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[evolution-data-server/account-mgmt: 24/38] Add an ESource extension for the contacts backend.

commit 332d0e5c50c922866dbf516b786f95e4cff8c325
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue Nov 23 08:35:40 2010 -0500

    Add an ESource extension for the contacts backend.

 calendar/backends/contacts/Makefile.am             |    4 +-
 .../contacts/e-cal-backend-contacts-factory.c      |    2 +
 .../backends/contacts/e-cal-backend-contacts.c     |  610 ++++----------------
 calendar/backends/contacts/e-source-contacts.c     |  139 +++++
 calendar/backends/contacts/e-source-contacts.h     |   70 +++
 5 files changed, 317 insertions(+), 508 deletions(-)
---
diff --git a/calendar/backends/contacts/Makefile.am b/calendar/backends/contacts/Makefile.am
index bb2d290..328c269 100644
--- a/calendar/backends/contacts/Makefile.am
+++ b/calendar/backends/contacts/Makefile.am
@@ -17,7 +17,9 @@ libecalbackendcontacts_la_CPPFLAGS = \
 libecalbackendcontacts_la_SOURCES =		\
 	e-cal-backend-contacts-factory.c	\
 	e-cal-backend-contacts.c		\
-	e-cal-backend-contacts.h
+	e-cal-backend-contacts.h		\
+	e-source-contacts.c			\
+	e-source-contacts.h
 
 libecalbackendcontacts_la_LIBADD =						\
 	$(top_builddir)/calendar/libecal/libecal-1.2.la				\
diff --git a/calendar/backends/contacts/e-cal-backend-contacts-factory.c b/calendar/backends/contacts/e-cal-backend-contacts-factory.c
index c7b06e6..2c22740 100644
--- a/calendar/backends/contacts/e-cal-backend-contacts-factory.c
+++ b/calendar/backends/contacts/e-cal-backend-contacts-factory.c
@@ -11,6 +11,7 @@
 
 #include <libedata-cal/e-cal-backend-factory.h>
 #include "e-cal-backend-contacts.h"
+#include "e-source-contacts.h"
 
 #define FACTORY_NAME "contacts"
 
@@ -50,6 +51,7 @@ e_cal_backend_contacts_events_factory_init (ECalBackendFactory *factory)
 G_MODULE_EXPORT void
 e_module_load (GTypeModule *type_module)
 {
+	e_source_contacts_type_register (type_module);
 	e_cal_backend_contacts_events_factory_register_type (type_module);
 }
 
diff --git a/calendar/backends/contacts/e-cal-backend-contacts.c b/calendar/backends/contacts/e-cal-backend-contacts.c
index d0e19d7..e36d542 100644
--- a/calendar/backends/contacts/e-cal-backend-contacts.c
+++ b/calendar/backends/contacts/e-cal-backend-contacts.c
@@ -35,7 +35,8 @@
 #include <libsoup/soup.h>
 
 #include <libedataserver/e-xml-hash-utils.h>
-#include <libedataserver/e-source-list.h>
+#include <libedataserver/e-source-registry.h>
+#include <libedataserver/e-source-address-book.h>
 #include <libedataserver/e-flag.h>
 #include <libecal/e-cal-recur.h>
 #include <libecal/e-cal-util.h>
@@ -45,6 +46,8 @@
 #include <libebook/e-book-query.h>
 #include <libebook/e-contact.h>
 
+#include "e-source-contacts.h"
+
 #define E_CAL_BACKEND_CONTACTS_GET_PRIVATE(obj) \
 	(G_TYPE_INSTANCE_GET_PRIVATE \
 	((obj), E_TYPE_CAL_BACKEND_CONTACTS, ECalBackendContactsPrivate))
@@ -65,19 +68,15 @@ typedef enum
 
 /* Private part of the ECalBackendContacts structure */
 struct _ECalBackendContactsPrivate {
-        ESourceList  *addressbook_sources;
 
 	GHashTable   *addressbooks;       /* UID -> BookRecord */
-	GHashTable   *credentials;	  /* UID -> ECredentials to use in "authenticate" handler */
-	gboolean      loaded;
+	gboolean      addressbook_loaded;
 
 	EBookClientView *book_view;
 	GHashTable   *tracked_contacts;   /* UID -> ContactRecord */
 
 	GHashTable *zones;
 
-	EFlag   *init_done_flag; /* is set, when the init thread gone */
-
 	/* properties related to track alarm settings for this backend */
 	GConfClient *conf_client;
 	guint notifyid1;
@@ -107,9 +106,6 @@ typedef struct _ContactRecord {
 #define ANNIVERSARY_UID_EXT "-anniversary"
 #define BIRTHDAY_UID_EXT   "-birthday"
 
-#define CBC_CREDENTIALS_KEY_SOURCE_UID "cbc-source-uid"
-#define CBC_CREDENTIALS_KEY_ALREADY_USED "cbc-already-used"
-
 static ECalComponent * create_birthday (ECalBackendContacts *cbc, EContact *contact);
 static ECalComponent * create_anniversary (ECalBackendContacts *cbc, EContact *contact);
 
