, (char *) comp_uid, comp); break; case CAL_CLIENT_GET_NOT_FOUND: /* Object disappeared from the server, so don't log it */ break; case CAL_CLIENT_GET_SYNTAX_ERROR: g_message ("get_objects_atomically(): Syntax error when getting " "object `%s'; ignoring...", uid); break; default: g_assert_not_reached (); } } cal_obj_uid_list_free (uids); /* Now our state is consistent with the server, so disconnect from the * notification signals and generate the final list of components. */ gtk_signal_disconnect (GTK_OBJECT (client), obj_updated_id); gtk_signal_disconnect (GTK_OBJECT (client), obj_removed_id); objects = NULL; g_hash_table_foreach (uid_comp_hash, add_component, &objects); g_hash_table_destroy (uid_comp_hash); return objects; } struct comp_instance { CalComponent *comp; time_t start; time_t end; }; /* Called from cal_recur_generate_instances(); adds an instance to the list */ static gboolean add_instance (CalComponent *comp, time_t start, time_t end, gpointer data) { GList **list; struct comp_instance *ci; list = data; ci = g_new (struct comp_instance, 1); ci->comp = comp; gtk_object_ref (GTK_OBJECT (ci->comp)); ci->start = start; ci->end = end; return TRUE; } /* Used from g_list_sort(); compares two struct comp_instance structures */ static gint compare_comp_instance (gconstpointer a, gconstpointer b) { const struct comp_instance *cia, *cib; time_t diff; cia = a; cib = b; diff = cia->start - cib->start; return (diff < 0) ? -1 : (diff > 0) ? 1 : 0; } /** * cal_client_generate_instances: * @client: A calendar client. * @type: Bitmask with types of objects to return. * @start: Start time for query. * @end: End time for query. * @cb: Callback for each generated instance. * @cb_data: Closure data for the callback. * * Does a combination of cal_client_get_objects_in_range() and * cal_recur_generate_instances(). It fetches the list of objects in an atomic * way so that the generated instances are actually in the server at the time * the initial cal_client_get_objects_in_range() query ends. * * The callback function should do a gtk_object_ref() of the calendar component * it gets passed if it intends to keep it around. **/ void cal_client_generate_instances (CalClient *client, CalObjType type, time_t start, time_t end, CalRecurInstanceFn cb, gpointer cb_data) { CalClientPrivate *priv; GList *objects; GList *instances; GList *l; g_return_if_fail (client != NULL); g_return_if_fail (IS_CAL_CLIENT (client)); priv = client->priv; g_return_if_fail (priv->load_state == LOAD_STATE_LOADED); g_return_if_fail (start != -1 && end != -1); g_return_if_fail (start <= end); g_return_if_fail (cb != NULL); /* Generate objects */ objects = get_objects_atomically (client, type, start, end); instances = NULL; for (l = objects; l; l = l->next) { CalComponent *comp; comp = l->data; cal_recur_generate_instances (comp, start, end, add_instance, &instances); } g_list_free (objects); /* Generate instances and spew them out */ instances = g_list_sort (instances, compare_comp_instance); for (l = instances; l; l = l->next) { struct comp_instance *ci; gboolean result; ci = l->data; result = (* cb) (ci->comp, ci->start, ci->end, cb_data); if (!result) break; } /* Clean up */ for (l = instances; l; l = l->next) { struct comp_instance *ci; ci = l->data; gtk_object_unref (GTK_OBJECT (ci->comp)); g_free (ci); } g_list_free (instances); } #if 0 /* Translates the CORBA representation of an AlarmType */ static enum AlarmType uncorba_alarm_type (Evolution_Calendar_AlarmType corba_type) { switch (corba_type) { case Evolution_Calendar_MAIL: return ALARM_MAIL; case Evolution_Calendar_PROGRAM: return ALARM_PROGRAM; case Evolution_Calendar_DISPLAY: return ALARM_DISPLAY; case Evolution_Calendar_AUDIO: return ALARM_AUDIO; default: g_assert_not_reached (); return ALARM_DISPLAY; } } #endif /* Builds a GList of CalAlarmInstance structures from the CORBA sequence */ static GList * build_alarm_instance_list (Evolution_Calendar_CalAlarmInstanceSeq *seq) { GList *list; int i; /* Create the list in reverse order */ list = NULL; for (i = 0; i < seq->_length; i++) { Evolution_Calendar_CalAlarmInstance *corba_ai; CalAlarmInstance *ai; corba_ai = &seq->_buffer[i]; ai = g_new (CalAlarmInstance, 1); ai->uid = g_strdup (corba_ai->uid); #if 0 ai->type = uncorba_alarm_type (corba_ai->type); #endif ai->trigger = corba_ai->trigger; ai->occur = corba_ai->occur; list = g_list_prepend (list, ai); } list = g_list_reverse (list); return list; } /** * cal_client_get_alarms_in_range: * @client: A calendar client. * @start: Start time for query. * @end: End time for query. * * Queries a calendar for the alarms that trigger in the specified