/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _CANCELCHECK_H_INCLUDED_
#define _CANCELCHECK_H_INCLUDED_
/* @(#$Id: cancelcheck.h,v 1.3 2007-07-12 13:41:54 dockes Exp $ (C) 2005 J.F.Dockes */
class CancelExcept {};
class CancelCheck {
public:
static CancelCheck& instance() {
static CancelCheck ck;
return ck;
}
void setCancel(bool on = true) {
cancelRequested = on;
}
void checkCancel() {
if (cancelRequested) {
cancelRequested = false;
throw CancelExcept();
}
}
bool cancelState() {return cancelRequested;}
private:
bool cancelRequested;
CancelCheck() : cancelRequested(false) {}
CancelCheck& operator=(CancelCheck&);
CancelCheck(const CancelCheck&);
};
#endif /* _CANCELCHECK_H_INCLUDED_ */