@@ -119,340 +115,67 @@ static void contacts_removed_cb (EBookClientView *book_view, const GSList *conta
 static void e_cal_backend_contacts_add_timezone (ECalBackendSync *backend, EDataCal *cal, GCancellable *cancellable, const gchar *tzobj, GError **perror);
 static void setup_alarm (ECalBackendContacts *cbc, ECalComponent *comp);
 
-static gboolean
-book_client_authenticate_cb (EClient *client,
-                             ECredentials *credentials,
-                             ECalBackendContacts *cbc)
-{
-	ESource *source;
-	const gchar *source_uid;
-	ECredentials *use_credentials;
-
-	g_return_val_if_fail (client != NULL, FALSE);
-	g_return_val_if_fail (credentials != NULL, FALSE);
-	g_return_val_if_fail (cbc != NULL, FALSE);
-
-	source = e_client_get_source (client);
-
-	source_uid = e_source_peek_uid (source);
-	g_return_val_if_fail (source_uid != NULL, FALSE);
-
-	use_credentials = g_hash_table_lookup (cbc->priv->credentials, source_uid);
-
-	if (use_credentials &&
-	    g_strcmp0 (e_credentials_peek (use_credentials, CBC_CREDENTIALS_KEY_ALREADY_USED), "1") != 0) {
-		GSList *keys, *iter;
-
-		e_credentials_clear (credentials);
-		keys = e_credentials_list_keys (use_credentials);
-
-		for (iter = keys; iter; iter = iter->next) {
-			const gchar *key = iter->data;
-
-			e_credentials_set (credentials, key, e_credentials_peek (use_credentials, key));
-		}
-
-		e_credentials_set (credentials, E_CREDENTIALS_KEY_FOREIGN_REQUEST, NULL);
-
-		e_credentials_clear_peek (use_credentials);
-		e_credentials_set (use_credentials, CBC_CREDENTIALS_KEY_ALREADY_USED, "1");
-		g_slist_free (keys);
-
-		return TRUE;
-	}
-
-	/* write properties on a copy of original credentials */
-	credentials = e_credentials_new_clone (credentials);
-
-	if (!e_credentials_has_key (credentials, E_CREDENTIALS_KEY_USERNAME)) {
-		const gchar *username;
-
-		username = e_source_get_property (source, "username");
-		if (!username) {
-			const gchar *auth;
-
-			auth = e_source_get_property (source, "auth");
-			if (g_strcmp0 (auth, "ldap/simple-binddn") == 0)
-				username = e_source_get_property (source, "binddn");
-			else
-				username = e_source_get_property (source, "email_addr");
-
-			if (!username)
-				username = "";
-		}
-
-		e_credentials_set (credentials, E_CREDENTIALS_KEY_USERNAME, username);
-
-		/* no username set on the source - deny authentication request */
-		if (!e_credentials_has_key (credentials, E_CREDENTIALS_KEY_USERNAME))
-			return FALSE;
-	}
-
-	if (!e_credentials_has_key (credentials, E_CREDENTIALS_KEY_PROMPT_KEY)) {
-		gchar *prompt_key;
-		SoupURI *suri;
-
-		suri = soup_uri_new (e_client_get_uri (client));
-		g_return_val_if_fail (suri != NULL, FALSE);
-
-		soup_uri_set_user (suri, e_credentials_peek (credentials, E_CREDENTIALS_KEY_USERNAME));
-		soup_uri_set_password (suri, NULL);
-		soup_uri_set_fragment (suri, NULL);
-
-		prompt_key = soup_uri_to_string (suri, FALSE);
-		soup_uri_free (suri);
-
-		e_credentials_set (credentials, E_CREDENTIALS_KEY_PROMPT_KEY, prompt_key);
-
-		g_free (prompt_key);
-	}
-
-	if (!e_credentials_has_key (credentials, E_CREDENTIALS_KEY_PROMPT_TEXT)) {
-		gchar *prompt, *reason;
-		gchar *username_markup, *source_name_markup;
-
-		reason = e_credentials_get (credentials, E_CREDENTIALS_KEY_PROMPT_REASON);
-		username_markup = g_markup_printf_escaped ("<b>%s</b>", e_credentials_peek (credentials, E_CREDENTIALS_KEY_USERNAME));
-		source_name_markup = g_markup_printf_escaped ("<b>%s</b>", e_source_peek_name (source));
-
-		if (reason && *reason)
-			prompt = g_strdup_printf (_("Enter password for address book %s (user %s)\nReason: %s"), source_name_markup, username_markup, reason);
-		else
-			prompt = g_strdup_printf (_("Enter password for address book %s (user %s)"), source_name_markup, username_markup);
-
-		e_credentials_set (credentials, E_CREDENTIALS_KEY_PROMPT_TEXT, prompt);
-
-		g_free (username_markup);
-		g_free (source_name_markup);
-		g_free (reason);
-		g_free (prompt);
-	}
-
-	e_credentials_set (credentials, E_CREDENTIALS_KEY_FOREIGN_REQUEST, "1");
-	e_credentials_set (credentials, CBC_CREDENTIALS_KEY_SOURCE_UID, e_source_peek_uid (source));
-
-	/* this is a reprompt, set proper flags */
-	if (use_credentials) {
-		guint prompt_flags;
-		gchar *prompt_flags_str;
-
-		if (e_credentials_has_key (credentials, E_CREDENTIALS_KEY_PROMPT_FLAGS)) {
-			prompt_flags = e_credentials_util_string_to_prompt_flags (e_credentials_peek (credentials, E_CREDENTIALS_KEY_PROMPT_FLAGS));
-		} else {
-			prompt_flags = E_CREDENTIALS_PROMPT_FLAG_REMEMBER_FOREVER
-				     | E_CREDENTIALS_PROMPT_FLAG_SECRET
-				     | E_CREDENTIALS_PROMPT_FLAG_ONLINE;
-		}
-
-		prompt_flags |= E_CREDENTIALS_PROMPT_FLAG_REPROMPT;
-		prompt_flags_str = e_credentials_util_prompt_flags_to_string (prompt_flags);
-		e_credentials_set (credentials, E_CREDENTIALS_KEY_PROMPT_FLAGS, prompt_flags_str);
-		g_free (prompt_flags_str);
-	}
-
-	e_cal_backend_notify_auth_required (E_CAL_BACKEND (cbc), FALSE, credentials);
-
-	/* this is a copy of original credentials */
-	e_credentials_free (credentials);
-
-	return FALSE;
-}
-
-static void book_client_opened_cb (EBookClient *book_client, const GError *error, ECalBackendContacts *cbc);
-
-static gpointer
-cbc_reopen_book_client_thread (gpointer user_data)
