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<?php |
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/** |
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* Class used to add custom classes to gallery links |
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* Date: 04/06/2017 |
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*/ |
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if ( ! class_exists( 'FooGallery_Attachment_Custom_Class' ) ) { |
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class FooGallery_Attachment_Custom_Class { |
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function __construct() { |
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add_filter( 'foogallery_attachment_custom_fields', array( $this, 'add_custom_class_field' ) ); |
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add_filter( 'foogallery_attachment_html_link_attributes', array( $this, 'alter_class_attributes' ), 99, 3 ); |
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} |
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/** |
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* Adds a custom class field to the attachments |
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* |
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* @param $fields array |
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* |
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* @return array |
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*/ |
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function add_custom_class_field( $fields ) { |
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$fields['foogallery_custom_class'] = array( |
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'label' => __( 'Custom Class', 'foogallery' ), |
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'input' => 'text', |
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'helps' => __( 'Add extra classes to the attachment', 'foogallery' ), |
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'exclusions' => array( 'audio', 'video' ), |
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); |
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return $fields; |
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} |
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/** |
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* Alters the actual link output to include the custom class added |
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* |
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* @uses "foogallery_attachment_html_link_attributes" filter |
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* |
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* @param $attr |
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* @param $args |
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* @param object|FooGalleryAttachment $object |
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* |
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* @return array |
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*/ |
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function alter_class_attributes( $attr, $args, $object ) { |
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$custom_class = get_post_meta( $object->ID, '_foogallery_custom_class', true ); |
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if ( ! isset( $attr[ 'class' ] ) ) { |
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$attr[ 'class' ] = $custom_class; |
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}else{ |
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$attr[ 'class' ] .= ' ' . $custom_class; |
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} |
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//check for any special class names and do some magic! |
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if ( 'nolink' === $custom_class ) { |
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unset( $attr['href'] ); |
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} |
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return $attr; |
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} |
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} |
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} |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.