New files with a simple sequence to migrate the task components from the

2001-01-18  Federico Mena Quintero  <federico@ximian.com>

	* gui/tasks-migrate.[ch]: New files with a simple sequence to
	migrate the task components from the old calendar folder into the
	new tasks folder.

	* gui/component-factory.c (owner_set_cb): Call tasks_migrate()
	once evolution_dir is set.  It sucks to have to do this here.

	* cal-client/cal-client.c (cal_client_get_uids): In the inline
	docs, indicate how to free the return value.
	(cal_opened_cb): Ahem, moved assertion to the right place.  Also,
	ref() and unref() around our own signal emission because we are
	not inside a signal handler, rather a simple callback from the
	listener object; we want to have a chance to clean up even if the
	client is unrefed during the emission.

	* gui/Makefile.am (evolution_calendar_SOURCES): Added
	tasks-migrate.[ch] to the list of sources.

2001-01-17  Federico Mena Quintero  <federico@ximian.com>

	* gui/event-editor.c (init_widgets): Use
	e_calendar_item_set_max_days_sel() instead of setting GTK+ object
	arguments.

	* gui/e-day-view.c (e_day_view_set_cal_client): Oops, we had a
	reversed test for the client being loaded.

	* gui/tag-calendar.c (tag_calendar_by_client): Fixed similarly
	reversed test.

svn path=/trunk/; revision=7622

14 files changed, 414 insertions, 1426 deletions

diff --git a/calendar/ChangeLog b/calendar/ChangeLog
index 000cb7756d..caab58dc82 100644
--- a/calendar/ChangeLog
+++ b/calendar/ChangeLog
@@ -1,3 +1,35 @@
+2001-01-18  Federico Mena Quintero  <federico@ximian.com>
+
+	* gui/tasks-migrate.[ch]: New files with a simple sequence to
+	migrate the task components from the old calendar folder into the
+	new tasks folder.
+
+	* gui/component-factory.c (owner_set_cb): Call tasks_migrate()
+	once evolution_dir is set.  It sucks to have to do this here.
+
+	* cal-client/cal-client.c (cal_client_get_uids): In the inline
+	docs, indicate how to free the return value.
+	(cal_opened_cb): Ahem, moved assertion to the right place.  Also,
+	ref() and unref() around our own signal emission because we are
+	not inside a signal handler, rather a simple callback from the
+	listener object; we want to have a chance to clean up even if the
+	client is unrefed during the emission.
+
+	* gui/Makefile.am (evolution_calendar_SOURCES): Added
+	tasks-migrate.[ch] to the list of sources.
+
+2001-01-17  Federico Mena Quintero  <federico@ximian.com>
+
+	* gui/event-editor.c (init_widgets): Use
+	e_calendar_item_set_max_days_sel() instead of setting GTK+ object
+	arguments.
+
+	* gui/e-day-view.c (e_day_view_set_cal_client): Oops, we had a
+	reversed test for the client being loaded.
+
+	* gui/tag-calendar.c (tag_calendar_by_client): Fixed similarly
+	reversed test.
+
 2001-01-17  Damon Chaplin  <damon@helixcode.com>
 
 	* gui/e-week-view*.c
diff --git a/calendar/cal-client/cal-client.c b/calendar/cal-client/cal-client.c
index a89cfae40c..0012ec3706 100644
--- a/calendar/cal-client/cal-client.c
+++ b/calendar/cal-client/cal-client.c
@@ -347,7 +347,13 @@ cal_opened_cb (CalListener *listener,
 
  out:
 
-	g_assert (priv->load_state != CAL_CLIENT_LOAD_LOADING);
+	/* We are *not* inside a signal handler (this is just a simple callback
+	 * called from the listener), so there is not a temporary reference to
+	 * the client object.  We ref() so that we can safely emit our own
+	 * signal and clean up.
+	 */
+
+	gtk_object_ref (GTK_OBJECT (client));
 
 	gtk_signal_emit (GTK_OBJECT (client), cal_client_signals[CAL_OPENED],
 			 client_status);
@@ -357,6 +363,10 @@ cal_opened_cb (CalListener *listener,
 		g_free (priv->uri);
 		priv->uri = NULL;
 	}
+
+	g_assert (priv->load_state != CAL_CLIENT_LOAD_LOADING);
+
+	gtk_object_unref (GTK_OBJECT (client));
 }
 
 /* Handle the obj_updated signal from the listener */
@@ -713,7 +723,8 @@ build_uid_list (GNOME_Evolution_Calendar_CalObjUIDSeq *seq)
  * Queries a calendar for a list of unique identifiers corresponding to calendar
  * objects whose type matches one of the types specified in the @type flags.
  *
- * Return value: A list of strings that are the sought UIDs.
+ * Return value: A list of strings that are the sought UIDs.  This should be
+ * freed using the cal_obj_uid_list_free() function.
  **/
 GList *
 cal_client_get_uids (CalClient *client, CalObjType type)
diff --git a/calendar/gui/Makefile.am b/calendar/gui/Makefile.am
index 0f000de3f5..9a0a6a1564 100644
--- a/calendar/gui/Makefile.am
+++ b/calendar/gui/Makefile.am
@@ -112,6 +112,8 @@ evolution_calendar_SOURCES =			\
 	tasks-control-factory.h			\
 	tasks-control.c				\
 	tasks-control.h				\
+	tasks-migrate.c				\
+	tasks-migrate.h				\
 	weekday-picker.c			\
 	weekday-picker.h			\
 	widget-util.c				\
diff --git a/calendar/gui/alarm-notify/alarm-notify.c b/calendar/gui/alarm-notify/alarm-notify.c
index fc87ad878d..60346ba801 100644
--- a/calendar/gui/alarm-notify/alarm-notify.c
+++ b/calendar/gui/alarm-notify/alarm-notify.c
@@ -30,7 +30,8 @@
 
 /* Private part of the AlarmNotify structure */
 struct _AlarmNotifyPrivate {
-	/* FIXME */
+	/* Mapping from GnomeVFSURIs to loaded clients */
+	GHashTable *uri_client_hash;
 };
 
 
@@ -140,14 +141,18 @@ alarm_notify_destroy (GtkObject *object)
 /* AlarmNotify::addCalendar method */
 static void
 AlarmNotify_addCalendar (PortableServer_Servant servant,
-			 const CORBA_char *uri,
+			 const CORBA_char *str_uri,
 			 CORBA_Environment *ev)
 {
 	AlarmNotify *an;
+	GnomeVFSURI *uri;
+	CalClient *client;
 
 	an = ALARM_NOTIFY (bonobo_object_from_servant (servant));
 
-	/* FIXME */
+	uri = gnome_vfs_uri_new (str_uri);
+	if (!uri) {
+	}
 }
 
 /* AlarmNotify::removeCalendar method */
diff --git a/calendar/gui/calendar-component.c b/calendar/gui/calendar-component.c
index 4f98cbab6b..5226c2480d 100644
--- a/calendar/gui/calendar-component.c
+++ b/calendar/gui/calendar-component.c
@@ -32,6 +32,7 @@
 #include "calendar-config.h"
 #include "calendar-summary.h"
 #include "tasks-control.h"
+#include "tasks-migrate.h"
 
 
 
@@ -107,9 +108,17 @@ owner_set_cb (EvolutionShellComponent *shell_component,
 	      const char *evolution_homedir,
 	      gpointer user_data)
 {
+	static gboolean migrated = FALSE;
+
+	owner_count ++;
 	evolution_dir = g_strdup (evolution_homedir);
+
 	calendar_config_init ();
-	owner_count ++;
+
+	if (!migrated) {
+		tasks_migrate ();
+		migrated = TRUE;
+	}
 }
 
 static void
diff --git a/calendar/gui/component-factory.c b/calendar/gui/component-factory.c
index 4f98cbab6b..5226c2480d 100644
--- a/calendar/gui/component-factory.c
+++ b/calendar/gui/component-factory.c
@@ -32,6 +32,7 @@
 #include "calendar-config.h"
 #include "calendar-summary.h"
 #include "tasks-control.h"
+#include "tasks-migrate.h"
 
 
 
