added vCalendar importer and intelligent GnomeCalendar importer code here,

2002-02-08  Damon Chaplin  <damon@ximian.com>

	* importers/icalendar-importer.c: added vCalendar importer and
	intelligent GnomeCalendar importer code here, as it shares a lot of
	code with the iCalendar importer.

	NOTE: check_folder_type() needs to be finished at some point.
	It needs a new shell Corba call so it can decide whether to import
	events or tasks into the folder. Currently it just imports both.

	* importers/main.c (importer_factory_fn): create vCalendar importer
	or GnomeCalendar importer if required.

	* importers/evolution-calendar-importer.h: added declarations for
	creating a vCalendar importer and intelligent Gnome Calendar importer.

	* importers/Makefile.am: added -DEVOLUTION_SOUNDDIR so the importer
	knows what filename to use for audio alarms in vCalendar files.
	Added libicalvcal-evolution to LDADD.

	* importers/GNOME_Evolution_Calendar_Importer.oaf.in: added vCalendar
	importer and intelligent Gnome Calendar importer.

	* gui/comp-util.c (cal_comp_util_compare_event_timezones): return TRUE
	if the event uses UTC. We don't want to flag all events from Outlook,
	which use UTC.

svn path=/trunk/; revision=15628

1 files changed, 544 insertions, 102 deletions

diff --git a/calendar/importers/icalendar-importer.c b/calendar/importers/icalendar-importer.c
index 262c925b74..6a7a6f363f 100644
--- a/calendar/importers/icalendar-importer.c
+++ b/calendar/importers/icalendar-importer.c
@@ -23,17 +23,42 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <gtk/gtksignal.h>
+#include <gtk/gtkcheckbutton.h>
+#include <gtk/gtkhbox.h>
+#include <gtk/gtkmain.h>
+#include <libgnome/gnome-defs.h>
+#include <libgnome/gnome-util.h>
+#include <bonobo/bonobo-control.h>
+#include <gal/util/e-unicode-i18n.h>
 #include <cal-client.h>
 #include <importer/evolution-importer.h>
+#include <importer/evolution-intelligent-importer.h>
 #include <importer/GNOME_Evolution_Importer.h>
+#include "icalvcal.h"
 #include "evolution-calendar-importer.h"
 
+/* We timeout after 2 minutes, when opening the folders. */
+#define IMPORTER_TIMEOUT_SECONDS 120
+
+
 typedef struct {
 	CalClient *client;
+	CalClient *tasks_client;
 	EvolutionImporter *importer;
 	icalcomponent *icalcomp;
+	gboolean folder_contains_events;
+	gboolean folder_contains_tasks;
 } ICalImporter;
 
+typedef struct {
+	gboolean do_calendar;
+	gboolean do_tasks;
+} ICalIntelligentImporter;
+
+/*
+ * Functions shared by iCalendar & vCalendar importer.
+ */
+
 static void
 importer_destroy_cb (GtkObject *object, gpointer user_data)
 {
@@ -42,27 +67,27 @@ importer_destroy_cb (GtkObject *object, gpointer user_data)
 	g_return_if_fail (ici != NULL);
 
 	gtk_object_unref (GTK_OBJECT (ici->client));
+	gtk_object_unref (GTK_OBJECT (ici->tasks_client));
 	if (ici->icalcomp != NULL)
 		icalcomponent_free (ici->icalcomp);
 	g_free (ici);
 }
 
-static gboolean
-support_format_fn (EvolutionImporter *importer,
-		   const char *filename,
-		   void *closure)
+
+/* This reads in an entire file and returns it. It returns NULL on error.
+   The returned string should be freed. */
+static char*
+read_file (const char *filename)
 {
-	int fd;
+	int fd, n;
 	GString *str;
-	icalcomponent *icalcomp;
-	int n;
 	char buffer[2049];
-	gboolean ret = TRUE;
+	gboolean error = FALSE;
 
 	/* read file contents */
 	fd = open (filename, O_RDONLY);
 	if (fd == -1)
-		return FALSE;
+		return NULL;
 
 	str = g_string_new ("");
 	while (1) {
@@ -70,134 +95,159 @@ support_format_fn (EvolutionImporter *importer,
 		n = read (fd, buffer, sizeof (buffer) - 1);
 		if (n > 0) {
 			str = g_string_append (str, buffer);
-		}
-		else if (n == 0)
+		} else if (n == 0) {
 			break;
-		else {
-			ret = FALSE;
+		} else {
+			error = TRUE;
 			break;
 		}
 	}
 
 	close (fd);
 
