1 files changed, 343 insertions, 0 deletions
diff --git a/calendar/cal.c b/calendar/cal.c
new file mode 100644
index 0000000000..44b9361398
--- /dev/null
+++ b/calendar/cal.c
@@ -0,0 +1,343 @@
+/* GNOME calendar object
+ *
+ * Copyright (C) 2000 Helix Code, Inc.
+ *
+ * Author: Federico Mena-Quintero <federico@helixcode.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.
+ */
+
+#include <config.h>
+#include "cal.h"
+
+
+
+/* Private part of the Cal structure */
+typedef struct {
+	/* The URI where this calendar is stored */
+	char *uri;
+
+	/* List of listeners for this calendar */
+	GList *listeners;
+} CalPrivate;
+
+
+
+static void cal_class_init (CalClass *class);
+static void cal_init (Cal *cal);
+static void cal_destroy (GtkObject *object);
+
+static POA_GNOME_Calendar_Cal__vepv cal_vepv;
+
+static GnomeObjectClass *parent_class;
+
+
+
+/**
+ * cal_get_type:
+ * @void:
+ *
+ * Registers the #Cal class if necessary, and returns the type ID associated to
+ * it.
+ *
+ * Return value: The type ID of the #Cal class.
+ **/
+GtkType
+cal_get_type (void)
+{
+	static GtkType cal_type = 0;
+
+	if (!cal_type) {
+		static const GtkTypeInfo cal_info = {
+			"Cal",
+			sizeof (Cal),
+			sizeof (CalClass),
+			(GtkClassInitFunc) cal_class_init,
+			(GtkObjectInitFunc) cal_init,
+			NULL, /* reserved_1 */
+			NULL, /* reserved_2 */
+			(GtkClassInitFunc) NULL
+		};
+
+		cal_type = gtk_type_unique (gnome_object_get_type (), &cal_info);
+	}
+
+	return cal_type;
+}
+
+/* CORBA class initialzation function for the calendar */
+static void
+init_cal_corba_class (void)
+{
+	cal_vepv.GNOME_Unknown_epv = gnome_object_get_epv ();
+	cal_vepv.GNOME_Calendar_Cal_epv = cal_get_epv ();
+}
+
+/* Class initialization function for the calendar */
+static void
+cal_class_init (CalClass *class)
+{
+	GtkObjectClass *object_class;
+
+	object_class = (GtkObjectClass *) class;
+
+	parent_class = gtk_type_class (gnome_object_get_type ());
+
+	object_class->destroy = cal_destroy;
+
+	init_cal_corba_class ();
+}
+
+/* Object initialization function for the calendar */
+static void
+cal_init (Cal *cal)
+{
+	CalPrivate *priv;
+
+	priv = g_new0 (CalPrivate, 1);
+	cal->priv = priv;
+}
+
+/* Destroy handler for the calendar */
+static void
+cal_destroy (GtkObject *object)
+{
+	Cal *cal;
+	CalPrivate *priv;
+	GList *l;
+	CORBA_Environment *ev;
+
+	g_return_if_fail (object != NULL);
+	g_return_if_fail (IS_CAL (object));
+
+	cal = CAL (object);
+	priv = cal->priv;
+
+	if (priv->uri)
+		g_free (priv->uri);
+
+	CORBA_exception_init (&ev);
+
+	for (l = priv->listeners; l; l = l->next)
+		CORBA_Object_release (l->data, &ev);
+
+	g_list_free (priv->listeners);
+
+	g_free (priv);
+
+	if (GTK_OBJECT_CLASS (parent_class)->destroy)
+		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+
+
+
+/* CORBA servant implementation */
+
+/* Cal::get_uri method */
+static CORBA_char *
+Cal_get_uri (PortableServer_Servant servant,
+	     CORBA_Environment *ev)
+{
+	Cal *cal;
+	CalPrivate *priv;
+
+	cal = CAL (gnome_object_from_servant (servant));
+	priv = cal->priv;
+
+	return CORBA_string_dup (priv->uri);
+}
+
+/* Cal::add_listener method */
+static void
+Cal_add_listener (PortableServer_Servant servant,
+		  GNOME_Calendar_Listener listener,
+		  CORBA_Environment *ev)
+{
+	Cal *cal;
+
+	cal = CAL (gnome_object_from_servant (servant));
+	cal_add_listener (cal, listener);
+}
+
+/* Cal::remove_listener method */
+static void
+Cal_remove_listener (PortableServer_Servant servant,
+		     GNOME_Calendar_Listener listener,
+		     CORBA_Environment *ev)
+{
+	Cal *cal;
+
+	cal = CAL (gnome_object_from_servant (servant));
+	cal_remove_listener (cal, listener);
+}
+
+/**
+ * cal_get_epv:
+ * @void:
+ *
+ * Creates an EPV for the Cal CORBA class.