@@ -107,9 +108,17 @@ owner_set_cb (EvolutionShellComponent *shell_component,
 	      const char *evolution_homedir,
 	      gpointer user_data)
 {
+	static gboolean migrated = FALSE;
+
+	owner_count ++;
 	evolution_dir = g_strdup (evolution_homedir);
+
 	calendar_config_init ();
-	owner_count ++;
+
+	if (!migrated) {
+		tasks_migrate ();
+		migrated = TRUE;
+	}
 }
 
 static void
diff --git a/calendar/gui/e-day-view.c b/calendar/gui/e-day-view.c
index 47c19dff75..9943e86066 100644
--- a/calendar/gui/e-day-view.c
+++ b/calendar/gui/e-day-view.c
@@ -1511,7 +1511,7 @@ e_day_view_set_cal_client	(EDayView	*day_view,
 	day_view->client = client;
 
 	if (day_view->client) {
-		if (cal_client_get_load_state (day_view->client) == CAL_CLIENT_LOAD_LOADED)
+		if (cal_client_get_load_state (day_view->client) != CAL_CLIENT_LOAD_LOADED)
 			gtk_signal_connect (GTK_OBJECT (day_view->client), "cal_opened",
 					    GTK_SIGNAL_FUNC (cal_opened_cb), day_view);
 