-	/* parse the file */
-	if (ret) {
-		icalcomp = icalparser_parse_string (str->str);
-		if (icalcomp)
-			icalcomponent_free (icalcomp);
+	if (error) {
+		g_string_free (str, FALSE);
+		return NULL;
+	} else {
+		gchar *retval = str->str;
+		g_string_free (str, FALSE);
+		return retval;
+	}
+}
+
+
+/* Returns the URI to load given a folder path. Currently this is just a full
+   pathname. The returned string should be freed. */
+static char*
+get_uri_from_folder_path (const char *folderpath)
+{
+	const char *name;
+	char *parent;
+
+	if (folderpath == NULL || *folderpath == '\0') {
+		return g_strdup_printf ("%s/evolution/local/Calendar/calendar.ics",
+					g_get_home_dir ());
+	}
+
+	name = strrchr (folderpath, '/');
+	if (name == NULL || name == folderpath) {
+		parent = "evolution/local/";
+		if (folderpath[0] == '/')
+			name = folderpath + 1;
 		else
-			ret = FALSE;
+			name = folderpath;
+	} else {
+		name += 1;
+		parent = "evolution/local/Calendar/subfolders/";
 	}
 
-	g_string_free (str, TRUE);
+	return g_strdup_printf ("%s/%s%s/calendar.ics", g_get_home_dir (),
+				parent, name);
+}
 
-	return ret;
+
+/* Determine whether it is a calendar or tasks folder, or both. If it starts
+   with 'file:' we know it is a local folder so we see if it ends with
+   calendar.ics or tasks.ics. For remote folders (i.e. Exchange folders at
+   present), we import both calendar events and tasks into it. */
+static void
+check_folder_type (ICalImporter *ici,
+		   const char *folderpath)
+{
+	ici->folder_contains_events = TRUE;
+	ici->folder_contains_tasks = TRUE;
+
+	/* FIXME: Finish. */
 }
 
-static gboolean
-load_file_fn (EvolutionImporter *importer,
-	      const char *filename,
-	      const char *folderpath,
-	      void *closure)
+
+/* This removes all components except VEVENTs and VTIMEZONEs from the toplevel
+   icalcomponent, and returns a GList of the VTODO components. */
+static GList*
+prepare_events (icalcomponent *icalcomp)
 {
-	int fd;
-	GString *str;
-	icalcomponent *icalcomp;
-	int n;
-	char buffer[2049];
-	char *uri_str;
-	gboolean ret = TRUE;
-	ICalImporter *ici = (ICalImporter *) closure;
+	icalcomponent *subcomp, *next_subcomp;
+	GList *vtodos = NULL;
 
-	g_return_val_if_fail (ici != NULL, FALSE);
+	subcomp = icalcomponent_get_first_component (icalcomp,
+						     ICAL_ANY_COMPONENT);
+	while (subcomp) {
+		icalcomponent_kind child_kind = icalcomponent_isa (subcomp);
+		next_subcomp = icalcomponent_get_next_component (icalcomp, ICAL_ANY_COMPONENT);
+		if (child_kind != ICAL_VEVENT_COMPONENT
+		    && child_kind != ICAL_VTIMEZONE_COMPONENT) {
 
-	if (folderpath == NULL || *folderpath == '\0')
-		uri_str = g_strdup_printf ("%s/evolution/local/Calendar/calendar.ics",
-					   g_get_home_dir ());
-	else {
-		char *name;
-		char *parent;
-
-		name = strrchr (folderpath, '/');
-		if (name == NULL || name == folderpath) {
-			parent = g_strdup ("evolution/local/");
-			if (folderpath[0] == '/')
-				name = folderpath + 1;
+			icalcomponent_remove_component (icalcomp,
+							subcomp);
+			if (child_kind == ICAL_VTODO_COMPONENT)
+				vtodos = g_list_prepend (vtodos, subcomp);
 			else
-				name = folderpath;
-		}
-		else {
-			name += 1;
-			parent = g_strdup ("evolution/local/Calendar/subfolders/");
+				icalcomponent_free (subcomp);
 		}
-		uri_str = g_strdup_printf ("%s/%s%s/calendar.ics", g_get_home_dir (),
-					   parent, name);
+		subcomp = next_subcomp;
 	}
 
-	/* read file contents */
-	fd = open (filename, O_RDONLY);
-	if (fd == -1)
-		return FALSE;
+	return vtodos;
+}
 
