sbxcore.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_BASIC_SBXCORE_HXX
#define INCLUDED_BASIC_SBXCORE_HXX
 
#include <basic/basicdllapi.h>
#include <basic/sbxdef.hxx>
#include <rtl/ustring.hxx>
#include <tools/ref.hxx>
 
class SvStream;
class ErrCode;
 
// The following Macro defines four (five) necessary methods within a
// SBX object. LoadPrivateData() and StorePrivateData() must be implemented.
// They are necessary for loading/storing the data of derived classes.
// Load() and Store() must not be overridden.
 
// This version of the Macros does not define Load/StorePrivateData()-methods
#define SBX_DECL_PERSIST_NODATA( nSbxId, nVer )       \
    virtual sal_uInt16 GetVersion() const override { return nVer;   }    \
    virtual sal_uInt16 GetSbxId() const override   { return nSbxId; }
 
class SbxFactory;
class SbxObject;
class SbxBase;
 
typedef tools::SvRef<SbxBase> SbxBaseRef;
typedef tools::SvRef<SbxObject> SbxObjectRef;
 
class BASIC_DLLPUBLIC SbxBase : virtual public SvRefBase
{
    virtual bool LoadData( SvStream&, sal_uInt16 ) = 0;
    virtual std::pair<bool, sal_uInt32> StoreData( SvStream& ) const = 0;
protected:
    SbxFlagBits nFlags;          // Flag-Bits
 
    SbxBase();
    SbxBase( const SbxBase& );
    SbxBase& operator=( const SbxBase& );
    virtual ~SbxBase() override;
 
    virtual sal_uInt16 GetVersion() const = 0;
    virtual sal_uInt16 GetSbxId() const = 0;
 
public:
    inline void         SetFlags( SbxFlagBits n );
    inline SbxFlagBits  GetFlags() const;
    inline void         SetFlag( SbxFlagBits n );
    inline void         ResetFlag( SbxFlagBits n );
    inline bool         IsSet( SbxFlagBits n ) const;
    inline bool         IsReset( SbxFlagBits n ) const;
    inline bool         CanRead() const;
    inline bool         CanWrite() const;
    inline bool         IsModified() const;
    inline bool         IsHidden() const;
    inline bool         IsVisible() const;
 
    virtual bool        IsFixed() const;
    virtual void        SetModified( bool );
 
    virtual SbxDataType GetType()  const;
 
    virtual void    Clear() = 0;
 
    static SbxBaseRef Load( SvStream& );
    std::pair<bool, sal_uInt32> Store( SvStream& );
    virtual bool    LoadCompleted();
 
    static ErrCode const & GetError();
    static OUString const& GetErrorMsg();
    static void SetError( ErrCode );
    static void SetError(ErrCode, const OUString&);
    static bool IsError();
    static void ResetError();
 
    // Set the factory for Load/Store/Create
    static void AddFactory( SbxFactory* );
    static void RemoveFactory( SbxFactory const * );
 
    static SbxBaseRef Create( sal_uInt16, sal_uInt32 );
    static SbxObjectRef CreateObject( const OUString& );
};
 
inline void SbxBase::SetFlags( SbxFlagBits n )
{ nFlags = n; }
 
inline SbxFlagBits SbxBase::GetFlags() const
{ return nFlags; }
 
inline void SbxBase::SetFlag( SbxFlagBits n )
{ nFlags |= n; }
 
inline void SbxBase::ResetFlag( SbxFlagBits n )
{ nFlags &= ~n; }
 
inline bool SbxBase::IsSet( SbxFlagBits n ) const
{ return ( nFlags & n ) != SbxFlagBits::NONE; }
 
inline bool SbxBase::IsReset( SbxFlagBits n ) const
{ return ( nFlags & n ) == SbxFlagBits::NONE; }
 
inline bool SbxBase::CanRead() const
{ return IsSet( SbxFlagBits::Read ); }
 
inline bool SbxBase::CanWrite() const
{ return IsSet( SbxFlagBits::Write ); }
 
inline bool SbxBase::IsModified() const
{ return IsSet( SbxFlagBits::Modified ); }
 
inline bool SbxBase::IsHidden() const
{ return IsSet( SbxFlagBits::Hidden ); }
 
inline bool SbxBase::IsVisible() const
{ return IsReset( SbxFlagBits::Invisible ); }
 
#endif
 
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