Do not use deprecated EBook/ECal API

80 files changed, 1806 insertions, 1480 deletions

diff --git a/calendar/gui/Makefile.am b/calendar/gui/Makefile.am
index 0a404d429c..09cc0559b0 100644
--- a/calendar/gui/Makefile.am
+++ b/calendar/gui/Makefile.am
@@ -209,7 +209,6 @@ libevolution_calendar_la_LIBADD =					\
 	$(top_builddir)/addressbook/gui/contact-list-editor/libecontactlisteditor.la \
 	$(top_builddir)/widgets/menus/libmenus.la			\
 	$(top_builddir)/shell/libeshell.la				\
-	$(top_builddir)/calendar/common/libevolution-calendarprivate.la	\
 	$(top_builddir)/calendar/gui/dialogs/libcal-dialogs.la		\
 	$(top_builddir)/calendar/importers/libevolution-calendar-importers.la \
 	$(top_builddir)/widgets/e-timezone-dialog/libetimezonedialog.la	\
diff --git a/calendar/gui/alarm-notify/Makefile.am b/calendar/gui/alarm-notify/Makefile.am
index 5296f95f19..c15181ad9c 100644
--- a/calendar/gui/alarm-notify/Makefile.am
+++ b/calendar/gui/alarm-notify/Makefile.am
@@ -44,7 +44,6 @@ evolution_alarm_notify_SOURCES =	\
 evolution_alarm_notify_LDADD =						\
 	$(top_builddir)/e-util/libeutil.la				\
 	$(top_builddir)/widgets/misc/libemiscwidgets.la			\
-	$(top_builddir)/calendar/common/libevolution-calendarprivate.la	\
 	$(CAMEL_LIBS)							\
 	$(EVOLUTION_CALENDAR_LIBS)					\
 	$(CANBERRA_LIBS)						\
diff --git a/calendar/gui/alarm-notify/alarm-notify.c b/calendar/gui/alarm-notify/alarm-notify.c
index 96e8a177aa..28b10ff602 100644
--- a/calendar/gui/alarm-notify/alarm-notify.c
+++ b/calendar/gui/alarm-notify/alarm-notify.c
@@ -26,16 +26,16 @@
 
 #include <string.h>
 #include <camel/camel.h>
+#include <libecal/e-cal-client.h>
 #include <libedataserver/e-url.h>
 #include <libedataserver/e-data-server-util.h>
 #include <libedataserverui/e-passwords.h>
-#include <libecal/e-cal.h>
+#include <libedataserverui/e-client-utils.h>
 
 #include "alarm.h"
 #include "alarm-notify.h"
 #include "alarm-queue.h"
 #include "config-data.h"
-#include "common/authentication.h"
 
 #define APPLICATION_ID "org.gnome.EvolutionAlarmNotify"
 
@@ -43,8 +43,8 @@ struct _AlarmNotifyPrivate {
 	/* Mapping from EUri's to LoadedClient structures */
 	/* FIXME do we need per source type uri hashes? or perhaps we
 	   just need to hash based on source */
-	GHashTable *uri_client_hash[E_CAL_SOURCE_TYPE_LAST];
-        ESourceList *source_lists[E_CAL_SOURCE_TYPE_LAST];
+	GHashTable *uri_client_hash[E_CAL_CLIENT_SOURCE_TYPE_LAST];
+        ESourceList *source_lists[E_CAL_CLIENT_SOURCE_TYPE_LAST];
 	ESourceList *selected_calendars;
         GMutex *mutex;
 };
@@ -97,7 +97,7 @@ alarm_notify_list_changed_cb (ESourceList *source_list,
                               AlarmNotify *an)
 {
 	GSList *groups, *sources, *p, *q;
-	ECalSourceType source_type = E_CAL_SOURCE_TYPE_LAST;
+	ECalClientSourceType source_type = E_CAL_CLIENT_SOURCE_TYPE_LAST;
 	ProcessRemovalsData prd;
 	GList *l;
 	gint i;
@@ -106,13 +106,13 @@ alarm_notify_list_changed_cb (ESourceList *source_list,
 		source_list, alarm_notify_list_changed_cb, an);
 
 	/* Figure out the source type */
-	for (i = 0; i < E_CAL_SOURCE_TYPE_LAST; i++) {
+	for (i = 0; i < E_CAL_CLIENT_SOURCE_TYPE_LAST; i++) {
 		if (source_list == an->priv->source_lists[i]) {
 			source_type = i;
 			break;
 		}
 	}
-	if (source_type == E_CAL_SOURCE_TYPE_LAST)
+	if (source_type == E_CAL_CLIENT_SOURCE_TYPE_LAST)
 		return;
 
 	/* process the additions */
@@ -156,12 +156,12 @@ alarm_notify_list_changed_cb (ESourceList *source_list,
 
 static void
 alarm_notify_load_calendars (AlarmNotify *an,
-                             ECalSourceType source_type)
+                             ECalClientSourceType source_type)
 {
 	ESourceList *source_list;
 	GSList *groups, *sources, *p, *q;
 
-	if (!e_cal_get_sources (&source_list, source_type, NULL)) {
+	if (!e_cal_client_get_sources (&source_list, source_type, NULL)) {
 		debug (("Cannont get sources"));
 		an->priv->source_lists[source_type] = NULL;
 
@@ -198,7 +198,7 @@ alarm_notify_load_calendars (AlarmNotify *an,
 
 static void
 alarm_notify_dequeue_client (gpointer key,
-                             ECal *client)
+                             ECalClient *client)
 {
 	alarm_queue_remove_client (client, TRUE);
 }
@@ -211,7 +211,7 @@ alarm_notify_finalize (GObject *object)
 
 	priv = ALARM_NOTIFY (object)->priv;
 
-	for (ii = 0; ii < E_CAL_SOURCE_TYPE_LAST; ii++) {
+	for (ii = 0; ii < E_CAL_CLIENT_SOURCE_TYPE_LAST; ii++) {
 		g_hash_table_foreach (
 			priv->uri_client_hash[ii],
 			(GHFunc) alarm_notify_dequeue_client, NULL);
@@ -279,7 +279,7 @@ alarm_notify_init (AlarmNotify *an)
 	an->priv->selected_calendars = config_data_get_calendars (
 		"/apps/evolution/calendar/sources");
 
-	for (ii = 0; ii < E_CAL_SOURCE_TYPE_LAST; ii++)
+	for (ii = 0; ii < E_CAL_CLIENT_SOURCE_TYPE_LAST; ii++)
 		an->priv->uri_client_hash[ii] = g_hash_table_new_full (
 			g_str_hash, g_str_equal,
 			(GDestroyNotify) g_free,
@@ -287,7 +287,7 @@ alarm_notify_init (AlarmNotify *an)
 
 	alarm_queue_init (an);
 
-	for (ii = 0; ii < E_CAL_SOURCE_TYPE_LAST; ii++)
+	for (ii = 0; ii < E_CAL_CLIENT_SOURCE_TYPE_LAST; ii++)
 		alarm_notify_load_calendars (an, ii);
 }
 
@@ -313,22 +313,30 @@ alarm_notify_new (void)
 }
 
 static void
-cal_opened_cb (ECal *client, const GError *error, gpointer user_data)
+client_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
 {
 	AlarmNotifyPrivate *priv;
 	AlarmNotify *an = ALARM_NOTIFY (user_data);
+	EClient *client = NULL;
+	GError *error = NULL;
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
 
 	priv = an->priv;
 
-	debug (("%s - Calendar Status %d%s%s%s", e_cal_get_uri (client), error ? error->code : 0, error ? " (" : "", error ? error->message : "", error ? ")" : ""));
+	debug (("%s - Calendar Status %d%s%s%s", e_client_get_uri (client), error ? error->code : 0, error ? " (" : "", error ? error->message : "", error ? ")" : ""));
+
+	if (!error) {
+		ECalClient *cal_client = E_CAL_CLIENT (client);
+
+		g_hash_table_insert (priv->uri_client_hash[e_cal_client_get_source_type (cal_client)], g_strdup (e_client_get_uri (client)), cal_client);
+		/* to resolve floating DATE-TIME properly */
+		e_cal_client_set_default_timezone (cal_client, config_data_get_timezone ());
 
-	if (!error)
-		alarm_queue_add_client (client);
-	else {
-		g_hash_table_remove (priv->uri_client_hash[e_cal_get_source_type (client)],
-				     e_cal_get_uri (client));
-		g_signal_handlers_disconnect_matched (G_OBJECT (client), G_SIGNAL_MATCH_DATA,
-						      0, 0, NULL, NULL, an);
+		alarm_queue_add_client (cal_client);
+	} else {
+		g_error_free (error);
 	}
 }
 
@@ -344,10 +352,9 @@ cal_opened_cb (ECal *client, const GError *error, gpointer user_data)
  * that it can be loaded in the future when the alarm daemon starts up.
  **/
 void
-alarm_notify_add_calendar (AlarmNotify *an, ECalSourceType source_type,  ESource *source, gboolean load_afterwards)
+alarm_notify_add_calendar (AlarmNotify *an, ECalClientSourceType source_type,  ESource *source, gboolean load_afterwards)
 {
 	AlarmNotifyPrivate *priv;
-	ECal *client;
 	EUri *e_uri;
 	gchar *str_uri;
 	gchar *pass_key;
@@ -390,16 +397,16 @@ alarm_notify_add_calendar (AlarmNotify *an, ECalSourceType source_type,  ESource
 		}
 	}
 
-	client = e_auth_new_cal_from_source (source, source_type);
+	debug (("%s - Calendar Open Async... %p", str_uri, source));
 
-	if (client) {
-		debug (("%s - Calendar Open Async... %p", str_uri, client));
-		g_hash_table_insert (priv->uri_client_hash[source_type], g_strdup (str_uri), client);
-		g_signal_connect (G_OBJECT (client), "cal_opened_ex", G_CALLBACK (cal_opened_cb), an);
-		/* to resolve floating DATE-TIME properly */
-		e_cal_set_default_timezone (client, config_data_get_timezone (), NULL);
-		e_cal_open_async (client, FALSE);
-	}
+	e_client_utils_open_new (source,
+		source_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS ? E_CLIENT_SOURCE_TYPE_EVENTS :
+		source_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS ? E_CLIENT_SOURCE_TYPE_TASKS :
+		source_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS ? E_CLIENT_SOURCE_TYPE_MEMOS :
+		E_CLIENT_SOURCE_TYPE_LAST,
+		TRUE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_cb, an);
 
 	g_free (str_uri);
 	g_free (pass_key);
@@ -407,17 +414,17 @@ alarm_notify_add_calendar (AlarmNotify *an, ECalSourceType source_type,  ESource
 }
 
 void
-alarm_notify_remove_calendar (AlarmNotify *an, ECalSourceType source_type, const gchar *str_uri)
+alarm_notify_remove_calendar (AlarmNotify *an, ECalClientSourceType source_type, const gchar *str_uri)
 {
 	AlarmNotifyPrivate *priv;
-	ECal *client;
+	ECalClient *cal_client;
 
 	priv = an->priv;
 
-	client = g_hash_table_lookup (priv->uri_client_hash[source_type], str_uri);
-	if (client) {
-		debug (("Removing Client %p", client));
-		alarm_queue_remove_client (client, FALSE);
+	cal_client = g_hash_table_lookup (priv->uri_client_hash[source_type], str_uri);
+	if (cal_client) {
+		debug (("Removing Client %p", cal_client));
+		alarm_queue_remove_client (cal_client, FALSE);
 		g_hash_table_remove (priv->uri_client_hash[source_type], str_uri);
 	}
 }
diff --git a/calendar/gui/alarm-notify/alarm-notify.h b/calendar/gui/alarm-notify/alarm-notify.h
index de7e0398a6..51837d21d5 100644
--- a/calendar/gui/alarm-notify/alarm-notify.h
+++ b/calendar/gui/alarm-notify/alarm-notify.h
@@ -27,7 +27,8 @@
 #define ALARM_NOTIFY_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
+#include <libedataserverui/e-client-utils.h>
 
 /* Standard GObject macros */
 #define TYPE_ALARM_NOTIFY \
@@ -66,11 +67,11 @@ struct _AlarmNotifyClass {
 GType		alarm_notify_get_type		(void);
 AlarmNotify *	alarm_notify_new		(void);
 void		alarm_notify_add_calendar	(AlarmNotify *an,
-						 ECalSourceType source_type,
+						 ECalClientSourceType source_type,
 						 ESource *source,
 						 gboolean load_afterwards);
 void		alarm_notify_remove_calendar	(AlarmNotify *an,
-						 ECalSourceType source_type,
+						 ECalClientSourceType source_type,
 						 const gchar *str_uri);
 ESourceList *	alarm_notify_get_selected_calendars
 						(AlarmNotify *an);
diff --git a/calendar/gui/alarm-notify/alarm-queue.c b/calendar/gui/alarm-notify/alarm-queue.c
index e8e5485e45..fde985f8be 100644
--- a/calendar/gui/alarm-notify/alarm-queue.c
+++ b/calendar/gui/alarm-notify/alarm-queue.c
@@ -34,6 +34,7 @@
 #include <canberra-gtk.h>
 #endif
 
+#include <libecal/e-cal-client-view.h>
 #include <libecal/e-cal-time-util.h>
 #include <libecal/e-cal-component.h>
 
@@ -69,10 +70,10 @@ static AlarmNotify *an;
 /* Structure that stores a client we are monitoring */
 typedef struct {
 	/* Monitored client */
-	ECal *client;
+	ECalClient *cal_client;
 
-	/* The live query to the calendar */
-	ECalView *query;
+	/* The live view to the calendar */
+	ECalClientView *view;
 
 	/* Hash table of component UID -> CompQueuedAlarms.  If an element is
 	 * present here, then it means its cqa->queued_alarms contains at least
@@ -142,17 +143,17 @@ static void	popup_notification		(time_t trigger,
 						 gpointer alarm_id,
 						 gboolean use_description);
 #endif
-static void	query_objects_changed_cb	(ECal *client,
-						 GList *objects,
+static void	query_objects_modified_cb	(ECalClientView *view,
+						 const GSList *objects,
 						 gpointer data);
-static void	query_objects_removed_cb	(ECal *client,
-						 GList *objects,
+static void	query_objects_removed_cb	(ECalClientView *view,
+						 const GSList *uids,
 						 gpointer data);
 
 static void update_cqa (CompQueuedAlarms *cqa, ECalComponent *comp);
 static void update_qa (ECalComponentAlarms *alarms, QueuedAlarm *qa);
 static void tray_list_remove_cqa (CompQueuedAlarms *cqa);
-static void on_dialog_objs_removed_cb (ECal *client, GList *objects, gpointer data);
+static void on_dialog_objs_removed_cb (ECalClientView *view, const GSList *uids, gpointer data);
 
 /* Alarm queue engine */
 
@@ -299,9 +300,9 @@ midnight_refresh_cb (gpointer alarm_id, time_t trigger, gpointer data)
 
 /* Looks up a client in the client alarms hash table */
 static ClientAlarms *
-lookup_client (ECal *client)
+lookup_client (ECalClient *cal_client)
 {
-	return g_hash_table_lookup (client_alarms_hash, client);
+	return g_hash_table_lookup (client_alarms_hash, cal_client);
 }
 
 /* Looks up a queued alarm based on its alarm ID */
@@ -347,10 +348,21 @@ remove_queued_alarm (CompQueuedAlarms *cqa, gpointer alarm_id,
 	cqa->queued_alarms = g_slist_delete_link (cqa->queued_alarms, l);
 
 	if (remove_alarm) {
-		cqa->expecting_update = TRUE;
-		e_cal_discard_alarm (cqa->parent_client->client, cqa->alarms->comp,
-				     qa->instance->auid, NULL);
-		cqa->expecting_update = FALSE;
+		GError *error = NULL;
+		ECalComponentId *id = e_cal_component_get_id (cqa->alarms->comp);
+		if (id) {
+			cqa->expecting_update = TRUE;
+			e_cal_client_discard_alarm_sync (cqa->parent_client->cal_client, id->uid, id->rid,
+						qa->instance->auid, NULL, &error);
+			cqa->expecting_update = FALSE;
+
+			if (error) {
+				if (!g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_NOT_SUPPORTED))
+					g_debug ("%s: Failed to discard alarm: %s", G_STRFUNC, error->message);
+				g_error_free (error);
+			}
+			e_cal_component_free_id (id);
+		}
 	}
 
 	g_free (qa);
@@ -425,7 +437,7 @@ alarm_trigger_cb (gpointer alarm_id, time_t trigger, gpointer data)
 	cqa = data;
 	comp = cqa->alarms->comp;
 
-	config_data_set_last_notification_time (cqa->parent_client->client, trigger);
+	config_data_set_last_notification_time (cqa->parent_client->cal_client, trigger);
 	debug (("Setting Last notification time to %s", e_ctime (&trigger)));
 
 	qa = lookup_queued_alarm (cqa, alarm_id);
@@ -543,6 +555,7 @@ static void
 load_alarms (ClientAlarms *ca, time_t start, time_t end)
 {
 	gchar *str_query, *iso_start, *iso_end;
+	GError *error = NULL;
 
 	debug (("..."));
 
@@ -563,31 +576,36 @@ load_alarms (ClientAlarms *ca, time_t start, time_t end)
 	g_free (iso_end);
 
 	/* create the live query */
-	if (ca->query) {
+	if (ca->view) {
 		debug (("Disconnecting old queries"));
 		g_signal_handlers_disconnect_matched (
-			ca->query, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, ca);
-		g_object_unref (ca->query);
-		ca->query = NULL;
+			ca->view, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, ca);
+		g_object_unref (ca->view);
+		ca->view = NULL;
 	}
 
-	/* FIXME: handle errors */
-	if (!e_cal_get_query (ca->client, str_query, &ca->query, NULL)) {
-		g_warning (G_STRLOC ": Could not get query for client");
+	if (!e_cal_client_get_view_sync (ca->cal_client, str_query, &ca->view, NULL, &error)) {
+		g_debug ("%s: Could not get query for client: %s", error ? error->message : "Unknown error", G_STRFUNC);
+		if (error)
+			g_error_free (error);
 	} else {
 		debug (("Setting Call backs"));
 
 		g_signal_connect (
-			ca->query, "objects_added",
-			G_CALLBACK (query_objects_changed_cb), ca);
+			ca->view, "objects-added",
+			G_CALLBACK (query_objects_modified_cb), ca);
 		g_signal_connect (
-			ca->query, "objects_modified",
-			G_CALLBACK (query_objects_changed_cb), ca);
+			ca->view, "objects-modified",
+			G_CALLBACK (query_objects_modified_cb), ca);
 		g_signal_connect (
-			ca->query, "objects_removed",
+			ca->view, "objects-removed",
 			G_CALLBACK (query_objects_removed_cb), ca);
 
-		e_cal_view_start (ca->query);
+		e_cal_client_view_start (ca->view, &error);
+		if (error) {
+			g_debug ("%s: Failed to start view: %s", G_STRFUNC, error->message);
+			g_error_free (error);
+		}
 	}
 
 	g_free (str_query);
@@ -609,7 +627,7 @@ load_alarms_for_today (ClientAlarms *ca)
 	 * half-open; we do not want to display the "last" displayed alarm
 	 * twice, once when it occurs and once when the alarm daemon restarts.
 	 */
-	from = config_data_get_last_notification_time (ca->client) + 1;
+	from = config_data_get_last_notification_time (ca->cal_client) + 1;
 	if (from <= 0)
 		from = MAX (from, day_start);
 
@@ -618,20 +636,6 @@ load_alarms_for_today (ClientAlarms *ca)
 	load_alarms (ca, from, day_end);
 }
 
-/* Called when a calendar client finished loading; we load its alarms */
-static void
-cal_opened_cb (ECal *client, const GError *error, gpointer data)
-{
-	ClientAlarms *ca;
-
-	ca = data;
-
-	if (error)
-		return;
-
-	load_alarms_for_today (ca);
-}
-
 /* Looks up a component's queued alarm structure in a client alarms structure */
 static CompQueuedAlarms *
 lookup_comp_queued_alarms (ClientAlarms *ca, const ECalComponentId *id)
@@ -693,35 +697,71 @@ remove_comp (ClientAlarms *ca, ECalComponentId *id)
  */
 struct _query_msg {
 	Message header;
-	GList *objects;
+	GSList *objects;
 	gpointer data;
 };
 
-static GList *
-duplicate_ical (GList *in_list)
+static GSList *
+duplicate_ical (const GSList *in_list)
 {
-	GList *l, *out_list = NULL;
+	const GSList *l;
+	GSList *out_list = NULL;
 	for (l = in_list; l; l = l->next) {
-		out_list = g_list_prepend (out_list, icalcomponent_new_clone (l->data));
+		out_list = g_slist_prepend (out_list, icalcomponent_new_clone (l->data));
 	}
 
-	return g_list_reverse (out_list);
+	return g_slist_reverse (out_list);
 }
 
-static GList *
-duplicate_ecal (GList *in_list)
+static GSList *
+duplicate_ecal (const GSList *in_list)
 {
-	GList *l, *out_list = NULL;
+	const GSList *l;
+	GSList *out_list = NULL;
 	for (l = in_list; l; l = l->next) {
 		ECalComponentId *id, *old;
 		old = l->data;
 		id = g_new0 (ECalComponentId, 1);
 		id->uid = g_strdup (old->uid);
 		id->rid = g_strdup (old->rid);
-		out_list = g_list_prepend (out_list, id);
+		out_list = g_slist_prepend (out_list, id);
+	}
+
+	return g_slist_reverse (out_list);
+}
+
+static gboolean
+get_alarms_for_object (ECalClient *cal_client, const ECalComponentId *id, time_t start, time_t end, ECalComponentAlarms **alarms)
+{
+	icalcomponent *icalcomp;
+	ECalComponent *comp;
+	ECalComponentAlarmAction omit[] = {-1};
+
+	g_return_val_if_fail (cal_client != NULL, FALSE);
+	g_return_val_if_fail (id != NULL, FALSE);
+	g_return_val_if_fail (alarms != NULL, FALSE);
+	g_return_val_if_fail (start >= 0 && end >= 0, FALSE);
+	g_return_val_if_fail (start <= end, FALSE);
+
+	if (!e_cal_client_get_object_sync (cal_client, id->uid, id->rid, &icalcomp, NULL, NULL))
+		return FALSE;
+
+	if (!icalcomp)
+		return FALSE;
+
+	comp = e_cal_component_new ();
+	if (!e_cal_component_set_icalcomponent (comp, icalcomp)) {
+		icalcomponent_free (icalcomp);
+		g_object_unref (comp);
+		return FALSE;
 	}
 
-	return g_list_reverse (out_list);
+	*alarms = e_cal_util_generate_alarms_for_comp (comp, start, end, omit, e_cal_client_resolve_tzid_cb,
+						       cal_client, e_cal_client_get_default_timezone (cal_client));
+
+	g_object_unref (comp);
+
+	return TRUE;
 }
 
 static void
@@ -733,13 +773,13 @@ query_objects_changed_async (struct _query_msg *msg)
 	gboolean found;
 	icaltimezone *zone;
 	CompQueuedAlarms *cqa;
-	GList *l;
-	GList *objects;
+	GSList *l;
+	GSList *objects;
 
 	ca = msg->data;
 	objects = msg->objects;
 
-	from = config_data_get_last_notification_time (ca->client);
+	from = config_data_get_last_notification_time (ca->cal_client);
 	if (from == -1)
 		from = time (NULL);
 	else
@@ -757,10 +797,10 @@ query_objects_changed_async (struct _query_msg *msg)
 		e_cal_component_set_icalcomponent (comp, l->data);
 
 		id = e_cal_component_get_id (comp);
-		found = e_cal_get_alarms_for_object (ca->client, id, from, day_end, &alarms);
+		found = get_alarms_for_object (ca->cal_client, id, from, day_end, &alarms);
 
 		if (!found) {
-			debug (("No Alarm found for client %p", ca->client));
+			debug (("No Alarm found for client %p", ca->cal_client));
 			tray_list_remove_cqa (lookup_comp_queued_alarms (ca, id));
 			remove_comp (ca, id);
 			g_hash_table_remove (ca->uid_alarms_hash, id);
@@ -826,13 +866,13 @@ query_objects_changed_async (struct _query_msg *msg)
 		g_object_unref (comp);
 		comp = NULL;
 	}
-	g_list_free (objects);
+	g_slist_free (objects);
 
 	g_slice_free (struct _query_msg, msg);
 }
 
 static void
-query_objects_changed_cb (ECal *client, GList *objects, gpointer data)
+query_objects_modified_cb (ECalClientView *view, const GSList *objects, gpointer data)
 {
 	struct _query_msg *msg;
 
@@ -851,13 +891,13 @@ static void
 query_objects_removed_async (struct _query_msg *msg)
 {
 	ClientAlarms *ca;
-	GList *l;
-	GList *objects;
+	GSList *l;
+	GSList *objects;
 
 	ca = msg->data;
 	objects = msg->objects;
 
-	debug (("Removing %d objects", g_list_length (objects)));
+	debug (("Removing %d objects", g_slist_length (objects)));
 
 	for (l = objects; l != NULL; l = l->next) {
 		/* If the alarm is already triggered remove it. */
@@ -867,19 +907,19 @@ query_objects_removed_async (struct _query_msg *msg)
 		e_cal_component_free_id (l->data);
 	}
 
-	g_list_free (objects);
+	g_slist_free (objects);
 
 	g_slice_free (struct _query_msg, msg);
 }
 
 static void
-query_objects_removed_cb (ECal *client, GList *objects, gpointer data)
+query_objects_removed_cb (ECalClientView *view, const GSList *uids, gpointer data)
 {
 	struct _query_msg *msg;
 
 	msg = g_slice_new0 (struct _query_msg);
 	msg->header.func = (MessageFunc) query_objects_removed_async;
-	msg->objects = duplicate_ecal (objects);
+	msg->objects = duplicate_ecal (uids);
 	msg->data = data;
 
 	message_push ((Message *) msg);
@@ -919,7 +959,7 @@ create_snooze (CompQueuedAlarms *cqa, gpointer alarm_id, gint snooze_mins)
 
 /* Launches a component editor for a component */
 static void
-edit_component (ECal *client, ECalComponent *comp)
+edit_component (ECalClient *cal_client, ECalComponent *comp)
 {
 	ESource *source;
 	gchar *command_line;
@@ -931,19 +971,19 @@ edit_component (ECal *client, ECalComponent *comp)
 	/* XXX Don't we have a function to construct these URIs?
 	 *     How are other apps expected to know this stuff? */
 
-	source = e_cal_get_source (client);
+	source = e_client_get_source (E_CLIENT (cal_client));
 	source_uid = e_source_peek_uid (source);
 
 	e_cal_component_get_uid (comp, &comp_uid);
 
-	switch (e_cal_get_source_type (client)) {
-		case E_CAL_SOURCE_TYPE_EVENT:
+	switch (e_cal_client_get_source_type (cal_client)) {
+		case E_CAL_CLIENT_SOURCE_TYPE_EVENTS:
 			scheme = "calendar:";
 			break;
-		case E_CAL_SOURCE_TYPE_TODO:
+		case E_CAL_CLIENT_SOURCE_TYPE_TASKS:
 			scheme = "task:";
 			break;
-		case E_CAL_SOURCE_TYPE_JOURNAL:
+		case E_CAL_CLIENT_SOURCE_TYPE_MEMOS:
 			scheme = "memo:";
 			break;
 		default:
@@ -973,8 +1013,8 @@ typedef struct {
 	CompQueuedAlarms *cqa;
 	gpointer alarm_id;
 	ECalComponent *comp;
-	ECal *client;
-	ECalView *query;
+	ECalClient *cal_client;
+	ECalClientView *view;
 	GdkPixbuf *image;
 	GtkTreeIter iter;
 } TrayIconData;
@@ -999,13 +1039,13 @@ free_tray_icon_data (TrayIconData *tray_data)
 		tray_data->location = NULL;
 	}
 
-	g_object_unref (tray_data->client);
-	tray_data->client = NULL;
+	g_object_unref (tray_data->cal_client);
+	tray_data->cal_client = NULL;
 
-	g_signal_handlers_disconnect_matched (tray_data->query, G_SIGNAL_MATCH_FUNC,
+	g_signal_handlers_disconnect_matched (tray_data->view, G_SIGNAL_MATCH_FUNC,
 					      0, 0, NULL, on_dialog_objs_removed_cb, NULL);
-	g_object_unref (tray_data->query);
-	tray_data->query = NULL;
+	g_object_unref (tray_data->view);
+	tray_data->view = NULL;
 
 	g_object_unref (tray_data->comp);
 	tray_data->comp = NULL;
@@ -1020,44 +1060,47 @@ free_tray_icon_data (TrayIconData *tray_data)
 static void
 on_dialog_objs_removed_async (struct _query_msg *msg)
 {
-	const gchar *our_uid;
-	GList *l;
 	TrayIconData *tray_data;
-	GList *objects;
+	GSList *l, *objects;
+	ECalComponentId *our_id;
 
 	debug (("..."));
 
 	tray_data = msg->data;
 	objects = msg->objects;
 
-	e_cal_component_get_uid (tray_data->comp, &our_uid);
-	g_return_if_fail (our_uid && *our_uid);
+	our_id = e_cal_component_get_id (tray_data->comp);
+	g_return_if_fail (our_id);
 
 	for (l = objects; l != NULL; l = l->next) {
-		const gchar *uid = l->data;
+		ECalComponentId *id = l->data;
 
-		if (!uid)
+		if (!id)
 			continue;
 
-		if (!strcmp (uid, our_uid)) {
+		if (g_strcmp0 (id->uid, our_id->uid) == 0&& g_strcmp0 (id->rid, our_id->rid) == 0) {
 			tray_data->cqa = NULL;
 			tray_data->alarm_id = NULL;
 			tray_icons_list = g_list_remove (tray_icons_list, tray_data);
 			tray_data = NULL;
 		}
+
+		e_cal_component_free_id (id);
 	}
 
+	e_cal_component_free_id (our_id);
+	g_slist_free (objects);
 	g_slice_free (struct _query_msg, msg);
 }
 
 static void
-on_dialog_objs_removed_cb (ECal *client, GList *objects, gpointer data)
+on_dialog_objs_removed_cb (ECalClientView *view, const GSList *uids, gpointer data)
 {
 	struct _query_msg *msg;
 
 	msg = g_slice_new0 (struct _query_msg);
 	msg->header.func = (MessageFunc) on_dialog_objs_removed_async;
-	msg->objects = objects;
+	msg->objects = duplicate_ecal (uids);
 	msg->data = data;
 
 	message_push ((Message *) msg);
@@ -1219,7 +1262,7 @@ notify_dialog_cb (AlarmNotifyResult result, gint snooze_mins, gpointer data)
 
 	debug (("Received from dialog"));
 
-	g_signal_handlers_disconnect_matched (tray_data->query, G_SIGNAL_MATCH_FUNC,
+	g_signal_handlers_disconnect_matched (tray_data->view, G_SIGNAL_MATCH_FUNC,
 					      0, 0, NULL, on_dialog_objs_removed_cb, NULL);
 
 	switch (result) {
@@ -1254,7 +1297,7 @@ notify_dialog_cb (AlarmNotifyResult result, gint snooze_mins, gpointer data)
 		break;
 
 	case ALARM_NOTIFY_EDIT:
-		edit_component (tray_data->client, tray_data->comp);
+		edit_component (tray_data->cal_client, tray_data->comp);
 
 		break;
 
@@ -1530,11 +1573,11 @@ display_notification (time_t trigger, CompQueuedAlarms *cqa,
 	tray_data->cqa = cqa;
 	tray_data->alarm_id = alarm_id;
 	tray_data->comp = g_object_ref (e_cal_component_clone (comp));
-	tray_data->client = cqa->parent_client->client;
-	tray_data->query = g_object_ref (cqa->parent_client->query);
+	tray_data->cal_client = cqa->parent_client->cal_client;
+	tray_data->view = g_object_ref (cqa->parent_client->view);
 	tray_data->blink_state = FALSE;
 	tray_data->snooze_set = FALSE;
-	g_object_ref (tray_data->client);
+	g_object_ref (tray_data->cal_client);
 
 	/* Task to add tray_data to the global tray_icon_list */
 	tray_list_add_new (tray_data);
@@ -1558,7 +1601,7 @@ display_notification (time_t trigger, CompQueuedAlarms *cqa,
 	g_free (time_str);
 	g_free (str);
 
-	g_signal_connect (G_OBJECT (tray_data->query), "objects_removed",
+	g_signal_connect (G_OBJECT (tray_data->view), "objects_removed",
 			  G_CALLBACK (on_dialog_objs_removed_cb), tray_data);
 
 	/* FIXME: We should remove this check */
@@ -1731,8 +1774,7 @@ mail_notification (time_t trigger, CompQueuedAlarms *cqa, gpointer alarm_id)
 
 	debug (("..."));
 
-	if (!e_cal_get_static_capability (cqa->parent_client->client,
-						CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS))
+	if (!e_client_check_capability (E_CLIENT (cqa->parent_client->cal_client), CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS))
 		return;
 
 	dialog = gtk_dialog_new_with_buttons (_("Warning"),
@@ -1932,20 +1974,20 @@ free_client_alarms_cb (gpointer key, gpointer value, gpointer user_data)
 
 	if (ca) {
 		remove_client_alarms (ca);
-		if (ca->client) {
+		if (ca->cal_client) {
 			debug (("Disconnecting Client"));
 
-			g_signal_handlers_disconnect_matched (ca->client, G_SIGNAL_MATCH_DATA,
+			g_signal_handlers_disconnect_matched (ca->cal_client, G_SIGNAL_MATCH_DATA,
 							      0, 0, NULL, NULL, ca);
-			g_object_unref (ca->client);
+			g_object_unref (ca->cal_client);
 		}
 
-		if (ca->query) {
+		if (ca->view) {
 			debug (("Disconnecting Query"));
 
-			g_signal_handlers_disconnect_matched (ca->query, G_SIGNAL_MATCH_DATA,
+			g_signal_handlers_disconnect_matched (ca->view, G_SIGNAL_MATCH_DATA,
 							      0, 0, NULL, NULL, ca);
-			g_object_unref (ca->query);
+			g_object_unref (ca->view);
 		}
 
 		g_hash_table_destroy (ca->uid_alarms_hash);
@@ -2016,52 +2058,46 @@ hash_ids (gpointer a)
 
 struct _alarm_client_msg {
 	Message header;
-	ECal *client;
+	ECalClient *cal_client;
 };
 
 static void
 alarm_queue_add_async (struct _alarm_client_msg *msg)
 {
 	ClientAlarms *ca;
-	ECal *client = msg->client;
+	ECalClient *cal_client = msg->cal_client;
 
 	g_return_if_fail (alarm_queue_inited);
-	g_return_if_fail (client != NULL);
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (cal_client != NULL);
+	g_return_if_fail (E_IS_CAL_CLIENT (cal_client));
 
-	ca = lookup_client (client);
+	ca = lookup_client (cal_client);
 	if (ca) {
 		/* We already have it. Unref the passed one*/
-		g_object_unref (client);
+		g_object_unref (cal_client);
 		return;
 	}
 
-	debug (("client=%p", client));
+	debug (("client=%p", cal_client));
 
 	ca = g_new (ClientAlarms, 1);
 
-	ca->client = client;
-	ca->query = NULL;
+	ca->cal_client = cal_client;
+	ca->view = NULL;
 
-	g_hash_table_insert (client_alarms_hash, client, ca);
+	g_hash_table_insert (client_alarms_hash, cal_client, ca);
 
 	ca->uid_alarms_hash = g_hash_table_new (
 		(GHashFunc) hash_ids, (GEqualFunc) compare_ids);
 
-	if (e_cal_get_load_state (client) == E_CAL_LOAD_LOADED) {
-		load_alarms_for_today (ca);
-	} else {
-		g_signal_connect (client, "cal_opened_ex",
-				  G_CALLBACK (cal_opened_cb),
-				  ca);
-	}
+	load_alarms_for_today (ca);
 
 	g_slice_free (struct _alarm_client_msg, msg);
 }
 
 /**
  * alarm_queue_add_client:
- * @client: A calendar client.
+ * @cal_client: A calendar client.
  *
  * Adds a calendar client to the alarm queueing system.  Alarm trigger
  * notifications will be presented at the appropriate times.  The client should
@@ -2074,13 +2110,13 @@ alarm_queue_add_async (struct _alarm_client_msg *msg)
  * queueing system when it is no longer wanted.
  **/
 void
-alarm_queue_add_client (ECal *client)
+alarm_queue_add_client (ECalClient *cal_client)
 {
 	struct _alarm_client_msg *msg;
 
 	msg = g_slice_new0 (struct _alarm_client_msg);
 	msg->header.func = (MessageFunc) alarm_queue_add_async;
-	msg->client = g_object_ref (client);
+	msg->cal_client = g_object_ref (cal_client);
 
 	message_push ((Message *) msg);
 }
@@ -2137,35 +2173,35 @@ static void
 alarm_queue_remove_async (struct _alarm_client_msg *msg)
 {
 	ClientAlarms *ca;
-	ECal *client = msg->client;
+	ECalClient *cal_client = msg->cal_client;
 
 	g_return_if_fail (alarm_queue_inited);
-	g_return_if_fail (client != NULL);
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (cal_client != NULL);
+	g_return_if_fail (E_IS_CAL_CLIENT (cal_client));
 
-	ca = lookup_client (client);
+	ca = lookup_client (cal_client);
 	g_return_if_fail (ca != NULL);
 
 	debug (("..."));
 	remove_client_alarms (ca);
 
 	/* Clean up */
-	if (ca->client) {
+	if (ca->cal_client) {
 		debug (("Disconnecting Client"));
 
-		g_signal_handlers_disconnect_matched (ca->client, G_SIGNAL_MATCH_DATA,
+		g_signal_handlers_disconnect_matched (ca->cal_client, G_SIGNAL_MATCH_DATA,
 						      0, 0, NULL, NULL, ca);
-		g_object_unref (ca->client);
-		ca->client = NULL;
+		g_object_unref (ca->cal_client);
+		ca->cal_client = NULL;
 	}
 
-	if (ca->query) {
+	if (ca->view) {
 		debug (("Disconnecting Query"));
 
-		g_signal_handlers_disconnect_matched (ca->query, G_SIGNAL_MATCH_DATA,
+		g_signal_handlers_disconnect_matched (ca->view, G_SIGNAL_MATCH_DATA,
 						      0, 0, NULL, NULL, ca);
-		g_object_unref (ca->query);
-		ca->query = NULL;
+		g_object_unref (ca->view);
+		ca->view = NULL;
 	}
 
 	g_hash_table_destroy (ca->uid_alarms_hash);
@@ -2173,7 +2209,7 @@ alarm_queue_remove_async (struct _alarm_client_msg *msg)
 
 	g_free (ca);
 
-	g_hash_table_remove (client_alarms_hash, client);
+	g_hash_table_remove (client_alarms_hash, cal_client);
 
 	g_slice_free (struct _alarm_client_msg, msg);
 }
@@ -2181,18 +2217,18 @@ alarm_queue_remove_async (struct _alarm_client_msg *msg)
 /** alarm_queue_remove_client
  *
  * asynchronously remove client from alarm queue.
- * @client: Client to remove.
+ * @cal_client: Client to remove.
  * @immediately: Indicates whether use thread or do it right now.
  */
 
 void
-alarm_queue_remove_client (ECal *client, gboolean immediately)
+alarm_queue_remove_client (ECalClient *cal_client, gboolean immediately)
 {
 	struct _alarm_client_msg *msg;
 
 	msg = g_slice_new0 (struct _alarm_client_msg);
 	msg->header.func = (MessageFunc) alarm_queue_remove_async;
-	msg->client = client;
+	msg->cal_client = cal_client;
 
 	if (immediately) {
 		alarm_queue_remove_async (msg);
@@ -2220,7 +2256,7 @@ update_cqa (CompQueuedAlarms *cqa, ECalComponent *newcomp)
 
 	debug (("Generating alarms between %s and %s", e_ctime (&from), e_ctime (&to)));
 	alarms = e_cal_util_generate_alarms_for_comp (newcomp, from, to, omit,
-					e_cal_resolve_tzid_cb, cqa->parent_client->client, zone);
+					e_cal_client_resolve_tzid_cb, cqa->parent_client->cal_client, zone);
 
 	/* Update auids in Queued Alarms*/
 	for (qa_list = cqa->queued_alarms; qa_list; qa_list = qa_list->next) {
diff --git a/calendar/gui/alarm-notify/alarm-queue.h b/calendar/gui/alarm-notify/alarm-queue.h
index c594e12a6b..e43027bd60 100644
--- a/calendar/gui/alarm-notify/alarm-queue.h
+++ b/calendar/gui/alarm-notify/alarm-queue.h
@@ -26,12 +26,12 @@
 #ifndef ALARM_QUEUE_H
 #define ALARM_QUEUE_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
 void alarm_queue_init (gpointer);
 void alarm_queue_done (void);
 
-void alarm_queue_add_client (ECal *client);
-void alarm_queue_remove_client (ECal *client, gboolean immediately);
+void alarm_queue_add_client (ECalClient *cal_client);
+void alarm_queue_remove_client (ECalClient *cal_client, gboolean immediately);
 
 #endif
diff --git a/calendar/gui/alarm-notify/config-data.c b/calendar/gui/alarm-notify/config-data.c
index 41207d48fb..b5e6faa923 100644
--- a/calendar/gui/alarm-notify/config-data.c
+++ b/calendar/gui/alarm-notify/config-data.c
@@ -259,7 +259,7 @@ config_data_get_notify_with_tray (void)
  * triggered while it was not running.
  **/
 void
-config_data_set_last_notification_time (ECal *cal, time_t t)
+config_data_set_last_notification_time (ECalClient *cal, time_t t)
 {
 	GConfClient *client;
 	time_t current_t, now = time (NULL);
@@ -267,7 +267,7 @@ config_data_set_last_notification_time (ECal *cal, time_t t)
 	g_return_if_fail (t != -1);
 
 	if (cal) {
-		ESource *source = e_cal_get_source (cal);
+		ESource *source = e_client_get_source (E_CLIENT (cal));
 		if (source) {
 			GTimeVal tmval = {0};
 			gchar *as_text;
@@ -301,13 +301,13 @@ config_data_set_last_notification_time (ECal *cal, time_t t)
  * Return value: The last saved value, or -1 if no value had been saved before.
  **/
 time_t
-config_data_get_last_notification_time (ECal *cal)
+config_data_get_last_notification_time (ECalClient *cal)
 {
 	GConfValue *value;
 	GConfClient *client;
 
 	if (cal) {
-		ESource *source = e_cal_get_source (cal);
+		ESource *source = e_client_get_source (E_CLIENT (cal));
 		if (source) {
 			const gchar *last_notified;
 
diff --git a/calendar/gui/alarm-notify/config-data.h b/calendar/gui/alarm-notify/config-data.h
index 85b2593a8b..1023609d6a 100644
--- a/calendar/gui/alarm-notify/config-data.h
+++ b/calendar/gui/alarm-notify/config-data.h
@@ -27,7 +27,7 @@
 #define CONFIG_DATA_H
 
 #include <libical/ical.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <gconf/gconf-client.h>
 #include <libedataserver/e-source-list.h>
 
@@ -37,10 +37,10 @@ gboolean	config_data_get_24_hour_format	(void);
 gboolean	config_data_get_notify_with_tray
 						(void);
 void		config_data_set_last_notification_time
-						(ECal *cal,
+						(ECalClient *cal,
 						 time_t t);
 time_t		config_data_get_last_notification_time
-						(ECal *cal);
+						(ECalClient *cal);
 void		config_data_save_blessed_program
 						(const gchar *program);
 gboolean	config_data_is_blessed_program	(const gchar *program);
diff --git a/calendar/gui/cal-editor-utils.c b/calendar/gui/cal-editor-utils.c
index c49e648883..4ddc3899b9 100644
--- a/calendar/gui/cal-editor-utils.c
+++ b/calendar/gui/cal-editor-utils.c
@@ -32,7 +32,7 @@
 
 /**
  * open_component_editor:
- * @client: Already opened #ECal, where to store the component
+ * @client: Already opened #ECalClient, where to store the component
  * @comp: #ECalComponent component to be stored
  * @is_new: Whether the @comp is a new component or an existing
  * @error: #GError for possible error reporting
@@ -45,7 +45,7 @@
  **/
 void
 open_component_editor (EShell *shell,
-                       ECal *client,
+                       ECalClient *client,
                        ECalComponent *comp,
                        gboolean is_new,
                        GError **error)
@@ -55,7 +55,7 @@ open_component_editor (EShell *shell,
 	CompEditor *editor = NULL;
 
 	g_return_if_fail (E_IS_SHELL (shell));
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (E_IS_CAL_CLIENT (client));
 	g_return_if_fail (E_IS_CAL_COMPONENT (comp));
 
 	id = e_cal_component_get_id (comp);
@@ -99,10 +99,7 @@ open_component_editor (EShell *shell,
 			break;
 		default:
 			if (error)
-				*error = g_error_new (
-					E_CALENDAR_ERROR,
-					E_CALENDAR_STATUS_INVALID_OBJECT,
-					"%s", _("Invalid object"));
+				*error = e_client_error_create (E_CLIENT_ERROR_INVALID_ARG, NULL);
 			break;
 		}
 
diff --git a/calendar/gui/cal-editor-utils.h b/calendar/gui/cal-editor-utils.h
index 00f24a5b33..26b2104ea4 100644
--- a/calendar/gui/cal-editor-utils.h
+++ b/calendar/gui/cal-editor-utils.h
@@ -20,14 +20,14 @@
 #ifndef CAL_EDITOR_UTILS_H
 #define CAL_EDITOR_UTILS_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 #include <shell/e-shell.h>
 
 G_BEGIN_DECLS
 
 void		open_component_editor		(EShell *shell,
-						 ECal *client,
+						 ECalClient *client,
 						 ECalComponent *comp,
 						 gboolean is_new,
 						 GError **error);
diff --git a/calendar/gui/calendar-config.h b/calendar/gui/calendar-config.h
index f905af4d40..61e92efae4 100644
--- a/calendar/gui/calendar-config.h
+++ b/calendar/gui/calendar-config.h
@@ -29,7 +29,7 @@
 #define _CALENDAR_CONFIG_H_
 
 #include <gdk/gdk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <gconf/gconf-client.h>
 #include <e-util/e-util-enums.h>
 
diff --git a/calendar/gui/comp-util.c b/calendar/gui/comp-util.c
index fbf9e7dc82..a6095d0bcc 100644
--- a/calendar/gui/comp-util.c
+++ b/calendar/gui/comp-util.c
@@ -32,8 +32,8 @@
 #include "comp-util.h"
 #include "dialogs/delete-comp.h"
 #include <libecal/e-cal-component.h>
+#include <libedataserverui/e-client-utils.h>
 #include "e-util/e-categories-config.h"
-#include "common/authentication.h"
 
 #include "gnome-cal.h"
 #include "shell/e-shell-window.h"
@@ -90,7 +90,7 @@ e_cal_component_compare_tzid (const gchar *tzid1, const gchar *tzid2)
 /**
  * cal_comp_util_compare_event_timezones:
  * @comp: A calendar component object.
- * @client: A #ECal.
+ * @client: A #ECalClient.
  *
  * Checks if the component uses the given timezone for both the start and
  * the end time, or if the UTC offsets of the start and end times are the same
@@ -101,7 +101,7 @@ e_cal_component_compare_tzid (const gchar *tzid1, const gchar *tzid2)
  **/
 gboolean
 cal_comp_util_compare_event_timezones (ECalComponent *comp,
-				       ECal *client,
+				       ECalClient *client,
 				       icaltimezone *zone)
 {
 	ECalComponentDateTime start_datetime, end_datetime;
@@ -151,8 +151,8 @@ cal_comp_util_compare_event_timezones (ECalComponent *comp,
 		/* If the TZIDs differ, we have to compare the UTC offsets
 		   of the start and end times, using their own timezones and
 		   the given timezone. */
-		if (!e_cal_get_timezone (client, start_datetime.tzid,
-					      &start_zone, NULL))
+		if (!e_cal_client_get_timezone_sync (client, start_datetime.tzid,
+					      &start_zone, NULL, NULL))
 			goto out;
 
 		if (start_datetime.value) {
@@ -166,8 +166,8 @@ cal_comp_util_compare_event_timezones (ECalComponent *comp,
 				goto out;
 		}
 
-		if (!e_cal_get_timezone (client, end_datetime.tzid,
-					      &end_zone, NULL))
+		if (!e_cal_client_get_timezone_sync (client, end_datetime.tzid,
+					      &end_zone, NULL, NULL))
 			goto out;
 
 		if (end_datetime.value) {
@@ -211,7 +211,7 @@ cal_comp_util_compare_event_timezones (ECalComponent *comp,
  * user cancelled the deletion.
  **/
 gboolean
-cal_comp_is_on_server (ECalComponent *comp, ECal *client)
+cal_comp_is_on_server (ECalComponent *comp, ECalClient *client)
 {
 	const gchar *uid;
 	gchar *rid = NULL;
@@ -221,7 +221,7 @@ cal_comp_is_on_server (ECalComponent *comp, ECal *client)
 	g_return_val_if_fail (comp != NULL, FALSE);
 	g_return_val_if_fail (E_IS_CAL_COMPONENT (comp), FALSE);
 	g_return_val_if_fail (client != NULL, FALSE);
-	g_return_val_if_fail (E_IS_CAL (client), FALSE);
+	g_return_val_if_fail (E_IS_CAL_CLIENT (client), FALSE);
 
 	/* See if the component is on the server.  If it is not, then it likely
 	 * means that the appointment is new, only in the day view, and we
@@ -234,19 +234,18 @@ cal_comp_is_on_server (ECalComponent *comp, ECal *client)
 	/* TODO We should not be checking for this here. But since
 	 *      e_cal_util_construct_instance does not create the instances
 	 *      of all day events, so we default to old behaviour. */
-	if (e_cal_get_static_capability (
-		client, CAL_STATIC_CAPABILITY_RECURRENCES_NO_MASTER)) {
+	if (e_cal_client_check_recurrences_no_master (client)) {
 		rid = e_cal_component_get_recurid_as_string (comp);
 	}
 
-	if (e_cal_get_object (client, uid, rid, &icalcomp, &error)) {
+	if (e_cal_client_get_object_sync (client, uid, rid, &icalcomp, NULL, &error)) {
 		icalcomponent_free (icalcomp);
 		g_free (rid);
 
 		return TRUE;
 	}
 
-	if (error->code != E_CALENDAR_STATUS_OBJECT_NOT_FOUND)
+	if (!g_error_matches (error, E_CAL_CLIENT_ERROR, E_CAL_CLIENT_ERROR_OBJECT_NOT_FOUND))
 		g_warning (G_STRLOC ": %s", error->message);
 
 	g_clear_error (&error);
@@ -261,7 +260,7 @@ cal_comp_is_on_server (ECalComponent *comp, ECal *client)
  * icalcomponent, not the ECalComponent.
  **/
 gboolean
-is_icalcomp_on_the_server (icalcomponent *icalcomp, ECal *client)
+is_icalcomp_on_the_server (icalcomponent *icalcomp, ECalClient *client)
 {
 	gboolean on_server;
 	ECalComponent *comp;
@@ -288,7 +287,7 @@ is_icalcomp_on_the_server (icalcomponent *icalcomp, ECal *client)
  * Return value: A newly-created calendar component.
  **/
 ECalComponent *
-cal_comp_event_new_with_defaults (ECal *client,
+cal_comp_event_new_with_defaults (ECalClient *client,
                                   gboolean all_day,
                                   gboolean use_default_reminder,
                                   gint default_reminder_interval,
@@ -300,7 +299,7 @@ cal_comp_event_new_with_defaults (ECal *client,
 	icalproperty *icalprop;
 	ECalComponentAlarmTrigger trigger;
 
-	if (!e_cal_get_default_object (client, &icalcomp, NULL))
+	if (!e_cal_client_get_default_object_sync (client, &icalcomp, NULL, NULL))
 		icalcomp = icalcomponent_new (ICAL_VEVENT_COMPONENT);
 
 	comp = e_cal_component_new ();
@@ -358,7 +357,7 @@ cal_comp_event_new_with_defaults (ECal *client,
 }
 
 ECalComponent *
-cal_comp_event_new_with_current_time (ECal *client,
+cal_comp_event_new_with_current_time (ECalClient *client,
                                       gboolean all_day,
                                       icaltimezone *zone,
                                       gboolean use_default_reminder,
@@ -398,12 +397,12 @@ cal_comp_event_new_with_current_time (ECal *client,
 }
 
 ECalComponent *
-cal_comp_task_new_with_defaults (ECal *client)
+cal_comp_task_new_with_defaults (ECalClient *client)
 {
 	ECalComponent *comp;
 	icalcomponent *icalcomp;
 
-	if (!e_cal_get_default_object (client, &icalcomp, NULL))
+	if (!e_cal_client_get_default_object_sync (client, &icalcomp, NULL, NULL))
 		icalcomp = icalcomponent_new (ICAL_VTODO_COMPONENT);
 
 	comp = e_cal_component_new ();
@@ -417,12 +416,12 @@ cal_comp_task_new_with_defaults (ECal *client)
 }
 
 ECalComponent *
-cal_comp_memo_new_with_defaults (ECal *client)
+cal_comp_memo_new_with_defaults (ECalClient *client)
 {
 	ECalComponent *comp;
 	icalcomponent *icalcomp;
 
-	if (!e_cal_get_default_object (client, &icalcomp, NULL))
+	if (!e_cal_client_get_default_object_sync (client, &icalcomp, NULL, NULL))
 		icalcomp = icalcomponent_new (ICAL_VJOURNAL_COMPONENT);
 
 	comp = e_cal_component_new ();
@@ -613,7 +612,7 @@ cal_comp_selection_get_string_list (GtkSelectionData *selection_data)
 }
 
 static void
-datetime_to_zone (ECal *client, ECalComponentDateTime *date, const gchar *tzid)
+datetime_to_zone (ECalClient *client, ECalComponentDateTime *date, const gchar *tzid)
 {
 	icaltimezone *from, *to;
 
@@ -625,16 +624,21 @@ datetime_to_zone (ECal *client, ECalComponentDateTime *date, const gchar *tzid)
 
 	from = icaltimezone_get_builtin_timezone_from_tzid (date->tzid);
 	if (!from) {
-		if (!e_cal_get_timezone (client, date->tzid, &from, NULL))
+		GError *error = NULL;
+
+		if (!e_cal_client_get_timezone_sync (client, date->tzid, &from, NULL, &error))
 			g_warning (
-				"%s: Could not get timezone from server: %s",
-				G_STRFUNC, date->tzid ? date->tzid : "");
+				"%s: Could not get timezone '%s' from server: %s",
+				G_STRFUNC, date->tzid ? date->tzid : "", error ? error->message : "Unknown error");
+
+		if (error)
+			g_error_free (error);
 	}
 
 	to = icaltimezone_get_builtin_timezone_from_tzid (tzid);
 	if (!to) {
 		/* do not check failure here, maybe the zone is not available there */
-		e_cal_get_timezone (client, tzid, &to, NULL);
+		e_cal_client_get_timezone_sync (client, tzid, &to, NULL, NULL);
 	}
 
 	icaltimezone_convert_time (date->value, from, to);
@@ -643,14 +647,14 @@ datetime_to_zone (ECal *client, ECalComponentDateTime *date, const gchar *tzid)
 
 /**
  * cal_comp_set_dtstart_with_oldzone:
- * @client: ECal structure, to retrieve timezone from, when required.
+ * @client: ECalClient structure, to retrieve timezone from, when required.
  * @comp: Component, where make the change.
  * @pdate: Value, to change to.
  *
  * Changes 'dtstart' of the component, but converts time to the old timezone.
  **/
 void
-cal_comp_set_dtstart_with_oldzone (ECal *client,
+cal_comp_set_dtstart_with_oldzone (ECalClient *client,
                                    ECalComponent *comp,
                                    const ECalComponentDateTime *pdate)
 {
@@ -671,14 +675,14 @@ cal_comp_set_dtstart_with_oldzone (ECal *client,
 
 /**
  * cal_comp_set_dtend_with_oldzone:
- * @client: ECal structure, to retrieve timezone from, when required.
+ * @client: ECalClient structure, to retrieve timezone from, when required.
  * @comp: Component, where make the change.
  * @pdate: Value, to change to.
  *
  * Changes 'dtend' of the component, but converts time to the old timezone.
  **/
 void
-cal_comp_set_dtend_with_oldzone (ECal *client,
+cal_comp_set_dtend_with_oldzone (ECalClient *client,
                                  ECalComponent *comp,
                                  const ECalComponentDateTime *pdate)
 {
@@ -699,18 +703,21 @@ cal_comp_set_dtend_with_oldzone (ECal *client,
 
 void
 comp_util_sanitize_recurrence_master (ECalComponent *comp,
-                                      ECal *client)
+                                      ECalClient *client)
 {
 	ECalComponent *master = NULL;
 	icalcomponent *icalcomp = NULL;
 	ECalComponentRange rid;
 	ECalComponentDateTime sdt;
 	const gchar *uid;
+	GError *error = NULL;
 
 	/* Get the master component */
 	e_cal_component_get_uid (comp, &uid);
-	if (!e_cal_get_object (client, uid, NULL, &icalcomp, NULL)) {
-		g_warning ("Unable to get the master component \n");
+	if (!e_cal_client_get_object_sync (client, uid, NULL, &icalcomp, NULL, &error)) {
+		g_warning ("Unable to get the master component: %s", error ? error->message : "Unknown error");
+		if (error)
+			g_error_free (error);
 		return;
 	}
 
diff --git a/calendar/gui/comp-util.h b/calendar/gui/comp-util.h
index c99e1d0c3f..1f69ddb107 100644
--- a/calendar/gui/comp-util.h
+++ b/calendar/gui/comp-util.h
@@ -27,7 +27,7 @@
 
 #include <gtk/gtk.h>
 #include <libecal/e-cal-component.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <e-util/e-util-enums.h>
 
 struct _EShell;
@@ -38,41 +38,41 @@ void cal_comp_util_add_exdate (ECalComponent *comp, time_t t, icaltimezone *zone
    and DTEND, or if the UTC offsets of the start and end times are the same
    as in the given zone. */
 gboolean cal_comp_util_compare_event_timezones (ECalComponent *comp,
-						ECal *client,
+						ECalClient *client,
 						icaltimezone *zone);
 
 /* Returns the number of icons owned by the ECalComponent */
 gint     cal_comp_util_get_n_icons (ECalComponent *comp, GSList **pixbufs);
 
 gboolean cal_comp_is_on_server (ECalComponent *comp,
-				ECal *client);
-gboolean is_icalcomp_on_the_server (icalcomponent *icalcomp, ECal *client);
+				ECalClient *client);
+gboolean is_icalcomp_on_the_server (icalcomponent *icalcomp, ECalClient *client);
 
 ECalComponent *	cal_comp_event_new_with_defaults
-						(ECal *client,
+						(ECalClient *client,
 						 gboolean all_day,
 						 gboolean use_default_reminder,
 						 gint default_reminder_interval,
 						 EDurationType default_reminder_units);
 ECalComponent *	cal_comp_event_new_with_current_time
-						(ECal *client,
+						(ECalClient *client,
 						 gboolean all_day,
 						 icaltimezone *zone,
 						 gboolean use_default_reminder,
 						 gint default_reminder_interval,
 						 EDurationType default_reminder_units);
-ECalComponent *cal_comp_task_new_with_defaults (ECal *client);
-ECalComponent *cal_comp_memo_new_with_defaults (ECal *client);
+ECalComponent *cal_comp_task_new_with_defaults (ECalClient *client);
+ECalComponent *cal_comp_memo_new_with_defaults (ECalClient *client);
 
 void cal_comp_update_time_by_active_window (ECalComponent *comp, struct _EShell *shell);
 
 void    cal_comp_selection_set_string_list (GtkSelectionData *data, GSList *str_list);
 GSList *cal_comp_selection_get_string_list (GtkSelectionData *data);
 
-void cal_comp_set_dtstart_with_oldzone (ECal *client, ECalComponent *comp, const ECalComponentDateTime *pdate);
-void cal_comp_set_dtend_with_oldzone (ECal *client, ECalComponent *comp, const ECalComponentDateTime *pdate);
+void cal_comp_set_dtstart_with_oldzone (ECalClient *client, ECalComponent *comp, const ECalComponentDateTime *pdate);
+void cal_comp_set_dtend_with_oldzone (ECalClient *client, ECalComponent *comp, const ECalComponentDateTime *pdate);
 
-void comp_util_sanitize_recurrence_master (ECalComponent *comp, ECal *client);
+void comp_util_sanitize_recurrence_master (ECalComponent *comp, ECalClient *client);
 
 gchar *icalcomp_suggest_filename (icalcomponent *icalcomp, const gchar *default_name);
 
diff --git a/calendar/gui/dialogs/alarm-dialog.c b/calendar/gui/dialogs/alarm-dialog.c
index 6b234f6cce..564c4dd1f4 100644
--- a/calendar/gui/dialogs/alarm-dialog.c
+++ b/calendar/gui/dialogs/alarm-dialog.c
@@ -54,7 +54,7 @@ typedef struct {
 	ECalComponentAlarm *alarm;
 
 	/* The client */
-	ECal *ecal;
+	ECalClient *cal_client;
 
 	/* Toplevel */
 	GtkWidget *toplevel;
@@ -209,16 +209,16 @@ alarm_to_dialog (Dialog *dialog)
 	for (i = 0; valid && action_map[i] != -1; i++) {
 		gtk_list_store_set (
 			GTK_LIST_STORE (model), &iter,
-			1, !e_cal_get_static_capability (dialog->ecal, action_map_cap[i]),
+			1, !e_client_check_capability (E_CLIENT (dialog->cal_client), action_map_cap[i]),
 			-1);
 
 		valid = gtk_tree_model_iter_next (model, &iter);
 	}
 
 	/* Set a default address if possible */
-	if (!e_cal_get_static_capability (dialog->ecal, CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS)
-		&& !e_cal_component_alarm_has_attendees (dialog->alarm)
-	    && e_cal_get_alarm_email_address (dialog->ecal, &email, NULL)) {
+	if (!e_client_check_capability (E_CLIENT (dialog->cal_client), CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS)
+	    && !e_cal_component_alarm_has_attendees (dialog->alarm)
+	    && e_client_get_backend_property_sync (E_CLIENT (dialog->cal_client), CAL_BACKEND_PROPERTY_ALARM_EMAIL_ADDRESS, &email, NULL, NULL)) {
 		ECalComponentAttendee *a;
 		GSList attendee_list;
 
@@ -235,7 +235,7 @@ alarm_to_dialog (Dialog *dialog)
 	}
 
 	/* If we can repeat */
-	repeat = !e_cal_get_static_capability (dialog->ecal, CAL_STATIC_CAPABILITY_NO_ALARM_REPEAT);
+	repeat = !e_client_check_capability (E_CLIENT (dialog->cal_client), CAL_STATIC_CAPABILITY_NO_ALARM_REPEAT);
 	gtk_widget_set_sensitive (dialog->repeat_toggle, repeat);
 
 	/* if we are editing a exiting alarm */
@@ -880,27 +880,6 @@ get_widgets (Dialog *dialog)
 		&& dialog->palarm_args);
 }
 
-#if 0
-/* Callback used when the alarm options button is clicked */
-static void
-show_options (Dialog *dialog)
-{
-	gboolean repeat;
-	gchar *email;
-
-	e_cal_component_alarm_set_action (dialog->alarm,
-					e_dialog_combo_box_get (dialog->action_combo, action_map));
-
-	repeat = !e_cal_get_static_capability (dialog->ecal, CAL_STATIC_CAPABILITY_NO_ALARM_REPEAT);
-
-	if (e_cal_get_static_capability (dialog->ecal, CAL_STATIC_CAPABILITY_NO_EMAIL_ALARMS)
-	    || e_cal_get_alarm_email_address (dialog->ecal, &email, NULL)) {
-		if (!alarm_options_dialog_run (dialog->toplevel, dialog->alarm, email, repeat))
-			g_message (G_STRLOC ": not create the alarm options dialog");
-	}
-}
-#endif
-
 static void
 addressbook_clicked_cb (GtkWidget *widget, Dialog *dialog)
 {
@@ -1202,7 +1181,7 @@ init_widgets (Dialog *dialog)
 }
 
 gboolean
-alarm_dialog_run (GtkWidget *parent, ECal *ecal, ECalComponentAlarm *alarm)
+alarm_dialog_run (GtkWidget *parent, ECalClient *cal_client, ECalComponentAlarm *alarm)
 {
 	Dialog dialog;
 	GtkWidget *container;
@@ -1211,7 +1190,7 @@ alarm_dialog_run (GtkWidget *parent, ECal *ecal, ECalComponentAlarm *alarm)
 	g_return_val_if_fail (alarm != NULL, FALSE);
 
 	dialog.alarm = alarm;
-	dialog.ecal = ecal;
+	dialog.cal_client = cal_client;
 
 	dialog.builder = gtk_builder_new ();
 	e_load_ui_builder_definition (dialog.builder, "alarm-dialog.ui");
diff --git a/calendar/gui/dialogs/alarm-dialog.h b/calendar/gui/dialogs/alarm-dialog.h
index b5560f9ff4..d99d47f15f 100644
--- a/calendar/gui/dialogs/alarm-dialog.h
+++ b/calendar/gui/dialogs/alarm-dialog.h
@@ -30,12 +30,12 @@
 #ifndef ALARM_DIALOG_H
 #define ALARM_DIALOG_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 
 G_BEGIN_DECLS
 
-gboolean alarm_dialog_run (GtkWidget *parent, ECal *ecal, ECalComponentAlarm *alarm);
+gboolean alarm_dialog_run (GtkWidget *parent, ECalClient *cal_client, ECalComponentAlarm *alarm);
 
 G_END_DECLS
 
diff --git a/calendar/gui/dialogs/alarm-list-dialog.c b/calendar/gui/dialogs/alarm-list-dialog.c
index 1990e076df..3e854da751 100644
--- a/calendar/gui/dialogs/alarm-list-dialog.c
+++ b/calendar/gui/dialogs/alarm-list-dialog.c
@@ -48,7 +48,7 @@ typedef struct {
 	GtkBuilder *builder;
 
 	/* The client */
-	ECal *ecal;
+	ECalClient *cal_client;
 
 	/* The list store */
 	EAlarmList *list_store;
@@ -94,18 +94,13 @@ sensitize_buttons (Dialog *dialog)
 	GtkTreeSelection *selection;
 	GtkTreeIter iter;
 	gboolean have_selected, read_only = FALSE;
-	GError *error = NULL;
 
-	if (!e_cal_is_read_only (dialog->ecal, &read_only, &error)) {
-		if (error->code != E_CALENDAR_STATUS_BUSY)
-			read_only = TRUE;
-		g_error_free (error);
-	}
+	read_only = e_client_is_readonly (E_CLIENT (dialog->cal_client));
 
 	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->list));
 	have_selected = gtk_tree_selection_get_selected (selection, NULL, &iter);
 
-	if ((e_cal_get_one_alarm_only (dialog->ecal) && have_selected) || read_only)
+	if ((e_cal_client_check_one_alarm_only (dialog->cal_client) && have_selected) || read_only)
 		gtk_widget_set_sensitive (dialog->add, FALSE);
 	else
 		gtk_widget_set_sensitive (dialog->add, TRUE);
@@ -133,7 +128,7 @@ add_clicked_cb (GtkButton *button, gpointer data)
 	icalproperty_set_x_name (icalprop, "X-EVOLUTION-NEEDS-DESCRIPTION");
 	icalcomponent_add_property (icalcomp, icalprop);
 
-	if (alarm_dialog_run (dialog->toplevel, dialog->ecal, alarm)) {
+	if (alarm_dialog_run (dialog->toplevel, dialog->cal_client, alarm)) {
 		e_alarm_list_append (dialog->list_store, &iter, alarm);
 		gtk_tree_selection_select_iter (gtk_tree_view_get_selection (view), &iter);
 	} else {
@@ -165,7 +160,7 @@ edit_clicked_cb (GtkButton *button, gpointer data)
 	alarm = (ECalComponentAlarm *) e_alarm_list_get_alarm (dialog->list_store, &iter);
 	path = gtk_tree_model_get_path (GTK_TREE_MODEL (dialog->list_store), &iter);
 
-	if (alarm_dialog_run (dialog->toplevel, dialog->ecal, alarm)) {
+	if (alarm_dialog_run (dialog->toplevel, dialog->cal_client, alarm)) {
 		gtk_tree_selection_select_iter (gtk_tree_view_get_selection (view), &iter);
 		gtk_tree_model_row_changed (GTK_TREE_MODEL (dialog->list_store), path, &iter);
 	}
@@ -216,7 +211,7 @@ selection_changed_cb (GtkTreeSelection *selection, gpointer data)
 }
 
 void
-alarm_list_dialog_set_client (GtkWidget *dlg_box, ECal *client)
+alarm_list_dialog_set_client (GtkWidget *dlg_box, ECalClient *cal_client)
 {
 	Dialog *dialog;
 
@@ -224,7 +219,7 @@ alarm_list_dialog_set_client (GtkWidget *dlg_box, ECal *client)
 
 	dialog = g_object_get_data (G_OBJECT (dlg_box), "dialog");
 	if (dialog) {
-		dialog->ecal = client;
+		dialog->cal_client = cal_client;
 		sensitize_buttons (dialog);
 	}
 }
@@ -267,13 +262,13 @@ init_widgets (Dialog *dialog)
 }
 
 gboolean
-alarm_list_dialog_run (GtkWidget *parent, ECal *ecal, EAlarmList *list_store)
+alarm_list_dialog_run (GtkWidget *parent, ECalClient *cal_client, EAlarmList *list_store)
 {
 	Dialog dialog;
 	GtkWidget *container;
 	gint response_id;
 
-	dialog.ecal = ecal;
+	dialog.cal_client = cal_client;
 	dialog.list_store = list_store;
 
 	dialog.builder = gtk_builder_new ();
@@ -313,12 +308,12 @@ alarm_list_dialog_run (GtkWidget *parent, ECal *ecal, EAlarmList *list_store)
 }
 
 GtkWidget *
-alarm_list_dialog_peek (ECal *ecal, EAlarmList *list_store)
+alarm_list_dialog_peek (ECalClient *cal_client, EAlarmList *list_store)
 {
 	Dialog *dialog;
 
 	dialog = (Dialog *) g_new (Dialog, 1);
-	dialog->ecal = ecal;
+	dialog->cal_client = cal_client;
 	dialog->list_store = list_store;
 
 	dialog->builder = gtk_builder_new ();
diff --git a/calendar/gui/dialogs/alarm-list-dialog.h b/calendar/gui/dialogs/alarm-list-dialog.h
index 7d58fcb0af..163582c556 100644
--- a/calendar/gui/dialogs/alarm-list-dialog.h
+++ b/calendar/gui/dialogs/alarm-list-dialog.h
@@ -30,15 +30,15 @@
 #ifndef ALARM_LIST_DIALOG_H
 #define ALARM_LIST_DIALOG_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 #include "../e-alarm-list.h"
 
 G_BEGIN_DECLS
 
-gboolean alarm_list_dialog_run (GtkWidget *parent, ECal *ecal, EAlarmList *list_store);
-GtkWidget *alarm_list_dialog_peek (ECal *ecal, EAlarmList *list_store);
-void alarm_list_dialog_set_client (GtkWidget *dlg_box, ECal *client);
+gboolean alarm_list_dialog_run (GtkWidget *parent, ECalClient *cal_client, EAlarmList *list_store);
+GtkWidget *alarm_list_dialog_peek (ECalClient *cal_client, EAlarmList *list_store);
+void alarm_list_dialog_set_client (GtkWidget *dlg_box, ECalClient *cal_client);
 
 G_END_DECLS
 
diff --git a/calendar/gui/dialogs/calendar-setup.c b/calendar/gui/dialogs/calendar-setup.c
index 5981076ee6..231cd0dd34 100644
--- a/calendar/gui/dialogs/calendar-setup.c
+++ b/calendar/gui/dialogs/calendar-setup.c
@@ -32,7 +32,7 @@
 #include <libedataserver/e-source-list.h>
 #include <shell/e-shell.h>
 #include <glib/gi18n.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include "calendar-setup.h"
 #include "../e-cal-config.h"
 
@@ -55,7 +55,7 @@ struct _CalendarSourceDialog {
 
 	/* Source group we're creating/editing a source in */
 	ESourceGroup *source_group;
-	ECalSourceType source_type;
+	ECalClientSourceType source_type;
 };
 
 static gboolean
@@ -272,11 +272,11 @@ eccp_general_offline (EConfig *ec, EConfigItem *item, GtkWidget *parent, GtkWidg
 	else {
 		g_object_get (parent, "n-rows", &row, NULL);
 
-		if (sdialog->source_type == E_CAL_SOURCE_TYPE_EVENT)
+		if (sdialog->source_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS)
 			offline_setting = gtk_check_button_new_with_mnemonic (_("Cop_y calendar contents locally for offline operation"));
-		else if (sdialog->source_type == E_CAL_SOURCE_TYPE_TODO)
+		else if (sdialog->source_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS)
 			offline_setting = gtk_check_button_new_with_mnemonic (_("Cop_y task list contents locally for offline operation"));
-		else if (sdialog->source_type == E_CAL_SOURCE_TYPE_JOURNAL)
+		else if (sdialog->source_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS)
 			offline_setting = gtk_check_button_new_with_mnemonic (_("Cop_y memo list contents locally for offline operation"));
 
 		gtk_widget_show (offline_setting);
@@ -469,7 +469,7 @@ calendar_setup_edit_calendar (GtkWindow *parent, ESource *source, ESourceGroup *
 	e_source_set_absolute_uri (sdialog->source, NULL);
 	e_source_set_group (sdialog->source, sdialog->source_group);
 
-	sdialog->source_type = E_CAL_SOURCE_TYPE_EVENT;
+	sdialog->source_type = E_CAL_CLIENT_SOURCE_TYPE_EVENTS;
 	sdialog->config = ec = e_cal_config_new (E_CONFIG_BOOK, "org.gnome.evolution.calendar.calendarProperties");
 	for (i = 0; eccp_items[i].path; i++)
 		items = g_slist_prepend (items, &eccp_items[i]);
@@ -477,7 +477,7 @@ calendar_setup_edit_calendar (GtkWindow *parent, ESource *source, ESourceGroup *
 	e_config_add_page_check ((EConfig *) ec, NULL, eccp_check_complete, sdialog);
 
 	target = e_cal_config_target_new_source (ec, sdialog->source);
-	target->source_type = E_CAL_SOURCE_TYPE_EVENT;
+	target->source_type = E_CAL_CLIENT_SOURCE_TYPE_EVENTS;
 	e_config_set_target ((EConfig *) ec, (EConfigTarget *) target);
 
 	sdialog->window = e_config_create_window ((EConfig *)ec, NULL, source ? _("Calendar Properties") : _("New Calendar"));
@@ -525,7 +525,7 @@ calendar_setup_edit_task_list (GtkWindow *parent, ESource *source)
 	e_source_set_absolute_uri (sdialog->source, NULL);
 	e_source_set_group (sdialog->source, sdialog->source_group);
 
-	sdialog->source_type = E_CAL_SOURCE_TYPE_TODO;
+	sdialog->source_type = E_CAL_CLIENT_SOURCE_TYPE_TASKS;
 	sdialog->config = ec = e_cal_config_new (E_CONFIG_BOOK, "org.gnome.evolution.calendar.calendarProperties");
 	for (i = 0; ectp_items[i].path; i++)
 		items = g_slist_prepend (items, &ectp_items[i]);
@@ -533,7 +533,7 @@ calendar_setup_edit_task_list (GtkWindow *parent, ESource *source)
 	e_config_add_page_check ((EConfig *) ec, NULL, eccp_check_complete, sdialog);
 
 	target = e_cal_config_target_new_source (ec, sdialog->source);
-	target->source_type = E_CAL_SOURCE_TYPE_TODO;
+	target->source_type = E_CAL_CLIENT_SOURCE_TYPE_TASKS;
 	e_config_set_target ((EConfig *) ec, (EConfigTarget *) target);
 
 	sdialog->window = e_config_create_window ((EConfig *)ec, NULL, source ? _("Task List Properties") : _("New Task List"));
@@ -581,7 +581,7 @@ calendar_setup_edit_memo_list (GtkWindow *parent, ESource *source)
 	e_source_set_absolute_uri (sdialog->source, NULL);
 	e_source_set_group (sdialog->source, sdialog->source_group);
 
-	sdialog->source_type = E_CAL_SOURCE_TYPE_JOURNAL;
+	sdialog->source_type = E_CAL_CLIENT_SOURCE_TYPE_MEMOS;
 	sdialog->config = ec = e_cal_config_new (E_CONFIG_BOOK, "org.gnome.evolution.calendar.calendarProperties");
 	for (i = 0; ecmp_items[i].path; i++)
 		items = g_slist_prepend (items, &ecmp_items[i]);
@@ -589,7 +589,7 @@ calendar_setup_edit_memo_list (GtkWindow *parent, ESource *source)
 	e_config_add_page_check ((EConfig *) ec, NULL, eccp_check_complete, sdialog);
 
 	target = e_cal_config_target_new_source (ec, sdialog->source);
-	target->source_type = E_CAL_SOURCE_TYPE_JOURNAL;
+	target->source_type = E_CAL_CLIENT_SOURCE_TYPE_MEMOS;
 	e_config_set_target ((EConfig *) ec, (EConfigTarget *) target);
 
 	sdialog->window = e_config_create_window ((EConfig *)ec, NULL, source ? _("Memo List Properties") : _("New Memo List"));
diff --git a/calendar/gui/dialogs/cancel-comp.c b/calendar/gui/dialogs/cancel-comp.c
index 4482d4d7ab..86663eda97 100644
--- a/calendar/gui/dialogs/cancel-comp.c
+++ b/calendar/gui/dialogs/cancel-comp.c
@@ -66,14 +66,14 @@ is_past_event (ECalComponent *comp)
  **/
 gboolean
 cancel_component_dialog (GtkWindow *parent,
-                         ECal *client,
+                         ECalClient *cal_client,
                          ECalComponent *comp,
                          gboolean deleting)
 {
 	ECalComponentVType vtype;
 	const gchar *id;
 
-	if (deleting && e_cal_get_save_schedules (client))
+	if (deleting && e_cal_client_check_save_schedules (cal_client))
 		return TRUE;
 
 	vtype = e_cal_component_get_vtype (comp);
diff --git a/calendar/gui/dialogs/cancel-comp.h b/calendar/gui/dialogs/cancel-comp.h
index db455b06d7..3514cf19f5 100644
--- a/calendar/gui/dialogs/cancel-comp.h
+++ b/calendar/gui/dialogs/cancel-comp.h
@@ -26,9 +26,9 @@
 #ifndef CANCEL_COMP_H
 #define CANCEL_COMP_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 
-gboolean cancel_component_dialog (GtkWindow *parent, ECal *client, ECalComponent *comp, gboolean deleting);
+gboolean cancel_component_dialog (GtkWindow *parent, ECalClient *cal_client, ECalComponent *comp, gboolean deleting);
 
 #endif
diff --git a/calendar/gui/dialogs/comp-editor-page.h b/calendar/gui/dialogs/comp-editor-page.h
index 2b9f7a4467..a33d83810d 100644
--- a/calendar/gui/dialogs/comp-editor-page.h
+++ b/calendar/gui/dialogs/comp-editor-page.h
@@ -28,7 +28,7 @@
 #include <time.h>
 #include <gtk/gtk.h>
 #include <libecal/e-cal-component.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
 #include <calendar/gui/e-meeting-attendee.h>
 
diff --git a/calendar/gui/dialogs/comp-editor.c b/calendar/gui/dialogs/comp-editor.c
index cc794ae3f5..21ac86e9c3 100644
--- a/calendar/gui/dialogs/comp-editor.c
+++ b/calendar/gui/dialogs/comp-editor.c
@@ -43,6 +43,9 @@
 #include <e-util/gconf-bridge.h>
 #include <shell/e-shell.h>
 
+#include <libecal/e-cal-client.h>
+#include <libecal/e-cal-client-view.h>
+
 #include "../print.h"
 #include "../comp-util.h"
 #include "save-comp.h"
@@ -75,13 +78,14 @@ struct _CompEditorPrivate {
 	GtkWindowGroup *window_group;
 
 	/* Client to use */
-	ECal *client;
+	ECalClient *cal_client;
 
 	/* Source client (where comp lives currently) */
-	ECal *source_client;
+	ECalClient *source_client;
 
 	/* View to listen for changes */
-	ECalView *view;
+	ECalClientView *view;
+	GCancellable *view_cancellable;
 
 	/* Calendar object/uid we are editing; this is an internal copy */
 	ECalComponent *comp;
@@ -198,8 +202,8 @@ static void	page_dates_changed_cb		(CompEditor *editor,
 						 CompEditorPageDates *dates,
 						 CompEditorPage *page);
 
-static void obj_modified_cb (ECal *client, GList *objs, CompEditor *editor);
-static void obj_removed_cb (ECal *client, GList *uids, CompEditor *editor);
+static void obj_modified_cb (ECalClientView *view, const GSList *objs, CompEditor *editor);
+static void obj_removed_cb (ECalClientView *view, const GSList *uids, CompEditor *editor);
 
 G_DEFINE_TYPE_WITH_CODE (
 	CompEditor, comp_editor, GTK_TYPE_WINDOW,
@@ -303,7 +307,7 @@ get_attachment_list (CompEditor *editor)
 	view = E_ATTACHMENT_VIEW (editor->priv->attachment_view);
 	store = e_attachment_view_get_store (view);
 
-	local_store = e_cal_get_local_attachment_store (editor->priv->client);
+	local_store = e_cal_client_get_local_attachment_store (editor->priv->cal_client);
 	e_cal_component_get_uid (editor->priv->comp, &comp_uid);
 	path = g_build_path ("/", local_store, comp_uid, NULL);
 	destination = g_file_new_for_path (path);
@@ -344,6 +348,40 @@ commit_all_fields (CompEditor *editor)
 }
 
 static void
+changes_view_ready_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	CompEditor *editor = user_data;
+	ECalClientView *view = NULL;
+	GError *error = NULL;
+
+	g_return_if_fail (editor != NULL);
+
+	if (!e_cal_client_get_view_finish (E_CAL_CLIENT (source_object), result, &view, &error))
+		view = NULL;
+
+	if (view) {
+		editor->priv->view = view;
+		g_signal_connect (
+			view, "objects_modified",
+			G_CALLBACK (obj_modified_cb), editor);
+		g_signal_connect (
+			view, "objects_removed",
+			G_CALLBACK (obj_removed_cb), editor);
+
+		e_cal_client_view_start (view, &error);
+
+		if (error) {
+			g_debug ("%s: Failed to stat view: %s", G_STRFUNC, error->message);
+			g_error_free (error);
+		}
+	} else if (error) {
+		if (!g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_CANCELLED))
+			g_debug ("%s: Failed to get view: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
+}
+
+static void
 listen_for_changes (CompEditor *editor)
 {
 	CompEditorPrivate *priv;
@@ -352,6 +390,12 @@ listen_for_changes (CompEditor *editor)
 	priv = editor->priv;
 
 	/* Discard change listener */
+	if (priv->view_cancellable) {
+		g_cancellable_cancel (priv->view_cancellable);
+		g_object_unref (priv->view_cancellable);
+		priv->view_cancellable = NULL;
+	}
+
 	if (priv->view) {
 		g_signal_handlers_disconnect_matched (G_OBJECT (priv->view),
 						      G_SIGNAL_MATCH_DATA,
@@ -369,21 +413,11 @@ listen_for_changes (CompEditor *editor)
 	if (uid) {
 		gchar *query;
 
+		priv->view_cancellable = g_cancellable_new ();
 		query = g_strdup_printf ("(uid? \"%s\")", uid);
-		e_cal_get_query (priv->source_client, query, &priv->view, NULL);
+		e_cal_client_get_view (priv->source_client, query, priv->view_cancellable, changes_view_ready_cb, editor);
 		g_free (query);
 	}
-
-	if (priv->view) {
-		g_signal_connect (
-			priv->view, "objects_modified",
-			G_CALLBACK (obj_modified_cb), editor);
-		g_signal_connect (
-			priv->view, "objects_removed",
-			G_CALLBACK (obj_removed_cb), editor);
-
-		e_cal_view_start (priv->view);
-	}
 }
 
 static void
@@ -391,8 +425,14 @@ send_timezone (gpointer key, gpointer value, gpointer user_data)
 {
 	icaltimezone *zone = value;
 	CompEditor *editor = user_data;
+	GError *error = NULL;
+
+	e_cal_client_add_timezone_sync (editor->priv->cal_client, zone, NULL, &error);
 
-	e_cal_add_timezone (editor->priv->client, zone, NULL);
+	if (error) {
+		g_debug ("%s: Failed to add timezone: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
 }
 
 static gboolean
@@ -448,8 +488,8 @@ save_comp (CompEditor *editor)
 
 	/* If we are not the organizer, we don't update the sequence number */
 	if (!e_cal_component_has_organizer (clone) ||
-		itip_organizer_is_user (clone, priv->client) ||
-		itip_sentby_is_user (clone, priv->client))
+		itip_organizer_is_user (clone, priv->cal_client) ||
+		itip_sentby_is_user (clone, priv->cal_client))
 		e_cal_component_commit_sequence (clone);
 	else
 		e_cal_component_abort_sequence (clone);
@@ -472,10 +512,14 @@ save_comp (CompEditor *editor)
 		priv->comp, get_attachment_list (editor));
 	icalcomp = e_cal_component_get_icalcomponent (priv->comp);
 	/* send the component to the server */
-	if (!cal_comp_is_on_server (priv->comp, priv->client)) {
-		result = e_cal_create_object (priv->client, icalcomp, NULL, &error);
-		if (result)
+	if (!cal_comp_is_on_server (priv->comp, priv->cal_client)) {
+		gchar *uid = NULL;
+		result = e_cal_client_create_object_sync (priv->cal_client, icalcomp, &uid, NULL, &error);
+		if (result) {
+			icalcomponent_set_uid (icalcomp, uid);
+			g_free (uid);
 			g_signal_emit_by_name (editor, "object_created");
+		}
 	} else {
 		gboolean has_recurrences;
 
@@ -484,7 +528,7 @@ save_comp (CompEditor *editor)
 
 		if (has_recurrences && priv->mod == CALOBJ_MOD_ALL)
 			comp_util_sanitize_recurrence_master (
-				priv->comp, priv->client);
+				priv->comp, priv->cal_client);
 
 		if (priv->mod == CALOBJ_MOD_THIS) {
 			e_cal_component_set_rdate_list (priv->comp, NULL);
@@ -492,13 +536,13 @@ save_comp (CompEditor *editor)
 			e_cal_component_set_exdate_list (priv->comp, NULL);
 			e_cal_component_set_exrule_list (priv->comp, NULL);
 		}
-		result = e_cal_modify_object (priv->client, icalcomp, priv->mod, &error);
+		result = e_cal_client_modify_object_sync (priv->cal_client, icalcomp, priv->mod, NULL, &error);
 
 		if (priv->mod == CALOBJ_MOD_THIS) {
 			if (result && ((flags & COMP_EDITOR_DELEGATE) ||
 				!e_cal_component_has_organizer (clone) ||
-				itip_organizer_is_user (clone, priv->client) ||
-				itip_sentby_is_user (clone, priv->client)))
+				itip_organizer_is_user (clone, priv->cal_client) ||
+				itip_sentby_is_user (clone, priv->cal_client)))
 				e_cal_component_commit_sequence (clone);
 			else
 				e_cal_component_abort_sequence (clone);
@@ -550,25 +594,31 @@ save_comp (CompEditor *editor)
 		return FALSE;
 	} else {
 		if (priv->source_client &&
-		    !e_source_equal (e_cal_get_source (priv->client),
-				     e_cal_get_source (priv->source_client)) &&
+		    !e_source_equal (e_client_get_source (E_CLIENT (priv->cal_client)),
+				     e_client_get_source (E_CLIENT (priv->source_client))) &&
 		    cal_comp_is_on_server (priv->comp, priv->source_client)) {
 			/* Comp found a new home. Remove it from old one. */
+			GError *error = NULL;
 
 			if (e_cal_component_is_instance (priv->comp) ||
 				e_cal_component_has_recurrences (priv->comp))
-				e_cal_remove_object_with_mod (
+				e_cal_client_remove_object_sync (
 					priv->source_client, orig_uid_copy,
-					NULL, CALOBJ_MOD_ALL, NULL);
+					NULL, CALOBJ_MOD_ALL, NULL, &error);
 			else
-				e_cal_remove_object (
+				e_cal_client_remove_object_sync (
 					priv->source_client,
-					orig_uid_copy, NULL);
+					orig_uid_copy, NULL, CALOBJ_MOD_THIS, NULL, &error);
+
+			if (error) {
+				g_debug ("%s: Failed to remove object: %s", G_STRFUNC, error->message);
+				g_error_free (error);
+			}
 
 			/* Let priv->source_client point to new home,
 			 * so we can move it again this session. */
 			g_object_unref (priv->source_client);
-			priv->source_client = g_object_ref (priv->client);
+			priv->source_client = g_object_ref (priv->cal_client);
 
 			listen_for_changes (editor);
 		}
@@ -608,9 +658,9 @@ save_comp_with_send (CompEditor *editor)
 	if (!save_comp (editor))
 		return FALSE;
 
-	delegated = delegate && !e_cal_get_save_schedules (priv->client);
+	delegated = delegate && !e_cal_client_check_save_schedules (priv->cal_client);
 	if (delegated || (send && send_component_dialog (
-		(GtkWindow *) editor, priv->client, priv->comp,
+		(GtkWindow *) editor, priv->cal_client, priv->comp,
 		!priv->existing_org, &strip_alarms, !priv->existing_org ?
 		NULL : &only_new_attendees))) {
 		if (delegated)
@@ -622,8 +672,8 @@ save_comp_with_send (CompEditor *editor)
 			(only_new_attendees ?
 			COMP_EDITOR_SEND_TO_NEW_ATTENDEES_ONLY : 0));
 
-		if ((itip_organizer_is_user (priv->comp, priv->client) ||
-			itip_sentby_is_user (priv->comp, priv->client))) {
+		if ((itip_organizer_is_user (priv->comp, priv->cal_client) ||
+			itip_sentby_is_user (priv->comp, priv->cal_client))) {
 			if (e_cal_component_get_vtype (priv->comp) == E_CAL_COMPONENT_JOURNAL)
 				return comp_editor_send_comp (
 					editor, E_CAL_COMPONENT_METHOD_PUBLISH,
@@ -768,7 +818,7 @@ action_print_cb (GtkAction *action,
 	use_24_hour_format = comp_editor_get_use_24_hour_format (editor);
 
 	print_comp (
-		comp, priv->client, zone, use_24_hour_format,
+		comp, priv->cal_client, zone, use_24_hour_format,
 		GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG);
 
 	g_object_unref (comp);
@@ -798,14 +848,14 @@ action_print_preview_cb (GtkAction *action,
 	use_24_hour_format = comp_editor_get_use_24_hour_format (editor);
 
 	print_comp (
-		comp, priv->client, zone, use_24_hour_format,
+		comp, priv->cal_client, zone, use_24_hour_format,
 		GTK_PRINT_OPERATION_ACTION_PREVIEW);
 
 	g_object_unref (comp);
 }
 
 static gboolean
-remove_event_dialog (ECal *client,
+remove_event_dialog (ECalClient *client,
 		     ECalComponent *comp,
 		     GtkWindow *parent)
 {
@@ -833,7 +883,7 @@ action_save_cb (GtkAction *action,
 	EAttachmentView *view;
 	ECalComponentText text;
 	gboolean delegated = FALSE;
-	gboolean read_only, correct = FALSE;
+	gboolean correct = FALSE;
 	ECalComponent *comp;
 
 	view = E_ATTACHMENT_VIEW (priv->attachment_view);
@@ -860,12 +910,12 @@ action_save_cb (GtkAction *action,
 		return;
 	}
 
