From 3c95cde33cd59f99fcc90313220dfc539acdef7e Mon Sep 17 00:00:00 2001
From: Mathew Sutcliffe <oktal3700@gmail.com>
Date: Fri, 25 Sep 2015 00:48:51 +0100
Subject: [PATCH] refs #271 C++ API wrapper for the X-Plane Plugin SDK's C API
 for custom commands.

---
 src/xbus/command.h | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 src/xbus/command.h

diff --git a/src/xbus/command.h b/src/xbus/command.h
new file mode 100644
index 000000000..956d0ddf5
--- /dev/null
+++ b/src/xbus/command.h
@@ -0,0 +1,53 @@
+/* Copyright (C) 2015
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#ifndef BLACKSIM_XBUS_COMMAND_H
+#define BLACKSIM_XBUS_COMMAND_H
+
+//! \file
+
+#include <XPLMUtilities.h>
+#include <functional>
+
+namespace XBus
+{
+
+    /*!
+     * Class-based interface to X-Plane's custom command API.
+     */
+    class CCommand
+    {
+    public:
+        //! Constructor.
+        CCommand(const char *name, const char *description, std::function<void()> handler) : m_handler(handler)
+        {
+            m_command = XPLMCreateCommand(name, description);
+            XPLMRegisterCommandHandler(m_command, callback, false, static_cast<void*>(this));
+        }
+
+        //! Destructor.
+        ~CCommand()
+        {
+            XPLMUnregisterCommandHandler(m_command, callback, false, static_cast<void*>(this));
+        }
+
+    private:
+        static int callback(XPLMCommandRef, XPLMCommandPhase phase, void *refcon)
+        {
+            if (phase == xplm_CommandBegin) { (static_cast<CCommand*>(refcon)->m_handler)(); }
+            return 1;
+        }
+
+        std::function<void()> m_handler;
+        XPLMCommandRef m_command;
+    };
+
+}
+
+#endif