class-galleries.php — Responsive Lightbox & Gallery 2.7.0

responsive-lightbox / includes / class-galleries.php

responsive-lightbox / includes Last commit date

class-galleries.php

5473 lines

1	<?php
2	// exit if accessed directly
3	if ( ! defined( 'ABSPATH' ) )
4	exit;
5
6	/**
7	* Responsive Lightbox Galleries class.
8	*
9	* @class Responsive_Lightbox_Galleries
10	*/
11	class Responsive_Lightbox_Galleries {
12
13	public $fields;
14	private $tabs;
15	private $sizes;
16	private $gallery_args;
17	private $menu_item;
18	private $revision_id;
19	private $allowed_select_html = [
20	'select' => [
21	'name' => true,
22	'id' => true,
23	'class' => true,
24	'required' => true,
25	'tabindex' => true,
26	'aria-describedby' => true
27	],
28	'option' => [
29	'value' => true,
30	'class' => true,
31	'selected' => true
32	]
33	];
34
35
36	/**
37	* Class constructor.
38	*
39	* @param bool $read_only Whether is it read only mode
40	* @return void
41	*/
42	public function __construct( $read_only = false ) {
43	// set instance
44	Responsive_Lightbox()->galleries = $this;
45
46	if ( $read_only )
47	return;
48
49	// actions
50	add_action( 'init', array( $this, 'init' ), 11 );
51	add_action( 'admin_init', array( $this, 'init_admin' ) );
52	add_action( 'current_screen', array( $this, 'clear_metaboxes' ) );
53	add_action( 'edit_form_after_title', array( $this, 'after_title_nav_menu' ) );
54	add_action( 'admin_footer', array( $this, 'modal_gallery_template' ) );
55	add_action( 'customize_controls_print_footer_scripts', array( $this, 'modal_gallery_template' ) );
56	add_action( 'media_buttons', array( $this, 'add_gallery_button' ) );
57	add_action( 'add_meta_boxes_rl_gallery', array( $this, 'add_meta_boxes' ) );
58	add_action( 'save_post_rl_gallery', array( $this, 'save_post' ), 10, 3 );
59	add_action( 'manage_rl_gallery_posts_custom_column', array( $this, 'gallery_columns_content' ), 10, 2 );
60	add_action( 'admin_action_duplicate_gallery', array( $this, 'duplicate_gallery' ) );
61	add_action( 'wp_ajax_rl-get-menu-content', array( $this, 'get_menu_content' ) );
62	add_action( 'wp_ajax_rl-get-preview-content', array( $this, 'get_gallery_preview_content' ) );
63	add_action( 'wp_ajax_rl-post-get-galleries', array( $this, 'post_get_galleries' ) );
64	add_action( 'wp_ajax_rl-post-gallery-preview', array( $this, 'post_gallery_preview' ) );
65	add_action( 'wp_ajax_rl-get-gallery-page-content', array( $this, 'get_gallery_page' ) );
66	add_action( 'wp_ajax_nopriv_rl-get-gallery-page-content', array( $this, 'get_gallery_page' ) );
67	add_action( '_wp_put_post_revision', array( $this, 'save_revision' ) );
68	add_action( 'delete_attachment', array( $this, 'delete_attachment' ) );
69	add_action( 'shutdown', array( $this, 'shutdown_preview' ) );
70	add_action( 'wp_loaded', array( $this, 'maybe_change_lightbox' ), 1 );
71
72	// filters
73	add_filter( 'manage_rl_gallery_posts_columns', array( $this, 'gallery_columns' ) );
74	add_filter( 'admin_post_thumbnail_html', array( $this, 'admin_post_thumbnail_html' ), 10, 3 );
75	add_filter( 'post_thumbnail_html', array( $this, 'post_thumbnail_html' ), 10, 5 );
76	add_filter( 'preview_post_link', array( $this, 'preview_post_link' ) );
77	add_filter( 'post_row_actions', array( $this, 'post_row_actions_duplicate' ), 10, 2 );
78
79	if ( ! empty( $_POST['rl_active_tab'] ) )
80	add_filter( 'redirect_post_location', array( $this, 'add_active_tab' ) );
81	}
82
83	/**
84	* Get class data.
85	*
86	* @param string $attr
87	* @return mixed
88	*/
89	public function get_data( $attr ) {
90	return property_exists( $this, $attr ) ? $this->{$attr} : null;
91	}
92
93	/**
94	* Get default gallery single image template.
95	*
96	* @param array $args Template arguments
97	* @return string
98	*/
99	public function get_media_item_template( $args = [] ) {
100	$args = array_merge(
101	array(
102	'draggable' => false,
103	'editable' => false,
104	'removable' => false,
105	'changeable' => false
106	),
107	$args
108	);
109
110	return '
111	<li class="rl-gallery-image__MEDIA_STATUS__" data-attachment_id="__MEDIA_ID__" data-type="__MEDIA_TYPE__"' . ( $args['draggable'] ? ' style="cursor: move;"' : '' ) . '>
112	<div class="rl-gallery-inner">
113	<div class="centered">
114	__MEDIA_DATA__
115	</div>
116	</div>
117	<div class="rl-gallery-actions">' .
118	( $args['changeable'] ? '<a href="#" class="rl-gallery-image-status dashicons dashicons-marker" title="' . esc_attr__( 'Status', 'responsive-lightbox' ) . '"></a>' : '' ) .
119	( $args['editable'] ? '<a href="#" class="rl-gallery-image-edit dashicons dashicons-edit" title="' . esc_attr__( 'Edit image', 'responsive-lightbox' ) . '"></a>' : '' ) .
120	( $args['removable'] ? '<a href="#" class="rl-gallery-image-remove dashicons dashicons-no" title="' . esc_attr__( 'Remove image', 'responsive-lightbox' ) . '"></a>' : '' ) . '
121	</div>
122	</li>';
123	}
124
125	/**
126	* Get default gallery embed template.
127	*
128	* @param bool $js
129	* @return string
130	*/
131	public function get_media_embed_template( $js = false ) {
132	$html = '';
133
134	if ( $js )
135	$html .= '<div data-id="__EMBED_ID__" style="display: none;">';
136
137	$html .= '
138	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][url]" data-type="url" value="__EMBED_URL__">
139	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][width]" data-type="width" value="__EMBED_WIDTH__">
140	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][height]" data-type="height" value="__EMBED_HEIGHT__">
141	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][thumbnail_url]" data-type="thumbnail_url" value="__EMBED_THUMBNAIL_URL__">
142	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][thumbnail_width]" data-type="thumbnail_width" value="__EMBED_THUMBNAIL_WIDTH__">
143	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][thumbnail_height]" data-type="thumbnail_height" value="__EMBED_THUMBNAIL_HEIGHT__">
144	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][title]" data-type="title" value="__EMBED_TITLE__">
145	<textarea class="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][caption]" data-type="caption">__EMBED_DESCRIPTION__</textarea>
146	<input type="hidden" name="rl_gallery[images][media][attachments][embed][__EMBED_ID__][date]" data-type="date" value="__EMBED_DATE__">';
147
148	if ( $js )
149	$html .= '</div>';
150
151	return $html;
152	}
153
154	/**
155	* Get default gallery exclude input template.
156	*
157	* @param string $tab_id
158	* @param string $menu_item
159	* @param string $field_name
160	* @param mixed $excluded_value
161	* @return string
162	*/
163	public function get_media_exclude_input_template( $tab_id = '', $menu_item = '', $field_name = '', $excluded_value = '' ) {
164	$template = '<input type="hidden" class="rl-gallery-exclude" name="rl_gallery[__MEDIA_TAB_ID__][__MEDIA_MENU_ITEM__][__MEDIA_FIELD_NAME__][exclude][]" value="__MEDIA_FIELD_VALUE__" />';
165
166	if ( $tab_id === '' && $menu_item === '' && $field_name === '' && $excluded_value === '' )
167	return str_replace( '__MEDIA_FIELD_VALUE__', '', $template );
168
169	return str_replace(
170	[
171	'__MEDIA_TAB_ID__',
172	'__MEDIA_MENU_ITEM__',
173	'__MEDIA_FIELD_NAME__',
174	'__MEDIA_FIELD_VALUE__'
175	],
176	[
177	esc_attr( $tab_id ),
178	esc_attr( $menu_item ),
179	esc_attr( $field_name ),
180	empty( $excluded_value ) ? '' : esc_attr( $excluded_value )
181	],
182	$template
183	);
184	}
185
186	/**
187	* Load needed data.
188	*
189	* @return void
190	*/
191	public function init() {
192	// register shortcode
193	add_shortcode( 'rl_gallery', array( $this, 'gallery_shortcode' ) );
194
195	// get main instance
196	$rl = Responsive_Lightbox();
197
198	// set lightbox script for infinite scroll pages
199	if ( isset( $_GET['rl_gallery_no'], $_GET['rl_page'], $_GET['rl_lightbox_script'] ) )
200	$rl->set_lightbox_script( sanitize_key( $_GET['rl_lightbox_script'] ) );
201
202	$config_menu_items = apply_filters( 'rl_gallery_types', $rl->get_data( 'gallery_types' ) );
203	$config_menu_items['default'] = __( 'Global', 'responsive-lightbox' );
204
205	// set tabs
206	$this->tabs = apply_filters(
207	'rl_gallery_tabs',
208	array(
209	'images' => array(
210	'label' => __( 'Images', 'responsive-lightbox' ),
211	'description' => __( 'The settings below adjust the contents of the gallery.', 'responsive-lightbox' ),
212	'menu_items' => array(
213	'media' => __( 'Media Library', 'responsive-lightbox' ),
214	'featured' => __( 'Featured Content', 'responsive-lightbox' )
215	)
216	),
217	'config' => array(
218	'label' => __( 'Config', 'responsive-lightbox' ),
219	'description' => __( 'The settings below adjust the configuration options for the gallery.', 'responsive-lightbox' ),
220	'menu_items' => $config_menu_items
221	),
222	'design' => array(
223	'label' => __( 'Design', 'responsive-lightbox' ),
224	'description' => __( 'The settings below adjust the gallery design options.', 'responsive-lightbox' )
225	),
226	'paging' => array(
227	'label' => __( 'Paging', 'responsive-lightbox' ),
228	'description' => __( 'The settings below adjust the gallery pagination options.', 'responsive-lightbox' )
229	),
230	'lightbox' => array(
231	'label' => __( 'Lightbox', 'responsive-lightbox' ),
232	'description' => __( 'The settings below adjust the lightbox options.', 'responsive-lightbox' ),
233	),
234	'misc' => array(
235	'label' => __( 'Misc', 'responsive-lightbox' ),
236	'description' => __( 'The settings below adjust miscellaneous options.', 'responsive-lightbox' ),
237	)
238	)
239	);
240
241	// add folders if active
242	if ( $rl->options['folders']['active'] )
243	$this->tabs['images']['menu_items']['folders'] = __( 'Media Folder', 'responsive-lightbox' );
244
245	// add remote library if active
246	$this->tabs['images']['menu_items']['remote_library'] = __( 'Remote Library', 'responsive-lightbox' );
247
248	// use sizes as keys and values
249	$this->sizes = $this->get_image_sizes();
250	$sizes = array_combine( array_keys( $this->sizes ), array_keys( $this->sizes ) );
251
252	// add default, custom and full image size
253	$sizes['full'] = __( 'Full size', 'responsive-lightbox' );
254	$sizes['global'] = __( 'Global', 'responsive-lightbox' );
255	$sizes['rl_custom_size'] = __( 'Custom size', 'responsive-lightbox' );
256
257	// positions
258	$positions = array(
259	'none' => __( 'None', 'responsive-lightbox' ),
260	'top' => __( 'Top', 'responsive-lightbox' ),
261	'bottom' => __( 'Bottom', 'responsive-lightbox' )
262	);
263
264	// merge titles
265	$merged_titles = array( 'global' => __( 'Global', 'responsive-lightbox' ) ) + $rl->settings->get_data( 'image_titles' );
266
267	// set fields
268	$this->fields = apply_filters(
269	'rl_gallery_tab_fields',
270	array(
271	'images' => array(
272	'media' => array(
273	'attachments' => array(
274	'title' => '',
275	'type' => 'media_library',
276	'default' => array(
277	'ids' => [],
278	'exclude' => [],
279	'embed' => []
280	),