-	str = g_string_new ("");
-	while (1) {
-		memset (buffer, 0, sizeof(buffer));
-		n = read (fd, buffer, sizeof (buffer) - 1);
-		if (n > 0) {
-			str = g_string_append (str, buffer);
-		}
-		else if (n == 0)
-			break;
-		else {
-			ret = FALSE;
-			break;
-		}
-	}
 
-	close (fd);
+/* This removes all components except VTODOs and VTIMEZONEs from the toplevel
+   icalcomponent, and adds the given list of VTODO components. The list is
+   freed afterwards. */
+static void
+prepare_tasks (icalcomponent *icalcomp, GList *vtodos)
+{
+	icalcomponent *subcomp, *next_subcomp;
+	GList *elem;
 
-	/* parse the file */
-	if (ret) {
-		icalcomp = icalparser_parse_string (str->str);
-		if (icalcomp) {
-			if (!cal_client_open_calendar (ici->client, uri_str, TRUE))
-				ret = FALSE;
-			else
-				ici->icalcomp = icalcomp;
+	subcomp = icalcomponent_get_first_component (icalcomp,
+						     ICAL_ANY_COMPONENT);
+	while (subcomp) {
+		icalcomponent_kind child_kind = icalcomponent_isa (subcomp);
+		next_subcomp = icalcomponent_get_next_component (icalcomp, ICAL_ANY_COMPONENT);
+		if (child_kind != ICAL_VTODO_COMPONENT
+		    && child_kind != ICAL_VTIMEZONE_COMPONENT) {
+			icalcomponent_remove_component (icalcomp, subcomp);
+			icalcomponent_free (subcomp);
 		}
-		else
-			ret = FALSE;
+		subcomp = next_subcomp;
 	}
 
-	g_string_free (str, TRUE);
-	g_free (uri_str);
-
-	return ret;
+	for (elem = vtodos; elem; elem = elem->next) {
+		icalcomponent_add_component (icalcomp, elem->data);
+	}
+	g_list_free (vtodos);
 }
 
+
 static void
 process_item_fn (EvolutionImporter *importer,
 		 CORBA_Object listener,
 		 void *closure,
 		 CORBA_Environment *ev)
 {
-	CalClientLoadState state;
+	CalClientLoadState state, tasks_state;
 	ICalImporter *ici = (ICalImporter *) closure;
+	GNOME_Evolution_ImporterListener_ImporterResult result;
+
+	result = GNOME_Evolution_ImporterListener_OK;
 
 	g_return_if_fail (ici != NULL);
 	g_return_if_fail (IS_CAL_CLIENT (ici->client));
 	g_return_if_fail (ici->icalcomp != NULL);
 
 	state = cal_client_get_load_state (ici->client);
-	if (state == CAL_CLIENT_LOAD_LOADING) {
+	tasks_state = cal_client_get_load_state (ici->tasks_client);
+	if (state == CAL_CLIENT_LOAD_LOADING
+	    || tasks_state == CAL_CLIENT_LOAD_LOADING) {
 		GNOME_Evolution_ImporterListener_notifyResult (
 			listener,
 			GNOME_Evolution_ImporterListener_NOT_READY,
 			TRUE, ev);
 		return;
 	}
-	else if (state != CAL_CLIENT_LOAD_LOADED) {
+	else if (state != CAL_CLIENT_LOAD_LOADED
+		 || tasks_state != CAL_CLIENT_LOAD_LOADED) {
 		GNOME_Evolution_ImporterListener_notifyResult (
 			listener,
 			GNOME_Evolution_ImporterListener_UNSUPPORTED_OPERATION,
@@ -205,20 +255,98 @@ process_item_fn (EvolutionImporter *importer,
 		return;
 	}
 
