w3c.css.properties.svg.CssEnableBackground 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, 2016.
// 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.CssOperator;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;
import org.w3c.css.values.CssValueList;

import java.util.ArrayList;

/**
 * @spec http://www.w3.org/TR/2011/REC-SVG11-20110816/filters.html#EnableBackgroundProperty
 */
public class CssEnableBackground extends org.w3c.css.properties.css.CssEnableBackground {

    public CssIdent id_new = CssIdent.getIdent("new");
    public CssIdent accumulate = CssIdent.getIdent("accumulate");

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

    /**
     * Creates a new CssEnableBackground
     *
     * @param expression The expression for this property
     * @throws org.w3c.css.util.InvalidParamException
     *          Expressions are incorrect
     */
    public CssEnableBackground(ApplContext ac, CssExpression expression, boolean check)
            throws InvalidParamException {
        setByUser();

        CssValue val;
        char op;
        int nbCoord = 0;
        boolean got_new = false;

        ArrayList values = new ArrayList<>();
        while (!expression.end()) {
            val = expression.getValue();
            op = expression.getOperator();

            switch (val.getType()) {
                case CssTypes.CSS_NUMBER:
                    nbCoord++;
                    if (!got_new || nbCoord > 4) {
                        throw new InvalidParamException("value",
                                val.toString(),
                                getPropertyName(), ac);
                    }
                    //     where  and  >= 0
                    if (nbCoord > 2) {
                        val.getCheckableValue().checkPositiveness(ac, this);
                    }
                    values.add(val);
                    break;
                case CssTypes.CSS_IDENT:
                    if (inherit.equals(val)) {
                        if (expression.getCount() > 1) {
                            throw new InvalidParamException("value",
                                    val.toString(),
                                    getPropertyName(), ac);
                        }
                        value = inherit;
                        break;
                    }
                    if (accumulate.equals(val)) {
                        if (expression.getCount() > 1) {
                            throw new InvalidParamException("value",
                                    val.toString(),
                                    getPropertyName(), ac);
                        }
                        value = accumulate;
                        break;
                    }
                    if (id_new.equals(val) && !got_new) {
                        values.add(id_new);
                        got_new = true;
                        break;
                    }
                default:
                    throw new InvalidParamException("value",
                            val.toString(),
                            getPropertyName(), ac);
            }
            // both space and commas can happen...
            if (op != CssOperator.SPACE && op != CssOperator.COMMA) {
                throw new InvalidParamException("operator",
                        ((new Character(op)).toString()), ac);
            }
            expression.next();
        }
        if (!values.isEmpty()) {
            value = (values.size() == 1) ? values.get(0) : new CssValueList(values);
        }
    }

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

}