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#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>

#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <osl/mutex.hxx>

#include <svtools/cliplistener.hxx>
#include <svtools/transfer.hxx>

using namespace ::com::sun::star;

// -----------------------------------------------------------------------------

TransferableClipboardListener::TransferableClipboardListener( const Link& rCallback ) :
    aLink( rCallback )
{
}

TransferableClipboardListener::~TransferableClipboardListener()
{
}

void SAL_CALL TransferableClipboardListener::disposing( const lang::EventObject& )
                                                        throw(uno::RuntimeException)
{
}

void SAL_CALL TransferableClipboardListener::changedContents(
                            const datatransfer::clipboard::ClipboardEvent& rEventObject )
                                                        throw(uno::RuntimeException)
{
    if ( aLink.IsSet() )
    {
        const SolarMutexGuard aGuard;

        TransferableDataHelper aDataHelper( rEventObject.Contents );
        aLink.Call( &aDataHelper );
    }
}

void TransferableClipboardListener::AddRemoveListener( Window* pWin, sal_Bool bAdd )
{
    try
    {
        if ( pWin )
        {
            uno::Reference<datatransfer::clipboard::XClipboard> xClipboard = pWin->GetClipboard();
            uno::Reference<datatransfer::clipboard::XClipboardNotifier> xClpbrdNtfr( xClipboard, uno::UNO_QUERY );
            if( xClpbrdNtfr.is() )
            {
                uno::Reference<datatransfer::clipboard::XClipboardListener> xClipEvtLstnr( this );
                if( bAdd )
                    xClpbrdNtfr->addClipboardListener( xClipEvtLstnr );
                else
                    xClpbrdNtfr->removeClipboardListener( xClipEvtLstnr );
            }
        }
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }
}

void TransferableClipboardListener::ClearCallbackLink()
{
    aLink = Link();
}

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