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