-	if (!e_cal_is_read_only (priv->client, &read_only, NULL) || read_only) {
+	if (e_client_is_readonly (E_CLIENT (priv->cal_client))) {
 		e_alert_submit (
 			E_ALERT_SINK (editor),
 			"calendar:prompt-read-only-cal-editor",
 			e_source_peek_name (
-				e_cal_get_source (priv->client)),
+				e_client_get_source (E_CLIENT (priv->cal_client))),
 			NULL);
 		return;
 	}
@@ -873,7 +923,7 @@ action_save_cb (GtkAction *action,
 	commit_all_fields (editor);
 	if (e_cal_component_has_recurrences (priv->comp)) {
 		if (!recur_component_dialog (
-			priv->client, priv->comp, &priv->mod,
+			priv->cal_client, priv->comp, &priv->mod,
 			GTK_WINDOW (editor), delegated))
 			return;
 	} else if (e_cal_component_is_instance (priv->comp))
@@ -888,7 +938,7 @@ action_save_cb (GtkAction *action,
 
 	if (!text.value)
 		if (!send_component_prompt_subject (
-			(GtkWindow *) editor, priv->client, priv->comp))
+			(GtkWindow *) editor, priv->cal_client, priv->comp))
 			return;
 
 	if (save_comp_with_send (editor)) {
@@ -899,7 +949,7 @@ action_save_cb (GtkAction *action,
 		delegate = flags & COMP_EDITOR_DELEGATE;
 
 		if (delegate && !remove_event_dialog (
-			priv->client, priv->comp, GTK_WINDOW (editor))) {
+			priv->cal_client, priv->comp, GTK_WINDOW (editor))) {
 			const gchar *uid = NULL;
 			GError *error = NULL;
 
@@ -909,12 +959,10 @@ action_save_cb (GtkAction *action,
 				e_cal_component_has_recurrences (priv->comp)) {
 				gchar *rid;
 				rid = e_cal_component_get_recurid_as_string (priv->comp);
-				e_cal_remove_object_with_mod (
-					priv->client, uid, rid,
-					priv->mod, &error);
+				e_cal_client_remove_object_sync (priv->cal_client, uid, rid, priv->mod, NULL, &error);
 				g_free (rid);
 			} else
-				e_cal_remove_object (priv->client, uid, &error);
+				e_cal_client_remove_object_sync (priv->cal_client, uid, NULL, CALOBJ_MOD_THIS, NULL, &error);
 
 			g_clear_error (&error);
 		}
@@ -1470,9 +1518,9 @@ comp_editor_dispose (GObject *object)
 		priv->window_group = NULL;
 	}
 
-	if (priv->client) {
-		g_object_unref (priv->client);
-		priv->client = NULL;
+	if (priv->cal_client) {
+		g_object_unref (priv->cal_client);
+		priv->cal_client = NULL;
 	}
 
 	if (priv->source_client) {
@@ -1480,6 +1528,12 @@ comp_editor_dispose (GObject *object)
 		priv->source_client = NULL;
 	}
 
+	if (priv->view_cancellable) {
+		g_cancellable_cancel (priv->view_cancellable);
+		g_object_unref (priv->view_cancellable);
+		priv->view_cancellable = NULL;
+	}
+
 	if (priv->view) {
 		g_signal_handlers_disconnect_matched (G_OBJECT (priv->view),
 						      G_SIGNAL_MATCH_DATA,
@@ -1690,7 +1744,7 @@ comp_editor_class_init (CompEditorClass *class)
 			"client",
 			NULL,
 			NULL,
-			E_TYPE_CAL,
+			E_TYPE_CAL_CLIENT,
 			G_PARAM_READWRITE |
 			G_PARAM_CONSTRUCT));
 
@@ -2074,7 +2128,7 @@ static gboolean
 prompt_and_save_changes (CompEditor *editor, gboolean send)
 {
 	CompEditorPrivate *priv;
-	gboolean read_only, correct = FALSE;
+	gboolean correct = FALSE;
 	ECalComponent *comp;
 	ECalComponentText text;
 
@@ -2085,12 +2139,12 @@ prompt_and_save_changes (CompEditor *editor, gboolean send)
 
 	switch (save_component_dialog (GTK_WINDOW (editor), priv->comp)) {
 	case GTK_RESPONSE_YES: /* Save */
-		if (!e_cal_is_read_only (priv->client, &read_only, NULL) || read_only) {
+		if (e_client_is_readonly (E_CLIENT (priv->cal_client))) {
 			e_alert_submit (
 				E_ALERT_SINK (editor),
 				"calendar:prompt-read-only-cal-editor",
 				e_source_peek_name (
-					e_cal_get_source (priv->client)),
+					e_client_get_source (E_CLIENT (priv->cal_client))),
 				NULL);
 			/* don't discard changes when selected readonly calendar */
 			return FALSE;
@@ -2105,12 +2159,12 @@ prompt_and_save_changes (CompEditor *editor, gboolean send)
 
 		if (!text.value)
 			if (!send_component_prompt_subject (
-				(GtkWindow *) editor, priv->client, priv->comp))
+				(GtkWindow *) editor, priv->cal_client, priv->comp))
 				return FALSE;
 
 		if (e_cal_component_is_instance (priv->comp))
 			if (!recur_component_dialog (
-				priv->client, priv->comp, &priv->mod,
+				priv->cal_client, priv->comp, &priv->mod,
 				GTK_WINDOW (editor), FALSE))
 				return FALSE;
 
@@ -2815,27 +2869,27 @@ comp_editor_show_page (CompEditor *editor, CompEditorPage *page)
 /**
  * comp_editor_set_client:
  * @editor: A component editor
- * @client: The calendar client to use
+ * @cal_client: The calendar client to use
  *
  * Sets the calendar client used by the editor to update components
  **/
 void
 comp_editor_set_client (CompEditor *editor,
-                        ECal *client)
+                        ECalClient *cal_client)
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
-	g_return_if_fail (client == NULL || E_IS_CAL (client));
+	g_return_if_fail (cal_client == NULL || E_IS_CAL_CLIENT (cal_client));
 
-	if (client != NULL)
-		g_object_ref (client);
+	if (cal_client != NULL)
+		g_object_ref (cal_client);
 
-	if (editor->priv->client != NULL)
-		g_object_unref (editor->priv->client);
+	if (editor->priv->cal_client != NULL)
+		g_object_unref (editor->priv->cal_client);
 
-	editor->priv->client = client;
+	editor->priv->cal_client = cal_client;
 
-	if (editor->priv->source_client == NULL && client != NULL)
-		editor->priv->source_client = g_object_ref (client);
+	if (editor->priv->source_client == NULL && cal_client != NULL)
+		editor->priv->source_client = g_object_ref (cal_client);
 
 	g_object_notify (G_OBJECT (editor), "client");
 }
@@ -2848,12 +2902,12 @@ comp_editor_set_client (CompEditor *editor,
  *
  * Return value: The calendar client of the editor
  **/
-ECal *
+ECalClient *
 comp_editor_get_client (CompEditor *editor)
 {
 	g_return_val_if_fail (IS_COMP_EDITOR (editor), NULL);
 
-	return editor->priv->client;
+	return editor->priv->cal_client;
 }
 
 static void
@@ -3046,7 +3100,7 @@ set_attendees_for_delegation (ECalComponent *comp,
 }
 
 static void
-get_users_from_memo_comp (ECalComponent *comp, GList **users)
+get_users_from_memo_comp (ECalComponent *comp, GSList **users)
 {
 	icalcomponent *icalcomp;
 	icalproperty *icalprop;
@@ -3072,7 +3126,7 @@ get_users_from_memo_comp (ECalComponent *comp, GList **users)
 
 		iter = emails;
 		while (*iter) {
-			*users = g_list_append (*users, g_strdup (*iter));
+			*users = g_slist_append (*users, g_strdup (*iter));
 			iter++;
 		}
 		g_strfreev (emails);
@@ -3088,7 +3142,7 @@ real_send_comp (CompEditor *editor,
 	CompEditorFlags flags;
 	ECalComponent *send_comp = NULL;
 	gchar *address = NULL;
-	GList *users = NULL;
+	GSList *users = NULL;
 
 	g_return_val_if_fail (IS_COMP_EDITOR (editor), FALSE);
 
@@ -3101,7 +3155,7 @@ real_send_comp (CompEditor *editor,
 		const gchar *uid = NULL;
 
 		e_cal_component_get_uid (priv->comp, &uid);
-		if (e_cal_get_object (priv->client, uid, NULL, &icalcomp, NULL) && icalcomp) {
+		if (e_cal_client_get_object_sync (priv->cal_client, uid, NULL, &icalcomp, NULL, NULL) && icalcomp) {
 			send_comp = e_cal_component_new ();
 			if (!e_cal_component_set_icalcomponent (send_comp, icalcomp)) {
 				icalcomponent_free (icalcomp);
@@ -3122,17 +3176,17 @@ real_send_comp (CompEditor *editor,
 	/* The user updates the delegated status to the Organizer,
 	 * so remove all other attendees. */
 	if (flags & COMP_EDITOR_DELEGATE) {
-		address = itip_get_comp_attendee (send_comp, priv->client);
+		address = itip_get_comp_attendee (send_comp, priv->cal_client);
 
 		if (address)
 			set_attendees_for_delegation (send_comp, address, method);
 	}
 
 	if (!e_cal_component_has_attachments (priv->comp) ||
-		e_cal_get_static_capability (priv->client,
+		e_client_check_capability (E_CLIENT (priv->cal_client),
 		CAL_STATIC_CAPABILITY_CREATE_MESSAGES)) {
 		if (itip_send_comp (
-			method, send_comp, priv->client,
+			method, send_comp, priv->cal_client,
 			NULL, NULL, users, strip_alarms,
 			priv->flags & COMP_EDITOR_SEND_TO_NEW_ATTENDEES_ONLY)) {
 			g_object_unref (send_comp);
@@ -3162,7 +3216,7 @@ real_send_comp (CompEditor *editor,
 		}
 
 		if (itip_send_comp (
-			method, send_comp, priv->client,
+			method, send_comp, priv->cal_client,
 			NULL, mime_attach_list, users, strip_alarms,
 			priv->flags & COMP_EDITOR_SEND_TO_NEW_ATTENDEES_ONLY)) {
 			gboolean saved = save_comp (editor);
@@ -3279,10 +3333,10 @@ comp_editor_delete_comp (CompEditor *editor)
 	e_cal_component_get_uid (priv->comp, &uid);
 	if (e_cal_component_is_instance (priv->comp) ||
 		e_cal_component_has_recurrences (priv->comp))
-		e_cal_remove_object_with_mod (priv->client, uid, NULL,
-				CALOBJ_MOD_ALL, NULL);
+		e_cal_client_remove_object_sync (priv->cal_client, uid, NULL,
+				CALOBJ_MOD_ALL, NULL, NULL);
 	else
-		e_cal_remove_object (priv->client, uid, NULL);
+		e_cal_client_remove_object_sync (priv->cal_client, uid, NULL, CALOBJ_MOD_THIS, NULL, NULL);
 	close_dialog (editor);
 }
 
@@ -3428,8 +3482,8 @@ page_dates_changed_cb (CompEditor *editor,
 }
 
 static void
-obj_modified_cb (ECal *client,
-                 GList *objects,
+obj_modified_cb (ECalClientView *view,
+                 const GSList *objects,
                  CompEditor *editor)
 {
 	CompEditorPrivate *priv;
@@ -3465,8 +3519,8 @@ obj_modified_cb (ECal *client,
 }
 
 static void
-obj_removed_cb (ECal *client,
-                GList *uids,
+obj_removed_cb (ECalClientView *view,
+                const GSList *uids,
                 CompEditor *editor)
 {
 	CompEditorPrivate *priv = editor->priv;
diff --git a/calendar/gui/dialogs/comp-editor.h b/calendar/gui/dialogs/comp-editor.h
index 591300ffd2..3f1ddbb673 100644
--- a/calendar/gui/dialogs/comp-editor.h
+++ b/calendar/gui/dialogs/comp-editor.h
@@ -26,7 +26,7 @@
 #define COMP_EDITOR_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include "../itip-utils.h"
 #include "comp-editor-page.h"
 #include <shell/e-shell.h>
@@ -165,8 +165,8 @@ void		comp_editor_remove_page		(CompEditor *editor,
 void		comp_editor_show_page		(CompEditor *editor,
 						 CompEditorPage *page);
 void		comp_editor_set_client		(CompEditor *editor,
-						 ECal *client);
-ECal *		comp_editor_get_client		(CompEditor *editor);
+						 ECalClient *cal_client);
+ECalClient *	comp_editor_get_client		(CompEditor *editor);
 void		comp_editor_edit_comp		(CompEditor *ee,
 						 ECalComponent *comp);
 ECalComponent *	comp_editor_get_comp		(CompEditor *editor);
diff --git a/calendar/gui/dialogs/copy-source-dialog.c b/calendar/gui/dialogs/copy-source-dialog.c
index 547a91069c..7b75624a56 100644
--- a/calendar/gui/dialogs/copy-source-dialog.c
+++ b/calendar/gui/dialogs/copy-source-dialog.c
@@ -27,33 +27,35 @@
 #endif
 
 #include <glib/gi18n.h>
+#include <libedataserverui/e-client-utils.h>
+
 #include "copy-source-dialog.h"
 #include "select-source-dialog.h"
-#include "common/authentication.h"
 
 typedef struct {
 	GtkWindow *parent;
 	ESource *orig_source;
-	ECalSourceType obj_type;
+	EClientSourceType obj_type;
 	ESource *selected_source;
+	ECalClient *source_client, *dest_client;
 } CopySourceDialogData;
 
 static void
-show_error (CopySourceDialogData *csdd, const gchar *msg)
+show_error (CopySourceDialogData *csdd, const gchar *msg, const GError *error)
 {
 	GtkWidget *dialog;
 
 	dialog = gtk_message_dialog_new (
 		csdd->parent, 0, GTK_MESSAGE_ERROR,
-		GTK_BUTTONS_CLOSE, "%s", msg);
+		GTK_BUTTONS_CLOSE, error ? "%s\n%s" : "%s", msg, error ? error->message : "");
 	gtk_dialog_run (GTK_DIALOG (dialog));
 	gtk_widget_destroy (dialog);
 }
 
 struct ForeachTzidData
 {
-	ECal *source_client;
-	ECal *dest_client;
+	ECalClient *source_client;
+	ECalClient *dest_client;
 };
 
 static void
@@ -71,61 +73,70 @@ add_timezone_to_cal_cb (icalparameter *param, gpointer data)
 	if (!tzid || !*tzid)
 		return;
 
-	if (e_cal_get_timezone (ftd->source_client, tzid, &tz, NULL) && tz)
-		e_cal_add_timezone (ftd->dest_client, tz, NULL);
+	if (e_cal_client_get_timezone_sync (ftd->source_client, tzid, &tz, NULL, NULL) && tz)
+		e_cal_client_add_timezone_sync (ftd->dest_client, tz, NULL, NULL);
 }
 
-static gboolean
-copy_source (CopySourceDialogData *csdd)
+static void
+free_copy_data (CopySourceDialogData *csdd)
 {
-	ECal *source_client, *dest_client;
-	gboolean read_only = TRUE;
-	GList *obj_list = NULL;
-	gboolean result = FALSE;
-
-	if (!csdd->selected_source)
-		return FALSE;
-
-	/* open the source */
-	source_client = e_auth_new_cal_from_source (csdd->orig_source, csdd->obj_type);
-	if (!e_cal_open (source_client, TRUE, NULL)) {
-		show_error (csdd, _("Could not open source"));
-		g_object_unref (source_client);
-		return FALSE;
-	}
+	if (!csdd)
+		return;
 
-	/* open the destination */
-	dest_client = e_auth_new_cal_from_source (csdd->selected_source, csdd->obj_type);
-	if (!e_cal_open (dest_client, FALSE, NULL)) {
-		show_error (csdd, _("Could not open destination"));
-		g_object_unref (dest_client);
-		g_object_unref (source_client);
-		return FALSE;
+	if (csdd->orig_source)
+		g_object_unref (csdd->orig_source);
+	if (csdd->selected_source)
+		g_object_unref (csdd->selected_source);
+	if (csdd->source_client)
+		g_object_unref (csdd->source_client);
+	if (csdd->dest_client)
+		g_object_unref (csdd->dest_client);
+	g_free (csdd);
+}
+
+static void
+dest_source_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	CopySourceDialogData *csdd = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
+
+	if (!client) {
+		show_error (csdd, _("Could not open destination"), error);
+		if (error)
+			g_error_free (error);
+		free_copy_data (csdd);
+		return;
 	}
 
+	csdd->dest_client = E_CAL_CLIENT (client);
+
+	e_client_utils_open_new (csdd->selected_source, csdd->obj_type, FALSE, NULL,
+		e_client_utils_authenticate_handler, csdd->parent,
+		dest_source_opened_cb, csdd);
+
 	/* check if the destination is read only */
-	e_cal_is_read_only (dest_client, &read_only, NULL);
-	if (read_only) {
-		show_error (csdd, _("Destination is read only"));
+	if (e_client_is_readonly (E_CLIENT (csdd->dest_client))) {
+		show_error (csdd, _("Destination is read only"), NULL);
 	} else {
-		if (e_cal_get_object_list (source_client, "#t", &obj_list, NULL)) {
-			GList *l;
+		GSList *obj_list = NULL;
+		if (e_cal_client_get_object_list_sync (csdd->source_client, "#t", &obj_list, NULL, NULL)) {
+			GSList *l;
 			icalcomponent *icalcomp;
 			struct ForeachTzidData ftd;
 
-			ftd.source_client = source_client;
-			ftd.dest_client = dest_client;
+			ftd.source_client = csdd->source_client;
+			ftd.dest_client = csdd->dest_client;
 
 			for (l = obj_list; l != NULL; l = l->next) {
 				/* FIXME: process recurrences */
 				/* FIXME: process errors */
-				if (e_cal_get_object (
-					dest_client,
-					icalcomponent_get_uid (l->data),
-					NULL, &icalcomp, NULL)) {
-					e_cal_modify_object (
-						dest_client, l->data,
-						CALOBJ_MOD_ALL, NULL);
+				if (e_cal_client_get_object_sync (csdd->dest_client, icalcomponent_get_uid (l->data), NULL,
+						      &icalcomp, NULL, NULL)) {
+					e_cal_client_modify_object_sync (csdd->dest_client, l->data, CALOBJ_MOD_ALL, NULL, NULL);
 					icalcomponent_free (icalcomp);
 				} else {
 					gchar *uid = NULL;
@@ -139,11 +150,11 @@ copy_source (CopySourceDialogData *csdd)
 						icalcomp,
 						add_timezone_to_cal_cb, &ftd);
 
-					if (e_cal_create_object (dest_client, icalcomp, &uid, &error)) {
+					if (e_cal_client_create_object_sync (csdd->dest_client, icalcomp, &uid, NULL, &error)) {
 						g_free (uid);
 					} else {
 						if (error) {
-							show_error (csdd, error->message);
+							show_error (csdd, _("Cannot create object"), error);
 							g_error_free (error);
 						}
 						break;
@@ -151,15 +162,57 @@ copy_source (CopySourceDialogData *csdd)
 				}
 			}
 
-			e_cal_free_object_list (obj_list);
+			e_cal_client_free_icalcomp_slist (obj_list);
 		}
 	}
 
-	/* free memory */
-	g_object_unref (dest_client);
-	g_object_unref (source_client);
+	free_copy_data (csdd);
+}
+
+static void
+orig_source_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	CopySourceDialogData *csdd = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
+
+	if (!client) {
+		show_error (csdd, _("Could not open source"), error);
+		if (error)
+			g_error_free (error);
+		free_copy_data (csdd);
+		return;
+	}
+
+	csdd->source_client = E_CAL_CLIENT (client);
+
+	e_client_utils_open_new (csdd->selected_source, csdd->obj_type, FALSE, NULL,
+		e_client_utils_authenticate_handler, csdd->parent,
+		dest_source_opened_cb, csdd);
+}
+
+static void
+copy_source (const CopySourceDialogData *const_csdd)
+{
+	CopySourceDialogData *csdd;
+
+	if (!const_csdd->selected_source)
+		return;
 
-	return result;
+	g_return_if_fail (const_csdd->obj_type != E_CLIENT_SOURCE_TYPE_LAST);
+
+	csdd = g_new0 (CopySourceDialogData, 1);
+	csdd->parent = const_csdd->parent;
+	csdd->orig_source = g_object_ref (const_csdd->orig_source);
+	csdd->obj_type = const_csdd->obj_type;
+	csdd->selected_source = g_object_ref (const_csdd->selected_source);
+
+	e_client_utils_open_new (csdd->orig_source, csdd->obj_type, FALSE, NULL,
+		e_client_utils_authenticate_handler, csdd->parent,
+		orig_source_opened_cb, csdd);
 }
 
 /**
@@ -168,26 +221,29 @@ copy_source (CopySourceDialogData *csdd)
  * Implements the Copy command for sources, allowing the user to select a target
  * source to copy to.
  */
-gboolean
-copy_source_dialog (GtkWindow *parent, ESource *source, ECalSourceType obj_type)
+void
+copy_source_dialog (GtkWindow *parent, ESource *source, ECalClientSourceType obj_type)
 {
 	CopySourceDialogData csdd;
-	gboolean result = FALSE;
 
-	g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
+	g_return_if_fail (E_IS_SOURCE (source));
+	g_return_if_fail (obj_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS ||
+			  obj_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS ||
+			  obj_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS);
 
 	csdd.parent = parent;
 	csdd.orig_source = source;
 	csdd.selected_source = NULL;
-	csdd.obj_type = obj_type;
+	csdd.obj_type = obj_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS ? E_CLIENT_SOURCE_TYPE_EVENTS :
+			obj_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS ? E_CLIENT_SOURCE_TYPE_TASKS :
+			obj_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS ? E_CLIENT_SOURCE_TYPE_MEMOS :
+			E_CLIENT_SOURCE_TYPE_LAST;
 
 	csdd.selected_source = select_source_dialog (parent, obj_type, source);
 	if (csdd.selected_source) {
-		result = copy_source (&csdd);
+		copy_source (&csdd);
 
 		/* free memory */
 		g_object_unref (csdd.selected_source);
 	}
-
-	return result;
 }
diff --git a/calendar/gui/dialogs/copy-source-dialog.h b/calendar/gui/dialogs/copy-source-dialog.h
index 4c6f5b19c8..d9475f742c 100644
--- a/calendar/gui/dialogs/copy-source-dialog.h
+++ b/calendar/gui/dialogs/copy-source-dialog.h
@@ -28,9 +28,9 @@
 
 #include <gtk/gtk.h>
 #include <libedataserver/e-source.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-util.h>
 
-gboolean copy_source_dialog (GtkWindow *parent, ESource *source, ECalSourceType type);
+void copy_source_dialog (GtkWindow *parent, ESource *source, ECalClientSourceType type);
 
 #endif
diff --git a/calendar/gui/dialogs/delete-error.c b/calendar/gui/dialogs/delete-error.c
index 9b9d22ae4c..cd461c7858 100644
--- a/calendar/gui/dialogs/delete-error.c
+++ b/calendar/gui/dialogs/delete-error.c
@@ -45,11 +45,11 @@ delete_error_dialog (const GError *error, ECalComponentVType vtype)
 	const gchar *str;
 	const gchar *icon_name = NULL;
 
-	if (!error)
+	if (!error || error->domain != E_CLIENT_ERROR)
 		return;
 
 	switch (error->code) {
-	case E_CALENDAR_STATUS_DBUS_EXCEPTION:
+	case E_CLIENT_ERROR_DBUS_ERROR:
 		switch (vtype) {
 		case E_CAL_COMPONENT_EVENT:
 			/* Translators: The '%s' is replaced with a detailed error message */
@@ -69,7 +69,7 @@ delete_error_dialog (const GError *error, ECalComponentVType vtype)
 			break;
 		}
 		break;
-	case E_CALENDAR_STATUS_PERMISSION_DENIED:
+	case E_CLIENT_ERROR_PERMISSION_DENIED:
 		switch (vtype) {
 		case E_CAL_COMPONENT_EVENT:
 			str = _("The event could not be deleted because permission was denied");
@@ -85,7 +85,7 @@ delete_error_dialog (const GError *error, ECalComponentVType vtype)
 			break;
 		}
 		break;
-	case E_CALENDAR_STATUS_OTHER_ERROR:
+	case E_CLIENT_ERROR_OTHER_ERROR:
 		switch (vtype) {
 		case E_CAL_COMPONENT_EVENT:
 			/* Translators: The '%s' is replaced with a detailed error message */
@@ -105,8 +105,6 @@ delete_error_dialog (const GError *error, ECalComponentVType vtype)
 			break;
 		}
 		break;
-	case E_CALENDAR_STATUS_OK:
-	case E_CALENDAR_STATUS_OBJECT_NOT_FOUND:
 	default:
 		/* If not found, we don't care - its gone anyhow */
 		return;
diff --git a/calendar/gui/dialogs/delete-error.h b/calendar/gui/dialogs/delete-error.h
index 480edcbd42..91e38c146f 100644
--- a/calendar/gui/dialogs/delete-error.h
+++ b/calendar/gui/dialogs/delete-error.h
@@ -26,7 +26,7 @@
 #ifndef DELETE_ERROR_H
 #define DELETE_ERROR_H
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 
 void delete_error_dialog (const GError *error, ECalComponentVType vtype);
diff --git a/calendar/gui/dialogs/event-editor.c b/calendar/gui/dialogs/event-editor.c
index 64d3b67891..f4c798bfd1 100644
--- a/calendar/gui/dialogs/event-editor.c
+++ b/calendar/gui/dialogs/event-editor.c
@@ -286,7 +286,7 @@ event_editor_constructor (GType type,
 	GtkActionGroup *action_group;
 	GtkWidget *content_area;
 	EShell *shell;
-	ECal *client;
+	ECalClient *client;
 	gboolean is_meeting;
 	GtkWidget *alarm_page;
 	GtkWidget *attendee_page;
@@ -363,8 +363,7 @@ event_editor_constructor (GType type,
 
 	if (is_meeting) {
 
-		if (e_cal_get_static_capability (
-			client, CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS))
+		if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS))
 			event_page_show_options (priv->event_page);
 
 		comp_editor_set_group_item (editor, TRUE);
@@ -604,7 +603,7 @@ event_editor_edit_comp (CompEditor *editor, ECalComponent *comp)
 	ECalComponentOrganizer organizer;
 	gboolean delegate;
 	ECalComponentDateTime dtstart, dtend;
-	ECal *client;
+	ECalClient *client;
 	GSList *attendees = NULL;
 
 	priv = EVENT_EDITOR (editor)->priv;
@@ -645,8 +644,8 @@ event_editor_edit_comp (CompEditor *editor, ECalComponent *comp)
 			gtk_action_set_visible (action, TRUE);
 		}
 
-		if (!(delegate && e_cal_get_static_capability (
-			client, CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY))) {
+		if (!(delegate && e_client_check_capability (
+			E_CLIENT (client), CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY))) {
 			event_page_remove_all_attendees (priv->event_page);
 
 			for (l = attendees; l != NULL; l = l->next) {
@@ -685,7 +684,7 @@ event_editor_edit_comp (CompEditor *editor, ECalComponent *comp)
 				if (ia != NULL)
 					e_meeting_attendee_set_edit_level (
 						ia, E_MEETING_ATTENDEE_EDIT_STATUS);
-			} else if (e_cal_get_organizer_must_attend (client)) {
+			} else if (e_cal_client_check_organizer_must_attend (client)) {
 				EMeetingAttendee *ia;
 
 				ia = e_meeting_store_find_attendee (
@@ -726,7 +725,7 @@ event_editor_send_comp (CompEditor *editor,
 
 	comp = event_page_get_cancel_comp (priv->event_page);
 	if (comp != NULL) {
-		ECal *client;
+		ECalClient *client;
 		gboolean result;
 
 		client = e_meeting_store_get_client (priv->model);
@@ -748,7 +747,7 @@ event_editor_send_comp (CompEditor *editor,
 
 /**
  * event_editor_new:
- * @client: a ECal
+ * @client: a ECalClient
  *
  * Creates a new event editor dialog.
  *
@@ -756,11 +755,11 @@ event_editor_send_comp (CompEditor *editor,
  * editor could not be created.
  **/
 CompEditor *
-event_editor_new (ECal *client,
+event_editor_new (ECalClient *client,
                   EShell *shell,
                   CompEditorFlags flags)
 {
-	g_return_val_if_fail (E_IS_CAL (client), NULL);
+	g_return_val_if_fail (E_IS_CAL_CLIENT (client), NULL);
 	g_return_val_if_fail (E_IS_SHELL (shell), NULL);
 
 	return g_object_new (
diff --git a/calendar/gui/dialogs/event-editor.h b/calendar/gui/dialogs/event-editor.h
index abb8f0e659..eaa2c49057 100644
--- a/calendar/gui/dialogs/event-editor.h
+++ b/calendar/gui/dialogs/event-editor.h
@@ -65,7 +65,7 @@ struct _EventEditorClass {
 };
 
 GType		event_editor_get_type		(void);
-CompEditor *	event_editor_new		(ECal *client,
+CompEditor *	event_editor_new		(ECalClient *client,
 						 EShell *shell,
 						 CompEditorFlags flags);
 void		event_editor_show_meeting	(EventEditor *ee);
diff --git a/calendar/gui/dialogs/event-page.c b/calendar/gui/dialogs/event-page.c
index b6d7c2630b..68210d1090 100644
--- a/calendar/gui/dialogs/event-page.c
+++ b/calendar/gui/dialogs/event-page.c
@@ -35,8 +35,8 @@
 #include <glib/gi18n.h>
 #include <gdk/gdkkeysyms.h>
 #include <libedataserverui/e-category-completion.h>
+#include <libedataserverui/e-client-utils.h>
 #include <libedataserverui/e-source-combo-box.h>
-#include "common/authentication.h"
 #include "misc/e-dateedit.h"
 #include "misc/e-send-options.h"
 #include "misc/e-buffer-tagger.h"
@@ -604,7 +604,7 @@ create_alarm_image_button (const gchar *image_text,
 static void
 sensitize_widgets (EventPage *epage)
 {
-	ECal *client;
+	ECalClient *client;
 	EShell *shell;
 	CompEditor *editor;
 	CompEditorFlags flags;
@@ -623,8 +623,7 @@ sensitize_widgets (EventPage *epage)
 	if (flags & COMP_EDITOR_MEETING)
 		sens = flags & COMP_EDITOR_USER_ORG;
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	delegate = flags & COMP_EDITOR_DELEGATE;
 
@@ -724,7 +723,7 @@ update_time (EventPage *epage,
              ECalComponentDateTime *end_date)
 {
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	GtkAction *action;
 	struct icaltimetype *start_tt, *end_tt, implied_tt;
 	icaltimezone *start_zone = NULL, *def_zone = NULL;
@@ -734,15 +733,20 @@ update_time (EventPage *epage,
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
 	client = comp_editor_get_client (editor);
 
-	/* Note that if we are creating a new event, the timezones may not be
-	   on the server, so we try to get the builtin timezone with the TZID
-	   first. */
-	start_zone = icaltimezone_get_builtin_timezone_from_tzid (start_date->tzid);
-	if (!start_zone) {
-		/* FIXME: Handle error better. */
-		if (!e_cal_get_timezone (client, start_date->tzid, &start_zone, NULL)) {
-			g_warning ("Couldn't get timezone from server: %s",
-				   start_date->tzid ? start_date->tzid : "");
+	if (start_date->tzid) {
+		/* Note that if we are creating a new event, the timezones may not be
+		   on the server, so we try to get the builtin timezone with the TZID
+		   first. */
+		start_zone = icaltimezone_get_builtin_timezone_from_tzid (start_date->tzid);
+		if (!start_zone) {
+			/* FIXME: Handle error better. */
+			GError *error = NULL;
+			if (!e_cal_client_get_timezone_sync (client, start_date->tzid, &start_zone, NULL, &error)) {
+				g_warning ("Couldn't get timezone '%s' from server: %s",
+					start_date->tzid ? start_date->tzid : "", error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
+			}
 		}
 	}
 
@@ -1068,7 +1072,7 @@ static gboolean
 event_page_fill_widgets (CompEditorPage *page,
                          ECalComponent *comp)
 {
-	ECal *client;
+	ECalClient *client;
 	CompEditor *editor;
 	CompEditorFlags flags;
 	EventPage *epage;
@@ -1135,7 +1139,7 @@ event_page_fill_widgets (CompEditorPage *page,
 	e_cal_component_free_text_list (l);
 	e_buffer_tagger_update_tags (GTK_TEXT_VIEW (priv->description));
 
-	e_cal_get_cal_address (client, &backend_addr, NULL);
+	e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 	set_subscriber_info_string (epage, backend_addr);
 
 	if (priv->is_meeting) {
@@ -1156,13 +1160,13 @@ event_page_fill_widgets (CompEditorPage *page,
 				gchar *string;
 
 				if (itip_organizer_is_user (comp, client) || itip_sentby_is_user (comp, client)) {
-					if (e_cal_get_static_capability (
-								client,
+					if (e_client_check_capability (
+								E_CLIENT (client),
 								CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
 						priv->user_org = TRUE;
 				} else {
-					if (e_cal_get_static_capability (
-								client,
+					if (e_client_check_capability (
+								E_CLIENT (client),
 								CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
 					gtk_widget_set_sensitive (priv->invite, FALSE);
 					gtk_widget_set_sensitive (priv->add, FALSE);
@@ -1171,7 +1175,7 @@ event_page_fill_widgets (CompEditorPage *page,
 					priv->user_org = FALSE;
 				}
 
-				if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_ORGANIZER) && (flags & COMP_EDITOR_DELEGATE))
+				if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_ORGANIZER) && (flags & COMP_EDITOR_DELEGATE))
 					string = g_strdup (backend_addr);
 				else if ( organizer.cn != NULL)
 					string = g_strdup_printf ("%s <%s>", organizer.cn, strip);
@@ -1224,7 +1228,7 @@ event_page_fill_widgets (CompEditorPage *page,
 				backend_mailto = mailto = NULL;
 			}
 
-			if (client && e_cal_get_organizer_must_accept (client))
+			if (client && e_cal_client_check_organizer_must_accept (client))
 				e_meeting_attendee_set_status (
 					attendee, ICAL_PARTSTAT_NEEDSACTION);
 			else
@@ -1277,7 +1281,7 @@ event_page_fill_widgets (CompEditorPage *page,
 		break;
 	}
 
-	if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_TRANSPARENCY))
+	if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_TRANSPARENCY))
 		enable_busy_time_menu (epage, FALSE);
 	else
 		enable_busy_time_menu (epage, TRUE);
@@ -1318,7 +1322,7 @@ event_page_fill_widgets (CompEditorPage *page,
 	/* Source */
 	e_source_combo_box_set_active (
 		E_SOURCE_COMBO_BOX (priv->source_selector),
-		e_cal_get_source (client));
+		e_client_get_source (E_CLIENT (client)));
 
 	e_cal_component_get_uid (comp, &uid);
 	if (!(flags & COMP_EDITOR_DELEGATE)
@@ -1337,7 +1341,7 @@ event_page_fill_component (CompEditorPage *page,
 {
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	EventPage *epage;
 	EventPagePrivate *priv;
 	ECalComponentClassification classification;
@@ -1622,7 +1626,7 @@ event_page_fill_component (CompEditorPage *page,
 			gchar *name;
 			gchar *mailto;
 
-			e_cal_get_cal_address (client, &backend_addr, NULL);
+			e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 			/* Find the identity for the organizer or sentby field */
 			if (!get_current_identity (epage, &name, &mailto)) {
@@ -2172,7 +2176,7 @@ attendee_added_cb (EMeetingListView *emlv,
 	EventPagePrivate *priv = epage->priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
 	client = comp_editor_get_client (editor);
@@ -2186,7 +2190,7 @@ attendee_added_cb (EMeetingListView *emlv,
 	/* do not remove here, it did EMeetingListView already */
 	e_meeting_attendee_set_delfrom (ia, g_strdup_printf ("MAILTO:%s", priv->user_add ? priv->user_add : ""));
 
-	if (!e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY)) {
+	if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY)) {
 		EMeetingAttendee *delegator;
 
 		gtk_widget_set_sensitive (priv->invite, FALSE);
@@ -2822,7 +2826,7 @@ event_page_send_options_clicked_cb (EventPage *epage)
 	CompEditor *editor;
 	GtkWidget *toplevel;
 	ESource *source;
-	ECal *client;
+	ECalClient *client;
 
 	priv = epage->priv;
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
@@ -2836,7 +2840,7 @@ event_page_send_options_clicked_cb (EventPage *epage)
 		priv->sod->data->initialized = TRUE;
 	}
 
-	if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_GEN_OPTIONS)) {
+	if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_GEN_OPTIONS)) {
 		e_send_options_set_need_general_options (priv->sod, FALSE);
 	}
 
@@ -2850,25 +2854,28 @@ source_changed_cb (ESourceComboBox *source_combo_box, EventPage *epage)
 	EventPagePrivate *priv = epage->priv;
 	CompEditor *editor;
 	ESource *source;
-	ECal *client;
+	ECalClient *client;
+	GError *error = NULL;
 
 	if (comp_editor_page_get_updating (COMP_EDITOR_PAGE (epage)))
 		return;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
 	source = e_source_combo_box_get_active (source_combo_box);
-	client = e_auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_EVENT);
+	client = e_cal_client_new (source, E_CAL_CLIENT_SOURCE_TYPE_EVENTS, &error);
 
 	if (client) {
 		icaltimezone *zone;
 
 		zone = e_meeting_store_get_timezone (epage->priv->meeting_store);
-		e_cal_set_default_timezone (client, zone, NULL);
+		e_cal_client_set_default_timezone (client, zone);
+
+		g_signal_connect (client, "authenticate", G_CALLBACK (e_client_utils_authenticate_handler), NULL);
 	}
 
-	if (!client || !e_cal_open (client, FALSE, NULL)) {
+	if (!client || !e_client_open_sync (E_CLIENT (client), FALSE, NULL, &error)) {
 		GtkWidget *dialog;
-		ECal *old_client;
+		ECalClient *old_client;
 
 		old_client = comp_editor_get_client (editor);
 
@@ -2877,17 +2884,21 @@ source_changed_cb (ESourceComboBox *source_combo_box, EventPage *epage)
 
 		e_source_combo_box_set_active (
 			E_SOURCE_COMBO_BOX (priv->source_selector),
-			e_cal_get_source (old_client));
+			e_client_get_source (E_CLIENT (old_client)));
 
 		dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
 						 GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
-						 _("Unable to open the calendar '%s'."),
-						 e_source_peek_name (source));
+						 _("Unable to open the calendar '%s': %s"),
+						 e_source_peek_name (source),
+						 error ? error->message : _("Unknown error"));
 		gtk_dialog_run (GTK_DIALOG (dialog));
 		gtk_widget_destroy (dialog);
+
+		if (error)
+			g_error_free (error);
 	} else {
 		comp_editor_set_client (editor, client);
-		if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS) && priv->is_meeting)
+		if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS) && priv->is_meeting)
 			event_page_show_options (epage);
 		else
 			event_page_hide_options (epage);
@@ -2895,7 +2906,7 @@ source_changed_cb (ESourceComboBox *source_combo_box, EventPage *epage)
 		if (client) {
 			gchar *backend_addr = NULL;
 
-			e_cal_get_cal_address (client, &backend_addr, NULL);
+			e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 			if (priv->is_meeting)
 				event_page_select_organizer (epage, backend_addr);
@@ -2914,12 +2925,12 @@ static void
 set_subscriber_info_string (EventPage *epage, const gchar *backend_address)
 {
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	ESource *source;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
 	client = comp_editor_get_client (editor);
-	source = e_cal_get_source (client);
+	source = e_client_get_source (E_CLIENT (client));
 
 	if (e_source_get_property (source, "subscriber")) {
 		g_free (epage->priv->subscriber_info_text);
@@ -3033,7 +3044,7 @@ alarm_custom_clicked_cb (GtkWidget *widget,
 	GtkTreeIter iter;
 	gboolean valid_iter;
 	GtkWidget *toplevel;
-	ECal *client;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (epage));
 	client = comp_editor_get_client (editor);
@@ -3084,7 +3095,7 @@ init_widgets (EventPage *epage)
 	GtkAction *action;
 	GtkTreeSelection *selection;
 	gboolean active;
-	ECal *client;
+	ECalClient *client;
 	GtkTreeIter iter;
 	GtkListStore *store;
 
@@ -3328,7 +3339,7 @@ event_page_select_organizer (EventPage *epage, const gchar *backend_address)
 {
 	EventPagePrivate *priv = epage->priv;
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	const gchar *default_address;
 	gboolean subscribed_cal = FALSE;
 	ESource *source = NULL;
@@ -3339,7 +3350,7 @@ event_page_select_organizer (EventPage *epage, const gchar *backend_address)
 	client = comp_editor_get_client (editor);
 
 	if (client)
-		source = e_cal_get_source (client);
+		source = e_client_get_source (E_CLIENT (client));
 	if (source)
 		user_addr = e_source_get_property (source, "subscriber");
 
diff --git a/calendar/gui/dialogs/goto-dialog.c b/calendar/gui/dialogs/goto-dialog.c
index bc20baa7c2..3ef0db31bf 100644
--- a/calendar/gui/dialogs/goto-dialog.c
+++ b/calendar/gui/dialogs/goto-dialog.c
@@ -89,7 +89,7 @@ ecal_date_range_changed (ECalendarItem *calitem, gpointer user_data)
 {
 	GoToDialog *dlg = user_data;
 	ECalModel *model;
-	ECal *client;
+	ECalClient *client;
 
 	model = gnome_calendar_get_model (dlg->gcal);
 	client = e_cal_model_get_default_client (model);
diff --git a/calendar/gui/dialogs/memo-editor.c b/calendar/gui/dialogs/memo-editor.c
index 2f64910cab..e7dd1e7f93 100644
--- a/calendar/gui/dialogs/memo-editor.c
+++ b/calendar/gui/dialogs/memo-editor.c
@@ -158,7 +158,7 @@ memo_editor_init (MemoEditor *me)
 
 /**
  * memo_editor_new:
- * @client: an ECal
+ * @client: an #ECalClient
  *
  * Creates a new event editor dialog.
  *
@@ -166,11 +166,11 @@ memo_editor_init (MemoEditor *me)
  * editor could not be created.
  **/
 CompEditor *
-memo_editor_new (ECal *client,
+memo_editor_new (ECalClient *client,
                  EShell *shell,
                  CompEditorFlags flags)
 {
-	g_return_val_if_fail (E_IS_CAL (client), NULL);
+	g_return_val_if_fail (E_IS_CAL_CLIENT (client), NULL);
 	g_return_val_if_fail (E_IS_SHELL (shell), NULL);
 
 	return g_object_new (
diff --git a/calendar/gui/dialogs/memo-editor.h b/calendar/gui/dialogs/memo-editor.h
index cd4bc194ac..a5d32c07eb 100644
--- a/calendar/gui/dialogs/memo-editor.h
+++ b/calendar/gui/dialogs/memo-editor.h
@@ -67,7 +67,7 @@ struct _MemoEditorClass {
 };
 
 GType		memo_editor_get_type		(void);
-CompEditor *	memo_editor_new			(ECal *client,
+CompEditor *	memo_editor_new			(ECalClient *client,
 						 EShell *shell,
 						 CompEditorFlags flags);
 
diff --git a/calendar/gui/dialogs/memo-page.c b/calendar/gui/dialogs/memo-page.c
index e055072959..d720e91b1d 100644
--- a/calendar/gui/dialogs/memo-page.c
+++ b/calendar/gui/dialogs/memo-page.c
@@ -34,6 +34,7 @@
 #include <gtk/gtk.h>
 #include <glib/gi18n.h>
 #include <libedataserverui/e-category-completion.h>
+#include <libedataserverui/e-client-utils.h>
 #include <libedataserverui/e-source-combo-box.h>
 #include <libedataserverui/e-name-selector.h>
 #include <libedataserverui/e-name-selector-entry.h>
@@ -48,7 +49,6 @@
 #include "e-util/e-dialog-widgets.h"
 #include "e-util/e-util-private.h"
 
-#include "common/authentication.h"
 #include "../calendar-config.h"
 #include "comp-editor.h"
 #include "comp-editor-util.h"
@@ -242,7 +242,7 @@ memo_page_fill_widgets (CompEditorPage *page,
 	MemoPagePrivate *priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	ECalComponentClassification cl;
 	ECalComponentText text;
 	ECalComponentDateTime d;
@@ -297,7 +297,7 @@ memo_page_fill_widgets (CompEditorPage *page,
 	e_cal_component_get_categories (comp, &categories);
 	e_dialog_editable_set (priv->categories, categories);
 
