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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef _XMLOFF_PROPERTYHANDLERFACTORY_HXX
      21             : #define _XMLOFF_PROPERTYHANDLERFACTORY_HXX
      22             : 
      23             : #include "sal/config.h"
      24             : #include "xmloff/dllapi.h"
      25             : #include "sal/types.h"
      26             : 
      27             : #include <map>
      28             : #include <xmloff/uniref.hxx>
      29             : #include <xmloff/xmlprhdl.hxx>
      30             : 
      31             : /**
      32             :  This class is a base-class to create XMLPropertyHandler.
      33             :  It creates PropertyHandler for given XML-types and store
      34             :  them in an internal cache. They'll be deleted at destruction-
      35             :  time.
      36             :  For create your own PropertyHandler for specific XML-types
      37             :  you have to override the virtual method GetPropertyHandler
      38             :  ( see below ).
      39             : */
      40          96 : class XMLOFF_DLLPUBLIC XMLPropertyHandlerFactory : public UniRefBase
      41             : {
      42             : public:
      43             :     virtual ~XMLPropertyHandlerFactory();
      44             : 
      45             :     /**
      46             :     This method retrieves a PropertyHandler for the given XML-type.
      47             :     To extend this method for more XML-types override this method
      48             :     like the example below. If you call the method of the base-class
      49             :     you get propertyhandler for basic-XML-types ( e.g. for color, percent, ... ).
      50             :     Afetr that you could create your new XML-types. After creating a new type
      51             :     you have to put the pointer into the cache via the method
      52             :     PutHdlCache( sal_Int32 , XMLPropertyHandler* ).
      53             : 
      54             :     virtual const XMLPropertyHandler* GetPropertyHandler( sal_Int32 nType ) const
      55             :     {
      56             :         XMLPropertyHandler* pHdl = XMLPropertyHandlerFactory::GetPropertyHandler( nType );
      57             : 
      58             :         if( !pHdl )
      59             :         {
      60             :             switch( nType )
      61             :             {
      62             :                 case XML_TYPE_XYZ :
      63             :                     pHdl = new XML_xyz_PropHdl;
      64             :                     break;
      65             :                 case ...
      66             :                 :
      67             :                 :
      68             :             }
      69             : 
      70             :             if( pHdl )
      71             :                 PutHdlCache( nType, pHdl );
      72             :         }
      73             : 
      74             :         return pHdl;
      75             :     }
      76             :     */
      77             :     virtual const XMLPropertyHandler* GetPropertyHandler( sal_Int32 nType ) const;
      78             : 
      79             :     /** helper method to statically create a property handler; this will not
      80             :      *  use the handler cache. This method should only be called in special
      81             :      *  circumstances; calling GetPropertyHandler is almost always
      82             :      *  preferable. */
      83             :     static const XMLPropertyHandler* CreatePropertyHandler( sal_Int32 nType );
      84             : 
      85             : protected:
      86             :     /** Retrieves a PropertyHandler from the internal cache */
      87             :     XMLPropertyHandler* GetHdlCache( sal_Int32 nType ) const;
      88             :     /** Puts a PropertyHandler into the internal cache */
      89             :     void PutHdlCache( sal_Int32 nType, const XMLPropertyHandler* pHdl ) const;
      90             : 
      91             : private:
      92             :     /** Retrieves ( creates if necessary ) PropertyHandler for
      93             :         basic XML-types */
      94             :     SAL_DLLPRIVATE const XMLPropertyHandler* GetBasicHandler( sal_Int32 nType )
      95             :         const;
      96             : 
      97             :     typedef ::std::map< sal_Int32, XMLPropertyHandler* > CacheMap;
      98             :     CacheMap maHandlerCache;
      99             : };
     100             : 
     101             : #endif  // _XMLOFF_PROPERTYHANDLERFACTORY_HXX
     102             : 
     103             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */