Initial QSfera import

Desktop/src/plugins/vfs/cfapi/shellext/cfapishellintegrationclassfactory.h

@@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#pragma once
+#include <unknwn.h>
+
+namespace VfsShellExtensions {
+
+using PFNCREATEINSTANCE = HRESULT (*)(REFIID riid, void **ppvObject);
+struct ClassObjectInit
+{
+    const CLSID *clsid;
+    PFNCREATEINSTANCE pfnCreate;
+};
+
+class CfApiShellIntegrationClassFactory : public IClassFactory
+{
+public:
+    CfApiShellIntegrationClassFactory(PFNCREATEINSTANCE pfnCreate);
+
+    IFACEMETHODIMP_(ULONG) AddRef();
+    IFACEMETHODIMP CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppv);
+
+    static HRESULT CreateInstance(REFCLSID clsid, const ClassObjectInit *classObjectInits, size_t classObjectInitsCount, REFIID riid, void **ppv);
+
+    IFACEMETHODIMP LockServer(BOOL fLock);
+    IFACEMETHODIMP QueryInterface(REFIID riid, void **ppv);
+    IFACEMETHODIMP_(ULONG) Release();
+
+protected:
+    ~CfApiShellIntegrationClassFactory();
+
+private:
+    long _referenceCount;
+
+    PFNCREATEINSTANCE _pfnCreate;
+};
+}