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

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Backend for the W3C CSS Validation Service

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//
// Author: Yves Lafon 
//
// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang, 2017.
// 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.CssTypes;
import org.w3c.css.values.CssValue;
import org.w3c.css.values.CssValueList;

import java.util.ArrayList;

import static org.w3c.css.properties.css3.CssGridAutoRows.parseTrackSize;
import static org.w3c.css.values.CssOperator.SPACE;

/**
 * @spec https://www.w3.org/TR/2017/CR-css-grid-1-20170209/#propdef-grid-auto-columns
 */
public class CssGridAutoColumns extends org.w3c.css.properties.css.CssGridAutoColumns {

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

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

        CssValue val;
        char op;

        ArrayList values = new ArrayList<>();

        while (!expression.end()) {
            val = expression.getValue();
            op = expression.getOperator();

            if (val.getType() == CssTypes.CSS_IDENT && inherit.equals(val)) {
                if (expression.getCount() > 1) {
                    throw new InvalidParamException("unrecognize", ac);
                }
                values.add(inherit);
            } else {
                values.add(parseTrackSize(ac, val, this));
            }
            if (op != SPACE) {
                throw new InvalidParamException("operator", op,
                        getPropertyName(), ac);
            }
            expression.next();
        }
        value = (values.size() == 1) ? values.get(0) : new CssValueList(values);
    }

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

}