include/xmloff/unointerfacetouniqueidentifiermapper.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   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/.
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   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 INCLUDED_XMLOFF_UNOINTERFACETOUNIQUEIDENTIFIERMAPPER_HXX
  21 #define INCLUDED_XMLOFF_UNOINTERFACETOUNIQUEIDENTIFIERMAPPER_HXX
  22
  23 #include <sal/config.h>
  24 #include <xmloff/dllapi.h>
  25 #include <sal/types.h>
  26
  27 #include <map>
  28 #include <rtl/ustring.hxx>
  29 #include <com/sun/star/uno/XInterface.hpp>
  30
  31 namespace comphelper
  32 {
  33
  34 typedef ::std::map< OUString, css::uno::Reference< css::uno::XInterface > > IdMap_t;
  35
  36 class XMLOFF_DLLPUBLIC UnoInterfaceToUniqueIdentifierMapper
  37 {
  38 public:
  39     UnoInterfaceToUniqueIdentifierMapper();
  40
  41     /** returns a unique identifier for the given uno object. IF a uno object is
  42         registered more than once, the returned identifier is always the same.
  43     */
  44     const OUString& registerReference( const css::uno::Reference< css::uno::XInterface >& rInterface );
  45
  46     /** registers the given uno object with the given identifier.
  47
  48         @returns
  49             false, if the given identifier already exists and is not associated with the given interface
  50     */
  51     bool registerReference( const OUString& rIdentifier, const css::uno::Reference< css::uno::XInterface >& rInterface );
  52
  53     /** always registers the given uno object with the given identifier.
  54
  55         In contrast to registerReference(), this here overwrites any
  56         earlier registration of the same identifier
  57     */
  58     void registerReferenceAlways( const OUString& rIdentifier, const css::uno::Reference< css::uno::XInterface >& rInterface );
  59
  60     /** @returns
  61             the identifier for the given uno object. If this uno object is not already
  62             registered, an empty string is returned
  63     */
  64     const OUString& getIdentifier( const css::uno::Reference< css::uno::XInterface >& rInterface ) const;
  65
  66     /** @returns
  67         the uno object that is registered with the given identifier. If no uno object
  68         is registered with the given identifier, an empty reference is returned.
  69     */
  70     const css::uno::Reference< css::uno::XInterface >& getReference( const OUString& rIdentifier ) const;
  71
  72 private:
  73     bool findReference( const css::uno::Reference< css::uno::XInterface >& rInterface, IdMap_t::const_iterator& rIter ) const;
  74     bool findIdentifier( const OUString& rIdentifier, IdMap_t::const_iterator& rIter ) const;
  75     void insertReference( const OUString& rIdentifier, const css::uno::Reference< css::uno::XInterface >& rInterface );
  76
  77     IdMap_t maEntries;
  78     sal_uInt32 mnNextId;
  79 };
  80
  81 }
  82
  83 #endif
  84
  85 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */