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/////////////////////////////////////////////////////////////////////////////
// Name: cpp/e_cback.cpp
// Purpose: implementation for e_cback.h
// Author: Mattia Barbon
// Modified by:
// Created: 29/10/2000
// RCS-ID: $Id: e_cback.cpp 2454 2008-08-31 11:12:47Z mbarbon $
// Copyright: (c) 2000-2002, 2004-2008 Mattia Barbon
// Licence: This program is free software; you can redistribute it and/or
// modify it under the same terms as Perl itself
/////////////////////////////////////////////////////////////////////////////
wxPliEventCallback::wxPliEventCallback( SV* method, SV* self )
{
dTHX;
m_method = method;
SvREFCNT_inc( m_method );
m_self = self;
SvREFCNT_inc( m_self );
m_is_method = !SvROK( m_method ) || !SvRV( m_method );
}
wxPliEventCallback::~wxPliEventCallback()
{
dTHX;
SvREFCNT_dec( m_method );
SvREFCNT_dec( m_self );
}
class wxPliGuard
{
public:
wxPliGuard()
{
m_sv = NULL;
}
~wxPliGuard()
{
if( m_sv )
{
dTHX;
wxPli_thread_sv_unregister( aTHX_ wxPli_get_class( aTHX_ m_sv ),
(void*)SvIV( m_sv ), m_sv );
sv_setiv( m_sv, 0 );
}
}
void SetSV( SV* sv ) { m_sv = sv; }
private:
SV* m_sv;
};
void wxPliEventCallback::Handler( wxEvent& event )
{
wxPliEventCallback* This = (wxPliEventCallback*) event.m_callbackUserData;
dTHX;
dSP;
ENTER;
SAVETMPS;
{
// similar to wxPli_object_2_sv
wxPliGuard guard;
SV* e = 0;
SV* rv = 0;
wxClassInfo *ci = event.GetClassInfo();
const wxChar* classname = ci->GetClassName();
#if wxUSE_UNICODE
if( wcsncmp( classname, wxT("wxPl"), 4 ) == 0 )
#else
if( strnEQ( classname, "wxPl", 4 ) )
#endif
{
wxPliClassInfo* cci = (wxPliClassInfo*)ci;
wxPliSelfRef* sr = cci->m_func( &event );
if( sr )
{
// this needs to have the refcount incremented, otherwise
// the refcount will be decremented one time too much when
// exiting from the handler
e = sv_2mortal( newRV_inc( SvRV( sr->m_self ) ) );
}
}
if( !e )
{
char buffer[WXPL_BUF_SIZE];
const char* CLASS = wxPli_cpp_class_2_perl( classname, buffer );
e = sv_newmortal();
sv_setref_pv( e, CHAR_P CLASS, &event );
rv = SvRV( e );
// corner case: prevent destruction if referrer is
// destroyed
SvREFCNT_inc( rv );
sv_2mortal( rv );
guard.SetSV( rv );
wxPli_thread_sv_register( aTHX_ CLASS, &event, e );
}
PUSHMARK( SP );
XPUSHs( This->m_self );
XPUSHs( e );
PUTBACK;
if( This->m_is_method )
{
call_method( SvPV_nolen( This->m_method ), G_EVAL|G_VOID|G_DISCARD );
}
else
{
call_sv( This->m_method, G_EVAL|G_VOID|G_DISCARD );
}
SPAGAIN;
}
if( SvTRUE( ERRSV ) )
{
croak( Nullch );
}
PUTBACK;
FREETMPS;
LEAVE;
}
// Local variables: //
// mode: c++ //
// End: //
|
