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<?php

namespace Sabberworm\CSS\Property;

/**
* CSSNamespace represents an @namespace rule.
*/
class CSSNamespace implements AtRule {
    private $mUrl;
    private $sPrefix;

    public function __construct($mUrl, $sPrefix = null) {
        $this->mUrl = $mUrl;
        $this->sPrefix = $sPrefix;
    }

    public function __toString() {
        return '@namespace '.($this->sPrefix === null ? '' : $this->sPrefix.' ').$this->mUrl->__toString().';';
    }

    public function getUrl() {
        return $this->mUrl;
    }

    public function getPrefix() {
        return $this->sPrefix;
    }

    public function setUrl($mUrl) {
        $this->mUrl = $mUrl;
    }

    public function setPrefix($sPrefix) {
        $this->sPrefix = $sPrefix;
    }

    public function atRuleName() {
        return 'namespace';
    }

    public function atRuleArgs() {
        $aResult = array($this->mUrl);
        if($this->sPrefix) {
            array_unshift($aResult, $this->sPrefix);
        }
        return $aResult;
    }
}