path: root/calendar/idl/evolution-calendar.idl

/* Evolution calendar interface
 *
 * Copyright (C) 2000 Eskil Heyn Olsen
 * Copyright (C) 2000 Helix Code, Inc.
 * Copyright (C) 2000 Ximian, Inc.
 *
 * Authors: Eskil Heyn Olsen <deity@eskil.dk>
 *          Federico Mena-Quintero <federico@ximian.com>
 */

#ifndef _EVOLUTION_CALENDAR_IDL_
#define _EVOLUTION_CALENDAR_IDL_

#include <Bonobo.idl>

module GNOME {
module Evolution {

module Calendar {
    /* A calendar component (event/todo/journal/etc), represented as an
     * iCalendar string.
     */
    typedef string CalObj;

    /* A unique identifier for a calendar component */
    typedef string CalObjUID;

    /* Sequence of unique identifiers */
    typedef sequence<CalObjUID> CalObjUIDSeq;

    /* A unique identifier for an alarm subcomponent */
    typedef string CalAlarmUID;

    /* Flags for getting UID sequences */
    typedef long CalObjType;
    const CalObjType TYPE_EVENT   = 1 << 0;
    const CalObjType TYPE_TODO    = 1 << 1;
    const CalObjType TYPE_JOURNAL = 1 << 2;
    const CalObjType TYPE_ANY     = 0x07;

    /* Types of object changes made */
    typedef long CalObjChangeType;
    const CalObjChangeType ADDED = 1 << 0;
    const CalObjChangeType MODIFIED = 1 << 1;
    const CalObjChangeType DELETED = 1 << 2;
    
    /* Types of alarms */
    enum AlarmType {
        MAIL,
        PROGRAM,
        DISPLAY,
        AUDIO
    };

    /* Used to store a time_t */
    typedef unsigned long Time_t;

    /* An instance of a calendar component that actually occurs.  These are
     * "virtual" objects in that they are used to represent instances of
     * recurring events and alarms.  "Real" objects just contain the
     * information required to figure out the times at which they recur or
     * trigger.  
     */
    struct CalObjInstance {
        CalObjUID uid;
        Time_t start;
        Time_t end;
    };

    /* Used to transfer a list of component occurrences */
    typedef sequence<CalObjInstance> CalObjInstanceSeq;

    /* An object change */
    struct CalObjChange {
        CalObj calobj;
        CalObjChangeType type;
    };

    /* Used to transfer a list of changed components */
    typedef sequence<CalObjChange> CalObjChangeSeq;

    /* An alarm trigger instance */
    struct CalAlarmInstance {
        CalAlarmUID auid;
        Time_t trigger;
        Time_t occur;
    };

    /* Used to represent a list of alarm triggers for a single component */
    typedef sequence<CalAlarmInstance> CalAlarmInstanceSeq;

    /* Alarms for a component */
    struct CalComponentAlarms {
        CalObj calobj;
        CalAlarmInstanceSeq alarms;
    };

    /* Used to represent a list of components plus their triggers */
    typedef sequence<CalComponentAlarms> CalComponentAlarmsSeq;

    interface Query;

    interface Listener;

    interface QueryListener;

    /* Calendar client interface */
    interface Cal : Bonobo::Unknown {
        exception NotFound {};
        exception InvalidRange {};
        exception InvalidObject {};
        exception CouldNotCreate {};

        /* A calendar is identified by its URI */
        readonly attribute string uri;

        /* Gets the number of components of the specified types */
        long countObjects (in CalObjType type);

        /* Gets a component based on its URI */
        CalObj getObject (in CalObjUID uid)
            raises (NotFound);

        /* Gets a list of UIDs based on component type */
        CalObjUIDSeq getUIDs (in CalObjType type);

        /* Gets a list of components that changed based on object type */
        CalObjChangeSeq getChanges (in CalObjType type, in string change_id);

