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/* -*- 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
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