path: root/addressbook/backend/ebook/e-book-view.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * The Evolution addressbook client object.
 *
 * Author:
 *   Nat Friedman (nat@helixcode.com)
 *
 * Copyright 1999, 2000, Helix Code, Inc.
 */

#include <addressbook.h>
#include <libgnorba/gnorba.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkmarshal.h>
#include <e-card-cursor.h>
#include <e-book-view-listener.h>
#include <e-book-view.h>

GtkObjectClass *e_book_view_parent_class;

struct _EBookViewPrivate {
    Evolution_BookView     corba_book_view;
    
    EBookViewListener     *listener;

    int                    responses_queued_id;
};

enum {
    CARD_CHANGED,
    CARD_REMOVED,
    CARD_ADDED,
    LAST_SIGNAL
};

static guint e_book_view_signals [LAST_SIGNAL];

static void
e_book_view_do_added_event (EBookView                 *book_view,
                EBookViewListenerResponse *resp)
{
    gtk_signal_emit (GTK_OBJECT (book_view), e_book_view_signals [CARD_ADDED],
             resp->cards);

    g_list_foreach (resp->cards, (GFunc) gtk_object_unref, NULL);
    g_list_free (resp->cards);
}

static void
e_book_view_do_modified_event (EBookView                 *book_view,
                   EBookViewListenerResponse *resp)
{
    gtk_signal_emit (GTK_OBJECT (book_view), e_book_view_signals [CARD_CHANGED],
             resp->id);

    g_free (resp->id); 
}

static void
e_book_view_do_removed_event (EBookView                 *book_view,
                  EBookViewListenerResponse *resp)
{
    gtk_signal_emit (GTK_OBJECT (book_view), e_book_view_signals [CARD_REMOVED],
             resp->cards);

    g_list_foreach (resp->cards, (GFunc) gtk_object_unref, NULL);
    g_list_free (resp->cards);
}


/*
 * Reading notices out of the EBookViewListener's queue.
 */
static void
e_book_view_check_listener_queue (EBookViewListener *listener, EBookView *book_view)
{
    EBookViewListenerResponse *resp;

    resp = e_book_view_listener_pop_response (listener);

    if (resp == NULL)
        return;

    switch (resp->op) {
    case CardAddedEvent:
        e_book_view_do_added_event (book_view, resp);
        break;
    case CardModifiedEvent:
        e_book_view_do_modified_event (book_view, resp);
        break;
    case CardRemovedEvent:
        e_book_view_do_removed_event (book_view, resp);
        break;
    default:
        g_error ("EBookView: Unknown operation %d in listener queue!\n",
             resp->op);
    }

    g_free (resp);
}

static gboolean
e_book_view_construct (EBookView *book_view, Evolution_BookView corba_book_view, EBookViewListener *listener)
{
    CORBA_Environment  ev;
    g_return_val_if_fail (book_view != NULL,     FALSE);
    g_return_val_if_fail (E_IS_BOOK_VIEW (book_view), FALSE);

    /*
     * Copy in the corba_book_view.
     */
    CORBA_exception_init (&ev);

    book_view->priv->corba_book_view = CORBA_Object_duplicate(corba_book_view, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("e_book_view_construct: Exception duplicating corba_book_view.\n");
        CORBA_exception_free (&ev);
        return FALSE;
    }

    Evolution_BookView_ref(book_view->priv->corba_book_view, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("e_book_view_construct: Exception reffing corba_book_view.\n");
        CORBA_exception_free (&ev);
        CORBA_exception_init (&ev);
            CORBA_Object_release (book_view->priv->corba_book_view, &ev);
        if (ev._major != CORBA_NO_EXCEPTION) {
            g_warning ("e_book_view_construct: Exception releasing corba_book_view.\n");
        }
        CORBA_exception_free (&ev);
        book_view->priv->corba_book_view = NULL;
        return FALSE;
    }

    CORBA_exception_free (&ev);

    /*
     * Create our local BookListener interface.
     */
    book_view->priv->listener = listener;

    gtk_object_ref(GTK_OBJECT(book_view->priv->listener));
    book_view->priv->responses_queued_id = gtk_signal_connect (GTK_OBJECT (book_view->priv->listener), "responses_queued",
                                   e_book_view_check_listener_queue, book_view);

    return TRUE;
}

/**
 * e_book_view_new:
 */
EBookView *
e_book_view_new (Evolution_BookView corba_book_view, EBookViewListener *listener)
{
    EBookView *book_view;

    book_view = gtk_type_new (E_BOOK_VIEW_TYPE);

    if (! e_book_view_construct (book_view, corba_book_view, listener)) {
        gtk_object_unref (GTK_OBJECT (book_view));
        return NULL;
    }

    return book_view;
}

static void
e_book_view_init (EBookView *book_view)
{
    book_view->priv                      = g_new0 (EBookViewPrivate, 1);
    book_view->priv->corba_book_view     = CORBA_OBJECT_NIL;
    book_view->priv->listener            = NULL;
    book_view->priv->responses_queued_id = 0;
}

static void
e_book_view_destroy (GtkObject *object)
{
    EBookView             *book_view = E_BOOK_VIEW (object);
    CORBA_Environment  ev;

    if (book_view->priv->corba_book_view) {
        CORBA_exception_init (&ev);

        Evolution_BookView_unref(book_view->priv->corba_book_view, &ev);
        if (ev._major != CORBA_NO_EXCEPTION) {
            g_warning ("EBookView: Exception while unreffing BookView\n");
            
            CORBA_exception_free (&ev);
            CORBA_exception_init (&ev);
        }

        CORBA_Object_release (book_view->priv->corba_book_view, &ev);
        if (ev._major != CORBA_NO_EXCEPTION) {
            g_warning ("EBookView: Exception while releasing BookView\n");
        }

        CORBA_exception_free (&ev);
    }

    if (book_view->priv->listener) {
        if (book_view->priv->responses_queued_id)
            gtk_signal_disconnect(GTK_OBJECT(book_view->priv->listener),
                          book_view->priv->responses_queued_id);
        gtk_object_unref (GTK_OBJECT(book_view->priv->listener));
    }

    g_free (book_view->priv);

    if (GTK_OBJECT_CLASS (e_book_view_parent_class)->destroy)
        GTK_OBJECT_CLASS (e_book_view_parent_class)->destroy (object);
}

static void
e_book_view_class_init (EBookViewClass *klass)
{
    GtkObjectClass *object_class = (GtkObjectClass *) klass;

    e_book_view_parent_class = gtk_type_class (gtk_object_get_type ());

    e_book_view_signals [CARD_CHANGED] =
        gtk_signal_new ("card_changed",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EBookViewClass, card_changed),
                gtk_marshal_NONE__POINTER,
                GTK_TYPE_NONE, 1,
                GTK_TYPE_POINTER);

    e_book_view_signals [CARD_ADDED] =
        gtk_signal_new ("card_added",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EBookViewClass, card_added),
                gtk_marshal_NONE__STRING,
                GTK_TYPE_NONE, 1,
                GTK_TYPE_STRING);

    e_book_view_signals [CARD_REMOVED] =
        gtk_signal_new ("card_removed",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EBookViewClass, card_removed),
                gtk_marshal_NONE__POINTER,
                GTK_TYPE_NONE, 1,
                GTK_TYPE_POINTER);

    gtk_object_class_add_signals (object_class, e_book_view_signals,
                      LAST_SIGNAL);

    object_class->destroy = e_book_view_destroy;
}

/**
 * e_book_view_get_type:
 */
GtkType
e_book_view_get_type (void)
{
    static GtkType type = 0;

    if (! type) {
        GtkTypeInfo info = {
            "EBookView",
            sizeof (EBookView),
            sizeof (EBookViewClass),
            (GtkClassInitFunc)  e_book_view_class_init,
            (GtkObjectInitFunc) e_book_view_init,
            NULL, /* reserved 1 */
            NULL, /* reserved 2 */
            (GtkClassInitFunc) NULL
        };

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

    return type;
}