lib/dbus/Glue: singleton for global initialization

src/lib/dbus/Glue.cxx

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2003-2018 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "Glue.hxx"
+
+namespace ODBus {
+
+void
+Glue::Connect()
+{
+	watch.SetConnection(Connection::GetSystem());
+
+	dbus_connection_set_exit_on_disconnect(GetConnection(), false);
+}
+
+void
+Glue::Disconnect()
+{
+	watch.SetConnection(Connection());
+}
+
+void
+Glue::OnDBusClosed() noexcept
+{
+	// TODO: reconnect
+}
+
+}

src/lib/dbus/Glue.hxx

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2003-2018 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_DBUS_GLUE_HXX
+#define MPD_DBUS_GLUE_HXX
+
+#include "Watch.hxx"
+
+class EventLoop;
+
+namespace ODBus {
+
+/**
+ * A class which manages the D-Bus client connection.
+ */
+class Glue final : ODBus::WatchManagerObserver {
+	WatchManager watch;
+
+public:
+	explicit Glue(EventLoop &event_loop)
+		:watch(event_loop, *this) {
+		Connect();
+	}
+
+	~Glue() noexcept {
+		Disconnect();
+	}
+
+	EventLoop &GetEventLoop() noexcept {
+		return watch.GetEventLoop();
+	}
+
+	Connection &GetConnection() noexcept {
+		return watch.GetConnection();
+	}
+
+private:
+	void Connect();
+	void Disconnect();
+
+	/* virtual methods from class ODBus::WatchManagerObserver */
+	void OnDBusClosed() noexcept override;
+};
+
+}
+
+#endif