        /* Gets a list of components that occur or recur in the specified time range */
        CalObjUIDSeq getObjectsInRange (in CalObjType type, 
                        in Time_t start, in Time_t end)
            raises (InvalidRange);

        /* Gets a list of the components that have alarms that trigger
         * in the specified range of time, and the trigger/occurrence
         * structures themselves.  
         */
        CalComponentAlarmsSeq getAlarmsInRange (in Time_t start, in Time_t end)
            raises (InvalidRange);

        /* Gets the alarms for the specified component that trigger in
         * the specified time range.  
         */
        CalComponentAlarms getAlarmsForObject (in CalObjUID uid,
                               in Time_t start, in Time_t end)
            raises (NotFound, InvalidRange);


        /* Updates a component by adding it if it does not exist or by
         * changing an existing one.  
         */
        void updateObject (in CalObjUID uid, in CalObj calobj)
            raises (InvalidObject);

        /* Removes a component */
        void removeObject (in CalObjUID uid)
            raises (NotFound);

        /* Initiates a live query of the calendar.  Returns a handle
         * to the live query itself; changes to components that are
         * present in the query are notified to the listener.
         */
        Query getQuery (in string sexp, in QueryListener ql)
            raises (CouldNotCreate);
    };

    /* Listener for changes in a calendar */
    interface Listener : Bonobo::Unknown {
        /* Return status when opening a calendar */
        enum OpenStatus {
            SUCCESS,        /* All OK */
            ERROR,          /* Generic error */
            NOT_FOUND,      /* Requested opening in only_if_exists mode
                         * when the URI did not exist.
                         */
            METHOD_NOT_SUPPORTED    /* A method handler is not registered */
        };

        /* Called from a CalFactory when a calendar is initially opened.
         * The listener must remember the cal object.  
         */
        void notifyCalOpened (in OpenStatus status, in Cal cal);

        /* Called from a Calendar when a component is added or changed */
        void notifyObjUpdated (in CalObjUID uid);

        /* Called from a Calendar when a component is removed */
        void notifyObjRemoved (in CalObjUID uid);
    };

    /* Handle to a live query on a calendar */
    interface Query : Bonobo::Unknown {
    };

    /* Listener for changes in a query of a calendar */
    interface QueryListener : Bonobo::Unknown {
        /* Called when a component is added or changed.  If
         * query_in_progress is true, then the initial query results are
         * being populated and the other arguments indicate the
         * percentage of completion Otherwise, the percent value is
         * unspecified.  */
        void notifyObjUpdated (in CalObjUID uid, 
                       in boolean query_in_progress, 
                       in long n_scanned,
                       in long total);

        /* Called when a component is removed */
        void notifyObjRemoved (in CalObjUID uid);

        /* Reported when a query ends */
        enum QueryDoneStatus {
            SUCCESS,
            PARSE_ERROR
        };

        /* Called when the query finishes populating itself some time
         * after it is created.  Before this is called,
         * notifyObjUpdated() may have been called several times to
         * indicate which objects are actually in the query, unless the
         * status result is a parse error.  
         */
        void notifyQueryDone (in QueryDoneStatus status, in string error_str);

        /* Called when an evaluation error occurs while performing a query */
        void notifyEvalError (in string error_str);
    };

    /* A calendar factory, can load and create calendars */
    interface CalFactory : Bonobo::Unknown {
        exception NilListener {};

        /* Open a calendar from an URI */
        void open (in string uri, in boolean only_if_exists, in Listener listener)
            raises (NilListener);
    };

    /* Interface to the alarm notification service */
    interface AlarmNotify : Bonobo::Unknown {
        exception InvalidURI {};
        exception BackendContactError {};
        exception NotFound {};

        /* Adds a calendar to the alarm notification system */
        void addCalendar (in string uri)
            raises (InvalidURI, BackendContactError);

        /* Removes a calendar from the alarm notification system */
        void removeCalendar (in string uri)
            raises (InvalidURI, NotFound);

        /* Makes the alarm notification daemon unconditionally exit */
        void die ();
    };
};

};
};

#endif