diff --git a/calendar/gui/event-editor.c b/calendar/gui/event-editor.c
index 350de507e7..8b7e04c1c7 100644
--- a/calendar/gui/event-editor.c
+++ b/calendar/gui/event-editor.c
@@ -1138,9 +1138,7 @@ init_widgets (EventEditor *ee)
 	gtk_signal_connect (GTK_OBJECT (ecal->calitem), "date_range_changed",
 			    GTK_SIGNAL_FUNC (recur_preview_date_range_changed_cb), ee);
 	calendar_config_configure_e_calendar (ecal);
-	gnome_canvas_item_set (GNOME_CANVAS_ITEM (ecal->calitem),
-			       "maximum_days_selected", 0,
-			       NULL);
+	e_calendar_item_set_max_days_sel (ecal->calitem, 0);
 	gtk_container_add (GTK_CONTAINER (priv->recurrence_preview_bin),
 			   priv->recurrence_preview_calendar);
 	gtk_widget_show (priv->recurrence_preview_calendar);
diff --git a/calendar/gui/gnome-month-item.c b/calendar/gui/gnome-month-item.c
deleted file mode 100644
index 58e393e4ee..0000000000
--- a/calendar/gui/gnome-month-item.c
+++ /dev/null
@@ -1,1246 +0,0 @@
-/* General-purpose monthly calendar canvas item for GNOME
- *
- * Copyright (C) 1998 Red Hat Software, Inc.
- *
- * Author: Federico Mena <federico@nuclecu.unam.mx>
- */
-
-#include <config.h>
-#include <math.h>
-#include <time.h>
-#include <gnome.h>
-#include "gnome-month-item.h"
-
-
-#define DEFAULT_FONT "-*-helvetica-medium-r-normal--10-*-*-*-p-*-*-*"
-
-
-/* Number of days in a month, for normal and leap years */
-static const int days_in_month[2][12] = {
-	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
-	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-/* The weird month of September 1752, where 3 Sep through 13 Sep were eliminated due to the
- * Gregorian reformation.
- */
-static const int sept_1752[42] = {
-	 0,  0,  1,  2, 14, 15, 16,
-	17, 18, 19, 20, 21, 22, 23,
-	24, 25, 26, 27, 28, 29, 30,
-	 0,  0,  0,  0,  0,  0,  0,
-	 0,  0,  0,  0,  0,  0,  0,
-	 0,  0,  0,  0,  0,  0,  0
-};
-
-#define REFORMATION_DAY 639787		/* First day of the reformation, counted from 1 Jan 1 */
-#define MISSING_DAYS 11			/* They corrected out 11 days */
-#define THURSDAY 4			/* First day of reformation */
-#define SATURDAY 6			/* Offset value; 1 Jan 1 was a Saturday */
-#define SEPT_1752_START 2		/* Start day within month */
-#define SEPT_1752_END 20		/* End day within month */
-
-
-enum {
-	ARG_0,
-	ARG_YEAR,
-	ARG_MONTH,
-	ARG_X,
-	ARG_Y,
-	ARG_WIDTH,
-	ARG_HEIGHT,
-	ARG_ANCHOR,
-	ARG_HEAD_PADDING,
-	ARG_DAY_PADDING,
-	ARG_DAY_NAMES,
-	ARG_HEADING_HEIGHT,
-	ARG_HEADING_ANCHOR,
-	ARG_DAY_ANCHOR,
-	ARG_START_ON_MONDAY,
-	ARG_HEAD_FONT,
-	ARG_HEAD_FONTSET,
-	ARG_HEAD_FONT_GDK,
-	ARG_DAY_FONT,
-	ARG_DAY_FONTSET,
-	ARG_DAY_FONT_GDK,
-	ARG_HEAD_COLOR,
-	ARG_HEAD_COLOR_GDK,
-	ARG_OUTLINE_COLOR,
-	ARG_OUTLINE_COLOR_GDK,
-	ARG_DAY_BOX_COLOR,
-	ARG_DAY_BOX_COLOR_GDK,
-	ARG_DAY_COLOR,
-	ARG_DAY_COLOR_GDK
-};
-
-
-static void gnome_month_item_class_init (GnomeMonthItemClass *class);
-static void gnome_month_item_init       (GnomeMonthItem      *mitem);
-static void gnome_month_item_destroy    (GtkObject           *object);
-static void gnome_month_item_set_arg    (GtkObject           *object,
-					 GtkArg              *arg,
-					 guint                arg_id);
-static void gnome_month_item_get_arg    (GtkObject           *object,
-					 GtkArg              *arg,
-					 guint                arg_id);
-
-
-
-static GnomeCanvasGroupClass *parent_class;
-
-
-GtkType
-gnome_month_item_get_type (void)
-{
-	static GtkType month_item_type = 0;
-
-	if (!month_item_type) {
-		GtkTypeInfo month_item_info = {
-			"GnomeMonthItem",
-			sizeof (GnomeMonthItem),
-			sizeof (GnomeMonthItemClass),
-			(GtkClassInitFunc) gnome_month_item_class_init,
-			(GtkObjectInitFunc) gnome_month_item_init,
-			NULL, /* reserved_1 */
-			NULL, /* reserved_2 */
-			(GtkClassInitFunc) NULL
-		};
-
-		month_item_type = gtk_type_unique (gnome_canvas_group_get_type (), &month_item_info);
-	}
-
-	return month_item_type;
-}
-
-static void
-gnome_month_item_class_init (GnomeMonthItemClass *class)
-{
-	GtkObjectClass *object_class;
-	GnomeCanvasItemClass *item_class;
-
-	object_class = (GtkObjectClass *) class;
-	item_class = (GnomeCanvasItemClass *) class;
-
-	parent_class = gtk_type_class (gnome_canvas_group_get_type ());
-
-	gtk_object_add_arg_type ("GnomeMonthItem::year", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_YEAR);
-	gtk_object_add_arg_type ("GnomeMonthItem::month", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_MONTH);
-	gtk_object_add_arg_type ("GnomeMonthItem::x", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_X);
-	gtk_object_add_arg_type ("GnomeMonthItem::y", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_Y);
-	gtk_object_add_arg_type ("GnomeMonthItem::width", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_WIDTH);
-	gtk_object_add_arg_type ("GnomeMonthItem::height", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_HEIGHT);
-	gtk_object_add_arg_type ("GnomeMonthItem::anchor", GTK_TYPE_ANCHOR_TYPE, GTK_ARG_READWRITE, ARG_ANCHOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_padding", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_HEAD_PADDING);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_padding", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_DAY_PADDING);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_names", GTK_TYPE_POINTER, GTK_ARG_WRITABLE, ARG_DAY_NAMES);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_height", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_HEADING_HEIGHT);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_anchor", GTK_TYPE_ANCHOR_TYPE, GTK_ARG_READWRITE, ARG_HEADING_ANCHOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_anchor", GTK_TYPE_ANCHOR_TYPE, GTK_ARG_READWRITE, ARG_DAY_ANCHOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::start_on_monday", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_START_ON_MONDAY);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_font", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_HEAD_FONT);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_fontset", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_HEAD_FONTSET);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_font_gdk", GTK_TYPE_GDK_FONT, GTK_ARG_READWRITE, ARG_HEAD_FONT_GDK);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_font", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_DAY_FONT);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_fontset", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_DAY_FONTSET);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_font_gdk", GTK_TYPE_GDK_FONT, GTK_ARG_READWRITE, ARG_DAY_FONT_GDK);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_color", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_HEAD_COLOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::heading_color_gdk", GTK_TYPE_GDK_COLOR, GTK_ARG_READWRITE, ARG_HEAD_COLOR_GDK);
-	gtk_object_add_arg_type ("GnomeMonthItem::outline_color", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_OUTLINE_COLOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::outline_color_gdk", GTK_TYPE_GDK_COLOR, GTK_ARG_READWRITE, ARG_OUTLINE_COLOR_GDK);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_box_color", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_DAY_BOX_COLOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_box_color_gdk", GTK_TYPE_GDK_COLOR, GTK_ARG_READWRITE, ARG_DAY_BOX_COLOR_GDK);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_color", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_DAY_COLOR);
-	gtk_object_add_arg_type ("GnomeMonthItem::day_color_gdk", GTK_TYPE_GDK_COLOR, GTK_ARG_READWRITE, ARG_DAY_COLOR_GDK);
-
-	object_class->destroy = gnome_month_item_destroy;
-	object_class->set_arg = gnome_month_item_set_arg;
-	object_class->get_arg = gnome_month_item_get_arg;
-}
-
-/* Calculates the minimum heading height based on the heading font size and padding.  It also
- * calculates the minimum width of the month item based on the width of the headings.
- */
-static void
-check_heading_sizes (GnomeMonthItem *mitem)
-{
-	double m_height;
-	double m_width;
-	int width;
-	int max_width;
-	int i;
-
-	/* Calculate minimum height */
-
-	m_height = mitem->head_font->ascent + mitem->head_font->descent + 2 * mitem->head_padding;
-
-	if (mitem->head_height < m_height)