-	/* import objects into the given client */
-	if (!cal_client_update_objects (ici->client, ici->icalcomp)) {
-		g_warning ("Could not update objects");
-		GNOME_Evolution_ImporterListener_notifyResult (
-			listener,
-			GNOME_Evolution_ImporterListener_BAD_DATA,
-			FALSE, ev);
+	/* If the folder contains events & tasks we can just import everything
+	   into it. If it contains just events, we have to strip out the
+	   VTODOs and import them into the default tasks folder. If the folder
+	   contains just tasks, we strip out the VEVENTs, which do not get
+	   imported at all. */
+	if (ici->folder_contains_events && ici->folder_contains_tasks) {
+		if (!cal_client_update_objects (ici->client, ici->icalcomp))
+			result = GNOME_Evolution_ImporterListener_BAD_DATA;
+	} else if (ici->folder_contains_events) {
+		GList *vtodos = prepare_events (ici->icalcomp);
+		if (!cal_client_update_objects (ici->client, ici->icalcomp))
+			result = GNOME_Evolution_ImporterListener_BAD_DATA;
+
+		prepare_tasks (ici->icalcomp, vtodos);
+		if (!cal_client_update_objects (ici->tasks_client,
+						ici->icalcomp))
+			result = GNOME_Evolution_ImporterListener_BAD_DATA;
+	} else {
+		prepare_tasks (ici->icalcomp, NULL);
+		if (!cal_client_update_objects (ici->client, ici->icalcomp))
+			result = GNOME_Evolution_ImporterListener_BAD_DATA;
 	}
-	else {
-		GNOME_Evolution_ImporterListener_notifyResult (
-			listener,
-			GNOME_Evolution_ImporterListener_OK,
-			FALSE, ev);
+
+	GNOME_Evolution_ImporterListener_notifyResult (listener, result, FALSE,
+						       ev);
+}
+
+
+/*
+ * iCalendar importer functions.
+ */
+
+static gboolean
+support_format_fn (EvolutionImporter *importer,
+		   const char *filename,
+		   void *closure)
+{
+	char *contents;
+	icalcomponent *icalcomp;
+	gboolean ret = FALSE;
+
+	contents = read_file (filename);
+
+	/* parse the file */
+	if (contents) {
+		icalcomp = icalparser_parse_string (contents);
+		if (icalcomp) {
+			icalcomponent_free (icalcomp);
+			ret = TRUE;
+		}
+	}
+
+	g_free (contents);
+
+	return ret;
+}
+
+static gboolean
+load_file_fn (EvolutionImporter *importer,
+	      const char *filename,
+	      const char *folderpath,
+	      void *closure)
+{
+	char *uri_str, *contents;
+	gboolean ret = FALSE;
+	ICalImporter *ici = (ICalImporter *) closure;
+
+	g_return_val_if_fail (ici != NULL, FALSE);
+
+	uri_str = get_uri_from_folder_path (folderpath);
+	check_folder_type (ici, folderpath);
+
+	contents = read_file (filename);
+
+	/* parse the file */
+	if (contents) {
+		icalcomponent *icalcomp;
+
+		icalcomp = icalparser_parse_string (contents);
+		if (icalcomp) {
+			if (cal_client_open_calendar (ici->client, uri_str, TRUE)
+			    && cal_client_open_default_tasks (ici->tasks_client, FALSE)) {
+				ici->icalcomp = icalcomp;
+				ret = TRUE;
+			}
+		}
 	}
+
+	g_free (contents);
+	g_free (uri_str);
+
+	return ret;
 }
 
 BonoboObject *
@@ -228,6 +356,7 @@ ical_importer_new (void)
 
 	ici = g_new0 (ICalImporter, 1);
 	ici->client = cal_client_new ();
+	ici->tasks_client = cal_client_new ();
 	ici->icalcomp = NULL;
 	ici->importer = evolution_importer_new (support_format_fn,
 						load_file_fn,
@@ -239,3 +368,316 @@ ical_importer_new (void)
 