-	e_cal_get_cal_address (client, &backend_addr, NULL);
+	e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 	set_subscriber_info_string (mpage, backend_addr);
 
 	if (e_cal_component_has_organizer (comp)) {
@@ -333,7 +333,7 @@ memo_page_fill_widgets (CompEditorPage *page,
 	/* Source */
 	e_source_combo_box_set_active (
 		E_SOURCE_COMBO_BOX (priv->source_selector),
-		e_cal_get_source (client));
+		e_client_get_source (E_CLIENT (client)));
 
 	if (priv->to_entry && (flags & COMP_EDITOR_IS_SHARED) && !(flags & COMP_EDITOR_NEW_ITEM))
 		gtk_entry_set_text (GTK_ENTRY (priv->to_entry), get_recipients (comp));
@@ -403,7 +403,7 @@ sensitize_widgets (MemoPage *mpage)
 	CompEditor *editor;
 	CompEditorFlags flags;
 	MemoPagePrivate *priv;
-	ECal *client;
+	ECalClient *client;
 
 	priv = mpage->priv;
 
@@ -411,8 +411,7 @@ sensitize_widgets (MemoPage *mpage)
 	client = comp_editor_get_client (editor);
 	flags = comp_editor_get_flags (editor);
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	if (flags & COMP_EDITOR_IS_SHARED)
 		sens = flags & COMP_EDITOR_USER_ORG;
@@ -511,53 +510,51 @@ fill_comp_with_recipients (ENameSelector *name_selector, ECalComponent *comp)
 			/* check if the contact is contact list which is not expanded yet */
 			/* we expand it by getting the list again from the server forming the query */
 			if (contact && e_contact_get (contact , E_CONTACT_IS_LIST)) {
-				EBook *book = NULL;
+				EBookClient *book_client = NULL;
 				ENameSelectorDialog *dialog;
 				ENameSelectorModel *model;
 				EContactStore *c_store;
-				GList *books, *l;
+				GSList *clients, *l;
 				gchar *uri = e_contact_get (contact, E_CONTACT_BOOK_URI);
 
 				dialog = e_name_selector_peek_dialog (name_selector);
 				model = e_name_selector_dialog_peek_model (dialog);
 				c_store = e_name_selector_model_peek_contact_store (model);
-				books = e_contact_store_get_books (c_store);
+				clients = e_contact_store_get_clients (c_store);
 
-				for (l = books; l; l = l->next) {
-					EBook *b = l->data;
-					if (g_str_equal (uri, e_book_get_uri (b))) {
-						book = b;
+				for (l = clients; l; l = l->next) {
+					EBookClient *b = l->data;
+					if (g_str_equal (uri, e_client_get_uri (E_CLIENT (b)))) {
+						book_client = b;
 						break;
 					}
 				}
 
-				if (book) {
-					GList *contacts = NULL;
+				if (book_client) {
+					GSList *contacts = NULL;
 					EContact *n_con = NULL;
-					gchar *qu;
-					EBookQuery *query;
+					gchar *query;
 
-					qu = g_strdup_printf ("(is \"full_name\" \"%s\")",
+					query = g_strdup_printf ("(is \"full_name\" \"%s\")",
 							(gchar *) e_contact_get (contact, E_CONTACT_FULL_NAME));
-					query = e_book_query_from_string (qu);
 
-					if (!e_book_get_contacts (book, query, &contacts, NULL)) {
+					if (!e_book_client_get_contacts_sync (book_client, query, &contacts, NULL, NULL)) {
 						g_warning ("Could not get contact from the book \n");
 					} else {
 						des = e_destination_new ();
 						n_con = contacts->data;
 
 						e_destination_set_contact (des, n_con, 0);
+						e_destination_set_client (des, book_client);
 						list_dests = e_destination_list_get_dests (des);
 
-						g_list_foreach (contacts, (GFunc) g_object_unref, NULL);
-						g_list_free (contacts);
+						g_slist_foreach (contacts, (GFunc) g_object_unref, NULL);
+						g_slist_free (contacts);
 					}
 
-					e_book_query_unref (query);
-					g_free (qu);
+					g_free (query);
 				}
-				g_list_free (books);
+				g_slist_free (clients);
 			} else {
 				card_dest.next = NULL;
 				card_dest.prev = NULL;
@@ -611,7 +608,7 @@ memo_page_fill_component (CompEditorPage *page,
 	MemoPagePrivate *priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	ECalComponentClassification classification;
 	ECalComponentDateTime start_date;
 	struct icaltimetype start_tt;
@@ -724,7 +721,7 @@ memo_page_fill_component (CompEditorPage *page,
 		gchar *name;
 		gchar *mailto;
 
-		e_cal_get_cal_address (client, &backend_addr, NULL);
+		e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 		/* Find the identity for the organizer or sentby field */
 		if (!get_current_identity (mpage, &name, &mailto)) {
@@ -888,7 +885,8 @@ source_changed_cb (ESourceComboBox *source_combo_box,
 	CompEditor *editor;
 	CompEditorFlags flags;
 	ESource *source;
-	ECal *client;
+	ECalClient *client;
+	GError *error = NULL;
 
 	if (comp_editor_page_get_updating (COMP_EDITOR_PAGE (mpage)))
 		return;
@@ -897,11 +895,14 @@ source_changed_cb (ESourceComboBox *source_combo_box,
 	flags = comp_editor_get_flags (editor);
 
 	source = e_source_combo_box_get_active (source_combo_box);
-	client = e_auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_JOURNAL);
+	client = e_cal_client_new (source, E_CAL_CLIENT_SOURCE_TYPE_MEMOS, &error);
 
-	if (!client || !e_cal_open (client, FALSE, NULL)) {
+	if (client)
+		g_signal_connect (client, "authenticate", G_CALLBACK (e_client_utils_authenticate_handler), NULL);
+
+	if (!client || !e_client_open_sync (E_CLIENT (client), FALSE, NULL, &error)) {
 		GtkWidget *dialog;
-		ECal *old_client;
+		ECalClient *old_client;
 
 		old_client = comp_editor_get_client (editor);
 
@@ -910,21 +911,25 @@ source_changed_cb (ESourceComboBox *source_combo_box,
 
 		e_source_combo_box_set_active (
 			E_SOURCE_COMBO_BOX (priv->source_selector),
-			e_cal_get_source (old_client));
+			e_client_get_source (E_CLIENT (old_client)));
 
 		dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
 						 GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
-						 _("Unable to open memos in '%s'."),
-						 e_source_peek_name (source));
+						 _("Unable to open memos in '%s': %s"),
+						 e_source_peek_name (source),
+						 error ? error->message : _("Unknown error"));
 		gtk_dialog_run (GTK_DIALOG (dialog));
 		gtk_widget_destroy (dialog);
+
+		if (error)
+			g_error_free (error);
 	} else {
 		comp_editor_set_client (editor, client);
 
 		if (client) {
 			gchar *backend_addr = NULL;
 
-			e_cal_get_cal_address (client, &backend_addr, NULL);
+			e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 			if (flags & COMP_EDITOR_IS_SHARED)
 				memo_page_select_organizer (mpage, backend_addr);
@@ -942,12 +947,12 @@ set_subscriber_info_string (MemoPage *mpage,
                             const gchar *backend_address)
 {
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	ESource *source;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (mpage));
 	client = comp_editor_get_client (editor);
-	source = e_cal_get_source (client);
+	source = e_client_get_source (E_CLIENT (client));
 
 	if (e_source_get_property (source, "subscriber")) {
 		g_free (mpage->priv->subscriber_info_text);
@@ -1097,7 +1102,7 @@ memo_page_select_organizer (MemoPage *mpage, const gchar *backend_address)
 	MemoPagePrivate *priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	const gchar *default_address;
 	gboolean subscribed_cal = FALSE;
 	ESource *source = NULL;
@@ -1110,7 +1115,7 @@ memo_page_select_organizer (MemoPage *mpage, const gchar *backend_address)
 	flags = comp_editor_get_flags (editor);
 
 	if (client)
-		source = e_cal_get_source (client);
+		source = e_client_get_source (E_CLIENT (client));
 	if (source)
 		user_addr = e_source_get_property (source, "subscriber");
 
diff --git a/calendar/gui/dialogs/recur-comp.c b/calendar/gui/dialogs/recur-comp.c
index 7793647723..3514c03dbf 100644
--- a/calendar/gui/dialogs/recur-comp.c
+++ b/calendar/gui/dialogs/recur-comp.c
@@ -32,7 +32,7 @@
 
 
 gboolean
-recur_component_dialog (ECal *client,
+recur_component_dialog (ECalClient *client,
 			ECalComponent *comp,
 			CalObjModType *mod,
 			GtkWindow *parent, gboolean delegated)
@@ -90,13 +90,13 @@ recur_component_dialog (ECal *client,
 	rb_this = gtk_radio_button_new_with_label (NULL, _("This Instance Only"));
 	gtk_container_add (GTK_CONTAINER (vbox), rb_this);
 
-	if (!e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_THISANDPRIOR)) {
+	if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_THISANDPRIOR)) {
 		rb_prior = gtk_radio_button_new_with_label_from_widget (GTK_RADIO_BUTTON (rb_this), _("This and Prior Instances"));
 		gtk_container_add (GTK_CONTAINER (vbox), rb_prior);
 	} else
 		rb_prior = NULL;
 
-	if (!e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_THISANDFUTURE)) {
+	if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_THISANDFUTURE)) {
 		rb_future = gtk_radio_button_new_with_label_from_widget (GTK_RADIO_BUTTON (rb_this), _("This and Future Instances"));
 		gtk_container_add (GTK_CONTAINER (vbox), rb_future);
 	} else
diff --git a/calendar/gui/dialogs/recur-comp.h b/calendar/gui/dialogs/recur-comp.h
index 47236ef8cd..7087daa166 100644
--- a/calendar/gui/dialogs/recur-comp.h
+++ b/calendar/gui/dialogs/recur-comp.h
@@ -26,11 +26,11 @@
 #define RECUR_COMP_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 #include <libecal/e-cal-util.h>
 
-gboolean recur_component_dialog (ECal *client,
+gboolean recur_component_dialog (ECalClient *client,
 				 ECalComponent *comp,
 				 CalObjModType *mod,
 				 GtkWindow *parent,
diff --git a/calendar/gui/dialogs/recurrence-page.c b/calendar/gui/dialogs/recurrence-page.c
index 8d2701fab2..bf8f1c191c 100644
--- a/calendar/gui/dialogs/recurrence-page.c
+++ b/calendar/gui/dialogs/recurrence-page.c
@@ -212,7 +212,7 @@ preview_recur (RecurrencePage *rpage)
 {
 	RecurrencePagePrivate *priv = rpage->priv;
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	ECalComponent *comp;
 	ECalComponentDateTime cdt;
 	GSList *l;
@@ -236,8 +236,8 @@ preview_recur (RecurrencePage *rpage)
 
 	e_cal_component_get_dtstart (priv->comp, &cdt);
 	if (cdt.tzid != NULL) {
-		/* FIXME Will e_cal_get_timezone really not return builtin zones? */
-		if (!e_cal_get_timezone (client, cdt.tzid, &zone, NULL))
+		/* FIXME Will e_cal_client_get_timezone_sync really not return builtin zones? */
+		if (!e_cal_client_get_timezone_sync (client, cdt.tzid, &zone, NULL, NULL))
 			zone = icaltimezone_get_builtin_timezone_from_tzid (cdt.tzid);
 	}
 	e_cal_component_set_dtstart (comp, &cdt);
@@ -586,7 +586,7 @@ sensitize_buttons (RecurrencePage *rpage)
 	gboolean read_only, sensitize = TRUE;
 	gint selected_rows;
 	icalcomponent *icalcomp;
-	ECal *client;
+	ECalClient *client;
 	const gchar *uid;
 
 	if (priv->comp == NULL)
@@ -602,27 +602,26 @@ sensitize_buttons (RecurrencePage *rpage)
 	selected_rows = gtk_tree_selection_count_selected_rows (
 		gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->exception_list)));
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	if (!read_only) {
 		e_cal_component_get_uid (priv->comp, &uid);
 
-		if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_CONV_TO_RECUR) && e_cal_get_object (client, uid, NULL, &icalcomp, NULL)) {
+		if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_CONV_TO_RECUR) && e_cal_client_get_object_sync (client, uid, NULL, &icalcomp, NULL, NULL)) {
 			read_only = TRUE;
 			icalcomponent_free (icalcomp);
 		}
 
 		if (!read_only) {
-			GList *list;
+			GSList *list = NULL;
 
 			/* see if we have detached instances */
-			if (e_cal_get_objects_for_uid (client, uid, &list, NULL)) {
-				if (list && g_list_length (list) > 1)
+			if (e_cal_client_get_objects_for_uid_sync (client, uid, &list, NULL, NULL)) {
+				if (list && g_slist_length (list) > 1)
 					read_only = TRUE;
 
-				g_list_foreach (list, (GFunc) g_object_unref, NULL);
-				g_list_free (list);
+				g_slist_foreach (list, (GFunc) g_object_unref, NULL);
+				g_slist_free (list);
 			}
 		}
 	}
@@ -1485,7 +1484,7 @@ fill_ending_date (RecurrencePage *rpage, struct icalrecurrencetype *r)
 {
 	RecurrencePagePrivate *priv = rpage->priv;
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (rpage));
 	client = comp_editor_get_client (editor);
@@ -1512,9 +1511,16 @@ fill_ending_date (RecurrencePage *rpage, struct icalrecurrencetype *r)
 					to_zone = e_meeting_store_get_timezone (priv->meeting_store);
 				else if (dt.tzid == NULL)
 					to_zone = icaltimezone_get_utc_timezone ();
-				else
+				else {
+					GError *error = NULL;
 					/* FIXME Error checking? */
-					e_cal_get_timezone (client, dt.tzid, &to_zone, NULL);
+					e_cal_client_get_timezone_sync (client, dt.tzid, &to_zone, NULL, &error);
+
+					if (error) {
+						g_debug ("%s: Failed to get timezone: %s", G_STRFUNC, error->message);
+						g_error_free (error);
+					}
+				}
 				from_zone = icaltimezone_get_utc_timezone ();
 
 				icaltimezone_convert_time (&r->until, from_zone, to_zone);
@@ -2069,7 +2075,7 @@ type_toggled_cb (GtkToggleButton *toggle,
 {
 	RecurrencePagePrivate *priv = rpage->priv;
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	gboolean read_only;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (rpage));
@@ -2079,8 +2085,7 @@ type_toggled_cb (GtkToggleButton *toggle,
 	sensitize_buttons (rpage);
 
 	/* enable/disable the 'Add' button */
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	if (!gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->recurs)) || read_only)
 		gtk_widget_set_sensitive (priv->exception_add, FALSE);
diff --git a/calendar/gui/dialogs/schedule-page.c b/calendar/gui/dialogs/schedule-page.c
index 26ea1cdf5c..c4191e68dc 100644
--- a/calendar/gui/dialogs/schedule-page.c
+++ b/calendar/gui/dialogs/schedule-page.c
@@ -68,16 +68,12 @@ sensitize_widgets (SchedulePage *spage)
 {
 	SchedulePagePrivate *priv = spage->priv;
 	CompEditor *editor;
-	ECal *client;
-	gboolean read_only;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (spage));
 	client = comp_editor_get_client (editor);
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
-
-	e_meeting_time_selector_set_read_only (priv->sel, read_only);
+	e_meeting_time_selector_set_read_only (priv->sel, e_client_is_readonly (E_CLIENT (client)));
 }
 
 /* Set date/time */
@@ -90,30 +86,43 @@ update_time (SchedulePage *spage,
 	CompEditor *editor;
 	struct icaltimetype start_tt, end_tt;
 	icaltimezone *start_zone = NULL, *end_zone = NULL;
-	ECal *client;
+	ECalClient *client;
 	gboolean all_day;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (spage));
 	client = comp_editor_get_client (editor);
 
-	/* Note that if we are creating a new event, the timezones may not be
-	   on the server, so we try to get the builtin timezone with the TZID
-	   first. */
-	start_zone = icaltimezone_get_builtin_timezone_from_tzid (start_date->tzid);
-	if (!start_zone) {
-		if (!e_cal_get_timezone (client, start_date->tzid, &start_zone, NULL)) {
-			/* FIXME: Handle error better. */
-			g_warning ("Couldn't get timezone from server: %s",
-				   start_date->tzid ? start_date->tzid : "");
+	if (start_date->tzid) {
+		/* Note that if we are creating a new event, the timezones may not be
+		   on the server, so we try to get the builtin timezone with the TZID
+		   first. */
+		start_zone = icaltimezone_get_builtin_timezone_from_tzid (start_date->tzid);
+		if (!start_zone) {
+			GError *error = NULL;
+
+			if (!e_cal_client_get_timezone_sync (client, start_date->tzid, &start_zone, NULL, &error)) {
+				/* FIXME: Handle error better. */
+				g_warning ("Couldn't get timezone '%s' from server: %s",
+					   start_date->tzid ? start_date->tzid : "",
+					   error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
+			}
 		}
 	}
 
-	end_zone = icaltimezone_get_builtin_timezone_from_tzid (end_date->tzid);
-	if (!end_zone) {
-		if (!e_cal_get_timezone (client, end_date->tzid, &end_zone, NULL)) {
-			/* FIXME: Handle error better. */
-			g_warning ("Couldn't get timezone from server: %s",
-				   end_date->tzid ? end_date->tzid : "");
+	if (end_date->tzid) {
+		end_zone = icaltimezone_get_builtin_timezone_from_tzid (end_date->tzid);
+		if (!end_zone) {
+			GError *error = NULL;
+			if (!e_cal_client_get_timezone_sync (client, end_date->tzid, &end_zone, NULL, &error)) {
+				/* FIXME: Handle error better. */
+				g_warning ("Couldn't get timezone '%s' from server: %s",
+					   end_date->tzid ? end_date->tzid : "",
+					   error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
+			}
 		}
 	}
 
diff --git a/calendar/gui/dialogs/select-source-dialog.c b/calendar/gui/dialogs/select-source-dialog.c
index 79905d5f01..4ae9f0a0d8 100644
--- a/calendar/gui/dialogs/select-source-dialog.c
+++ b/calendar/gui/dialogs/select-source-dialog.c
@@ -35,7 +35,7 @@
  * Implements dialog for allowing user to select a destination source.
  */
 ESource *
-select_source_dialog (GtkWindow *parent, ECalSourceType obj_type, ESource *except_source)
+select_source_dialog (GtkWindow *parent, ECalClientSourceType obj_type, ESource *except_source)
 {
 	GtkWidget *dialog;
 	ESourceList *source_list;
@@ -44,11 +44,11 @@ select_source_dialog (GtkWindow *parent, ECalSourceType obj_type, ESource *excep
 	GConfClient *conf_client;
 	const gchar *icon_name = NULL;
 
-	if (obj_type == E_CAL_SOURCE_TYPE_EVENT)
+	if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS)
 		gconf_key = "/apps/evolution/calendar/sources";
-	else if (obj_type == E_CAL_SOURCE_TYPE_TODO)
+	else if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS)
 		gconf_key = "/apps/evolution/tasks/sources";
-	else if (obj_type == E_CAL_SOURCE_TYPE_JOURNAL)
+	else if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS)
                 gconf_key = "/apps/evolution/memos/sources";
 	else
 		return NULL;
@@ -59,11 +59,11 @@ select_source_dialog (GtkWindow *parent, ECalSourceType obj_type, ESource *excep
 	/* create the dialog */
 	dialog = e_source_selector_dialog_new (parent, source_list);
 
-	if (obj_type == E_CAL_SOURCE_TYPE_EVENT)
+	if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_EVENTS)
 		icon_name = "x-office-calendar";
-	else if (obj_type == E_CAL_SOURCE_TYPE_TODO)
+	else if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_TASKS)
 		icon_name = "stock_todo";
-	else if (obj_type == E_CAL_SOURCE_TYPE_JOURNAL)
+	else if (obj_type == E_CAL_CLIENT_SOURCE_TYPE_MEMOS)
                 icon_name = "stock_journal";
 
 	if (icon_name)
diff --git a/calendar/gui/dialogs/select-source-dialog.h b/calendar/gui/dialogs/select-source-dialog.h
index 902ac3fc03..6d64fb825a 100644
--- a/calendar/gui/dialogs/select-source-dialog.h
+++ b/calendar/gui/dialogs/select-source-dialog.h
@@ -28,8 +28,8 @@
 
 #include <gtk/gtk.h>
 #include <libedataserver/e-source.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
-ESource *select_source_dialog (GtkWindow *parent, ECalSourceType type, ESource *except_source);
+ESource *select_source_dialog (GtkWindow *parent, ECalClientSourceType type, ESource *except_source);
 
 #endif
diff --git a/calendar/gui/dialogs/send-comp.c b/calendar/gui/dialogs/send-comp.c
index 070fb6b735..d67d9fb626 100644
--- a/calendar/gui/dialogs/send-comp.c
+++ b/calendar/gui/dialogs/send-comp.c
@@ -133,7 +133,7 @@ add_checkbox (GtkBox *where, const gchar *caption)
  * Return value: TRUE if the user clicked Yes, FALSE otherwise.
  **/
 gboolean
-send_component_dialog (GtkWindow *parent, ECal *client, ECalComponent *comp, gboolean new, gboolean *strip_alarms, gboolean *only_new_attendees)
+send_component_dialog (GtkWindow *parent, ECalClient *client, ECalComponent *comp, gboolean new, gboolean *strip_alarms, gboolean *only_new_attendees)
 {
 	ECalComponentVType vtype;
 	const gchar *id;
@@ -144,7 +144,7 @@ send_component_dialog (GtkWindow *parent, ECal *client, ECalComponent *comp, gbo
 	if (strip_alarms)
 		*strip_alarms = TRUE;
 
-	if (e_cal_get_save_schedules (client) || !component_has_recipients (comp))
+	if (e_cal_client_check_save_schedules (client) || !component_has_recipients (comp))
 		return FALSE;
 
 	vtype = e_cal_component_get_vtype (comp);
@@ -206,7 +206,7 @@ send_component_dialog (GtkWindow *parent, ECal *client, ECalComponent *comp, gbo
 }
 
 gboolean
-send_component_prompt_subject (GtkWindow *parent, ECal *client, ECalComponent *comp)
+send_component_prompt_subject (GtkWindow *parent, ECalClient *client, ECalComponent *comp)
 {
 	ECalComponentVType vtype;
 	const gchar *id;
diff --git a/calendar/gui/dialogs/send-comp.h b/calendar/gui/dialogs/send-comp.h
index 83f356b142..91584a7f4b 100644
--- a/calendar/gui/dialogs/send-comp.h
+++ b/calendar/gui/dialogs/send-comp.h
@@ -25,10 +25,10 @@
 #define SEND_COMP_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 
-gboolean send_component_dialog (GtkWindow *parent, ECal *client, ECalComponent *comp, gboolean new, gboolean *strip_alarms, gboolean *only_new_attendees);
-gboolean send_component_prompt_subject (GtkWindow *parent, ECal *client, ECalComponent *comp);
+gboolean send_component_dialog (GtkWindow *parent, ECalClient *client, ECalComponent *comp, gboolean new, gboolean *strip_alarms, gboolean *only_new_attendees);
+gboolean send_component_prompt_subject (GtkWindow *parent, ECalClient *client, ECalComponent *comp);
 
 #endif
diff --git a/calendar/gui/dialogs/task-details-page.c b/calendar/gui/dialogs/task-details-page.c
index 7f72dd3e38..bc828cf431 100644
--- a/calendar/gui/dialogs/task-details-page.c
+++ b/calendar/gui/dialogs/task-details-page.c
@@ -149,14 +149,13 @@ sensitize_widgets (TaskDetailsPage *tdpage)
 	TaskDetailsPagePrivate *priv = tdpage->priv;
 	CompEditor *editor;
 	GtkWidget *entry;
-	ECal *client;
+	ECalClient *client;
 	gboolean read_only;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (tdpage));
 	client = comp_editor_get_client (editor);
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	gtk_widget_set_sensitive (priv->status_combo, !read_only);
 	gtk_widget_set_sensitive (priv->priority_combo, !read_only);
diff --git a/calendar/gui/dialogs/task-editor.c b/calendar/gui/dialogs/task-editor.c
index f24db192b2..1e859cb293 100644
--- a/calendar/gui/dialogs/task-editor.c
+++ b/calendar/gui/dialogs/task-editor.c
@@ -148,7 +148,7 @@ task_editor_constructor (GType type,
 	CompEditorFlags flags;
 	TaskEditorPrivate *priv;
 	GtkActionGroup *action_group;
-	ECal *client;
+	ECalClient *client;
 	gboolean is_assigned;
 
 	/* Chain up to parent's constructor() method. */
@@ -168,8 +168,7 @@ task_editor_constructor (GType type,
 	gtk_action_group_set_visible (action_group, is_assigned);
 
 	if (is_assigned) {
-		if (e_cal_get_static_capability (
-			client, CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS))
+		if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS))
 			task_page_show_options (priv->task_page);
 		comp_editor_set_group_item (editor, TRUE);
 	}
@@ -380,7 +379,7 @@ task_editor_edit_comp (CompEditor *editor, ECalComponent *comp)
 {
 	TaskEditorPrivate *priv;
 	ECalComponentOrganizer organizer;
-	ECal *client;
+	ECalClient *client;
 	GSList *attendees = NULL;
 
 	priv = TASK_EDITOR_GET_PRIVATE (editor);
@@ -429,7 +428,7 @@ task_editor_edit_comp (CompEditor *editor, ECalComponent *comp)
 
 			if (ia != NULL)
 				e_meeting_attendee_set_edit_level (ia, E_MEETING_ATTENDEE_EDIT_STATUS);
-		} else if (e_cal_get_organizer_must_attend (client)) {
+		} else if (e_cal_client_check_organizer_must_attend (client)) {
 			EMeetingAttendee *ia;
 
 			ia = e_meeting_store_find_attendee (priv->model, organizer.value, &row);
@@ -466,7 +465,7 @@ task_editor_send_comp (CompEditor *editor,
 
 	comp = task_page_get_cancel_comp (priv->task_page);
 	if (comp != NULL) {
-		ECal *client;
+		ECalClient *client;
 		gboolean result;
 
 		client = e_meeting_store_get_client (priv->model);
@@ -488,7 +487,7 @@ task_editor_send_comp (CompEditor *editor,
 
 /**
  * task_editor_new:
- * @client: a ECal
+ * @client: a ECalClient
  *
  * Creates a new event editor dialog.
  *
@@ -496,11 +495,11 @@ task_editor_send_comp (CompEditor *editor,
  * editor could not be created.
  **/
 CompEditor *
-task_editor_new (ECal *client,
+task_editor_new (ECalClient *client,
                  EShell *shell,
                  CompEditorFlags flags)
 {
-	g_return_val_if_fail (E_IS_CAL (client), NULL);
+	g_return_val_if_fail (E_IS_CAL_CLIENT (client), NULL);
 	g_return_val_if_fail (E_IS_SHELL (shell), NULL);
 
 	return g_object_new (
diff --git a/calendar/gui/dialogs/task-editor.h b/calendar/gui/dialogs/task-editor.h
index f026acae0c..0808cd547d 100644
--- a/calendar/gui/dialogs/task-editor.h
+++ b/calendar/gui/dialogs/task-editor.h
@@ -65,7 +65,7 @@ struct _TaskEditorClass {
 };
 
 GType		task_editor_get_type		(void);
-CompEditor *	task_editor_new			(ECal *client,
+CompEditor *	task_editor_new			(ECalClient *client,
 						 EShell *shell,
 						 CompEditorFlags flags);
 void		task_editor_show_assignment	(TaskEditor *te);
diff --git a/calendar/gui/dialogs/task-page.c b/calendar/gui/dialogs/task-page.c
index bb18780250..12902ff6d4 100644
--- a/calendar/gui/dialogs/task-page.c
+++ b/calendar/gui/dialogs/task-page.c
@@ -34,11 +34,11 @@
 #include <glib/gi18n.h>
 #include <gdk/gdkkeysyms.h>
 #include <libedataserverui/e-category-completion.h>
+#include <libedataserverui/e-client-utils.h>
 #include <libedataserverui/e-source-combo-box.h>
 #include <misc/e-dateedit.h>
 #include "misc/e-buffer-tagger.h"
 #include <e-util/e-dialog-utils.h>
-#include "common/authentication.h"
 #include "../e-timezone-entry.h"
 #include "comp-editor.h"
 #include "comp-editor-util.h"
@@ -111,7 +111,7 @@ struct _TaskPagePrivate {
 	GtkWidget *attendees_label;
 
 	/* ListView stuff */
-	ECal *client;
+	ECalClient *client;
 	EMeetingStore *meeting_store;
 	EMeetingListView *list_view;
 	gint row;
@@ -264,7 +264,7 @@ sensitize_widgets (TaskPage *tpage)
 	TaskPagePrivate *priv = tpage->priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	GtkActionGroup *action_group;
 	GtkAction *action;
 	gboolean read_only, sens = TRUE, sensitize;
@@ -273,8 +273,7 @@ sensitize_widgets (TaskPage *tpage)
 	client = comp_editor_get_client (editor);
 	flags = comp_editor_get_flags (editor);
 
-	if (!e_cal_is_read_only (client, &read_only, NULL))
-		read_only = TRUE;
+	read_only = e_client_is_readonly (E_CLIENT (client));
 
 	if (flags & COMP_EDITOR_IS_ASSIGNED)
 		sens = flags & COMP_EDITOR_USER_ORG;
@@ -473,7 +472,7 @@ task_page_fill_widgets (CompEditorPage *page,
 	CompEditor *editor;
 	CompEditorFlags flags;
 	GtkAction *action;
-	ECal *client;
+	ECalClient *client;
 	GSList *l;
 	icalcomponent *icalcomp;
 	const gchar *categories, *uid;
@@ -555,10 +554,13 @@ task_page_fill_widgets (CompEditorPage *page,
 	   on the server, so we try to get the builtin timezone with the TZID
 	   first. */
 	if (!zone && d.tzid) {
-		if (!e_cal_get_timezone (client, d.tzid, &zone, NULL))
+		GError *error = NULL;
+		if (!e_cal_client_get_timezone_sync (client, d.tzid, &zone, NULL, &error))
 			/* FIXME: Handle error better. */
-			g_warning ("Couldn't get timezone from server: %s",
-				   d.tzid ? d.tzid : "");
+			g_warning ("Couldn't get timezone '%s' from server: %s",
+				   d.tzid ? d.tzid : "", error ? error->message : "Unknown error");
+			if (error)
+				g_error_free (error);
 	}
 
 	e_timezone_entry_set_timezone (E_TIMEZONE_ENTRY (priv->timezone),
@@ -611,7 +613,7 @@ task_page_fill_widgets (CompEditorPage *page,
 	comp_editor_set_classification (editor, cl);
 
 	e_cal_component_get_uid (comp, &uid);
-	if (e_cal_get_object (client, uid, NULL, &icalcomp, NULL)) {
+	if (e_cal_client_get_object_sync (client, uid, NULL, &icalcomp, NULL, NULL)) {
 		icalcomponent_free (icalcomp);
 		task_page_hide_options (tpage);
 	}
@@ -623,9 +625,9 @@ task_page_fill_widgets (CompEditorPage *page,
 	/* Source */
 	e_source_combo_box_set_active (
 		E_SOURCE_COMBO_BOX (priv->source_selector),
-		e_cal_get_source (client));
+		e_client_get_source (E_CLIENT (client)));
 
-	e_cal_get_cal_address (client, &backend_addr, NULL);
+	e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 	set_subscriber_info_string (tpage, backend_addr);
 
 	if (priv->is_assignment) {
@@ -646,14 +648,10 @@ task_page_fill_widgets (CompEditorPage *page,
 				gchar *string;
 
 				if (itip_organizer_is_user (comp, client) || itip_sentby_is_user (comp, client)) {
-					if (e_cal_get_static_capability (
-								client,
-								CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
+					if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
 						priv->user_org = TRUE;
 				} else {
-					if (e_cal_get_static_capability (
-								client,
-								CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
+					if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS))
 						gtk_widget_set_sensitive (priv->invite, FALSE);
 					gtk_widget_set_sensitive (priv->add, FALSE);
 					gtk_widget_set_sensitive (priv->edit, FALSE);
@@ -661,7 +659,7 @@ task_page_fill_widgets (CompEditorPage *page,
 					priv->user_org = FALSE;
 				}
 
-				if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_ORGANIZER) && (flags & COMP_EDITOR_DELEGATE))
+				if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_ORGANIZER) && (flags & COMP_EDITOR_DELEGATE))
 					string = g_strdup (priv->user_add);
 				else if ( organizer.cn != NULL)
 					string = g_strdup_printf ("%s <%s>", organizer.cn, strip);
@@ -714,7 +712,7 @@ task_page_fill_widgets (CompEditorPage *page,
 				backend_mailto = mailto = NULL;
 			}
 
-			if (client && e_cal_get_organizer_must_accept (client))
+			if (client && e_cal_client_check_organizer_must_accept (client))
 				e_meeting_attendee_set_status (
 					attendee, ICAL_PARTSTAT_NEEDSACTION);
 			else
@@ -748,7 +746,7 @@ task_page_fill_component (CompEditorPage *page,
 	ECalComponentDateTime date;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 	struct icaltimetype start_tt, due_tt;
 	gchar *cat, *str;
 	gboolean start_date_set, due_date_set, time_set;
@@ -898,7 +896,7 @@ task_page_fill_component (CompEditorPage *page,
 			gchar *name;
 			gchar *mailto;
 
-			e_cal_get_cal_address (client, &backend_addr, NULL);
+			e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 			/* Find the identity for the organizer or sentby field */
 			if (!get_current_identity (tpage, &name, &mailto)) {
@@ -1314,7 +1312,7 @@ attendee_added_cb (EMeetingListView *emlv,
 	TaskPagePrivate *priv = page->priv;
 	CompEditor *editor;
 	CompEditorFlags flags;
-	ECal *client;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (page));
 	client = comp_editor_get_client (editor);
@@ -1328,7 +1326,7 @@ attendee_added_cb (EMeetingListView *emlv,
 	/* do not remove here, it did EMeetingListView already */
 	e_meeting_attendee_set_delfrom (ia, g_strdup_printf ("MAILTO:%s", priv->user_add ? priv->user_add : ""));
 
-	if (!e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY)) {
+	if (!e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_DELEGATE_TO_MANY)) {
 		EMeetingAttendee *delegator;
 
 		gtk_widget_set_sensitive (priv->invite, FALSE);
@@ -1773,7 +1771,8 @@ source_changed_cb (ESourceComboBox *source_combo_box, TaskPage *tpage)
 	TaskPagePrivate *priv = tpage->priv;
 	CompEditor *editor;
 	ESource *source;
-	ECal *client;
+	ECalClient *client;
+	GError *error = NULL;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (tpage));
 	source = e_source_combo_box_get_active (source_combo_box);
@@ -1781,15 +1780,18 @@ source_changed_cb (ESourceComboBox *source_combo_box, TaskPage *tpage)
 	if (comp_editor_page_get_updating (COMP_EDITOR_PAGE (tpage)))
 		return;
 
-	client = e_auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_TODO);
+	client = e_cal_client_new (source, E_CAL_CLIENT_SOURCE_TYPE_TASKS, &error);
 	if (client) {
 		icaltimezone *zone;
 
 		zone = comp_editor_get_timezone (editor);
-		e_cal_set_default_timezone (client, zone, NULL);
+		e_cal_client_set_default_timezone (client, zone);
 	}
 
-	if (!client || !e_cal_open (client, FALSE, NULL)) {
+	if (client)
+		g_signal_connect (client, "authenticate", G_CALLBACK (e_client_utils_authenticate_handler), NULL);
+
+	if (!client || !e_client_open_sync (E_CLIENT (client), FALSE, NULL, &error)) {
 		GtkWidget *dialog;
 
 		if (client)
@@ -1799,18 +1801,22 @@ source_changed_cb (ESourceComboBox *source_combo_box, TaskPage *tpage)
 
 		e_source_combo_box_set_active (
 			E_SOURCE_COMBO_BOX (priv->source_selector),
-			e_cal_get_source (client));
+			e_client_get_source (E_CLIENT (client)));
 
 		dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
 						 GTK_MESSAGE_WARNING, GTK_BUTTONS_OK,
-						 _("Unable to open tasks in '%s'."),
-						 e_source_peek_name (source));
+						 _("Unable to open tasks in '%s': %s"),
+						 e_source_peek_name (source),
+						 error ? error->message : _("Unknown error"));
 		gtk_dialog_run (GTK_DIALOG (dialog));
 		gtk_widget_destroy (dialog);
+
+		if (error)
+			g_error_free (error);
 	} else {
 		comp_editor_set_client (editor, client);
 		comp_editor_page_changed (COMP_EDITOR_PAGE (tpage));
-		if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS) && priv->is_assignment)
+		if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_REQ_SEND_OPTIONS) && priv->is_assignment)
 			task_page_show_options (tpage);
 		else
 			task_page_hide_options (tpage);
@@ -1818,7 +1824,7 @@ source_changed_cb (ESourceComboBox *source_combo_box, TaskPage *tpage)
 		if (client) {
 			gchar *backend_addr = NULL;
 
-			e_cal_get_cal_address (client, &backend_addr, NULL);
+			e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &backend_addr, NULL, NULL);
 
 			if (priv->is_assignment)
 				task_page_select_organizer (tpage, backend_addr);
@@ -1835,12 +1841,12 @@ static void
 set_subscriber_info_string (TaskPage *tpage, const gchar *backend_address)
 {
 	CompEditor *editor;
-	ECal *client;
+	ECalClient *client;
 	ESource *source;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (tpage));
 	client = comp_editor_get_client (editor);
-	source = e_cal_get_source (client);
+	source = e_client_get_source (E_CLIENT (client));
 
 	if (e_source_get_property (source, "subscriber")) {
 		g_free (tpage->priv->subscriber_info_text);
@@ -1863,7 +1869,7 @@ task_page_send_options_clicked_cb (TaskPage *tpage)
 	CompEditor *editor;
 	GtkWidget *toplevel;
 	ESource *source;
-	ECal *client;
+	ECalClient *client;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (tpage));
 	client = comp_editor_get_client (editor);
@@ -1876,7 +1882,7 @@ task_page_send_options_clicked_cb (TaskPage *tpage)
 		e_send_options_utils_set_default_data (priv->sod, source, "task");
 	}
 
-	if (e_cal_get_static_capability (client, CAL_STATIC_CAPABILITY_NO_GEN_OPTIONS)) {
+	if (e_client_check_capability (E_CLIENT (client), CAL_STATIC_CAPABILITY_NO_GEN_OPTIONS)) {
 		e_send_options_set_need_general_options (priv->sod, FALSE);
 	}
 
@@ -2041,7 +2047,7 @@ task_page_select_organizer (TaskPage *tpage, const gchar *backend_address)
 	const gchar *default_address;
 	gboolean subscribed_cal = FALSE;
 	ESource *source = NULL;
-	ECal *client;
+	ECalClient *client;
 	const gchar *user_addr = NULL;
 	gint ii;
 
@@ -2049,7 +2055,7 @@ task_page_select_organizer (TaskPage *tpage, const gchar *backend_address)
 	client = comp_editor_get_client (editor);
 
 	if (client)
-		source = e_cal_get_source (client);
+		source = e_client_get_source (E_CLIENT (client));
 	if (source)
 		user_addr = e_source_get_property (source, "subscriber");
 
@@ -2094,7 +2100,7 @@ task_page_select_organizer (TaskPage *tpage, const gchar *backend_address)
 TaskPage *
 task_page_construct (TaskPage *tpage,
                      EMeetingStore *meeting_store,
-                     ECal *client)
+                     ECalClient *client)
 {
 	TaskPagePrivate *priv;
 	GtkTreeModel *model;
@@ -2155,7 +2161,7 @@ TaskPage *
 task_page_new (EMeetingStore *model, CompEditor *editor)
 {
 	TaskPage *tpage;
-	ECal *client;
+	ECalClient *client;
 
 	tpage = g_object_new (TYPE_TASK_PAGE, "editor", editor, NULL);
 	client = comp_editor_get_client (editor);
diff --git a/calendar/gui/dialogs/task-page.h b/calendar/gui/dialogs/task-page.h
index 007dcdeec4..9d713deaef 100644
--- a/calendar/gui/dialogs/task-page.h
+++ b/calendar/gui/dialogs/task-page.h
@@ -72,7 +72,7 @@ struct _TaskPageClass {
 GType		task_page_get_type		(void);
 TaskPage *	task_page_construct		(TaskPage *epage,
 						 EMeetingStore *model,
-						 ECal *client);
+						 ECalClient *client);
 TaskPage *	task_page_new			(EMeetingStore *model,
 						 CompEditor *editor);
 ECalComponent *	task_page_get_cancel_comp	(TaskPage *page);
diff --git a/calendar/gui/e-cal-component-preview.c b/calendar/gui/e-cal-component-preview.c
index c964a6f1ed..d2c979151f 100644
--- a/calendar/gui/e-cal-component-preview.c
+++ b/calendar/gui/e-cal-component-preview.c
@@ -70,7 +70,7 @@ clear_comp_info (ECalComponentPreview *preview)
    returns whether component in the preview changed */
 static gboolean
 update_comp_info (ECalComponentPreview *preview,
-                  ECal *ecal,
+                  ECalClient *client,
                   ECalComponent *comp)
 {
 	ECalComponentPreviewPrivate *priv;
@@ -81,7 +81,7 @@ update_comp_info (ECalComponentPreview *preview,
 
 	priv = preview->priv;
 
-	if (!E_IS_CAL_COMPONENT (comp) || !E_IS_CAL (ecal)) {
+	if (!E_IS_CAL_COMPONENT (comp) || !E_IS_CAL_CLIENT (client)) {
 		changed = !priv->cal_uid;
 		clear_comp_info (preview);
 	} else {
@@ -92,7 +92,7 @@ update_comp_info (ECalComponentPreview *preview,
 		gint *sequence = NULL;
 		gint comp_sequence;
 
-		cal_uid = g_strdup (e_source_peek_uid (e_cal_get_source (ecal)));
+		cal_uid = g_strdup (e_source_peek_uid (e_client_get_source (E_CLIENT (client))));
 		e_cal_component_get_uid (comp, &uid);
 		comp_uid = g_strdup (uid);
 		e_cal_component_get_last_modified (comp, &itm);
@@ -128,7 +128,7 @@ update_comp_info (ECalComponentPreview *preview,
 /* Converts a time_t to a string, relative to the specified timezone */
 static gchar *
 timet_to_str_with_zone (ECalComponentDateTime *dt,
-                        ECal *ecal,
+                        ECalClient *client,
                         icaltimezone *default_zone,
                         gboolean use_24_hour_format)
 {
@@ -139,7 +139,7 @@ timet_to_str_with_zone (ECalComponentDateTime *dt,
 
 	if (dt->tzid) {
 		/* If we can't find the zone, we'll guess its "local" */
-		if (!e_cal_get_timezone (ecal, dt->tzid, &zone, NULL))
+		if (!e_cal_client_get_timezone_sync (client, dt->tzid, &zone, NULL, NULL))
 			zone = NULL;
 	} else if (dt->value->is_utc) {
 		zone = icaltimezone_get_utc_timezone ();
@@ -161,7 +161,7 @@ timet_to_str_with_zone (ECalComponentDateTime *dt,
 
 static void
 cal_component_preview_write_html (GString *buffer,
-                                  ECal *ecal,
+                                  ECalClient *client,
                                   ECalComponent *comp,
                                   icaltimezone *default_zone,
                                   gboolean use_24_hour_format)
@@ -240,7 +240,7 @@ cal_component_preview_write_html (GString *buffer,
 	e_cal_component_get_dtstart (comp, &dt);
 	if (dt.value != NULL) {
 		str = timet_to_str_with_zone (
-			&dt, ecal, default_zone, use_24_hour_format);
+			&dt, client, default_zone, use_24_hour_format);
 		g_string_append_printf (
 			buffer, "<TR><TD VALIGN=\"TOP\" ALIGN=\"RIGHT\">"
 			"<B>%s</B></TD><TD>%s</TD></TR>",
@@ -254,7 +254,7 @@ cal_component_preview_write_html (GString *buffer,
 	e_cal_component_get_dtend (comp, &dt);
 	if (dt.value != NULL) {
 		str = timet_to_str_with_zone (
-			&dt, ecal, default_zone, use_24_hour_format);
+			&dt, client, default_zone, use_24_hour_format);
 		g_string_append_printf (
 			buffer, "<TR><TD VALIGN=\"TOP\" ALIGN=\"RIGHT\">"
 			"<B>%s</B></TD><TD>%s</TD></TR>",
@@ -268,7 +268,7 @@ cal_component_preview_write_html (GString *buffer,
 	e_cal_component_get_due (comp, &dt);
 	if (dt.value != NULL) {
 		str = timet_to_str_with_zone (
-			&dt, ecal, default_zone, use_24_hour_format);
+			&dt, client, default_zone, use_24_hour_format);
 		g_string_append_printf (
 			buffer, "<TR><TD VALIGN=\"TOP\" ALIGN=\"RIGHT\">"
 			"<B>%s</B></TD><TD>%s</TD></TR>",
@@ -444,7 +444,7 @@ e_cal_component_preview_new (void)
 
 void
 e_cal_component_preview_display (ECalComponentPreview *preview,
-                                 ECal *ecal,
+                                 ECalClient *client,
                                  ECalComponent *comp,
                                  icaltimezone *zone,
                                  gboolean use_24_hour_format)
@@ -456,14 +456,14 @@ e_cal_component_preview_display (ECalComponentPreview *preview,
 
 	/* do not update preview when setting the same component as last time,
 	   which even didn't change */
-	if (!update_comp_info (preview, ecal, comp))
+	if (!update_comp_info (preview, client, comp))
 		return;
 