-{
-	EBookClient *book_client = user_data;
-	gboolean done = FALSE;
-
-	while (!done) {
-		done = TRUE;
-
-		if (!e_client_is_opened (E_CLIENT (book_client))) {
-			GError *error = NULL;
-
-			if (!e_client_open_sync (E_CLIENT (book_client), TRUE, NULL, &error) || error) {
-				if (g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_BUSY)) {
-					done = FALSE;
-					g_usleep (500000);
-				} else
-					g_warning ("%s: Failed to open book: %s", G_STRFUNC, error ? error->message : "Unknown error");
-			}
-
-			g_clear_error (&error);
-		}
-	}
-
-	g_object_unref (book_client);
-
-	return NULL;
-}
-
-static void
-cbc_reopen_book_client (ECalBackendContacts *cbc,
-                        EBookClient *book_client)
-{
-	GError *error = NULL;
-
-	g_return_if_fail (book_client != NULL);
-
-	/* make sure signal handlers are disconnected */
-	g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_authenticate_cb), cbc);
-	g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_opened_cb), cbc);
-
-	/* and connect them */
-	g_signal_connect (book_client, "authenticate", G_CALLBACK (book_client_authenticate_cb), cbc);
-	g_signal_connect (book_client, "opened", G_CALLBACK (book_client_opened_cb), cbc);
-
-	g_object_ref (book_client);
-	if (!g_thread_create (cbc_reopen_book_client_thread, book_client, FALSE, &error)) {
-		g_object_unref (book_client);
-
-		g_warning ("%s: Cannot create thread to reload source! (%s)", G_STRFUNC, error ? error->message : "Unknown error");
-		g_clear_error (&error);
-	}
-}
-
-static void
-book_client_opened_cb (EBookClient *book_client,
-                       const GError *error,
-                       ECalBackendContacts *cbc)
-{
-	ESource *source;
-	const gchar *source_uid;
-	BookRecord *br = NULL;
-
-	g_return_if_fail (book_client != NULL);
-	g_return_if_fail (cbc != NULL);
-
-	g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_authenticate_cb), cbc);
-	g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_opened_cb), cbc);
-
-	source = e_client_get_source (E_CLIENT (book_client));
-	source_uid = e_source_peek_uid (source);
-	g_return_if_fail (source_uid != NULL);
-
-	if (source_uid) {
-		br = g_hash_table_lookup (cbc->priv->addressbooks, source_uid);
-		if (br && br->book_client != book_client)
-			br = NULL;
-	}
-
-	if (!br)
-		return;
-
-	if (g_error_matches (error, E_CLIENT_ERROR, E_CLIENT_ERROR_AUTHENTICATION_FAILED)) {
-		if (g_hash_table_lookup (cbc->priv->credentials, source_uid)) {
-			cbc_reopen_book_client (cbc, br->book_client);
-		}
-	} else if (!error) {
-		EBookQuery *query;
-		EBookClientView *book_view;
-		gchar *query_sexp;
-		GError *error = NULL;
-
-		if (br->book_view)
-			g_object_unref (br->book_view);
-		br->book_view = NULL;
-
-		query = e_book_query_andv (
-			e_book_query_orv (
-				e_book_query_field_exists (E_CONTACT_FILE_AS),
-				e_book_query_field_exists (E_CONTACT_FULL_NAME),
-				e_book_query_field_exists (E_CONTACT_GIVEN_NAME),
-				e_book_query_field_exists (E_CONTACT_NICKNAME),
-				NULL),
-			e_book_query_orv (
-				e_book_query_field_exists (E_CONTACT_BIRTH_DATE),
-				e_book_query_field_exists (E_CONTACT_ANNIVERSARY),
-				NULL),
-			NULL);
-		query_sexp = e_book_query_to_string (query);
-		e_book_query_unref (query);
-
-		if (!e_book_client_get_view_sync (book_client, query_sexp, &book_view, NULL, &error))
-			g_warning ("%s: Failed to get book view on '%s': %s", G_STRFUNC, e_source_peek_name (source), error ? error->message : "Unknown error");
-		g_free (query_sexp);
-		g_clear_error (&error);
-
-		g_signal_connect (book_view, "objects-added", G_CALLBACK (contacts_added_cb), cbc);
-		g_signal_connect (book_view, "objects-removed", G_CALLBACK (contacts_removed_cb), cbc);
-		g_signal_connect (book_view, "objects-modified", G_CALLBACK (contacts_modified_cb), cbc);
-
-		e_book_client_view_start (book_view, NULL);
-
-		br->book_view = book_view;
-	}
-}
-
-static void
-e_cal_backend_contacts_authenticate_user (ECalBackendSync *backend,
-                                          GCancellable *cancellable,
-                                          ECredentials *credentials,
-                                          GError **error)
-{
-	ECalBackendContacts *cbc;
-	const gchar *source_uid;
-	BookRecord *br;
-
-	g_return_if_fail (backend != NULL);
-	g_return_if_fail (credentials != NULL);
-
-	cbc = E_CAL_BACKEND_CONTACTS (backend);
-	g_return_if_fail (cbc != NULL);
-
-	source_uid = e_credentials_peek (credentials, CBC_CREDENTIALS_KEY_SOURCE_UID);
-	g_return_if_fail (source_uid != NULL);
-
-	br = g_hash_table_lookup (cbc->priv->addressbooks, source_uid);
-	if (!br || !br->book_client ||
-	    /* no username means user cancelled password prompt */
-	    !e_credentials_has_key (credentials, E_CREDENTIALS_KEY_USERNAME)) {
-		g_hash_table_remove (cbc->priv->credentials, source_uid);
-		return;
-	}
-
-	g_hash_table_insert (cbc->priv->credentials, g_strdup (source_uid), e_credentials_new_clone (credentials));
-
-	cbc_reopen_book_client (cbc, br->book_client);
-}
-
 /* BookRecord methods */
 static BookRecord *
 book_record_new (ECalBackendContacts *cbc,
                  ESource *source)
 {
 	EBookClient *book_client;
+	EBookQuery *query;
+	EBookClientView *book_view;
 	BookRecord *br;
 	GError *error = NULL;
+	gchar *query_sexp;
 
