Get drag-and-drop-to-source-selector working for contacts, memos and tasks.

Utilizes the new ESourceSelector::data-dropped signal.

svn path=/branches/kill-bonobo/; revision=36822

1 files changed, 288 insertions, 0 deletions

diff --git a/calendar/gui/e-task-list-selector.c b/calendar/gui/e-task-list-selector.c
new file mode 100644
index 0000000000..910ab3f33f
--- /dev/null
+++ b/calendar/gui/e-task-list-selector.c
@@ -0,0 +1,288 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-task-list-selector.c
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "e-task-list-selector.h"
+
+#include <string.h>
+#include <libecal/e-cal.h>
+#include "calendar/common/authentication.h"
+#include "calendar/gui/comp-util.h"
+
+#define E_TASK_LIST_SELECTOR_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_TASK_LIST_SELECTOR, ETaskListSelectorPrivate))
+
+struct _ETaskListSelectorPrivate {
+	gint dummy_value;
+};
+
+enum {
+	DND_TARGET_TYPE_CALENDAR_LIST
+};
+
+static GtkTargetEntry drag_types[] = {
+	{ "text/calendar", 0, DND_TARGET_TYPE_CALENDAR_LIST },
+	{ "text/x-calendar", 0, DND_TARGET_TYPE_CALENDAR_LIST }
+};
+
+static gpointer parent_class;
+
+static gboolean
+task_list_selector_update_single_object (ECal *client,
+                                         icalcomponent *icalcomp)
+{
+	gchar *uid;
+	icalcomponent *tmp_icalcomp;
+
+	uid = (gchar *) icalcomponent_get_uid (icalcomp);
+
+	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, NULL))
+		return e_cal_modify_object (
+			client, icalcomp, CALOBJ_MOD_ALL, NULL);
+
+	return e_cal_create_object (client, icalcomp, &uid, NULL);
+}
+
+static gboolean
+task_list_selector_update_objects (ECal *client,
+                                   icalcomponent *icalcomp)
+{
+	icalcomponent *subcomp;
+	icalcomponent_kind kind;
+
+	kind = icalcomponent_isa (icalcomp);
+	if (kind == ICAL_VTODO_COMPONENT || kind == ICAL_VEVENT_COMPONENT)
+		return task_list_selector_update_single_object (
+			client, icalcomp);
+	else if (kind != ICAL_VCALENDAR_COMPONENT)
+		return FALSE;
+
+	subcomp = icalcomponent_get_first_component (
+		icalcomp, ICAL_ANY_COMPONENT);
+	while (subcomp != NULL) {
+		gboolean success;
+
+		kind = icalcomponent_isa (subcomp);
+		if (kind == ICAL_VTIMEZONE_COMPONENT) {
+			icaltimezone *zone;
+
+			zone = icaltimezone_new ();
+			icaltimezone_set_component (zone, subcomp);
+
+			success = e_cal_add_timezone (client, zone, NULL);
+			icaltimezone_free (zone, 1);
+			if (!success)
+				return FALSE;
+		} else if (kind == ICAL_VTODO_COMPONENT ||
+			kind == ICAL_VEVENT_COMPONENT) {
+			success = task_list_selector_update_single_object (
+				client, subcomp);
+			if (!success)
+				return FALSE;
+		}
+
+		subcomp = icalcomponent_get_next_component (
+			icalcomp, ICAL_ANY_COMPONENT);
+	}
+
+	return TRUE;
+}
+
+static gboolean
+task_list_selector_process_data (ESourceSelector *selector,
+                                 ECal *client,
+                                 const gchar *source_uid,
+                                 icalcomponent *icalcomp,
+                                 GdkDragAction action)
+{
+	ESourceList *source_list;
+	ESource *source;
+	icalcomponent *tmp_icalcomp = NULL;
+	const gchar *uid;
+	gchar *old_uid = NULL;
+	gboolean success = FALSE;
+	gboolean read_only = TRUE;
+	GError *error = NULL;
+
+	/* FIXME Deal with GDK_ACTION_ASK. */
+	if (action == GDK_ACTION_COPY) {
+		old_uid = g_strdup (icalcomponent_get_uid (icalcomp));
+		uid = e_cal_component_gen_uid ();
+		icalcomponent_set_uid (icalcomp, uid);
+	}
+
+	uid = icalcomponent_get_uid (icalcomp);
+	if (old_uid == NULL)
+		old_uid = g_strdup (uid);
+
+	if (e_cal_get_object (client, uid, NULL, &tmp_icalcomp, &error)) {
+		icalcomponent_free (tmp_icalcomp);
+		success = TRUE;
+		goto exit;
+	}
+
+	if (error != NULL && error->code != E_CALENDAR_STATUS_OBJECT_NOT_FOUND) {
