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

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cssvalidator Show documentation
Backend for the W3C CSS Validation Service
There is a newer version: 1.0.8
// $Id$
// Author: Yves Lafon 
//
// (c) COPYRIGHT MIT, ERCIM, Keio University, Beihang University 2013.
// 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.CssCheckableValue;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssIdent;
import org.w3c.css.values.CssNumber;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;

/**
 * @spec https://www.w3.org/TR/2018/CR-css-break-3-20181204/#propdef-break-inside
 */
public class CssOrphans extends org.w3c.css.properties.css.CssOrphans {

    public static final CssNumber def = new CssNumber(2);

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

    /**
     * Create a new CssOrphans
     *
     * @param ac         The context
     * @param expression The expression for this property
     * @param check      true will test the number of parameters
     * @throws org.w3c.css.util.InvalidParamException
     *          The expression is incorrect
     */
    public CssOrphans(ApplContext ac, CssExpression expression, boolean check)
            throws InvalidParamException {

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

        CssValue val = expression.getValue();

        setByUser();
        switch (val.getType()) {
            case CssTypes.CSS_NUMBER:
                CssCheckableValue number = val.getCheckableValue();
                number.checkInteger(ac, this);
                number.checkStrictPositiveness(ac, this);
                value = val;
                break;
            case CssTypes.CSS_IDENT:
                CssIdent ide = (CssIdent) val;
                if (inherit.equals(ide)) {
                    value = inherit;
                    break;
                }
            default:
                throw new InvalidParamException("value", expression.getValue(),
                        getPropertyName(), ac);
        }
        expression.next();
    }

    /**
     * Create a new CssOrphans
     *
     * @param ac,        the Context
     * @param expression The expression for this property
     * @throws org.w3c.css.util.InvalidParamException
     *          The expression is incorrect
     */
    public CssOrphans(ApplContext ac, CssExpression expression)
            throws InvalidParamException {
        this(ac, expression, false);
    }

    public boolean isDefault() {
        return (initial == value) || def.equals(value);
    }
}