 	book_client = e_book_client_new (source, &error);
-	if (!book_client) {
-		g_warning ("%s: Failed to create new book: %s", G_STRFUNC, error ? error->message : "Unknown error");
-		g_clear_error (&error);
-
+	if (!book_client || !e_client_open_sync (E_CLIENT (book_client), TRUE, NULL, &error) || error) {
+		if (book_client)
+			g_object_unref (book_client);
+		if (error) {
+			g_warning ("%s: Failed to open book: %s", G_STRFUNC, error->message);
+			g_error_free (error);
+		}
 		return NULL;
 	}
 
-	g_signal_connect (book_client, "authenticate", G_CALLBACK (book_client_authenticate_cb), cbc);
-	g_signal_connect (book_client, "opened", G_CALLBACK (book_client_opened_cb), cbc);
+	query = e_book_query_andv (
+		e_book_query_orv (
+			e_book_query_field_exists (E_CONTACT_FILE_AS),
+			e_book_query_field_exists (E_CONTACT_FULL_NAME),
+			e_book_query_field_exists (E_CONTACT_GIVEN_NAME),
+			e_book_query_field_exists (E_CONTACT_NICKNAME),
+			NULL),
+		e_book_query_orv (
+			e_book_query_field_exists (E_CONTACT_BIRTH_DATE),
+			e_book_query_field_exists (E_CONTACT_ANNIVERSARY),
+			NULL),
+		NULL);
+	query_sexp = e_book_query_to_string (query);
+	e_book_query_unref (query);
+
+	if (!e_book_client_get_view_sync (book_client, query_sexp, &book_view, NULL, &error)) {
+		g_warning ("%s: Failed to get book view on '%s': %s", G_STRFUNC, e_source_get_display_name (source), error ? error->message : "Unknown error");
 