281	'preview' => array(
282	'pagination' => true,
283	'draggable' => true,
284	'editable' => true,
285	'removable' => true,
286	'changeable' => true
287	)
288	)
289	),
290	'featured' => array(
291	'attachments' => array(
292	'title' => '',
293	'type' => 'media_preview',
294	'default' => array(
295	'exclude' => []
296	),
297	'preview' => array(
298	'pagination' => true,
299	'draggable' => false,
300	'editable' => true,
301	'removable' => false,
302	'changeable' => false
303	)
304	),
305	'number_of_posts' => array(
306	'title' => __( 'Number of Posts', 'responsive-lightbox' ),
307	'type' => 'number',
308	'description' => __( 'Enter the number of posts.', 'responsive-lightbox' ),
309	'default' => 10,
310	'min' => 0
311	),
312	'orderby' => array(
313	'title' => __( 'Posts Sorting', 'responsive-lightbox' ),
314	'type' => 'select',
315	'description' => __( 'Select the posts sorting.', 'responsive-lightbox' ),
316	'default' => 'date',
317	'options' => array(
318	'id' => __( 'ID', 'responsive-lightbox' ),
319	'author' => __( 'Author', 'responsive-lightbox' ),
320	'title' => __( 'Title', 'responsive-lightbox' ),
321	'name' => __( 'Slug', 'responsive-lightbox' ),
322	'date' => __( 'Date', 'responsive-lightbox' ),
323	'modified' => __( 'Last modified date', 'responsive-lightbox' ),
324	'parent' => __( 'Parent ID', 'responsive-lightbox' ),
325	'rand' => __( 'Random', 'responsive-lightbox' )
326	)
327	),
328	'order' => array(
329	'title' => __( 'Posts Order', 'responsive-lightbox' ),
330	'type' => 'radio',
331	'description' => __( 'Select the posts order.', 'responsive-lightbox' ),
332	'default' => 'asc',
333	'options' => array(
334	'asc' => __( 'Ascending', 'responsive-lightbox' ),
335	'desc' => __( 'Descending', 'responsive-lightbox' )
336	)
337	),
338	'offset' => array(
339	'title' => __( 'Posts Offset', 'responsive-lightbox' ),
340	'type' => 'number',
341	'description' => __( 'Enter the posts offset.', 'responsive-lightbox' ),
342	'default' => 0,
343	'min' => 0
344	),
345	'image_source' => array(
346	'title' => __( 'Image Source', 'responsive-lightbox' ),
347	'type' => 'radio',
348	'description' => __( 'Select the image source.', 'responsive-lightbox' ),
349	'default' => 'thumbnails',
350	'options' => array(
351	'thumbnails' => __( 'Post Thumbnails', 'responsive-lightbox' ),
352	'attached_images' => __( 'Post Attached Images', 'responsive-lightbox' )
353	)
354	),
355	'images_per_post' => array(
356	'title' => __( 'Images per Post', 'responsive-lightbox' ),
357	'type' => 'number',
358	'description' => __( 'Enter maximum number of images for a post.', 'responsive-lightbox' ),
359	'default' => 1,
360	'min' => 1
361	),
362	'post_type' => array(
363	'title' => __( 'Post Type', 'responsive-lightbox' ),
364	'type' => 'multiselect',
365	'description' => __( 'Select the post types to query.', 'responsive-lightbox' ),
366	'options' => [],
367	'default' => []
368	),
369	'post_status' => array(
370	'title' => __( 'Post Status', 'responsive-lightbox' ),
371	'type' => 'multiselect',
372	'description' => __( 'Select the post status.', 'responsive-lightbox' ),
373	'options' => [],
374	'default' => []
375	),
376	'post_format' => array(
377	'title' => __( 'Post Format', 'responsive-lightbox' ),
378	'type' => 'multiselect',
379	'description' => __( 'Select the post format.', 'responsive-lightbox' ),
380	'options' => [],
381	'default' => []
382	),
383	'post_term' => array(
384	'title' => __( 'Post Term', 'responsive-lightbox' ),
385	'type' => 'multiselect',
386	'description' => __( 'Select the post taxonomy terms to query.', 'responsive-lightbox' ),
387	'options' => [],
388	'default' => []
389	),
390	'post_author' => array(
391	'title' => __( 'Post Author', 'responsive-lightbox' ),
392	'type' => 'multiselect',
393	'description' => __( 'Select the post author.', 'responsive-lightbox' ),
394	'options' => [],
395	'default' => []
396	),
397	'page_parent' => array(
398	'title' => __( 'Page Parent', 'responsive-lightbox' ),
399	'type' => 'multiselect',
400	'description' => __( 'Select the post parent.', 'responsive-lightbox' ),
401	'options' => [],
402	'default' => []
403	),
404	'page_template' => array(
405	'title' => __( 'Page Template', 'responsive-lightbox' ),
406	'type' => 'multiselect',
407	'description' => __( 'Select the page template.', 'responsive-lightbox' ),
408	'options' => [],
409	'default' => []
410	)
411	),
412	'folders' => array(
413	'attachments' => array(
414	'title' => '',
415	'type' => 'media_preview',
416	'default' => array(
417	'exclude' => []
418	),
419	'preview' => array(
420	'pagination' => true,
421	'draggable' => false,
422	'editable' => true,
423	'removable' => false,
424	'changeable' => false
425	)
426	),
427	'folder' => array(
428	'title' => __( 'Media Folder', 'responsive-lightbox' ),
429	'type' => 'taxonomy',
430	'description' => __( 'Select media folder.', 'responsive-lightbox' ),
431	'default' => array(
432	'id' => 0,
433	'children' => false
434	),
435	'include_children' => true,
436	'taxonomy' => $rl->folders->get_active_taxonomy()
437	)
438	),
439	'remote_library' => array(
440	'attachments' => array(
441	'title' => '',
442	'type' => 'media_preview',
443	'default' => array(
444	'exclude' => []
445	),
446	'preview' => array(
447	'pagination' => true,
448	'draggable' => false,
449	'editable' => false,
450	'removable' => false,
451	'changeable' => false
452	)
453	),
454	'media_search' => array(
455	'title' => __( 'Search String', 'responsive-lightbox' ),
456	'type' => 'text',
457	'description' => __( 'Enter the search phrase.', 'responsive-lightbox' ),
458	'default' => ''
459	),
460	'media_provider' => array(
461	'title' => __( 'Media Provider', 'responsive-lightbox' ),
462	'type' => 'select',
463	'description' => __( 'Select which remote library should be used.', 'responsive-lightbox' ),
464	'default' => 'all',
465	'options' => array(
466	'all' => __( 'All Media Providers', 'responsive-lightbox' )
467	)
468	),
469	'response_data' => array(
470	'title' => '',
471	'type' => 'hidden',
472	'description' => '',
473	'default' => '',
474	'callback' => array( $rl->remote_library, 'remote_library_response_data' )
475	)
476	)
477	),
478	'config' => [],
479	'design' => array(
480	'options' => array(
481	'design_show_title' => array(
482	'title' => __( 'Thumbnail Title', 'responsive-lightbox' ),
483	'type' => 'select',
484	'description' => __( 'Select title for the gallery thumbnails.', 'responsive-lightbox' ),
485	'default' => 'global',
486	'options' => $merged_titles
487	),
488	'design_show_caption' => array(
489	'title' => __( 'Thumbnail Caption', 'responsive-lightbox' ),
490	'type' => 'select',
491	'description' => __( 'Select caption for the gallery thumbnails.', 'responsive-lightbox' ),
492	'default' => 'global',
493	'options' => $merged_titles
494	),
495	'show_icon' => array(
496	'title' => __( 'Thumbnail Icon', 'responsive-lightbox' ),
497	'type' => 'radio',
498	'description' => __( 'Select icon for the gallery thumbnails.', 'responsive-lightbox' ),
499	'default' => '0',
500	'options' => array(
501	'0' => __( 'none', 'responsive-lightbox' ),
502	'1' => '',
503	'2' => '',
504	'3' => '',
505	'4' => '',
506	'5' => '',
507	'6' => '',
508	'7' => '',
509	'8' => '',
510	'9' => '',
511	'10' => ''
512	)
513	),
514	'hover_effect' => array(
515	'title' => __( 'Hover Effect', 'responsive-lightbox' ),
516	'type' => 'select',
517	'description' => __( 'Select thumbnail effect on hover.', 'responsive-lightbox' ),
518	'default' => '0',
519	'options' => array(
520	'0' => __( 'none', 'responsive-lightbox' ),
521	'1' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 1 ),
522	'2' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 2 ),
523	'3' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 3 ),
524	'4' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 4 ),
525	'5' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 5 ),
526	'6' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 6 ),
527	'7' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 7 ),
528	'8' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 8 ),
529	'9' => sprintf( __( 'Effect %s', 'responsive-lightbox' ), 9 )
530	)
531	),
532	'caption_font_size' => array(
533	'title' => __( 'Caption Font Size', 'responsive-lightbox' ),
534	'type' => 'number',
535	'default' => 13,
536	'step' => 1,
537	'min' => 10,
538	'max' => 20,
539	'append' => 'px'
540	),
541	'caption_padding' => array(
542	'title' => __( 'Caption Padding', 'responsive-lightbox' ),
543	'type' => 'number',
544	'default' => 20,
545	'step' => 1,
546	'min' => 5,
547	'max' => 30,
548	'append' => 'px'
549	),
550	'title_color' => array(
551	'title' => __( 'Title Color', 'responsive-lightbox' ),
552	'type' => 'color_picker',
553	'default' => '#ffffff'
554	),
555	'caption_color' => array(
556	'title' => __( 'Caption Color', 'responsive-lightbox' ),
557	'type' => 'color_picker',
558	'default' => '#cccccc'
559	),
560	'background_color' => array(
561	'title' => __( 'Background Color', 'responsive-lightbox' ),
562	'type' => 'color_picker',
563	'default' => '#000000'
564	),
565	'background_opacity' => array(
566	'title' => __( 'Background Opacity', 'responsive-lightbox' ),
567	'type' => 'number',
568	'default' => 80,
569	'step' => 1,
570	'min' => 0,
571	'max' => 100,
572	'append' => '%'
573	),
574	'border_color' => array(
575	'title' => __( 'Border Color', 'responsive-lightbox' ),
576	'type' => 'color_picker',
577	'default' => '#000000'
578	),
579	'border_width' => array(
580	'title' => __( 'Border Width', 'responsive-lightbox' ),
581	'type' => 'number',
582	'default' => 0,
583	'step' => 1,
584	'min' => 0,
585	'max' => 100,
586	'append' => 'px'
587	)
588	)
589	),
590	'paging' => array(
591	'options' => array(
592	'pagination' => array(
593	'title' => __( 'Use Pagination', 'responsive-lightbox' ),
594	'type' => 'boolean',
595	'label' => __( 'Enable pagination.', 'responsive-lightbox' ),
596	'default' => false
597	),
598	'pagination_type' => array(
599	'title' => __( 'Pagination Type', 'responsive-lightbox' ),
600	'type' => 'select',
601	'description' => __( 'Select pagination type.', 'responsive-lightbox' ),
602	'default' => 'paged',
603	'options' => array(
604	'paged' => __( 'standard', 'responsive-lightbox' ),
605	'ajax' => __( 'AJAX', 'responsive-lightbox' ),
606	'infinite' => __( 'infinite scroll', 'responsive-lightbox' )
607	)
608	),
609	'pagination_position' => array(
610	'title' => __( 'Pagination Position', 'responsive-lightbox' ),
611	'type' => 'select',
612	'description' => __( 'Select pagination position.', 'responsive-lightbox' ),
613	'default' => 'bottom',
614	'options' => array(
615	'bottom' => __( 'bottom', 'responsive-lightbox' ),
616	'top' => __( 'top', 'responsive-lightbox' ),
617	'both' => __( 'top & bottom', 'responsive-lightbox' )
618	)
619	),
620	'images_per_page' => array(
621	'title' => __( 'Images Per Page', 'responsive-lightbox' ),
622	'type' => 'number',