 	/* XXX The initial buffer size is arbitrary.  Tune it. */
 
 	buffer = g_string_sized_new (4096);
 	cal_component_preview_write_html (
-		buffer, ecal, comp, zone, use_24_hour_format);
+		buffer, client, comp, zone, use_24_hour_format);
 	e_web_view_load_string (E_WEB_VIEW (preview), buffer->str);
 	g_string_free (buffer, TRUE);
 }
diff --git a/calendar/gui/e-cal-component-preview.h b/calendar/gui/e-cal-component-preview.h
index f713df7321..091f66c252 100644
--- a/calendar/gui/e-cal-component-preview.h
+++ b/calendar/gui/e-cal-component-preview.h
@@ -25,7 +25,7 @@
 #define E_CAL_COMPONENT_PREVIEW_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <misc/e-web-view.h>
 
 /* Standard GObject macros */
@@ -69,7 +69,7 @@ struct _ECalComponentPreviewClass {
 GType		e_cal_component_preview_get_type (void);
 GtkWidget *	e_cal_component_preview_new	(void);
 void		e_cal_component_preview_display	(ECalComponentPreview *preview,
-						 ECal *ecal,
+						 ECalClient *client,
 						 ECalComponent *comp,
 						 icaltimezone *zone,
 						 gboolean use_24_hour_format);
diff --git a/calendar/gui/e-cal-config.h b/calendar/gui/e-cal-config.h
index 7751c3e42f..f803e99285 100644
--- a/calendar/gui/e-cal-config.h
+++ b/calendar/gui/e-cal-config.h
@@ -24,7 +24,7 @@
 #ifndef __E_CAL_CONFIG_H__
 #define __E_CAL_CONFIG_H__
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include "e-util/e-config.h"
 
 /* Standard GObject macros */
@@ -74,7 +74,7 @@ struct _ECalConfigTargetSource {
 	EConfigTarget target;
 
 	struct _ESource *source;
-        ECalSourceType source_type;
+        ECalClientSourceType source_type;
 };
 
 struct _ECalConfigTargetPrefs {
diff --git a/calendar/gui/e-cal-list-view.c b/calendar/gui/e-cal-list-view.c
index 7893dae0e8..c287b7a6ca 100644
--- a/calendar/gui/e-cal-list-view.c
+++ b/calendar/gui/e-cal-list-view.c
@@ -102,7 +102,6 @@ e_cal_list_view_class_init (ECalListViewClass *class)
 static void
 e_cal_list_view_init (ECalListView *cal_list_view)
 {
-	cal_list_view->query = NULL;
 	cal_list_view->table = NULL;
 	cal_list_view->cursor_event = NULL;
 	cal_list_view->set_table_id = 0;
@@ -330,13 +329,6 @@ e_cal_list_view_dispose (GObject *object)
 
 	cal_list_view = E_CAL_LIST_VIEW (object);
 
-	if (cal_list_view->query) {
-		g_signal_handlers_disconnect_matched (cal_list_view->query, G_SIGNAL_MATCH_DATA,
-						      0, 0, NULL, NULL, cal_list_view);
-		g_object_unref (cal_list_view->query);
-		cal_list_view->query = NULL;
-	}
-
 	if (cal_list_view->set_table_id) {
 		g_source_remove (cal_list_view->set_table_id);
 		cal_list_view->set_table_id = 0;
diff --git a/calendar/gui/e-cal-list-view.h b/calendar/gui/e-cal-list-view.h
index faf37bbc9f..ed4636f753 100644
--- a/calendar/gui/e-cal-list-view.h
+++ b/calendar/gui/e-cal-list-view.h
@@ -67,9 +67,6 @@ struct _ECalListView {
 	/* The main display table */
 	ETable *table;
 
-	/* S-expression for query and the query object */
-	ECalView *query;
-
 	/* The default category for new events */
 	gchar *default_category;
 
diff --git a/calendar/gui/e-cal-model-calendar.c b/calendar/gui/e-cal-model-calendar.c
index 4ac73089bb..ea8dd7bba7 100644
--- a/calendar/gui/e-cal-model-calendar.c
+++ b/calendar/gui/e-cal-model-calendar.c
@@ -130,7 +130,7 @@ get_dtend (ECalModelCalendar *model, ECalModelComponent *comp_data)
 		tt_end = icalproperty_get_dtend (prop);
 
 		if (icaltime_get_tzid (tt_end)
-		    && e_cal_get_timezone (comp_data->client, icaltime_get_tzid (tt_end), &zone, NULL))
+		    && e_cal_client_get_timezone_sync (comp_data->client, icaltime_get_tzid (tt_end), &zone, NULL, NULL))
 			got_zone = TRUE;
 
 		model_zone = e_cal_model_get_timezone (E_CAL_MODEL (model));
@@ -295,6 +295,7 @@ ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 	CalObjModType mod = CALOBJ_MOD_ALL;
 	ECalComponent *comp;
 	ECalModelCalendar *model = (ECalModelCalendar *) etm;
+	GError *error = NULL;
 
 	g_return_if_fail (E_IS_CAL_MODEL_CALENDAR (model));
 	g_return_if_fail (col >= 0 && col < E_CAL_MODEL_CALENDAR_FIELD_LAST);
@@ -335,7 +336,7 @@ ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 		break;
 	}
 
-	if (e_cal_modify_object (comp_data->client, comp_data->icalcomp, mod, NULL)) {
+	if (e_cal_client_modify_object_sync (comp_data->client, comp_data->icalcomp, mod, NULL, &error)) {
 		gboolean strip_alarms = TRUE;
 
 		if (itip_organizer_is_user (comp, comp_data->client) &&
@@ -348,7 +349,7 @@ ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 				const gchar *uid = NULL;
 
 				e_cal_component_get_uid (comp, &uid);
-				if (e_cal_get_object (comp_data->client, uid, NULL, &icalcomp, NULL) && icalcomp) {
+				if (e_cal_client_get_object_sync (comp_data->client, uid, NULL, &icalcomp, NULL, NULL) && icalcomp) {
 					send_comp = e_cal_component_new ();
 					if (!e_cal_component_set_icalcomponent (send_comp, icalcomp)) {
 						icalcomponent_free (icalcomp);
@@ -365,9 +366,11 @@ ecmc_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 				g_object_unref (send_comp);
 		}
 	} else {
-		g_warning (G_STRLOC ": Could not modify the object!");
+		g_warning (G_STRLOC ": Could not modify the object! %s", error ? error->message : "Unknown error");
 
 		/* FIXME Show error dialog */
+		if (error)
+			g_error_free (error);
 	}
 
 	g_object_unref (comp);
diff --git a/calendar/gui/e-cal-model-memos.c b/calendar/gui/e-cal-model-memos.c
index 0356dacf0c..59a48d031c 100644
--- a/calendar/gui/e-cal-model-memos.c
+++ b/calendar/gui/e-cal-model-memos.c
@@ -140,6 +140,7 @@ ecmm_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 {
 	ECalModelComponent *comp_data;
 	ECalModelMemos *model = (ECalModelMemos *) etm;
+	GError *error = NULL;
 
 	g_return_if_fail (E_IS_CAL_MODEL_MEMOS (model));
 	g_return_if_fail (col >= 0 && col < E_CAL_MODEL_MEMOS_FIELD_LAST);
@@ -157,10 +158,12 @@ ecmm_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 	}
 
 	/* TODO ask about mod type */
-	if (!e_cal_modify_object (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL)) {
-		g_warning (G_STRLOC ": Could not modify the object!");
+	if (!e_cal_client_modify_object_sync (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL, &error)) {
+		g_warning (G_STRLOC ": Could not modify the object! %s", error ? error->message : "Unknown error");
 
 		/* TODO Show error dialog */
+		if (error)
+			g_error_free (error);
 	}
 }
 
diff --git a/calendar/gui/e-cal-model-tasks.c b/calendar/gui/e-cal-model-tasks.c
index ff829e319f..51811c783f 100644
--- a/calendar/gui/e-cal-model-tasks.c
+++ b/calendar/gui/e-cal-model-tasks.c
@@ -325,7 +325,7 @@ get_completed (ECalModelComponent *comp_data)
 		comp_data->completed->tt = tt_completed;
 
 		if (icaltime_get_tzid (tt_completed)
-		    && e_cal_get_timezone (comp_data->client, icaltime_get_tzid (tt_completed), &zone, NULL))
+		    && e_cal_client_get_timezone_sync (comp_data->client, icaltime_get_tzid (tt_completed), &zone, NULL, NULL))
 			comp_data->completed->zone = zone;
 		else
 			comp_data->completed->zone = NULL;
@@ -355,7 +355,7 @@ get_due (ECalModelComponent *comp_data)
 		comp_data->due->tt = tt_due;
 
 		if (icaltime_get_tzid (tt_due)
-		    && e_cal_get_timezone (comp_data->client, icaltime_get_tzid (tt_due), &zone, NULL))
+		    && e_cal_client_get_timezone_sync (comp_data->client, icaltime_get_tzid (tt_due), &zone, NULL, NULL))
 			comp_data->due->zone = zone;
 		else
 			comp_data->due->zone = NULL;
@@ -525,7 +525,7 @@ get_due_status (ECalModelTasks *model, ECalModelComponent *comp_data)
 
 			/* Get the current time in the same timezone as the DUE date.*/
 			tzid = icalparameter_get_tzid (param);
-			if (!e_cal_get_timezone (comp_data->client, tzid, &zone, NULL))
+			if (!e_cal_client_get_timezone_sync (comp_data->client, tzid, &zone, NULL, NULL))
 				return E_CAL_MODEL_TASKS_DUE_FUTURE;
 
 			now_tt = icaltime_current_time_with_zone (zone);
@@ -1252,13 +1252,17 @@ void e_cal_model_tasks_mark_comp_incomplete (ECalModelTasks *model, ECalModelCom
 static void
 commit_component_changes (ECalModelComponent *comp_data)
 {
+	GError *error = NULL;
+
 	g_return_if_fail (comp_data != NULL);
 
 	/* FIXME ask about mod type */
-	if (!e_cal_modify_object (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL)) {
-		g_warning (G_STRLOC ": Could not modify the object!");
+	if (!e_cal_client_modify_object_sync (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL, &error)) {
+		g_warning (G_STRLOC ": Could not modify the object! %s", error ? error->message : "Unknown error");
 
 		/* FIXME Show error dialog */
+		if (error)
+			g_error_free (error);
 	}
 }
 
diff --git a/calendar/gui/e-cal-model.c b/calendar/gui/e-cal-model.c
index a2e0418cbc..5e0c9cc337 100644
--- a/calendar/gui/e-cal-model.c
+++ b/calendar/gui/e-cal-model.c
@@ -30,6 +30,7 @@
 #include <glib/gi18n.h>
 #include <libedataserver/e-flag.h>
 #include <libedataserver/e-time-utils.h>
+#include <libecal/e-cal-client-view.h>
 #include <libecal/e-cal-time-util.h>
 #include "comp-util.h"
 #include "e-cal-model.h"
@@ -41,8 +42,8 @@
 #include "e-util/e-util-enumtypes.h"
 
 typedef struct {
-	ECal *client;
-	ECalView *query;
+	ECalClient *client;
+	ECalClientView *view;
 
 	gboolean do_query;
 } ECalModelClient;
@@ -52,7 +53,7 @@ struct _ECalModelPrivate {
 	GList *clients;
 
 	/* The default client in the list */
-	ECal *default_client;
+	ECalClient *default_client;
 
 	/* Array for storing the objects. Each element is of type ECalModelComponent */
 	GPtrArray *objects;
@@ -108,9 +109,9 @@ struct _ECalModelPrivate {
 	gboolean in_modified;
 	gboolean in_removed;
 
-	GList *notify_added;
-	GList *notify_modified;
-	GList *notify_removed;
+	GSList *notify_added;
+	GSList *notify_modified;
+	GSList *notify_removed;
 
 	GMutex *notify_lock;
 };
@@ -129,8 +130,8 @@ static gchar *ecm_value_to_string (ETableModel *etm, gint col, gconstpointer val
 
 static const gchar *ecm_get_color_for_component (ECalModel *model, ECalModelComponent *comp_data);
 
-static ECalModelClient *add_new_client (ECalModel *model, ECal *client, gboolean do_query);
-static ECalModelClient *find_client_data (ECalModel *model, ECal *client);
+static ECalModelClient *add_new_client (ECalModel *model, ECalClient *client, gboolean do_query);
+static ECalModelClient *find_client_data (ECalModel *model, ECalClient *client);
 static void remove_client_objects (ECalModel *model, ECalModelClient *client_data);
 static void remove_client (ECalModel *model, ECalModelClient *client_data);
 
@@ -156,9 +157,6 @@ enum {
 	ROW_APPENDED,
 	COMPS_DELETED,
 	CAL_VIEW_PROGRESS,
-	#ifndef E_CAL_DISABLE_DEPRECATED
-	CAL_VIEW_DONE,
-	#endif
 	CAL_VIEW_COMPLETE,
 	STATUS_MESSAGE,
 	TIMEZONE_CHANGED,
@@ -385,15 +383,15 @@ cal_model_dispose (GObject *object)
 
 			g_signal_handlers_disconnect_matched (client_data->client, G_SIGNAL_MATCH_DATA,
 							      0, 0, NULL, NULL, object);
-			if (client_data->query)
-				g_signal_handlers_disconnect_matched (client_data->query, G_SIGNAL_MATCH_DATA,
+			if (client_data->view)
+				g_signal_handlers_disconnect_matched (client_data->view, G_SIGNAL_MATCH_DATA,
 								      0, 0, NULL, NULL, object);
 
 			priv->clients = g_list_remove (priv->clients, client_data);
 
 			g_object_unref (client_data->client);
-			if (client_data->query)
-				g_object_unref (client_data->query);
+			if (client_data->view)
+				g_object_unref (client_data->view);
 			g_free (client_data);
 		}
 
@@ -493,9 +491,9 @@ e_cal_model_class_init (ECalModelClass *class)
 		PROP_DEFAULT_CLIENT,
 		g_param_spec_object (
 			"default-client",
-			"Default Client",
+			"Default ECalClient",
 			NULL,
-			E_TYPE_CAL,
+			E_TYPE_CAL_CLIENT,
 			G_PARAM_READWRITE));
 
 	g_object_class_install_property (
@@ -646,25 +644,14 @@ e_cal_model_class_init (ECalModelClass *class)
 			      e_marshal_VOID__STRING_INT_INT,
 			      G_TYPE_NONE, 3, G_TYPE_STRING, G_TYPE_INT, G_TYPE_INT);
 
-	#ifndef E_CAL_DISABLE_DEPRECATED
-	signals[CAL_VIEW_DONE] =
-		g_signal_new ("cal_view_done",
-			      G_TYPE_FROM_CLASS (class),
-			      G_SIGNAL_RUN_LAST,
-			      G_STRUCT_OFFSET (ECalModelClass, cal_view_done),
-			      NULL, NULL,
-			      e_marshal_VOID__INT_INT,
-			      G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
-	#endif
-
 	signals[CAL_VIEW_COMPLETE] =
 		g_signal_new ("cal_view_complete",
 			      G_TYPE_FROM_CLASS (class),
 			      G_SIGNAL_RUN_LAST,
 			      G_STRUCT_OFFSET (ECalModelClass, cal_view_complete),
 			      NULL, NULL,
-			      e_marshal_VOID__INT_STRING_INT,
-			      G_TYPE_NONE, 3, G_TYPE_INT, G_TYPE_STRING, G_TYPE_INT);
+			      e_marshal_VOID__BOXED_INT,
+			      G_TYPE_NONE, 2, G_TYPE_ERROR, G_TYPE_INT);
 
 	signals[STATUS_MESSAGE] = g_signal_new (
 		"status-message",
@@ -827,7 +814,7 @@ get_dtstart (ECalModel *model, ECalModelComponent *comp_data)
 		tt_start = icalproperty_get_dtstart (prop);
 
 		if (icaltime_get_tzid (tt_start)
-		    && e_cal_get_timezone (comp_data->client, icaltime_get_tzid (tt_start), &zone, NULL))
+		    && e_cal_client_get_timezone_sync (comp_data->client, icaltime_get_tzid (tt_start), &zone, NULL, NULL))
 			got_zone = TRUE;
 
 		if (e_cal_model_get_flags (model) & E_CAL_MODEL_FLAGS_EXPAND_RECURRENCES) {
@@ -1080,7 +1067,7 @@ set_description (ECalModelComponent *comp_data, const gchar *value)
 }
 
 static void
-datetime_to_zone (ECal *client, struct icaltimetype *tt, icaltimezone *tt_zone, const gchar *tzid)
+datetime_to_zone (ECalClient *client, struct icaltimetype *tt, icaltimezone *tt_zone, const gchar *tzid)
 {
 	icaltimezone *from, *to;
 	const gchar *tt_tzid = NULL;
@@ -1098,7 +1085,7 @@ datetime_to_zone (ECal *client, struct icaltimetype *tt, icaltimezone *tt_zone,
 	to = icaltimezone_get_builtin_timezone_from_tzid (tzid);
 	if (!to) {
 		/* do not check failure here, maybe the zone is not available there */
-		e_cal_get_timezone (client, tzid, &to, NULL);
+		e_cal_client_get_timezone_sync (client, tzid, &to, NULL, NULL);
 	}
 
 	icaltimezone_convert_time (tt, from, to);
@@ -1196,6 +1183,7 @@ ecm_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 	ECalModelPrivate *priv;
 	ECalModelComponent *comp_data;
 	ECalModel *model = (ECalModel *) etm;
+	GError *error = NULL;
 
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
@@ -1226,10 +1214,12 @@ ecm_set_value_at (ETableModel *etm, gint col, gint row, gconstpointer value)
 	}
 
 	/* FIXME ask about mod type */
-	if (!e_cal_modify_object (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL)) {
-		g_warning (G_STRLOC ": Could not modify the object!");
+	if (!e_cal_client_modify_object_sync (comp_data->client, comp_data->icalcomp, CALOBJ_MOD_ALL, NULL, &error)) {
+		g_warning (G_STRLOC ": Could not modify the object! %s", error ? error->message : "Unknown error");
 
 		/* FIXME Show error dialog */
+		if (error)
+			g_error_free (error);
 	}
 }
 
@@ -1248,7 +1238,7 @@ gboolean
 e_cal_model_test_row_editable (ECalModel *model, gint row)
 {
 	gboolean readonly;
-	ECal *cal = NULL;
+	ECalClient *client = NULL;
 
 	if (row != -1) {
 		ECalModelComponent *comp_data;
@@ -1256,17 +1246,16 @@ e_cal_model_test_row_editable (ECalModel *model, gint row)
 		comp_data = e_cal_model_get_component_at (model, row);
 
 		if (comp_data)
-			cal = comp_data->client;
+			client = comp_data->client;
 
 	} else {
-		cal = e_cal_model_get_default_client (model);
+		client = e_cal_model_get_default_client (model);
 	}
 
-	readonly = cal == NULL;
+	readonly = client == NULL;
 
 	if (!readonly)
-		if (!e_cal_is_read_only (cal, &readonly, NULL))
-			readonly = TRUE;
+		readonly = e_client_is_readonly (E_CLIENT (client));
 
 	return !readonly;
 }
@@ -1305,6 +1294,8 @@ ecm_append_row (ETableModel *etm, ETableModel *source, gint row)
 	ECalModelClass *model_class;
 	ECalModelComponent *comp_data;
 	ECalModel *model = (ECalModel *) etm;
+	gchar *uid = NULL;
+	GError *error = NULL;
 
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 	g_return_if_fail (E_IS_TABLE_MODEL (source));
@@ -1316,7 +1307,7 @@ ecm_append_row (ETableModel *etm, ETableModel *source, gint row)
 		g_object_ref (comp_data->client);
 
 	/* guard against saving before the calendar is open */
-	if (!(comp_data->client && e_cal_get_load_state (comp_data->client) == E_CAL_LOAD_LOADED)) {
+	if (!comp_data->client || !e_client_is_opened (E_CLIENT (comp_data->client))) {
 		g_object_unref (comp_data);
 		return;
 	}
@@ -1353,14 +1344,20 @@ ecm_append_row (ETableModel *etm, ETableModel *source, gint row)
 		model_class->fill_component_from_model (model, comp_data, source, row);
 	}
 
-	if (!e_cal_create_object (comp_data->client, comp_data->icalcomp, NULL, NULL)) {
-		g_warning (G_STRLOC ": Could not create the object!");
+	if (!e_cal_client_create_object_sync (comp_data->client, comp_data->icalcomp, &uid, NULL, &error)) {
+		g_warning (G_STRLOC ": Could not create the object! %s", error ? error->message : "Unknown error");
 
 		/* FIXME: show error dialog */
+		if (error)
+			g_error_free (error);
 	} else {
+		if (uid)
+			icalcomponent_set_uid (comp_data->icalcomp, uid);
+
 		g_signal_emit (G_OBJECT (model), signals[ROW_APPENDED], 0);
 	}
 
+	g_free (uid);
 	g_object_unref (comp_data);
 }
 
@@ -1561,7 +1558,7 @@ ecm_get_color_for_component (ECalModel *model, ECalModelComponent *comp_data)
 
 	g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);
 
-	source = e_cal_get_source (comp_data->client);
+	source = e_client_get_source (E_CLIENT (comp_data->client));
 	color_spec = e_source_peek_color_spec (source);
 	if (color_spec != NULL) {
 		g_free (comp_data->color);
@@ -1579,7 +1576,7 @@ ecm_get_color_for_component (ECalModel *model, ECalModelComponent *comp_data)
 
 		for (l = assigned_colors[i].uris; l != NULL; l = l->next) {
 			if (!strcmp ((const gchar *) l->data,
-				     e_cal_get_uri (comp_data->client)))
+				     e_client_get_uri (E_CLIENT (comp_data->client))))
 			{
 				return assigned_colors[i].color;
 			}
@@ -1588,7 +1585,7 @@ ecm_get_color_for_component (ECalModel *model, ECalModelComponent *comp_data)
 
 	/* return the first unused color */
 	assigned_colors[first_empty].uris = g_list_append (assigned_colors[first_empty].uris,
-							   g_strdup (e_cal_get_uri (comp_data->client)));
+							   g_strdup (e_client_get_uri (E_CLIENT (comp_data->client))));
 
 	return assigned_colors[first_empty].color;
 }
@@ -1887,7 +1884,7 @@ e_cal_model_set_work_day_start_minute (ECalModel *model,
 	g_object_notify (G_OBJECT (model), "work-day-start-minute");
 }
 
-ECal *
+ECalClient *
 e_cal_model_get_default_client (ECalModel *model)
 {
 	ECalModelPrivate *priv;
@@ -1913,7 +1910,7 @@ e_cal_model_get_default_client (ECalModel *model)
 }
 
 void
-e_cal_model_set_default_client (ECalModel *model, ECal *client)
+e_cal_model_set_default_client (ECalModel *model, ECalClient *client)
 {
 	ECalModelPrivate *priv;
 	ECalModelClient *client_data;
@@ -1921,7 +1918,7 @@ e_cal_model_set_default_client (ECalModel *model, ECal *client)
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
 	if (client != NULL)
-		g_return_if_fail (E_IS_CAL (client));
+		g_return_if_fail (E_IS_CAL_CLIENT (client));
 
 	priv = model->priv;
 
@@ -1951,7 +1948,7 @@ GList *
 e_cal_model_get_client_list (ECalModel *model)
 {
 	GList *list = NULL, *l;
-	ECal *default_client;
+	ECalClient *default_client;
 
 	g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);
 
@@ -1975,7 +1972,7 @@ e_cal_model_get_client_list (ECalModel *model)
  * @model: A calendar model.
  * @uri: Uri for the client to get.
  */
-ECal *
+ECalClient *
 e_cal_model_get_client_for_uri (ECalModel *model, const gchar *uri)
 {
 	GList *l;
@@ -1986,7 +1983,7 @@ e_cal_model_get_client_for_uri (ECalModel *model, const gchar *uri)
 	for (l = model->priv->clients; l != NULL; l = l->next) {
 		ECalModelClient *client_data = (ECalModelClient *) l->data;
 
-		if (!strcmp (uri, e_cal_get_uri (client_data->client)))
+		if (!strcmp (uri, e_client_get_uri (E_CLIENT (client_data->client))))
 			return client_data->client;
 	}
 
@@ -1994,7 +1991,7 @@ e_cal_model_get_client_for_uri (ECalModel *model, const gchar *uri)
 }
 
 static ECalModelClient *
-find_client_data (ECalModel *model, ECal *client)
+find_client_data (ECalModel *model, ECalClient *client)
 {
 	ECalModelPrivate *priv;
 	GList *l;
@@ -2012,7 +2009,7 @@ find_client_data (ECalModel *model, ECal *client)
 }
 
 static ECalModelComponent *
-search_by_id_and_client (ECalModelPrivate *priv, ECal *client, const ECalComponentId *id)
+search_by_id_and_client (ECalModelPrivate *priv, ECalClient *client, const ECalComponentId *id)
 {
 	gint i;
 
@@ -2051,8 +2048,8 @@ search_by_id_and_client (ECalModelPrivate *priv, ECal *client, const ECalCompone
 }
 
 typedef struct {
-	ECal *client;
-	ECalView *query;
+	ECalClient *client;
+	ECalClientView *view;
 	ECalModel *model;
 	icalcomponent *icalcomp;
 } RecurrenceExpansionData;
@@ -2075,7 +2072,8 @@ add_instance_cb (ECalComponent *comp, time_t instance_start, time_t instance_end
 
 	/* set the right instance start date to component */
 	e_cal_component_get_dtstart (comp, &datetime);
-	e_cal_get_timezone (rdata->client, datetime.tzid, &zone, NULL);
+	if (datetime.tzid)
+		e_cal_client_get_timezone_sync (rdata->client, datetime.tzid, &zone, NULL, NULL);
 	time = icaltime_from_timet_with_zone (instance_start, FALSE, zone ? zone : priv->zone);
 	to_set.value = &time;
 	to_set.tzid = datetime.tzid;
@@ -2084,7 +2082,9 @@ add_instance_cb (ECalComponent *comp, time_t instance_start, time_t instance_end
 
 	/* set the right instance end date to component*/
 	e_cal_component_get_dtend (comp, &datetime);
-	e_cal_get_timezone (rdata->client, datetime.tzid, &zone, NULL);
+	zone = NULL;
+	if (datetime.tzid)
+		e_cal_client_get_timezone_sync (rdata->client, datetime.tzid, &zone, NULL, NULL);
 	time = icaltime_from_timet_with_zone (instance_end, FALSE, zone ? zone : priv->zone);
 	to_set.value = &time;
 	to_set.tzid = datetime.tzid;
@@ -2162,24 +2162,25 @@ place_master_object_first_cb (gconstpointer p1, gconstpointer p2)
 	return res;
 }
 
-static void e_cal_view_objects_added_cb (ECalView *query, GList *objects, ECalModel *model);
+static void client_view_objects_added_cb (ECalClientView *view, const GSList *objects, ECalModel *model);
 
 static void
-process_added (ECalView *query, GList *objects, ECalModel *model)
+process_added (ECalClientView *view, const GSList *objects, ECalModel *model)
 {
 	ECalModelPrivate *priv;
-	GList *l, *copy;
+	const GSList *l;
+	GSList *copy;
 
 	priv = model->priv;
 
 	/* order matters, process master object first, then detached instances */
-	copy = g_list_sort (g_list_copy (objects), place_master_object_first_cb);
+	copy = g_slist_sort (g_slist_copy ((GSList *) objects), place_master_object_first_cb);
 
 	for (l = copy; l; l = l->next) {
 		ECalModelComponent *comp_data;
 		ECalComponentId *id;
 		ECalComponent *comp = e_cal_component_new ();
-		ECal *client = e_cal_view_get_client (query);
+		ECalClient *client = e_cal_client_view_get_client (view);
 
 		/* This will fail for alarm or VCalendar component */
 		if (!e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (l->data))) {
@@ -2217,19 +2218,17 @@ process_added (ECalView *query, GList *objects, ECalModel *model)
 		if (e_cal_util_component_has_recurrences (l->data) && (priv->flags & E_CAL_MODEL_FLAGS_EXPAND_RECURRENCES)) {
 			RecurrenceExpansionData rdata;
 
-			rdata.client = e_cal_view_get_client (query);
-			rdata.query = query;
+			rdata.client = client;
+			rdata.view = view;
 			rdata.model = model;
 			rdata.icalcomp = l->data;
-			e_cal_generate_instances_for_object (rdata.client, l->data,
-							     priv->start, priv->end,
-							     (ECalRecurInstanceFn) add_instance_cb,
-							     &rdata);
+			e_cal_client_generate_instances_for_object (rdata.client, l->data, priv->start, priv->end,
+								    (ECalRecurInstanceFn) add_instance_cb, &rdata);
 		} else {
 			e_table_model_pre_change (E_TABLE_MODEL (model));
 
 			comp_data = g_object_new (E_TYPE_CAL_MODEL_COMPONENT, NULL);
-			comp_data->client = g_object_ref (e_cal_view_get_client (query));
+			comp_data->client = g_object_ref (client);
 			comp_data->icalcomp = icalcomponent_new_clone (l->data);
 			e_cal_model_set_instance_times (comp_data, priv->zone);
 
@@ -2238,27 +2237,28 @@ process_added (ECalView *query, GList *objects, ECalModel *model)
 		}
 	}
 
-	g_list_free (copy);
+	g_slist_free (copy);
 }
 
 static void
-process_modified (ECalView *query, GList *objects, ECalModel *model)
+process_modified (ECalClientView *view, const GSList *objects, ECalModel *model)
 {
 	ECalModelPrivate *priv;
-	GList *l, *list = NULL;
+	const GSList *l;
+	GSList *list = NULL;
 
 	priv = model->priv;
 
 	/*  re-add only the recurrence objects */
-	for (l = objects; l != NULL; l = g_list_next (l)) {
+	for (l = objects; l != NULL; l = g_slist_next (l)) {
 		if (!e_cal_util_component_is_instance (l->data) && e_cal_util_component_has_recurrences (l->data) && (priv->flags & E_CAL_MODEL_FLAGS_EXPAND_RECURRENCES))
-			list = g_list_prepend (list, l->data);
+			list = g_slist_prepend (list, l->data);
 		else {
 			gint pos;
 			ECalModelComponent *comp_data;
 			ECalComponentId *id;
 			ECalComponent *comp = e_cal_component_new ();
-			ECal *client = e_cal_view_get_client (query);
+			ECalClient *client = e_cal_client_view_get_client (view);
 
 			if (!e_cal_component_set_icalcomponent (comp, icalcomponent_new_clone (l->data))) {
 				g_object_unref (comp);
@@ -2319,15 +2319,15 @@ process_modified (ECalView *query, GList *objects, ECalModel *model)
 		}
 	}
 
-	e_cal_view_objects_added_cb (query, list, model);
-	g_list_free (list);
+	client_view_objects_added_cb (view, list, model);
+	g_slist_free (list);
 }
 
 static void
-process_removed (ECalView *query, GList *ids, ECalModel *model)
+process_removed (ECalClientView *view, const GSList *ids, ECalModel *model)
 {
 	ECalModelPrivate *priv;
-	GList *l;
+	const GSList *l;
 
 	priv = model->priv;
 
@@ -2337,7 +2337,7 @@ process_removed (ECalView *query, GList *ids, ECalModel *model)
 		gint pos;
 
 		/* make sure we remove all objects with this UID */
-		while ((comp_data = search_by_id_and_client (priv, e_cal_view_get_client (query), id))) {
+		while ((comp_data = search_by_id_and_client (priv, e_cal_client_view_get_client (view), id))) {
 			GSList *l = NULL;
 
 			pos = get_position_in_array (priv->objects, comp_data);
@@ -2387,19 +2387,19 @@ free_comp_id (gpointer id)
 }
 
 static void
-process_event (ECalView *query, GList *objects, ECalModel *model,
-	void (*process_fn) (ECalView *query, GList *objects, ECalModel *model),
-	gboolean *in, GList **save_list, gpointer (*copy_fn) (gpointer data), void (*free_fn)(gpointer data))
+process_event (ECalClientView *view, const GSList *objects, ECalModel *model,
+	void (*process_fn) (ECalClientView *view, const GSList *objects, ECalModel *model),
+	gboolean *in, GSList **save_list, gpointer (*copy_fn) (gpointer data), void (*free_fn)(gpointer data))
 {
 	gboolean skip = FALSE;
-	GList *l;
+	const GSList *l;
 
 	g_mutex_lock (model->priv->notify_lock);
 	if (*in) {
 		skip = TRUE;
 		for (l = objects; l; l = l->next) {
 			if (l->data)
-				*save_list = g_list_append (*save_list, copy_fn (l->data));
+				*save_list = g_slist_append (*save_list, copy_fn (l->data));
 		}
 	} else {
 		*in = TRUE;
@@ -2411,23 +2411,23 @@ process_event (ECalView *query, GList *objects, ECalModel *model,
 		return;
 
 	/* do it */
-	process_fn (query, objects, model);
+	process_fn (view, objects, model);
 
 	g_mutex_lock (model->priv->notify_lock);
 	while (*save_list) {
-		GList *copy = *save_list;
+		GSList *copy = *save_list;
 		*save_list = NULL;
 		g_mutex_unlock (model->priv->notify_lock);
 
 		/* do it */
-		process_fn (query, copy, model);
+		process_fn (view, copy, model);
 
 		for (l = copy; l; l = l->next) {
 			if (l->data) {
 				free_fn (l->data);
 			}
 		}
-		g_list_free (copy);
+		g_slist_free (copy);
 
 		g_mutex_lock (model->priv->notify_lock);
 	}
@@ -2437,56 +2437,51 @@ process_event (ECalView *query, GList *objects, ECalModel *model,
 }
 
 static void
-e_cal_view_objects_added_cb (ECalView *query, GList *objects, ECalModel *model)
+client_view_objects_added_cb (ECalClientView *view, const GSList *objects, ECalModel *model)
 {
-	process_event (query, objects, model,
+	process_event (view, objects, model,
 		process_added, &model->priv->in_added, &model->priv->notify_added,
 		(gpointer (*)(gpointer)) icalcomponent_new_clone, (void (*)(gpointer)) icalcomponent_free);
 }
 
 static void
-e_cal_view_objects_modified_cb (ECalView *query, GList *objects, ECalModel *model)
+client_view_objects_modified_cb (ECalClientView *view, const GSList *objects, ECalModel *model)
 {
-	process_event (query, objects, model,
+	process_event (view, objects, model,
 		process_modified, &model->priv->in_modified, &model->priv->notify_modified,
 		(gpointer (*)(gpointer)) icalcomponent_new_clone, (void (*)(gpointer)) icalcomponent_free);
 }
 
 static void
-e_cal_view_objects_removed_cb (ECalView *query, GList *ids, ECalModel *model)
+client_view_objects_removed_cb (ECalClientView *view, const GSList *ids, ECalModel *model)
 {
-	process_event (query, ids, model,
+	process_event (view, ids, model,
 		process_removed, &model->priv->in_removed, &model->priv->notify_removed,
 		copy_comp_id, free_comp_id);
 }
 
 static void
-e_cal_view_progress_cb (ECalView *query, const gchar *message, gint percent, gpointer user_data)
+client_view_progress_cb (ECalClientView *view, gint percent, const gchar *message, gpointer user_data)
 {
 	ECalModel *model = (ECalModel *) user_data;
-	ECal *client = e_cal_view_get_client (query);
+	ECalClient *client = e_cal_client_view_get_client (view);
 
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
 	g_signal_emit (G_OBJECT (model), signals[CAL_VIEW_PROGRESS], 0, message,
-			percent, e_cal_get_source_type (client));
+			percent, e_cal_client_get_source_type (client));
 }
 
 static void
-e_cal_view_complete_cb (ECalView *query, ECalendarStatus status, const gchar *error_msg, gpointer user_data)
+client_view_complete_cb (ECalClientView *view, const GError *error, gpointer user_data)
 {
 	ECalModel *model = (ECalModel *) user_data;
-	ECal *client = e_cal_view_get_client (query);
+	ECalClient *client = e_cal_client_view_get_client (view);
 
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
-	#ifndef E_CAL_DISABLE_DEPRECATED
-	/* emit the signal on the model and let the view catch it to display */
-	g_signal_emit (G_OBJECT (model), signals[CAL_VIEW_DONE], 0, status,
-			e_cal_get_source_type (client));
-	#endif
-	g_signal_emit (G_OBJECT (model), signals[CAL_VIEW_COMPLETE], 0, status, error_msg,
-			e_cal_get_source_type (client));
+	g_signal_emit (G_OBJECT (model), signals[CAL_VIEW_COMPLETE], 0, error,
+			e_cal_client_get_source_type (client));
 }
 
 static void
@@ -2499,27 +2494,27 @@ update_e_cal_view_for_client (ECalModel *model, ECalModelClient *client_data)
 	priv = model->priv;
 
 	/* Skip if this client has not finished loading yet */
-	if (e_cal_get_load_state (client_data->client) != E_CAL_LOAD_LOADED)
+	if (!e_client_is_opened (E_CLIENT (client_data->client)))
 		return;
 
-	/* free the previous query, if any */
-	if (client_data->query) {
-		g_signal_handlers_disconnect_matched (client_data->query, G_SIGNAL_MATCH_DATA,
+	/* free the previous view, if any */
+	if (client_data->view) {
+		g_signal_handlers_disconnect_matched (client_data->view, G_SIGNAL_MATCH_DATA,
 						      0, 0, NULL, NULL, model);
-		g_object_unref (client_data->query);
-		client_data->query = NULL;
+		g_object_unref (client_data->view);
+		client_data->view = NULL;
 	}
 
-	/* prepare the query */
+	/* prepare the view */
 	g_return_if_fail (priv->full_sexp != NULL);
 
 	/* Don't create the new query if we won't use it */
 	if (!client_data->do_query)
 		return;
 
-try_again:
-	if (!e_cal_get_query (client_data->client, priv->full_sexp, &client_data->query, &error)) {
-		if (error->code == E_CALENDAR_STATUS_BUSY && tries != 10) {
+ try_again:
+	if (!e_cal_client_get_view_sync (client_data->client, priv->full_sexp, &client_data->view, NULL, &error)) {
+		if (g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_BUSY) && tries != 10) {
 			tries++;
 			/*TODO chose an optimal value */
 			g_usleep (500);
@@ -2527,18 +2522,24 @@ try_again:
 			goto try_again;
 		}
 
-		g_warning (G_STRLOC ": Unable to get query, %s", error->message);
+		g_warning (G_STRLOC ": Unable to get query, %s", error ? error->message : "Unknown error");
+		if (error)
+			g_error_free (error);
 
 		return;
 	}
 
-	g_signal_connect (client_data->query, "objects_added", G_CALLBACK (e_cal_view_objects_added_cb), model);
-	g_signal_connect (client_data->query, "objects_modified", G_CALLBACK (e_cal_view_objects_modified_cb), model);
-	g_signal_connect (client_data->query, "objects_removed", G_CALLBACK (e_cal_view_objects_removed_cb), model);
-	g_signal_connect (client_data->query, "view_progress", G_CALLBACK (e_cal_view_progress_cb), model);
-	g_signal_connect (client_data->query, "view_complete", G_CALLBACK (e_cal_view_complete_cb), model);
+	g_signal_connect (client_data->view, "objects-added", G_CALLBACK (client_view_objects_added_cb), model);
+	g_signal_connect (client_data->view, "objects-modified", G_CALLBACK (client_view_objects_modified_cb), model);
+	g_signal_connect (client_data->view, "objects-removed", G_CALLBACK (client_view_objects_removed_cb), model);
+	g_signal_connect (client_data->view, "progress", G_CALLBACK (client_view_progress_cb), model);
+	g_signal_connect (client_data->view, "complete", G_CALLBACK (client_view_complete_cb), model);
 
-	e_cal_view_start (client_data->query);
+	e_cal_client_view_start (client_data->view, &error);
+	if (error) {
+		g_debug ("%s: Failed to start view: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
 }
 
 void
@@ -2550,7 +2551,7 @@ e_cal_model_update_status_message (ECalModel *model, const gchar *message, gdoub
 }
 
 static void
-backend_died_cb (ECal *client, gpointer user_data)
+backend_died_cb (ECalClient *client, gpointer user_data)
 {
 	ECalModel *model;
 
@@ -2559,35 +2560,20 @@ backend_died_cb (ECal *client, gpointer user_data)
 	e_cal_model_remove_client (model, client);
 }
 
-static gboolean
-wait_open_cb (gpointer data)
-{
-	ECal *client = data;
-
-	g_return_val_if_fail (client != NULL, FALSE);
-	g_return_val_if_fail (E_IS_CAL (client), FALSE);
-
-	e_cal_open_async (client, FALSE);
-
-	return FALSE;
-}
-
 static void
-cal_opened_cb (ECal *client, const GError *error, gpointer user_data)
+client_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
 {
+	ECalClient *client = E_CAL_CLIENT (source_object);
 	ECalModel *model = (ECalModel *) user_data;
 	ECalModelClient *client_data;
+	GError *error = NULL;
 
-	if (g_error_matches (error, E_CALENDAR_ERROR, E_CALENDAR_STATUS_BUSY)) {
-		g_timeout_add (250, wait_open_cb, client);
-		return;
-	}
-
-	/* Stop listening for this calendar to be opened */
-	g_signal_handlers_disconnect_matched (client, G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA, 0, 0, NULL, cal_opened_cb, model);
+	e_client_open_finish (E_CLIENT (client), result, &error);
 
 	if (error) {
 		e_cal_model_remove_client (model, client);
+		g_debug ("%s: Failed to open '%s': %s", G_STRFUNC, e_client_get_uri (E_CLIENT (client)), error->message);
+		g_error_free (error);
 		e_cal_model_update_status_message (model, NULL, -1.0);
 		return;
 	}
@@ -2601,7 +2587,7 @@ cal_opened_cb (ECal *client, const GError *error, gpointer user_data)
 }
 
 static ECalModelClient *
-add_new_client (ECalModel *model, ECal *client, gboolean do_query)
+add_new_client (ECalModel *model, ECalClient *client, gboolean do_query)
 {
 	ECalModelPrivate *priv;
 	ECalModelClient *client_data;
@@ -2626,7 +2612,7 @@ add_new_client (ECalModel *model, ECal *client, gboolean do_query)
 
 	client_data = g_new0 (ECalModelClient, 1);
 	client_data->client = g_object_ref (client);
-	client_data->query = NULL;
+	client_data->view = NULL;
 	client_data->do_query = do_query;
 
 	priv->clients = g_list_append (priv->clients, client_data);
@@ -2635,19 +2621,18 @@ add_new_client (ECalModel *model, ECal *client, gboolean do_query)
 			  G_CALLBACK (backend_died_cb), model);
 
  load:
-	if (e_cal_get_load_state (client) == E_CAL_LOAD_LOADED) {
+	if (e_client_is_opened (E_CLIENT (client))) {
 		update_e_cal_view_for_client (model, client_data);
 	} else {
 		gchar *msg;
 
-		msg = g_strdup_printf (_("Opening %s"), e_cal_get_uri (client));
+		msg = g_strdup_printf (_("Opening %s"), e_client_get_uri (E_CLIENT (client)));
 		e_cal_model_update_status_message (model, msg, -1.0);
 		g_free (msg);
 
-		e_cal_set_default_timezone (client, e_cal_model_get_timezone (model), NULL);
+		e_cal_client_set_default_timezone (client, e_cal_model_get_timezone (model));
 
-		g_signal_connect (client, "cal_opened_ex", G_CALLBACK (cal_opened_cb), model);
-		e_cal_open_async (client, TRUE);
+		e_client_open (E_CLIENT (client), TRUE, NULL, client_opened_cb, model);
 	}
 
 	return client_data;
@@ -2657,10 +2642,10 @@ add_new_client (ECalModel *model, ECal *client, gboolean do_query)
  * e_cal_model_add_client
  */
 void
-e_cal_model_add_client (ECalModel *model, ECal *client)
+e_cal_model_add_client (ECalModel *model, ECalClient *client)
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (E_IS_CAL_CLIENT (client));
 
 	add_new_client (model, client, TRUE);
 }
@@ -2701,8 +2686,8 @@ remove_client (ECalModel *model, ECalModelClient *client_data)
 {
 	/* FIXME We might not want to disconnect the open signal for the default client */
 	g_signal_handlers_disconnect_matched (client_data->client, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, model);
-	if (client_data->query)
-		g_signal_handlers_disconnect_matched (client_data->query, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, model);
+	if (client_data->view)
+		g_signal_handlers_disconnect_matched (client_data->view, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, model);
 
 	remove_client_objects (model, client_data);
 
@@ -2722,8 +2707,8 @@ remove_client (ECalModel *model, ECalModelClient *client_data)
 
 	/* free all remaining memory */
 	g_object_unref (client_data->client);
-	if (client_data->query)
-		g_object_unref (client_data->query);
+	if (client_data->view)
+		g_object_unref (client_data->view);
 	g_free (client_data);
 }
 
@@ -2731,12 +2716,12 @@ remove_client (ECalModel *model, ECalModelClient *client_data)
  * e_cal_model_remove_client
  */
 void
-e_cal_model_remove_client (ECalModel *model, ECal *client)
+e_cal_model_remove_client (ECalModel *model, ECalClient *client)
 {
 	ECalModelClient *client_data;
 
 	g_return_if_fail (E_IS_CAL_MODEL (model));
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (E_IS_CAL_CLIENT (client));
 
 	client_data = find_client_data (model, client);
 	if (client_data)
@@ -2876,7 +2861,7 @@ redo_queries (ECalModel *model)
 
 	e_flag_free (data.eflag);
 
-	/* update the query for all clients */
+	/* update the view for all clients */
 	for (l = priv->clients; l != NULL; l = l->next) {
 		ECalModelClient *client_data;
 
@@ -3002,7 +2987,7 @@ e_cal_model_create_component_with_defaults (ECalModel *model, gboolean all_day)
 	ECalModelPrivate *priv;
 	ECalComponent *comp;
 	icalcomponent *icalcomp;
-	ECal *client;
+	ECalClient *client;
 
 	g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);
 
