/*******************************************************************************
* Copyright (c) 2004, 2008 John Krasnay and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* John Krasnay - initial API and implementation
*******************************************************************************/
package net.sf.vex.css;
import org.w3c.css.sac.LexicalUnit;
/**
* The CSS text-align property.
*/
public class TextAlignProperty extends AbstractProperty {
/**
* Class constructor
*/
public TextAlignProperty() {
super(CSS.TEXT_ALIGN);
}
public Object calculate(LexicalUnit lu, Styles parentStyles, Styles styles) {
if (TextAlignProperty.isTextAlign(lu)) {
return lu.getStringValue();
} else {
// not specified, "inherit", or some other value
if (parentStyles != null) {
return parentStyles.getTextAlign();
} else {
return CSS.LEFT;
}
}
}
//=================================================== PRIVATE
private static boolean isTextAlign(LexicalUnit lu) {
if (lu == null) {
return false;
} else if (lu.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
return true;
} else {
return false;
}
}
}