623	'description' => __( 'Number of images per page.', 'responsive-lightbox' ),
624	'default' => get_option( 'posts_per_page', 20 ),
625	'step' => 1,
626	'min' => 0
627	),
628	'load_more' => array(
629	'title' => __( 'Load More', 'responsive-lightbox' ),
630	'type' => 'radio',
631	'description' => __( 'Select the load more trigger (infinite scroll only).', 'responsive-lightbox' ),
632	'default' => 'automatically',
633	'options' => array(
634	'automatically' => __( 'Automatically', 'responsive-lightbox' ),
635	'manually' => __( 'On click', 'responsive-lightbox' )
636	)
637	)
638	)
639	),
640	'lightbox' => array(
641	'options' => array(
642	'lightbox_enable' => array(
643	'title' => __( 'Enable Lightbox', 'responsive-lightbox' ),
644	'type' => 'boolean',
645	'label' => __( 'Enable lightbox effect for the gallery.', 'responsive-lightbox' ),
646	'default' => true
647	),
648	'lightbox_image_size' => array(
649	'title' => __( 'Image Size', 'responsive-lightbox' ),
650	'type' => 'select',
651	'description' => __( 'Select image size for gallery lightbox.', 'responsive-lightbox' ),
652	'default' => 'global',
653	'options' => $sizes
654	),
655	'lightbox_custom_size' => array(
656	'title' => __( 'Custom Size', 'responsive-lightbox' ),
657	'type' => 'multiple',
658	'description' => __( 'Choose the custom image size for gallery lightbox (used if Custom Image size is selected).', 'responsive-lightbox' ),
659	'fields' => array(
660	'lightbox_custom_size_width' => array(
661	'type' => 'number',
662	'append' => __( 'width in px', 'responsive-lightbox' ),
663	'default' => (int) get_option( 'large_size_w' )
664	),
665	'lightbox_custom_size_height' => array(
666	'type' => 'number',
667	'append' => __( 'height in px', 'responsive-lightbox' ),
668	'default' => (int) get_option( 'large_size_h' )
669	)
670	)
671	),
672	'lightbox_image_title' => array(
673	'title' => __( 'Image Title', 'responsive-lightbox' ),
674	'type' => 'select',
675	'description' => __( 'Select image title for gallery lightbox.', 'responsive-lightbox' ),
676	'default' => 'global',
677	'options' => $merged_titles
678	),
679	'lightbox_image_caption' => array(
680	'title' => __( 'Image Caption', 'responsive-lightbox' ),
681	'type' => 'select',
682	'description' => __( 'Select image caption for gallery lightbox (used if supported by selected lightbox effect).', 'responsive-lightbox' ),
683	'default' => 'global',
684	'options' => $merged_titles
685	)
686	)
687	),
688	'misc' => array(
689	'options' => array(
690	'gallery_title_position' => array(
691	'title' => __( 'Title Position', 'responsive-lightbox' ),
692	'type' => 'select',
693	'description' => __( 'Select where to display the title.', 'responsive-lightbox' ),
694	'default' => 'none',
695	'options' => $positions
696	),
697	'gallery_description_position' => array(
698	'title' => __( 'Description Position', 'responsive-lightbox' ),
699	'type' => 'select',
700	'description' => __( 'Select where to display the description.', 'responsive-lightbox' ),
701	'default' => 'none',
702	'options' => $positions
703	),
704	'gallery_description' => array(
705	'title' => __( 'Gallery Description', 'responsive-lightbox' ),
706	'type' => 'textarea',
707	'description' => __( 'Enter the gallery description (optional).', 'responsive-lightbox' ),
708	'default' => '',
709	'class' => 'large-text'
710	),
711	'gallery_custom_class' => array(
712	'title' => __( 'Custom Classes', 'responsive-lightbox' ),
713	'type' => 'class',
714	'description' => __( 'Add custom, space saparated CSS classes (optional).', 'responsive-lightbox' ),
715	'default' => '',
716	'class' => 'large-text'
717	)
718	)
719	)
720	)
721	);
722
723	if ( ! $rl->options['folders']['active'] )
724	unset( $this->fields['images']['folders'] );
725
726	// is remote library active?
727	if ( $rl->options['remote_library']['active'] ) {
728	// get providers
729	$providers = $rl->remote_library->get_providers();
730	$active_providers = $rl->remote_library->get_active_providers();
731
732	// update active providers
733	foreach ( $active_providers as $provider ) {
734	$this->fields['images']['remote_library']['media_provider']['options'][$provider] = $providers[$provider]['name'];
735	}
736	}
737	}
738
739	/**
740	* Duplicate gallery action in admin.
741	*
742	* @return void
743	*/
744	public function duplicate_gallery() {
745	if ( ! ( isset( $_GET['post'] ) \|\| isset( $_POST['post'] ) ) \|\| ! isset( $_REQUEST['action'] ) \|\| ! isset( $_REQUEST['rl_gallery_nonce'] ) \|\| ( isset( $_REQUEST['rl_gallery_nonce'] ) && ! wp_verify_nonce( $_REQUEST['rl_gallery_nonce'], 'responsive-lightbox-duplicate-gallery' ) ) )
746	wp_die( esc_html__( 'No gallery to duplicate has been supplied!', 'responsive-lightbox' ) );
747
748	// get the original post
749	$post_id = isset( $_GET['post'] ) ? (int) $_GET['post'] : ( isset( $_POST['post'] ) ? (int) $_POST['post'] : 0 );
750
751	if ( empty( $post_id ) )
752	wp_die( esc_html__( 'No gallery to duplicate has been supplied!', 'responsive-lightbox' ) );
753
754	if ( ! current_user_can( 'edit_post', $post_id ) )
755	wp_die( esc_html__( 'You do not have permission to copy this gallery.', 'responsive-lightbox' ) );
756
757	$post = get_post( $post_id );
758
759	// copy the post and insert it
760	if ( isset( $post ) && $post !== null ) {
761	$this->create_gallery_duplicate( $post );
762
763	// redirect to the post list screen
764	wp_redirect( admin_url( 'edit.php?post_type=' . $post->post_type ) );
765	exit;
766	} else
767	wp_die( esc_html__( 'Copy creation failed, could not find original gallery:', 'responsive-lightbox' ) . ' ' . (int) $post_id );
768	}
769
770	/**
771	* Add duplicate link to gallery listing.
772	*
773	* @global string $pagenow
774	*
775	* @param array $actions Link actions
776	* @param object $post Post object
777	* @return array
778	*/
779	public function post_row_actions_duplicate( $actions, $post ) {
780	global $pagenow;
781
782	if ( $post->post_type !== 'rl_gallery' )
783	return $actions;
784
785	if ( ! current_user_can( 'edit_post', $post->ID ) )
786	return $actions;
787
788	// duplicate link
789	$actions['duplicate_gallery'] = '<a class="duplicate-gallery" title="' . esc_attr__( 'Duplicate this item', 'responsive-lightbox' ) . '" href="' . esc_url( wp_nonce_url( admin_url( $pagenow . '?post=' . $post->ID . '&action=duplicate_gallery' ), 'responsive-lightbox-duplicate-gallery', 'rl_gallery_nonce' ) ) . '">' . esc_html__( 'Duplicate', 'responsive-lightbox' ) . '</a>';
790
791	return $actions;
792	}
793
794	/**
795	* Create a gallery duplicate.
796	*
797	* @param $post object Post object
798	* @return void\|int
799	*/
800	public function create_gallery_duplicate( $post ) {
801	// skip revisions
802	if ( $post->post_type === 'revision' )
803	return;
804
805	$new_post = apply_filters(
806	'rl_duplicate_gallery_args',
807	[
808	'menu_order' => $post->menu_order,
809	'comment_status' => $post->comment_status,
810	'ping_status' => $post->ping_status,
811	'post_author' => $post->post_author,
812	'post_content' => $post->post_content,
813	'post_excerpt' => $post->post_excerpt,
814	'post_mime_type' => $post->post_mime_type,
815	'post_parent' => $post->post_parent,
816	'post_password' => $post->post_password,
817	'post_status' => $post->post_status,
818	'post_title' => $post->post_title,
819	'post_type' => $post->post_type,
820	'post_date' => current_time( 'mysql' ),
821	'post_date_gmt' => get_gmt_from_date( current_time( 'mysql' ) )
822	],
823	$post
824	);
825
826	$new_post_id = wp_insert_post( $new_post );
827
828	// if the copy is published or scheduled, we have to set a proper slug
829	if ( $new_post['post_status'] === 'publish' \|\| $new_post['post_status'] === 'future' ) {
830	$post_name = wp_unique_post_slug( $post->post_name, $new_post_id, $new_post['post_status'], $post->post_type, $new_post['post_parent'] );
831
832	$new_post = [];
833	$new_post['ID'] = $new_post_id;
834	$new_post['post_name'] = $post_name;
835
836	// update the post into the database
837	wp_update_post( $new_post );
838	}
839
840	// create metadata for the duplicated gallery
841	$this->create_gallery_duplicate_metadata( $new_post_id, $post );
842
843	// copy taxonomies
844	$this->duplicate_gallery_taxonomies( $new_post_id, $post );
845
846	// action hook for developers
847	do_action( 'rl_after_duplicate_gallery', $new_post_id, $post );
848
849	return $new_post_id;
850	}
851
852	/**
853	* Create a gallery duplicate metadata.
854	*
855	* @param int $new_post_id Post ID
856	* @param object $post Post object
857	* @return void
858	*/
859	public function create_gallery_duplicate_metadata( $new_post_id, $post ) {
860	if ( empty( $post ) \|\| $post == null )
861	return;
862
863	// meta keys to be copied
864	$meta_keys = apply_filters( 'rl_duplicate_gallery_meta_keys', get_post_custom_keys( $post->ID ) );
865
866	if ( empty( $meta_keys ) )
867	return;
868
869	foreach ( $meta_keys as $meta_key ) {
870	// meta values to be copied
871	$meta_values = apply_filters( 'rl_duplicate_gallery_meta_values', get_post_custom_values( $meta_key, $post->ID ) );
872
873	foreach ( $meta_values as $meta_value ) {
874	$meta_value = maybe_unserialize( $meta_value );
875
876	// add metadata to duplicated post
877	add_post_meta( $new_post_id, $meta_key, $meta_value );
878	}
879	}
880	}
881
882	/**
883	* Copy the taxonomies of a gallery to another gallery.
884	*
885	* @global object $wpdb
886	*
887	* @param int $new_post_id Post ID
888	* @param object $post Post object
889	* @return void
890	*/
891	function duplicate_gallery_taxonomies( $new_post_id, $post ) {
892	global $wpdb;
893
894	if ( isset( $wpdb->terms ) ) {
895	// clear default category
896	wp_set_object_terms( $new_post_id, null, 'category' );
897
898	// get gallery taxonomies
899	$gallery_taxonomies = get_object_taxonomies( $post->post_type );
900
901	if ( ! empty( $gallery_taxonomies ) ) {
902	foreach ( $gallery_taxonomies as $taxonomy ) {
903	$terms = [];
904
905	// get taxonomy terms
906	$post_terms = wp_get_object_terms( $post->ID, $taxonomy, array( 'orderby' => 'term_order' ) );
907
908	if ( ! empty( $post_terms ) ) {
909	foreach ( $post_terms as $term ) {
910	$terms[] = $term->slug;
911	}
912	}
913
914	// copy taxonomy terms
915	wp_set_object_terms( $new_post_id, $terms, $taxonomy );
916	}
917	}
918	}
919	}
920
921	/**
922	* Add a gallery shortcode.
923	*
924	* @param array $args Shortcode arguments
925	* @return string
926	*/
927	public function gallery_shortcode( $args ) {
928	// enable only for frontend previews
929	if ( ! is_admin() && is_preview() )
930	add_filter( 'get_post_metadata', array( $this, 'filter_preview_metadata' ), 10, 4 );
931
932	// prepare defaults
933	$defaults = [ 'id' => 0 ];
934
935	// merge defaults with arguments
936	$args = array_merge( $defaults, $args );
937
938	// parse id
939	$args['id'] = (int) $args['id'];
940
941	// is it gallery?
942	if ( get_post_type( $args['id'] ) !== 'rl_gallery' )
943	return '';
944
945	// private gallery?