-		mitem->head_height = m_height;
-	
-	/* Go through each heading and remember the widest one */
-
-	max_width = 0;
-
-	for (i = 0; i < 7; i++) {
-		width = gdk_string_width (mitem->head_font, mitem->day_names[i]);
-		if (max_width < width)
-			max_width = width;
-	}
-
-	m_width = 7 * (max_width + 2 * mitem->head_padding);
-
-	if (mitem->width < m_width)
-		mitem->width = m_width;
-}
-
-/* Calculates the minimum width and height of the month item based on the day font size and padding.
- * Assumes that the minimum heading height has already been computed.
- */
-static void
-check_day_sizes (GnomeMonthItem *mitem)
-{
-	double m_height;
-	double m_width;
-	int width;
-	int max_width;
-	char buf[100];
-	int i;
-
-	/* Calculate minimum height */
-
-	m_height = mitem->head_height + 6 * (mitem->day_font->ascent + mitem->day_font->descent + 2 * mitem->day_padding);
-
-	if (mitem->height < m_height)
-		mitem->height = m_height;
-
-	/* Calculate minimum width */
-
-	max_width = 0;
-
-	for (i = 1; i < 32; i++) {
-		sprintf (buf, "%d", i);
-		width = gdk_string_width (mitem->day_font, buf);
-		if (max_width < width)
-			max_width = width;
-	}
-
-	m_width = 7 * (max_width + 2 * mitem->day_padding);
-
-	if (mitem->width < m_width)
-		mitem->width = m_width;
-}
-
-/* Calculates the minimum size of the month item based on the font sizes and paddings.  If the
- * current size of the month item is smaller than the required minimum size, this function will
- * change the size to the appropriate values.
- */
-static void
-check_sizes (GnomeMonthItem *mitem)
-{
-	check_heading_sizes (mitem);
-	check_day_sizes (mitem);
-}
-
-/* Recalculates the position of the toplevel calendar group based on the logical position and anchor */
-static void
-reanchor (GnomeMonthItem *mitem)
-{
-	double x, y;
-
-	x = mitem->x;
-	y = mitem->y;
-
-	switch (mitem->anchor) {
-	case GTK_ANCHOR_NW:
-	case GTK_ANCHOR_W:
-	case GTK_ANCHOR_SW:
-		break;
-
-	case GTK_ANCHOR_N:
-	case GTK_ANCHOR_CENTER:
-	case GTK_ANCHOR_S:
-		x -= mitem->width / 2;
-		break;
-
-	case GTK_ANCHOR_NE:
-	case GTK_ANCHOR_E:
-	case GTK_ANCHOR_SE:
-		x -= mitem->width;
-		break;
-	}
-
-	switch (mitem->anchor) {
-	case GTK_ANCHOR_NW:
-	case GTK_ANCHOR_N:
-	case GTK_ANCHOR_NE:
-		break;
-
-	case GTK_ANCHOR_W:
-	case GTK_ANCHOR_CENTER:
-	case GTK_ANCHOR_E:
-		y -= mitem->height / 2;
-		break;
-
-	case GTK_ANCHOR_SW:
-	case GTK_ANCHOR_S:
-	case GTK_ANCHOR_SE:
-		y -= mitem->height;
-		break;
-	}
-
-	/* Explicitly use the canvas group class prefix since the month item class has x and y
-	 * arguments as well.
-	 */
-
-	gnome_canvas_item_set (GNOME_CANVAS_ITEM (mitem),
-			       "GnomeCanvasGroup::x", x,
-			       "GnomeCanvasGroup::y", y,
-			       NULL);
-}
-
-/* Takes an anchor specification and the corners of a rectangle, and returns an anchored point with
- * respect to that rectangle.
- */
-static void
-get_label_anchor (GtkAnchorType anchor, double x1, double y1, double x2, double y2, double *x, double *y)
-{
-	switch (anchor) {
-	case GTK_ANCHOR_NW:
-	case GTK_ANCHOR_W:
-	case GTK_ANCHOR_SW:
-		*x = x1;
-		break;
-
-	case GTK_ANCHOR_N:
-	case GTK_ANCHOR_CENTER:
-	case GTK_ANCHOR_S:
-		*x = (x1 + x2) / 2.0;
-		break;
-
-	case GTK_ANCHOR_NE:
-	case GTK_ANCHOR_E:
-	case GTK_ANCHOR_SE:
-		*x = x2;
-		break;
-	}
-
-	switch (anchor) {
-	case GTK_ANCHOR_NW:
-	case GTK_ANCHOR_N:
-	case GTK_ANCHOR_NE:
-		*y = y1;
-		break;
-
-	case GTK_ANCHOR_W:
-	case GTK_ANCHOR_CENTER:
-	case GTK_ANCHOR_E:
-		*y = (y1 + y2) / 2.0;
-		break;
-
-	case GTK_ANCHOR_SW:
-	case GTK_ANCHOR_S:
-	case GTK_ANCHOR_SE:
-		*y = y2;
-		break;
-	}
-}
-
-/* Resets the position of the day name headings in the calendar */
-static void
-reshape_headings (GnomeMonthItem *mitem)
-{
-	double width;
-	int i;
-	double x, y;
-
-	width = mitem->width / 7;
-
-	for (i = 0; i < 7; i++) {
-		/* Group */
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_GROUP + i],
-				       "x", width * i,
-				       "y", 0.0,
-				       NULL);
-
-		/* Box */
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_BOX + i],
-				       "x1", 0.0,
-				       "y1", 0.0,
-				       "x2", width,
-				       "y2", mitem->head_height,
-				       NULL);
-
-		/* Label */
-		get_label_anchor (mitem->head_anchor,
-				  mitem->head_padding,
-				  mitem->head_padding,
-				  width - mitem->head_padding,
-				  mitem->head_height - mitem->head_padding,
-				  &x, &y);
-
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_LABEL + i],
-				       "x", x,
-				       "y", y,
-				       "anchor", mitem->head_anchor,
-				       NULL);
-	}
-}
-
-/* Resets the position of the days in the calendar */
-static void
-reshape_days (GnomeMonthItem *mitem)
-{
-	double width, height;
-	double x, y;
-	int row, col;
-	int i;
-
-	width = mitem->width / 7;
-	height = (mitem->height - mitem->head_height) / 6;
-
-	i = 0;
-
-	for (row = 0; row < 6; row++)
-		for (col = 0; col < 7; col++) {
-			/* Group */
-			gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_GROUP + i],
-					       "x", width * col,
-					       "y", mitem->head_height + height * row,
-					       NULL);
-
-			/* Box */
-			gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_BOX + i],
-					       "x1", 0.0,
-					       "y1", 0.0,
-					       "x2", width,
-					       "y2", height,
-					       NULL);
-
-			/* Label */
-			get_label_anchor (mitem->day_anchor,
-					  mitem->day_padding,
-					  mitem->day_padding,
-					  width - mitem->day_padding,
-					  height - mitem->day_padding,
-					  &x, &y);
-
-			gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-					       "x", x,
-					       "y", y,
-					       "anchor", mitem->day_anchor,
-					       NULL);
-
-			i++;
-		}
-}
-
-/* Changes the positions and resizes the items in the calendar to match the new size of the
- * calendar.
- */
-static void
-reshape (GnomeMonthItem *mitem)
-{
-	check_sizes (mitem);
-	reanchor (mitem);
-	reshape_headings (mitem);
-	reshape_days (mitem);
-}
-
-/* Sets the font for all the day headings */
-static void
-set_head_font (GnomeMonthItem *mitem)
-{
-	int i;
-
-	for (i = 0; i < 7; i++)
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_LABEL + i],
-				       "font_gdk", mitem->head_font,
-				       NULL);
-}
-
-/* Sets the color for all the headings */
-static void
-set_head_color (GnomeMonthItem *mitem)
-{
-	int i;
-	GdkColor outline;
-	GdkColor head;
-
-	outline.pixel = mitem->outline_pixel;
-	head.pixel = mitem->head_pixel;
-
-	for (i = 0; i < 7; i++) {
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_BOX + i],
-				       "fill_color_gdk", &outline,
-				       NULL);
-
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_LABEL + i],
-				       "fill_color_gdk", &head,
-				       NULL);
-	}
-}
-
-/* Creates the items for the day name headings */
-static void
-create_headings (GnomeMonthItem *mitem)
-{
-	int i;
-
-	/* Just create the items; they will be positioned and configured by a call to reshape() */
-
-	for (i = 0; i < 7; i++) {
-		/* Group */
-		mitem->items[GNOME_MONTH_ITEM_HEAD_GROUP + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem),
-					       gnome_canvas_group_get_type (),
-					       NULL);
-
-		/* Box */
-		mitem->items[GNOME_MONTH_ITEM_HEAD_BOX + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem->items[GNOME_MONTH_ITEM_HEAD_GROUP + i]),
-					       gnome_canvas_rect_get_type (),
-					       NULL);
-
-		/* Label */
-		mitem->items[GNOME_MONTH_ITEM_HEAD_LABEL + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem->items[GNOME_MONTH_ITEM_HEAD_GROUP + i]),
-					       gnome_canvas_text_get_type (),
-					       NULL);
-	}
-
-	set_head_font (mitem);
-	set_head_color (mitem);
-}
-
-/* Returns the number of leap years since year 1 up to (but not including) the specified year */
-static int
-leap_years_up_to (int year)
-{
-	return (year / 4					/* trivial leapness */
-		- ((year > 1700) ? (year / 100 - 17) : 0)	/* minus centuries since 1700 */
-		+ ((year > 1600) ? ((year - 1600) / 400) : 0));	/* plus centuries since 1700 divisible by 400 */
-}
-
-/* Returns whether the specified year is a leap year */
-static int
-is_leap_year (int year)
-{
-	if (year <= 1752)
-		return !(year % 4);
-	else
-		return (!(year % 4) && (year % 100)) || !(year % 400);
-}
-
