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<?php
namespace Yoast\WP\SEO\Presenters;
use WPSEO_Replace_Vars;
use Yoast\WP\SEO\Presentations\Indexable_Presentation;
use Yoast\WP\SEO\Surfaces\Helpers_Surface;
/**
* Abstract presenter class for indexable presentations.
*/
abstract class Abstract_Indexable_Presenter extends Abstract_Presenter {
/**
* The WPSEO Replace Vars object.
*
* @var WPSEO_Replace_Vars
*/
public $replace_vars;
/**
* The indexable presentation.
*
* @var Indexable_Presentation
*/
public $presentation;
/**
* The helpers surface
*
* @var Helpers_Surface
*/
public $helpers;
/**
* The tag key name.
*
* @var string
*/
protected $key = 'NO KEY PROVIDED';
/**
* Gets the raw value of a presentation.
*
* @return string|array The raw value.
*/
abstract public function get();
/**
* Transforms an indexable presenter's key to a json safe key string.
*
* @return string|null
*/
public function escape_key() {
if ( $this->key === 'NO KEY PROVIDED' ) {
return null;
}
return \str_replace( [ ':', ' ', '-' ], '_', $this->key );
}
/**
* Returns the metafield's property key.
*
* @return string The property key.
*/
public function get_key() {
return $this->key;
}
/**
* Replace replacement variables in a string.
*
* @param string $replacevar_string The string with replacement variables.
*
* @return string The string with replacement variables replaced.
*/
protected function replace_vars( $replacevar_string ) {
return $this->replace_vars->replace( $replacevar_string, $this->presentation->source );
}
}