946	if ( get_post_status( $args['id'] ) === 'private' && ! current_user_can( 'read_private_posts' ) )
947	return '';
948
949	$images_args = [ 'exclude' => true ];
950
951	if ( isset( $args['preview'] ) )
952	$images_args['preview'] = (bool) $args['preview'];
953	elseif( isset( $_GET['rl_gallery_revision_id'], $_GET['preview'] ) && $_GET['preview'] === 'true' )
954	$images_args['preview'] = true;
955	else
956	$images_args['preview'] = false;
957
958	// get images
959	$images = $this->get_gallery_images( $args['id'], $images_args );
960
961	if ( ! $images )
962	return '';
963
964	$attachments = [];
965
966	// build config
967	foreach ( $images as $image ) {
968	if ( ! empty( $image['id'] ) )
969	$attachments[] = $image['id'];
970	}
971
972	// get config data
973	$config = get_post_meta( $args['id'], '_rl_config', true );
974	if ( ! is_array( $config ) )
975	$config = [];
976
977	// get main instance
978	$rl = Responsive_Lightbox();
979
980	// available gallery types
981	$gallery_types = apply_filters( 'rl_gallery_types', $rl->get_data( 'gallery_types' ) );
982	if ( ! is_array( $gallery_types ) )
983	$gallery_types = [];
984
985	// prepare gallery shortcode parameters
986	$fields = [];
987	$gallery_type = '';
988	$menu_item = ! empty( $config['menu_item'] ) ? $config['menu_item'] : 'default';
989	if ( ! empty( $menu_item ) && $menu_item !== 'default' && ! array_key_exists( $menu_item, $gallery_types ) )
990	$menu_item = 'default';
991
992	// valid menu item?
993	if ( ! empty( $menu_item ) ) {
994	// assign data from db
995	$data = isset( $config[$menu_item] ) && is_array( $config[$menu_item] ) ? $config[$menu_item] : [];
996
997	foreach ( $rl->frontend->get_default_gallery_fields() as $field_name => $field_args ) {
998	// replace default values
999	if ( array_key_exists( $field_name, $data ) )
1000	$fields[$field_name] = $data[$field_name];
1001	}
1002
1003	// is it default gallery type?
1004	if ( $menu_item === 'default' ) {
1005	// set new gallery type
1006	$gallery_type = $rl->options['settings']['builder_gallery'];
1007
1008	// fallback to a valid gallery type
1009	if ( empty( $gallery_type ) \|\| ! array_key_exists( $gallery_type, $gallery_types ) )
1010	$gallery_type = $rl->defaults['settings']['builder_gallery'];
1011
1012	// assign gallery settings
1013	$gallery_fields = $rl->settings->get_setting_fields( $gallery_type . '_gallery' );
1014	// assign gallery defaults
1015	if ( array_key_exists( $gallery_type . '_gallery', $rl->options ) )
1016	$gallery_defaults = $rl->options[$gallery_type . '_gallery'];
1017	} else {
1018	$gallery_type = $menu_item;
1019
1020	// fallback to a valid gallery type
1021	if ( empty( $gallery_type ) \|\| ! array_key_exists( $gallery_type, $gallery_types ) )
1022	$gallery_type = $rl->options['settings']['builder_gallery'];
1023
1024	// assign gallery settings
1025	$gallery_fields = $rl->settings->get_setting_fields( $menu_item . '_gallery' );
1026	// assign gallery defaults
1027	if ( array_key_exists( $menu_item . '_gallery', $rl->defaults ) )
1028	$gallery_defaults = $rl->defaults[$menu_item . '_gallery'];
1029	}
1030
1031	if ( ! isset( $gallery_defaults ) && ! empty( $gallery_type ) && array_key_exists( $gallery_type . '_gallery', $rl->defaults ) )
1032	$gallery_defaults = $rl->defaults[$gallery_type . '_gallery'];
1033
1034	if ( ! isset( $gallery_fields ) && ! empty( $gallery_type ) )
1035	$gallery_fields = $rl->settings->get_setting_fields( $gallery_type . '_gallery' );
1036
1037	if ( isset( $gallery_fields, $gallery_defaults ) ) {
1038	// run through all fields
1039	foreach ( $gallery_fields as $field_name => $field_args ) {
1040	if ( $field_args['type'] === 'multiple' ) {
1041	foreach ( $field_args['fields'] as $subfield_name => $subfield_args ) {
1042	// field exists in db?
1043	if ( array_key_exists( $subfield_name, $data ) )
1044	$fields[$subfield_name] = $data[$subfield_name];
1045	elseif ( isset( $rl->options[$gallery_type . '_gallery'][ $subfield_name ] ) )
1046	$fields[$subfield_name] = $rl->options[$gallery_type . '_gallery'][ $subfield_name ];
1047	else
1048	$fields[$subfield_name] = $gallery_defaults[$subfield_name];
1049	}
1050	} else {
1051	// field exists in db?
1052	if ( array_key_exists( $field_name, $data ) )
1053	$fields[$field_name] = $data[$field_name];
1054	elseif ( isset( $rl->options[$gallery_type . '_gallery'][ $field_name ] ) )
1055	$fields[$field_name] = $rl->options[$gallery_type . '_gallery'][ $field_name ];
1056	else
1057	$fields[$field_name] = $gallery_defaults[$field_name];
1058	}
1059	}
1060	}
1061	// add gallery type
1062	if ( ! empty( $gallery_type ) && array_key_exists( $gallery_type, $gallery_types ) )
1063	$fields['type'] = $gallery_type;
1064	}
1065
1066	// ensure gallery type is present and valid
1067	if ( empty( $fields['type'] ) \|\| ! array_key_exists( $fields['type'], $gallery_types ) ) {
1068	$fallback_type = $rl->options['settings']['builder_gallery'];
1069	if ( empty( $fallback_type ) \|\| ! array_key_exists( $fallback_type, $gallery_types ) )
1070	$fallback_type = $rl->defaults['settings']['builder_gallery'];
1071
1072	if ( ! empty( $fallback_type ) && array_key_exists( $fallback_type, $gallery_types ) )
1073	$fields['type'] = $fallback_type;
1074	}
1075
1076	$shortcode = '';
1077
1078	foreach ( $fields as $arg => $value ) {
1079	if ( is_array( $value ) )
1080	$shortcode .= ' ' . esc_attr( $arg ) . '="' . esc_attr( (string) implode( ',', $value ) ) . '"';
1081	else
1082	$shortcode .= ' ' . esc_attr( $arg ) . '="' . esc_attr( (string) $value ) . '"';
1083	}
1084
1085	// get design data
1086	$design = get_post_meta( $args['id'], '_rl_design', true );
1087
1088	if ( ! empty( $design['menu_item'] ) ) {
1089	$design_data = $design[$design['menu_item']];
1090
1091	// remove show_title to avoid shortcode attribute duplication
1092	if ( isset( $design_data['show_title'] ) ) {
1093	if ( ! isset( $design_data['design_show_title'] ) )
1094	$design_data['design_show_title'] = $design_data['show_title'];
1095
1096	unset( $design_data['show_title'] );
1097	}
1098
1099	// remove show_caption to avoid shortcode attribute duplication
1100	if ( isset( $design_data['show_caption'] ) ) {
1101	if ( ! isset( $design_data['design_show_caption'] ) )
1102	$design_data['design_show_caption'] = $design_data['show_caption'];
1103
1104	unset( $design_data['show_caption'] );
1105	}
1106
1107	foreach ( $design_data as $arg => $value ) {
1108	$shortcode .= ' ' . esc_attr( $arg ) . '="' . esc_attr( (string) $value ) . '"';
1109	}
1110	}
1111
1112	// get lightbox data
1113	$lightbox = get_post_meta( $args['id'], '_rl_lightbox', true );
1114
1115	if ( ! empty( $lightbox['menu_item'] ) ) {
1116	foreach ( $lightbox[$lightbox['menu_item']] as $arg => $value ) {
1117	$shortcode .= ' ' . esc_attr( $arg ) . '="' . esc_attr( (string) $value ) . '"';
1118	}
1119	}
1120
1121	$forced_gallery_no = 0;
1122
1123	// check forced gallery number
1124	if ( isset( $args['gallery_no'] ) ) {
1125	$args['gallery_no'] = (int) $args['gallery_no'];
1126
1127	if ( $args['gallery_no'] > 0 )
1128	$forced_gallery_no = $args['gallery_no'];
1129	}
1130
1131	// get content
1132	$content = do_shortcode( '[gallery rl_gallery_id="' . esc_attr( $args['id'] ) .'"' . ( $forced_gallery_no > 0 ? ' rl_gallery_no="' . (int) $forced_gallery_no .'"' : '' ) . ' include="' . ( empty( $attachments ) ? '' : esc_attr( implode( ',', $attachments ) ) ) . '"' . $shortcode . ']' );
1133
1134	// make sure every filter is available in frontend ajax
1135	if ( wp_doing_ajax() )
1136	$content = $rl->frontend->add_lightbox( $content );
1137
1138	return $content;
1139	}
1140
1141	/**
1142	* Add a gallery button.
1143	*
1144	* @param string $editor_id Editor ID
1145	* @return void
1146	*/
1147	public function add_gallery_button( $editor_id ) {
1148	if ( get_post_type() === 'rl_gallery' )
1149	return;
1150
1151	$this->enqueue_gallery_scripts_styles();
1152
1153	echo '<button type="button" id="rl-insert-modal-gallery-button" class="button" data-editor="' . esc_attr( $editor_id ) . '"><span class="wp-media-buttons-icon dashicons dashicons-format-gallery"></span> ' . esc_html__( 'Add Gallery', 'responsive-lightbox' ) . '</button>';
1154	}
1155
1156	/**
1157	* Enqueue scripts and styles needed for gallery modal.
1158	*
1159	* @global string $pagenow
1160	*
1161	* @return void
1162	*/
1163	public function enqueue_gallery_scripts_styles() {
1164	global $pagenow;
1165
1166	// count how many times function was executed
1167	static $run = 0;
1168
1169	// allow this only once
1170	if ( $run > 0 )
1171	return;
1172
1173	$run++;
1174
1175	// get main instance
1176	$rl = Responsive_Lightbox();
1177
1178	wp_enqueue_script( 'responsive-lightbox-admin-gallery', RESPONSIVE_LIGHTBOX_URL . '/js/admin-gallery.js', array( 'jquery', 'underscore' ), $rl->defaults['version'], false );
1179
1180	// prepare script data
1181	$script_data = [
1182	'nonce' => wp_create_nonce( 'rl-gallery-post' ),
1183	'post_id' => get_the_ID(),
1184	'page' => esc_url( $pagenow )
1185	];
1186
1187	wp_add_inline_script( 'responsive-lightbox-admin-gallery', 'var rlArgsGallery = ' . wp_json_encode( $script_data ) . ";\n", 'before' );
1188
1189	wp_enqueue_style( 'responsive-lightbox-admin-gallery', RESPONSIVE_LIGHTBOX_URL . '/css/admin-gallery.css', [], $rl->defaults['version'] );
1190	}
1191
1192	/**
1193	* Modal gallery HTML template.
1194	*
1195	* @global string $wp_version
1196	* @global string $pagenow
1197	*
1198	* @return void
1199	*/
1200	public function modal_gallery_template() {
1201	global $wp_version;
1202	global $pagenow;
1203
1204	// display only for post edit pages
1205	if ( ! ( ( ( $pagenow === 'post.php' \|\| $pagenow === 'post-new.php' ) && get_post_type() !== 'rl_gallery' ) \|\| ( version_compare( $wp_version, '5.8', '>=' ) && ( $pagenow === 'widgets.php' \|\| $pagenow === 'customize.php' ) ) ) )
1206	return;
1207
1208	// get main instance
1209	$rl = Responsive_Lightbox();
1210
1211	$categories = '';
1212
1213	// builder categories?