-/* Returns the 1-based day number within the year of the specified date */
-static int
-day_in_year (int day, int month, int year)
-{
-	int is_leap, i;
-
-	is_leap = is_leap_year (year);
-
-	for (i = 0; i < month; i++)
-		day += days_in_month [is_leap][i];
-
-	return day;
-}
-
-/* Returns the day of the week (zero-based, zero is Sunday) for the specified date.  For the days
- * that were removed on the Gregorian reformation, it returns Thursday.
- */
-static int
-day_in_week (int day, int month, int year)
-{
-	int n;
-
-	n = (year - 1) * 365 + leap_years_up_to (year - 1) + day_in_year (day, month, year);
-
-	if (n < REFORMATION_DAY)
-		return (n - 1 + SATURDAY) % 7;
-
-	if (n >= (REFORMATION_DAY + MISSING_DAYS))
-		return (n - 1 + SATURDAY - MISSING_DAYS) % 7;
-
-	return THURSDAY;
-}
-
-/* Fills the 42-element days array with the day numbers for the specified month.  Slots outside the
- * bounds of the month are filled with zeros.  The starting and ending indexes of the days are
- * returned in the start and end arguments.
- */
-static void
-build_month (int month, int year, int start_on_monday, int *days, int *start, int *end)
-{
-	int i;
-	int d_month, d_week;
-
-	/* Note that months are zero-based, so September is month 8 */
-
-	if ((year == 1752) && (month == 8)) {
-		memcpy (days, sept_1752, 42 * sizeof (int));
-
-		if (start)
-			*start = SEPT_1752_START;
-
-		if (end)
-			*end = SEPT_1752_END;
-
-		return;
-	}
-
-	for (i = 0; i < 42; i++)
-		days[i] = 0;
-
-	d_month = days_in_month[is_leap_year (year)][month];
-	d_week = day_in_week (1, month, year);
-
-	if (start_on_monday)
-		d_week = (d_week + 6) % 7;
-
-	for (i = 0; i < d_month; i++)
-		days[d_week + i] = i + 1;
-
-	if (start)
-		*start = d_week;
-
-	if (end)
-		*end = d_week + d_month - 1;
-}
-
-/* Set the day numbers in the monthly calendar */
-static void
-set_days (GnomeMonthItem *mitem)
-{
-	int i;
-	int start, end;
-	char buf[100];
-
-	build_month (mitem->month, mitem->year, mitem->start_on_monday, mitem->day_numbers, &start, &end);
-
-	/* Clear days before start of month */
-
-	for (i = 0; i < start; i++)
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-				       "text", NULL,
-				       NULL);
-
-	/* Set days of month */
-
-	for (; start <= end; start++, i++) {
-		sprintf (buf, "%d", mitem->day_numbers[start]);
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-				       "text", buf,
-				       NULL);
-	}
-
-	/* Clear days after end of month */
-
-	for (; i < 42; i++)
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-				       "text", NULL,
-				       NULL);
-}
-
-/* Sets the font for all the day numbers */
-static void
-set_day_font (GnomeMonthItem *mitem)
-{
-	int i;
-
-	for (i = 0; i < 42; i++)
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-				       "font_gdk", mitem->day_font,
-				       NULL);
-}
-
-/* Sets the color for all the day items */
-static void
-set_day_color (GnomeMonthItem *mitem)
-{
-	int i;
-	GdkColor outline;
-	GdkColor day_box;
-	GdkColor day;
-
-	outline.pixel = mitem->outline_pixel;
-	day_box.pixel = mitem->day_box_pixel;
-	day.pixel = mitem->day_pixel;
-
-	for (i = 0; i < 42; i++) {
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_BOX + i],
-				       "outline_color_gdk", &outline,
-				       "fill_color_gdk", &day_box,
-				       NULL);
-
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i],
-				       "fill_color_gdk", &day,
-				       NULL);
-	}
-}
-
-/* Creates the items for the days */
-static void
-create_days (GnomeMonthItem *mitem)
-{
-	int i;
-
-	/* Just create the items; they will be positioned and configured by a call to reshape() */
-
-	for (i = 0; i < 42; i++) {
-		/* Group */
-		mitem->items[GNOME_MONTH_ITEM_DAY_GROUP + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem),
-					       gnome_canvas_group_get_type (),
-					       NULL);
-
-		/* Box */
-		mitem->items[GNOME_MONTH_ITEM_DAY_BOX + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem->items[GNOME_MONTH_ITEM_DAY_GROUP + i]),
-					       gnome_canvas_rect_get_type (),
-					       NULL);
-
-		/* Label */
-		mitem->items[GNOME_MONTH_ITEM_DAY_LABEL + i] =
-			gnome_canvas_item_new (GNOME_CANVAS_GROUP (mitem->items[GNOME_MONTH_ITEM_DAY_GROUP + i]),
-					       gnome_canvas_text_get_type (),
-					       NULL);
-	}
-
-	set_day_font (mitem);
-	set_day_color (mitem);
-	set_days (mitem);
-}
-
-/* Resets the text of the day name headings */
-static void
-set_day_names (GnomeMonthItem *mitem)
-{
-	int i;
-
-	for (i = 0; i < 7; i++)
-		gnome_canvas_item_set (mitem->items[GNOME_MONTH_ITEM_HEAD_LABEL + i],
-				       "text", mitem->day_names[mitem->start_on_monday ? ((i + 1) % 7) : i],
-				       NULL);
-}
-
-/* Creates all the canvas items that make up the calendar */
-static void
-create_items (GnomeMonthItem *mitem)
-{
-	mitem->items = g_new (GnomeCanvasItem *, GNOME_MONTH_ITEM_LAST);
-
-	create_headings (mitem);
-	create_days (mitem);
-
-	/* Initialize by default to three-letter day names */
-
-	mitem->day_names[0] = g_strdup (_("Sun"));
-	mitem->day_names[1] = g_strdup (_("Mon"));
-	mitem->day_names[2] = g_strdup (_("Tue"));
-	mitem->day_names[3] = g_strdup (_("Wed"));
-	mitem->day_names[4] = g_strdup (_("Thu"));
-	mitem->day_names[5] = g_strdup (_("Fri"));
-	mitem->day_names[6] = g_strdup (_("Sat"));
-	
-	set_day_names (mitem);
-	reshape (mitem);
-}
-
-static void
-gnome_month_item_init (GnomeMonthItem *mitem)
-{
-	time_t t;
-	struct tm tm;
-
-	/* Initialize to the current month by default */
-
-	t = time (NULL);
-	tm = *localtime (&t);
-
-	mitem->year = tm.tm_year + 1900;
-	mitem->month = tm.tm_mon;
-
-	mitem->x = 0.0;
-	mitem->y = 0.0;
-	mitem->width = 150.0; /* not unreasonable defaults, I hope */
-	mitem->height = 100.0;
-	mitem->anchor = GTK_ANCHOR_NW;
-	mitem->head_padding = 0.0;
-	mitem->day_padding = 2.0;
-	mitem->head_height = 14.0;
-	mitem->head_anchor = GTK_ANCHOR_CENTER;
-	mitem->day_anchor = GTK_ANCHOR_CENTER;
-
-	/* Load the default fonts */
-
-	mitem->head_font = gdk_font_load (DEFAULT_FONT);
-	if (!mitem->head_font) {
-		mitem->head_font = gdk_font_load ("fixed");
-		g_assert (mitem->head_font != NULL);
-	}
-
-	mitem->day_font = gdk_font_load (DEFAULT_FONT);
-	if (!mitem->day_font) {
-		mitem->day_font = gdk_font_load ("fixed");
-		g_assert (mitem->day_font != NULL);
-	}
-}
-
-GnomeCanvasItem *
-gnome_month_item_new (GnomeCanvasGroup *parent)
-{
-	GnomeMonthItem *mitem;
-
-	g_return_val_if_fail (parent != NULL, NULL);
-	g_return_val_if_fail (GNOME_IS_CANVAS_GROUP (parent), NULL);
-
-	mitem = GNOME_MONTH_ITEM (gnome_canvas_item_new (parent,
-							 gnome_month_item_get_type (),
-							 NULL));
-
-	gnome_month_item_construct (mitem);
-
-	return GNOME_CANVAS_ITEM (mitem);
-}
-
-void
-gnome_month_item_construct (GnomeMonthItem *mitem)
-{
-	GdkColor color;
-
-	g_return_if_fail (mitem != NULL);
-	g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
-
-	gnome_canvas_get_color (GNOME_CANVAS_ITEM (mitem)->canvas, "#d6d6d6d6d6d6", &color);
-	mitem->head_pixel = color.pixel;
-	mitem->day_box_pixel = color.pixel;
-
-	gnome_canvas_get_color (GNOME_CANVAS_ITEM (mitem)->canvas, "black", &color);
-	mitem->outline_pixel = color.pixel;
-	mitem->day_pixel = color.pixel;
-
-	create_items (mitem);
-}
-
-static void
-free_day_names (GnomeMonthItem *mitem)
-{
-	int i;
-
-	if (mitem->day_names[0])
-		for (i = 0; i < 7; i++)
-			g_free (mitem->day_names[i]);
-}
-
-static void
-gnome_month_item_destroy (GtkObject *object)
-{
-	GnomeMonthItem *mitem;
-
-	g_return_if_fail (object != NULL);
-	g_return_if_fail (GNOME_IS_MONTH_ITEM (object));
-
-	mitem = GNOME_MONTH_ITEM (object);
-
-	free_day_names (mitem);
-
-	if (GTK_OBJECT_CLASS (parent_class)->destroy)
-		(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-}
-
-/* Sets the color of the specified pixel value to that of the specified argument, which must be in
- * GdkColor format if format is TRUE, otherwise it must be in string format.
- */
-static void
-set_color_arg (GnomeMonthItem *mitem, gulong *pixel, GtkArg *arg, int gdk_format, int set_head, int set_day)
-{
-	GdkColor color;
-
-	if (gdk_format)
-		*pixel = ((GdkColor *) GTK_VALUE_BOXED (*arg))->pixel;
-	else {
-		if (gnome_canvas_get_color (GNOME_CANVAS_ITEM (mitem)->canvas, GTK_VALUE_STRING (*arg), &color))
-			*pixel = color.pixel;
-		else
