//
// Author: Yves Lafon <ylafon@w3.org>
//
// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang 2015.
// 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;

/**
 * @spec https://www.w3.org/TR/2020/WD-css-inline-3-20200827/#propdef-initial-letter-wrap
 */
public class CssInitialLetterWrap extends org.w3c.css.properties.css.CssInitialLetterWrap {

    public static final CssIdent[] allowed_values;

    static {
        String[] _allowed_values = {"none", "first", "all", "grid"};
        int i = 0;
        allowed_values = new CssIdent[_allowed_values.length];
        for (String s : _allowed_values) {
            allowed_values[i++] = CssIdent.getIdent(s);
        }
    }

    public static final CssIdent getAllowedIdent(CssIdent ident) {
        for (CssIdent id : allowed_values) {
            if (id.equals(ident)) {
                return id;
            }
        }
        return null;
    }

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

    /**
     * Set the value of the property
     *
     * @param expression The expression for this property
     * @param check      set it to true to check the number of values
     * @throws org.w3c.css.util.InvalidParamException The expression is incorrect
     */
    public CssInitialLetterWrap(ApplContext ac, CssExpression expression,
                                boolean check) throws InvalidParamException {

        if (check && expression.getCount() > 1) {
            throw new InvalidParamException("unrecognize", ac);
        }

        setByUser();
        CssValue val = expression.getValue();

        switch (val.getType()) {
            case CssTypes.CSS_NUMBER:
                // check that the number is a length (ie: 0)
                val.getCheckableValue().checkEqualsZero(ac, this);
            case CssTypes.CSS_LENGTH:
            case CssTypes.CSS_PERCENTAGE:
                value = val;
                break;
            case CssTypes.CSS_IDENT:
                CssIdent id = val.getIdent();
                if (CssIdent.isCssWide(id)) {
                    value = val;
                    break;
                }
                if (getAllowedIdent(id) != null) {
                    value = val;
                    break;
                }
            default:
                throw new InvalidParamException("value", val,
                        getPropertyName(), ac);
        }
        expression.next();
    }

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


}