-	if (!e_client_open_sync (E_CLIENT (book_client), TRUE, NULL, &error) || error) {
-		g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_authenticate_cb), cbc);
-		g_signal_handlers_disconnect_by_func (book_client, G_CALLBACK (book_client_opened_cb), cbc);
+		g_free (query_sexp);
 		g_object_unref (book_client);
-		if (error) {
-			g_warning ("%s: Failed to open book: %s", G_STRFUNC, error->message);
+
+		if (error)
 			g_error_free (error);
-		}
+
 		return NULL;
 	}
+	g_free (query_sexp);
 
-	br = g_new0 (BookRecord, 1);
+	g_signal_connect (book_view, "objects-added", G_CALLBACK (contacts_added_cb), cbc);
+	g_signal_connect (book_view, "objects-removed", G_CALLBACK (contacts_removed_cb), cbc);
+	g_signal_connect (book_view, "objects-modified", G_CALLBACK (contacts_modified_cb), cbc);
+
+	e_book_client_view_start (book_view, NULL);
+
+	br = g_new (BookRecord, 1);
 	br->cbc = cbc;
 	br->book_client = book_client;
-	br->book_view = NULL;
+	br->book_view = book_view;
 
 	return br;
 }
@@ -474,11 +197,8 @@ book_record_free (BookRecord *br)
 	if (!br)
 		return;
 
-	g_signal_handlers_disconnect_by_func (br->book_client, G_CALLBACK (book_client_authenticate_cb), br->cbc);
-	g_signal_handlers_disconnect_by_func (br->book_client, G_CALLBACK (book_client_opened_cb), br->cbc);
 	g_hash_table_foreach_remove (br->cbc->priv->tracked_contacts, remove_by_book, br->book_client);
-	if (br->book_view)
-		g_object_unref (br->book_view);
+	g_object_unref (br->book_view);
 	g_object_unref (br->book_client);
 
 	g_free (br);
@@ -599,138 +319,42 @@ contact_record_cb (gpointer key,
 	}
 }
 
-static gboolean
-is_source_usable (ESource *source,
-                  ESourceGroup *group)
+static void
+source_added_cb (ESourceRegistry *registry,
+                 ESource *source,
+                 ECalBackendContacts *cbc)
 {
-	const gchar *base_uri;
-	const gchar *prop;
+	ESourceContacts *extension;
+	const gchar *extension_name;
+	BookRecord *br;
+	const gchar *uid;
 
-	base_uri = e_source_group_peek_base_uri (group);
-	if (!base_uri)
-		return FALSE;
+	extension_name = E_SOURCE_EXTENSION_CONTACTS_BACKEND;
+	extension = e_source_get_extension (source, extension_name);
 
-	prop = e_source_get_property (source, "use-in-contacts-calendar");
+	if (extension == NULL)
+		return;
 
-	/* the later check is for backward compatibility */
-	return (prop && g_str_equal (prop, "1")) || (!prop && g_str_has_prefix (base_uri, "file://")) || (!prop && g_str_has_prefix (base_uri, "local:"));
-}
+	if (!e_source_contacts_get_include_me (extension))
+		return;
 
-/* SourceList callbacks */
-static void
-add_source (ECalBackendContacts *cbc,
-            ESource *source)
-{
-	BookRecord *br = book_record_new (cbc, source);
-	const gchar *uid = e_source_peek_uid (source);
+	uid = e_source_get_uid (source);
+	br = book_record_new (cbc, source);
 
-	if (!br)
+	if (br == NULL)
 		return;
 
 	g_hash_table_insert (cbc->priv->addressbooks, g_strdup (uid), br);
 }
 
 static void
-source_added_cb (ESourceGroup *group,
-                 ESource *source,
-                 gpointer user_data)
-{
-	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (user_data);
-
-	g_return_if_fail (cbc);
-
-	if (is_source_usable (source, group))
-		add_source (cbc, source);
-}
-
-static void
-source_removed_cb (ESourceGroup *group,
+source_removed_cb (ESourceRegistry *registry,
                    ESource *source,
-                   gpointer user_data)
+                   ECalBackendContacts *cbc)
 {
-	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (user_data);
-	const gchar          *uid = e_source_peek_uid (source);
-
-	g_return_if_fail (cbc);
+	const gchar *uid = e_source_get_uid (source);
 
