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<?php |
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namespace GeminiLabs\Castor; |
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use GeminiLabs\Castor\Helpers\PostMeta; |
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use GeminiLabs\Castor\Helpers\Theme; |
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use GeminiLabs\Castor\Helpers\Utility; |
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use WP_Post; |
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use WP_Query; |
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class Gallery |
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{ |
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public $gallery; |
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protected $args; |
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protected $image; |
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protected $postmeta; |
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protected $theme; |
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protected $utility; |
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public function __construct(Image $image, PostMeta $postmeta, Theme $theme, Utility $utility) |
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{ |
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$this->image = $image; |
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$this->postmeta = $postmeta; |
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$this->theme = $theme; |
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$this->utility = $utility; |
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} |
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/** |
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* @return static |
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*/ |
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public function get(array $args = []) |
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{ |
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$this->normalizeArgs($args); |
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$this->gallery = new WP_Query([ |
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'orderby' => 'post__in', |
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'paged' => $this->getPaged(), |
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'post__in' => $this->args['media'], |
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'post_mime_type' => 'image', |
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'post_type' => 'attachment', |
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'post_status' => 'inherit', |
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'posts_per_page' => $this->args['images_per_page'], |
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]); |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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public function render() |
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{ |
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if (empty($this->args['media'])) { |
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return; |
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} |
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$images = array_reduce($this->gallery->posts, function ($images, $attachment) { |
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return $images.$this->renderImage($attachment); |
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}); |
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return sprintf('<div class="gallery-images" itemscope itemtype="http://schema.org/ImageGallery">%s</div>%s', |
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$images, |
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$this->renderPagination() |
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); |
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} |
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/** |
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* @return string|null |
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*/ |
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public function renderImage(WP_Post $attachment) |
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{ |
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$image = $this->image->get($attachment->ID)->image; |
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if (!$image) { |
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return; |
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} |
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return sprintf( |
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'<figure class="gallery-image" data-w="%s" data-h="%s" data-ps=\'%s\' itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">'. |
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'%s%s'. |
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'</figure>', |
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$image->thumbnail['width'], |
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$image->thumbnail['height'], |
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$this->getPhotoswipeData($image), |
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$this->renderImageTag($image), |
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$this->renderImageCaption($image) |
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); |
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} |
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/** |
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* @return string|null |
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*/ |
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public function renderPagination() |
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{ |
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if (!$this->args['pagination']) { |
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return; |
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} |
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return paginate_links([ |
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'before_page_number' => '<span class="screen-reader-text">'.__('Page', 'castor').' </span>', |
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'current' => $this->gallery->query['paged'], |
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'mid_size' => 1, |
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'next_text' => __('Next', 'castor'), |
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'prev_text' => __('Previous', 'castor'), |
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'total' => $this->gallery->max_num_pages, |
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]); |
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} |
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/** |
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* @param string $key |
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* @param mixed $value |
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* |
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* @return bool |
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*/ |
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protected function getBoolValue($key, $value = null) |
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{ |
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$bool = $this->getValue($key, $value); |
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if (is_null(filter_var($bool, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE))) { |
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$bool = $this->postmeta->get($bool); |
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} |
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return wp_validate_boolean($bool); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return int |
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*/ |
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protected function getGalleryArg($value = null) |
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{ |
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$gallery = $this->getValue('gallery', $value); |
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if (!is_numeric($gallery) && is_string($gallery)) { |
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$gallery = intval($this->postmeta->get($gallery)); |
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} |
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return !is_null(get_post($gallery)) |
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? intval($gallery) |
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: 0; |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return int |
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*/ |
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protected function getImagesPerPageArg($value = null) |
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{ |
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$perPage = $this->getValue('images_per_page', $value); |
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if (!is_numeric($perPage) && is_string($perPage)) { |
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$perPage = $this->postmeta->get($perPage); |
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} |
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return (bool) intval($perPage) |
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? $perPage |
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: -1; |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return bool |
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*/ |
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protected function getLazyloadArg($value = null) |
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{ |
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return $this->getBoolValue('lazyload', $value); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return array |
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*/ |
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protected function getMediaArg($value = null) |
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{ |
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$media = $this->getValue('media', $value); |
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if (is_string($media)) { |
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$media = $this->postmeta->get($media, [ |
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'ID' => $this->getGalleryArg(), |
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'single' => false, |
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]); |
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} |
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return is_array($media) |
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? wp_parse_id_list($media) |
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: []; |
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} |
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/** |
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* @return int |
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*/ |
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protected function getPaged() |
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{ |
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return intval(get_query_var((is_front_page() ? 'page' : 'paged'))) ?: 1; |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return bool |
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*/ |
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protected function getPaginationArg($value = null) |
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{ |
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return $this->getBoolValue('pagination', $value); |
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} |
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/** |
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* @param mixed $value |
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* |
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* @return bool |
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*/ |
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protected function getPermalinksArg($value = null) |
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{ |
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return $this->getBoolValue('permalinks', $value); |
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} |
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/** |
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* @return string |
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*/ |
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protected function getPhotoswipeData($image) |
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{ |
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return sprintf('{"l":{"src":"%s","w":%d,"h":%d},"m":{"src":"%s","w":%d,"h":%d}}', |
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$image->large['url'], |
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$image->large['width'], |
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$image->large['height'], |
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$image->medium['url'], |
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$image->medium['width'], |
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$image->medium['height'] |
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); |
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} |
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/** |
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* @param string $key |
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* @param mixed $value |
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* |
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* @return mixed |
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*/ |
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protected function getValue($key, $value = null) |
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{ |
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if (is_null($value) && isset($this->args[$key])) { |
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$value = $this->args[$key]; |
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} |
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return $value; |
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} |
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/** |
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* @return array |
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*/ |
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protected function normalizeArgs(array $args = []) |
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{ |
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$defaults = [ |
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'gallery', // (string) meta_key | (int) post_id |
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'lazyload', // (string) meta_key | (bool) |
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'media', // (string) meta_key | (array) post_ids |
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'pagination', // (string) meta_key | (bool) |
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'images_per_page', // (string) meta_key | (int) number |
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'permalinks', // (string) meta_key | (bool) |
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]; |
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$this->args = shortcode_atts(array_combine($defaults, $defaults), $args); |
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array_walk($this->args, function (&$value, $key) { |
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$method = $this->utility->buildMethodName($key.'_arg'); |
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if (method_exists($this, $method)) { |
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$value = call_user_func([$this, $method], $value); |
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} |
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}); |
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return $this->args; |
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} |
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/** |
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* @param object $image |
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* @return string|null |
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*/ |
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protected function renderImageCaption($image) |
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{ |
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if (!empty($image->copyright)) { |
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$image->caption .= sprintf(' <span itemprop="copyrightHolder">%s</span>', $image->copyright); |
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} |
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if (empty($image->caption)) { |
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return; |
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} |
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return sprintf('<figcaption itemprop="caption description">%s</figcaption>', $image->caption); |
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} |
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/** |
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* @param object $image |
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* @return string|null |
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*/ |
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protected function renderImageTag($image) |
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{ |
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$imgSrc = $this->getLazyloadArg() |
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? $this->theme->imageUri('blank.gif') |
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: $image->thumbnail['url']; |
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$imgTag = sprintf('<img src="%s" data-src="%s" itemprop="thumbnail" alt="%s"/>', |
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$imgSrc, |
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$image->thumbnail['url'], |
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$image->alt |
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); |
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return $this->getPermalinksArg() |
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? sprintf('<a href="%s" itemprop="contentUrl">%s</a>', $image->permalink, $imgTag) |
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: $imgTag; |
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} |
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} |
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