initial import of ECalEvent targets

2005-01-06  David Trowbridge  <trowbrds@cs.colorado.edu>

	* gui/e-cal-event[hc]: initial import of ECalEvent targets

	* gui/migration.c (migrate_calendars): add component.migration event

svn path=/trunk/; revision=28266

4 files changed, 270 insertions, 0 deletions

diff --git a/calendar/ChangeLog b/calendar/ChangeLog
index 722e9f8993..60b9a8101d 100644
--- a/calendar/ChangeLog
+++ b/calendar/ChangeLog
@@ -1,3 +1,9 @@
+2005-01-06  David Trowbridge  <trowbrds@cs.colorado.edu>
+
+	* gui/e-cal-event[hc]: initial import of ECalEvent targets
+
+	* gui/migration.c (migrate_calendars): add component.migration event
+
 2005-01-06  JP Rosevear  <jpr@novell.com>
 
 	* gui/Makefile.am: install schemas properly
diff --git a/calendar/gui/e-cal-event.c b/calendar/gui/e-cal-event.c
new file mode 100644
index 0000000000..f359f471fd
--- /dev/null
+++ b/calendar/gui/e-cal-event.c
@@ -0,0 +1,159 @@
+/*
+ * Authors: David Trowbridge <trowbrds@cs.colorado.edu>
+ *
+ * Copyright (C) 2005 Novell, Inc. (www.novell.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 "e-cal-event.h"
+
+static GObjectClass *ece_parent;
+
+static void
+ece_init (GObject *o)
+{
+}
+
+static void
+ece_finalize (GObject *o)
+{
+	((GObjectClass *) ece_parent)->finalize (o);
+}
+
+static void
+ece_target_free (EEvent *ev, EEventTarget *t)
+{
+	switch (t->type) {
+	case E_CAL_EVENT_TARGET_COMPONENT: {
+		ECalEventTargetComponent *s = (ECalEventTargetComponent *) t;
+		if (s->component)
+			g_object_unref (s->component);
+		break; }
+	}
+
+	((EEventClass *)ece_parent)->target_free (ev, t);
+}
+
+static void
+ece_class_init (GObjectClass *klass)
+{
+	klass->finalize = ece_finalize;
+	((EEventClass *)klass)->target_free = ece_target_free;
+}
+
+GType
+e_cal_event_get_type (void)
+{
+	static GType type = 0;
+
+	if (!type) {
+		static const GTypeInfo info = {
+			sizeof (ECalEventClass),
+			NULL, NULL,
+			(GClassInitFunc) ece_class_init,
+			NULL, NULL,
+			sizeof (ECalEvent), 0,
+			(GInstanceInitFunc) ece_init
+		};
+		ece_parent = g_type_class_ref (e_event_get_type ());
+		type = g_type_register_static (e_event_get_type (), "ECalEvent", &info, 0);
+	}
+
+	return type;
+}
+
+ECalEvent *
+e_cal_event_peek (void)
+{
+	static ECalEvent *e_cal_event = NULL;
+	if (!e_cal_event) {
+		e_cal_event = g_object_new (e_cal_event_get_type (), 0);
+		e_event_construct (&e_cal_event->event, "org.gnome.evolution.calendar.events");
+	}
+	return e_cal_event;
+}
+
+ECalEventTargetComponent *
+e_cal_event_target_new_component (ECalEvent *ece, struct _CalendarComponent *component, guint32 flags)
+{
+	ECalEventTargetComponent *t = e_event_target_new (&ece->event, E_CAL_EVENT_TARGET_COMPONENT, sizeof (*t));
+
+	t->component = g_object_ref (component);
+	t->target.mask = ~flags;
+
+	return t;
+}
+
+/* ********************************************************************** */
+
+static void *eceh_parent_class;
+
+static const EEventHookTargetMask eceh_component_masks[] = {
+	{ "migration", E_CAL_EVENT_COMPONENT_MIGRATION },
+	{ 0 },
+};
+
+static const EEventHookTargetMap eceh_targets[] = {
+	{ "component", E_CAL_EVENT_TARGET_COMPONENT, eceh_component_masks },
+	{ 0 },
+};
+
+static void
+eceh_finalize (GObject *o)
+{
+	((GObjectClass *) eceh_parent_class)->finalize (o);
+}
+
+static void
+eceh_class_init (EPluginHookClass *klass)
+{
+	int i;
+
+	((GObjectClass *)klass)->finalize = eceh_finalize;
+	((EPluginHookClass *)klass)->id = "org.gnome.evolution.calendar.events:1.0";
+
+	for (i = 0; eceh_targets[i].type; i++)
+		e_event_hook_class_add_target_map ((EEventHookClass *)klass, &eceh_targets[i]);
+
+	((EEventHookClass *)klass)->event = (EEvent *) e_cal_event_peek ();
+}
+
+GType
+e_cal_event_hook_get_type (void)
+{
+	static GType type = 0;
+
+	if (!type) {
+		static const GTypeInfo info = {
+			sizeof (ECalEventHookClass),
+			NULL, NULL,
+			(GClassInitFunc) eceh_class_init,
+			NULL, NULL,
+			sizeof (ECalEventHook), 0,
+			(GInstanceInitFunc) NULL,
+		};
+
+		eceh_parent_class = g_type_class_ref (e_event_hook_get_type ());
+		type = g_type_register_static (e_event_hook_get_type (), "ECalEventHook", &info, 0);
+	}
+
+	return type;
+}
diff --git a/calendar/gui/e-cal-event.h b/calendar/gui/e-cal-event.h
new file mode 100644
index 0000000000..0a07288973
--- /dev/null
+++ b/calendar/gui/e-cal-event.h
@@ -0,0 +1,87 @@
+/*
+ * Authors: David Trowbridge <trowbrds@cs.colorado.edu>
+ *
+ * Copyright (C) 2005 Novell, Inc. (www.novell.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 __E_CAL_EVENT_H__
+#define __E_CAL_EVENT_H__
+
+#include <glib-object.h>
+
+#include "e-util/e-event.h"
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif
+
+typedef struct _ECalEvent ECalEvent;
+typedef struct _ECalEventClass ECalEventClass;
+
+enum _e_cal_event_target_t {
+	E_CAL_EVENT_TARGET_COMPONENT,
+};
+
+/* Flags that describe TARGET_COMPONENT */
+enum {
+	E_CAL_EVENT_COMPONENT_MIGRATION = 1 << 0,
+};
+
+typedef struct _ECalEventTargetComponent ECalEventTargetComponent;
+
+struct _ECalEventTargetComponent {
+	EEventTarget target;
+
+	struct _CalendarComponent *component;
+};
+
+struct _ECalEvent {
+	EEvent event;
+
+	struct _ECalEventPrivate *priv;
+};
+
+struct _ECalEventClass {
+	EEventClass event_class;
+};
+
+GType                     e_cal_event_get_type (void);
+ECalEvent*                e_cal_event_peek (void);
+ECalEventTargetComponent* e_cal_event_target_new_component (ECalEvent *ece, struct _CalendarComponent *component, guint32 flags);
+
+/* ********************************************************************** */
+
+typedef struct _ECalEventHook ECalEventHook;
+typedef struct _ECalEventHookClass ECalEventHookClass;
+
+struct _ECalEventHook {
+	EEventHook hook;
+};
+
+struct _ECalEventHookClass {
+	EEventHookClass hook_class;
+};
+
+GType e_cal_event_hook_get_type (void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __E_CAL_EVENT_H__ */
diff --git a/calendar/gui/migration.c b/calendar/gui/migration.c
index de43d4bb5f..76b8a52a16 100644
--- a/calendar/gui/migration.c
+++ b/calendar/gui/migration.c
@@ -47,6 +47,7 @@
 #include <libedataserver/e-xml-hash-utils.h>
 #include "calendar-config.h"
 #include "calendar-config-keys.h"
+#include "e-cal-event.h"
 #include "migration.h"
 
