Calendar client side work - Federico

svn path=/trunk/; revision=1629

1 files changed, 291 insertions, 0 deletions

diff --git a/calendar/cal-client.c b/calendar/cal-client.c
new file mode 100644
index 0000000000..0f6b31c06a
--- /dev/null
+++ b/calendar/cal-client.c
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+/* GNOME calendar client
+ *
+ * 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-client.h"
+#include "cal-listener.h"
+
+
+
+/* Loading state for the calendar client */
+typedef enum {
+	LOAD_STATE_NOT_LOADED,
+	LOAD_STATE_LOADING,
+	LOAD_STATE_LOADED
+} LoadState;
+
+/* Private part of the CalClient structure */
+typedef struct {
+	/* Load state to avoid multiple loads */
+	LoadState load_state;
+
+	/* The calendar factory we are contacting */
+	GNOME_Calendar_CalFactory factory;
+
+	/* Our calendar listener */
+	CalListener *listener;
+} CalClientPrivate;
+
+
+
+/* Signal IDs */
+enum {
+	CAL_LOADED,
+	LAST_SIGNAL
+};
+
+static void cal_client_class_init (CalClientClass *class);
+static void cal_client_init (CalClient *client);
+static void cal_client_destroy (GtkObject *object);
+
+static guint cal_client_signals[LAST_SIGNAL];
+
+static GtkObjectClass *parent_class;
+
+
+
+/**
+ * cal_client_get_type:
+ * @void:
+ *
+ * Registers the #CalClient class if necessary, and returns the type ID assigned
+ * to it.
+ *
+ * Return value: The type ID of the #CalClient class.
+ **/
+GtkType
+cal_client_get_type (void)
+{
+	static GtkType cal_client_type = 0;
+
+	if (!cal_client_type) {
+		static const GtkTypeInfo cal_client_info = {
+			"CalClient",
+			sizeof (CalClient),
+			sizeof (CalClientClass),
+			(GtkClassInitFunc) cal_client_class_init,
+			(GtkObjectInitFunc) cal_client_init,
+			NULL, /* reserved_1 */
+			NULL, /* reserved_2 */
+			(GtkClassInitFunc) NULL
+		};
+
+		cal_client_type = gtk_type_unique (GTK_TYPE_OBJECT, &cal_client_info);
+	}
+
+	return cal_client_type;
+}
+
+/* Class initialization function for the calendar client */
+static void
+cal_client_class_init (CalClientClass *class)
+{
+	GtkObjectClass *object_class;
+
+	object_class = (GtkObjectClass *) class;
+
+	parent_class = gtk_type_class (GTK_TYPE_OBJECT);
+
+	cal_client_signals[CAL_LOADED] =
+		gtk_signal_new ("cal_loaded",
+				GTK_RUN_FIRST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (CalClientClass, cal_loaded),
+				gtk_marshal_NONE__ENUM,
+				GTK_TYPE_NONE, 1,
+				GTK_TYPE_ENUM);
+
+	gtk_object_class_add_signals (object_class, cal_client_signals, LAST_SIGNAL);
+
+	object_class->destroy = cal_client_destroy;
+}
+
+/* Object initialization function for the calendar client */
+static void
+cal_client_init (CalClient *client)
+{
+	CalClientPrivate *priv;
+
+	priv = g_new0 (CalClientPrivate, 1);
+	client->priv = priv;
+
+	priv->factory = CORBA_OBJECT_NIL;
+	priv->load_state = LOAD_STATE_NOT_LOADED;
+}
+
+/* Destroy handler for the calendar client */
+static void
+cal_client_destroy (GtkObject *object)
+{
+	CalClient *client;
+	CalClientPrivate *priv;
+
+	g_return_if_fail (object != NULL);
+	g_return_if_fail (IS_CAL_CLIENT (object));
+
+	client = CAL_CLIENT (object);
+	priv = client->priv;
+
+	/* FIXME */
+
+	g_free (priv);
+
+	if (GTK_OBJECT_CLASS (parent_class)->destroy)
+		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+
+
+/**
+ * cal_client_construct:
+ * @client: A calendar client.
+ * 
+ * Constructs a calendar client object by contacting the calendar factory of the
+ * calendar server.
+ * 
