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//
// $Id: AtRuleMediaCSS1.java,v 1.6 2010-01-05 13:49:33 ylafon Exp $
// From Philippe Le Hegaret ([email protected])
//
// (c) COPYRIGHT MIT and INRIA, 1997.
// Please first read the full copyright statement in file COPYRIGHT.html
/*
 * AtRuleMedia.java
 * $Id: AtRuleMediaCSS1.java,v 1.6 2010-01-05 13:49:33 ylafon Exp $
 */
package org.w3c.css.parser;

import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;

import java.util.Enumeration;

/**
 * This class manages all media defines by CSS2
 *
 * @author Philippe Le Hegaret
 * @version $Revision: 1.6 $
 */
public class AtRuleMediaCSS1 extends AtRuleMedia {

    static final String[] mediaCSS1 = {
            "all"
    };

    String[] media = new String[mediaCSS1.length];

    boolean empty = true;

    /**
     * Creates a new AtRuleMediaCSS1
     */
    public AtRuleMediaCSS1() {
        media[0] = mediaCSS1[0];
    }


    /**
     * Adds a medium.
     *
     * @throws InvalidParamException the medium doesn't exist
     */
    public AtRuleMedia addMedia(String medium,
                                ApplContext ac) throws InvalidParamException {

        // do nothing
        return this;
    }

    /**
     * Returns the at rule keyword
     */
    public String keyword() {
        return "media";
    }

    public boolean isEmpty() {
        return false;
    }

    /**
     * The second must be exactly the same of this one
     */
    public boolean canApply(AtRule atRule) {
        if (atRule instanceof AtRuleMedia) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * The second must only match this one
     */
    public boolean canMatched(AtRule atRule) {
        if (atRule instanceof AtRuleMedia) {
            return true;
        } else {
            return false;
        }
    }

    public Enumeration elements() {
        return new MediaEnumeration(this);
    }

    /**
     * Returns a string representation of the object.
     */
    public String toString() {
        return "@" + keyword() + " all ";
    }


}