/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.openformula.ui.model2;
import javax.swing.text.BadLocationException;
import javax.swing.text.Position;
public class FormulaDocumentPosition implements Position
{
private FormulaElement node;
private boolean fromStart;
private int offset;
public FormulaDocumentPosition(final FormulaElement node,
final int offset,
final boolean fromStart) throws BadLocationException
{
if (node == null)
{
throw new NullPointerException();
}
if (offset < 0)
{
throw new IllegalArgumentException();
}
if (offset < 0 || offset > node.getEndOffset())
{
throw new BadLocationException("Offset not valid", offset);
}
this.node = node;
this.fromStart = fromStart;
this.offset = offset;
}
/**
* Fetches the current offset within the document.
*
* @return the offset >= 0
*/
public int getOffset()
{
if (fromStart)
{
return node.getStartOffset() + offset;
}
else
{
return node.getEndOffset() - offset;
}
}
}