@@ -3302,7 +3287,7 @@ e_cal_model_generate_instances (ECalModel *model, time_t start, time_t end,
 		mdata.cb_data = cb_data;
 
 		if (comp_data->instance_start < end && comp_data->instance_end > start)
-			e_cal_generate_instances_for_object (comp_data->client, comp_data->icalcomp, start, end, cb, &mdata);
+			e_cal_client_generate_instances_for_object (comp_data->client, comp_data->icalcomp, start, end, cb, &mdata);
 	}
 }
 
@@ -3361,7 +3346,8 @@ e_cal_model_set_instance_times (ECalModelComponent *comp_data, const icaltimezon
 				icaltimezone *st_zone = NULL;
 
 				tzid = icalparameter_get_tzid (param);
-				e_cal_get_timezone (comp_data->client, tzid, &st_zone, NULL);
+				if (tzid)
+					e_cal_client_get_timezone_sync (comp_data->client, tzid, &st_zone, NULL, NULL);
 
 				if (st_zone)
 					zone = st_zone;
@@ -3385,7 +3371,8 @@ e_cal_model_set_instance_times (ECalModelComponent *comp_data, const icaltimezon
 				icaltimezone *end_zone = NULL;
 
 				tzid = icalparameter_get_tzid (param);
-				e_cal_get_timezone (comp_data->client, tzid, &end_zone, NULL);
+				if (tzid)
+					e_cal_client_get_timezone_sync (comp_data->client, tzid, &end_zone, NULL, NULL);
 
 				if (end_zone)
 					zone = end_zone;
diff --git a/calendar/gui/e-cal-model.h b/calendar/gui/e-cal-model.h
index db744d3d32..766fd6286f 100644
--- a/calendar/gui/e-cal-model.h
+++ b/calendar/gui/e-cal-model.h
@@ -28,7 +28,7 @@
 
 #include <e-util/e-util-enums.h>
 #include <table/e-table-model.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include "e-cell-date-edit-text.h"
 
 /* Standard GObject macros */
@@ -105,7 +105,7 @@ typedef struct _ECalModelComponentPrivate ECalModelComponentPrivate;
 struct _ECalModelComponent {
 	GObject object;
 
-	ECal *client;
+	ECalClient *client;
 	icalcomponent *icalcomp;
 	time_t instance_start;
 	time_t instance_end;
@@ -160,16 +160,10 @@ struct _ECalModelClass {
 	void		(*cal_view_progress)	(ECalModel *model,
 						 const gchar *message,
 						 gint progress,
-						 ECalSourceType type);
-	#ifndef E_CAL_DISABLE_DEPRECATED
-	void		(*cal_view_done)	(ECalModel *model,
-						 ECalendarStatus status,
-						 ECalSourceType type);
-	#endif
+						 ECalClientSourceType type);
 	void		(*cal_view_complete)	(ECalModel *model,
-						 ECalendarStatus status,
-						 const gchar *error_msg,
-						 ECalSourceType type);
+						 const GError *error,
+						 ECalClientSourceType type);
 	void		(*status_message)	(ECalModel *model,
 						 const gchar *message,
 						 gdouble percent);
@@ -246,16 +240,16 @@ gint		e_cal_model_get_work_day_start_minute
 void		e_cal_model_set_work_day_start_minute
 						(ECalModel *model,
 						 gint work_day_start_minute);
-ECal *		e_cal_model_get_default_client	(ECalModel *model);
+ECalClient *	e_cal_model_get_default_client	(ECalModel *model);
 void		e_cal_model_set_default_client	(ECalModel *model,
-						 ECal *client);
+						 ECalClient *client);
 GList *		e_cal_model_get_client_list	(ECalModel *model);
-ECal *		e_cal_model_get_client_for_uri	(ECalModel *model,
+ECalClient *	e_cal_model_get_client_for_uri	(ECalModel *model,
 						 const gchar *uri);
 void		e_cal_model_add_client		(ECalModel *model,
-						 ECal *client);
+						 ECalClient *cal_client);
 void		e_cal_model_remove_client	(ECalModel *model,
-						 ECal *client);
+						 ECalClient *cal_client);
 void		e_cal_model_remove_all_clients	(ECalModel *model);
 void		e_cal_model_get_time_range	(ECalModel *model,
 						 time_t *start,
diff --git a/calendar/gui/e-calendar-selector.c b/calendar/gui/e-calendar-selector.c
index 86d42aedb1..d31578cbd0 100644
--- a/calendar/gui/e-calendar-selector.c
+++ b/calendar/gui/e-calendar-selector.c
@@ -24,9 +24,9 @@
 
 #include "e-calendar-selector.h"
 
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
+#include <libedataserverui/e-client-utils.h>
 #include "e-util/e-selection.h"
-#include "common/authentication.h"
 
 struct _ECalendarSelectorPrivate {
 	gint dummy_value;
@@ -35,7 +35,7 @@ struct _ECalendarSelectorPrivate {
 static gpointer parent_class;
 
 static gboolean
-calendar_selector_update_single_object (ECal *client,
+calendar_selector_update_single_object (ECalClient *client,
                                         icalcomponent *icalcomp)
 {
 	gchar *uid;
@@ -43,15 +43,23 @@ calendar_selector_update_single_object (ECal *client,
 
 	uid = (gchar *) icalcomponent_get_uid (icalcomp);
 
-	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
-		return e_cal_modify_object (
-			client, icalcomp, CALOBJ_MOD_ALL, NULL);
+	if (e_cal_client_get_object_sync (client, uid, NULL, &tmp_icalcomp, NULL, NULL))
+		return e_cal_client_modify_object_sync (
+			client, icalcomp, CALOBJ_MOD_ALL, NULL, NULL);
 
-	return e_cal_create_object (client, icalcomp, &uid, NULL);
+	uid = NULL;
+	if (!e_cal_client_create_object_sync (client, icalcomp, &uid, NULL, NULL))
+		return FALSE;
+
+	if (uid)
+		icalcomponent_set_uid (icalcomp, uid);
+	g_free (uid);
+
+	return TRUE;
 }
 
 static gboolean
-calendar_selector_update_objects (ECal *client,
+calendar_selector_update_objects (ECalClient *client,
                                   icalcomponent *icalcomp)
 {
 	icalcomponent *subcomp;
@@ -72,14 +80,19 @@ calendar_selector_update_objects (ECal *client,
 		kind = icalcomponent_isa (subcomp);
 		if (kind == ICAL_VTIMEZONE_COMPONENT) {
 			icaltimezone *zone;
+			GError *error = NULL;
 
 			zone = icaltimezone_new ();
 			icaltimezone_set_component (zone, subcomp);
 
-			success = e_cal_add_timezone (client, zone, NULL);
+			success = e_cal_client_add_timezone_sync (client, zone, NULL, &error);
 			icaltimezone_free (zone, 1);
-			if (!success)
+			if (!success) {
+				g_debug ("%s: Failed to ass timezone: %s", G_STRFUNC, error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
 				return FALSE;
+			}
 		} else if (kind == ICAL_VTODO_COMPONENT ||
 			kind == ICAL_VEVENT_COMPONENT) {
 			success = calendar_selector_update_single_object (
@@ -95,6 +108,31 @@ calendar_selector_update_objects (ECal *client,
 	return TRUE;
 }
 
+static void
+client_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	EClient *client = NULL;
+	icalcomponent *icalcomp = user_data;
+	GError *error = NULL;
+
+	g_return_if_fail (icalcomp != NULL);
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
+
+	if (client) {
+		calendar_selector_update_objects (E_CAL_CLIENT (client), icalcomp);
+		g_object_unref (client);
+	}
+
+	if (error) {
+		g_debug ("%s: Failed to open client: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
+
+	icalcomponent_free (icalcomp);
+}
+
 static gboolean
 calendar_selector_data_dropped (ESourceSelector *selector,
                                 GtkSelectionData *selection_data,
@@ -103,7 +141,6 @@ calendar_selector_data_dropped (ESourceSelector *selector,
                                 guint info)
 {
 	GtkTreePath *path = NULL;
-	ECal *client;
 	icalcomponent *icalcomp;
 	const guchar *data;
 	gboolean success = FALSE;
@@ -123,17 +160,9 @@ calendar_selector_data_dropped (ESourceSelector *selector,
 		icalcomponent_set_uid (icalcomp, uid);
 	}
 
-	client = e_auth_new_cal_from_source (
-		destination, E_CAL_SOURCE_TYPE_EVENT);
-
-	if (client != NULL) {
-		if (e_cal_open (client, TRUE, NULL))
-			calendar_selector_update_objects (client, icalcomp);
-
-		g_object_unref (client);
-	}
-
-	icalcomponent_free (icalcomp);
+	e_client_utils_open_new (destination, E_CLIENT_SOURCE_TYPE_EVENTS, FALSE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_cb, icalcomp);
 
 	success = TRUE;
 
diff --git a/calendar/gui/e-calendar-view.c b/calendar/gui/e-calendar-view.c
index 34f6eae6b0..32c5301fe1 100644
--- a/calendar/gui/e-calendar-view.c
+++ b/calendar/gui/e-calendar-view.c
@@ -31,6 +31,7 @@
 #include <glib/gstdio.h>
 #include <gdk/gdkkeysyms.h>
 #include <libedataserver/e-time-utils.h>
+#include <libedataserverui/e-client-utils.h>
 #include <e-util/e-util.h>
 #include <e-util/e-alert-dialog.h>
 #include <e-util/e-extensible.h>
@@ -43,7 +44,6 @@
 #include <misc/e-selectable.h>
 #include <shell/e-shell.h>
 
-#include "common/authentication.h"
 #include "comp-util.h"
 #include "ea-calendar.h"
 #include "e-cal-model-calendar.h"
@@ -132,7 +132,7 @@ calendar_view_add_retract_data (ECalComponent *comp,
 
 static gboolean
 calendar_view_check_for_retract (ECalComponent *comp,
-                                 ECal *client)
+                                 ECalClient *client)
 {
 	ECalComponentOrganizer organizer;
 	const gchar *strip;
@@ -142,14 +142,14 @@ calendar_view_check_for_retract (ECalComponent *comp,
 	if (!e_cal_component_has_attendees (comp))
 		return FALSE;
 
-	if (!e_cal_get_save_schedules (client))
+	if (!e_cal_client_check_save_schedules (client))
 		return FALSE;
 
 	e_cal_component_get_organizer (comp, &organizer);
 	strip = itip_strip_mailto (organizer.value);
 
 	ret_val =
-		e_cal_get_cal_address (client, &email, NULL) &&
+		e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &email, NULL, NULL) &&
 		(g_ascii_strcasecmp (email, strip) == 0);
 
 	g_free (email);
@@ -177,7 +177,7 @@ calendar_view_delete_event (ECalendarView *cal_view,
 	vtype = e_cal_component_get_vtype (comp);
 
 	/*FIXME remove it once the we dont set the recurrence id for all the generated instances */
-	if (!e_cal_get_static_capability (event->comp_data->client, CAL_STATIC_CAPABILITY_RECURRENCES_NO_MASTER))
+	if (!e_cal_client_check_recurrences_no_master (event->comp_data->client))
 		e_cal_component_set_recurid (comp, NULL);
 
 	/*FIXME Retract should be moved to Groupwise features plugin */
@@ -187,15 +187,15 @@ calendar_view_delete_event (ECalendarView *cal_view,
 
 		delete = prompt_retract_dialog (comp, &retract_comment, GTK_WIDGET (cal_view), &retract);
 		if (retract) {
-			GList *users = NULL;
+			GSList *users = NULL;
 			icalcomponent *icalcomp = NULL, *mod_comp = NULL;
 
 			calendar_view_add_retract_data (
 				comp, retract_comment, CALOBJ_MOD_ALL);
 			icalcomp = e_cal_component_get_icalcomponent (comp);
 			icalcomponent_set_method (icalcomp, ICAL_METHOD_CANCEL);
-			if (!e_cal_send_objects (event->comp_data->client, icalcomp, &users,
-						&mod_comp, &error))	{
+			if (!e_cal_client_send_objects_sync (event->comp_data->client, icalcomp, &users,
+						&mod_comp, NULL, &error))	{
 				delete_error_dialog (error, E_CAL_COMPONENT_EVENT);
 				g_clear_error (&error);
 				error = NULL;
@@ -205,8 +205,8 @@ calendar_view_delete_event (ECalendarView *cal_view,
 					icalcomponent_free (mod_comp);
 
 				if (users) {
-					g_list_foreach (users, (GFunc) g_free, NULL);
-					g_list_free (users);
+					g_slist_foreach (users, (GFunc) g_free, NULL);
+					g_slist_free (users);
 				}
 			}
 		}
@@ -232,10 +232,10 @@ calendar_view_delete_event (ECalendarView *cal_view,
 		}
 		rid = e_cal_component_get_recurid_as_string (comp);
 		if (e_cal_util_component_is_instance (event->comp_data->icalcomp) || e_cal_util_component_has_recurrences (event->comp_data->icalcomp))
-			e_cal_remove_object_with_mod (event->comp_data->client, uid,
-				rid, CALOBJ_MOD_ALL, &error);
+			e_cal_client_remove_object_sync (event->comp_data->client, uid,
+				rid, CALOBJ_MOD_ALL, NULL, &error);
 		else
-			e_cal_remove_object (event->comp_data->client, uid, &error);
+			e_cal_client_remove_object_sync (event->comp_data->client, uid, NULL, CALOBJ_MOD_THIS, NULL, &error);
 
 		delete_error_dialog (error, E_CAL_COMPONENT_EVENT);
 		g_clear_error (&error);
@@ -392,9 +392,8 @@ calendar_view_update_actions (ESelectable *selectable,
 
 	for (iter = list; iter != NULL; iter = iter->next) {
 		ECalendarViewEvent *event = iter->data;
-		ECal *client;
+		ECalClient *client;
 		icalcomponent *icalcomp;
-		gboolean read_only;
 
 		if (event == NULL || event->comp_data == NULL)
 			continue;
@@ -402,8 +401,7 @@ calendar_view_update_actions (ESelectable *selectable,
 		client = event->comp_data->client;
 		icalcomp = event->comp_data->icalcomp;
 
-		e_cal_is_read_only (client, &read_only, NULL);
-		sources_are_editable &= !read_only;
+		sources_are_editable = sources_are_editable && !e_client_is_readonly (E_CLIENT (client));
 
 		recurring |=
 			e_cal_util_component_is_instance (icalcomp) ||
@@ -488,17 +486,14 @@ calendar_view_cut_clipboard (ESelectable *selectable)
 
 			/* when cutting detached instances, only cut that instance */
 			rid = e_cal_component_get_recurid_as_string (comp);
-			if (e_cal_get_object (event->comp_data->client, uid, rid, &icalcomp, NULL)) {
-				e_cal_remove_object_with_mod (event->comp_data->client, uid,
-							      rid, CALOBJ_MOD_THIS,
-							      &error);
+			if (e_cal_client_get_object_sync (event->comp_data->client, uid, rid, &icalcomp, NULL, NULL)) {
+				e_cal_client_remove_object_sync (event->comp_data->client, uid, rid, CALOBJ_MOD_THIS, NULL, &error);
 				icalcomponent_free (icalcomp);
 			} else
-				e_cal_remove_object_with_mod (event->comp_data->client, uid, NULL,
-						CALOBJ_MOD_ALL, &error);
+				e_cal_client_remove_object_sync (event->comp_data->client, uid, NULL, CALOBJ_MOD_ALL, NULL, &error);
 			g_free (rid);
 		} else
-			e_cal_remove_object (event->comp_data->client, uid, &error);
+			e_cal_client_remove_object_sync (event->comp_data->client, uid, NULL, CALOBJ_MOD_ALL, NULL, &error);
 		delete_error_dialog (error, E_CAL_COMPONENT_EVENT);
 
 		g_clear_error (&error);
@@ -514,7 +509,7 @@ calendar_view_cut_clipboard (ESelectable *selectable)
 }
 
 static void
-add_related_timezones (icalcomponent *des_icalcomp, icalcomponent *src_icalcomp, ECal *client)
+add_related_timezones (icalcomponent *des_icalcomp, icalcomponent *src_icalcomp, ECalClient *client)
 {
 	icalproperty_kind look_in[] = {
 		ICAL_DTSTART_PROPERTY,
@@ -540,7 +535,7 @@ add_related_timezones (icalcomponent *des_icalcomp, icalcomponent *src_icalcomp,
 					GError *error = NULL;
 					icaltimezone *zone = NULL;
 
-					if (!e_cal_get_timezone (client, tzid, &zone, &error)) {
+					if (!e_cal_client_get_timezone_sync (client, tzid, &zone, NULL, &error)) {
 						g_warning ("%s: Cannot get timezone for '%s'. %s", G_STRFUNC, tzid, error ? error->message : "");
 						if (error)
 							g_error_free (error);
@@ -628,7 +623,7 @@ clipboard_get_calendar_data (ECalendarView *cal_view,
 	icalcomponent_kind kind;
 	time_t selected_time_start, selected_time_end;
 	icaltimezone *default_zone;
-	ECal *client;
+	ECalClient *client;
 	gboolean in_top_canvas;
 
 	g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));
@@ -671,7 +666,7 @@ clipboard_get_calendar_data (ECalendarView *cal_view,
 
 			zone = icaltimezone_new ();
 			icaltimezone_set_component (zone, subcomp);
-			if (!e_cal_add_timezone (client, zone, &error)) {
+			if (!e_cal_client_add_timezone_sync (client, zone, NULL, &error)) {
 				icalproperty *tzidprop = icalcomponent_get_first_property (subcomp, ICAL_TZID_PROPERTY);
 
 				g_warning ("%s: Add zone '%s' failed. %s", G_STRFUNC, tzidprop ? icalproperty_get_tzid (tzidprop) : "???", error ? error->message : "");
@@ -949,7 +944,7 @@ e_calendar_view_popup_event (ECalendarView *calendar_view,
 }
 
 void
-e_calendar_view_add_event (ECalendarView *cal_view, ECal *client, time_t dtstart,
+e_calendar_view_add_event (ECalendarView *cal_view, ECalClient *client, time_t dtstart,
 		      icaltimezone *default_zone, icalcomponent *icalcomp, gboolean in_top_canvas)
 {
 	ECalComponent *comp;
@@ -1049,7 +1044,7 @@ e_calendar_view_add_event (ECalendarView *cal_view, ECal *client, time_t dtstart
 	e_cal_component_commit_sequence (comp);
 
 	uid = NULL;
-	if (e_cal_create_object (client, e_cal_component_get_icalcomponent (comp), &uid, &error)) {
+	if (e_cal_client_create_object_sync (client, e_cal_component_get_icalcomponent (comp), &uid, NULL, &error)) {
 		gboolean strip_alarms = TRUE;
 
 		if (uid) {
@@ -1284,15 +1279,15 @@ e_calendar_view_delete_selected_occurrence (ECalendarView *cal_view)
 
 		delete = prompt_retract_dialog (comp, &retract_comment, GTK_WIDGET (cal_view), &retract);
 		if (retract) {
-			GList *users = NULL;
+			GSList *users = NULL;
 			icalcomponent *icalcomp = NULL, *mod_comp = NULL;
 
 			calendar_view_add_retract_data (
 				comp, retract_comment, CALOBJ_MOD_THIS);
 			icalcomp = e_cal_component_get_icalcomponent (comp);
 			icalcomponent_set_method (icalcomp, ICAL_METHOD_CANCEL);
-			if (!e_cal_send_objects (event->comp_data->client, icalcomp, &users,
-						&mod_comp, &error))	{
+			if (!e_cal_client_send_objects_sync (event->comp_data->client, icalcomp, &users,
+						&mod_comp, NULL, &error))	{
 				delete_error_dialog (error, E_CAL_COMPONENT_EVENT);
 				g_clear_error (&error);
 				error = NULL;
@@ -1300,8 +1295,8 @@ e_calendar_view_delete_selected_occurrence (ECalendarView *cal_view)
 				if (mod_comp)
 					icalcomponent_free (mod_comp);
 				if (users) {
-					g_list_foreach (users, (GFunc) g_free, NULL);
-					g_list_free (users);
+					g_slist_foreach (users, (GFunc) g_free, NULL);
+					g_slist_free (users);
 				}
 			}
 		}
@@ -1323,7 +1318,7 @@ e_calendar_view_delete_selected_occurrence (ECalendarView *cal_view)
 		if (dt.tzid) {
 			GError *error = NULL;
 
-			e_cal_get_timezone (event->comp_data->client, dt.tzid, &zone, &error);
+			e_cal_client_get_timezone_sync (event->comp_data->client, dt.tzid, &zone, NULL, &error);
 			if (error) {
 				zone = e_calendar_view_get_timezone (cal_view);
 				g_clear_error (&error);
@@ -1339,7 +1334,7 @@ e_calendar_view_delete_selected_occurrence (ECalendarView *cal_view)
 		if ((itip_organizer_is_user (comp, event->comp_data->client) || itip_sentby_is_user (comp, event->comp_data->client))
 				&& cancel_component_dialog ((GtkWindow *) gtk_widget_get_toplevel (GTK_WIDGET (cal_view)),
 					event->comp_data->client,
-					comp, TRUE) && !e_cal_get_save_schedules (event->comp_data->client)) {
+					comp, TRUE) && !e_cal_client_check_save_schedules (event->comp_data->client)) {
 			if (!e_cal_component_is_instance (comp)) {
 				ECalComponentRange range;
 
@@ -1355,15 +1350,14 @@ e_calendar_view_delete_selected_occurrence (ECalendarView *cal_view)
 		}
 
 		if (is_instance)
-			e_cal_remove_object_with_mod (event->comp_data->client, uid, rid, CALOBJ_MOD_THIS, &error);
+			e_cal_client_remove_object_sync (event->comp_data->client, uid, rid, CALOBJ_MOD_THIS, NULL, &error);
 		else {
 			struct icaltimetype instance_rid;
 
 			instance_rid = icaltime_from_timet_with_zone (event->comp_data->instance_start,
 					TRUE, zone ? zone : icaltimezone_get_utc_timezone ());
 			e_cal_util_remove_instances (event->comp_data->icalcomp, instance_rid, CALOBJ_MOD_THIS);
-			e_cal_modify_object (event->comp_data->client, event->comp_data->icalcomp, CALOBJ_MOD_THIS,
-					&error);
+			e_cal_client_modify_object_sync (event->comp_data->client, event->comp_data->icalcomp, CALOBJ_MOD_THIS, NULL, &error);
 		}
 
 		delete_error_dialog (error, E_CAL_COMPONENT_EVENT);
@@ -1414,10 +1408,9 @@ e_calendar_view_new_appointment_for (ECalendarView *cal_view,
 	ECalComponent *comp;
 	icalcomponent *icalcomp;
 	ECalComponentTransparency transparency;
-	ECal *default_client = NULL;
+	ECalClient *default_client = NULL;
 	gpointer parent;
 	guint32 flags = 0;
-	gboolean readonly = FALSE;
 
 	g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));
 
@@ -1428,15 +1421,15 @@ e_calendar_view_new_appointment_for (ECalendarView *cal_view,
 
 	default_client = e_cal_model_get_default_client (priv->model);
 
-	if (!default_client || e_cal_get_load_state (default_client) != E_CAL_LOAD_LOADED) {
+	if (!default_client || !e_client_is_opened (E_CLIENT (default_client))) {
 		g_warning ("Default client not loaded \n");
 		return;
 	}
 
-	if (e_cal_is_read_only (default_client, &readonly, NULL) && readonly) {
+	if (e_client_is_readonly (E_CLIENT (default_client))) {
 		GtkWidget *widget;
 
-		widget = e_alert_dialog_new_for_args (parent, "calendar:prompt-read-only-cal", e_source_peek_name (e_cal_get_source (default_client)), NULL);
+		widget = e_alert_dialog_new_for_args (parent, "calendar:prompt-read-only-cal", e_source_peek_name (e_client_get_source (E_CLIENT (default_client))), NULL);
 
 		g_signal_connect ((GtkDialog *)widget, "response", G_CALLBACK (gtk_widget_destroy),
 				  widget);
@@ -1588,7 +1581,7 @@ object_created_cb (CompEditor *ce, ECalendarView *cal_view)
 }
 
 CompEditor *
-e_calendar_view_open_event_with_flags (ECalendarView *cal_view, ECal *client, icalcomponent *icalcomp, guint32 flags)
+e_calendar_view_open_event_with_flags (ECalendarView *cal_view, ECalClient *client, icalcomponent *icalcomp, guint32 flags)
 {
 	CompEditor *ce;
 	const gchar *uid;
@@ -1631,12 +1624,12 @@ e_calendar_view_open_event_with_flags (ECalendarView *cal_view, ECal *client, ic
  * object.
  */
 void
-e_calendar_view_edit_appointment (ECalendarView *cal_view, ECal *client, icalcomponent *icalcomp, EEditEventMode mode)
+e_calendar_view_edit_appointment (ECalendarView *cal_view, ECalClient *client, icalcomponent *icalcomp, EEditEventMode mode)
 {
 	guint32 flags = 0;
 
 	g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (E_IS_CAL_CLIENT (client));
 	g_return_if_fail (icalcomp != NULL);
 
 	if ((mode == EDIT_EVENT_AUTODETECT && icalcomponent_get_first_property (icalcomp, ICAL_ATTENDEE_PROPERTY) != NULL)
@@ -1654,15 +1647,17 @@ e_calendar_view_edit_appointment (ECalendarView *cal_view, ECal *client, icalcom
 
 void
 e_calendar_view_modify_and_send (ECalComponent *comp,
-				 ECal *client,
+				 ECalClient *client,
 				 CalObjModType mod,
 				 GtkWindow *toplevel,
 				 gboolean new)
 {
 	gboolean only_new_attendees = FALSE;
+	GError *error = NULL;
+
 	e_cal_component_commit_sequence (comp);
 
-	if (e_cal_modify_object (client, e_cal_component_get_icalcomponent (comp), mod, NULL)) {
+	if (e_cal_client_modify_object_sync (client, e_cal_component_get_icalcomponent (comp), mod, NULL, &error)) {
 		gboolean strip_alarms = TRUE;
 
 		if ((itip_organizer_is_user (comp, client) || itip_sentby_is_user (comp, client)) &&
@@ -1675,7 +1670,7 @@ e_calendar_view_modify_and_send (ECalComponent *comp,
 				const gchar *uid = NULL;
 
 				e_cal_component_get_uid (comp, &uid);
-				if (e_cal_get_object (client, uid, NULL, &icalcomp, NULL) && icalcomp) {
+				if (e_cal_client_get_object_sync (client, uid, NULL, &icalcomp, NULL, NULL) && icalcomp) {
 					send_comp = e_cal_component_new ();
 					if (!e_cal_component_set_icalcomponent (send_comp, icalcomp)) {
 						icalcomponent_free (icalcomp);
@@ -1694,7 +1689,10 @@ e_calendar_view_modify_and_send (ECalComponent *comp,
 				g_object_unref (send_comp);
 		}
 	} else {
-		g_message (G_STRLOC ": Could not update the object!");
+		g_message (G_STRLOC ": Could not update the object! %s", error ? error->message : "Unknown error");
+
+		if (error)
+			g_error_free (error);
 	}
 }
 
@@ -1770,7 +1768,7 @@ e_calendar_view_move_tip (GtkWidget *widget, gint x, gint y)
  * Free returned pointer with g_free.
  **/
 gchar *
-e_calendar_view_get_attendees_status_info (ECalComponent *comp, ECal *client)
+e_calendar_view_get_attendees_status_info (ECalComponent *comp, ECalClient *client)
 {
 	struct _values {
 		icalparameter_partstat status;
@@ -1867,7 +1865,7 @@ e_calendar_view_get_tooltips (const ECalendarViewEventData *data)
 	GdkWindow *window;
 	ECalComponent *newcomp = e_cal_component_new ();
 	icaltimezone *zone, *default_zone;
-	ECal *client = NULL;
+	ECalClient *client = NULL;
 	gboolean free_text = FALSE;
 
 	/* Delete any stray tooltip if left */
@@ -1961,7 +1959,7 @@ e_calendar_view_get_tooltips (const ECalendarViewEventData *data)
 	if (dtstart.tzid) {
 		zone = icalcomponent_get_timezone (e_cal_component_get_icalcomponent (newcomp), dtstart.tzid);
 		if (!zone)
-			e_cal_get_timezone (client, dtstart.tzid, &zone, NULL);
+			e_cal_client_get_timezone_sync (client, dtstart.tzid, &zone, NULL, NULL);
 
 		if (!zone)
 			zone = default_zone;
@@ -2067,7 +2065,7 @@ icalcomp_contains_category (icalcomponent *icalcomp, const gchar *category)
  */
 
 const gchar *
-e_calendar_view_get_icalcomponent_summary (ECal *ecal, icalcomponent *icalcomp, gboolean *free_text)
+e_calendar_view_get_icalcomponent_summary (ECalClient *client, icalcomponent *icalcomp, gboolean *free_text)
 {
 	const gchar *summary;
 
@@ -2081,11 +2079,11 @@ e_calendar_view_get_icalcomponent_summary (ECal *ecal, icalcomponent *icalcomp,
 		struct icaltimetype dtstart, dtnow;
 		icalcomponent *item_icalcomp = NULL;
 
-		if (e_cal_get_object (ecal,
+		if (e_cal_client_get_object_sync (client,
 				      icalcomponent_get_uid (icalcomp),
 				      icalcomponent_get_relcalid (icalcomp),
 				      &item_icalcomp,
-				      NULL)) {
+				      NULL, NULL)) {
 			dtstart = icalcomponent_get_dtstart (item_icalcomp);
 			dtnow = icalcomponent_get_dtstart (icalcomp);
 
diff --git a/calendar/gui/e-calendar-view.h b/calendar/gui/e-calendar-view.h
index 88ebbeea66..decfdfffbf 100644
--- a/calendar/gui/e-calendar-view.h
+++ b/calendar/gui/e-calendar-view.h
@@ -24,7 +24,7 @@
 #define E_CALENDAR_VIEW_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include "e-cal-model.h"
 #include "gnome-cal.h"
 #include "dialogs/comp-editor.h"
@@ -210,7 +210,7 @@ void		e_calendar_view_delete_selected_occurrence
 						(ECalendarView *cal_view);
 CompEditor *	e_calendar_view_open_event_with_flags
 						(ECalendarView *cal_view,
-						 ECal *client,
+						 ECalClient *client,
 						 icalcomponent *icalcomp,
 						 guint32 flags);
 
@@ -218,7 +218,7 @@ void		e_calendar_view_popup_event	(ECalendarView *cal_view,
 						 GdkEventButton *event);
 
 void		e_calendar_view_add_event	(ECalendarView *cal_view,
-						 ECal *client,
+						 ECalClient *client,
 						 time_t dtstart,
 						 icaltimezone *default_zone,
 						 icalcomponent *icalcomp,
@@ -236,12 +236,12 @@ void		e_calendar_view_new_appointment_full
 						 gboolean no_past_date);
 void		e_calendar_view_new_appointment	(ECalendarView *cal_view);
 void		e_calendar_view_edit_appointment (ECalendarView *cal_view,
-						 ECal *client,
+						 ECalClient *client,
 						 icalcomponent *icalcomp,
 						 EEditEventMode mode);
 void		e_calendar_view_open_event	(ECalendarView *cal_view);
 void		e_calendar_view_modify_and_send	(ECalComponent *comp,
-						 ECal *client,
+						 ECalClient *client,
 						 CalObjModType mod,
 						 GtkWindow *toplevel,
 						 gboolean new);
@@ -253,12 +253,12 @@ void		e_calendar_view_move_tip	(GtkWidget *widget,
 						 gint y);
 
 const gchar *	e_calendar_view_get_icalcomponent_summary
-						(ECal *ecal,
+						(ECalClient *ecal,
 						 icalcomponent *icalcomp,
 						 gboolean *free_text);
 gchar *		e_calendar_view_get_attendees_status_info
 						(ECalComponent *comp,
-						 ECal *client);
+						 ECalClient *client);
 
 void		e_calendar_view_emit_user_created
 						(ECalendarView *cal_view);
diff --git a/calendar/gui/e-day-view.c b/calendar/gui/e-day-view.c
index 4aa87719fe..e7e44bab46 100644
--- a/calendar/gui/e-day-view.c
+++ b/calendar/gui/e-day-view.c
@@ -273,7 +273,7 @@ static ECalendarViewPosition e_day_view_convert_position_in_main_canvas (EDayVie
 								    gint *row_return,
 								    gint *event_num_return);
 static gboolean e_day_view_find_event_from_uid (EDayView *day_view,
-						ECal *client,
+						ECalClient *client,
 						const gchar *uid,
 						const gchar *rid,
 						gint *day_return,
@@ -2137,7 +2137,7 @@ e_day_view_update_event_label (EDayView *day_view,
 			       "text", text,
 			       NULL);
 
-	if (e_cal_get_static_capability (event->comp_data->client, CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
+	if (e_client_check_capability (E_CLIENT (event->comp_data->client), CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
 				&& e_cal_util_component_has_attendee (event->comp_data->icalcomp))
 		set_text_as_bold (event);
 
@@ -2172,7 +2172,7 @@ e_day_view_update_long_event_label (EDayView *day_view,
 	if (free_text)
 		g_free ((gchar *) summary);
 
-	if (e_cal_get_static_capability (event->comp_data->client, CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
+	if (e_client_check_capability (E_CLIENT (event->comp_data->client), CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
 				&& e_cal_util_component_has_attendee (event->comp_data->icalcomp))
 		set_text_as_bold (event);
 }
@@ -2225,7 +2225,7 @@ e_day_view_find_event_from_item (EDayView *day_view,
    see if any events with the uid exist. */
 static gboolean
 e_day_view_find_event_from_uid (EDayView *day_view,
-				ECal *client,
+				ECalClient *client,
 				const gchar *uid,
 				const gchar *rid,
 				gint *day_return,
@@ -3475,9 +3475,7 @@ e_day_view_on_event_click (EDayView *day_view,
 	     !e_cal_util_component_has_recurrences (event->comp_data->icalcomp))
 	    && (pos == E_CALENDAR_VIEW_POS_TOP_EDGE
 		|| pos == E_CALENDAR_VIEW_POS_BOTTOM_EDGE)) {
-		gboolean read_only = FALSE;
-
-		if (event && (!event->is_editable || (e_cal_is_read_only (event->comp_data->client, &read_only, NULL) && read_only))) {
+		if (event && (!event->is_editable || e_client_is_readonly (E_CLIENT (event->comp_data->client)))) {
 			return;
 		}
 
@@ -3936,11 +3934,10 @@ e_day_view_on_main_canvas_motion (GtkWidget *widget,
 			gtk_target_list_unref (target_list);
 		}
 	} else {
-		gboolean read_only = FALSE;
 		cursor = day_view->normal_cursor;
 
 		/* Check if the event is editable and client is not readonly while changing the cursor */
-		if (event && event->is_editable && is_comp_data_valid (event) && e_cal_is_read_only (event->comp_data->client, &read_only, NULL) && !read_only) {
+		if (event && event->is_editable && is_comp_data_valid (event) && !e_client_is_readonly (E_CLIENT (event->comp_data->client))) {
 
 			switch (pos) {
 			case E_CALENDAR_VIEW_POS_LEFT_EDGE:
@@ -4119,7 +4116,6 @@ e_day_view_update_resize (EDayView *day_view,
 	EDayViewEvent *event;
 	gint day, event_num;
 	gboolean need_reshape = FALSE;
-	gboolean read_only = FALSE;
 
 #if 0
 	g_print ("Updating resize Row:%i\n", row);
@@ -4137,7 +4133,7 @@ e_day_view_update_resize (EDayView *day_view,
 	event = &g_array_index (day_view->events[day], EDayViewEvent,
 				event_num);
 
-	if (event && (!event->is_editable || !is_comp_data_valid (event) || (e_cal_is_read_only (event->comp_data->client, &read_only, NULL) && read_only))) {
+	if (event && (!event->is_editable || !is_comp_data_valid (event) || e_client_is_readonly (E_CLIENT (event->comp_data->client)))) {
 		return;
 	}
 
@@ -4175,7 +4171,7 @@ e_day_view_finish_long_event_resize (EDayView *day_view)
 	ECalComponentDateTime date;
 	struct icaltimetype itt;
 	time_t dt;
-	ECal *client;
+	ECalClient *client;
 	CalObjModType mod = CALOBJ_MOD_ALL;
 	GtkWindow *toplevel;
 	gint is_date;
@@ -4290,7 +4286,7 @@ e_day_view_finish_resize (EDayView *day_view)
 	ECalComponentDateTime date;
 	struct icaltimetype itt;
 	time_t dt;
-	ECal *client;
+	ECalClient *client;
 	CalObjModType mod = CALOBJ_MOD_ALL;
 	GtkWindow *toplevel;
 
@@ -5062,7 +5058,7 @@ static gboolean
 e_day_view_add_new_event_in_selected_range (EDayView *day_view, GdkEventKey *key_event)
 {
 	icalcomponent *icalcomp;
-	ECal *ecal;
+	ECalClient *client;
 	ECalModel *model;
 	ECalComponent *comp;
 	gint day, event_num;
@@ -5071,12 +5067,11 @@ e_day_view_add_new_event_in_selected_range (EDayView *day_view, GdkEventKey *key
 	struct icaltimetype start_tt, end_tt;
 	const gchar *uid;
 	AddEventData add_event_data;
-	gboolean read_only = TRUE;
 
 	/* Check if the client is read only */
 	model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
-	ecal = e_cal_model_get_default_client (model);
-	if (!e_cal_is_read_only (ecal, &read_only, NULL) || read_only)
+	client = e_cal_model_get_default_client (model);
+	if (e_client_is_readonly (E_CLIENT (client)))
 		return FALSE;
 
 	icalcomp = e_cal_model_create_component_with_defaults (model, day_view->selection_in_top_canvas);
@@ -5128,7 +5123,7 @@ e_day_view_add_new_event_in_selected_range (EDayView *day_view, GdkEventKey *key
 	gtk_widget_queue_draw (day_view->top_canvas);
 	gtk_widget_queue_draw (day_view->main_canvas);
 
-	if (!e_day_view_find_event_from_uid (day_view, ecal, uid, NULL, &day, &event_num)) {
+	if (!e_day_view_find_event_from_uid (day_view, client, uid, NULL, &day, &event_num)) {
 		g_warning ("Couldn't find event to start editing.\n");
 		g_object_unref (comp);
 		return FALSE;
@@ -5980,7 +5975,6 @@ e_day_view_start_editing_event (EDayView *day_view,
 	EDayViewEvent *event;
 	ETextEventProcessor *event_processor = NULL;
 	ETextEventProcessorCommand command;
-	gboolean read_only;
 
 #if 0
 	g_print ("In e_day_view_start_editing_event\n");
@@ -6008,7 +6002,7 @@ e_day_view_start_editing_event (EDayView *day_view,
 	if (!is_comp_data_valid (event))
 		return;
 
-	if (!e_cal_is_read_only (event->comp_data->client, &read_only, NULL) || read_only)
+	if (e_client_is_readonly (E_CLIENT (event->comp_data->client)))
 		return;
 
 	/* If the event is not shown, don't try to edit it. */
@@ -6416,7 +6410,7 @@ e_day_view_change_event_time (EDayView *day_view, time_t start_dt, time_t end_dt
 	ECalComponent *comp;
 	ECalComponentDateTime date;
 	struct icaltimetype itt;
-	ECal *client;
+	ECalClient *client;
 	CalObjModType mod = CALOBJ_MOD_ALL;
 	GtkWindow *toplevel;
 
@@ -6643,7 +6637,7 @@ e_day_view_on_editing_stopped (EDayView *day_view,
 	gchar *text = NULL;
 	ECalComponentText summary;
 	ECalComponent *comp;
-	ECal *client;
+	ECalClient *client;
 	gboolean on_server;
 
 	/* Note: the item we are passed here isn't reliable, so we just stop
@@ -6728,11 +6722,21 @@ e_day_view_on_editing_stopped (EDayView *day_view,
 		e_cal_component_commit_sequence (comp);
 
 		if (!on_server) {
-			if (!e_cal_create_object (client, icalcomp, NULL, NULL))
-				g_message (G_STRLOC ": Could not create the object!");
-			else
+			gchar *uid = NULL;
+			GError *error = NULL;
+
+			if (!e_cal_client_create_object_sync (client, icalcomp, &uid, NULL, &error)) {
+				uid = NULL;
+				g_debug (G_STRLOC ": Could not create the object! %s", error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
+			} else {
+				icalcomponent_set_uid (icalcomp, uid);
 				e_calendar_view_emit_user_created (
 					E_CALENDAR_VIEW (day_view));
+			}
+
+			g_free (uid);
 
 			/* we remove the object since we either got the update from the server or failed */
 			e_day_view_remove_event_cb (day_view, day, event_num, NULL);
@@ -7801,7 +7805,7 @@ e_day_view_on_drag_data_get (GtkWidget          *widget,
 
 	comp_str = icalcomponent_as_ical_string_r (vcal);
 	if (comp_str) {
-		ESource *source = e_cal_get_source (event->comp_data->client);
+		ESource *source = e_client_get_source (E_CLIENT (event->comp_data->client));
 		const gchar *source_uid = e_source_peek_uid (source);
 		GdkAtom target;
 		gchar *tmp;
@@ -7841,7 +7845,7 @@ e_day_view_on_top_canvas_drag_data_received  (GtkWidget          *widget,
 	struct icaltimetype itt;
 	time_t dt;
 	gboolean all_day_event;
-	ECal *client;
+	ECalClient *client;
 	ECalModel *model;
 	ECalendarView *cal_view;
 	gboolean drag_from_same_window;
@@ -8043,7 +8047,7 @@ e_day_view_on_top_canvas_drag_data_received  (GtkWidget          *widget,
 
 					zone = icaltimezone_new ();
 					icaltimezone_set_component (zone, subcomp);
-					e_cal_add_timezone (client, zone, NULL);
+					e_cal_client_add_timezone_sync (client, zone, NULL, NULL);
 
 					icaltimezone_free (zone, 1);
 				}
@@ -8087,7 +8091,7 @@ e_day_view_on_main_canvas_drag_data_received  (GtkWidget          *widget,
 	ECalComponentDateTime date;
 	struct icaltimetype itt;
 	time_t dt;
-	ECal *client;
+	ECalClient *client;
 	gboolean drag_from_same_window;
 	const guchar *data;
 	gint format, length;
@@ -8270,7 +8274,7 @@ e_day_view_on_main_canvas_drag_data_received  (GtkWidget          *widget,
 
 					zone = icaltimezone_new ();
 					icaltimezone_set_component (zone, subcomp);
-					e_cal_add_timezone (client, zone, NULL);
+					e_cal_client_add_timezone_sync (client, zone, NULL, NULL);
 
 					icaltimezone_free (zone, 1);
 				}
diff --git a/calendar/gui/e-day-view.h b/calendar/gui/e-day-view.h
index 8728b24283..ae1cf79d56 100644
--- a/calendar/gui/e-day-view.h
+++ b/calendar/gui/e-day-view.h
@@ -235,9 +235,6 @@ struct _EDayView {
 	/* label showing week number in upper-left corner */
 	GtkWidget *week_number_label;
 
-	/* S-expression for query and the query object */
-	ECalView *query;
-
 	/* The start and end of the days shown. */
 	time_t lower;
 	time_t upper;
diff --git a/calendar/gui/e-meeting-list-view.c b/calendar/gui/e-meeting-list-view.c
index c702bdfd77..11f47e6030 100644
--- a/calendar/gui/e-meeting-list-view.c
+++ b/calendar/gui/e-meeting-list-view.c
@@ -28,7 +28,7 @@
 #include <string.h>
 #include <gtk/gtk.h>
 #include <glib/gi18n.h>
-#include <libebook/e-book.h>
+#include <libebook/e-book-client.h>
 #include <libebook/e-vcard.h>
 #include <libecal/e-cal-component.h>
 #include <libecal/e-cal-util.h>
@@ -762,54 +762,54 @@ process_section (EMeetingListView *view, GList *destinations, icalparameter_role
 			/* check if the contact is contact list which is not expanded yet */
 			/* we expand it by getting the list again from the server forming the query */
 			if (contact && e_contact_get (contact , E_CONTACT_IS_LIST)) {
-				EBook *book = NULL;
+				EBookClient *book_client = NULL;
 				ENameSelectorDialog *dialog;
 				ENameSelectorModel *model;
 				EContactStore *c_store;
-				GList *books, *l;
+				GSList *clients, *l;
 				gchar *uri = e_contact_get (contact, E_CONTACT_BOOK_URI);
 
 				dialog = e_name_selector_peek_dialog (view->priv->name_selector);
 				model = e_name_selector_dialog_peek_model (dialog);
 				c_store = e_name_selector_model_peek_contact_store (model);
-				books = e_contact_store_get_books (c_store);
+				clients = e_contact_store_get_clients (c_store);
 
-				for (l = books; l; l = l->next) {
-					EBook *b = l->data;
-					if (g_str_equal (uri, e_book_get_uri (b))) {
-						book = b;
+				for (l = clients; l; l = l->next) {
+					EBookClient *b = l->data;
+					if (g_str_equal (uri, e_client_get_uri (E_CLIENT (b)))) {
+						book_client = b;
 						break;
 					}
 				}
 
-				if (book) {
-					GList *contacts;
+				if (book_client) {
+					GSList *contacts;
 					EContact *n_con = NULL;
-					gchar *qu;
-					EBookQuery *query;
+					gchar *query;
 
-					qu = g_strdup_printf ("(is \"full_name\" \"%s\")",
+					query = g_strdup_printf ("(is \"full_name\" \"%s\")",
 							(gchar *) e_contact_get (contact, E_CONTACT_FULL_NAME));
-					query = e_book_query_from_string (qu);
 
-					if (!e_book_get_contacts (book, query, &contacts, NULL)) {
+					if (!e_book_client_get_contacts_sync (book_client, query, &contacts, NULL, NULL)) {
 						g_warning ("Could not get contact from the book \n");
+						g_free (query);
+						g_slist_free (clients);
 						return;
 					} else {
 						des = e_destination_new ();
 						n_con = contacts->data;
 
 						e_destination_set_contact (des, n_con, 0);
+						e_destination_set_client (des, book_client);
 						list_dests = e_destination_list_get_dests (des);
 