 static e_gconf_map_t calendar_display_map[] = {
@@ -700,6 +701,8 @@ migrate_calendars (CalendarComponent *component, int major, int minor, int revis
 {
 	ESourceGroup *on_this_computer = NULL, *on_the_web = NULL, *contacts = NULL;
 	ESource *personal_source = NULL;
+	ECalEvent *ece;
+	ECalEventTargetComponent *target;
 	gboolean retval = FALSE;
 
 	/* we call this unconditionally now - create_groups either
@@ -833,6 +836,21 @@ migrate_calendars (CalendarComponent *component, int major, int minor, int revis
 	}
 
 	e_source_list_sync (calendar_component_peek_source_list (component), NULL);
+
+	/** @Event: component.migration
+	 * @Title: Migration step in component initialization
+	 * @Target: ECalEventTargetComponent
+	 * 
+	 * component.migration is emitted during the calendar component
+	 * initialization process. This allows new calendar backend types
+	 * to be distributed as an e-d-s backend and a plugin without
+	 * reaching their grubby little fingers into migration.c
+	 */
+	/* Fire off migration event */
+	ece = e_cal_event_peek ();
+	target = e_cal_event_target_new_component (ece, calendar_component_peek (), 0);
+	e_event_emit ((EEvent *) ece, "component.migration", (EEventTarget *) target);
+
 	retval = TRUE;
 fail:
 	if (on_this_computer)