| 1 |
<?php |
| 2 |
|
| 3 |
namespace Yoast\WP\SEO\Generators\Schema; |
| 4 |
|
| 5 |
use Yoast\WP\SEO\Config\Schema_IDs; |
| 6 |
|
| 7 |
/** |
| 8 |
* Returns ImageObject schema data. |
| 9 |
*/ |
| 10 |
class Main_Image extends Abstract_Schema_Piece { |
| 11 |
|
| 12 |
/** |
| 13 |
* Determines whether or not a piece should be added to the graph. |
| 14 |
* |
| 15 |
* @return bool |
| 16 |
*/ |
| 17 |
public function is_needed() { |
| 18 |
return $this->context->indexable->object_type === 'post'; |
| 19 |
} |
| 20 |
|
| 21 |
/** |
| 22 |
* Adds a main image for the current URL to the schema if there is one. |
| 23 |
* |
| 24 |
* This can be either a social image (Open Graph or Twitter), the featured image, |
| 25 |
* or fall back to the first image in the content of the page. |
| 26 |
* |
| 27 |
* @return false|array Image Schema. |
| 28 |
*/ |
| 29 |
public function generate() { |
| 30 |
$image_id = $this->context->canonical . Schema_IDs::PRIMARY_IMAGE_HASH; |
| 31 |
|
| 32 |
// The Open Graph image. |
| 33 |
if ( isset( $this->context->indexable->open_graph_image_id ) && $this->context->indexable->open_graph_image_source === 'set-by-user' ) { |
| 34 |
return $this->helpers->schema->image->generate_from_attachment_id( $image_id, $this->context->indexable->open_graph_image_id ); |
| 35 |
} |
| 36 |
|
| 37 |
// The Twitter image. |
| 38 |
if ( isset( $this->context->indexable->twitter_image_id ) && $this->context->indexable->twitter_image_source === 'set-by-user' ) { |
| 39 |
return $this->helpers->schema->image->generate_from_attachment_id( $image_id, $this->context->indexable->twitter_image_id ); |
| 40 |
} |
| 41 |
|
| 42 |
// The featured image. |
| 43 |
if ( $this->context->main_image_id ) { |
| 44 |
return $this->helpers->schema->image->generate_from_attachment_id( $image_id, $this->context->main_image_id ); |
| 45 |
} |
| 46 |
|
| 47 |
// The first image in the content. |
| 48 |
if ( $this->context->main_image_url ) { |
| 49 |
return $this->helpers->schema->image->generate_from_url( $image_id, $this->context->main_image_url ); |
| 50 |
} |
| 51 |
|
| 52 |
return false; |
| 53 |
} |
| 54 |
} |
| 55 |
|
