w3c.css.properties.svg.CssBaselineShift 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
// Author: Yves Lafon 
//
// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang, 2015.
// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.css.properties.svg;

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 http://www.w3.org/TR/2011/REC-SVG11-20110816/text.html#BaselineShiftProperty
 */

public class CssBaselineShift extends org.w3c.css.properties.css.CssBaselineShift {

    public static final CssIdent[] allowed_values;

    // NOTE: this is the same as CSS3 apart from the fact that
    // 'baseline' is here to avoid using 'initial' to reset it (but 0 would do as well)
    static {
        String[] _allowed_values = {"baseline", "sub", "super"};
        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;
    }

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

        CssValue val;

        val = expression.getValue();

        switch (val.getType()) {
            case CssTypes.CSS_NUMBER:
                // zero is a valid length. otherwise it will fail.
                val.getLength();
            case CssTypes.CSS_LENGTH:
            case CssTypes.CSS_PERCENTAGE:
                value = val;
                break;
            case CssTypes.CSS_IDENT:
                CssIdent id = (CssIdent) val;
                if (inherit.equals(id)) {
                    value = inherit;
                    break;
                }
                value = getAllowedIdent(id);
                if (value != null) {
                    break;
                }
                // unrecognized ident -> fail.
            default:
                throw new InvalidParamException("value",
                        val.toString(),
                        getPropertyName(), ac);
        }

    }


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


}