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<?php namespace Yoast\WP\SEO\Generators; use Error; use Yoast\WP\SEO\Context\Meta_Tags_Context; use Yoast\WP\SEO\Helpers\Image_Helper; use Yoast\WP\SEO\Helpers\Open_Graph\Image_Helper as Open_Graph_Image_Helper; use Yoast\WP\SEO\Helpers\Options_Helper; use Yoast\WP\SEO\Helpers\Url_Helper; use Yoast\WP\SEO\Models\Indexable; use Yoast\WP\SEO\Values\Open_Graph\Images; /** * Represents the generator class for the Open Graph images. */ class Open_Graph_Image_Generator implements Generator_Interface { /** * The Open Graph image helper. * * @var Open_Graph_Image_Helper */ protected $open_graph_image; /** * The image helper. * * @var Image_Helper */ protected $image; /** * The URL helper. * * @var Url_Helper */ protected $url; /** * The options helper. * * @var Options_Helper */ private $options; /** * Images constructor. * * @codeCoverageIgnore * * @param Open_Graph_Image_Helper $open_graph_image Image helper for Open Graph. * @param Image_Helper $image The image helper. * @param Options_Helper $options The options helper. * @param Url_Helper $url The url helper. */ public function __construct( Open_Graph_Image_Helper $open_graph_image, Image_Helper $image, Options_Helper $options, Url_Helper $url ) { $this->open_graph_image = $open_graph_image; $this->image = $image; $this->options = $options; $this->url = $url; } /** * Retrieves the images for an indexable. * * For legacy reasons some plugins might expect we filter a WPSEO_Opengraph_Image object. That might cause * type errors. This is why we try/catch our filters. * * @param Meta_Tags_Context $context The context. * * @return array The images. */ public function generate( Meta_Tags_Context $context ) { $image_container = $this->get_image_container(); $backup_image_container = $this->get_image_container(); try { /** * Filter: wpseo_add_opengraph_images - Allow developers to add images to the Open Graph tags. * * @param Yoast\WP\SEO\Values\Open_Graph\Images $image_container The current object. */ \apply_filters( 'wpseo_add_opengraph_images', $image_container ); } catch ( Error $error ) { $image_container = $backup_image_container; } $this->add_from_indexable( $context->indexable, $image_container ); $backup_image_container = $image_container; try { /** * Filter: wpseo_add_opengraph_additional_images - Allows to add additional images to the Open Graph tags. * * @param Yoast\WP\SEO\Values\Open_Graph\Images $image_container The current object. */ \apply_filters( 'wpseo_add_opengraph_additional_images', $image_container ); } catch ( Error $error ) { $image_container = $backup_image_container; } $this->add_from_templates( $context, $image_container ); $this->add_from_default( $image_container ); return $image_container->get_images(); } /** * Retrieves the images for an author archive indexable. * * This is a custom method to address the case of Author Archives, since they always have an Open Graph image * set in the indexable (even if it is an empty default Gravatar). * * @param Meta_Tags_Context $context The context. * * @return array The images. */ public function generate_for_author_archive( Meta_Tags_Context $context ) { $image_container = $this->get_image_container(); $this->add_from_templates( $context, $image_container ); if ( $image_container->has_images() ) { return $image_container->get_images(); } return $this->generate( $context ); } /** * Adds an image based on the given indexable. * * @param Indexable $indexable The indexable. * @param Images $image_container The image container. * * @return void */ protected function add_from_indexable( Indexable $indexable, Images $image_container ) { if ( $indexable->open_graph_image_meta ) { $image_container->add_image_by_meta( $indexable->open_graph_image_meta ); return; } if ( $indexable->open_graph_image_id ) { $image_container->add_image_by_id( $indexable->open_graph_image_id ); return; } if ( $indexable->open_graph_image ) { $meta_data = []; if ( $indexable->open_graph_image_meta && \is_string( $indexable->open_graph_image_meta ) ) { $meta_data = \json_decode( $indexable->open_graph_image_meta, true ); } $image_container->add_image( \array_merge( (array) $meta_data, [ 'url' => $indexable->open_graph_image, ] ) ); } } /** * Retrieves the default Open Graph image. * * @param Images $image_container The image container. * * @return void */ protected function add_from_default( Images $image_container ) { if ( $image_container->has_images() ) { return; } $default_image_id = $this->options->get( 'og_default_image_id', '' ); if ( $default_image_id ) { $image_container->add_image_by_id( $default_image_id ); return; } $default_image_url = $this->options->get( 'og_default_image', '' ); if ( $default_image_url ) { $image_container->add_image_by_url( $default_image_url ); } } /** * Retrieves the default Open Graph image. * * @param Meta_Tags_Context $context The context. * @param Images $image_container The image container. * * @return void */ protected function add_from_templates( Meta_Tags_Context $context, Images $image_container ) { if ( $image_container->has_images() ) { return; } if ( $context->presentation->open_graph_image_id ) { $image_container->add_image_by_id( $context->presentation->open_graph_image_id ); return; } if ( $context->presentation->open_graph_image ) { $image_container->add_image_by_url( $context->presentation->open_graph_image ); } } /** * Retrieves an instance of the image container. * * @codeCoverageIgnore * * @return Images The image container. */ protected function get_image_container() { $image_container = new Images( $this->image, $this->url ); $image_container->set_helpers( $this->open_graph_image ); return $image_container; } }
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