Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/include/xmloff/prhdlfac.hxx b/include/xmloff/prhdlfac.hxx
new file mode 100644
index 000000000..e9eb038da
--- /dev/null
+++ b/include/xmloff/prhdlfac.hxx
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_XMLOFF_PRHDLFAC_HXX
+#define INCLUDED_XMLOFF_PRHDLFAC_HXX
+
+#include <xmloff/dllapi.h>
+#include <sal/types.h>
+
+#include <salhelper/simplereferenceobject.hxx>
+#include <memory>
+
+class XMLPropertyHandler;
+
+/**
+ This class is a base-class to create XMLPropertyHandler.
+ It creates PropertyHandler for given XML-types and store
+ them in an internal cache. They'll be deleted at destruction-
+ time.
+ For create your own PropertyHandler for specific XML-types
+ you have to override the virtual method GetPropertyHandler
+ ( see below ).
+*/
+class XMLOFF_DLLPUBLIC XMLPropertyHandlerFactory : public salhelper::SimpleReferenceObject
+{
+    struct Impl;
+    std::unique_ptr<Impl> mpImpl;
+
+    XMLPropertyHandlerFactory(const XMLPropertyHandlerFactory&) = delete;
+    XMLPropertyHandlerFactory& operator=(const XMLPropertyHandlerFactory&) = delete;
+
+public:
+    XMLPropertyHandlerFactory();
+    virtual ~XMLPropertyHandlerFactory() override;
+
+    /**
+    This method retrieves a PropertyHandler for the given XML-type.
+    To extend this method for more XML-types override this method
+    like the example below. If you call the method of the base-class
+    you get propertyhandler for basic-XML-types ( e.g. for color, percent, ... ).
+    After that you could create your new XML-types. After creating a new type
+    you have to put the pointer into the cache via the method
+    PutHdlCache( sal_Int32 , XMLPropertyHandler* ).
+
+    virtual const XMLPropertyHandler* GetPropertyHandler( sal_Int32 nType ) const
+    {
+        XMLPropertyHandler* pHdl = XMLPropertyHandlerFactory::GetPropertyHandler( nType );
+
+        if( !pHdl )
+        {
+            switch( nType )
+            {
+                case XML_TYPE_XYZ :
+                    pHdl = new XML_xyz_PropHdl;
+                    break;
+                case ...
+                :
+                :
+            }
+
+            if( pHdl )
+                PutHdlCache( nType, pHdl );
+        }
+
+        return pHdl;
+    }
+    */
+    virtual const XMLPropertyHandler* GetPropertyHandler(sal_Int32 nType) const;
+
+    /** helper method to statically create a property handler; this will not
+     *  use the handler cache. This method should only be called in special
+     *  circumstances; calling GetPropertyHandler is almost always
+     *  preferable. */
+    static std::unique_ptr<XMLPropertyHandler> CreatePropertyHandler(sal_Int32 nType);
+
+protected:
+    /** Retrieves a PropertyHandler from the internal cache */
+    const XMLPropertyHandler* GetHdlCache(sal_Int32 nType) const;
+    /** Puts a PropertyHandler into the internal cache */
+    void PutHdlCache(sal_Int32 nType, const XMLPropertyHandler* pHdl) const;
+
+private:
+    /** Retrieves ( creates if necessary ) PropertyHandler for
+        basic XML-types */
+    SAL_DLLPRIVATE const XMLPropertyHandler* GetBasicHandler(sal_Int32 nType) const;
+};
+
+#endif // INCLUDED_XMLOFF_PRHDLFAC_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */