Remove libnotify dependency

Instead just talk directly to the service. This fixes *sending*
a notification being blocking IO.

1 files changed, 147 insertions, 0 deletions

diff --git a/src/fe-gtk/notifications/notification-freedesktop.c b/src/fe-gtk/notifications/notification-freedesktop.c
new file mode 100644
index 00000000..920a879a
--- /dev/null
+++ b/src/fe-gtk/notifications/notification-freedesktop.c
@@ -0,0 +1,147 @@
+/* HexChat
+ * Copyright (C) 2021 Patrick Griffis.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+
+static GDBusProxy *fdo_notifications;
+static gboolean strip_markup;
+
+static void
+on_notify_ready (GDBusProxy *proxy, GAsyncResult *res, gpointer user_data)
+{
+	GError *error = NULL;
+	guint32 notification_id;
+	GVariant *response = g_dbus_proxy_call_finish (proxy, res, &error);
+	if (error)
+	{
+		g_info ("Failed to send notification: %s", error->message);
+		g_error_free (error);
+		return;
+	}
+
+	g_variant_get (response, "(u)", &notification_id);
+	g_info ("Notification sent. ID=%u", notification_id);
+
+	g_variant_unref (response);
+}
+
+void
+notification_backend_show (const char *title, const char *text)
+{
+	GVariantBuilder params;
+
+	g_assert (fdo_notifications);
+
+    if (strip_markup)
+		text = g_markup_escape_text (text, -1);
+
+	g_variant_builder_init (&params, G_VARIANT_TYPE ("(susssasa{sv}i)"));
+	g_variant_builder_add (&params, "s", "hexchat"); /* App name */
+	g_variant_builder_add (&params, "u", 0); /* ID, 0 means don't replace */
+	g_variant_builder_add (&params, "s", ""); /* App icon (set from hints instead) */
+	g_variant_builder_add (&params, "s", title);
+	g_variant_builder_add (&params, "s", text);
+	g_variant_builder_add (&params, "as", NULL); /* Actions */
+
+	/* Hints */
+	g_variant_builder_open (&params, G_VARIANT_TYPE ("a{sv}"));
+	g_variant_builder_open (&params, G_VARIANT_TYPE ("{sv}"));
+	g_variant_builder_add (&params, "s", "desktop-entry");
+	g_variant_builder_add (&params, "v", g_variant_new_string ("io.github.Hexchat"));
+	g_variant_builder_close (&params);
+	g_variant_builder_close (&params);
+
+	g_variant_builder_add (&params, "i", -1); /* Expiration */
+
+	g_dbus_proxy_call (fdo_notifications,
+					   "Notify",
+					   g_variant_builder_end (&params),
+					   G_DBUS_CALL_FLAGS_NONE,
+					   1000,
+					   NULL,
+                       (GAsyncReadyCallback)on_notify_ready,
+					   NULL);
+
+    if (strip_markup)
+        g_free ((char*)text);
+}
+
+int
+notification_backend_init (const char **error)
+{
+    GError *err = NULL;
+    GVariant *response;
+	char **capabilities;
+	guint i;
+
+    fdo_notifications = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
+                                                       G_DBUS_PROXY_FLAGS_NONE,
+                                                       NULL,
+                                                       "org.freedesktop.Notifications",
+                                                       "/org/freedesktop/Notifications",
+                                                       "org.freedesktop.Notifications",
+                                                       NULL,
+                                                       &err);
+
+    if (err)
+        goto return_error;
+
+    response = g_dbus_proxy_call_sync (fdo_notifications,
+                                       "GetCapabilities",
+                                       NULL,
+                                       G_DBUS_CALL_FLAGS_NONE,
+                                       30,
+                                       NULL,
+                                       &err);
+
+    if (err)
+	{
+		g_clear_object (&fdo_notifications);
+        goto return_error;
+	}
+
+	g_variant_get (response, "(^a&s)", &capabilities);
+	for (i = 0; capabilities[i]; i++)
+	{
+		if (strcmp (capabilities[i], "body-markup") == 0)
+			strip_markup = TRUE;
+	}
+
+	g_free (capabilities);
+	g_variant_unref (response);
+    return 1;
+
+return_error:
+    *error = g_strdup (err->message);
+    g_error_free (err);
+    return 0;
+}
+
+void
+notification_backend_deinit (void)
+{
+    g_clear_object (&fdo_notifications);
+}
+
+int
+notification_backend_supported (void)
+{
+    return fdo_notifications != NULL;
+}