////////////////////////////////////////////////////////////////////////////////
//
// This file is part of Toolkit for Conceptual Modeling (TCM).
// (c) copyright 1996, Vrije Universiteit Amsterdam.
// Author: Frank Dehne (frank@cs.vu.nl).
//
// TCM 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.
//
// TCM 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 TCM; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
////////////////////////////////////////////////////////////////////////////////
#include "processgraphroot.h"
#include "rpgraph.h"
#include "lstring.h"
#include "inputfile.h"

ProcessGraphRoot::ProcessGraphRoot(RPGraph *g): ProcessGraphNode(g) {
	string s = "UNTITLED";
	ProcessGraphNode::SetName(&s);
}

Subject::NameErrType ProcessGraphRoot::SetName(const string *s) {
	if (*s != "" && s->letters() == 0)
		return IMPOSSIBLE_NAME;
	else if (*s != *GetName() && *s != "" &&
		(GetGraph()->CountNodes(s, Code::PROCESS_GRAPH_ROOT) != 0))
		return DOUBLE_NODE;
	return ProcessGraphNode::SetName(s);
}

bool ProcessGraphRoot::ReadMembers(InputFile *ifile, double format) {
	if (!ProcessGraphNode::ReadMembers(ifile, format))
		return False;
	if (format < 1.20) {
		string s;
		if (!ifile->ReadStringAttribute("ProcessGraphName", &s))
			return False;
		return SetName(&s)==Subject::OK;
	}
	return True;
}