 	g_hash_table_remove (cbc->priv->addressbooks, uid);
-	g_hash_table_remove (cbc->priv->credentials, uid);
-}
-
-static void
-source_list_changed_cb (ESourceList *source_list,
-                        gpointer user_data)
-{
-	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (user_data);
-	GSList *g, *s;
-
-	g_return_if_fail (cbc);
-
-	for (g = e_source_list_peek_groups (source_list); g; g = g->next) {
-		ESourceGroup *group = E_SOURCE_GROUP (g->data);
-
-		if (!group)
-			continue;
-
-		for (s = e_source_group_peek_sources (group); s; s = s->next) {
-			ESource *source = E_SOURCE (s->data);
-			const gchar *uid;
-
-			if (!source)
-				continue;
-
-			uid = e_source_peek_uid (source);
-			if (!uid)
-				continue;
-
-			if (is_source_usable (source, group)) {
-				if (!g_hash_table_lookup (cbc->priv->addressbooks, uid))
-					source_added_cb (group, source, cbc);
-			} else if (g_hash_table_lookup (cbc->priv->addressbooks, uid)) {
-				source_removed_cb (group, source, cbc);
-			}
-		}
-	}
-}
-
-static void
-source_group_added_cb (ESourceList *source_list,
-                       ESourceGroup *group,
-                       gpointer user_data)
-{
-	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (user_data);
-	GSList *i;
-
-	g_return_if_fail (cbc);
-
-	for (i = e_source_group_peek_sources (group); i; i = i->next) {
-		ESource *source = E_SOURCE (i->data);
-		source_added_cb (group, source, cbc);
-	}
-
-	/* Watch for future changes */
-	g_signal_connect (group, "source_added", G_CALLBACK (source_added_cb), cbc);
-	g_signal_connect (group, "source_removed", G_CALLBACK (source_removed_cb), cbc);
-}
-
-static void
-source_group_removed_cb (ESourceList *source_list,
-                         ESourceGroup *group,
-                         gpointer user_data)
-{
-	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (user_data);
-	GSList *i = NULL;
-
-	g_return_if_fail (cbc);
-
-        /* Unload all address books from this group */
-	for (i = e_source_group_peek_sources (group); i; i = i->next) {
-		ESource *source = E_SOURCE (i->data);
-		const gchar *uid = e_source_peek_uid (source);
-
-		g_hash_table_remove (cbc->priv->addressbooks, uid);
-		g_hash_table_remove (cbc->priv->credentials, uid);
-	}
 }
 
 /************************************************************************************/
@@ -1316,36 +940,6 @@ e_cal_backend_contacts_notify_online_cb (ECalBackend *backend,
 	e_cal_backend_notify_readonly (backend, TRUE);
 }
 
-static gpointer
-init_sources_cb (ECalBackendContacts *cbc)
-{
-	ECalBackendContactsPrivate *priv;
-	GSList *i;
-
-	g_return_val_if_fail (cbc != NULL, NULL);
-
-	priv = cbc->priv;
-
-	if (!priv->addressbook_sources)
-		return NULL;
-
-	/* Create address books for existing sources */
-	for (i = e_source_list_peek_groups (priv->addressbook_sources); i; i = i->next) {
-		ESourceGroup *source_group = E_SOURCE_GROUP (i->data);
-
-		source_group_added_cb (priv->addressbook_sources, source_group, cbc);
-	}
-
-        /* Listen for source list changes */
-        g_signal_connect (priv->addressbook_sources, "changed", G_CALLBACK (source_list_changed_cb), cbc);
-        g_signal_connect (priv->addressbook_sources, "group_added", G_CALLBACK (source_group_added_cb), cbc);
-        g_signal_connect (priv->addressbook_sources, "group_removed", G_CALLBACK (source_group_removed_cb), cbc);
-
-	e_flag_set (priv->init_done_flag);
-
-	return NULL;
-}
-
 static void
 e_cal_backend_contacts_open (ECalBackendSync *backend,
                              EDataCal *cal,
@@ -1355,24 +949,11 @@ e_cal_backend_contacts_open (ECalBackendSync *backend,
 {
 	ECalBackendContacts *cbc = E_CAL_BACKEND_CONTACTS (backend);
 	ECalBackendContactsPrivate *priv = cbc->priv;
-	GError *error = NULL;
-
-	if (priv->loaded)
-		return;
-
-	/* initialize addressbook sources in new thread to make this function quick as much as possible */
-	if (!g_thread_create ((GThreadFunc) init_sources_cb, cbc, FALSE, &error)) {
-		e_flag_set (priv->init_done_flag);
-		g_warning ("%s: Cannot create thread to initialize sources! (%s)", G_STRFUNC, error ? error->message : "Unknown error");
-		if (error)
-			g_error_free (error);
 
-		g_propagate_error (perror, EDC_ERROR (OtherError));
-		e_cal_backend_notify_opened (E_CAL_BACKEND (backend), EDC_ERROR (OtherError));
+	if (priv->addressbook_loaded)
 		return;
-	}
 
-	priv->loaded = TRUE;
+	priv->addressbook_loaded = TRUE;
 	e_cal_backend_notify_readonly (E_CAL_BACKEND (backend), TRUE);
 	e_cal_backend_notify_online (E_CAL_BACKEND (backend), TRUE);
 	e_cal_backend_notify_opened (E_CAL_BACKEND (backend), NULL);
@@ -1501,21 +1082,12 @@ e_cal_backend_contacts_finalize (GObject *object)
 
 	priv = E_CAL_BACKEND_CONTACTS_GET_PRIVATE (object);
 
-	if (priv->init_done_flag) {
-		e_flag_wait (priv->init_done_flag);
-		e_flag_free (priv->init_done_flag);
-		priv->init_done_flag = NULL;
-	}
-
 	if (priv->update_alarms_id) {
 		g_source_remove (priv->update_alarms_id);
 		priv->update_alarms_id = 0;
 	}
 