 	return BONOBO_OBJECT (ici->importer);
 }
+
+
+
+/*
+ * vCalendar importer functions.
+ */
+
+static gboolean
+vcal_support_format_fn (EvolutionImporter *importer,
+			const char *filename,
+			void *closure)
+{
+	char *contents;
+	gboolean ret = FALSE;
+
+	contents = read_file (filename);
+
+	/* parse the file */
+	if (contents) {
+		VObject *vcal;
+
+		vcal = Parse_MIME (contents, strlen (contents));
+
+		if (vcal) {
+			icalcomponent *icalcomp;
+
+			icalcomp = icalvcal_convert (vcal);
+		
+			if (icalcomp) {
+				icalcomponent_free (icalcomp);
+				ret = TRUE;
+			}
+
+			cleanVObject (vcal);
+		}
+	}
+
+	g_free (contents);
+
+	return ret;
+}
+
+/* This tries to load in a vCalendar file and convert it to an icalcomponent.
+   It returns NULL on failure. */
+static icalcomponent*
+load_vcalendar_file (const char *filename)
+{
+	icalvcal_defaults defaults = { 0 };
+	icalcomponent *icalcomp = NULL;
+	char *contents;
+
+	defaults.alarm_audio_url = "file://" EVOLUTION_SOUNDDIR "/default_alarm.wav";
+	defaults.alarm_audio_fmttype = "audio/x-wav";
+	defaults.alarm_description = (char*) U_("Reminder!!");
+
+	contents = read_file (filename);
+
+	/* parse the file */
+	if (contents) {
+		VObject *vcal;
+
+		vcal = Parse_MIME (contents, strlen (contents));
+
+		if (vcal) {
+			icalcomp = icalvcal_convert_with_defaults (vcal,
+								   &defaults);
+			cleanVObject (vcal);
+		}
+	}
+
+	g_free (contents);
+
+	return icalcomp;
+}
+
+static gboolean
+vcal_load_file_fn (EvolutionImporter *importer,
+		   const char *filename,
+		   const char *folderpath,
+		   void *closure)
+{
+	char *uri_str;
+	gboolean ret = FALSE;
+	ICalImporter *ici = (ICalImporter *) closure;
+	icalcomponent *icalcomp;
+
+	g_return_val_if_fail (ici != NULL, FALSE);
+
+	uri_str = get_uri_from_folder_path (folderpath);
+	check_folder_type (ici, folderpath);
+
+	icalcomp = load_vcalendar_file (filename);
+	if (icalcomp) {
+		if (cal_client_open_calendar (ici->client, uri_str, TRUE)
+		    && cal_client_open_default_tasks (ici->tasks_client, FALSE)) {
+			ici->icalcomp = icalcomp;
+			ret = TRUE;
+		}
+	}
+
+	g_free (uri_str);
+
+	return ret;
+}
+
+BonoboObject *
+vcal_importer_new (void)
+{
+	ICalImporter *ici;
+
+	ici = g_new0 (ICalImporter, 1);
+	ici->client = cal_client_new ();
+	ici->tasks_client = cal_client_new ();
+	ici->icalcomp = NULL;
+	ici->importer = evolution_importer_new (vcal_support_format_fn,
+						vcal_load_file_fn,
+						process_item_fn,
+						NULL,
+						ici);
+	gtk_signal_connect (GTK_OBJECT (ici->importer), "destroy",
+			    GTK_SIGNAL_FUNC (importer_destroy_cb), ici);
+
+	return BONOBO_OBJECT (ici->importer);
+}
+
+
+
+
+
+
+static void
+gnome_calendar_importer_destroy_cb (GtkObject *object, gpointer user_data)
+{
+	ICalIntelligentImporter *ici = (ICalIntelligentImporter *) user_data;
+
+	g_return_if_fail (ici != NULL);
+
+	g_free (ici);
+}
+
+
+
+static gboolean
+gnome_calendar_can_import_fn (EvolutionIntelligentImporter *ii,
+			      void *closure)
+{
+	char *filename;
+	gboolean gnome_calendar_exists;
+
+	filename = gnome_util_home_file ("user-cal.vcf");
+	gnome_calendar_exists = g_file_exists (filename);
+	g_free (filename);
+
+	return gnome_calendar_exists;
+}
+
+
+static void
+gnome_calendar_import_data_fn (EvolutionIntelligentImporter *ii,
+			       void *closure)
+{
+	ICalIntelligentImporter *ici = closure;
+	icalcomponent *icalcomp = NULL;
+	char *filename;
+	GList *vtodos;
+	CalClient *calendar_client = NULL, *tasks_client = NULL;
+	int t;
+
+	/* If neither is selected, just return. */
+	if (!ici->do_calendar && !ici->do_tasks) {
+		return;
+	}
+
+	/* Try to open the default calendar & tasks folders. */
+	if (ici->do_calendar) {
+		calendar_client = cal_client_new ();
+		if (!cal_client_open_default_calendar (calendar_client, FALSE))