range of * time. * * Return value: A list of #CalAlarmInstance structures. **/ GList * cal_client_get_alarms_in_range (CalClient *client, time_t start, time_t end) { CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_CalAlarmInstanceSeq *seq; GList *alarms; g_return_val_if_fail (client != NULL, NULL); g_return_val_if_fail (IS_CAL_CLIENT (client), NULL); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, NULL); g_return_val_if_fail (start != -1 && end != -1, NULL); g_return_val_if_fail (start <= end, NULL); CORBA_exception_init (&ev); seq = Evolution_Calendar_Cal_get_alarms_in_range (priv->cal, start, end, &ev); if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_alarms_in_range(): could not get the alarm range"); CORBA_exception_free (&ev); return NULL; } CORBA_exception_free (&ev); alarms = build_alarm_instance_list (seq); CORBA_free (seq); return alarms; } /** * cal_client_get_alarms_for_object: * @client: A calendar client. * @uid: Unique identifier for a calendar object. * @start: Start time for query. * @end: End time for query. * @alarms: Return value for the list of alarm instances. * * Queries a calendar for the alarms of a particular object that trigger in the * specified range of time. * * Return value: TRUE on success, FALSE if the object was not found. **/ gboolean cal_client_get_alarms_for_object (CalClient *client, const char *uid, time_t start, time_t end, GList **alarms) { CalClientPrivate *priv; CORBA_Environment ev; Evolution_Calendar_CalAlarmInstanceSeq *seq; gboolean retval; g_return_val_if_fail (client != NULL, FALSE); g_return_val_if_fail (IS_CAL_CLIENT (client), FALSE); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, FALSE); g_return_val_if_fail (uid != NULL, FALSE); g_return_val_if_fail (start != -1 && end != -1, FALSE); g_return_val_if_fail (start <= end, FALSE); g_return_val_if_fail (alarms != NULL, FALSE); *alarms = NULL; retval = FALSE; CORBA_exception_init (&ev); seq = Evolution_Calendar_Cal_get_alarms_for_object (priv->cal, (char *) uid, start, end, &ev); if (ev._major == CORBA_USER_EXCEPTION && strcmp (CORBA_exception_id (&ev), ex_Evolution_Calendar_Cal_NotFound) == 0) goto out; else if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_get_alarms_for_object(): could not get the alarm range"); goto out; } retval = TRUE; *alarms = build_alarm_instance_list (seq); CORBA_free (seq); out: CORBA_exception_free (&ev); return retval; } /** * cal_client_update_object: * @client: A calendar client. * @comp: A calendar component object. * * Asks a calendar to update a component. Any existing component with the * specified component's UID will be replaced. The client program should not * assume that the object is actually in the server's storage until it has * received the "obj_updated" notification signal. * * Return value: TRUE on success, FALSE on specifying an invalid component. **/ gboolean cal_client_update_object (CalClient *client, CalComponent *comp) { CalClientPrivate *priv; CORBA_Environment ev; gboolean retval; char *obj_string; const char *uid; g_return_val_if_fail (client != NULL, FALSE); g_return_val_if_fail (IS_CAL_CLIENT (client), FALSE); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, FALSE); g_return_val_if_fail (comp != NULL, FALSE); retval = FALSE; cal_component_commit_sequence (comp); obj_string = cal_component_get_as_string (comp); cal_component_get_uid (comp, &uid); CORBA_exception_init (&ev); Evolution_Calendar_Cal_update_object (priv->cal, (char *) uid, obj_string, &ev); g_free (obj_string); if (ev._major == CORBA_USER_EXCEPTION && strcmp (CORBA_exception_id (&ev), ex_Evolution_Calendar_Cal_InvalidObject) == 0) goto out; else if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_update_object(): could not update the object"); goto out; } retval = TRUE; out: CORBA_exception_free (&ev); return retval; } gboolean cal_client_remove_object (CalClient *client, const char *uid) { CalClientPrivate *priv; CORBA_Environment ev; gboolean retval; g_return_val_if_fail (client != NULL, FALSE); g_return_val_if_fail (IS_CAL_CLIENT (client), FALSE); priv = client->priv; g_return_val_if_fail (priv->load_state == LOAD_STATE_LOADED, FALSE); g_return_val_if_fail (uid != NULL, FALSE); retval = FALSE; CORBA_exception_init (&ev); Evolution_Calendar_Cal_remove_object (priv->cal, (char *) uid, &ev); if (ev._major == CORBA_USER_EXCEPTION && strcmp (CORBA_exception_id (&ev), ex_Evolution_Calendar_Cal_NotFound) == 0) goto out; else if (ev._major != CORBA_NO_EXCEPTION) { g_message ("cal_client_remove_object(): could not remove the object"); goto out; } retval = TRUE; out: CORBA_exception_free (&ev); return retval; }