/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: FitPositionReadHandler.java 6653 2008-12-02 14:53:40Z tmorgner $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.style.parser.stylehandler.box;
import org.jfree.layouting.input.style.StyleKey;
import org.jfree.layouting.input.style.parser.CSSValueFactory;
import org.jfree.layouting.input.style.parser.stylehandler.OneOfConstantsReadHandler;
import org.jfree.layouting.input.style.values.CSSAutoValue;
import org.jfree.layouting.input.style.values.CSSNumericType;
import org.jfree.layouting.input.style.values.CSSNumericValue;
import org.jfree.layouting.input.style.values.CSSValue;
import org.jfree.layouting.input.style.values.CSSValuePair;
import org.w3c.css.sac.LexicalUnit;
/**
* Creation-Date: 27.11.2005, 21:48:44
*
* @author Thomas Morgner
*/
public class FitPositionReadHandler extends OneOfConstantsReadHandler
{
public static final CSSNumericValue CENTER =
CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, 50);
public static final CSSNumericValue TOP =
CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, 0);
public static final CSSNumericValue LEFT =
CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, 0);
public static final CSSNumericValue BOTTOM =
CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, 100);
public static final CSSNumericValue RIGHT =
CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, 100);
public FitPositionReadHandler()
{
super(false);
}
public CSSValue createValue(final StyleKey name, LexicalUnit value)
{
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
final String stringValue = value.getStringValue();
if ("auto".equalsIgnoreCase(stringValue))
{
return CSSAutoValue.getInstance();
}
}
final CSSValue firstPosition = parseFirstPosition (value);
if (firstPosition == null)
{
return null;
}
value = value.getNextLexicalUnit();
final CSSValue secondPosition = parseSecondPosition(value, firstPosition);
if (secondPosition == null)
{
return null;
}
return createResultList(firstPosition, secondPosition);
}
protected CSSValue parseFirstPosition(final LexicalUnit value)
{
if (value == null)
{
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
if ("left".equalsIgnoreCase(value.getStringValue()))
{
return LEFT;
}
else if ("center".equalsIgnoreCase(value.getStringValue()))
{
return CENTER;
}
else if ("right".equalsIgnoreCase(value.getStringValue()))
{
return RIGHT;
}
else if ("top".equalsIgnoreCase(value.getStringValue()))
{
return TOP;
}
else if ("bottom".equalsIgnoreCase(value.getStringValue()))
{
return BOTTOM;
}
// ignore this rule.
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE)
{
return CSSNumericValue.createValue(CSSNumericType.PERCENTAGE,
value.getFloatValue());
}
if (CSSValueFactory.isLengthValue(value))
{
return CSSValueFactory.createLengthValue(value);
}
// contains errors, we ignore this rule.
return null;
}
protected CSSValuePair createResultList(final CSSValue firstPosition,
final CSSValue secondPosition)
{
if (firstPosition == TOP || firstPosition == BOTTOM)
{
return new CSSValuePair(secondPosition, firstPosition);
}
else if (secondPosition == LEFT || secondPosition == RIGHT)
{
return new CSSValuePair(secondPosition, firstPosition);
}
else
{
return new CSSValuePair(firstPosition, secondPosition);
}
}
protected CSSValue parseSecondPosition(final LexicalUnit value,
final CSSValue firstValue)
{
if (value == null)
{
return CENTER;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT)
{
if ("left".equalsIgnoreCase(value.getStringValue()))
{
return LEFT;
}
else if ("center".equalsIgnoreCase(value.getStringValue()))
{
return CENTER;
}
else if ("right".equalsIgnoreCase(value.getStringValue()))
{
return RIGHT;
}
else if ("top".equalsIgnoreCase(value.getStringValue()))
{
return TOP;
}
else if ("bottom".equalsIgnoreCase(value.getStringValue()))
{
return BOTTOM;
}
return null; // ignore this rule, it contains errors.
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE)
{
return CSSNumericValue.createValue(CSSNumericType.PERCENTAGE,
value.getFloatValue());
}
else if (CSSValueFactory.isLengthValue(value))
{
return CSSValueFactory.createLengthValue(value);
}
return CENTER;
}
}