////////////////////////////////////////////////////////////////////////////////
//
// This file is part of Toolkit for Conceptual Modeling (TCM).
// (c) copyright 1995, 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 "shapeview.h"
#include "diagram.h"
#include "subject.h"
#include "gshape.h"
#include "diagramviewer.h"
#include "deletesubjectscmd.h"

DeleteSubjectsCmd::DeleteSubjectsCmd(ShapeView *v): Command(
		v->GetViewer()->GetDiagram(), v->GetViewer()) {
	view = v;
	diagram = v->GetViewer()->GetDiagram();
	subjects = new List<Subject *>;
	shapes = new List<GShape *>;
}

void DeleteSubjectsCmd::Execute() {
	view->RemoveShapes(shapes);
	diagram->RemoveSubjects(subjects);
	Command::Execute();
}

void DeleteSubjectsCmd::UnExecute() {
	view->AddShapes(shapes);
	diagram->AddSubjects(subjects);
	Command::UnExecute();
}

DeleteSubjectsCmd::~DeleteSubjectsCmd() {
	if (CmdDone()) {
		subjects->clear();
		shapes->clear();
	}
	delete subjects;
	delete shapes;
}