-						g_list_foreach (contacts, (GFunc) g_object_unref, NULL);
-						g_list_free (contacts);
+						g_slist_foreach (contacts, (GFunc) g_object_unref, NULL);
+						g_slist_free (contacts);
 					}
 
-					e_book_query_unref (query);
-					g_free (qu);
+					g_free (query);
 				}
-				g_list_free (books);
+				g_slist_free (clients);
 			} else {
 				card_dest.next = NULL;
 				card_dest.prev = NULL;
@@ -822,31 +822,10 @@ process_section (EMeetingListView *view, GList *destinations, icalparameter_role
 			EDestination *dest = l->data;
 			EContact *contact;
 			const gchar *name, *attendee = NULL;
-			gchar *attr = NULL, *fburi = NULL;
+			gchar *fburi = NULL;
 
 			name = e_destination_get_name (dest);
-
-			/* Get the field as attendee from the backend */
-			if (e_cal_get_ldap_attribute (e_meeting_store_get_client (priv->store),
-						      &attr, NULL)) {
-				/* FIXME this should be more general */
-				if (!g_ascii_strcasecmp (attr, "icscalendar")) {
-
-					/* FIXME: this does not work, have to use first
-					   e_destination_use_contact () */
-					contact = e_destination_get_contact (dest);
-					if (contact) {
-						attendee = e_contact_get (contact, E_CONTACT_FREEBUSY_URL);
-						if (!attendee)
-							attendee = e_contact_get (contact, E_CONTACT_CALENDAR_URI);
-					}
-				}
-			}
-
-			/* If we couldn't get the attendee prior, get the email address as the default */
-			if (attendee == NULL || *attendee == '\0') {
-				attendee = e_destination_get_email (dest);
-			}
+			attendee = e_destination_get_email (dest);
 
 			if (attendee == NULL || *attendee == '\0')
 				continue;
diff --git a/calendar/gui/e-meeting-store.c b/calendar/gui/e-meeting-store.c
index e18c259f65..ca4df0b854 100644
--- a/calendar/gui/e-meeting-store.c
+++ b/calendar/gui/e-meeting-store.c
@@ -49,7 +49,7 @@ struct _EMeetingStorePrivate {
 	GPtrArray *attendees;
 	gint stamp;
 
-	ECal *client;
+	ECalClient *client;
 	icaltimezone *zone;
 
 	gint default_reminder_interval;
@@ -756,9 +756,9 @@ e_meeting_store_class_init (EMeetingStoreClass *class)
 		PROP_CLIENT,
 		g_param_spec_object (
 			"client",
-			"Client",
+			"ECalClient",
 			NULL,
-			E_TYPE_CAL,
+			E_TYPE_CAL_CLIENT,
 			G_PARAM_READWRITE));
 
 	g_object_class_install_property (
@@ -840,7 +840,7 @@ e_meeting_store_new (void)
 	return g_object_new (E_TYPE_MEETING_STORE, NULL);
 }
 
-ECal *
+ECalClient *
 e_meeting_store_get_client (EMeetingStore *store)
 {
 	g_return_val_if_fail (E_IS_MEETING_STORE (store), NULL);
@@ -850,12 +850,12 @@ e_meeting_store_get_client (EMeetingStore *store)
 
 void
 e_meeting_store_set_client (EMeetingStore *store,
-                            ECal *client)
+                            ECalClient *client)
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
 	if (client != NULL) {
-		g_return_if_fail (E_IS_CAL (client));
+		g_return_if_fail (E_IS_CAL_CLIENT (client));
 		g_object_ref (client);
 	}
 
@@ -1454,11 +1454,11 @@ replace_string (gchar *string, const gchar *from_value, gchar *to_value)
 static void start_async_read (const gchar *uri, gpointer data);
 
 typedef struct {
-	ECal *client;
+	ECalClient *client;
 	time_t startt;
 	time_t endt;
-	GList *users;
-	GList *fb_data;
+	GSList *users;
+	GSList *fb_data;
 	gchar *fb_uri;
 	gchar *email;
 	EMeetingAttendee *attendee;
@@ -1469,6 +1469,21 @@ typedef struct {
 #define USER_SUB   "%u"
 #define DOMAIN_SUB "%d"
 
+static void
+client_free_busy_data_cb (ECalClient *client, const GSList *ecalcomps, FreeBusyAsyncData *fbd)
+{
+	const GSList *iter;
+
+	g_return_if_fail (fbd != NULL);
+
+	for (iter = ecalcomps; iter != NULL; iter = iter->next) {
+		ECalComponent *comp = iter->data;
+
+		if (comp)
+			fbd->fb_data = g_slist_prepend (fbd->fb_data, g_object_ref (comp));
+	}
+}
+
 static gboolean
 freebusy_async (gpointer data)
 {
@@ -1480,19 +1495,20 @@ freebusy_async (gpointer data)
 	EMeetingStorePrivate *priv = fbd->store->priv;
 
 	if (fbd->client) {
+		guint sigid;
 		/* FIXME This a workaround for getting all the free busy
 		 *       information for the users.  We should be able to
 		 *       get free busy asynchronously. */
 		g_static_mutex_lock (&mutex);
 		priv->num_queries++;
-		e_cal_get_free_busy (
-			fbd->client, fbd->users, fbd->startt,
-			fbd->endt, &(fbd->fb_data), NULL);
+		sigid = g_signal_connect (fbd->client, "free-busy-data", G_CALLBACK (client_free_busy_data_cb), fbd);
+		e_cal_client_get_free_busy_sync (fbd->client, fbd->startt, fbd->endt, fbd->users, NULL, NULL);
+		g_signal_handler_disconnect (fbd->client, sigid);
 		priv->num_queries--;
 		g_static_mutex_unlock (&mutex);
 
-		g_list_foreach (fbd->users, (GFunc) g_free, NULL);
-		g_list_free (fbd->users);
+		g_slist_foreach (fbd->users, (GFunc) g_free, NULL);
+		g_slist_free (fbd->users);
 
 		if (fbd->fb_data != NULL) {
 			ECalComponent *comp = fbd->fb_data->data;
@@ -1623,7 +1639,7 @@ refresh_busy_periods (gpointer data)
 		fbd->endt = icaltime_as_timet_with_zone (itt, priv->zone);
 		fbd->qdata = qdata;
 
-		fbd->users = g_list_append (fbd->users, g_strdup (fbd->email));
+		fbd->users = g_slist_append (fbd->users, g_strdup (fbd->email));
 
 	}
 
@@ -1634,8 +1650,8 @@ refresh_busy_periods (gpointer data)
 	thread = g_thread_create ((GThreadFunc) freebusy_async, fbd, FALSE, &error);
 	if (!thread) {
 		/* do clean up stuff here */
-		g_list_foreach (fbd->users, (GFunc) g_free, NULL);
-		g_list_free (fbd->users);
+		g_slist_foreach (fbd->users, (GFunc) g_free, NULL);
+		g_slist_free (fbd->users);
 		g_free (fbd->email);
 		priv->refresh_idle_id = 0;
 
diff --git a/calendar/gui/e-meeting-store.h b/calendar/gui/e-meeting-store.h
index 2c863ef506..ec98bae554 100644
--- a/calendar/gui/e-meeting-store.h
+++ b/calendar/gui/e-meeting-store.h
@@ -24,7 +24,7 @@
 #define E_MEETING_STORE_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <e-util/e-util-enums.h>
 #include "e-meeting-attendee.h"
 
@@ -86,9 +86,9 @@ void		e_meeting_store_set_value	(EMeetingStore *meeting_store,
 						 gint row,
 						 gint col,
 						 const gchar *val);
-ECal *		e_meeting_store_get_client	(EMeetingStore *meeting_store);
+ECalClient *	e_meeting_store_get_client	(EMeetingStore *meeting_store);
 void		e_meeting_store_set_client	(EMeetingStore *meeting_store,
-						 ECal *client);
+						 ECalClient *client);
 gint		e_meeting_store_get_default_reminder_interval
 						(EMeetingStore *meeting_store);
 void		e_meeting_store_set_default_reminder_interval
diff --git a/calendar/gui/e-memo-list-selector.c b/calendar/gui/e-memo-list-selector.c
index bb41412417..abc4bf9bf3 100644
--- a/calendar/gui/e-memo-list-selector.c
+++ b/calendar/gui/e-memo-list-selector.c
@@ -25,9 +25,9 @@
 #include "e-memo-list-selector.h"
 
 #include <string.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
+#include <libedataserverui/e-client-utils.h>
 #include "e-util/e-selection.h"
-#include "calendar/common/authentication.h"
 #include "calendar/gui/comp-util.h"
 
 struct _EMemoListSelectorPrivate {
@@ -37,23 +37,31 @@ struct _EMemoListSelectorPrivate {
 static gpointer parent_class;
 
 static gboolean
-memo_list_selector_update_single_object (ECal *client,
+memo_list_selector_update_single_object (ECalClient *client,
                                          icalcomponent *icalcomp)
 {
-	gchar *uid;
+	gchar *uid = NULL;
 	icalcomponent *tmp_icalcomp;
 
 	uid = (gchar *) icalcomponent_get_uid (icalcomp);
 
-	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
-		return e_cal_modify_object (
-			client, icalcomp, CALOBJ_MOD_ALL, NULL);
+	if (e_cal_client_get_object_sync (client, uid, NULL, &tmp_icalcomp, NULL, NULL))
+		return e_cal_client_modify_object_sync (
+			client, icalcomp, CALOBJ_MOD_ALL, NULL, NULL);
 
-	return e_cal_create_object (client, icalcomp, &uid, NULL);
+	if (!e_cal_client_create_object_sync (client, icalcomp, &uid, NULL, NULL))
+		return FALSE;
+
+	if (uid)
+		icalcomponent_set_uid (icalcomp, uid);
+
+	g_free (uid);
+
+	return TRUE;
 }
 
 static gboolean
-memo_list_selector_update_objects (ECal *client,
+memo_list_selector_update_objects (ECalClient *client,
                                    icalcomponent *icalcomp)
 {
 	icalcomponent *subcomp;
@@ -74,14 +82,19 @@ memo_list_selector_update_objects (ECal *client,
 		kind = icalcomponent_isa (subcomp);
 		if (kind == ICAL_VTIMEZONE_COMPONENT) {
 			icaltimezone *zone;
+			GError *error = NULL;
 
 			zone = icaltimezone_new ();
 			icaltimezone_set_component (zone, subcomp);
 
-			success = e_cal_add_timezone (client, zone, NULL);
+			success = e_cal_client_add_timezone_sync (client, zone, NULL, &error);
 			icaltimezone_free (zone, 1);
-			if (!success)
+			if (!success) {
+				g_debug ("%s: Failed to add timezone: %s", G_STRFUNC, error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
 				return FALSE;
+			}
 		} else if (kind == ICAL_VJOURNAL_COMPONENT) {
 			success = memo_list_selector_update_single_object (
 				client, subcomp);
@@ -96,9 +109,36 @@ memo_list_selector_update_objects (ECal *client,
 	return TRUE;
 }
 
+static void
+client_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	gchar *uid = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
+
+	g_return_if_fail (uid != NULL);
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
+
+	if (error) {
+		g_debug ("%s: Failed to open memo list: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
+
+	if (client) {
+		if (!e_client_is_readonly (client))
+			e_cal_client_remove_object_sync (E_CAL_CLIENT (client), uid, NULL, CALOBJ_MOD_THIS, NULL, NULL);
+
+		g_object_unref (client);
+	}
+
+	g_free (uid);
+}
+
 static gboolean
 memo_list_selector_process_data (ESourceSelector *selector,
-                                 ECal *client,
+                                 ECalClient *client,
                                  const gchar *source_uid,
                                  icalcomponent *icalcomp,
                                  GdkDragAction action)
@@ -109,7 +149,6 @@ memo_list_selector_process_data (ESourceSelector *selector,
 	const gchar *uid;
 	gchar *old_uid = NULL;
 	gboolean success = FALSE;
-	gboolean read_only = TRUE;
 	GError *error = NULL;
 
 	/* FIXME Deal with GDK_ACTION_ASK. */
@@ -123,13 +162,13 @@ memo_list_selector_process_data (ESourceSelector *selector,
 	if (old_uid == NULL)
 		old_uid = g_strdup (uid);
 
-	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, &error)) {
+	if (e_cal_client_get_object_sync (client, uid, NULL, &tmp_icalcomp, NULL, &error)) {
 		icalcomponent_free (tmp_icalcomp);
 		success = TRUE;
 		goto exit;
 	}
 
-	if (error != NULL && error->code != E_CALENDAR_STATUS_OBJECT_NOT_FOUND) {
+	if (error != NULL && !g_error_matches (error, E_CAL_CLIENT_ERROR, E_CAL_CLIENT_ERROR_OBJECT_NOT_FOUND)) {
 		g_message (
 			"Failed to search the object in destination "
 			"task list: %s", error->message);
@@ -137,6 +176,9 @@ memo_list_selector_process_data (ESourceSelector *selector,
 		goto exit;
 	}
 
+	if (error)
+		g_error_free (error);
+
 	success = memo_list_selector_update_objects (client, icalcomp);
 
 	if (!success || action != GDK_ACTION_MOVE)
@@ -148,74 +190,93 @@ memo_list_selector_process_data (ESourceSelector *selector,
 	if (!E_IS_SOURCE (source) || e_source_get_readonly (source))
 		goto exit;
 
-	client = e_auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_JOURNAL);
-	if (client == NULL) {
-		g_message ("Cannot create source client to remove old memo");
-		goto exit;
-	}
-
-	e_cal_is_read_only (client, &read_only, NULL);
-	if (!read_only && e_cal_open (client, TRUE, NULL))
-		e_cal_remove_object (client, old_uid, NULL);
-	else if (!read_only)
-		g_message ("Cannot open source client to remove old memo");
+	e_client_utils_open_new (source, E_CLIENT_SOURCE_TYPE_MEMOS, TRUE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_cb, g_strdup (old_uid));
 
-	g_object_unref (client);
-
-exit:
+ exit:
 	g_free (old_uid);
 
 	return success;
 }
 
-static gboolean
-memo_list_selector_data_dropped (ESourceSelector *selector,
-                                 GtkSelectionData *selection_data,
-                                 ESource *destination,
-                                 GdkDragAction action,
-                                 guint info)
+struct DropData
 {
-	ECal *client;
-	GSList *list, *iter;
-	gboolean success = FALSE;
+	ESourceSelector *selector;
+	GdkDragAction action;
+	GSList *list;
+};
 
-	client = e_auth_new_cal_from_source (
-		destination, E_CAL_SOURCE_TYPE_JOURNAL);
+static void
+client_opened_for_drop_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	struct DropData *dd = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
 
-	if (client == NULL || !e_cal_open (client, TRUE, NULL))
-		goto exit;
+	g_return_if_fail (dd != NULL);
 
-	list = cal_comp_selection_get_string_list (selection_data);
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
 
-	for (iter = list; iter != NULL; iter = iter->next) {
-		gchar *source_uid = iter->data;
-		icalcomponent *icalcomp;
-		gchar *component_string;
+	if (error) {
+		g_debug ("%s: Failed to open memo list: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
 
-		/* Each string is "source_uid\ncomponent_string". */
-		component_string = strchr (source_uid, '\n');
-		if (component_string == NULL)
-			continue;
+	if (client) {
+		ECalClient *cal_client = E_CAL_CLIENT (client);
+		GSList *iter;
 
-		*component_string++ = '\0';
-		icalcomp = icalparser_parse_string (component_string);
-		if (icalcomp == NULL)
-			continue;
+		for (iter = dd->list; iter != NULL; iter = iter->next) {
+			gchar *source_uid = iter->data;
+			icalcomponent *icalcomp;
+			gchar *component_string;
 
-		success = memo_list_selector_process_data (
-			selector, client, source_uid, icalcomp, action);
+			/* Each string is "source_uid\ncomponent_string". */
+			component_string = strchr (source_uid, '\n');
+			if (component_string == NULL)
+				continue;
 
-		icalcomponent_free (icalcomp);
-	}
+			*component_string++ = '\0';
+			icalcomp = icalparser_parse_string (component_string);
+			if (icalcomp == NULL)
+				continue;
+
+			memo_list_selector_process_data (
+				dd->selector, cal_client, source_uid, icalcomp, dd->action);
 
-	g_slist_foreach (list, (GFunc) g_free, NULL);
-	g_slist_free (list);
+			icalcomponent_free (icalcomp);
+		}
 
-exit:
-	if (client != NULL)
 		g_object_unref (client);
+	}
 
-	return success;
+	g_slist_foreach (dd->list, (GFunc) g_free, NULL);
+	g_slist_free (dd->list);
+	g_object_unref (dd->selector);
+	g_free (dd);
+}
+
+static gboolean
+memo_list_selector_data_dropped (ESourceSelector *selector,
+                                 GtkSelectionData *selection_data,
+                                 ESource *destination,
+                                 GdkDragAction action,
+                                 guint info)
+{
+	struct DropData *dd;
+
+	dd = g_new0 (struct DropData, 1);
+	dd->selector = g_object_ref (selector);
+	dd->action = action;
+	dd->list = cal_comp_selection_get_string_list (selection_data);
+
+	e_client_utils_open_new (destination, E_CLIENT_SOURCE_TYPE_MEMOS, TRUE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_for_drop_cb, dd);
+
+	return TRUE;
 }
 
 static void
diff --git a/calendar/gui/e-memo-table.c b/calendar/gui/e-memo-table.c
index ab0ce1253d..e6396427da 100644
--- a/calendar/gui/e-memo-table.c
+++ b/calendar/gui/e-memo-table.c
@@ -155,7 +155,7 @@ static void
 memo_table_model_cal_view_progress_cb (EMemoTable *memo_table,
                                        const gchar *message,
                                        gint progress,
-                                       ECalSourceType type)
+                                       ECalClientSourceType type)
 {
 	gdouble percent = (gdouble) progress;
 
@@ -164,9 +164,8 @@ memo_table_model_cal_view_progress_cb (EMemoTable *memo_table,
 
 static void
 memo_table_model_cal_view_complete_cb ( EMemoTable *memo_table,
-					ECalendarStatus status,
-					const gchar *error_msg,
-					ECalSourceType type)
+					const GError *error,
+					ECalClientSourceType type)
 {
 	memo_table_emit_status_message (memo_table, NULL, -1.0);
 }
@@ -187,8 +186,8 @@ delete_selected_components (EMemoTable *memo_table)
 		ECalModelComponent *comp_data = (ECalModelComponent *) l->data;
 		GError *error = NULL;
 
-		e_cal_remove_object (comp_data->client,
-				     icalcomponent_get_uid (comp_data->icalcomp), &error);
+		e_cal_client_remove_object_sync (comp_data->client,
+				     icalcomponent_get_uid (comp_data->icalcomp), NULL, CALOBJ_MOD_THIS, NULL, &error);
 		delete_error_dialog (error, E_CAL_COMPONENT_JOURNAL);
 		g_clear_error (&error);
 	}
@@ -560,8 +559,8 @@ memo_table_query_tooltip (GtkWidget *widget,
 			e_cal_component_get_icalcomponent (new_comp),
 			dtstart.tzid);
 		if (!zone)
-			e_cal_get_timezone (
-				comp_data->client, dtstart.tzid, &zone, NULL);
+			e_cal_client_get_timezone_sync (
+				comp_data->client, dtstart.tzid, &zone, NULL, NULL);
 		if (!zone)
 			zone = default_zone;
 	} else {
@@ -701,12 +700,10 @@ memo_table_update_actions (ESelectable *selectable,
 	n_selected = e_table_selected_count (E_TABLE (memo_table));
 
 	list = e_memo_table_get_selected (memo_table);
-	for (iter = list; iter != NULL; iter = iter->next) {
+	for (iter = list; iter != NULL && sources_are_editable; iter = iter->next) {
 		ECalModelComponent *comp_data = iter->data;
-		gboolean read_only;
 
-		e_cal_is_read_only (comp_data->client, &read_only, NULL);
-		sources_are_editable &= !read_only;
+		sources_are_editable = sources_are_editable && !e_client_is_readonly (E_CLIENT (comp_data->client));
 	}
 	g_slist_free (list);
 
@@ -826,7 +823,7 @@ clipboard_get_calendar_data (EMemoTable *memo_table,
 	icalcomponent *icalcomp;
 	gchar *uid;
 	ECalComponent *comp;
-	ECal *client;
+	ECalClient *client;
 	ECalModel *model;
 	icalcomponent_kind kind;
 	const gchar *status_message;
@@ -869,6 +866,7 @@ clipboard_get_calendar_data (EMemoTable *memo_table,
 			    child_kind == ICAL_VTODO_COMPONENT ||
 			    child_kind == ICAL_VJOURNAL_COMPONENT) {
 				ECalComponent *tmp_comp;
+				GError *error = NULL;
 
 				uid = e_cal_component_gen_uid ();
 				tmp_comp = e_cal_component_new ();
@@ -876,31 +874,45 @@ clipboard_get_calendar_data (EMemoTable *memo_table,
 					tmp_comp,
 					icalcomponent_new_clone (subcomp));
 				e_cal_component_set_uid (tmp_comp, uid);
-				free (uid);
+				g_free (uid);
+				uid = NULL;
 
 				/* FIXME Should we convert start/due/complete
 				 *       times?  Also, need error handling.*/
-				e_cal_create_object (
-					client, e_cal_component_get_icalcomponent (tmp_comp),
-					NULL, NULL);
+				if (!e_cal_client_create_object_sync (client, e_cal_component_get_icalcomponent (tmp_comp), &uid, NULL, &error))
+					uid = NULL;
 
+				g_free (uid);
 				g_object_unref (tmp_comp);
+
+				if (error) {
+					g_debug ("%s: Failed to create object: %s", G_STRFUNC, error->message);
+					g_error_free (error);
+				}
 			}
 			subcomp = icalcomponent_get_next_component (
 				vcal_comp, ICAL_ANY_COMPONENT);
 		}
 	} else {
+		GError *error = NULL;
+
 		comp = e_cal_component_new ();
 		e_cal_component_set_icalcomponent (comp, icalcomp);
 		uid = e_cal_component_gen_uid ();
 		e_cal_component_set_uid (comp, (const gchar *) uid);
-		free (uid);
+		g_free (uid);
 
-		e_cal_create_object (
-			client, e_cal_component_get_icalcomponent (comp),
-			NULL, NULL);
+		uid = NULL;
+		if (!e_cal_client_create_object_sync (client, e_cal_component_get_icalcomponent (comp), &uid, NULL, &error))
+			uid = NULL;
 
+		g_free (uid);
 		g_object_unref (comp);
+
+		if (error) {
+			g_debug ("%s: Failed to create object: %s", G_STRFUNC, error->message);
+			g_error_free (error);
+		}
 	}
 
 	memo_table_emit_status_message (memo_table, NULL, -1.0);
diff --git a/calendar/gui/e-task-list-selector.c b/calendar/gui/e-task-list-selector.c
index 6967648b1f..9d1fb5cb99 100644
--- a/calendar/gui/e-task-list-selector.c
+++ b/calendar/gui/e-task-list-selector.c
@@ -25,9 +25,9 @@
 #include "e-task-list-selector.h"
 
 #include <string.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
+#include <libedataserverui/e-client-utils.h>
 #include "e-util/e-selection.h"
-#include "calendar/common/authentication.h"
 #include "calendar/gui/comp-util.h"
 
 struct _ETaskListSelectorPrivate {
@@ -37,23 +37,31 @@ struct _ETaskListSelectorPrivate {
 static gpointer parent_class;
 
 static gboolean
-task_list_selector_update_single_object (ECal *client,
+task_list_selector_update_single_object (ECalClient *client,
                                          icalcomponent *icalcomp)
 {
-	gchar *uid;
+	gchar *uid = NULL;
 	icalcomponent *tmp_icalcomp;
 
 	uid = (gchar *) icalcomponent_get_uid (icalcomp);
 
-	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
-		return e_cal_modify_object (
-			client, icalcomp, CALOBJ_MOD_ALL, NULL);
+	if (e_cal_client_get_object_sync (client, uid, NULL, &tmp_icalcomp, NULL, NULL))
+		return e_cal_client_modify_object_sync (
+			client, icalcomp, CALOBJ_MOD_ALL, NULL, NULL);
 
-	return e_cal_create_object (client, icalcomp, &uid, NULL);
+	if (!e_cal_client_create_object_sync (client, icalcomp, &uid, NULL, NULL))
+		return FALSE;
+
+	if (uid)
+		icalcomponent_set_uid (icalcomp, uid);
+
+	g_free (uid);
+
+	return TRUE;
 }
 
 static gboolean
-task_list_selector_update_objects (ECal *client,
+task_list_selector_update_objects (ECalClient *client,
                                    icalcomponent *icalcomp)
 {
 	icalcomponent *subcomp;
@@ -74,14 +82,19 @@ task_list_selector_update_objects (ECal *client,
 		kind = icalcomponent_isa (subcomp);
 		if (kind == ICAL_VTIMEZONE_COMPONENT) {
 			icaltimezone *zone;
+			GError *error = NULL;
 
 			zone = icaltimezone_new ();
 			icaltimezone_set_component (zone, subcomp);
 
-			success = e_cal_add_timezone (client, zone, NULL);
+			success = e_cal_client_add_timezone_sync (client, zone, NULL, &error);
 			icaltimezone_free (zone, 1);
-			if (!success)
+			if (!success) {
+				g_debug ("%s: Failed to add timezone: %s", G_STRFUNC, error ? error->message : "Unknown error");
+				if (error)
+					g_error_free (error);
 				return FALSE;
+			}
 		} else if (kind == ICAL_VTODO_COMPONENT ||
 			kind == ICAL_VEVENT_COMPONENT) {
 			success = task_list_selector_update_single_object (
@@ -97,9 +110,36 @@ task_list_selector_update_objects (ECal *client,
 	return TRUE;
 }
 
+static void
+client_opened_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	gchar *uid = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
+
+	g_return_if_fail (uid != NULL);
+
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
+
+	if (error) {
+		g_debug ("%s: Failed to open task list: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
+
+	if (client) {
+		if (!e_client_is_readonly (client))
+			e_cal_client_remove_object_sync (E_CAL_CLIENT (client), uid, NULL, CALOBJ_MOD_THIS, NULL, NULL);
+
+		g_object_unref (client);
+	}
+
+	g_free (uid);
+}
+
 static gboolean
 task_list_selector_process_data (ESourceSelector *selector,
-                                 ECal *client,
+                                 ECalClient *client,
                                  const gchar *source_uid,
                                  icalcomponent *icalcomp,
                                  GdkDragAction action)
@@ -110,7 +150,6 @@ task_list_selector_process_data (ESourceSelector *selector,
 	const gchar *uid;
 	gchar *old_uid = NULL;
 	gboolean success = FALSE;
-	gboolean read_only = TRUE;
 	GError *error = NULL;
 
 	/* FIXME Deal with GDK_ACTION_ASK. */
@@ -124,13 +163,13 @@ task_list_selector_process_data (ESourceSelector *selector,
 	if (old_uid == NULL)
 		old_uid = g_strdup (uid);
 
-	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, &error)) {
+	if (e_cal_client_get_object_sync (client, uid, NULL, &tmp_icalcomp, NULL, &error)) {
 		icalcomponent_free (tmp_icalcomp);
 		success = TRUE;
 		goto exit;
 	}
 
-	if (error != NULL && error->code != E_CALENDAR_STATUS_OBJECT_NOT_FOUND) {
+	if (error != NULL && !g_error_matches (error, E_CAL_CLIENT_ERROR, E_CAL_CLIENT_ERROR_OBJECT_NOT_FOUND)) {
 		g_message (
 			"Failed to search the object in destination "
 			"task list: %s", error->message);
@@ -138,6 +177,10 @@ task_list_selector_process_data (ESourceSelector *selector,
 		goto exit;
 	}
 
+	if (error)
+		g_error_free (error);
+	error = NULL;
+
 	success = task_list_selector_update_objects (client, icalcomp);
 
 	if (!success || action != GDK_ACTION_MOVE)
@@ -149,74 +192,93 @@ task_list_selector_process_data (ESourceSelector *selector,
 	if (!E_IS_SOURCE (source) || e_source_get_readonly (source))
 		goto exit;
 
-	client = e_auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_TODO);
-	if (client == NULL) {
-		g_message ("Cannot create source client to remove old task");
-		goto exit;
-	}
-
-	e_cal_is_read_only (client, &read_only, NULL);
-	if (!read_only && e_cal_open (client, TRUE, NULL))
-		e_cal_remove_object (client, old_uid, NULL);
-	else if (!read_only)
-		g_message ("Cannot open source client to remove old task");
+	e_client_utils_open_new (source, E_CLIENT_SOURCE_TYPE_MEMOS, TRUE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_cb, g_strdup (old_uid));
 
-	g_object_unref (client);
-
-exit:
+ exit:
 	g_free (old_uid);
 
 	return success;
 }
 
-static gboolean
-task_list_selector_data_dropped (ESourceSelector *selector,
-                                 GtkSelectionData *selection_data,
-                                 ESource *destination,
-                                 GdkDragAction action,
-                                 guint info)
+struct DropData
 {
-	ECal *client;
-	GSList *list, *iter;
-	gboolean success = FALSE;
+	ESourceSelector *selector;
+	GdkDragAction action;
+	GSList *list;
+};
 
-	client = e_auth_new_cal_from_source (
-		destination, E_CAL_SOURCE_TYPE_TODO);
+static void
+client_opened_for_drop_cb (GObject *source_object, GAsyncResult *result, gpointer user_data)
+{
+	struct DropData *dd = user_data;
+	EClient *client = NULL;
+	GError *error = NULL;
 
-	if (client == NULL || !e_cal_open (client, TRUE, NULL))
-		goto exit;
+	g_return_if_fail (dd != NULL);
 
-	list = cal_comp_selection_get_string_list (selection_data);
+	if (!e_client_utils_open_new_finish (E_SOURCE (source_object), result, &client, &error))
+		client = NULL;
 
-	for (iter = list; iter != NULL; iter = iter->next) {
-		gchar *source_uid = iter->data;
-		icalcomponent *icalcomp;
-		gchar *component_string;
+	if (error) {
+		g_debug ("%s: Failed to open task list: %s", G_STRFUNC, error->message);
+		g_error_free (error);
+	}
 
-		/* Each string is "source_uid\ncomponent_string". */
-		component_string = strchr (source_uid, '\n');
-		if (component_string == NULL)
-			continue;
+	if (client) {
+		ECalClient *cal_client = E_CAL_CLIENT (client);
+		GSList *iter;
 
-		*component_string++ = '\0';
-		icalcomp = icalparser_parse_string (component_string);
-		if (icalcomp == NULL)
-			continue;
+		for (iter = dd->list; iter != NULL; iter = iter->next) {
+			gchar *source_uid = iter->data;
+			icalcomponent *icalcomp;
+			gchar *component_string;
 
-		success = task_list_selector_process_data (
-			selector, client, source_uid, icalcomp, action);
+			/* Each string is "source_uid\ncomponent_string". */
+			component_string = strchr (source_uid, '\n');
+			if (component_string == NULL)
+				continue;
 
-		icalcomponent_free (icalcomp);
-	}
+			*component_string++ = '\0';
+			icalcomp = icalparser_parse_string (component_string);
+			if (icalcomp == NULL)
+				continue;
+
+			task_list_selector_process_data (
+				dd->selector, cal_client, source_uid, icalcomp, dd->action);
 
-	g_slist_foreach (list, (GFunc) g_free, NULL);
-	g_slist_free (list);
+			icalcomponent_free (icalcomp);
+		}
 
-exit:
-	if (client != NULL)
 		g_object_unref (client);
+	}
 
-	return success;
+	g_slist_foreach (dd->list, (GFunc) g_free, NULL);
+	g_slist_free (dd->list);
+	g_object_unref (dd->selector);
+	g_free (dd);
+}
+
+static gboolean
+task_list_selector_data_dropped (ESourceSelector *selector,
+                                 GtkSelectionData *selection_data,
+                                 ESource *destination,
+                                 GdkDragAction action,
+                                 guint info)
+{
+	struct DropData *dd;
+
+	dd = g_new0 (struct DropData, 1);
+	dd->selector = g_object_ref (selector);
+	dd->action = action;
+	dd->list = cal_comp_selection_get_string_list (selection_data);
+
+	e_client_utils_open_new (destination, E_CLIENT_SOURCE_TYPE_TASKS, TRUE, NULL,
+		e_client_utils_authenticate_handler, NULL,
+		client_opened_for_drop_cb, dd);
+
+	return TRUE;
 }
 
 static void
diff --git a/calendar/gui/e-task-table.c b/calendar/gui/e-task-table.c
index 540ce1cc63..38b1d9ece5 100644
--- a/calendar/gui/e-task-table.c
+++ b/calendar/gui/e-task-table.c
@@ -233,7 +233,7 @@ static void
 task_table_model_cal_view_progress_cb (ETaskTable *task_table,
                                        const gchar *message,
                                        gint progress,
-                                       ECalSourceType type)
+                                       ECalClientSourceType type)
 {
 	gdouble percent = (gdouble) progress;
 
@@ -242,9 +242,8 @@ task_table_model_cal_view_progress_cb (ETaskTable *task_table,
 
 static void
 task_table_model_cal_view_complete_cb ( ETaskTable *task_table,
-					ECalendarStatus status,
-					const gchar *error_msg,
-					ECalSourceType type)
+					const GError *error,
+					ECalClientSourceType type)
 {
 	task_table_emit_status_message (task_table, NULL, -1.0);
 }
@@ -265,8 +264,7 @@ delete_selected_components (ETaskTable *task_table)
 		ECalModelComponent *comp_data = (ECalModelComponent *) l->data;
 		GError *error = NULL;
 
-		e_cal_remove_object (comp_data->client,
-				     icalcomponent_get_uid (comp_data->icalcomp), &error);
+		e_cal_client_remove_object_sync (comp_data->client, icalcomponent_get_uid (comp_data->icalcomp), NULL, CALOBJ_MOD_THIS, NULL, &error);
 		delete_error_dialog (error, E_CAL_COMPONENT_TODO);
 		g_clear_error (&error);
 	}
@@ -782,8 +780,8 @@ task_table_query_tooltip (GtkWidget *widget,
 			e_cal_component_get_icalcomponent (new_comp),
 			dtstart.tzid);
 		if (!zone)
-			e_cal_get_timezone (
-				comp_data->client, dtstart.tzid, &zone, NULL);
+			e_cal_client_get_timezone_sync (
+				comp_data->client, dtstart.tzid, &zone, NULL, NULL);
 		if (!zone)
 			zone = default_zone;
 	} else {
@@ -932,12 +930,10 @@ task_table_update_actions (ESelectable *selectable,
 	n_selected = e_table_selected_count (E_TABLE (task_table));
 
 	list = e_task_table_get_selected (task_table);
-	for (iter = list; iter != NULL; iter = iter->next) {
+	for (iter = list; iter != NULL && sources_are_editable; iter = iter->next) {
 		ECalModelComponent *comp_data = iter->data;
-		gboolean read_only;
 
-		e_cal_is_read_only (comp_data->client, &read_only, NULL);
-		sources_are_editable &= !read_only;
+		sources_are_editable = sources_are_editable && !e_client_is_readonly (E_CLIENT (comp_data->client));
 	}
 	g_slist_free (list);
 
@@ -1058,7 +1054,7 @@ clipboard_get_calendar_data (ETaskTable *task_table,
 	gchar *uid;
 	ECalComponent *comp;
 	ECalModel *model;
-	ECal *client;
+	ECalClient *client;
 	icalcomponent_kind kind;
 	const gchar *status_message;
 
@@ -1100,6 +1096,7 @@ clipboard_get_calendar_data (ETaskTable *task_table,
 			    child_kind == ICAL_VTODO_COMPONENT ||
 			    child_kind == ICAL_VJOURNAL_COMPONENT) {
 				ECalComponent *tmp_comp;
+				GError *error = NULL;
 
 				uid = e_cal_component_gen_uid ();
 				tmp_comp = e_cal_component_new ();
@@ -1107,31 +1104,45 @@ clipboard_get_calendar_data (ETaskTable *task_table,
 					tmp_comp,
 					icalcomponent_new_clone (subcomp));
 				e_cal_component_set_uid (tmp_comp, uid);
-				free (uid);
+				g_free (uid);
+				uid = NULL;
 
 				/* FIXME should we convert start/due/complete
 				 * times?  Also, need error handling. */
-				e_cal_create_object (
-					client, e_cal_component_get_icalcomponent (tmp_comp),
-					NULL, NULL);
+				if (!e_cal_client_create_object_sync (client, e_cal_component_get_icalcomponent (tmp_comp), &uid, NULL, &error))
+					uid = NULL;
+
+				if (error) {
+					g_debug ("%s: Failed to create object: %s", G_STRFUNC, error->message);
+					g_error_free (error);
+				}
 
 				g_object_unref (tmp_comp);
+				g_free (uid);
 			}
 			subcomp = icalcomponent_get_next_component (
 				vcal_comp, ICAL_ANY_COMPONENT);
 		}
 	} else {
+		GError *error = NULL;
+
 		comp = e_cal_component_new ();
 		e_cal_component_set_icalcomponent (comp, icalcomp);
 		uid = e_cal_component_gen_uid ();
 		e_cal_component_set_uid (comp, (const gchar *) uid);
-		free (uid);
+		g_free (uid);
+		uid = NULL;
 
-		e_cal_create_object (
-			client, e_cal_component_get_icalcomponent (comp),
-			NULL, NULL);
+		if (!e_cal_client_create_object_sync (client, e_cal_component_get_icalcomponent (comp), &uid, NULL, &error))
+			uid = NULL;
+
+		if (error) {
+			g_debug ("%s: Failed to create object: %s", G_STRFUNC, error->message);
+			g_error_free (error);
+		}
 
 		g_object_unref (comp);
+		g_free (uid);
 	}
 
 	task_table_emit_status_message (task_table, NULL, -1.0);
@@ -1228,7 +1239,7 @@ add_retract_data (ECalComponent *comp, const gchar *retract_comment)
 }
 
 static gboolean
-check_for_retract (ECalComponent *comp, ECal *client)
+check_for_retract (ECalComponent *comp, ECalClient *client)
 {
 	ECalComponentOrganizer org;
 	gchar *email = NULL;
@@ -1238,15 +1249,15 @@ check_for_retract (ECalComponent *comp, ECal *client)
 	if (!e_cal_component_has_attendees (comp))
 		return FALSE;
 
-	if (!e_cal_get_save_schedules (client))
+	if (!e_cal_client_check_save_schedules (client))
 		return FALSE;
 
 	e_cal_component_get_organizer (comp, &org);
 	strip = itip_strip_mailto (org.value);
 
 	ret_val =
-		e_cal_get_cal_address (client, &email, NULL) &&
-		g_ascii_strcasecmp (email, strip) == 0;
+		e_client_get_backend_property_sync (E_CLIENT (client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &email, NULL, NULL) &&
+		email && g_ascii_strcasecmp (email, strip) == 0;
 
 	g_free (email);
 
@@ -1292,14 +1303,13 @@ task_table_delete_selection (ESelectable *selectable)
 			comp, &retract_comment,
 			GTK_WIDGET (task_table), &retract);
 		if (retract) {
-			GList *users = NULL;
+			GSList *users = NULL;
 			icalcomponent *icalcomp = NULL, *mod_comp = NULL;
 
 			add_retract_data (comp, retract_comment);
 			icalcomp = e_cal_component_get_icalcomponent (comp);
 			icalcomponent_set_method (icalcomp, ICAL_METHOD_CANCEL);
-			if (!e_cal_send_objects (comp_data->client, icalcomp, &users,
-						&mod_comp, &error))	{
+			if (!e_cal_client_send_objects_sync (comp_data->client, icalcomp, &users, &mod_comp, NULL, &error)) {
 				delete_error_dialog (error, E_CAL_COMPONENT_TODO);
 				g_clear_error (&error);
 				error = NULL;
@@ -1309,8 +1319,8 @@ task_table_delete_selection (ESelectable *selectable)
 					icalcomponent_free (mod_comp);
 
 				if (users) {
-					g_list_foreach (users, (GFunc) g_free, NULL);
-					g_list_free (users);
+					g_slist_foreach (users, (GFunc) g_free, NULL);
+					g_slist_free (users);
 				}
 			}
 
@@ -1596,17 +1606,21 @@ hide_completed_rows (ECalModel *model,
                      gchar *hide_sexp,
                      GPtrArray *comp_objects)
 {
-	GList *l, *m, *objects;
-	ECal *client;
+	GList *l;
+	GSList *m, *objects;
+	ECalClient *client;
 	gint pos;
 	gboolean changed = FALSE;
 
 	for (l = clients_list; l != NULL; l = l->next) {
-		client = l->data;
+		GError *error = NULL;
 
-		if (!e_cal_get_object_list (client, hide_sexp, &objects, NULL)) {
-			g_warning (G_STRLOC ": Could not get the objects");
+		client = l->data;
 
+		if (!e_cal_client_get_object_list_sync (client, hide_sexp, &objects, NULL, &error)) {
+			g_debug ("%s: Could not get the objects: %s", G_STRFUNC, error ? error->message : "Unknown error");
+			if (error)
+				g_error_free (error);
 			continue;
 		}
 
@@ -1635,8 +1649,8 @@ hide_completed_rows (ECalModel *model,
 			g_object_unref (comp);
 		}
 
-		g_list_foreach (objects, (GFunc) icalcomponent_free, NULL);
-		g_list_free (objects);
+		g_slist_foreach (objects, (GFunc) icalcomponent_free, NULL);
+		g_slist_free (objects);
 	}
 
 	if (changed) {
@@ -1652,15 +1666,19 @@ show_completed_rows (ECalModel *model,
                      gchar *show_sexp,
                      GPtrArray *comp_objects)
 {
-	GList *l, *m, *objects;
-	ECal *client;
+	GList *l;
+	GSList *m, *objects;
+	ECalClient *client;
 
 	for (l = clients_list; l != NULL; l = l->next) {
-		client = l->data;
+		GError *error = NULL;
 
-		if (!e_cal_get_object_list (client, show_sexp, &objects, NULL)) {
-			g_warning (G_STRLOC ": Could not get the objects");
+		client = l->data;
 
+		if (!e_cal_client_get_object_list_sync (client, show_sexp, &objects, NULL, &error)) {
+			g_debug ("%s: Could not get the objects: %s", G_STRFUNC, error ? error->message : "Unknown error");
+			if (error)
+				g_error_free (error);
 			continue;
 		}
 
@@ -1697,6 +1715,9 @@ show_completed_rows (ECalModel *model,
 			e_cal_component_free_id (id);
 			g_object_unref (comp);
 		}
+
+		g_slist_foreach (objects, (GFunc) icalcomponent_free, NULL);
+		g_slist_free (objects);
 	}
 }
 
diff --git a/calendar/gui/e-timezone-entry.h b/calendar/gui/e-timezone-entry.h
index 6c0cd1dc6b..59d2c00cb1 100644
--- a/calendar/gui/e-timezone-entry.h
+++ b/calendar/gui/e-timezone-entry.h
@@ -33,7 +33,7 @@
 #define E_TIMEZONE_ENTRY_H
 
 #include <gtk/gtk.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
 /* Standard GObject macros */
 #define E_TYPE_TIMEZONE_ENTRY \
diff --git a/calendar/gui/e-week-view.c b/calendar/gui/e-week-view.c
index d6f430f2a1..47f03a9fa2 100644
--- a/calendar/gui/e-week-view.c
+++ b/calendar/gui/e-week-view.c
@@ -148,7 +148,7 @@ static void e_week_view_on_editing_started (EWeekView *week_view,
 static void e_week_view_on_editing_stopped (EWeekView *week_view,
 					    GnomeCanvasItem *item);
 static gboolean e_week_view_find_event_from_uid (EWeekView	  *week_view,
-						 ECal             *client,
+						 ECalClient             *client,
 						 const gchar	  *uid,
 						 const gchar      *rid,
 						 gint		  *event_num_return);
@@ -708,7 +708,6 @@ e_week_view_init (EWeekView *week_view)
 
 	gtk_widget_set_can_focus (GTK_WIDGET (week_view), TRUE);
 
-	week_view->query = NULL;
 	week_view->event_destroyed = FALSE;
 	week_view->events = g_array_new (FALSE, FALSE,
 					 sizeof (EWeekViewEvent));
@@ -875,13 +874,6 @@ e_week_view_dispose (GObject *object)
 		week_view->events = NULL;
 	}
 
-	if (week_view->query) {
-		g_signal_handlers_disconnect_matched (week_view->query, G_SIGNAL_MATCH_DATA,
-						      0, 0, NULL, NULL, week_view);
-		g_object_unref (week_view->query);
-		week_view->query = NULL;
-	}
-
 	if (week_view->small_font_desc) {
 		pango_font_description_free (week_view->small_font_desc);
 		week_view->small_font_desc = NULL;
@@ -3018,7 +3010,7 @@ tooltip_event_cb (GnomeCanvasItem *item,
 }
 
 static const gchar *
-get_comp_summary (ECal *ecal, icalcomponent *icalcomp, gboolean *free_text)
+get_comp_summary (ECalClient *client, icalcomponent *icalcomp, gboolean *free_text)
 {
 	const gchar *my_summary, *location;
 	const gchar *summary;
@@ -3026,7 +3018,7 @@ get_comp_summary (ECal *ecal, icalcomponent *icalcomp, gboolean *free_text)
 
 	g_return_val_if_fail (icalcomp != NULL && free_text != NULL, NULL);
 
