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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#ifndef _COMPHELPER_OTRANSACTEDFILESTREAM_HXX
#define _COMPHELPER_OTRANSACTEDFILESTREAM_HXX

#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/embed/XTransactedObject.hpp>
#include <com/sun/star/beans/XPropertySetInfo.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/ucb/XSimpleFileAccess.hpp>
#include <osl/mutex.hxx>
#include <cppuhelper/implbase7.hxx>
#include "comphelper/comphelperdllapi.h"

namespace comphelper
{


//==================================================================
// OTransactedFileStream
// allows to get transacted stream access to a file
// the file contents are automatically truncated, but the file
// itself is changed only on commit
// after the first commit the stream switches to direct mode
//==================================================================

struct TTFileStreamData_Impl;
class COMPHELPER_DLLPUBLIC OTruncatedTransactedFileStream
		: public ::cppu::WeakImplHelper7 <
										::com::sun::star::io::XStream,
										::com::sun::star::io::XInputStream,
										::com::sun::star::io::XOutputStream,
										::com::sun::star::io::XTruncate,
										::com::sun::star::io::XSeekable,
										::com::sun::star::beans::XPropertySetInfo,
										::com::sun::star::beans::XPropertySet >
{
	::osl::Mutex	m_aMutex;
	TTFileStreamData_Impl* m_pStreamData;

	void CommonInit_Impl(
			const ::rtl::OUString& aURL,
			const ::com::sun::star::uno::Reference< ::com::sun::star::ucb::XSimpleFileAccess >& xFileAccess,
			const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory,
			sal_Bool bDeleteOptionIsProvided );

	void CloseAll_Impl();

public:

	OTruncatedTransactedFileStream( const ::rtl::OUString& aURL, const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory );

	OTruncatedTransactedFileStream( const ::rtl::OUString& aURL, const ::com::sun::star::uno::Reference< ::com::sun::star::ucb::XSimpleFileAccess >& xFileAccess, const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory );

	OTruncatedTransactedFileStream( const ::rtl::OUString& aURL, const ::com::sun::star::uno::Reference< ::com::sun::star::ucb::XSimpleFileAccess >& xFileAccess, const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& xFactory, sal_Bool bDeleteIfNotCommited );

	~OTruncatedTransactedFileStream();

	void Commit_Impl();
	void Revert_Impl();

// com::sun::star::io::XStream
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::io::XInputStream > SAL_CALL getInputStream(  ) throw (::com::sun::star::uno::RuntimeException);
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::io::XOutputStream > SAL_CALL getOutputStream(  ) throw (::com::sun::star::uno::RuntimeException);

// com::sun::star::io::XInputStream
    virtual ::sal_Int32 SAL_CALL readBytes( ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nBytesToRead ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual ::sal_Int32 SAL_CALL readSomeBytes( ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData, ::sal_Int32 nMaxBytesToRead ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL skipBytes( ::sal_Int32 nBytesToSkip ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual ::sal_Int32 SAL_CALL available(  ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL closeInput(  ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);

// com::sun::star::io::XOutputStream
    virtual void SAL_CALL writeBytes( const ::com::sun::star::uno::Sequence< ::sal_Int8 >& aData ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL flush(  ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL closeOutput(  ) throw (::com::sun::star::io::NotConnectedException, ::com::sun::star::io::BufferSizeExceededException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);

// com::sun::star::io::XTruncate
    virtual void SAL_CALL truncate(  ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);

// com::sun::star::io::XSeekable
    virtual void SAL_CALL seek( ::sal_Int64 location ) throw (::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual ::sal_Int64 SAL_CALL getPosition(  ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
    virtual ::sal_Int64 SAL_CALL getLength(  ) throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);

// ::com::sun::star::beans::XPropertySetInfo
    virtual ::com::sun::star::uno::Sequence< ::com::sun::star::beans::Property > SAL_CALL getProperties(  ) throw (::com::sun::star::uno::RuntimeException);
    virtual ::com::sun::star::beans::Property SAL_CALL getPropertyByName( const ::rtl::OUString& aName ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::uno::RuntimeException);
    virtual ::sal_Bool SAL_CALL hasPropertyByName( const ::rtl::OUString& Name ) throw (::com::sun::star::uno::RuntimeException);

// com::sun::star::beans::XPropertySet
    virtual ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySetInfo > SAL_CALL getPropertySetInfo(  ) throw (::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL setPropertyValue( const ::rtl::OUString& aPropertyName, const ::com::sun::star::uno::Any& aValue ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::beans::PropertyVetoException, ::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);
    virtual ::com::sun::star::uno::Any SAL_CALL getPropertyValue( const ::rtl::OUString& PropertyName ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL addPropertyChangeListener( const ::rtl::OUString& aPropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& xListener ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL removePropertyChangeListener( const ::rtl::OUString& aPropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& aListener ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL addVetoableChangeListener( const ::rtl::OUString& PropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XVetoableChangeListener >& aListener ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);
    virtual void SAL_CALL removeVetoableChangeListener( const ::rtl::OUString& PropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XVetoableChangeListener >& aListener ) throw (::com::sun::star::beans::UnknownPropertyException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException);

};

} // namespace comphelper

#endif //_COMPHELPER_OTRANSACTEDFILESTREAM_HXX


