path: root/addressbook/backend/pas/pas-card-cursor.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * pas-card-cursor.c: Implements card cursors.
 *
 * Author:
 *   Christopher James Lahey <clahey@helixcode.com.
 */

#include <config.h>
#include "addressbook.h"
#include "pas-card-cursor.h"

struct _PASCardCursorPrivate {
    long     (*get_length) (PASCardCursor *cursor, gpointer data);
    char *   (*get_nth)    (PASCardCursor *cursor, long n, gpointer data);
    gpointer   data;
};

/*
 * A pointer to our parent object class
 */
static BonoboObjectClass *parent_class;

/*
 * The VEPV for the CardCursor object
 */
static POA_GNOME_Evolution_Addressbook_CardCursor__vepv cursor_vepv;

/*
 * Implemented GtkObject::destroy
 */
static void
pas_card_cursor_destroy (GtkObject *object)
{
    PASCardCursor *cursor = PAS_CARD_CURSOR (object);

    if ( cursor->priv )
        g_free ( cursor->priv );

    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

/*
 * CORBA Demo::Echo::echo method implementation
 */
static CORBA_long
impl_pas_card_cursor_get_length (PortableServer_Servant  servant,
                   CORBA_Environment      *ev)
{
    PASCardCursor *cursor = PAS_CARD_CURSOR (bonobo_object_from_servant (servant));
    if ( cursor->priv->get_length )
        return cursor->priv->get_length( cursor, cursor->priv->data );
    else
        return 0;
}

/*
 * CORBA Demo::Echo::echo method implementation
 */
static char *
impl_pas_card_cursor_get_nth (PortableServer_Servant  servant,
                const CORBA_long        n,
                CORBA_Environment      *ev)
{
    PASCardCursor *cursor = PAS_CARD_CURSOR (bonobo_object_from_servant (servant));
    if ( cursor->priv->get_nth ) {
        char *vcard = cursor->priv->get_nth( cursor, n, cursor->priv->data );
        char *retval = CORBA_string_dup (vcard);
        g_free (vcard);
        return retval;
    } else
        return CORBA_string_dup ("");
}

/*
 * If you want users to derive classes from your implementation
 * you need to support this method.
 */
POA_GNOME_Evolution_Addressbook_CardCursor__epv *
pas_card_cursor_get_epv (void)
{
    POA_GNOME_Evolution_Addressbook_CardCursor__epv *epv;

    epv = g_new0 (POA_GNOME_Evolution_Addressbook_CardCursor__epv, 1);

    /*
     * This is the method invoked by CORBA
     */
    epv->count  = impl_pas_card_cursor_get_length;
    epv->getNth = impl_pas_card_cursor_get_nth;

    return epv;
}

static void
init_pas_card_cursor_corba_class (void)
{
    cursor_vepv.Bonobo_Unknown_epv       = bonobo_object_get_epv ();
    cursor_vepv.GNOME_Evolution_Addressbook_CardCursor_epv = pas_card_cursor_get_epv ();
}

static void
pas_card_cursor_class_init (PASCardCursorClass *klass)
{
    GtkObjectClass *object_class = (GtkObjectClass *) klass;

    parent_class = gtk_type_class (bonobo_object_get_type ());

    object_class->destroy = pas_card_cursor_destroy;

    init_pas_card_cursor_corba_class ();
}

static void
pas_card_cursor_init (PASCardCursor *cursor)
{
    cursor->priv = g_new(PASCardCursorPrivate, 1);
    cursor->priv->get_length = NULL;
    cursor->priv->get_nth = NULL;
    cursor->priv->data = NULL;
}

GtkType
pas_card_cursor_get_type (void)
{
    static GtkType type = 0;

    if (!type){
        GtkTypeInfo info = {
            "PASCardCursor",
            sizeof (PASCardCursor),
            sizeof (PASCardCursorClass),
            (GtkClassInitFunc) pas_card_cursor_class_init,
            (GtkObjectInitFunc) pas_card_cursor_init,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

        type = gtk_type_unique (bonobo_object_get_type (), &info);
    }

    return type;
}

PASCardCursor *
pas_card_cursor_construct (PASCardCursor           *cursor,
               GNOME_Evolution_Addressbook_CardCursor     corba_cursor,
               PASCardCursorLengthFunc  get_length,
               PASCardCursorNthFunc     get_nth,
               gpointer data)
{
    g_return_val_if_fail (cursor != NULL, NULL);
    g_return_val_if_fail (PAS_IS_CARD_CURSOR (cursor), NULL);
    g_return_val_if_fail (corba_cursor != CORBA_OBJECT_NIL, NULL);

    /*
     * Call parent constructor
     */
    if (!bonobo_object_construct (BONOBO_OBJECT (cursor), (CORBA_Object) corba_cursor))
        return NULL;

    /*
     * Initialize cursor
     */
    cursor->priv->get_length = get_length;
    cursor->priv->get_nth = get_nth;
    cursor->priv->data = data;
    
    /*
     * Success: return the GtkType we were given
     */
    return cursor;
}

/*
 * This routine creates the ORBit CORBA server and initializes the
 * CORBA side of things
 */
static GNOME_Evolution_Addressbook_CardCursor
create_cursor (BonoboObject *cursor)
{
    POA_GNOME_Evolution_Addressbook_CardCursor *servant;
    CORBA_Environment ev;

    servant = (POA_GNOME_Evolution_Addressbook_CardCursor *) g_new0 (BonoboObjectServant, 1);
    servant->vepv = &cursor_vepv;

    CORBA_exception_init (&ev);
    POA_GNOME_Evolution_Addressbook_CardCursor__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION){
        g_free (servant);
        CORBA_exception_free (&ev);
        return CORBA_OBJECT_NIL;
    }

    CORBA_exception_free (&ev);

    /*
     * Activates the CORBA object.
     */
    return (GNOME_Evolution_Addressbook_CardCursor) bonobo_object_activate_servant (cursor, servant);
}

PASCardCursor *
pas_card_cursor_new (PASCardCursorLengthFunc  get_length,
             PASCardCursorNthFunc     get_nth,
             gpointer data)
{
    PASCardCursor *cursor;
    GNOME_Evolution_Addressbook_CardCursor corba_cursor;

    cursor = gtk_type_new (pas_card_cursor_get_type ());
    corba_cursor = create_cursor (BONOBO_OBJECT (cursor));

    if (corba_cursor == CORBA_OBJECT_NIL){
        gtk_object_unref (GTK_OBJECT (cursor));
        return NULL;
    }
    
    return pas_card_cursor_construct (cursor,
                      corba_cursor,
                      get_length,
                      get_nth,
                      data);
}