1214	if ( $rl->options['builder']['categories'] ) {
1215	$terms = get_terms(
1216	array(
1217	'taxonomy' => 'rl_category',
1218	'orderby' => 'name',
1219	'order' => 'ASC',
1220	'hide_empty' => false,
1221	'fields' => 'id=>name'
1222	)
1223	);
1224
1225	// get categories dropdown
1226	$categories = wp_dropdown_categories(
1227	array(
1228	'orderby' => 'name',
1229	'order' => 'asc',
1230	'show_option_none' => empty( $terms ) ? __( 'All categories', 'responsive-lightbox' ) : '',
1231	'show_option_all' => __( 'All categories', 'responsive-lightbox' ),
1232	'show_count' => false,
1233	'hide_empty' => false,
1234	'option_none_value' => 0,
1235	'hierarchical' => true,
1236	'selected' => 0,
1237	'taxonomy' => 'rl_category',
1238	'hide_if_empty' => false,
1239	'echo' => false,
1240	'id' => 'rl-media-attachment-categories',
1241	'class' => 'attachment-filters',
1242	'name' => ''
1243	)
1244	);
1245	}
1246
1247	echo '
1248	<div id="rl-modal-gallery" style="display: none;">
1249	<div class="media-modal wp-core-ui">
1250	<button type="button" class="media-modal-close"><span class="media-modal-icon"><span class="screen-reader-text">' . esc_html__( 'Close', 'responsive-lightbox' ) . '</span></span></button>
1251	<div class="media-modal-content">
1252	<div class="media-frame mode-select wp-core-ui hide-menu hide-router">
1253	<div class="media-frame-title">
1254	<h1 class="wrap">' . esc_html__( 'Insert Gallery', 'responsive-lightbox' ) . ' <a class="rl-reload-galleries page-title-action" href="#">' . esc_html__( 'Reload', 'responsive-lightbox' ). '</a><span class="rl-gallery-reload-spinner spinner"></span></h1>
1255	</div>
1256	<div class="media-frame-content" data-columns="0">
1257	<div class="attachments-browser">
1258	<div class="uploader-inline rl-no-galleries" style="display: none;">
1259	<div class="uploader-inline-content has-upload-message">
1260	<h2 class="upload-message">' . esc_html__( 'No items found.', 'responsive-lightbox' ) . '</h2>
1261	<div class="upload-ui">
1262	<h2 class="upload-instructions">' . esc_html__( 'No galleries? Create them first or try another search phrase.', 'responsive-lightbox' ) . '</h2>
1263	</div>
1264	</div>
1265	</div>
1266	<div class="media-toolbar">' . ( $rl->options['builder']['categories'] ? '
1267	<div class="media-toolbar-secondary"><label for="rl-media-attachment-categories" class="screen-reader-text">' . esc_html__( 'Filter by category', 'responsive-lightbox' ) . '</label>' . ( $categories !== '' ? wp_kses( $categories, $this->allowed_select_html ) : '' ) . '</div>' : '' ) . '
1268	<div class="media-toolbar-primary search-form">
1269	<label for="rl-media-search-input" class="screen-reader-text">' . esc_html__( 'Search galleries', 'responsive-lightbox' ) . '</label><input type="search" placeholder="' . esc_attr__( 'Search galleries', 'responsive-lightbox' ) . '" id="rl-media-search-input" class="search">
1270	</div>
1271	</div>
1272	<ul class="attachments rl-galleries-list ui-sortable ui-sortable-disabled">
1273	</ul>
1274	<div class="media-sidebar visible">
1275	<h2>' . esc_html__( 'Select A Gallery', 'responsive-lightbox' ) . '</h2>
1276	<p>' . esc_html__( 'To select a gallery simply click on one of the boxes to the left.', 'responsive-lightbox' ) . '</p>
1277	<p>' . esc_html__( 'To insert your gallery into the editor, click on the "Insert Gallery" button below.', 'responsive-lightbox' ) . '</p>
1278	</div>
1279	</div>
1280	</div>
1281	<div class="media-frame-toolbar">
1282	<div class="media-toolbar">
1283	<div class="media-toolbar-secondary">
1284	<div class="media-selection empty">
1285	<div class="selection-info">
1286	<span class="rl-gallery-count count">' . esc_html( sprintf( _n( '%s image', '%s images', 0, 'responsive-lightbox' ), 0 ) ) . '</span>
1287	<a href="" class="button-link rl-edit-gallery-link">' . esc_html__( 'Edit gallery', 'responsive-lightbox' ) . '</a>
1288	</div>
1289	<div class="selection-view">
1290	<span class="rl-gallery-images-spinner spinner" style="display: none;"></span>
1291	<ul class="attachments rl-attachments-list">
1292	</ul>
1293	</div>
1294	</div>
1295	</div>
1296	<div class="media-toolbar-primary search-form">
1297	<button style="display: none;" type="button" class="button media-button button-primary button-large rl-media-button-insert-gallery" disabled="disabled">' . esc_html__( 'Insert gallery into post', 'responsive-lightbox') . '</button>
1298	<button style="display: none;" type="button" class="button media-button button-primary button-large rl-media-button-select-gallery" disabled="disabled">' . esc_html__( 'Select gallery', 'responsive-lightbox') . '</button>
1299	<button type="button" class="button media-button button-secondary button-large rl-media-button-cancel-gallery">' . esc_html__( 'Cancel', 'responsive-lightbox') . '</button>
1300	</div>
1301	</div>
1302	</div>
1303	</div>
1304	</div>
1305	</div>
1306	<div class="media-modal-backdrop"></div>
1307	</div>';
1308	}
1309
1310	/**
1311	* Render gallery field.
1312	*
1313	* @param string $field Field name
1314	* @param string $tab_id Field tab
1315	* @param string $menu_item Field parent
1316	* @param array $args Field arguments
1317	* @param int $gallery_id Gallery ID
1318	* @param bool $subfield Is this a subfield
1319	* @return string
1320	*/
1321	public function render_field( $field, $tab_id, $menu_item, $args, $gallery_id, $subfield = false ) {
1322	$disabled = ! empty( $args['disabled'] );
1323	$disabled_attr = $disabled ? ' disabled="disabled"' : '';
1324
1325	if ( $subfield ) {
1326	$template = '%s%s';
1327	$html = '';
1328	$subhtml = '';
1329	} else {
1330	$template = $args['type'] === 'section' ? '<th colspan="2"><h3>%s</h3></th>' : '<th><label for="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '">%s</label></th><td>%s</td>';
1331	$html = '<tr class="rl-gallery-field-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . ' rl-gallery-field-' . esc_attr( $args['type'] ) . ( $disabled ? ' rl-gallery-field-disabled' : '' ) . '" data-field_type="' . esc_attr( $args['type'] ) . '" data-field_name="' . esc_attr( $field ) . '">';
1332	$subhtml = '';
1333	}
1334
1335	switch ( $args['type'] ) {
1336	case 'range':
1337	$html .= sprintf(
1338	$template,
1339	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1340	'<input id="rl_' . esc_attr( $tab_id . '_' . $menu_item . '_' . $field ) . '" type="range" value="' . (int) $args['value'] . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']" min="' . ( ! empty( $args['min'] ) ? (int) $args['min'] : 0 ) . '"' . ( ! empty( $args['max'] ) ? ' max="' . (int) $args['max'] . '"' : '' ) . ' step="' . ( ! empty( $args['step'] ) ? (int) $args['step'] : 1 ) . '" oninput="this.form.rl_' . esc_attr( $tab_id ) . '_' . esc_attr( $menu_item ) . '_' . esc_attr( $field ) . '_range.value=this.value"' . $disabled_attr . ' /><output class="rl-gallery-field-output" name="rl_' . esc_attr( $tab_id ) . '_' . esc_attr( $menu_item ) . '_' . esc_attr( $field ) . '_range">' . (int) $args['value'] . '</output>' . ( ! empty( $args['append'] ) ? ' <span>' . esc_html( $args['append'] ) . '</span>' : '' ) . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1341	);
1342	break;
1343
1344	case 'radio':
1345	$subhtml = '';
1346
1347	foreach ( $args['options'] as $key => $label ) {
1348	$subhtml .= '<label class="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" for="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field . '-' . $key ) . '"><input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field . '-' . $key ) . '" type="radio" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']" value="' . esc_attr( $key ) . '" ' . checked( $key, $args['value'], false ) . $disabled_attr . ' />' . esc_html( $label ) . '</label> ';
1349	}
1350
1351	$html .= sprintf(
1352	$template,
1353	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1354	$subhtml . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1355	);
1356	break;
1357
1358	case 'number':
1359	$html .= sprintf(
1360	$template,
1361	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1362	'<input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" class="small-text" type="number" value="' . esc_attr( $args['value'] ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']" min="' . ( ! empty( $args['min'] ) ? (int) $args['min'] : 0 ) . '"' . ( ! empty( $args['max'] ) ? ' max="' . (int) $args['max'] . '"' : '' ) . ' step="' . ( ! empty( $args['step'] ) ? (int) $args['step'] : 1 ) . '"' . $disabled_attr . ' />' . ( ! empty( $args['append'] ) ? ' <span>' . esc_html( $args['append'] ) . '</span>' : '' ) . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1363	);
1364	break;
1365
1366	case 'text':
1367	$html .= sprintf(
1368	$template,
1369	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1370	'<input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '"' . ( ! empty( $args['class'] ) ? ' class="' . esc_attr( $args['class'] ) . '"' : '' ) . ' type="text" value="' . esc_attr( $args['value'] ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']"' . $disabled_attr . ' />' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1371	);
1372	break;
1373
1374	case 'class':
1375	case 'textarea':
1376	$html .= sprintf(
1377	$template,
1378	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1379	'<textarea id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '"' . ( ! empty( $args['class'] ) ? ' class="' . esc_attr( $args['class'] ) . '"' : '' ) . ' name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']"' . $disabled_attr . '>' . esc_textarea( $args['value'] ) . '</textarea>' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1380	);
1381	break;
1382
1383	case 'select':
1384	$subhtml = '<select id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']"' . $disabled_attr . '>';
1385
1386	foreach ( $args['options'] as $key => $label ) {
1387	$subhtml .= '
1388	<option value="' . esc_attr( $key ) . '" ' . selected( $args['value'], $key, false ) . '>' . esc_html( $label ) . '</option>';
1389	}
1390
1391	$html .= sprintf(
1392	$template,
1393	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1394	$subhtml . '</select>' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1395	);
1396	break;
1397
1398	case 'taxonomy':
1399	if ( taxonomy_exists( $args['taxonomy'] ) ) {
1400	$subhtml = wp_dropdown_categories(
1401	array(
1402	'orderby' => 'name',
1403	'order' => 'asc',
1404	'show_option_none' => __( 'Root Folder', 'responsive-lightbox' ),
1405	'show_option_all' => false,
1406	'show_count' => false,
1407	'hide_empty' => false,
1408	'option_none_value' => 0,
1409	'hierarchical' => true,
1410	'selected' => $args['value']['id'],
1411	'taxonomy' => $args['taxonomy'],
1412	'hide_if_empty' => false,
1413	'echo' => false,
1414	'id' => 'rl-' . $tab_id . '-' . $menu_item . '-' . $field,
1415	'name' => 'rl_gallery[' . $tab_id . '][' . $menu_item . '][' . $field . '][id]'
1416	)
1417	);
1418	} else
1419	$subhtml = '<select id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . '][]" ><option value="0">' . esc_html__( 'Root Folder', 'responsive-lightbox' ) . '</option></select> ';
1420
1421	if ( $disabled )
1422	$subhtml = preg_replace( '/<select /', '<select disabled="disabled" ', $subhtml, 1 );
1423
1424	if ( isset( $args['include_children'] ) && $args['include_children'] ) {
1425	$subhtml .= '<label class="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '-include-children" for="rl-' . esc_attr( $tab_id ) . '-' . esc_attr( $menu_item ) . '-' . esc_attr( $field ) . '-include-children"><input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '-include-children" type="checkbox" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . '][children]" value="true" ' . checked( $args['value']['children'], true, false ) . $disabled_attr . ' />' . esc_html__( 'Include children.', 'responsive-lightbox' ) . '</label>';
1426	}
1427
1428	$html .= sprintf(
1429	$template,
1430	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1431	$subhtml . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1432	);
1433	break;
1434
1435	case 'multiselect':
1436	$subhtml = '<select multiple="multiple" class="select2" id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" data-empty="' . (int) empty( $args['value'] ) . '" data-type="' . esc_attr( $field ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . '][]"' . $disabled_attr . '>';
1437
1438	if ( $field === 'post_term' ) {
1439	foreach ( $args['options'] as $taxanomy => $data ) {
1440	$subhtml .= '<optgroup label="' . esc_attr( $data['label'] ) . '">';
1441
1442	foreach ( $data['terms'] as $term_id => $name ) {
1443	$subhtml .= '<option value="' . esc_attr( $term_id ) . '" ' . selected( in_array( $term_id, $args['value'], false ), true, false ) . '>' . esc_html( $name ) . '</option>';
1444	}
1445
1446	$subhtml .= '</optgroup>';
1447	}
1448	} else {
1449	foreach ( $args['options'] as $key => $label ) {
1450	$subhtml .= '
1451	<option value="' . esc_attr( $key ) . '" ' . selected( in_array( $key, $args['value'], false ), true, false ) . '>' . esc_html( $label ) . '</option>';
1452	}
1453	}
1454
1455	$html .= sprintf(
1456	$template,
1457	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1458	$subhtml . '</select>' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1459	);
1460	break;
1461
1462	case 'boolean':
1463	$html .= sprintf(
1464	$template,
1465	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1466	'<label class="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" for="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '"><input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" type="checkbox" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']" value="true" ' . checked( $args['value'], true, false ) . $disabled_attr . ' />' . esc_html( $args['label'] ) . '</label>' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1467	);
1468	break;
1469
1470	case 'checkbox':
1471	$subhtml = '';
1472
1473	foreach ( $args['options'] as $key => $label ) {
1474	$subhtml .= '<label class="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field . '-' . $key ) . '" for="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field . '-' . $key ) . '"><input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field . '-' . $key ) . '" type="checkbox" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . '][' . esc_attr( $key ) . ']" value="true" ' . checked( in_array( $key, $args['value'], true ), true, false ) . $disabled_attr . ' />' . esc_html( $label ) . '</label><br />';
1475	}
1476
1477	$html .= sprintf(
1478	$template,
1479	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1480	$subhtml . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1481	);
1482	break;
1483
1484	case 'multiple':
1485	$subhtml = '';
1486
1487	foreach ( $args['fields'] as $sub_field => $sub_args ) {
1488	if ( $disabled )
1489	$sub_args['disabled'] = true;
1490	$subhtml .= $this->render_field( $sub_field, $tab_id, $menu_item, $sub_args, $gallery_id, true ) . '<br />';
1491	}
1492
1493	$html .= sprintf(
1494	$template,
1495	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1496	$subhtml . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1497	);
1498	break;
1499
1500	case 'color_picker':
1501	$html .= sprintf(
1502	$template,
1503	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1504	'<input id="rl-' . esc_attr( $tab_id . '-' . $menu_item . '-' . $field ) . '" class="color-picker" type="text" value="' . esc_attr( $args['value'] ) . '" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . ']" data-default-color="' . esc_attr( $args['default'] ) . '"' . $disabled_attr . ' />' . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1505	);
1506	break;
1507
1508	case 'media_library':
1509	$data = get_post_meta( $gallery_id, '_rl_images', true );
1510
1511	// get images
1512	if ( ( ! empty( $data['menu_item'] ) && $data['menu_item'] === 'media' ) \|\| ! ( wp_doing_ajax() && isset( $_POST['action'] ) && $_POST['action'] === 'rl-get-menu-content' ) )
1513	$images = $this->get_gallery_images( $gallery_id );
1514	else
1515	$images = [];
1516
1517	// get media item template
1518	$media_item_template = $this->get_media_item_template( $args['preview'] );
1519
1520	// media buttons
1521	$buttons_desc = '';
1522
1523	// video support?
