include/oox/ole/olestorage.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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   9  * This file incorporates work covered by the following license notice:
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  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
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  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_OOX_OLE_OLESTORAGE_HXX
  21 #define INCLUDED_OOX_OLE_OLESTORAGE_HXX
  22
  23 #include <vector>
  24
  25 #include <com/sun/star/uno/Reference.hxx>
  26 #include <oox/dllapi.h>
  27 #include <oox/helper/storagebase.hxx>
  28 #include <rtl/ustring.hxx>
  29
  30 namespace com { namespace sun { namespace star {
  31     namespace container { class XNameContainer; }
  32     namespace embed { class XStorage; }
  33     namespace io { class XInputStream; }
  34     namespace io { class XOutputStream; }
  35     namespace io { class XStream; }
  36     namespace uno { class XComponentContext; }
  37 } } }
  38
  39 namespace oox {
  40 namespace ole {
  41
  42
  43 /** Implements stream access for binary OLE storages. */
  44 class OOX_DLLPUBLIC OleStorage : public StorageBase
  45 {
  46 public:
  47     explicit            OleStorage(
  48                             const css::uno::Reference< css::uno::XComponentContext >& rxContext,
  49                             const css::uno::Reference< css::io::XInputStream >& rxInStream,
  50                             bool bBaseStreamAccess );
  51
  52     explicit            OleStorage(
  53                             const css::uno::Reference< css::uno::XComponentContext >& rxContext,
  54                             const css::uno::Reference< css::io::XStream >& rxOutStream,
  55                             bool bBaseStreamAccess );
  56
  57     virtual             ~OleStorage() override;
  58
  59 private:
  60     explicit            OleStorage(
  61                             const OleStorage& rParentStorage,
  62                             const css::uno::Reference< css::container::XNameContainer >& rxStorage,
  63                             const OUString& rElementName,
  64                             bool bReadOnly );
  65     explicit            OleStorage(
  66                             const OleStorage& rParentStorage,
  67                             const css::uno::Reference< css::io::XStream >& rxOutStream,
  68                             const OUString& rElementName );
  69
  70     /** Initializes the API storage object for input. */
  71     void                initStorage( const css::uno::Reference< css::io::XInputStream >& rxInStream );
  72     /** Initializes the API storage object for input/output. */
  73     void                initStorage( const css::uno::Reference< css::io::XStream >& rxOutStream );
  74
  75     /** Returns true, if the object represents a valid storage. */
  76     virtual bool        implIsStorage() const override;
  77
  78     /** Returns the com.sun.star.embed.XStorage interface of the current storage.
  79
  80         @attention
  81             This function is not implemented for binary OLE storages.
  82      */
  83     virtual css::uno::Reference< css::embed::XStorage >
  84                         implGetXStorage() const override;
  85
  86     /** Returns the names of all elements of this storage. */
  87     virtual void        implGetElementNames( ::std::vector< OUString >& orElementNames ) const override;
  88
  89     /** Opens and returns the specified sub storage from the storage. */
  90     virtual StorageRef  implOpenSubStorage( const OUString& rElementName, bool bCreateMissing ) override;
  91
  92     /** Opens and returns the specified input stream from the storage. */
  93     virtual css::uno::Reference< css::io::XInputStream >
  94                         implOpenInputStream( const OUString& rElementName ) override;
  95
  96     /** Opens and returns the specified output stream from the storage. */
  97     virtual css::uno::Reference< css::io::XOutputStream >
  98                         implOpenOutputStream( const OUString& rElementName ) override;
  99
 100     /** Commits the current storage. */
 101     virtual void        implCommit() const override;
 102
 103 private:
 104     css::uno::Reference< css::uno::XComponentContext >
 105                         mxContext;          ///< Component context with service manager.
 106     css::uno::Reference< css::container::XNameContainer >
 107                         mxStorage;          ///< Access to elements of this sub storage.
 108     const OleStorage*   mpParentStorage;    ///< Parent OLE storage that contains this storage.
 109 };
 110
 111
 112 } // namespace ole
 113 } // namespace oox
 114
 115 #endif
 116
 117 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */