/* Evolution calendar - Live query client 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 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtksignal.h>
#include "cal-query.h"
#include "query-listener.h"
/* Private part of the CalQuery structure */
struct _CalQueryPrivate {
/* Our query listener implementation */
QueryListener *ql;
/* Handle to the query in the server */
GNOME_Evolution_Calendar_Query corba_query;
};
static void cal_query_class_init (CalQueryClass *class);
static void cal_query_init (CalQuery *query);
static void cal_query_destroy (GtkObject *object);
/* Signal IDs */
enum {
OBJ_UPDATED,
OBJ_REMOVED,
QUERY_DONE,
EVAL_ERROR,
LAST_SIGNAL
};
static void marshal_obj_updated (GtkObject *object,
GtkSignalFunc func, gpointer func_data,
GtkArg *args);
static void marshal_query_done (GtkObject *object,
GtkSignalFunc func, gpointer func_data,
GtkArg *args);
static guint query_signals[LAST_SIGNAL];
static GtkObjectClass *parent_class;
/**
* cal_query_get_type:
*
* Registers the #CalQuery class if necessary, and returns the type ID assigned
* to it.
*
* Return value: The type ID of the #CalQuery class.
**/
GtkType
cal_query_get_type (void)
{
static GtkType cal_query_type = 0;
if (!cal_query_type) {
static const GtkTypeInfo cal_query_info = {
"CalQuery",
sizeof (CalQuery),
sizeof (CalQueryClass),
(GtkClassInitFunc) cal_query_class_init,
(GtkObjectInitFunc) cal_query_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
cal_query_type = gtk_type_unique (GTK_TYPE_OBJECT, &cal_query_info);
}
return cal_query_type;
}
/* Class initialization function for the calendar query */
static void
cal_query_class_init (CalQueryClass *class)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass *) class;
parent_class = gtk_type_class (GTK_TYPE_OBJECT);
query_signals[OBJ_UPDATED] =
gtk_signal_new ("obj_updated",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (CalQueryClass, obj_updated),
marshal_obj_updated,
GTK_TYPE_NONE, 4,
GTK_TYPE_STRING,
GTK_TYPE_BOOL,
GTK_TYPE_INT,
GTK_TYPE_INT);
query_signals[OBJ_REMOVED] =
gtk_signal_new ("obj_removed",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (CalQueryClass, obj_removed),
gtk_marshal_NONE__STRING,
GTK_TYPE_NONE, 1,
GTK_TYPE_STRING);
query_signals[QUERY_DONE] =
gtk_signal_new ("query_done",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (CalQueryClass, query_done),
marshal_query_done,
GTK_TYPE_NONE, 2,
GTK_TYPE_ENUM,
GTK_TYPE_STRING);
query_signals[EVAL_ERROR] =
gtk_signal_new ("eval_error",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (CalQueryClass, eval_error),
gtk_marshal_NONE__STRING,
GTK_TYPE_NONE, 1,
GTK_TYPE_STRING);
gtk_object_class_add_signals (object_class, query_signals, LAST_SIGNAL);
class->obj_updated = NULL;
class->obj_removed = NULL;
class->query_done = NULL;
class->eval_error = NULL;
object_class->destroy = cal_query_destroy;
}
/* Object initialization function for the calendar query */
static void
cal_query_init (CalQuery *query)
{
CalQueryPrivate *priv;
priv = g_new0 (CalQueryPrivate, 1);
query->priv = priv;
priv->ql = NULL;
priv->corba_query = CORBA_OBJECT_NIL;
}
/* Destroy handler for the calendar query */
static void
cal_query_destroy (GtkObject *object)
{
CalQuery *query;
CalQueryPrivate *priv;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_CAL_QUERY (object));
query = CAL_QUERY (object);
priv = query->priv;
/* The server unrefs the query listener, so we just NULL it out here */
query_listener_stop_notification (priv->ql);
priv->ql = NULL;
if (priv->corba_query != CORBA_OBJECT_NIL) {
CORBA_Environment ev;
CORBA_exception_init (&ev);
bonobo_object_release_unref (priv->corba_query, &ev);
if (ev._major != CORBA_NO_EXCEPTION)
g_message ("cal_query_destroy(): Could not release/unref the query");
CORBA_exception_free (&ev);
priv->corba_query = CORBA_OBJECT_NIL;
}
g_free (priv);
query->priv = NULL;
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
/* Marshalers */
typedef void (* ObjUpdatedFunc) (CalQuery *query, const char *uid,
gboolean query_in_progress, int n_scanned, int total,
gpointer data);
static void
marshal_obj_updated (GtkObject *object, GtkSignalFunc func, gpointer func_data, GtkArg *args)
{
ObjUpdatedFunc f;