-			*pixel = 0;
-	}
-
-	if (set_head)
-		set_head_color (mitem);
-
-	if (set_day)
-		set_day_color (mitem);
-}
-
-static void
-gnome_month_item_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
-{
-	GnomeMonthItem *mitem;
-	char **day_names;
-	int i;
-
-	mitem = GNOME_MONTH_ITEM (object);
-
-	switch (arg_id) {
-	case ARG_YEAR:
-		mitem->year = GTK_VALUE_UINT (*arg);
-		set_days (mitem);
-		break;
-
-	case ARG_MONTH:
-		mitem->month = GTK_VALUE_UINT (*arg);
-		set_days (mitem);
-		break;
-
-	case ARG_X:
-		mitem->x = GTK_VALUE_DOUBLE (*arg);
-		reanchor (mitem);
-		break;
-
-	case ARG_Y:
-		mitem->y = GTK_VALUE_DOUBLE (*arg);
-		reanchor (mitem);
-		break;
-
-	case ARG_WIDTH:
-		mitem->width = fabs (GTK_VALUE_DOUBLE (*arg));
-		reshape (mitem);
-		break;
-
-	case ARG_HEIGHT:
-		mitem->height = fabs (GTK_VALUE_DOUBLE (*arg));
-		reshape (mitem);
-		break;
-
-	case ARG_ANCHOR:
-		mitem->anchor = GTK_VALUE_ENUM (*arg);
-		reanchor (mitem);
-		break;
-
-	case ARG_HEAD_PADDING:
-		mitem->head_padding = fabs (GTK_VALUE_DOUBLE (*arg));
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_PADDING:
-		mitem->day_padding = fabs (GTK_VALUE_DOUBLE (*arg));
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_NAMES:
-		day_names = GTK_VALUE_POINTER (*arg);
-
-		/* First, check that none of the names is null */
-
-		for (i = 0; i < 7; i++)
-			if (!day_names[i]) {
-				g_warning ("Day number %d was NULL; day names cannot be NULL!", i);
-				return;
-			}
-
-		/* Set the new names */
-
-		free_day_names (mitem);
-		for (i = 0; i < 7; i++)
-			mitem->day_names[i] = g_strdup (day_names[i]);
-
-		set_day_names (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_HEADING_HEIGHT:
-		mitem->head_height = fabs (GTK_VALUE_DOUBLE (*arg));
-		reshape (mitem);
-		break;
-
-	case ARG_HEADING_ANCHOR:
-		mitem->head_anchor = GTK_VALUE_ENUM (*arg);
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_ANCHOR:
-		mitem->day_anchor = GTK_VALUE_ENUM (*arg);
-		reshape (mitem);
-		break;
-
-	case ARG_START_ON_MONDAY:
-		mitem->start_on_monday = GTK_VALUE_BOOL (*arg);
-		set_day_names (mitem);
-		set_days (mitem);
-		break;
-
-	case ARG_HEAD_FONT:
-		gdk_font_unref (mitem->head_font);
-
-		mitem->head_font = gdk_font_load (GTK_VALUE_STRING (*arg));
-		if (!mitem->head_font) {
-			mitem->head_font = gdk_font_load ("fixed");
-			g_assert (mitem->head_font != NULL);
-		}
-
-		set_head_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_HEAD_FONTSET:
-		gdk_font_unref (mitem->head_font);
-
-		mitem->head_font = gdk_fontset_load (GTK_VALUE_STRING (*arg));
-		if (!mitem->head_font) {
-			mitem->head_font =
-			  gdk_fontset_load ("-*-fixed-medium-r-semicondensed--13-120-75-75-c-60-*-*");
-			g_assert (mitem->head_font != NULL);
-		}
-
-		set_head_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_HEAD_FONT_GDK:
-		gdk_font_unref (mitem->head_font);
-
-		mitem->head_font = GTK_VALUE_BOXED (*arg);
-		gdk_font_ref (mitem->head_font);
-		set_head_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_FONT:
-		gdk_font_unref (mitem->day_font);
-
-		mitem->day_font = gdk_font_load (GTK_VALUE_STRING (*arg));
-		if (!mitem->day_font) {
-			mitem->day_font = gdk_font_load ("fixed");
-			g_assert (mitem->day_font != NULL);
-		}
-
-		set_day_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_FONTSET:
-		gdk_font_unref (mitem->day_font);
-
-		mitem->day_font = gdk_fontset_load (GTK_VALUE_STRING (*arg));
-		if (!mitem->day_font) {
-			mitem->day_font =
-			  gdk_fontset_load ("-*-fixed-medium-r-semicondensed--13-120-75-75-c-60-*-*");
-			g_assert (mitem->day_font != NULL);
-		}
-
-		set_day_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_DAY_FONT_GDK:
-		gdk_font_unref (mitem->day_font);
-
-		mitem->day_font = GTK_VALUE_BOXED (*arg);
-		gdk_font_ref (mitem->day_font);
-		set_day_font (mitem);
-		reshape (mitem);
-		break;
-
-	case ARG_HEAD_COLOR:
-		set_color_arg (mitem, &mitem->head_pixel, arg, FALSE, TRUE, FALSE);
-		break;
-
-	case ARG_HEAD_COLOR_GDK:
-		set_color_arg (mitem, &mitem->head_pixel, arg, TRUE, TRUE, FALSE);
-		break;
-
-	case ARG_OUTLINE_COLOR:
-		set_color_arg (mitem, &mitem->outline_pixel, arg, FALSE, TRUE, TRUE);
-		break;
-
-	case ARG_OUTLINE_COLOR_GDK:
-		set_color_arg (mitem, &mitem->outline_pixel, arg, TRUE, TRUE, TRUE);
-		break;
-
-	case ARG_DAY_BOX_COLOR:
-		set_color_arg (mitem, &mitem->day_box_pixel, arg, FALSE, FALSE, TRUE);
-		break;
-
-	case ARG_DAY_BOX_COLOR_GDK:
-		set_color_arg (mitem, &mitem->day_box_pixel, arg, TRUE, FALSE, TRUE);
-		break;
-
-	case ARG_DAY_COLOR:
-		set_color_arg (mitem, &mitem->day_pixel, arg, FALSE, FALSE, TRUE);
-		break;
-
-	case ARG_DAY_COLOR_GDK:
-		set_color_arg (mitem, &mitem->day_pixel, arg, TRUE, FALSE, TRUE);
-		break;
-
-	default:
-		break;
-	}
-}
-
-/* Allocates a GdkColor structure filled with the specified pixel, and puts it into the specified
- * arg for returning it in the get_arg method.
- */
-static void
-get_color_arg (GnomeMonthItem *mitem, gulong pixel, GtkArg *arg)
-{
-	GdkColor *color;
-
-	color = g_new (GdkColor, 1);
-	color->pixel = pixel;
-	gdk_color_context_query_color (GNOME_CANVAS_ITEM (mitem)->canvas->cc, color);
-	GTK_VALUE_BOXED (*arg) = color;
-}
-
-static void
-gnome_month_item_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
-{
-	GnomeMonthItem *mitem;
-
-	mitem = GNOME_MONTH_ITEM (object);
-
-	switch (arg_id) {
-	case ARG_YEAR:
-		GTK_VALUE_UINT (*arg) = mitem->year;
-		break;
-
-	case ARG_MONTH:
-		GTK_VALUE_UINT (*arg) = mitem->month;
-		break;
-
-	case ARG_X:
-		GTK_VALUE_DOUBLE (*arg) = mitem->x;
-		break;
-
-	case ARG_Y:
-		GTK_VALUE_DOUBLE (*arg) = mitem->y;
-		break;
-
-	case ARG_WIDTH:
-		GTK_VALUE_DOUBLE (*arg) = mitem->width;
-		break;
-
-	case ARG_HEIGHT:
-		GTK_VALUE_DOUBLE (*arg) = mitem->height;
-		break;
-
-	case ARG_ANCHOR:
-		GTK_VALUE_ENUM (*arg) = mitem->anchor;
-		break;
-
-	case ARG_HEAD_PADDING:
-		GTK_VALUE_DOUBLE (*arg) = mitem->head_padding;
-		break;
-
-	case ARG_DAY_PADDING:
-		GTK_VALUE_DOUBLE (*arg) = mitem->day_padding;
-		break;
-
-	case ARG_HEADING_HEIGHT:
-		GTK_VALUE_DOUBLE (*arg) = mitem->head_height;
-		break;
-
-	case ARG_HEADING_ANCHOR:
-		GTK_VALUE_ENUM (*arg) = mitem->head_anchor;
-		break;
-
-	case ARG_DAY_ANCHOR:
-		GTK_VALUE_ENUM (*arg) = mitem->day_anchor;
-		break;
-
-	case ARG_START_ON_MONDAY:
-		GTK_VALUE_BOOL (*arg) = mitem->start_on_monday;
-		break;
-
-	case ARG_HEAD_FONT_GDK:
-		GTK_VALUE_BOXED (*arg) = mitem->head_font;
-		break;
-
-	case ARG_DAY_FONT_GDK:
-		GTK_VALUE_BOXED (*arg) = mitem->day_font;
-		break;
-
-	case ARG_HEAD_COLOR_GDK:
-		get_color_arg (mitem, mitem->head_pixel, arg);
-		break;
-
-	case ARG_OUTLINE_COLOR_GDK:
-		get_color_arg (mitem, mitem->outline_pixel, arg);
-		break;
-
-	case ARG_DAY_BOX_COLOR_GDK:
-		get_color_arg (mitem, mitem->day_box_pixel, arg);
-		break;
-
-	case ARG_DAY_COLOR_GDK:
-		get_color_arg (mitem, mitem->day_pixel, arg);
-		break;
-
-	default:
-		arg->type = GTK_TYPE_INVALID;
-		break;
-	}
-}
-
-GnomeCanvasItem *
-gnome_month_item_num2child (GnomeMonthItem *mitem, int child_num)
-{
-	g_return_val_if_fail (mitem != NULL, NULL);
-	g_return_val_if_fail (GNOME_IS_MONTH_ITEM (mitem), NULL);
-
-	return mitem->items[child_num];
-}
-
-int
-gnome_month_item_child2num (GnomeMonthItem *mitem, GnomeCanvasItem *child)
-{
-	int i;
-
-	g_return_val_if_fail (mitem != NULL, -1);
-	g_return_val_if_fail (GNOME_IS_MONTH_ITEM (mitem), -1);
-	g_return_val_if_fail (child != NULL, -1);
-	g_return_val_if_fail (GNOME_IS_CANVAS_ITEM (child), -1);
-
-	for (i = 0; i < GNOME_MONTH_ITEM_LAST; i++)
-		if (mitem->items[i] == child)
-			return i;
-
-	return -1;
-}
-
-int
-gnome_month_item_num2day (GnomeMonthItem *mitem, int child_num)
-{
-	g_return_val_if_fail (mitem != NULL, 0);
-	g_return_val_if_fail (GNOME_IS_MONTH_ITEM (mitem), 0);
-
-	if ((child_num >= GNOME_MONTH_ITEM_DAY_GROUP) && (child_num < GNOME_MONTH_ITEM_LAST)) {
-		child_num = (child_num - GNOME_MONTH_ITEM_DAY_GROUP) % 42;
-		return mitem->day_numbers[child_num];
-	} else
-		return 0;
-}
-
-int
-gnome_month_item_day2index (GnomeMonthItem *mitem, int day_num)
-{
-	int i;
-
-	g_return_val_if_fail (mitem != NULL, -1);
-	g_return_val_if_fail (GNOME_IS_MONTH_ITEM (mitem), -1);
-	g_return_val_if_fail (day_num >= 1, -1);
-
-	/* Find first day of month */
-
