MobileFormatter.php
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MobileFormatter.php
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	<?php

	use HtmlFormatter\HtmlFormatter;
	use MobileFrontend\Transforms\IMobileTransform;
	use Wikimedia\Parsoid\Utils\DOMCompat;

	/**
	* Converts HTML into a mobile-friendly version
	*/
	class MobileFormatter extends HtmlFormatter {

	/**
	* @inheritDoc
	*/
	public function __construct( $html ) {
	// This is specific to HtmlFormatter, decouple it from callers.
	parent::__construct( self::wrapHTML( $html ) );
	}

	/**
	* Performs various transformations to the content to make it appropriate for mobile devices.
	* @param array<IMobileTransform> $transforms lit of transforms to be sequentually applied
	* to html DOM
	*/
	public function applyTransforms( array $transforms ) {
	$doc = $this->getDoc();
	$body = DOMCompat::querySelector( $doc, 'body' );

	foreach ( $transforms as $transform ) {
	$transform->apply( $body );
	}
	}

	/**
	* Check whether the MobileFormatter can be applied to the text of a page.
	* @param string $text
	* @param array $options with 'maxHeadings' and 'maxImages' keys that limit the MobileFormatter
	* to pages with less than or equal to that number of headings and images.
	* @return bool
	*/
	public static function canApply( $text, $options ) {
	$headings = preg_match_all( '/<[hH][1-6]/', $text );
	$imgs = preg_match_all( '/<img/', $text );
	return $headings <= $options['maxHeadings'] && $imgs <= $options['maxImages'];
	}
	}