+ *
+ * Return value: A newly-allocated EPV.
+ **/
+POA_GNOME_Calendar_Cal__epv *
+cal_get_epv (void)
+{
+	POA_GNOME_Calendar_Cal__epv *epv;
+
+	epv = g_new0 (POA_GNOME_Calendar_Cal__epv, 1);
+	epv->get_uri = Cal_get_uri;
+	epv->add_listener = Cal_add_listener;
+	epv->remove_listener = Cal_remove_listener;
+
+	return epv;
+}
+
+
+
+/* Returns whether a CORBA object is nil */
+static gboolean
+corba_object_is_nil (CORBA_Object object)
+{
+	CORBA_Environment ev;
+	gboolean retval;
+
+	CORBA_exception_init (&ev);
+	retval = CORBA_Object_is_nil (object, &ev);
+	CORBA_exception_free (&ev);
+
+	return retval;
+}
+
+/**
+ * cal_construct:
+ * @cal: A calendar.
+ * @corba_cal: CORBA object for the calendar.
+ *
+ * Constructs a calendar by binding the corresponding CORBA object to it.
+ *
+ * Return value: The same object as the @cal argument.
+ **/
+Cal *
+cal_construct (Cal *cal, GNOME_Calendar_Cal corba_cal)
+{
+	g_return_val_if_fail (cal != NULL, NULL);
+	g_return_val_if_fail (IS_CAL (cal), NULL);
+	g_return_val_if_fail (!corba_object_is_nil (corba_cal), NULL);
+
+	gnome_object_construct (GNOME_OBJECT (cal), corba_cal);
+	return cal;
+}
+
+/**
+ * cal_corba_object_create:
+ * @object: #GnomeObject that will wrap the CORBA object.
+ * 
+ * Creates and activates the CORBA object that is wrapped by the specified
+ * calendar @object.
+ * 
+ * Return value: An activated object reference or #CORBA_OBJECT_NIL in case of
+ * failure.
+ **/
+GNOME_Calendar_Cal
+cal_corba_object_create (GnomeObject *object)
+{
+	POA_GNOME_Calendar_Cal *servant;
+	CORBA_Environment ev;
+
+	g_return_val_if_fail (object != NULL, CORBA_OBJECT_NIL);
+	g_return_val_if_fail (IS_CAL (object), CORBA_OBJECT_NIL);
+
+	servant = (POA_GNOME_Calendar_Cal *) g_new0 (GnomeObjectServant, 1);
+	servant->vepv = &cal_vepv;
+
+	CORBA_exception_init (&ev);
+	POA_GNOME_Calendar_Cal__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);
+	return (GNOME_Calendar_Cal) gnome_object_activate_servant (object, servant);
+}
+
+/**
+ * cal_add_listener:
+ * @cal: A calendar.
+ * @listener: A listener.
+ *
+ * Adds a listener for changes to a calendar.  The specified listener object
+ * will be used for notification when objects are added, removed, or changed in
+ * the calendar.
+ **/
+void
+cal_add_listener (Cal *cal, GNOME_Calendar_Listener listener)
+{
+	CalPrivate *priv;
+	CORBA_Environment ev;
+
+	g_return_if_fail (cal != NULL);
+	g_return_if_fail (IS_CAL (cal));
+	g_return_if_fail (!corba_object_is_nil (listener));
+
+	priv = cal->priv;
+
+	CORBA_exception_init (&ev);
+
+	GNOME_Unknown_ref (listener, &ev);
+	priv->listeners = g_list_prepend (priv->listeners, CORBA_Object_duplicate (listener, &ev));
+
+	CORBA_exception_free (&ev);
+}
+
+/**
+ * cal_remove_listener:
+ * @cal: A calendar.
+ * @listener: A listener.
+ *
+ * Removes a listener from a calendar so that no more notification events will
+ * be sent to the listener.
+ **/
+void
+cal_remove_listener (Cal *cal, GNOME_Calendar_Listener listener)
+{
+	CalPrivate *priv;
+	CORBA_Environment ev;
+	GList *l;
+
+	g_return_if_fail (cal != NULL);
+	g_return_if_fail (IS_CAL (cal));
+
+	priv = cal->priv;
+
+	CORBA_exception_init (&ev);
+
+	/* FIXME: CORBA_Object_is_equivalent() is not what one thinks.  This
+	 * code could fail in situtations subtle enough that I don't understand
+	 * them.  Someone has to figure out the standard CORBA idiom for
+	 * listeners or notification.
+	 */
+	for (l = priv->listeners; l; l = l->next)
+		if (CORBA_Object_is_equivalent (listener, l->data)) {
+			GNOME_Unknown_unref (listener, &ev);
+			priv->listeners = g_list_remove_link (priv->listeners, l);
+			g_list_free_1 (l);
+			break;
+		}
+
+	CORBA_exception_free (&ev);
+}