-	for (i = 0; mitem->day_numbers[i] == 0; i++)
-		;
-
-	/* Find the specified day */
-
-	for (; (mitem->day_numbers[i] != 0) && (i < 42); i++)
-		if (mitem->day_numbers[i] == day_num)
-			return i;
-
-	/* Bail out */
-
-	return -1;
-}
diff --git a/calendar/gui/gnome-month-item.h b/calendar/gui/gnome-month-item.h
deleted file mode 100644
index 0ec4fd484c..0000000000
--- a/calendar/gui/gnome-month-item.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/* General-purpose monthly calendar canvas item for GNOME
- *
- * Copyright (C) 1998 Red Hat Software, Inc.
- *
- * Author: Federico Mena <federico@nuclecu.unam.mx>
- */
-
-#ifndef GNOME_MONTH_ITEM_H
-#define GNOME_MONTH_ITEM_H
-
-#include <libgnome/gnome-defs.h>
-#include <gtk/gtkpacker.h> /* why the hell is GtkAnchorType here and not in gtkenums.h? */
-#include <libgnomeui/gnome-canvas.h>
-
-
-BEGIN_GNOME_DECLS
-
-
-/* These values are used to identify the canvas items that make up a complete GnomeMonthItem, which
- * is made up of the following "pieces":
- *
- *	Headings line:
- *		- 7 GnomeCanvasGroups:
- *			Each group contains one box (GnomeCanvasRectangle) and one label
- *			(GnomeCanvasText)
- *
- *	Day slots:
- *		- 42 GnomeCanvasGroups:
- *			Each group contains one box (GnomeCanvasRectangle) and one label
- *			(GnomeCanvasText)
- *
- * The headings are organized from left to right.  The day slots are organized as a table in
- * row-major order.
- *
- * If you want to access the individual items of the GnomeMonthItem, you can use these numbers with
- * the gnome_month_item_num2child() function.  If you want to convert a number into the
- * corresponding GnomeCanvasItem, you can use the gnome_month_item_child2num() function.
- */
-typedef enum {
-	GNOME_MONTH_ITEM_HEAD_GROUP = 0,	/* 7 groups for headings */
-	GNOME_MONTH_ITEM_HEAD_BOX   = 7,	/* 7 boxes for headings */
-	GNOME_MONTH_ITEM_HEAD_LABEL = 14,	/* 7 labels for headings */
-	GNOME_MONTH_ITEM_DAY_GROUP  = 21,	/* 42 groups for days */
-	GNOME_MONTH_ITEM_DAY_BOX    = 63,	/* 42 boxes for days */
-	GNOME_MONTH_ITEM_DAY_LABEL  = 105,	/* 42 labels for days */
-	GNOME_MONTH_ITEM_LAST       = 147	/* total number of items */
-} GnomeMonthItemChild;
-
-/* The MonthItem canvas item defines a simple monthly calendar.  It is made out of a number of
- * canvas items, which can be accessed using the functions provided.  The monthly calendar is
- * anchored with respect to a point.  The following arguments are available:
- *
- * name			type		read/write	description
- * ------------------------------------------------------------------------------------------
- * year			uint		RW		Full year (1-9999)
- * month		uint		RW		Number of month (0-11)
- * x			double		RW		X position of anchor point
- * y			double		RW		Y position of anchor point
- * width		double		RW		Width of calendar in canvas units
- * height		double		RW		Height of calendar in canvas units
- * anchor		GtkAnchorType	RW		Anchor side for calendar
- * heading_padding	double		RW		Padding inside heading boxes
- * day_padding		double		RW		Padding inside day boxes
- * day_names		char **		W		Array of strings corresponding to the day names (sun-sat)
- * heading_height	double		RW		Height of headings bar in canvas units
- * heading_anchor	GtkAnchorType	RW		Anchor side for headings inside heading boxes
- * day_anchor		GtkAnchorType	RW		Anchor side for day numbers inside day boxes
- * start_on_monday	boolean		RW		Specifies whether the week starts on Monday or Sunday
- * heading_font		string		W		X logical font descriptor for the headings
- * heading_fontset     	string		W		X logical fontset descriptor for the headings
- * heading_font_gdk	GdkFont *	RW		Pointer to GdkFont for the headings
- * day_font		string		W		X logical font descriptor for the day numbers
- * day_fontset 		string		W		X logical fontset descriptor for the day numbers
- * day_font_gdk		GdkFont *	RW		Pointer to GdkFont for the day numbers
- * heading_color	string		W		X color specification for heading labels
- * heading_color_gdk	GdkColor *	RW		Pointer to an allocated GdkColor for heading labels
- * outline_color	string		W		X color specification for outline (lines and fill of heading boxes)
- * outline_color_gdk	GdkColor *	RW		Pointer to an allocated GdkColor for outline
- * day_box_color	string		W		X color specification for day boxes
- * day_box_color_gdk	GdkColor *	RW		Pointer to an allocated GdkColor for day boxes
- * day_color		string		W		X color specification for day number labels
- * day_color_gdk	GdkColor *	RW		Pointer to an allocated GdkColor for day number labels
- */
-
-#define GNOME_TYPE_MONTH_ITEM            (gnome_month_item_get_type ())
-#define GNOME_MONTH_ITEM(obj)            (GTK_CHECK_CAST ((obj), GNOME_TYPE_MONTH_ITEM, GnomeMonthItem))
-#define GNOME_MONTH_ITEM_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GNOME_TYPE_MONTH_ITEM, GnomeMonthItemClass))
-#define GNOME_IS_MONTH_ITEM(obj)         (GTK_CHECK_TYPE ((obj), GNOME_TYPE_MONTH_ITEM))
-#define GNOME_IS_MONTH_ITEM_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GNOME_TYPE_MONTH_ITEM))
-
-
-typedef struct _GnomeMonthItem GnomeMonthItem;
-typedef struct _GnomeMonthItemClass GnomeMonthItemClass;
-
-struct _GnomeMonthItem {
-	GnomeCanvasGroup group;
-
-	int year;			/* Year to show (full, no two-digit crap) */
-	int month;			/* Month to show (0-11) */
-
-	double x, y;			/* Position at anchor */
-	double width, height;		/* Size of calendar */
-	GtkAnchorType anchor;		/* Anchor side for calendar */
-
-	double head_padding;		/* Padding to use between heading lines and text */
-	double day_padding;		/* Padding to use between day number lines and text */
-
-	char *day_names[7];		/* Names to use for the day labels, starting from Sunday */
-
-	double head_height;		/* Height of the headings row */
-	GtkAnchorType head_anchor;	/* Anchor side for the heading labels */
-	GtkAnchorType day_anchor;	/* Anchor side for the day number labels */
-
-	GnomeCanvasItem **items;	/* All the items that make up the calendar */
-	int day_numbers[42];		/* The numbers of the days, as they are shown in the display */
-
-	GdkFont *head_font;		/* Font for the headings */
-	GdkFont *day_font;		/* Font for the day numbers */
-
-	gulong head_pixel;		/* Color for heading labels */
-	gulong outline_pixel;		/* Color for the outline (lines and heading boxes) */
-	gulong day_box_pixel;		/* Color for the day boxes */
-	gulong day_pixel;		/* Color for day number labels */
-
-	int start_on_monday : 1;	/* Start the week on Monday?  If false, then start from Sunday */
-};
-
-struct _GnomeMonthItemClass {
-	GnomeCanvasGroupClass parent_class;
-};
-
-
-/* Standard Gtk function */
-GtkType gnome_month_item_get_type (void);
-
-/* Creates a new month item with the specified group as parent */
-GnomeCanvasItem *gnome_month_item_new (GnomeCanvasGroup *parent);
-
-/* Constructor function useful for derived classes */
-void gnome_month_item_construct (GnomeMonthItem *mitem);
-
-/* Returns the child item defined by the child number (as specified on the GnomeMonthItemChild
- * enumeration above).
- */
-GnomeCanvasItem *gnome_month_item_num2child (GnomeMonthItem *mitem, int child_num);
-
-/* Returns the number of the specified child item, as defined on the GnomeMonthItemChild enumeration
- * above.  If the specified object is not found, it returns -1.
- */
-int gnome_month_item_child2num (GnomeMonthItem *mitem, GnomeCanvasItem *child);
-
-/* Returns the number of the day relevant to the specified child item.  Day numbers are 1-based.  If
- * the specified child is outside the range of displayed days, then it returns 0.
- */
-int gnome_month_item_num2day (GnomeMonthItem *mitem, int child_num);
-
-/* Returns the index (0-41) of the specified date within the table of days.  If the day number is
- * invalid for the current monthly calendar, then -1 is returned.
- */
-int gnome_month_item_day2index (GnomeMonthItem *mitem, int day_num);
-
-
-END_GNOME_DECLS
-
-#endif
diff --git a/calendar/gui/main.c b/calendar/gui/main.c
index ebfc54d87d..5ec6b18620 100644
--- a/calendar/gui/main.c
+++ b/calendar/gui/main.c
@@ -39,8 +39,8 @@
 #include "calendar-config.h"
 #include "component-factory.h"
 #include "control-factory.h"
-#include "tasks-control-factory.h"
 #include "e-itip-control.h"
+#include "tasks-control-factory.h"
 
