office-gobmx/svtools/source/control/asynclink.cxx
2011-11-27 13:24:31 -06:00

134 lines
3.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
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*
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
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************************************************************************/
#include <svtools/asynclink.hxx>
#include <osl/mutex.hxx>
#include <tools/debug.hxx>
#include <vcl/timer.hxx>
#include <vcl/svapp.hxx>
//--------------------------------------------------------------------
namespace svtools {
void AsynchronLink::CreateMutex()
{
if( !_pMutex ) _pMutex = new osl::Mutex;
}
void AsynchronLink::Call( void* pObj, sal_Bool
#ifdef DBG_UTIL
bAllowDoubles
#endif
, sal_Bool bUseTimer )
{
#ifdef DBG_UTIL
if ( bUseTimer || !_bInCall )
DBG_WARNING( "Recursives Call. Eher ueber Timer. TLX Fragen" );
#endif
if( _aLink.IsSet() )
{
_pArg = pObj;
DBG_ASSERT( bAllowDoubles ||
( !_nEventId && ( !_pTimer || !_pTimer->IsActive() ) ),
"Schon ein Call unterwegs" );
if( _nEventId )
{
if( _pMutex ) _pMutex->acquire();
Application::RemoveUserEvent( _nEventId );
if( _pMutex ) _pMutex->release();
}
if( _pTimer )_pTimer->Stop();
if( bUseTimer )
{
if( !_pTimer )
{
_pTimer = new Timer;
_pTimer->SetTimeout( 0 );
_pTimer->SetTimeoutHdl( STATIC_LINK(
this, AsynchronLink, HandleCall) );
}
_pTimer->Start();
}
else
{
if( _pMutex ) _pMutex->acquire();
Application::PostUserEvent( _nEventId, STATIC_LINK( this, AsynchronLink, HandleCall), 0 );
if( _pMutex ) _pMutex->release();
}
}
}
AsynchronLink::~AsynchronLink()
{
if( _nEventId )
{
Application::RemoveUserEvent( _nEventId );
}
delete _pTimer;
if( _pDeleted ) *_pDeleted = sal_True;
delete _pMutex;
}
IMPL_STATIC_LINK( AsynchronLink, HandleCall, void*, EMPTYARG )
{
if( pThis->_pMutex ) pThis->_pMutex->acquire();
pThis->_nEventId = 0;
if( pThis->_pMutex ) pThis->_pMutex->release();
pThis->Call_Impl( pThis->_pArg );
return 0;
}
void AsynchronLink::ClearPendingCall()
{
if( _pMutex ) _pMutex->acquire();
if( _nEventId )
{
Application::RemoveUserEvent( _nEventId );
_nEventId = 0;
}
if( _pMutex ) _pMutex->release();
if( _pTimer ) _pTimer->Stop();
}
void AsynchronLink::Call_Impl( void* pArg )
{
_bInCall = sal_True;
sal_Bool bDeleted = sal_False;
_pDeleted = &bDeleted;
_aLink.Call( pArg );
if( !bDeleted )
{
_bInCall = sal_False;
_pDeleted = 0;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */