// $Id$
// Author: Yves Lafon <ylafon@w3.org>
//
// (c) COPYRIGHT MIT, ERCIM and Keio University, 2012.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.css1;

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/2008/REC-CSS1-20080411/#font-style
 */
public class CssFontStyle extends org.w3c.css.properties.css.CssFontStyle {

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

    static {
        allowed_values = new ArrayList<CssIdent>(3);
        for (String s : _allowed_values) {
            allowed_values.add(CssIdent.getIdent(s));
        }
    }

    /**
     * Create a new CssFontStyle
     */
    public CssFontStyle() {
    }

    /**
     * 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;
            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);
    }

}