-	if (priv->addressbook_sources)
-		g_object_unref (priv->addressbook_sources);
 	g_hash_table_destroy (priv->addressbooks);
-	g_hash_table_destroy (priv->credentials);
 	g_hash_table_destroy (priv->tracked_contacts);
 	g_hash_table_destroy (priv->zones);
 	if (priv->notifyid1)
@@ -1531,27 +1103,49 @@ e_cal_backend_contacts_finalize (GObject *object)
 	G_OBJECT_CLASS (e_cal_backend_contacts_parent_class)->finalize (object);
 }
 
+static void
+e_cal_backend_contacts_constructed (GObject *object)
+{
+	ESourceRegistry *registry;
+	GList *list, *link;
+	const gchar *extension_name;
+
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (e_cal_backend_contacts_parent_class)->constructed (object);
+
+	registry = e_backend_get_registry (E_BACKEND (object));
+
+	/* Query all address book sources from the registry. */
+
+	extension_name = E_SOURCE_EXTENSION_ADDRESS_BOOK;
+	list = e_source_registry_list_sources (registry, extension_name);
+	for (link = list; link != NULL; link = g_list_next (link))
+		source_added_cb (
+			registry, E_SOURCE (link->data),
+			E_CAL_BACKEND_CONTACTS (object));
+	g_list_free (list);
+
+	g_signal_connect (
+		registry, "source-added",
+		G_CALLBACK (source_added_cb), object);
+
+	g_signal_connect (
+		registry, "source-removed",
+		G_CALLBACK (source_removed_cb), object);
+}
+
 /* Object initialization function for the contacts backend */
 static void
 e_cal_backend_contacts_init (ECalBackendContacts *cbc)
 {
 	cbc->priv = E_CAL_BACKEND_CONTACTS_GET_PRIVATE (cbc);
 
-	if (!e_book_client_get_sources (&cbc->priv->addressbook_sources, NULL))
-		cbc->priv->addressbook_sources = NULL;
-
 	cbc->priv->addressbooks = g_hash_table_new_full (
 		(GHashFunc) g_str_hash,
 		(GEqualFunc) g_str_equal,
 		(GDestroyNotify) g_free,
 		(GDestroyNotify) book_record_free);
 
-	cbc->priv->credentials = g_hash_table_new_full (
-		(GHashFunc) g_str_hash,
-		(GEqualFunc) g_str_equal,
-		(GDestroyNotify) g_free,
-		(GDestroyNotify) e_credentials_free);
-
 	cbc->priv->tracked_contacts = g_hash_table_new_full (
 		(GHashFunc) g_str_hash,
 		(GEqualFunc) g_str_equal,
@@ -1564,7 +1158,6 @@ e_cal_backend_contacts_init (ECalBackendContacts *cbc)
 		(GDestroyNotify) g_free,
 		(GDestroyNotify) free_zone);
 
-	cbc->priv->init_done_flag = e_flag_new ();
 	cbc->priv->conf_client = gconf_client_get_default ();
 	cbc->priv->notifyid1 = 0;
 	cbc->priv->notifyid2 = 0;
@@ -1608,6 +1201,7 @@ e_cal_backend_contacts_class_init (ECalBackendContactsClass *class)
 	sync_class = (ECalBackendSyncClass *) class;
 
 	object_class->finalize = e_cal_backend_contacts_finalize;
+	object_class->constructed = e_cal_backend_contacts_constructed;
 
 	sync_class->get_backend_property_sync	= e_cal_backend_contacts_get_backend_property;
 	sync_class->open_sync			= e_cal_backend_contacts_open;
@@ -1619,8 +1213,10 @@ e_cal_backend_contacts_class_init (ECalBackendContactsClass *class)
 	sync_class->get_object_list_sync	= e_cal_backend_contacts_get_object_list;
 	sync_class->add_timezone_sync		= e_cal_backend_contacts_add_timezone;
 	sync_class->get_free_busy_sync		= e_cal_backend_contacts_get_free_busy;
-	sync_class->authenticate_user_sync	= e_cal_backend_contacts_authenticate_user;
 
