w3c.css.properties.css3.CssFontStyle Maven / Gradle / Ivy

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Backend for the W3C CSS Validation Service

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// $Id$
// Author: Yves Lafon 
//
// (c) COPYRIGHT MIT, ERCIM and Keio University, 2012.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.css3;

import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssIdent;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;

import java.util.ArrayList;

/**
 * @spec http://www.w3.org/TR/2011/WD-css3-fonts-20111004/#font-style-prop
 */
public class CssFontStyle extends org.w3c.css.properties.css.CssFontStyle {

    static final String[] _allowed_values = {"italic", "normal", "oblique"};
    static final ArrayList allowed_values;

    static {
        allowed_values = new ArrayList(_allowed_values.length);
        for (String s : _allowed_values) {
            allowed_values.add(CssIdent.getIdent(s));
        }
    }

    /**
     * Create a new CssFontStyle
     */
    public CssFontStyle() {
        value = initial;
    }

    /**
     * Creates a new CssFontStyle
     *
     * @param expression The expression for this property
     * @throws org.w3c.css.util.InvalidParamException
     *          Expressions are incorrect
     */
    public CssFontStyle(ApplContext ac, CssExpression expression, boolean check)
            throws InvalidParamException {
        if (check && expression.getCount() > 1) {
            throw new InvalidParamException("unrecognize", ac);
        }
        setByUser();

        CssValue val;
        char op;

        val = expression.getValue();
        op = expression.getOperator();

        if (val.getType() == CssTypes.CSS_IDENT) {
            CssIdent ident = (CssIdent) val;
            if (inherit.equals(ident)) {
                value = inherit;
            } else {
                int pos = allowed_values.indexOf(ident);
                if (pos < 0) {
                    throw new InvalidParamException("value",
                            val.toString(),
                            getPropertyName(), ac);
                }
                value = allowed_values.get(pos);
            }
        } else {
            throw new InvalidParamException("value",
                    val.toString(),
                    getPropertyName(), ac);
        }
        expression.next();
    }

    public CssFontStyle(ApplContext ac, CssExpression expression)
            throws InvalidParamException {
        this(ac, expression, false);
    }

}