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<?php
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namespace Sabberworm\CSS\Property;
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use Sabberworm\CSS\Comment\Comment;
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use Sabberworm\CSS\OutputFormat;
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use Sabberworm\CSS\Value\URL;
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/**
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 * Class representing an `@import` rule.
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 */
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class Import implements AtRule
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{
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    /**
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     * @var URL
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     */
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    private $oLocation;
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    /**
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     * @var string
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     */
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    private $sMediaQuery;
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    /**
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     * @var int
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     */
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    protected $iLineNo;
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    /**
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     * @var array<array-key, Comment>
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     */
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    protected $aComments;
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    /**
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     * @param URL $oLocation
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     * @param string $sMediaQuery
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     * @param int $iLineNo
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     */
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    public function __construct(URL $oLocation, $sMediaQuery, $iLineNo = 0)
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    {
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        $this->oLocation = $oLocation;
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        $this->sMediaQuery = $sMediaQuery;
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        $this->iLineNo = $iLineNo;
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        $this->aComments = [];
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    }
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    /**
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     * @return int
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     */
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    public function getLineNo()
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    {
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        return $this->iLineNo;
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    }
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    /**
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     * @param URL $oLocation
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     *
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     * @return void
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     */
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    public function setLocation($oLocation)
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    {
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        $this->oLocation = $oLocation;
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    }
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    /**
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     * @return URL
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     */
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    public function getLocation()
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    {
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        return $this->oLocation;
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    }
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    /**
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     * @return string
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     */
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    public function __toString()
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    {
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        return $this->render(new OutputFormat());
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    }
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    /**
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     * @param OutputFormat|null $oOutputFormat
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     *
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     * @return string
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     */
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    public function render($oOutputFormat)
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    {
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        return $oOutputFormat->comments($this) . "@import " . $this->oLocation->render($oOutputFormat)
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            . ($this->sMediaQuery === null ? '' : ' ' . $this->sMediaQuery) . ';';
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    }
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    /**
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     * @return string
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     */
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    public function atRuleName()
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    {
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        return 'import';
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    }
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    /**
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     * @return array<int, URL|string>
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     */
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    public function atRuleArgs()
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    {
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        $aResult = [$this->oLocation];
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        if ($this->sMediaQuery) {
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            array_push($aResult, $this->sMediaQuery);
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        }
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        return $aResult;
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    }
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    /**
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     * @param array<array-key, Comment> $aComments
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     *
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     * @return void
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     */
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    public function addComments(array $aComments)
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    {
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        $this->aComments = array_merge($this->aComments, $aComments);
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    }
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    /**
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     * @return array<array-key, Comment>
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     */
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    public function getComments()
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    {
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        return $this->aComments;
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    }
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    /**
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     * @param array<array-key, Comment> $aComments
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     *
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     * @return void
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     */
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    public function setComments(array $aComments)
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    {
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        $this->aComments = $aComments;
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    }
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    /**
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     * @return string
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     */
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    public function getMediaQuery()
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    {
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        return $this->sMediaQuery;
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    }
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}