feaa9ddc81
2001-03-29 Federico Mena Quintero <federico@ximian.com> Engine for live queries to calendars. A query object watches a CalBackend in the PCS and is otherwise completely separate from it; backends need to do nothing to support live queries. Right now we have the following functions: (get-vtype) Returns a string indicating the type of component (VEVENT, VTODO, VJOURNAL, VFREEBUSY, VTIMEZONE, UNKNOWN). (occur-in-time-range? START END) START - int, time_t start of the time range END - int, time_t end of the time range Returns a boolean indicating whether the component has any occurrences in the specified time range. * idl/evolution-calendar.idl (Cal::getQuery): New method that initiates a live query. (Query): New interface for a handle to a live query. (QueryListener): New interface for a listener to changes in a live query. * pcs/query.[ch]: New files with the live query engine. * pcs/cal-backend.h (CalBackendClass): Added notification signals so that the query system can catch them. (CalBackendClass): New virtual method ::get_load_state(). * pcs/cal-backend.c (cal_backend_opened): (cal_backend_obj_updated): (cal_backend_obj_updated): New functions to emit the notification signals; to be used only by backend implementations. (cal_backend_get_load_state): New function. * pcs/cal-backend-file.c (notify_update): Call cal_backend_obj_updated(). (notify_remove): Call call_backend_obj_removed(). (open_cal): Free the icalcomp if it is not of the correct type. (cal_backend_file_get_load_state): Implemented new method. * pcs/cal-backend-db.c (cal_backend_db_update_object): Call cal_backend_obj_updated(). (cal_backend_db_remove_object): Call cal_backend_obj_removed(). (cal_backend_db_get_load_state): Implemented new method. * pcs/cal.c (Cal_get_query): Implementation of the ::getQuery() method. svn path=/trunk/; revision=9013
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/* Evolution calendar - Live search query implementation
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*
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* Copyright (C) 2001 Ximian, Inc.
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*
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* Author: Federico Mena-Quintero <federico@ximian.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef QUERY_H
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#define QUERY_H
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#include <libgnome/gnome-defs.h>
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#include <bonobo/bonobo-xobject.h>
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#include "cal-backend.h"
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BEGIN_GNOME_DECLS
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#define QUERY_TYPE (query_get_type ())
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#define QUERY(obj) (GTK_CHECK_CAST ((obj), QUERY_TYPE, Query))
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#define QUERY_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), QUERY_TYPE, QueryClass))
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#define IS_QUERY(obj) (GTK_CHECK_TYPE ((obj), QUERY_TYPE))
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#define IS_QUERY_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), QUERY_TYPE))
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typedef struct _QueryPrivate QueryPrivate;
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typedef struct {
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BonoboXObject xobject;
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/* Private data */
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QueryPrivate *priv;
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} Query;
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typedef struct {
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BonoboXObjectClass parent_class;
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POA_GNOME_Evolution_Calendar_Query__epv epv;
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} QueryClass;
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GtkType query_get_type (void);
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Query *query_construct (Query *query,
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CalBackend *backend,
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GNOME_Evolution_Calendar_QueryListener ql,
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const char *sexp);
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Query *query_new (CalBackend *backend,
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GNOME_Evolution_Calendar_QueryListener ql,
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const char *sexp);
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END_GNOME_DECLS
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#endif
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