1524	if ( rl_current_lightbox_supports( 'video' ) ) {
1525	$buttons = [ '<a href="#" class="rl-gallery-select button button-secondary">' . __( 'Select images & videos', 'responsive-lightbox' ) . '</a>' ];
1526
1527	} else {
1528	$buttons[] = '<a href="#" class="rl-gallery-select button button-secondary">' . __( 'Select images', 'responsive-lightbox' ) . '</a>';
1529	$buttons[] = '<a href="#" class="rl-gallery-select button button-disabled" disabled="true">' . __( 'Select images & videos', 'responsive-lightbox' ) . '</a>';
1530	$buttons_desc_args = [ '<a href="http://www.dfactory.co/products/fancybox-pro/" target="_blank">Fancybox Pro</a>', '<a href="http://www.dfactory.co/products/lightgallery-lightbox/" target="_blank">Lightgallery Lightbox</a>', '<a href="http://www.dfactory.co/products/lightcase-lightbox/" target="_blank">Lightcase Lightbox</a>' ];
1531	$buttons_desc = '<p class="description">' . wp_sprintf( __( 'HTML5 Videos and Embed Videos available only in %l.', 'responsive-lightbox' ), $buttons_desc_args ) . '</p>';
1532	}
1533
1534	$html .= '
1535	<td colspan="2" class="rl-colspan">
1536	<input type="hidden" class="rl-gallery-ids" name="rl_gallery[' . esc_attr( $tab_id ) . '][' . esc_attr( $menu_item ) . '][' . esc_attr( $field ) . '][ids]" value="' . esc_attr( ! empty( $args['value']['ids'] ) ? implode( ',', $args['value']['ids'] ) : '' ) . '">';
1537
1538	// embed video support?
1539	if ( rl_current_lightbox_supports( [ 'youtube', 'vimeo' ], 'OR' ) )
1540	$buttons[] = '<a href="#" class="rl-gallery-select-videos button button-secondary">' . esc_html__( 'Embed videos', 'responsive-lightbox' ) . '</a>';
1541	else
1542	$buttons[] = '<a href="#" class="rl-gallery-select-videos button button-disabled" disabled="true">' . esc_html__( 'Embed videos', 'responsive-lightbox' ) . '</a>';
1543
1544	// add buttons
1545	$html .= '
1546	<div class="rl-gallery-buttons">'
1547	. implode( '', $buttons )
1548	. $buttons_desc .
1549	'</div>';
1550
1551	$html .= '
1552	<div class="rl-gallery-content">
1553	<ul class="rl-gallery-images rl-gallery-images-media">';
1554
1555	if ( ! empty( $images ) ) {
1556	foreach ( $images as $image ) {
1557	if ( $image['id'] === 0 )
1558	$excluded_item = $image['url'];
1559	else
1560	$excluded_item = $image['id'];
1561
1562	// get image content html
1563	$html .= $this->get_gallery_preview_image_content( $image, $tab_id, $menu_item, $field, $media_item_template, $args['value']['exclude'], $excluded_item );
1564	}
1565	}
1566
1567	$html .= '
1568	</ul>
1569	</div>
1570	</td>';
1571	break;
1572
1573	case 'media_preview':
1574	$this->menu_item = $menu_item;
1575
1576	// get images
1577	$images = $this->get_gallery_images( $gallery_id );
1578
1579	// get media item template
1580	$media_item_template = $this->get_media_item_template( $args['preview'] );
1581
1582	$html .= '
1583	<td colspan="2" class="rl-colspan">
1584	<div class="rl-gallery-preview-inside">
1585	<a href="#" class="rl-gallery-update-preview button button-secondary">' . esc_html__( 'Update preview', 'responsive-lightbox' ) . '</a><span class="spinner" style="display: none;"></span>
1586	<p class="description">' . esc_html__( 'Use this button after any change of the options below to see updated gallery preview.', 'responsive-lightbox' ) . '</p>
1587	</div>
1588	<div class="rl-gallery-content">
1589	<ul class="rl-gallery-images rl-gallery-images-' . esc_attr( $menu_item ) . '">';
1590
1591	if ( ! empty( $images ) ) {
1592	foreach ( $images as $image ) {
1593	if ( empty( $image['id'] ) ) {
1594	$excluded_item = $image['url'];
1595	$image['id'] = 0;
1596	} else
1597	$excluded_item = $image['id'];
1598
1599	// get image content html
1600	$html .= $this->get_gallery_preview_image_content( $image, $tab_id, $menu_item, $field, $media_item_template, $args['value']['exclude'], $excluded_item );
1601	}
1602	}
1603
1604	$html .= '
1605	</ul>
1606	</div>';
1607
1608	if ( ! empty( $args['preview'] ) && isset( $args['preview']['pagination'] )&& $args['preview']['pagination'] )
1609	$html .= $this->get_preview_pagination();
1610
1611	$html .= '
1612	</td>';
1613	break;
1614
1615	case 'hidden':
1616	// prepare args
1617	$args['tab_id'] = $tab_id;
1618	$args['menu_item'] = $menu_item;
1619	$args['field'] = $field;
1620
1621	$html .= sprintf(
1622	$template,
1623	'',
1624	call_user_func( $args['callback'], $args )
1625	);
1626	break;
1627
1628	default:
1629	$html .= sprintf(
1630	$template,
1631	! empty( $args['title'] ) ? esc_html( $args['title'] ) : '',
1632	apply_filters( 'rl_render_gallery_field_' . $args['type'], $subhtml, $field, $tab_id, $menu_item, $args, $subfield ) . ( ! empty ( $args['description'] ) ? '<p class="description">' . wp_kses_post( $args['description'] ) . '</p>' : '' )
1633	);
1634	}
1635
1636	if ( ! $subfield )
1637	$html .= '</tr>';
1638
1639	return apply_filters( 'rl_render_gallery_field', $html, $field, $tab_id, $menu_item, $args, $subfield, $gallery_id );
1640	}
1641
1642	/**
1643	* Get preview pagination.
1644	*
1645	* @param int $current_page
1646	* @return string
1647	*/
1648	public function get_preview_pagination( $current_page = 1 ) {
1649	$page_links = [];
1650	$total_pages = $current_page + 1;
1651	$current = $current_page;
1652	$disable_first = $disable_last = $disable_prev = $disable_next = false;
1653	$current_url = 'preview_page';
1654
1655	if ( $current == 1 ) {
1656	$disable_first = true;
1657	$disable_prev = true;
1658	} elseif ( $current == 2 )
1659	$disable_first = true;
1660
1661	if ( $current == $total_pages ) {
1662	$disable_last = true;
1663	$disable_next = true;
1664	}
1665
1666	if ( $current == $total_pages - 1 )
1667	$disable_last = true;
1668
1669	if ( $disable_first )
1670	$page_links[] = '<span class="tablenav-pages-navspan button disabled" aria-hidden="true">«</span>';
1671	else {
1672	$page_links[] = sprintf(
1673	'<a class="first-page button" href="%s"><span class="screen-reader-text">%s</span><span aria-hidden="true">%s</span></a>',
1674	$current_url,
1675	esc_html__( 'First page', 'responsive-lightbox' ),
1676	'«'
1677	);
1678	}
1679
1680	if ( $disable_prev )
1681	$page_links[] = '<span class="tablenav-pages-navspan button disabled" aria-hidden="true">&lsaquo;</span>';
1682	else {
1683	$page_links[] = sprintf(
1684	'<a class="prev-page button" href="%s"><span class="screen-reader-text">%s</span><span aria-hidden="true">%s</span></a>',
1685	$current_url . '/' . max( 1, $current - 1 ),
1686	esc_html__( 'Previous page', 'responsive-lightbox' ),
1687	'&lsaquo;'
1688	);
1689	}
1690
1691	$html_current_page = sprintf(
1692	'%s<input disabled="disabled" class="current-page" id="current-page-selector" type="text" name="paged" value="%s" size="%d" aria-describedby="table-paging" /><span class="tablenav-paging-text">',
1693	'<label for="current-page-selector" class="screen-reader-text">' . esc_html__( 'Current Page', 'responsive-lightbox' ) . '</label>',
1694	$current,
1695	strlen( $total_pages )
1696	);
1697
1698	$html_total_pages = sprintf( '<span class="total-pages">%s</span>', number_format_i18n( $total_pages ) );
1699	$page_links[] = '<span class="paging-input">' . sprintf( _x( '%1$s', 'paging' ), $html_current_page, $html_total_pages ) . '</span></span>';
1700
1701	if ( $disable_next )
1702	$page_links[] = '<span class="tablenav-pages-navspan button disabled" aria-hidden="true">&rsaquo;</span>';
1703	else {
1704	$page_links[] = sprintf(
1705	'<a class="next-page button" href="%s"><span class="screen-reader-text">%s</span><span aria-hidden="true">%s</span></a>',
1706	$current_url . '/' . min( $total_pages, $current + 1 ),
1707	esc_html__( 'Next page', 'responsive-lightbox' ),
1708	'&rsaquo;'
1709	);
1710	}
1711
1712	if ( $disable_last )
1713	$page_links[] = '<span class="tablenav-pages-navspan button disabled" aria-hidden="true">»</span>';
1714	else {
1715	$page_links[] = sprintf(
1716	'<a class="last-page button" href="%s"><span class="screen-reader-text">%s</span><span aria-hidden="true">%s</span></a>',
1717	$current_url . '/' . $total_pages,
1718	esc_html__( 'Last page', 'responsive-lightbox' ),
1719	'»'
1720	);
1721	}
1722
1723	if ( $total_pages )
1724	$page_class = $total_pages < 2 ? 'one-page' : '';
1725	else
1726	$page_class = 'no-pages';
1727
1728	return '<div class="rl-gallery-preview-pagination tablenav"><div class="tablenav-pages ' . esc_attr( $page_class ) . '"><span class="pagination-links">' . join( "\n", $page_links ) . '</span></div>';
1729	}
1730
1731	/**
1732	* Sanitize field based on type. Internal use only.