-	my_summary = e_calendar_view_get_icalcomponent_summary (ecal, icalcomp, &my_free_text);
+	my_summary = e_calendar_view_get_icalcomponent_summary (client, icalcomp, &my_free_text);
 
 	location = icalcomponent_get_location (icalcomp);
 	if (location && *location) {
@@ -3172,7 +3164,7 @@ e_week_view_reshape_event_span (EWeekView *week_view,
 		if (free_text)
 			g_free ((gchar *) summary);
 
-		if (e_cal_get_static_capability (event->comp_data->client, CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
+		if (e_client_check_capability (E_CLIENT (event->comp_data->client), CAL_STATIC_CAPABILITY_HAS_UNACCEPTED_MEETING)
 				&& e_cal_util_component_has_attendee (event->comp_data->icalcomp)) {
 			set_text_as_bold (event, span);
 		}
@@ -3335,7 +3327,6 @@ e_week_view_start_editing_event (EWeekView *week_view,
 	ETextEventProcessor *event_processor = NULL;
 	ETextEventProcessorCommand command;
 	ECalModelComponent *comp_data;
-	gboolean read_only;
 
 	/* If we are already editing the event, just return. */
 	if (event_num == week_view->editing_event_num
@@ -3356,7 +3347,7 @@ e_week_view_start_editing_event (EWeekView *week_view,
 	span = &g_array_index (week_view->spans, EWeekViewEventSpan,
 			       event->spans_index + span_num);
 
-	if (!e_cal_is_read_only (event->comp_data->client, &read_only, NULL) || read_only)
+	if (e_client_is_readonly (E_CLIENT (event->comp_data->client)))
 		return FALSE;
 
 	/* If the event is not shown, don't try to edit it. */
@@ -3814,7 +3805,7 @@ e_week_view_change_event_time (EWeekView *week_view, time_t start_dt, time_t end
 	ECalComponent *comp;
 	ECalComponentDateTime date;
 	struct icaltimetype itt;
-	ECal *client;
+	ECalClient *client;
 	CalObjModType mod = CALOBJ_MOD_ALL;
 	GtkWindow *toplevel;
 
@@ -3924,7 +3915,7 @@ e_week_view_on_editing_stopped (EWeekView *week_view,
 	gchar *text = NULL;
 	ECalComponent *comp;
 	ECalComponentText summary;
-	ECal *client;
+	ECalClient *client;
 	const gchar *uid;
 	gboolean on_server;
 
@@ -4003,11 +3994,24 @@ e_week_view_on_editing_stopped (EWeekView *week_view,
 		e_cal_component_commit_sequence (comp);
 
 		if (!on_server) {
-			if (!e_cal_create_object (client, icalcomp, NULL, NULL))
-				g_message (G_STRLOC ": Could not create the object!");
-			else
+			gchar *uid = NULL;
+			GError *error = NULL;
+
+			if (!e_cal_client_create_object_sync (client, icalcomp, &uid, NULL, &error)) {
+				g_message (G_STRLOC ": Could not create the object! %s", error ? error->message : "Unknown error");
+				uid = NULL;
+			} else {
+				if (uid)
+					icalcomponent_set_uid (icalcomp, uid);
+
 				e_calendar_view_emit_user_created (
 					E_CALENDAR_VIEW (week_view));
+			}
+
+			if (uid)
+				g_free (uid);
+			if (error)
+				g_error_free (error);
 
 			/* we remove the object since we either got the update from the server or failed */
 			e_week_view_remove_event_cb (week_view, event_num, NULL);
@@ -4130,7 +4134,7 @@ e_week_view_find_event_from_item (EWeekView	  *week_view,
    see if any events with the uid exist. */
 static gboolean
 e_week_view_find_event_from_uid (EWeekView	  *week_view,
-				 ECal             *client,
+				 ECalClient       *client,
 				 const gchar	  *uid,
 				 const gchar      *rid,
 				 gint		  *event_num_return)
@@ -4256,7 +4260,7 @@ e_week_view_cursor_key_right (EWeekView *week_view)
 static gboolean
 e_week_view_add_new_event_in_selected_range (EWeekView *week_view, const gchar *initial_text)
 {
-	ECal *ecal;
+	ECalClient *client;
 	ECalModel *model;
 	ECalComponent *comp;
 	icalcomponent *icalcomp;
@@ -4266,14 +4270,13 @@ e_week_view_add_new_event_in_selected_range (EWeekView *week_view, const gchar *
 	time_t dtstart, dtend;
 	const gchar *uid;
 	AddEventData add_event_data;
-	gboolean read_only = TRUE;
 	EWeekViewEvent *wvevent;
 	EWeekViewEventSpan *span;
 
 	/* Check if the client is read only */
 	model = e_calendar_view_get_model (E_CALENDAR_VIEW (week_view));
-	ecal = e_cal_model_get_default_client (model);
-	if (!e_cal_is_read_only (ecal, &read_only, NULL) || read_only)
+	client = e_cal_model_get_default_client (model);
+	if (e_client_is_readonly (E_CLIENT (client)))
 		return FALSE;
 
 	/* Add a new event covering the selected range. */
@@ -4316,7 +4319,7 @@ e_week_view_add_new_event_in_selected_range (EWeekView *week_view, const gchar *
 	e_week_view_check_layout (week_view);
 	gtk_widget_queue_draw (week_view->main_canvas);
 
-	if (!e_week_view_find_event_from_uid (week_view, ecal, uid, NULL, &event_num)) {
+	if (!e_week_view_find_event_from_uid (week_view, client, uid, NULL, &event_num)) {
 		g_warning ("Couldn't find event to start editing.\n");
 		g_object_unref (comp);
 		return FALSE;
diff --git a/calendar/gui/e-week-view.h b/calendar/gui/e-week-view.h
index 3f65149f19..9525b87c02 100644
--- a/calendar/gui/e-week-view.h
+++ b/calendar/gui/e-week-view.h
@@ -185,9 +185,6 @@ struct _EWeekView {
 
 	GtkWidget *vscrollbar;
 
-	/* The query object */
-	ECalView *query;
-
 	/* The array of EWeekViewEvent elements. */
 	GArray *events;
 	gboolean events_sorted;
diff --git a/calendar/gui/gnome-cal.c b/calendar/gui/gnome-cal.c
index ffbc449584..78721bf214 100644
--- a/calendar/gui/gnome-cal.c
+++ b/calendar/gui/gnome-cal.c
@@ -38,7 +38,9 @@
 #include <libedataserver/e-categories.h>
 #include <libedataserver/e-url.h>
 #include <libedataserverui/e-passwords.h>
+#include <libedataserverui/e-client-utils.h>
 
+#include <libecal/e-cal-client-view.h>
 #include <libecal/e-cal-time-util.h>
 #include <widgets/menus/gal-view-factory-etable.h>
 #include <widgets/menus/gal-view-etable.h>
@@ -63,7 +65,6 @@
 #include "tag-calendar.h"
 #include "misc.h"
 #include "ea-calendar.h"
-#include "common/authentication.h"
 #include "e-memo-table.h"
 #include "e-task-table.h"
 
@@ -290,7 +291,7 @@ static void
 view_progress_cb (ECalModel *model,
                   const gchar *message,
                   gint percent,
-                  ECalSourceType type,
+                  ECalClientSourceType type,
                   GnomeCalendar *gcal)
 {
 	gcal_update_status_message (gcal, message, percent);
@@ -298,9 +299,8 @@ view_progress_cb (ECalModel *model,
 
 static void
 view_complete_cb (ECalModel *model,
-		  ECalendarStatus status,
-		  const gchar *error_msg,
-		  ECalSourceType type,
+		  const GError *error,
+		  ECalClientSourceType type,
 		  GnomeCalendar *gcal)
 {
 	gcal_update_status_message (gcal, NULL, -1);
@@ -752,11 +752,11 @@ ensure_dates_are_in_default_zone (GnomeCalendar *gcal,
 
 /* Callback used when the calendar query reports of an updated object */
 static void
-dn_e_cal_view_objects_added_cb (ECalView *query, GList *objects, gpointer data)
+dn_client_view_objects_added_cb (ECalClientView *view, const GSList *objects, gpointer data)
 {
 	GnomeCalendar *gcal;
 	GnomeCalendarPrivate *priv;
-	GList *l;
+	const GSList *l;
 
 	gcal = GNOME_CALENDAR (data);
 	priv = gcal->priv;
@@ -774,14 +774,14 @@ dn_e_cal_view_objects_added_cb (ECalView *query, GList *objects, gpointer data)
 
 		tag_calendar_by_comp (
 			priv->date_navigator, comp,
-			e_cal_view_get_client (query),
+			e_cal_client_view_get_client (view),
 			NULL, FALSE, TRUE, TRUE);
 		g_object_unref (comp);
 	}
 }
 
 static void
-dn_e_cal_view_objects_modified_cb (ECalView *query, GList *objects, gpointer data)
+dn_client_view_objects_modified_cb (ECalClientView *view, const GSList *objects, gpointer data)
 {
 	GnomeCalendar *gcal;
 
@@ -796,7 +796,7 @@ dn_e_cal_view_objects_modified_cb (ECalView *query, GList *objects, gpointer dat
 
 /* Callback used when the calendar query reports of a removed object */
 static void
-dn_e_cal_view_objects_removed_cb (ECalView *query, GList *ids, gpointer data)
+dn_client_view_objects_removed_cb (ECalClientView *view, const GSList *ids, gpointer data)
 {
 	GnomeCalendar *gcal;
 
@@ -808,17 +808,11 @@ dn_e_cal_view_objects_removed_cb (ECalView *query, GList *ids, gpointer data)
 
 /* Callback used when the calendar query is done */
 static void
-dn_e_cal_view_complete_cb (ECalView *query,
-                           ECalendarStatus status,
-                           const gchar *error_msg,
-                           gpointer data)
+dn_client_view_complete_cb (ECalClientView *query, const GError *error, gpointer data)
 {
 	/* FIXME Better error reporting */
-	if (status != E_CALENDAR_STATUS_OK)
-		g_warning (
-			G_STRLOC ": Query did not successfully complete, "
-			"code: %d (%s)", status, error_msg ? error_msg :
-			"Unknown error");
+	if (error)
+		g_debug ("%s: Query did not complete successfully: %s", G_STRFUNC, error->message);
 }
 
 ECalendarView *
@@ -1009,7 +1003,7 @@ get_date_navigator_range (GnomeCalendar *gcal, time_t *start_time, time_t *end_t
 
 /* Adjusts a given query sexp with the time range of the date navigator */
 static gchar *
-adjust_e_cal_view_sexp (GnomeCalendar *gcal, const gchar *sexp)
+adjust_client_view_sexp (GnomeCalendar *gcal, const gchar *sexp)
 {
 	time_t start_time, end_time;
 	gchar *start, *end;
@@ -1058,9 +1052,7 @@ free_dn_queries (GnomeCalendar *gcal)
 	for (l = priv->dn_queries; l != NULL; l = l->next) {
 		if (!l->data)
 			continue;
-		g_signal_handlers_disconnect_matched (
-			l->data, G_SIGNAL_MATCH_DATA,
-			0, 0, NULL, NULL, gcal);
+		g_signal_handlers_disconnect_matched (l->data, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, gcal);
 		g_object_unref (l->data);
 	}
 
@@ -1075,7 +1067,7 @@ update_query_async (struct _date_query_msg *msg)
 {
 	GnomeCalendar *gcal = msg->gcal;
 	GnomeCalendarPrivate *priv;
-	ECalView *new_query;
+	ECalClientView *new_view;
 	gchar *real_sexp;
 	GList *list, *iter;
 
@@ -1086,7 +1078,7 @@ update_query_async (struct _date_query_msg *msg)
 
 	g_return_if_fail (priv->sexp != NULL);
 
-	real_sexp = adjust_e_cal_view_sexp (gcal, priv->sexp);
+	real_sexp = adjust_client_view_sexp (gcal, priv->sexp);
 	if (!real_sexp) {
 		return; /* No time range is set, so don't start a query */
 	}
@@ -1096,19 +1088,19 @@ update_query_async (struct _date_query_msg *msg)
 
 	/* create queries for each loaded client */
 	for (iter = list; iter != NULL; iter = iter->next) {
-		ECal *client = E_CAL (iter->data);
+		ECalClient *client = E_CAL_CLIENT (iter->data);
 		GError *error = NULL;
 		gint tries = 0;
 
 		/* don't create queries for clients not loaded yet */
-		if (e_cal_get_load_state (client) != E_CAL_LOAD_LOADED)
+		if (!e_client_is_opened (E_CLIENT (client)))
 			continue;
 
-try_again:
-		new_query = NULL;
-		if (!e_cal_get_query (client, real_sexp, &new_query, &error)) {
+ try_again:
+		new_view = NULL;
+		if (!e_cal_client_get_view_sync (client, real_sexp, &new_view, NULL, &error)) {
 			/* If calendar is busy try again for 3 times. */
-			if (error->code == E_CALENDAR_STATUS_BUSY && tries != 10) {
+			if (g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_BUSY) && tries != 10) {
 				tries++;
 				/*TODO chose an optimal value */
 				g_usleep (500);
@@ -1117,24 +1109,28 @@ try_again:
 				goto try_again;
 			}
 
-			g_warning (G_STRLOC ": Could not create the query: %s ", error->message);
+			g_warning (G_STRLOC ": Could not create the view: %s ", error->message);
 			g_clear_error (&error);
 
 			continue;
 		}
 
-		g_signal_connect (new_query, "objects_added",
-				  G_CALLBACK (dn_e_cal_view_objects_added_cb), gcal);
-		g_signal_connect (new_query, "objects_modified",
-				  G_CALLBACK (dn_e_cal_view_objects_modified_cb), gcal);
-		g_signal_connect (new_query, "objects_removed",
-				  G_CALLBACK (dn_e_cal_view_objects_removed_cb), gcal);
-		g_signal_connect (new_query, "view_complete",
-				  G_CALLBACK (dn_e_cal_view_complete_cb), gcal);
+		g_signal_connect (new_view, "objects-added",
+				  G_CALLBACK (dn_client_view_objects_added_cb), gcal);
+		g_signal_connect (new_view, "objects-modified",
+				  G_CALLBACK (dn_client_view_objects_modified_cb), gcal);
+		g_signal_connect (new_view, "objects-removed",
+				  G_CALLBACK (dn_client_view_objects_removed_cb), gcal);
+		g_signal_connect (new_view, "complete",
+				  G_CALLBACK (dn_client_view_complete_cb), gcal);
 
 		g_mutex_lock (priv->dn_query_lock);
-		priv->dn_queries = g_list_append (priv->dn_queries, new_query);
-		e_cal_view_start (new_query);
+		priv->dn_queries = g_list_append (priv->dn_queries, new_view);
+		e_cal_client_view_start (new_view, &error);
+		if (error) {
+			g_debug ("%s: Failed to start view: %s", G_STRFUNC, error->message);
+			g_clear_error (&error);
+		}
 		g_mutex_unlock (priv->dn_query_lock);
 	}
 
@@ -2221,15 +2217,17 @@ gnome_calendar_purge (GnomeCalendar *gcal, time_t older_than)
 	/* FIXME Confirm expunge */
 	clients = e_cal_model_get_client_list (gnome_calendar_get_model (gcal));
 	for (l = clients; l != NULL; l = l->next) {
-		ECal *client = l->data;
-		GList *objects, *m;
-		gboolean read_only;
+		ECalClient *client = l->data;
+		GSList *objects, *m;
+		GError *error = NULL;
 
-		if (!e_cal_is_read_only (client, &read_only, NULL) || read_only)
+		if (e_client_is_readonly (E_CLIENT (client)))
 			continue;
 
-		if (!e_cal_get_object_list (client, sexp, &objects, NULL)) {
-			g_warning (G_STRLOC ": Could not get the objects");
+		if (!e_cal_client_get_object_list_sync (client, sexp, &objects, NULL, &error)) {
+			g_warning (G_STRLOC ": Could not get the objects: %s", error ? error->message : "Unknown error");
+			if (error)
+				g_error_free (error);
 
 			continue;
 		}
@@ -2240,16 +2238,15 @@ gnome_calendar_purge (GnomeCalendar *gcal, time_t older_than)
 			/* FIXME write occur-before and occur-after
 			 * sexp funcs so we don't have to use the max
 			 * gint */
-			if (!e_cal_get_static_capability (
-				client, CAL_STATIC_CAPABILITY_RECURRENCES_NO_MASTER)) {
+			if (!e_cal_client_check_recurrences_no_master (client)) {
 				struct purge_data pd;
 
 				pd.remove = TRUE;
 				pd.older_than = older_than;
 
-				e_cal_generate_instances_for_object (client, m->data,
+				e_cal_client_generate_instances_for_object (client, m->data,
 							     older_than, G_MAXINT32,
-							     (ECalRecurInstanceFn) check_instance_cb,
+							     check_instance_cb,
 							     &pd);
 
 				remove = pd.remove;
@@ -2270,23 +2267,21 @@ gnome_calendar_purge (GnomeCalendar *gcal, time_t older_than)
 					if (!icaltime_is_null_time (recur_id) )
 						rid = icaltime_as_ical_string_r (recur_id);
 
-					e_cal_remove_object_with_mod (
-						client, uid, rid,
-						CALOBJ_MOD_ALL, &error);
+					e_cal_client_remove_object_sync (client, uid, rid, CALOBJ_MOD_ALL, NULL, &error);
 					g_free (rid);
 				} else {
-					e_cal_remove_object (client, uid, &error);
+					e_cal_client_remove_object_sync (client, uid, NULL, CALOBJ_MOD_THIS, NULL, &error);
 				}
 
 				if (error) {
-					g_warning ("Unable to purge events %s \n", error->message);
+					g_debug ("%s: Unable to purge events: %s", G_STRFUNC, error->message);
 					g_error_free (error);
 				}
 			}
 		}
 
-		g_list_foreach (objects, (GFunc) icalcomponent_free, NULL);
-		g_list_free (objects);
+		g_slist_foreach (objects, (GFunc) icalcomponent_free, NULL);
+		g_slist_free (objects);
 	}
 
 	g_list_free (clients);
diff --git a/calendar/gui/gnome-cal.h b/calendar/gui/gnome-cal.h
index 92f6f3ad36..6657b8efe3 100644
--- a/calendar/gui/gnome-cal.h
+++ b/calendar/gui/gnome-cal.h
@@ -30,7 +30,7 @@
 #include <time.h>
 #include <gtk/gtk.h>
 #include <misc/e-calendar.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
 #include "e-cal-model.h"
 
diff --git a/calendar/gui/itip-utils.c b/calendar/gui/itip-utils.c
index 4d56645b38..d095d4ecbe 100644
--- a/calendar/gui/itip-utils.c
+++ b/calendar/gui/itip-utils.c
@@ -157,14 +157,14 @@ itip_address_is_user (const gchar *address)
 
 gboolean
 itip_organizer_is_user (ECalComponent *comp,
-                        ECal *client)
+                        ECalClient *cal_client)
 {
-	return itip_organizer_is_user_ex (comp, client, FALSE);
+	return itip_organizer_is_user_ex (comp, cal_client, FALSE);
 }
 
 gboolean
 itip_organizer_is_user_ex (ECalComponent *comp,
-                           ECal *client,
+                           ECalClient *cal_client,
                            gboolean skip_cap_test)
 {
 	ECalComponentOrganizer organizer;
@@ -172,8 +172,8 @@ itip_organizer_is_user_ex (ECalComponent *comp,
 	gboolean user_org = FALSE;
 
 	if (!e_cal_component_has_organizer (comp) ||
-		(!skip_cap_test && e_cal_get_static_capability (
-		client, CAL_STATIC_CAPABILITY_NO_ORGANIZER)))
+		(!skip_cap_test && e_client_check_capability (
+		E_CLIENT (cal_client), CAL_STATIC_CAPABILITY_NO_ORGANIZER)))
 		return FALSE;
 
 	e_cal_component_get_organizer (comp, &organizer);
@@ -181,11 +181,10 @@ itip_organizer_is_user_ex (ECalComponent *comp,
 
 		strip = itip_strip_mailto (organizer.value);
 
-		if (e_cal_get_static_capability (
-			client, CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS)) {
+		if (e_client_check_capability (E_CLIENT (cal_client), CAL_STATIC_CAPABILITY_ORGANIZER_NOT_EMAIL_ADDRESS)) {
 			gchar *email = NULL;
 
-			if (e_cal_get_cal_address (client, &email, NULL) &&
+			if (e_client_get_backend_property_sync (E_CLIENT (cal_client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &email, NULL, NULL) &&
 				!g_ascii_strcasecmp (email, strip)) {
 				g_free (email);
 
@@ -204,15 +203,15 @@ itip_organizer_is_user_ex (ECalComponent *comp,
 
 gboolean
 itip_sentby_is_user (ECalComponent *comp,
-                     ECal *client)
+                     ECalClient *cal_client)
 {
 	ECalComponentOrganizer organizer;
 	const gchar *strip;
 	gboolean user_sentby = FALSE;
 
 	if (!e_cal_component_has_organizer (comp) ||
-		e_cal_get_static_capability (
-		client, CAL_STATIC_CAPABILITY_NO_ORGANIZER))
+		e_client_check_capability (
+		E_CLIENT (cal_client), CAL_STATIC_CAPABILITY_NO_ORGANIZER))
 		return FALSE;
 
 	e_cal_component_get_organizer (comp, &organizer);
@@ -277,7 +276,7 @@ html_new_lines_for (const gchar *string)
 
 gchar *
 itip_get_comp_attendee (ECalComponent *comp,
-                        ECal *client)
+                        ECalClient *cal_client)
 {
 	GSList *attendees;
 	EAccountList *al;
@@ -289,8 +288,8 @@ itip_get_comp_attendee (ECalComponent *comp,
 	e_cal_component_get_attendee_list (comp, &attendees);
 	al = e_get_account_list ();
 
-	if (client)
-		e_cal_get_cal_address (client, &address, NULL);
+	if (cal_client)
+		e_client_get_backend_property_sync (E_CLIENT (cal_client), CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS, &address, NULL, NULL);
 
 	if (address && *address) {
 		attendee = get_attendee (attendees, address);
@@ -386,7 +385,7 @@ get_label (struct icaltimetype *tt,
 typedef struct {
 	GHashTable *tzids;
 	icalcomponent *icomp;
-	ECal *client;
+	ECalClient *client;
 	icalcomponent *zones;
 } ItipUtilTZData;
 
@@ -409,7 +408,7 @@ foreach_tzid_callback (icalparameter *param, gpointer data)
 	if (zone == NULL)
 		zone = icaltimezone_get_builtin_timezone_from_tzid (tzid);
 	if (zone == NULL && tz_data->client != NULL)
-		e_cal_get_timezone (tz_data->client, tzid, &zone, NULL);
+		e_cal_client_get_timezone_sync (tz_data->client, tzid, &zone, NULL, NULL);
 	if (zone == NULL)
 		return;
 
@@ -426,7 +425,7 @@ foreach_tzid_callback (icalparameter *param, gpointer data)
 static icalcomponent *
 comp_toplevel_with_zones (ECalComponentItipMethod method,
                           ECalComponent *comp,
-                          ECal *client,
+                          ECalClient *cal_client,
                           icalcomponent *zones)
 {
 	icalcomponent *top_level, *icomp;
@@ -446,7 +445,7 @@ comp_toplevel_with_zones (ECalComponentItipMethod method,
 
 	tz_data.tzids = g_hash_table_new (g_str_hash, g_str_equal);
 	tz_data.icomp = top_level;
-	tz_data.client = client;
+	tz_data.client = cal_client;
 	tz_data.zones = zones;
 	icalcomponent_foreach_tzid (icomp, foreach_tzid_callback, &tz_data);
 	g_hash_table_destroy (tz_data.tzids);
@@ -457,10 +456,10 @@ comp_toplevel_with_zones (ECalComponentItipMethod method,
 }
 
 static gboolean
-users_has_attendee (GList *users,
+users_has_attendee (const GSList *users,
                     const gchar *address)
 {
-	GList *l;
+	const GSList *l;
 
 	for (l = users; l != NULL; l = l->next) {
 		if (!g_ascii_strcasecmp (address, l->data))
@@ -525,7 +524,7 @@ comp_from (ECalComponentItipMethod method,
 static EDestination **
 comp_to_list (ECalComponentItipMethod method,
               ECalComponent *comp,
-              GList *users,
+              const GSList *users,
               gboolean reply_all,
               const GSList *only_attendees)
 {
@@ -703,7 +702,7 @@ comp_to_list (ECalComponentItipMethod method,
 		break;
 	case E_CAL_COMPONENT_METHOD_PUBLISH:
 		if (users) {
-			GList *list;
+			const GSList *list;
 
 			array = g_ptr_array_new ();
 
@@ -945,19 +944,19 @@ comp_description (ECalComponent *comp,
 static gboolean
 comp_server_send (ECalComponentItipMethod method,
                   ECalComponent *comp,
-                  ECal *client,
+                  ECalClient *cal_client,
                   icalcomponent *zones,
-                  GList **users)
+                  GSList **users)
 {
 	icalcomponent *top_level, *returned_icalcomp = NULL;
 	gboolean retval = TRUE;
 	GError *error = NULL;
 
-	top_level = comp_toplevel_with_zones (method, comp, client, zones);
-	if (!e_cal_send_objects (client, top_level, users, &returned_icalcomp, &error)) {
+	top_level = comp_toplevel_with_zones (method, comp, cal_client, zones);
+	if (!e_cal_client_send_objects_sync (cal_client, top_level, users, &returned_icalcomp, NULL, &error)) {
 		/* FIXME Really need a book problem status code */
-		if (error->code != E_CALENDAR_STATUS_OK) {
-			if (error->code == E_CALENDAR_STATUS_OBJECT_ID_ALREADY_EXISTS) {
+		if (error) {
+			if (g_error_matches (error, E_CAL_CLIENT_ERROR, E_CAL_CLIENT_ERROR_OBJECT_ID_ALREADY_EXISTS)) {
 				e_notice (
 					NULL, GTK_MESSAGE_ERROR,
 					_("Unable to book a resource, the "
@@ -1051,7 +1050,7 @@ comp_limit_attendees (ECalComponent *comp)
 }
 
 static void
-comp_sentby (ECalComponent *comp, ECal *client)
+comp_sentby (ECalComponent *comp, ECalClient *cal_client)
 {
 	ECalComponentOrganizer organizer;
 	GSList * attendees, *l;
@@ -1073,7 +1072,7 @@ comp_sentby (ECalComponent *comp, ECal *client)
 	}
 
 	e_cal_component_get_attendee_list (comp, &attendees);
-	user = itip_get_comp_attendee (comp, client);
+	user = itip_get_comp_attendee (comp, cal_client);
 	for (l = attendees; l; l = l->next) {
 		ECalComponentAttendee *a = l->data;
 
@@ -1086,8 +1085,7 @@ comp_sentby (ECalComponent *comp, ECal *client)
 		}
 	}
 
-	if (!itip_organizer_is_user (comp, client) &&
-	    !itip_sentby_is_user (comp, client)) {
+	if (!itip_organizer_is_user (comp, cal_client) && !itip_sentby_is_user (comp, cal_client)) {
 		EAccount *a = e_get_default_account ();
 
 		organizer.value = g_strdup (organizer.value);
@@ -1213,7 +1211,7 @@ strip_x_microsoft_props (ECalComponent *comp)
 static ECalComponent *
 comp_compliant (ECalComponentItipMethod method,
                 ECalComponent *comp,
-                ECal *client,
+                ECalClient *client,
                 icalcomponent *zones,
                 icaltimezone *default_zone,
                 gboolean strip_alarms)
@@ -1252,7 +1250,7 @@ comp_compliant (ECalComponentItipMethod method,
 					from_zone = icaltimezone_get_builtin_timezone_from_tzid (dt.tzid);
 				if (from_zone == NULL && client != NULL)
 					/* FIXME Error checking */
-					e_cal_get_timezone (client, dt.tzid, &from_zone, NULL);
+					e_cal_client_get_timezone_sync (client, dt.tzid, &from_zone, NULL, NULL);
 			}
 
 			to_zone = icaltimezone_get_utc_timezone ();
@@ -1420,7 +1418,7 @@ find_enabled_account (EAccountList *accounts,
 static void
 setup_from (ECalComponentItipMethod method,
             ECalComponent *comp,
-            ECal *client,
+            ECalClient *cal_client,
             EComposerHeaderTable *table)
 {
 	EAccountList *accounts;
@@ -1430,7 +1428,7 @@ setup_from (ECalComponentItipMethod method,
 		EAccount *account = NULL;
 
 		/* always use organizer's email when user is an organizer */
-		if (itip_organizer_is_user (comp, client)) {
+		if (itip_organizer_is_user (comp, cal_client)) {
 			ECalComponentOrganizer organizer = {0};
 
 			e_cal_component_get_organizer (comp, &organizer);
@@ -1458,10 +1456,10 @@ setup_from (ECalComponentItipMethod method,
 gboolean
 itip_send_comp (ECalComponentItipMethod method,
                 ECalComponent *send_comp,
-                ECal *client,
+                ECalClient *cal_client,
                 icalcomponent *zones,
                 GSList *attachments_list,
-                GList *users,
+                GSList *users,
                 gboolean strip_alarms,
                 gboolean only_new_attendees)
 {
@@ -1490,29 +1488,29 @@ itip_send_comp (ECalComponentItipMethod method,
 		shell_settings, "cal-use-24-hour-format");
 
 	/* check whether backend could handle auto-saving requests/updates */
-	if (method != E_CAL_COMPONENT_METHOD_PUBLISH && e_cal_get_save_schedules (client))
+	if (method != E_CAL_COMPONENT_METHOD_PUBLISH && e_cal_client_check_save_schedules (cal_client))
 		return TRUE;
 
 	/* Give the server a chance to manipulate the comp */
 	if (method != E_CAL_COMPONENT_METHOD_PUBLISH) {
-		if (!comp_server_send (method, send_comp, client, zones, &users))
+		if (!comp_server_send (method, send_comp, cal_client, zones, &users))
 			goto cleanup;
 	}
 
 	/* check whether backend could handle sending requests/updates */
 	if (method != E_CAL_COMPONENT_METHOD_PUBLISH &&
-		e_cal_get_static_capability (client,
+		e_client_check_capability (E_CLIENT (cal_client),
 		CAL_STATIC_CAPABILITY_CREATE_MESSAGES)) {
 		if (users) {
-			g_list_foreach (users, (GFunc) g_free, NULL);
-			g_list_free (users);
+			g_slist_foreach (users, (GFunc) g_free, NULL);
+			g_slist_free (users);
 		}
 		return TRUE;
 	}
 
 	/* Tidy up the comp */
 	comp = comp_compliant (
-		method, send_comp, client, zones, default_zone, strip_alarms);
+		method, send_comp, cal_client, zones, default_zone, strip_alarms);
 
 	if (comp == NULL)
 		goto cleanup;
@@ -1536,7 +1534,7 @@ itip_send_comp (ECalComponentItipMethod method,
 	composer = e_msg_composer_new (shell);
 	table = e_msg_composer_get_header_table (composer);
 
-	setup_from (method, send_comp, client, table);
+	setup_from (method, send_comp, cal_client, table);
 	e_composer_header_table_set_subject (table, subject);
 	e_composer_header_table_set_destinations_to (table, destinations);
 
@@ -1545,7 +1543,7 @@ itip_send_comp (ECalComponentItipMethod method,
 	/* Content type */
 	content_type = comp_content_type (comp, method);
 
-	top_level = comp_toplevel_with_zones (method, comp, client, zones);
+	top_level = comp_toplevel_with_zones (method, comp, cal_client, zones);
 	ical_string = icalcomponent_as_ical_string_r (top_level);
 
 	if (e_cal_component_get_vtype (comp) == E_CAL_COMPONENT_EVENT) {
@@ -1595,8 +1593,8 @@ cleanup:
 		icalcomponent_free (top_level);
 
 	if (users) {
-		g_list_foreach (users, (GFunc) g_free, NULL);
-		g_list_free (users);
+		g_slist_foreach (users, (GFunc) g_free, NULL);
+		g_slist_free (users);
 	}
 
 	g_free (content_type);
@@ -1609,7 +1607,7 @@ cleanup:
 gboolean
 reply_to_calendar_comp (ECalComponentItipMethod method,
                         ECalComponent *send_comp,
-                        ECal *client,
+                        ECalClient *cal_client,
                         gboolean reply_all,
                         icalcomponent *zones,
                         GSList *attachments_list)
@@ -1622,7 +1620,7 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 	ECalComponent *comp = NULL;
 	icalcomponent *top_level = NULL;
 	icaltimezone *default_zone;
-	GList *users = NULL;
+	GSList *users = NULL;
 	gchar *subject = NULL;
 	gchar *ical_string = NULL;
 	gboolean retval = FALSE;
@@ -1636,7 +1634,7 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 
 	/* Tidy up the comp */
 	comp = comp_compliant (
-		method, send_comp, client, zones, default_zone, TRUE);
+		method, send_comp, cal_client, zones, default_zone, TRUE);
 	if (comp == NULL)
 		goto cleanup;
 
@@ -1649,13 +1647,13 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 	composer = e_msg_composer_new (shell);
 	table = e_msg_composer_get_header_table (composer);
 
-	setup_from (method, send_comp, client, table);
+	setup_from (method, send_comp, cal_client, table);
 	e_composer_header_table_set_subject (table, subject);
 	e_composer_header_table_set_destinations_to (table, destinations);
 
 	e_destination_freev (destinations);
 
-	top_level = comp_toplevel_with_zones (method, comp, client, zones);
+	top_level = comp_toplevel_with_zones (method, comp, cal_client, zones);
 	ical_string = icalcomponent_as_ical_string_r (top_level);
 
 	if (e_cal_component_get_vtype (comp) == E_CAL_COMPONENT_EVENT) {
@@ -1703,12 +1701,15 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 		e_cal_component_get_dtstart (comp, &dtstart);
 		if (dtstart.value) {
 			start_zone = icaltimezone_get_builtin_timezone_from_tzid (dtstart.tzid);
-			if (!start_zone) {
-				if (!e_cal_get_timezone (client, dtstart.tzid, &start_zone, NULL))
-					g_warning (
-						"Couldn't get timezone from "
-						"server: %s", dtstart.tzid ?
-						dtstart.tzid : "");
+			if (!start_zone && dtstart.tzid) {
+				GError *error = NULL;
+
+				if (!e_cal_client_get_timezone_sync (cal_client, dtstart.tzid, &start_zone, NULL, &error))
+					g_debug ("%s: Couldn't get timezone '%s' from server: %s", G_STRFUNC,
+						dtstart.tzid ? dtstart.tzid : "", error ? error->message : "Unknown error");
+
+				if (error)
+					g_error_free (error);
 			}
 
 			if (!start_zone || dtstart.value->is_date)
@@ -1767,8 +1768,8 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 		icalcomponent_free (top_level);
 
 	if (users) {
-		g_list_foreach (users, (GFunc) g_free, NULL);
-		g_list_free (users);
+		g_slist_foreach (users, (GFunc) g_free, NULL);
+		g_slist_free (users);
 	}
 
 	g_free (subject);
@@ -1778,11 +1779,11 @@ reply_to_calendar_comp (ECalComponentItipMethod method,
 
 gboolean
 itip_publish_begin (ECalComponent *pub_comp,
-                    ECal *client,
+                    ECalClient *cal_client,
                     gboolean cloned,
                     ECalComponent **clone)
 {
-	icalcomponent *icomp =NULL, *icomp_clone = NULL;
+	icalcomponent *icomp = NULL, *icomp_clone = NULL;
 	icalproperty *prop;
 
 	if (e_cal_component_get_vtype (pub_comp) == E_CAL_COMPONENT_FREEBUSY) {
@@ -1920,7 +1921,7 @@ comp_fb_normalize (icalcomponent *icomp)
 }
 
 gboolean
-itip_publish_comp (ECal *client,
+itip_publish_comp (ECalClient *cal_client,
                    gchar *uri,
                    gchar *username,
                    gchar *password,
diff --git a/calendar/gui/itip-utils.h b/calendar/gui/itip-utils.h
index c5718894fc..6da2519d07 100644
--- a/calendar/gui/itip-utils.h
+++ b/calendar/gui/itip-utils.h
@@ -22,7 +22,7 @@
 
 #include <libical/ical.h>
 #include <string.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 #include <libecal/e-cal-component.h>
 #include <libedataserver/e-account-list.h>
 
@@ -53,35 +53,35 @@ gchar **	itip_get_user_identities	(void);
 gchar *		itip_get_fallback_identity	(void);
 gboolean	itip_address_is_user		(const gchar *address);
 gboolean	itip_organizer_is_user		(ECalComponent *comp,
-						 ECal *client);
+						 ECalClient *cal_client);
 gboolean	itip_organizer_is_user_ex	(ECalComponent *comp,
-						 ECal *client,
+						 ECalClient *cal_client,
 						 gboolean skip_cap_test);
 gboolean	itip_sentby_is_user		(ECalComponent *comp,
-						 ECal *client);
+						 ECalClient *cal_client);
 const gchar *	itip_strip_mailto		(const gchar *address);
 gchar *		itip_get_comp_attendee		(ECalComponent *comp,
-						 ECal *client);
+						 ECalClient *cal_client);
 gboolean	itip_send_comp			(ECalComponentItipMethod method,
 						 ECalComponent *comp,
-						 ECal *client,
+						 ECalClient *cal_client,
 						 icalcomponent *zones,
 						 GSList *attachments_list,
-						 GList *users,
+						 GSList *users,
 						 gboolean strip_alarms,
 						 gboolean only_new_attendees);
-gboolean	itip_publish_comp		(ECal *client,
+gboolean	itip_publish_comp		(ECalClient *cal_client,
 						 gchar *uri,
 						 gchar *username,
 						 gchar *password,
 						 ECalComponent **pub_comp);
 gboolean	itip_publish_begin		(ECalComponent *pub_comp,
-						 ECal *client,
+						 ECalClient *cal_client,
 						 gboolean cloned,
 						 ECalComponent **clone);
 gboolean	reply_to_calendar_comp		(ECalComponentItipMethod method,
 						 ECalComponent *send_comp,
-						 ECal *client,
+						 ECalClient *cal_client,
 						 gboolean reply_all,
 						 icalcomponent *zones,
 						 GSList *attachments_list);
diff --git a/calendar/gui/print.c b/calendar/gui/print.c
index a4d4fd61c8..702f281b5a 100644
--- a/calendar/gui/print.c
+++ b/calendar/gui/print.c
@@ -57,7 +57,7 @@ typedef struct PrintCompItem PrintCompItem;
 typedef struct PrintCalItem PrintCalItem;
 
 struct PrintCompItem {
-	ECal *client;
+	ECalClient *client;
 	ECalComponent *comp;
 	icaltimezone *zone;
 	gboolean use_24_hour_format;
@@ -2924,18 +2924,22 @@ write_label_piece (time_t t,
 }
 
 static icaltimezone*
-get_zone_from_tzid (ECal *client, const gchar *tzid)
+get_zone_from_tzid (ECalClient *client, const gchar *tzid)
 {
 	icaltimezone *zone;
 
 	/* Note that the timezones may not be on the server, so we try to get
 	   the builtin timezone with the TZID first. */
 	zone = icaltimezone_get_builtin_timezone_from_tzid (tzid);
-	if (!zone) {
-		if (!e_cal_get_timezone (client, tzid, &zone, NULL))
-			/* FIXME: Handle error better. */
-			g_warning ("Couldn't get timezone from server: %s",
-				   tzid ? tzid : "");
+	if (!zone && tzid) {
+		GError *error = NULL;
+
+		if (!e_cal_client_get_timezone_sync (client, tzid, &zone, NULL, &error)) {
+			g_warning ("Couldn't get timezone '%s' from server: %s",
+				   tzid ? tzid : "", error ? error->message : "Unknown error");
+			if (error)
+				g_error_free (error);
+		}
 	}
 
 	return zone;
@@ -2944,7 +2948,7 @@ get_zone_from_tzid (ECal *client, const gchar *tzid)
 static void
 print_date_label (GtkPrintContext *context,
                   ECalComponent *comp,
-                  ECal *client,
+                  ECalClient *client,
                   icaltimezone *zone,
                   gboolean use_24_hour_format,
                   gdouble left,
@@ -3137,7 +3141,7 @@ print_comp_draw_real (GtkPrintOperation *operation,
 {
 	GtkPageSetup *setup;
 	PangoFontDescription *font;
-	ECal *client;
+	ECalClient *client;
 	ECalComponent *comp;
 	ECalComponentVType vtype;
 	ECalComponentText text;
@@ -3413,7 +3417,7 @@ print_comp_begin_print (GtkPrintOperation *operation,
 
 void
 print_comp (ECalComponent *comp,
-            ECal *client,
+            ECalClient *cal_client,
             icaltimezone *zone,
             gboolean use_24_hour_format,
             GtkPrintOperationAction action)
@@ -3424,7 +3428,7 @@ print_comp (ECalComponent *comp,
 	g_return_if_fail (E_IS_CAL_COMPONENT (comp));
 
 	pci.comp = comp;
-	pci.client = client;
+	pci.client = cal_client;
 	pci.zone = zone;
 	pci.use_24_hour_format = use_24_hour_format;
 
diff --git a/calendar/gui/print.h b/calendar/gui/print.h
index 85397b0356..b81bcfa36c 100644
--- a/calendar/gui/print.h
+++ b/calendar/gui/print.h
@@ -40,7 +40,7 @@ void		print_calendar			(GnomeCalendar *gcal,
 						 GtkPrintOperationAction action,
 						 time_t start);
 void		print_comp			(ECalComponent *comp,
-						 ECal *client,
+						 ECalClient *cal_client,
 						 icaltimezone *zone,
 						 gboolean use_24_hour_format,
 						 GtkPrintOperationAction action);
diff --git a/calendar/gui/tag-calendar.c b/calendar/gui/tag-calendar.c
index 0af271e1de..dff1285587 100644
--- a/calendar/gui/tag-calendar.c
+++ b/calendar/gui/tag-calendar.c
@@ -151,18 +151,18 @@ get_recur_events_italic (void)
  **/
 void
 tag_calendar_by_client (ECalendar *ecal,
-                        ECal *client)
+                        ECalClient *client)
 {
 	struct calendar_tag_closure c;
 
 	g_return_if_fail (E_IS_CALENDAR (ecal));
-	g_return_if_fail (E_IS_CAL (client));
+	g_return_if_fail (E_IS_CAL_CLIENT (client));
 
 	/* If the ECalendar isn't visible, we just return. */
 	if (!gtk_widget_get_visible (GTK_WIDGET (ecal)))
 		return;
 
-	if (e_cal_get_load_state (client) != E_CAL_LOAD_LOADED)
+	if (!e_client_is_opened (E_CLIENT (client)))
 		return;
 
 	if (!prepare_tag (ecal, &c, NULL, TRUE))
@@ -171,7 +171,7 @@ tag_calendar_by_client (ECalendar *ecal,
 	c.skip_transparent_events = TRUE;
 	c.recur_events_italic = get_recur_events_italic ();
 
-	e_cal_generate_instances (
+	e_cal_client_generate_instances (
 		client, c.start_time, c.end_time, tag_calendar_cb, &c);
 }
 
@@ -182,19 +182,25 @@ static icaltimezone*
 resolve_tzid_cb (const gchar *tzid,
                  gpointer data)
 {
-	ECal *client;
+	ECalClient *client;
 	icaltimezone *zone = NULL;
 
-	g_return_val_if_fail (E_IS_CAL (data), NULL);
+	g_return_val_if_fail (E_IS_CAL_CLIENT (data), NULL);
 
-	client = E_CAL (data);
+	client = E_CAL_CLIENT (data);
 
 	/* Try to find the builtin timezone first. */
 	zone = icaltimezone_get_builtin_timezone_from_tzid (tzid);
 
-	if (!zone) {
+	if (!zone && tzid) {
 		/* FIXME: Handle errors. */
-		e_cal_get_timezone (client, tzid, &zone, NULL);
+		GError *error = NULL;
+
+		if (!e_cal_client_get_timezone_sync (client, tzid, &zone, NULL, &error)) {
+			g_debug ("%s: Failed to get timezone '%s': %s", G_STRFUNC, tzid, error->message);
+			if (error)
+				g_error_free (error);
+		}
 	}
 
 	return zone;
@@ -217,7 +223,7 @@ resolve_tzid_cb (const gchar *tzid,
 void
 tag_calendar_by_comp (ECalendar *ecal,
                       ECalComponent *comp,
-                      ECal *client,
+                      ECalClient *client,
                       icaltimezone *display_zone,
                       gboolean clear_first,
                       gboolean comp_is_on_server,
@@ -239,7 +245,7 @@ tag_calendar_by_comp (ECalendar *ecal,
 	c.recur_events_italic = can_recur_events_italic && get_recur_events_italic ();
 
 	if (comp_is_on_server)
-		e_cal_generate_instances_for_object (
+		e_cal_client_generate_instances_for_object (
 			client, e_cal_component_get_icalcomponent (comp),
 			c.start_time, c.end_time, tag_calendar_cb, &c);
 	else
diff --git a/calendar/gui/tag-calendar.h b/calendar/gui/tag-calendar.h
index ebf996173e..2dc5bff176 100644
--- a/calendar/gui/tag-calendar.h
+++ b/calendar/gui/tag-calendar.h
@@ -28,11 +28,11 @@
 #define TAG_CALENDAR_H
 
 #include <misc/e-calendar.h>
-#include <libecal/e-cal.h>
+#include <libecal/e-cal-client.h>
 
-void tag_calendar_by_client (ECalendar *ecal, ECal *client);
+void tag_calendar_by_client (ECalendar *ecal, ECalClient *client);
 void tag_calendar_by_comp (ECalendar *ecal, ECalComponent *comp,
-			   ECal *client, icaltimezone *display_zone,
+			   ECalClient *client, icaltimezone *display_zone,
 			   gboolean clear_first, gboolean comp_is_on_server,
 			   gboolean can_recur_events_italic);