+		g_message (
+			"Failed to search the object in destination "
+			"task list: %s", error->message);
+		g_error_free (error);
+		goto exit;
+	}
+
+	success = task_list_selector_update_objects (client, icalcomp);
+
+	if (!success || action != GDK_ACTION_MOVE)
+		goto exit;
+
+	source_list = e_source_selector_get_source_list (selector);
+	source = e_source_list_peek_source_by_uid (source_list, source_uid);
+
+	if (!E_IS_SOURCE (source) || e_source_get_readonly (source))
+		goto exit;
+
+	client = auth_new_cal_from_source (source, E_CAL_SOURCE_TYPE_TODO);
+	if (client == NULL) {
+		g_message ("Cannot create source client to remove old task");
+		goto exit;
+	}
+
+	e_cal_is_read_only (client, &read_only, NULL);
+	if (!read_only && e_cal_open (client, TRUE, NULL))
+		e_cal_remove_object (client, old_uid, NULL);
+	else if (!read_only)
+		g_message ("Cannot open source client to remove old task");
+
+	g_object_unref (client);
+
+exit:
+	g_free (old_uid);
+
+	return success;
+}
+
+static gboolean
+task_list_selector_data_dropped (ESourceSelector *selector,
+                                 GtkSelectionData *selection_data,
+                                 ESource *destination,
+                                 GdkDragAction action,
+                                 guint info)
+{
+	ECal *client;
+	GSList *list, *iter;
+	gboolean success = FALSE;
+
+	client = auth_new_cal_from_source (
+		destination, E_CAL_SOURCE_TYPE_TODO);
+
+	if (client == NULL || !e_cal_open (client, TRUE, NULL))
+		goto exit;
+
+	list = cal_comp_selection_get_string_list (selection_data);
+
+	for (iter = list; iter != NULL; iter = iter->next) {
+		gchar *source_uid = iter->data;
+		icalcomponent *icalcomp;
+		gchar *component_string;
+
+		/* Each string is "source_uid\ncomponent_string". */
+		component_string = strchr (source_uid, '\n');
+		if (component_string == NULL)
+			continue;
+
+		*component_string++ = '\0';
+		icalcomp = icalparser_parse_string (component_string);
+		if (icalcomp == NULL)
+			continue;
+
+		success = task_list_selector_process_data (
+			selector, client, source_uid, icalcomp, action);
+
+		icalcomponent_free (icalcomp);
+	}
+
+	g_slist_foreach (list, (GFunc) g_free, NULL);
+	g_slist_free (list);
+
+exit:
+	if (client != NULL)
+		g_object_unref (client);
+
+	return success;
+}
+
+static void
+task_list_selector_class_init (ETaskListSelectorClass *class)
+{
+	ESourceSelectorClass *source_selector_class;
+
+	parent_class = g_type_class_peek_parent (class);
+	g_type_class_add_private (class, sizeof (ETaskListSelectorPrivate));
+
+	source_selector_class = E_SOURCE_SELECTOR_CLASS (class);
+	source_selector_class->data_dropped = task_list_selector_data_dropped;
+}
+
+static void
+task_list_selector_init (ETaskListSelector *selector)
+{
+	selector->priv = E_TASK_LIST_SELECTOR_GET_PRIVATE (selector);
+
+	gtk_drag_dest_set (
+		GTK_WIDGET (selector), GTK_DEST_DEFAULT_ALL,
+		drag_types, G_N_ELEMENTS (drag_types),
+		GDK_ACTION_COPY | GDK_ACTION_MOVE);
+}
+
+GType
+e_task_list_selector_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0)) {
+		const GTypeInfo type_info = {
+			sizeof (ETaskListSelectorClass),
+			(GBaseInitFunc) NULL,
+			(GBaseFinalizeFunc) NULL,
+			(GClassInitFunc) task_list_selector_class_init,
+			(GClassFinalizeFunc) NULL,
+			NULL,  /* class_data */
+			sizeof (ETaskListSelector),
+			0,     /* n_preallocs */
+			(GInstanceInitFunc) task_list_selector_init,
+			NULL   /* value_table */
+		};
+
+		type = g_type_register_static (
+			E_TYPE_SOURCE_SELECTOR, "ETaskListSelector",
+			&type_info, 0);
+	}
+
+	return type;
+}
+
+GtkWidget *
+e_task_list_selector_new (ESourceList *source_list)
+{
+	g_return_val_if_fail (E_IS_SOURCE_LIST (source_list), NULL);
+
+	return g_object_new (
+		E_TYPE_TASK_LIST_SELECTOR,
+		"source-list", source_list, NULL);
+}