1733	*
1734	* @global string $wp_version
1735	*
1736	* @param string $field Field name
1737	* @param mixed $value Field value
1738	* @param array $args Field arguments
1739	* @return mixed
1740	*/
1741	public function sanitize_field( $field, $value, $args ) {
1742	switch ( $args['type'] ) {
1743	case 'radio':
1744	case 'select':
1745	$value = array_key_exists( $value, $args['options'] ) ? $value : $args['default'];
1746	break;
1747
1748	case 'taxonomy':
1749	if ( is_array( $value ) ) {
1750	if ( isset( $value['id'] ) )
1751	$value['id'] = (int) $value['id'];
1752	else
1753	$value['id'] = 0;
1754
1755	$value['children'] = isset( $value['children'] );
1756	} else
1757	$value = $args['default'];
1758
1759	// flatten taxonomy options if needed
1760	if ( ! empty( $args['options'] ) && is_array( $args['options'] ) ) {
1761	$terms = [];
1762
1763	foreach ( $args['options'] as $option_data ) {
1764	if ( isset( $option_data['terms'] ) && is_array( $option_data['terms'] ) )
1765	$terms += $option_data['terms'];
1766	}
1767
1768	if ( ! empty( $terms ) )
1769	$args['options'] = $terms;
1770	}
1771
1772	if ( isset( $value['id'] ) && ! empty( $args['options'] ) && is_array( $args['options'] ) && ! array_key_exists( $value['id'], $args['options'] ) )
1773	$value['id'] = 0;
1774
1775	// validate term exists
1776	if ( isset( $value['id'] ) && $value['id'] ) {
1777	$term = get_term( $value['id'], $args['taxonomy'] );
1778	if ( ! is_a( $term, 'WP_Term' ) )
1779	$value['id'] = 0;
1780	}
1781	break;
1782	case 'multiselect':
1783	if ( is_array( $value ) ) {
1784	if ( $field === 'post_term' ) {
1785	$terms = [];
1786
1787	foreach ( $args['options'] as $data ) {
1788	$terms += $data['terms'];
1789	}
1790
1791	$args['options'] = $terms;
1792	}
1793
1794	$values = [];
1795
1796	foreach ( $value as $subvalue ) {
1797	if ( array_key_exists( $subvalue, $args['options'] ) )
1798	$values[] = $subvalue;
1799	}
1800
1801	$value = $values;
1802	} else
1803	$value = $args['default'];
1804	break;
1805	case 'checkbox':
1806	if ( is_array( $value ) && ! empty( $value ) ) {
1807	$sort = [];
1808
1809	foreach ( $value as $sort_key => $bool ) {
1810	if ( array_key_exists( $sort_key, $args['options'] ) )
1811	$sort[] = $sort_key;
1812	}
1813
1814	$value = $sort;
1815	} else
1816	$value = [];
1817	break;
1818
1819	case 'boolean':
1820	$value = $value === 'true';
1821	break;
1822
1823	case 'range':
1824	case 'number':
1825	$value = (int) $value;
1826
1827	// is value lower than?
1828	if ( isset( $args['min'] ) && $value < $args['min'] )
1829	$value = $args['min'];
1830
1831	// is value greater than?
1832	if ( isset( $args['max'] ) && $value > $args['max'] )
1833	$value = $args['max'];
1834	break;
1835
1836	case 'class':
1837	$value = trim( $value );
1838
1839	// more than 1 class?
1840	if ( strpos( $value, ' ' ) !== false ) {
1841	// get unique valid HTML classes
1842	$value = array_unique( array_filter( array_map( 'sanitize_html_class', explode( ' ', $value ) ) ) );
1843
1844	if ( ! empty( $value ) )
1845	$value = implode( ' ', $value );
1846	else
1847	$value = '';
1848	// single class
1849	} else
1850	$value = sanitize_html_class( $value );
1851	break;
1852
1853	case 'text':
1854	$value = trim( sanitize_text_field( $value ) );
1855	break;
1856
1857	case 'textarea':
1858	global $wp_version;
1859
1860	// WP 4.7+
1861	if ( version_compare( $wp_version, '4.7', '>=' ) )
1862	$value = trim( sanitize_textarea_field( $value ) );
1863	// _sanitize_text_fields
1864	else {
1865	$value = wp_check_invalid_utf8( $value );
1866
1867	if ( strpos( $value, '<' ) !== false ) {
1868	$value = wp_pre_kses_less_than( $value );
1869
1870	// this will strip extra whitespace for us
1871	$value = wp_strip_all_tags( $value, false );
1872
1873	// use html entities in a special case to make sure no later newline stripping stage could lead to a functional tag
1874	$value = str_replace( "<\n", "<\n", $value );
1875	}
1876
1877	$value = trim( $value );
1878	$found = false;
1879
1880	while ( preg_match('/%[a-f0-9]{2}/i', $value, $match ) ) {
1881	$value = str_replace( $match[0], '', $value );
1882	$found = true;
1883	}
1884
1885	// strip out the whitespace that may now exist after removing the octets
1886	if ( $found )
1887	$value = trim( preg_replace( '/ +/', ' ', $value ) );
1888	}
1889	break;
1890
1891	case 'color_picker':
1892	if ( preg_match( '/^#[a-f0-9]{6}$/i', $value ) !== 1 )
1893	$value = $args['default'];
1894	break;
1895
1896	case 'media_library':
1897	if ( is_array( $value ) ) {
1898	$data = $args['default'];
1899
1900	if ( rl_current_lightbox_supports( [ 'youtube', 'vimeo' ], 'OR' ) ) {
1901	$reindexed_embed = [];
1902
1903	// check embed items
1904	if ( array_key_exists( 'embed', $value ) && is_array( $value['embed'] ) && ! empty( $value['embed'] ) ) {
1905	$copy = $value['embed'];
1906
1907	$index = 0;
1908
1909	foreach ( $value['embed'] as $embed_id => $embed_data ) {
1910	// check url
1911	if ( ! array_key_exists( 'url', $embed_data ) ) {
1912	unset( $copy[$embed_id] );
1913
1914	continue;
1915	} else
1916	$copy[$embed_id]['url'] = esc_url_raw( $embed_data['url'] );
1917
1918	// check width
1919	if ( ! array_key_exists( 'width', $embed_data ) )
1920	$copy[$embed_id]['width'] = 0;
1921	else
1922	$copy[$embed_id]['width'] = (int) $embed_data['width'];
1923
1924	// check height
1925	if ( ! array_key_exists( 'height', $embed_data ) )
1926	$copy[$embed_id]['height'] = 0;
1927	else
1928	$copy[$embed_id]['height'] = (int) $embed_data['height'];
1929
1930	// check thumbnail url
1931	if ( empty( $embed_data['thumbnail_url'] ) )
1932	$copy[$embed_id]['thumbnail_url'] = '';
1933	else
1934	$copy[$embed_id]['thumbnail_url'] = esc_url_raw( $embed_data['thumbnail_url'] );
1935
1936	// check thumbnail width
1937	if ( ! array_key_exists( 'thumbnail_width', $embed_data ) )
1938	$copy[$embed_id]['thumbnail_width'] = 0;
1939	else
1940	$copy[$embed_id]['thumbnail_width'] = (int) $embed_data['thumbnail_width'];
1941
1942	// check thumbnail height
1943	if ( ! array_key_exists( 'thumbnail_height', $embed_data ) )
1944	$copy[$embed_id]['thumbnail_height'] = 0;
1945	else
1946	$copy[$embed_id]['thumbnail_height'] = (int) $embed_data['thumbnail_height'];
1947
1948	// check title
1949	if ( empty( $embed_data['title'] ) )
1950	$copy[$embed_id]['title'] = '';
1951	else
1952	$copy[$embed_id]['title'] = trim( sanitize_text_field( $embed_data['title'] ) );
1953
1954	// check caption
1955	if ( empty( $embed_data['caption'] ) )
1956	$copy[$embed_id]['caption'] = '';
1957	else
1958	$copy[$embed_id]['caption'] = trim( sanitize_textarea_field( $embed_data['caption'] ) );
1959
1960	// check date
1961	if ( empty( $embed_data['date'] ) )
1962	$copy[$embed_id]['date'] = '';
1963	else
1964	$copy[$embed_id]['date'] = date( 'Y-m-d H:i:s', strtotime( $embed_data['date'] ) );
1965
1966	// new embed id
1967	$new_id = 'e' . $index;
1968
1969	// add embed data
1970	$data['embed'][$new_id] = $copy[$embed_id];
1971	$data['embed'][$new_id]['id'] = $new_id;
1972
1973	// add special id
1974	$reindexed_embed[$embed_id] = 'em' . $index++;
1975	}
1976
1977	// last replacement is 'em' to avoid replacing same embed ids
1978	$reindexed_embed['em'] = 'e';
1979
1980	// prepare embed additional data
1981	$atts_args = [
1982	'embed_keys' => array_keys( $data['embed'] ),
1983	'providers' => [ 'youtube', 'vimeo' ]
1984	];
1985	} else
1986	$atts_args = [];
1987	} else
1988	$atts_args = [];
1989
1990
1991	// check ids
1992	if ( array_key_exists( 'ids', $value ) ) {
1993	// prepare ids
1994	$ids = (string) trim( $value['ids'] );
1995
1996	if ( $ids !== '' ) {
1997	// reindex embed
1998	if ( ! empty( $reindexed_embed ) )
1999	$ids = str_replace( array_keys( $reindexed_embed ), array_values( $reindexed_embed ), $ids );
2000
2001	// get unique and non empty attachment ids only
2002	$data['ids'] = $this->check_attachments( array_unique( array_filter( explode( ',', $ids ) ) ), $atts_args );
2003	} else
2004	$data['ids'] = [];
2005	}
2006
2007	// check excluded items
2008	if ( array_key_exists( 'exclude', $value ) && is_array( $value['exclude'] ) && ! empty( $value['exclude'] ) ) {
2009	// reindex embed
2010	if ( ! empty( $reindexed_embed ) )
2011	$value['exclude'] = explode( ',', str_replace( array_keys( $reindexed_embed ), array_values( $reindexed_embed ), implode( ',', array_filter( $value['exclude'] ) ) ) );
2012
2013	// get unique and non empty attachment ids only
2014	$data['exclude'] = $this->check_attachments( array_unique( array_filter( $value['exclude'] ) ), $atts_args );
2015	}
2016
2017	$value = $data;
2018	} else
2019	$value = $args['default'];
2020	break;
2021
2022	case 'media_preview':
2023	if ( is_array( $value ) ) {
2024	$data = $args['default'];
2025
2026	// check excluded items
2027	if ( array_key_exists( 'exclude', $value ) && is_array( $value['exclude'] ) && ! empty( $value['exclude'] ) ) {
2028	$ids = $strings = [];
2029
2030	foreach ( $value['exclude'] as $exclude_item ) {
2031	$item = trim( $exclude_item );
2032
2033	if ( is_numeric( $item ) )
2034	$ids[] = (int) $item;
2035	elseif ( $item !== '' )
2036	$strings[] = $item;
2037	}
2038
2039	if ( ! empty( $ids ) ) {
2040	// get unique and non empty attachment ids only
2041	$ids = $this->check_attachments( array_unique( array_filter( $ids ) ) );
2042	}
2043
2044	$data['exclude'] = $ids + $strings;
2045	}
2046
2047	$value = $data;
2048	} else
2049	$value = $args['default'];
2050	}
2051
2052	return apply_filters( 'rl_sanitize_gallery_field', $value, $args );
2053	}
2054
2055	/**
2056	* Sanitize set of fields.