 	backend_class->start_view		= e_cal_backend_contacts_start_view;
 	backend_class->internal_get_timezone	= e_cal_backend_contacts_internal_get_timezone;
+
+	/* Register our ESource extension. */
+	E_TYPE_SOURCE_CONTACTS;
 }
diff --git a/calendar/backends/contacts/e-source-contacts.c b/calendar/backends/contacts/e-source-contacts.c
new file mode 100644
index 0000000..32ba589
--- /dev/null
+++ b/calendar/backends/contacts/e-source-contacts.c
@@ -0,0 +1,139 @@
+/*
+ * e-source-contacts.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <webcal://www.gnu.org/licenses/>
+ *
+ */
+
+#include "e-source-contacts.h"
+
+#define E_SOURCE_CONTACTS_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_SOURCE_CONTACTS, ESourceContactsPrivate))
+
+struct _ESourceContactsPrivate {
+	gboolean include_me;
+};
+
+enum {
+	PROP_0,
+	PROP_INCLUDE_ME
+};
+
+G_DEFINE_DYNAMIC_TYPE (
+	ESourceContacts,
+	e_source_contacts,
+	E_TYPE_SOURCE_EXTENSION)
+
+static void
+source_contacts_set_property (GObject *object,
+                              guint property_id,
+                              const GValue *value,
+                              GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_INCLUDE_ME:
+			e_source_contacts_set_include_me (
+				E_SOURCE_CONTACTS (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+source_contacts_get_property (GObject *object,
+                              guint property_id,
+                              GValue *value,
+                              GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_INCLUDE_ME:
+			g_value_set_boolean (
+				value,
+				e_source_contacts_get_include_me (
+				E_SOURCE_CONTACTS (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+e_source_contacts_class_init (ESourceContactsClass *class)
+{
+	GObjectClass *object_class;
+	ESourceExtensionClass *extension_class;
+
+	g_type_class_add_private (class, sizeof (ESourceContactsPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = source_contacts_set_property;
+	object_class->get_property = source_contacts_get_property;
+
+	extension_class = E_SOURCE_EXTENSION_CLASS (class);
+	extension_class->name = E_SOURCE_EXTENSION_CONTACTS_BACKEND;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_INCLUDE_ME,
+		g_param_spec_boolean (
+			"include-me",
+			"Include Me",
+			"Include this address book in the contacts calendar",
+			TRUE,
+			G_PARAM_READWRITE |
+			G_PARAM_CONSTRUCT |
+			E_SOURCE_PARAM_SETTING));
+}
+
+static void
+e_source_contacts_class_finalize (ESourceContactsClass *class)
+{
+}
+
+static void
+e_source_contacts_init (ESourceContacts *extension)
+{
+	extension->priv = E_SOURCE_CONTACTS_GET_PRIVATE (extension);
+}
+
+void
+e_source_contacts_type_register (GTypeModule *type_module)
+{
+	/* XXX G_DEFINE_DYNAMIC_TYPE declares a static type registration
+	 *     function, so we have to wrap it with a public function in
+	 *     order to register types from a separate compilation unit. */
+	e_source_contacts_register_type (type_module);
+}
+
+gboolean
+e_source_contacts_get_include_me (ESourceContacts *extension)
+{
+	g_return_val_if_fail (E_IS_SOURCE_CONTACTS (extension), FALSE);
+
+	return extension->priv->include_me;
+}
+
+void
+e_source_contacts_set_include_me (ESourceContacts *extension,
+                                  gboolean include_me)
+{
+	g_return_if_fail (E_IS_SOURCE_CONTACTS (extension));
+
+	extension->priv->include_me = include_me;
+
+	g_object_notify (G_OBJECT (extension), "include-me");
+}
diff --git a/calendar/backends/contacts/e-source-contacts.h b/calendar/backends/contacts/e-source-contacts.h
new file mode 100644
index 0000000..95d9b83
--- /dev/null
+++ b/calendar/backends/contacts/e-source-contacts.h
@@ -0,0 +1,70 @@
+/*
+ * e-source-contacts.h
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <webcal://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef E_SOURCE_CONTACTS_H
+#define E_SOURCE_CONTACTS_H
+
+#include <libedataserver/e-source-extension.h>
+
+/* Standard GObject macros */
+#define E_TYPE_SOURCE_CONTACTS \
+	(e_source_contacts_get_type ())
+#define E_SOURCE_CONTACTS(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_SOURCE_CONTACTS, ESourceContacts))
+#define E_SOURCE_CONTACTS_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_SOURCE_CONTACTS, ESourceContactsClass))
+#define E_IS_SOURCE_CONTACTS(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_SOURCE_CONTACTS))
+#define E_IS_SOURCE_CONTACTS_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_SOURCE_CONTACTS))
+#define E_SOURCE_CONTACTS_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_SOURCE_CONTACTS, ESourceContactsClass))
+
+#define E_SOURCE_EXTENSION_CONTACTS_BACKEND "Contacts Backend"
+
+G_BEGIN_DECLS
+
+typedef struct _ESourceContacts ESourceContacts;
+typedef struct _ESourceContactsClass ESourceContactsClass;
+typedef struct _ESourceContactsPrivate ESourceContactsPrivate;
+
+struct _ESourceContacts {
+	ESourceExtension parent;
+	ESourceContactsPrivate *priv;
+};
+
+struct _ESourceContactsClass {
+	ESourceExtensionClass parent_class;
+};
+
+GType		e_source_contacts_get_type	(void);
+void		e_source_contacts_type_register	(GTypeModule *type_module);
+gboolean	e_source_contacts_get_include_me
+						(ESourceContacts *extension);
+void		e_source_contacts_set_include_me
+						(ESourceContacts *extension,
+						 gboolean include_me);
+
+G_END_DECLS
+
+#endif /* E_SOURCE_CONTACTS_H */
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