+ * Return value: The same object as the @client argument, or NULL if the
+ * calendar factory could not be contacted.
+ **/
+CalClient *
+cal_client_construct (CalClient *client)
+{
+	CalClientPrivate *priv;
+	GNOME_Calendar_CalFactory factory, factory_copy;
+	CORBA_Environment ev;
+	int result;
+
+	g_return_val_if_fail (client != NULL, NULL);
+	g_return_val_if_fail (IS_CAL_CLIENT (client), NULL);
+
+	priv = client->priv;
+
+	factory = (GNOME_Calendar_CalFactory) goad_server_activate_with_id (
+		NULL,
+		"calendar:cal-factory",
+		GOAD_ACTIVATE_REMOTE,
+		NULL);
+
+	CORBA_exception_init (&ev);
+	result = CORBA_Object_is_nil (factory, &ev);
+	if (ev._major != CORBA_NO_EXCEPTION) {
+		g_message ("cal_client_construct(): could not see if the factory is NIL");
+		CORBA_exception_free (&ev);
+		return NULL;
+	}
+	CORBA_exception_free (&ev);
+
+	if (result) {
+		g_message ("cal_client_construct(): could not contact Tlacuache, "
+			   "the personal calendar server");
+		return NULL;
+	}
+
+	CORBA_exception_init (&ev);
+	factory_copy = CORBA_Object_duplicate (factory, &ev);
+
+	if (ev._major != CORBA_NO_EXCEPTION) {
+		g_message ("cal_client_construct(): could not duplicate the calendar factory");
+		CORBA_exception_free (&ev);
+		return NULL;
+	}
+	CORBA_exception_free (&ev);
+
+	priv->factory = factory_copy;
+	return client;
+}
+
+/**
+ * cal_client_new:
+ * @void: 
+ * 
+ * Creates a new calendar client.  It should be initialized by calling
+ * cal_client_load_calendar() or cal_client_create_calendar().
+ * 
+ * Return value: A newly-created calendar client, or NULL if the client could
+ * not be constructed because it could not contact the calendar server.
+ **/
+CalClient *
+cal_client_new (void)
+{
+	CalClient *client;
+
+	client = gtk_type_new (CAL_CLIENT_TYPE);
+
+	if (!cal_client_construct (client)) {
+		g_message ("cal_client_new(): could not construct the calendar client");
+		gtk_object_unref (client);
+		return NULL;
+	}
+
+	return client;
+}
+
+/**
+ * cal_client_load_calendar:
+ * @client: A calendar client.
+ * @str_uri: URI of calendar to load.
+ * 
+ * Makes a calendar client initiate a request to load a calendar.  The calendar
+ * client will emit the "cal_loaded" signal when the response from the server is
+ * received.
+ * 
+ * Return value: TRUE on success, FALSE on failure to issue the load request.
+ **/
+gboolean
+cal_client_load_calendar (CalClient *client, const char *str_uri)
+{
+	CalClientPrivate *priv;
+	GNOME_Calendar_Listener corba_listener;
+	CORBA_Environment ev;
+
+	g_return_val_if_fail (client != NULL, FALSE);
+	g_return_val_if_fail (IS_CAL_CLIENT (client), FALSE);
+
+	priv = client->priv;
+	g_return_val_if_fail (priv->load_state == LOAD_STATE_NOT_LOADED, FALSE);
+
+	g_return_val_if_fail (str_uri != NULL, FALSE);
+
+	priv->listener = cal_listener_new ();
+	if (!priv->listener) {
+		g_message ("cal_client_load_calendar(): could not create the listener");
+		return FALSE;
+	}
+
+	corba_listener = (GNOME_Calendar_Listener) gnome_object_corba_objref (priv->listener);
+
+	CORBA_exception_init (&ev);
+
+	priv->load_state = LOAD_STATE_LOADING;
+	GNOME_Calendar_CalFactory_load (priv->factory, str_uri, corba_listener, &ev);
+
+	if (ev._major != CORBA_NO_EXCEPTION) {
+		g_message ("cal_client_load_calendar(): load request failed");
+		gtk_object_unref (priv->listener);
+		priv->listener = NULL;
+		priv->load_state = LOAD_STATE_NOT_LOADED;
+		CORBA_exception_free (&ev);
+		return FALSE;
+	}
+	CORBA_exception_free (&ev);
+
+	return TRUE;
+}