f = (ObjUpdatedFunc) func;
(* f) (CAL_QUERY (object), GTK_VALUE_STRING (args[0]),
GTK_VALUE_BOOL (args[1]), GTK_VALUE_INT (args[2]), GTK_VALUE_INT (args[3]),
func_data);
}
typedef void (* QueryDoneFunc) (CalQuery *query, CalQueryDoneStatus status, const char *error_str,
gpointer data);
static void
marshal_query_done (GtkObject *object, GtkSignalFunc func, gpointer func_data, GtkArg *args)
{
QueryDoneFunc f;
f = (QueryDoneFunc) func;
(* f) (CAL_QUERY (object), GTK_VALUE_ENUM (args[0]), GTK_VALUE_STRING (args[1]),
func_data);
}
/* Callback used when an object is updated in the query */
static void
obj_updated_cb (QueryListener *ql,
const GNOME_Evolution_Calendar_CalObjUID uid,
CORBA_boolean query_in_progress,
CORBA_long n_scanned,
CORBA_long total,
gpointer data)
{
CalQuery *query;
query = CAL_QUERY (data);
gtk_signal_emit (GTK_OBJECT (query), query_signals[OBJ_UPDATED],
uid, query_in_progress, (int) n_scanned, (int) total);
}
/* Callback used when an object is removed from the query */
static void
obj_removed_cb (QueryListener *ql,
const GNOME_Evolution_Calendar_CalObjUID uid,
gpointer data)
{
CalQuery *query;
query = CAL_QUERY (data);
gtk_signal_emit (GTK_OBJECT (query), query_signals[OBJ_REMOVED],
uid);
}
/* Callback used when the query terminates */
static void
query_done_cb (QueryListener *ql,
GNOME_Evolution_Calendar_QueryListener_QueryDoneStatus corba_status,
const CORBA_char *error_str,
gpointer data)
{
CalQuery *query;
CalQueryDoneStatus status;
query = CAL_QUERY (data);
switch (corba_status) {
case GNOME_Evolution_Calendar_QueryListener_SUCCESS:
status = CAL_QUERY_DONE_SUCCESS;
break;
case GNOME_Evolution_Calendar_QueryListener_PARSE_ERROR:
status = CAL_QUERY_DONE_PARSE_ERROR;
break;
default:
g_assert_not_reached ();
return;
}
gtk_signal_emit (GTK_OBJECT (query), query_signals[QUERY_DONE],
status, error_str);
}
/* Callback used when an error occurs when evaluating the query */
static void
eval_error_cb (QueryListener *ql,
const CORBA_char *error_str,
gpointer data)
{
CalQuery *query;
query = CAL_QUERY (data);
gtk_signal_emit (GTK_OBJECT (query), query_signals[EVAL_ERROR],
error_str);
}
/**
* cal_query_construct:
* @query: A calendar query.
* @cal: Handle to an open calendar.
* @sexp: S-expression that defines the query.
*
* Constructs a query object by issuing the query creation request to the
* calendar server.
*
* Return value: The same value as @query on success, or NULL if the request
* failed.
**/
CalQuery *
cal_query_construct (CalQuery *query,
GNOME_Evolution_Calendar_Cal cal,
const char *sexp)
{
CalQueryPrivate *priv;
GNOME_Evolution_Calendar_QueryListener corba_ql;
CORBA_Environment ev;
g_return_val_if_fail (query != NULL, NULL);
g_return_val_if_fail (IS_CAL_QUERY (query), NULL);
g_return_val_if_fail (sexp != NULL, NULL);
priv = query->priv;
priv->ql = query_listener_new (obj_updated_cb,
obj_removed_cb,
query_done_cb,
eval_error_cb,
query);
if (!priv->ql) {
g_message ("cal_query_construct(): Could not create the query listener");
return NULL;
}
corba_ql = BONOBO_OBJREF (priv->ql);
CORBA_exception_init (&ev);
priv->corba_query = GNOME_Evolution_Calendar_Cal_getQuery (cal, sexp, corba_ql, &ev);
if (ev._major == CORBA_USER_EXCEPTION
&& strcmp (CORBA_exception_id (&ev),
ex_GNOME_Evolution_Calendar_Cal_CouldNotCreate) == 0) {
g_message ("cal_query_construct(): The server could not create the query");
goto error;
} else if (ev._major != CORBA_NO_EXCEPTION) {
g_message ("cal_query_construct(): Could not issue the getQuery() request");
goto error;
}
CORBA_exception_free (&ev);
return query;
error:
CORBA_exception_free (&ev);
bonobo_object_unref (BONOBO_OBJECT (priv->ql));
priv->ql = NULL;
return NULL;
}
/**
* cal_query_new:
* @cal: Handle to an open calendar.
* @sexp: S-expression that defines the query.
*
* Creates a new query object by issuing the query creation request to the
* calendar server.
*
* Return value: A newly-created query object, or NULL if the request failed.
**/
CalQuery *
cal_query_new (GNOME_Evolution_Calendar_Cal cal,
const char *sexp)
{
CalQuery *query;
query = gtk_type_new (CAL_QUERY_TYPE);
if (!cal_query_construct (query, cal, sexp)) {
gtk_object_unref (GTK_OBJECT (query));
return NULL;
}
return query;
}
