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/**
* ===========================================
* 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: MarginReadHandler.java 2739 2007-04-02 11:41:22Z taqua $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.input.style.parser.stylehandler.box;
import java.util.HashMap;
import java.util.Map;
import org.jfree.layouting.input.style.StyleKey;
import org.jfree.layouting.input.style.keys.box.BoxStyleKeys;
import org.jfree.layouting.input.style.parser.CSSCompoundValueReadHandler;
import org.jfree.layouting.input.style.parser.stylehandler.AbstractWidthReadHandler;
import org.jfree.layouting.input.style.values.CSSValue;
import org.w3c.css.sac.LexicalUnit;
/**
* Creation-Date: 27.11.2005, 19:07:11
*
* @author Thomas Morgner
*/
public class MarginReadHandler extends AbstractWidthReadHandler
implements CSSCompoundValueReadHandler
{
public MarginReadHandler()
{
super (true, true);
}
/**
* Parses the LexicalUnit and returns a map of (StyleKey, CSSValue) pairs.
*
* @param unit
* @return
*/
public Map createValues(LexicalUnit unit)
{
final CSSValue topWidth = parseWidth(unit);
if (topWidth == null)
{
return null;
}
unit = unit.getNextLexicalUnit();
final CSSValue rightWidth;
if (unit == null)
{
rightWidth = topWidth;
}
else
{
rightWidth = parseWidth(unit);
if (rightWidth == null)
{
return null;
}
unit = unit.getNextLexicalUnit();
}
final CSSValue bottomWidth;
if (unit == null)
{
bottomWidth = topWidth;
}
else
{
bottomWidth = parseWidth(unit);
if (bottomWidth == null)
{
return null;
}
unit = unit.getNextLexicalUnit();
}
final CSSValue leftWidth;
if (unit == null)
{
leftWidth = rightWidth;
}
else
{
leftWidth = parseWidth(unit);
if (leftWidth == null)
{
return null;
}
}
final Map map = new HashMap();
map.put(BoxStyleKeys.MARGIN_TOP, topWidth);
map.put(BoxStyleKeys.MARGIN_RIGHT, rightWidth);
map.put(BoxStyleKeys.MARGIN_BOTTOM, bottomWidth);
map.put(BoxStyleKeys.MARGIN_LEFT, leftWidth);
return map;
}
public StyleKey[] getAffectedKeys()
{
return new StyleKey[]{
BoxStyleKeys.MARGIN_TOP,
BoxStyleKeys.MARGIN_RIGHT,
BoxStyleKeys.MARGIN_BOTTOM,
BoxStyleKeys.MARGIN_LEFT
};
}
}
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