1 files changed, 43 insertions, 0 deletions
diff --git a/xbmc/interfaces/legacy/AddonCallback.h b/xbmc/interfaces/legacy/AddonCallback.h
new file mode 100644
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+++ b/xbmc/interfaces/legacy/AddonCallback.h
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "AddonClass.h"
+#include "CallbackFunction.h"
+#include "CallbackHandler.h"
+#include "LanguageHook.h"
+
+namespace XBMCAddon
+{
+
+  /**
+   * This class is the superclass for all API classes that are expected
+   * to be able to handle cross-language polymorphism.
+   */
+  class AddonCallback : public AddonClass
+  {
+  protected:
+    AddonClass::Ref<CallbackHandler> handler;
+
+    bool hasHandler() { return handler.isNotNull(); }
+
+    inline AddonCallback() : handler(NULL)
+    {
+      // if there is a LanguageHook, it should be set already.
+      if (languageHook != NULL)
+        setHandler(languageHook->GetCallbackHandler());
+    }
+  public:
+
+    ~AddonCallback() override;
+
+    inline void setHandler(CallbackHandler* _handler) { handler = _handler; }
+    void invokeCallback(Callback* callback);
+  };
+}