+			goto out;
+	}
+
+	if (ici->do_tasks) {
+		tasks_client = cal_client_new ();
+		if (!cal_client_open_default_tasks (tasks_client, FALSE))
+			goto out;
+	}
+
+	/* Load the Gnome Calendar file and convert to iCalendar. */
+	filename = gnome_util_home_file ("user-cal.vcf");
+	icalcomp = load_vcalendar_file (filename);
+	g_free (filename);
+
+	/* If we couldn't load the file, just return. FIXME: Error message? */
+	if (!icalcomp)
+		goto out;
+
+	/*
+	 * Import the calendar events into the default calendar folder.
+	 */
+	vtodos = prepare_events (icalcomp);
+
+	/* Wait for client to finish opening the calendar & tasks folders. */
+	for (t = 0; t < IMPORTER_TIMEOUT_SECONDS; t++) {
+		CalClientLoadState calendar_state, tasks_state;
+
+		calendar_state = tasks_state = CAL_CLIENT_LOAD_LOADED;
+
+		/* We need this so the CalClient gets notified that the
+		   folder is opened, via Corba. */
+		while (gtk_events_pending ())
+			gtk_main_iteration ();
+
+		if (ici->do_calendar)
+			calendar_state = cal_client_get_load_state (calendar_client);
+
+		if (ici->do_tasks)
+			tasks_state = cal_client_get_load_state (tasks_client);
+
+		if (calendar_state == CAL_CLIENT_LOAD_LOADED
+		    && tasks_state == CAL_CLIENT_LOAD_LOADED)
+			break;
+
+		sleep (1);
+	}
+
+	/* If we timed out, just return. */
+	if (t == IMPORTER_TIMEOUT_SECONDS)
+		goto out;
+
+	/* Import the calendar events. */
+	/* FIXME: What do intelligent importers do about errors? */
+	if (ici->do_calendar)
+		cal_client_update_objects (calendar_client, icalcomp);
+
+
+	/*
+	 * Import the tasks into the default tasks folder.
+	 */
+	prepare_tasks (icalcomp, vtodos);
+	if (ici->do_tasks)
+		cal_client_update_objects (tasks_client, icalcomp);
+
+ out:
+	if (icalcomp)
+		icalcomponent_free (icalcomp);
+	if (calendar_client)
+		gtk_object_unref (GTK_OBJECT (calendar_client));
+	if (tasks_client)
+		gtk_object_unref (GTK_OBJECT (tasks_client));
+}
+
+
+/* Fun with aggregation */
+static void
+checkbox_toggle_cb (GtkToggleButton *tb,
+		    gboolean *do_item)
+{
+	*do_item = gtk_toggle_button_get_active (tb);
+}
+
+static BonoboControl *
+create_checkboxes_control (ICalIntelligentImporter *ici)
+{
+	GtkWidget *hbox, *calendar_checkbox, *tasks_checkbox;
+	BonoboControl *control;
+
+	hbox = gtk_hbox_new (FALSE, 2);
+
+	calendar_checkbox = gtk_check_button_new_with_label (_("Calendar Events"));
+	gtk_signal_connect (GTK_OBJECT (calendar_checkbox), "toggled",
+			    GTK_SIGNAL_FUNC (checkbox_toggle_cb),
+			    &ici->do_calendar);
+	gtk_box_pack_start (GTK_BOX (hbox), calendar_checkbox,
+			    FALSE, FALSE, 0);
+
+	tasks_checkbox = gtk_check_button_new_with_label (_("Tasks"));
+	gtk_signal_connect (GTK_OBJECT (tasks_checkbox), "toggled",
+			    GTK_SIGNAL_FUNC (checkbox_toggle_cb),
+			    &ici->do_tasks);
+	gtk_box_pack_start (GTK_BOX (hbox), tasks_checkbox,
+			    FALSE, FALSE, 0);
+
+	gtk_widget_show_all (hbox);
+	control = bonobo_control_new (hbox);
+	return control;
+}
+
+BonoboObject *
+gnome_calendar_importer_new (void)
+{
+	EvolutionIntelligentImporter *importer;
+	ICalIntelligentImporter *ici;
+	BonoboControl *control;
+	char *message = N_("Evolution has found Gnome Calendar files.\n"
+			   "Would you like to import them into Evolution?");
+
+	ici = g_new0 (ICalIntelligentImporter, 1);
+
+	importer = evolution_intelligent_importer_new (gnome_calendar_can_import_fn,
+						       gnome_calendar_import_data_fn,
+						       _("Gnome Calendar"),
+						       _(message),
+						       ici);
+
+
+	gtk_signal_connect (GTK_OBJECT (importer), "destroy",
+			    GTK_SIGNAL_FUNC (gnome_calendar_importer_destroy_cb), ici);
+
+	control = create_checkboxes_control (ici);
+	bonobo_object_add_interface (BONOBO_OBJECT (importer),
+				     BONOBO_OBJECT (control));
+
+	return BONOBO_OBJECT (importer);
+}