Source
xxxxxxxxxx
//# State.h: global display state
//# Copyright (C) 2009
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
namespace casa { //# NAMESPACE CASA - BEGIN
namespace display { //# NAMESPACE DISPLAY - BEGIN
class state {
friend class stateCleanup;
public:
static state &instance( ) {
return initialized == false ? startup( ) : *singleton;
}
// allows classes (primarily in the redisplay chain) to tell if we
// are currently outputing to a file...
bool fileOutputMode( );
// begin file output
void beginFileOutputMode( );
// end file output
void endFileOutputMode( );
private:
static state *singleton;
state( ) : file_output_mode_count_(0) { }
~state( ) { }
static state &startup( );
static void shutdown( );
int file_output_mode_count_;
static bool initialized;
};