 static void
 init_bonobo (int argc, char **argv)
diff --git a/calendar/gui/tag-calendar.c b/calendar/gui/tag-calendar.c
index ce2047b3ad..1a45d7fa85 100644
--- a/calendar/gui/tag-calendar.c
+++ b/calendar/gui/tag-calendar.c
@@ -121,11 +121,11 @@ tag_calendar_by_client (ECalendar *ecal, CalClient *client)
 	if (!GTK_WIDGET_VISIBLE (ecal))
 		return;
 
-	prepare_tag (ecal, &c);
-
-	if (cal_client_get_load_state (client) == CAL_CLIENT_LOAD_LOADED)
+	if (cal_client_get_load_state (client) != CAL_CLIENT_LOAD_LOADED)
 		return;
 
+	prepare_tag (ecal, &c);
+
 #if 0
 	g_print ("DateNavigator generating instances\n");
 #endif
diff --git a/calendar/gui/tasks-migrate.c b/calendar/gui/tasks-migrate.c
new file mode 100644
index 0000000000..885c782a0c
--- /dev/null
+++ b/calendar/gui/tasks-migrate.c
@@ -0,0 +1,304 @@
+/* Evolution calendar - Migrate tasks from the calendar folder to the tasks folder
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ *
+ * Authors: Federico Mena-Quintero <federico@ximian.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnome.h>
+#include <cal-client/cal-client.h>
+#include "component-factory.h"
+#include "tasks-migrate.h"
+
+
+
+/* Client for the calendar folder */
+static CalClient *calendar_client = NULL;
+
+/* Client for the tasks folder */
+static CalClient *tasks_client = NULL;
+
+/* Whether we have done the migration yet */
+static gboolean migrated = FALSE;
+
+
+
+/* Performs the actual migration process */
+static void
+migrate (void)
+{
+	GList *uids;
+	GList *l;
+	gboolean success;
+	gboolean at_least_one;
+
+	g_assert (calendar_client != NULL);
+	g_assert (tasks_client != NULL);
+	g_assert (cal_client_get_load_state (calendar_client) == CAL_CLIENT_LOAD_LOADED);
+	g_assert (cal_client_get_load_state (tasks_client) == CAL_CLIENT_LOAD_LOADED);
+
+	uids = cal_client_get_uids (calendar_client, CALOBJ_TYPE_TODO);
+
+	success = TRUE;
+	at_least_one = FALSE;
+
+	for (l = uids; l; l = l->next) {
+		const char *uid;
+		CalComponent *comp;
+		CalClientGetStatus status;
+
+		at_least_one = TRUE;
+
+		uid = l->data;
+		status = cal_client_get_object (calendar_client, uid, &comp);
+
+		switch (status) {
+		case CAL_CLIENT_GET_SUCCESS:
+			if (cal_client_update_object (tasks_client, comp))
+				cal_client_remove_object (calendar_client, uid);
+			else
+				success = FALSE;
+
+			gtk_object_unref (GTK_OBJECT (comp));
+			break;
+
+		case CAL_CLIENT_GET_NOT_FOUND:
+			/* This is OK; the object may have disappeared from the server */
+			break;
+
+		case CAL_CLIENT_GET_SYNTAX_ERROR:
+			success = FALSE;
+			break;
+
+		default:
+			g_assert_not_reached ();
+		}
+	}
+
+	cal_obj_uid_list_free (uids);
+
+	if (!at_least_one)
+		return;
+
+	if (success)
+		gnome_ok_dialog (_("Evolution has taken the tasks that were in your calendar folder "
+				   "and automatically migrated them to the new tasks folder."));
+	else
+		gnome_ok_dialog (_("Evolution has tried to take the tasks that were in your "
+				   "calendar folder and migrate them to the new tasks folder.\n"
+				   "Some of the tasks could not be migrated, so "
+				   "this process may be attempted again in the future."));
+}
+
+/* Displays an error to indicate that a calendar could not be opened */
+static void
+open_error (const char *uri)
+{
+	char *msg;
+
+	msg = g_strdup_printf (_("Could not open `%s'; no items from the calendar folder "
+				 "will be migrated to the tasks folder."),
+				 uri);
+	gnome_error_dialog (msg);
+	g_free (msg);
+}
+
+/* Displays an error to indicate that a URI method is not supported */
+static void
+method_error (const char *uri)
+{
+	char *msg;
+
+	msg = g_strdup_printf (_("The method required to load `%s' is not supported; "
+				 "no items from the calendar folder will be migrated "
+				 "to the tasks folder."),
+			       uri);
+	gnome_error_dialog (msg);
+	g_free (msg);
+}
+
+/* Callback used when the tasks client is finished loading */
+static void
+tasks_opened_cb (CalClient *client, CalClientOpenStatus status, gpointer data)
+{
+	g_assert (calendar_client != NULL);
+	g_assert (cal_client_get_load_state (calendar_client) == CAL_CLIENT_LOAD_LOADED);
+
+	switch (status) {
+	case CAL_CLIENT_OPEN_SUCCESS:
+		migrate ();
+		break;
+
+	case CAL_CLIENT_OPEN_ERROR:
+		open_error (cal_client_get_uri (client));
+		migrated = FALSE;
+		break;
+
+	case CAL_CLIENT_OPEN_NOT_FOUND:
+		/* This can't happen because we did not specify only_if_exists when
+		 * issuing the open request.
+		 */
+		g_assert_not_reached ();
+		break;
+
+	case CAL_CLIENT_OPEN_METHOD_NOT_SUPPORTED:
+		method_error (cal_client_get_uri (client));
+		migrated = FALSE;
+		break;
+
+	default:
+		g_assert_not_reached ();
+	}
+
+	gtk_object_unref (GTK_OBJECT (calendar_client));
+	calendar_client = NULL;
+
+	gtk_object_unref (GTK_OBJECT (tasks_client));
+	tasks_client = NULL;
+}
+
+/* Initiates the loading process for the tasks client */
+static gboolean
+load_tasks_client (void)
+{
+	char *uri;
+	gboolean success;
+
+	g_assert (calendar_client != NULL);
+	g_assert (cal_client_get_load_state (calendar_client) == CAL_CLIENT_LOAD_LOADED);
+
+	tasks_client = cal_client_new ();
+	if (!tasks_client)
+		goto error;
+
+	gtk_signal_connect (GTK_OBJECT (tasks_client), "cal_opened",
+			    GTK_SIGNAL_FUNC (tasks_opened_cb),
+			    NULL);
+
+	uri = g_strdup_printf ("%s/local/Tasks/tasks.ics", evolution_dir);
+	success = cal_client_open_calendar (tasks_client, uri, FALSE);
+	g_free (uri);
+
+	if (success)
+		return TRUE;
+
+ error:
+	g_message ("load_tasks_client(): could not issue open request for the tasks client");
+
+	if (tasks_client) {
+		gtk_object_unref (GTK_OBJECT (tasks_client));
+		tasks_client = NULL;
+	}
+
+	return FALSE;
+}
+
+/* Callback used when the calendar client finishes loading */
+static void
+calendar_opened_cb (CalClient *client, CalClientOpenStatus status, gpointer data)
+{
+	switch (status) {
+	case CAL_CLIENT_OPEN_SUCCESS:
+		if (!load_tasks_client ()) {
+			migrated = FALSE;
+			break;
+		}
+
+		return;
+
+	case CAL_CLIENT_OPEN_ERROR:
+		open_error (cal_client_get_uri (client));
+		migrated = FALSE;
+		break;
+
+	case CAL_CLIENT_OPEN_NOT_FOUND:
+		/* This is OK; the calendar folder did not exist in the first
+		 * place so there is nothing to migrate.
+		 */
+		break;
+
+	case CAL_CLIENT_OPEN_METHOD_NOT_SUPPORTED:
+		method_error (cal_client_get_uri (client));
+		migrated = FALSE;
+		break;
+
+	default:
+		g_assert_not_reached ();
+	}
+
+	gtk_object_unref (GTK_OBJECT (calendar_client));
+	calendar_client = NULL;
+}
+
+/* Initiates the loading process for the calendar client */
+static gboolean
+load_calendar_client (void)
+{
+	char *uri;
+	gboolean success;
+
+	/* First we load the calendar client; the tasks client will be loaded
+	 * later only if the former one succeeds.
+	 */
+
+	calendar_client = cal_client_new ();
+	if (!calendar_client)
+		goto error;
+
+	gtk_signal_connect (GTK_OBJECT (calendar_client), "cal_opened",
+			    GTK_SIGNAL_FUNC (calendar_opened_cb),
+			    NULL);
+
+	uri = g_strdup_printf ("%s/local/Calendar/calendar.ics", evolution_dir);
+	success = cal_client_open_calendar (calendar_client, uri, TRUE);
+	g_free (uri);
+
+	if (success)
+		return TRUE;
+
+ error:
+	g_message ("load_calendar_client(): could not issue open request for the calendar client");
+
+	if (calendar_client) {
+		gtk_object_unref (GTK_OBJECT (calendar_client));
+		calendar_client = NULL;
+	}
+
+	return FALSE;
+}
+
+/**
+ * tasks_migrate:
+ *
+ * Initiates the asynchronous process that migrates the tasks from the default
+ * user calendar folder to the default tasks folder.  This is because Evolution
+ * used to store tasks in the same folder as the calendar by default, but they
+ * are separate folders now.
+ **/
+void
+tasks_migrate (void)
+{
+	g_assert (!migrated);
+	migrated = TRUE;
+
+	if (!load_calendar_client ())
+		migrated = FALSE;
+}
diff --git a/calendar/gui/tasks-migrate.h b/calendar/gui/tasks-migrate.h
new file mode 100644
index 0000000000..01f124222b
--- /dev/null
+++ b/calendar/gui/tasks-migrate.h
@@ -0,0 +1,29 @@
+/* Evolution calendar - Migrate tasks from the calendar folder to the tasks folder
+ *
+ * Copyright (C) 2001 Ximian, Inc.
+ *
+ * Authors: Federico Mena-Quintero <federico@ximian.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef TASKS_MIGRATE_H
+#define TASKS_MIGRATE_H
+
+
+void tasks_migrate (void);
+
+
+#endif