2057	*
2058	* @param array $items Fields
2059	* @param array $data POST data
2060	* @param string $tab_id Gallery tab
2061	* @param string $menu_item Gallery menu item
2062	* @return array
2063	*/
2064	public function sanitize_fields( $items, $data, $tab_id, $menu_item ) {
2065	$safedata = [];
2066
2067	foreach ( $items as $field => $item ) {
2068	// skip this field
2069	if ( isset( $item['save'] ) && ! $item['save'] )
2070	continue;
2071
2072	// available field?
2073	if ( isset( $data[$tab_id], $data[$tab_id][$menu_item], $data[$tab_id][$menu_item][$field] ) )
2074	$safedata[$tab_id][$menu_item][$field] = $this->sanitize_field( $field, $data[$tab_id][$menu_item][$field], $item );
2075	// boolean field?
2076	elseif ( $item['type'] === 'boolean' )
2077	$safedata[$tab_id][$menu_item][$field] = false;
2078	// multiple fields?
2079	elseif ( $item['type'] === 'multiple' ) {
2080	foreach ( $item['fields'] as $subfield => $subitem ) {
2081	// available subfield?
2082	if ( isset( $data[$tab_id], $data[$tab_id][$menu_item], $data[$tab_id][$menu_item][$subfield] ) )
2083	$safedata[$tab_id][$menu_item][$subfield] = $this->sanitize_field( $subfield, $data[$tab_id][$menu_item][$subfield], $subitem );
2084	// boolean subfield?
2085	elseif ( $subitem['type'] === 'boolean' )
2086	$safedata[$tab_id][$menu_item][$subfield] = false;
2087	// any other case
2088	else
2089	$safedata[$tab_id][$menu_item][$subfield] = $subitem['default'];
2090	}
2091	// any other case
2092	} else
2093	$safedata[$tab_id][$menu_item][$field] = $item['default'];
2094	}
2095
2096	return $safedata;
2097	}
2098
2099	/**
2100	* Add menu tabs after the post title.
2101	*
2102	* @global array $wp_meta_boxes
2103	*
2104	* @param object $post Post object
2105	* @return void
2106	*/
2107	public function after_title_nav_menu( $post ) {
2108	if ( $post->post_type !== 'rl_gallery' )
2109	return;
2110
2111	global $wp_meta_boxes;
2112
2113	// check active tab
2114	$active_tab = isset( $_GET['rl_active_tab'] ) ? sanitize_key( $_GET['rl_active_tab'] ) : '';
2115	$active_tab = ! empty( $active_tab ) && array_key_exists( $active_tab, $this->tabs ) ? $active_tab : 'images';
2116
2117	echo '
2118	<h2 class="nav-tab-wrapper">';
2119
2120	foreach ( $this->tabs as $key => $data ) {
2121	echo '
2122	<a id="rl-gallery-tab-' . esc_attr( $key ) . '" class="rl-gallery-tab nav-tab' . ( $key === $active_tab ? ' nav-tab-active' : '' ) . '" href="#' . esc_attr( $key ) . '">' . esc_html( $data['label'] ) . '</a>';
2123	}
2124
2125	echo '
2126	</h2>';
2127
2128	do_meta_boxes( $post->post_type, 'responsive_lightbox_metaboxes', $post );
2129
2130	unset( $wp_meta_boxes[$post->post_type]['responsive_lightbox_metaboxes'] );
2131	}
2132
2133	/**
2134	* Add class to hide metabox.
2135	*
2136	* @param array $classes
2137	* @return array
2138	*/
2139	public function hide_metabox( $classes ) {
2140	$classes[] = 'rl-metabox-content';
2141	$classes[] = 'rl-hide-metabox';
2142
2143	return $classes;
2144	}
2145
2146	/**
2147	* Add class to display the metabox.
2148	*
2149	* @param array $classes
2150	* @return array
2151	*/
2152	function display_metabox( $classes ) {
2153	$classes[] = 'rl-metabox-content';
2154	$classes[] = 'rl-display-metabox';
2155
2156	return $classes;
2157	}
2158
2159	/**
2160	* Add active tab to post redirect destination URL.
2161	*
2162	* @param string $location Destination URL
2163	* @return string
2164	*/
2165	function add_active_tab( $location ) {
2166	// check active tab
2167	$active_tab = isset( $_POST['rl_active_tab'] ) ? sanitize_key( $_POST['rl_active_tab'] ) : '';
2168
2169	return add_query_arg( 'rl_active_tab', ! empty( $active_tab ) && array_key_exists( $active_tab, $this->tabs ) ? $active_tab : 'images', $location );
2170	}
2171
2172	/**
2173	* Add metaboxes.
2174	*
2175	* @return void
2176	*/
2177	public function add_meta_boxes() {
2178	// check active tab
2179	$active_tab = isset( $_GET['rl_active_tab'] ) ? sanitize_key( $_GET['rl_active_tab'] ) : '';
2180	$active_tab = ! empty( $active_tab ) && array_key_exists( $active_tab, $this->tabs ) ? $active_tab : 'images';
2181
2182	// normal metaboxes
2183	foreach ( $this->tabs as $key => $args ) {
2184	if ( $key === 'images' )
2185	$new_args = $args + array( 'tab_id' => $key, 'active_tab' => $active_tab );
2186	else
2187	$new_args = $args + array( 'tab_id' => $key );
2188
2189	// handle metabox class
2190	if ( $active_tab === $key )
2191	add_filter( 'postbox_classes_rl_gallery_responsive-gallery-' . $key, array( $this, 'display_metabox' ) );
2192	else
2193	add_filter( 'postbox_classes_rl_gallery_responsive-gallery-' . $key, array( $this, 'hide_metabox' ) );
2194
2195	add_meta_box( 'responsive-gallery-' . $key, sprintf( esc_html__( 'Gallery %s', 'responsive-lightbox' ), $args['label'] ), array( $this, 'add_metabox' ), 'rl_gallery', 'responsive_lightbox_metaboxes', 'high', $new_args );
2196	}
2197
2198	// side metaboxes
2199	add_meta_box( 'responsive-gallery-shortcode', esc_html__( 'Gallery Code', 'responsive-lightbox' ), array( $this, 'shortcode_metabox' ), 'rl_gallery', 'side', 'core' );
2200	}
2201
2202	/**
2203	* Add single metabox.
2204	*
2205	* @param object $post Post object
2206	* @param array $callback_args Arguments
2207	* @return void
2208	*/
2209	public function add_metabox( $post, $callback_args ) {
2210	$html = $callback_args['args']['tab_id'] === 'images' ? '<input type="hidden" name="rl_active_tab" value="' . esc_attr( $callback_args['args']['active_tab'] ) . '" />' : '';
2211
2212	// default menu item
2213	$menu_item = 'options';
2214
2215	// get tab data
2216	$data = get_post_meta( $post->ID, '_rl_' . $callback_args['args']['tab_id'], true );
2217
2218	if ( ! is_array( $data ) )
2219	$data = [];
2220
2221	if ( $callback_args['args']['tab_id'] === 'design' && ! empty( $data['menu_item'] ) && is_array( $data[$data['menu_item']] ) ) {
2222	$design_data = $data[$data['menu_item']];
2223
2224	// remove show_title
2225	if ( isset( $design_data['show_title'] ) ) {
2226	if ( ! isset( $design_data['design_show_title'] ) )
2227	$design_data['design_show_title'] = $design_data['show_title'];
2228
2229	unset( $design_data['show_title'] );
2230	}
2231
2232	// remove show_caption
2233	if ( isset( $design_data['show_caption'] ) ) {
2234	if ( ! isset( $design_data['design_show_caption'] ) )
2235	$design_data['design_show_caption'] = $design_data['show_caption'];
2236
2237	unset( $design_data['show_caption'] );
2238	}
2239
2240	$data[$data['menu_item']] = $design_data;
2241	}
2242
2243	// maybe add description
2244	$html .= ! empty( $callback_args['args']['description'] ) ? '<p class="rl-gallery-tab-description">' . esc_html( $callback_args['args']['description'] ) . '</p>' : '';
2245
2246	// get main instance
2247	$rl = Responsive_Lightbox();
2248
2249	// maybe add menu
2250	if ( ! empty( $callback_args['args']['menu_items'] ) ) {
2251	// get selected menu item
2252	$menu_item = ! empty( $data['menu_item'] ) && in_array( $data['menu_item'], array_keys( $callback_args['args']['menu_items'] ) ) ? $data['menu_item'] : key( $callback_args['args']['menu_items'] );
2253
2254	$html .= '
2255	<div class="rl-gallery-tab-menu rl-gallery-tab-menu-' . esc_attr( $callback_args['args']['tab_id'] ) . '">';
2256
2257	foreach ( $callback_args['args']['menu_items'] as $menu_key => $menu_label ) {
2258	// disable select for remote library if needed
2259	if ( $menu_key === 'remote_library' && ! $rl->options['remote_library']['active'] ) {
2260	$title = __( 'Remote Library is disabled. Enable it in the settings.', 'responsive-lightbox' );
2261	$disabled = true;
2262	// disable select for media folders if needed
2263	} elseif ( $menu_key === 'folders' && ! $rl->options['folders']['active'] ) {
2264	$title = __( 'Media Folders are disabled. Enable it in the settings.', 'responsive-lightbox' );
2265	$disabled = true;
2266	// other menu items
2267	} else {
2268	$title = '';
2269	$disabled = false;
2270	}
2271
2272	$html .= '
2273	<label' . ( $title !== '' ? ' title="' . esc_attr( $title ). '"' : '' ) . '><input type="radio" class="rl-gallery-tab-menu-item" name="rl_gallery[' . esc_attr( $callback_args['args']['tab_id'] ) . '][menu_item]" value="' . esc_attr( $menu_key ) . '" ' . checked( $menu_item, $menu_key, false ) . ' ' . disabled( $disabled, true, false ) . ' />' . esc_html( $menu_label ) . ( $callback_args['args']['tab_id'] === 'config' && $menu_key === 'default' ? ' (' . esc_html( $this->tabs['config']['menu_items'][$rl->options['settings']['builder_gallery']] ) . ')' : '' ) . '</label>';
2274	}
2275
2276	$html .= '
2277	<span class="spinner" style="display: none;"></span>
2278	</div>';
2279	}
2280
2281	$class = '';
2282
2283	// disable gallery images content for remote library or media folders if needed
2284	if ( $callback_args['args']['tab_id'] === 'images' && ( ( $menu_item === 'remote_library' && ! $rl->options['remote_library']['active'] ) \|\| ( $menu_item === 'folders' && ! $rl->options['folders']['active'] ) ) )
2285	$class = 'rl-loading-content';
2286
2287	$html .= '
2288	<div class="rl-gallery-tab-content rl-gallery-tab-content-' . esc_attr( $callback_args['args']['tab_id'] ) . ( $class !== '' ? ' ' . esc_attr( $class ) : '' ) . '">';
2289
2290	$html .= ! empty( $callback_args['args']['callback'] ) && is_callable( $callback_args['args']['callback'] ) ? call_user_func( $callback_args['args']['callback'], $callback_args['args']['tab_id'], $data, $menu_item, $post->ID ) : $this->get_metabox_content( $callback_args['args']['tab_id'], $data, $menu_item, $post->ID );
2291
2292	$html .= '
2293	</div>';
2294
2295	// get allowed html
2296	$allowed_html = wp_kses_allowed_html( 'post' );
2297
2298	$allowed_html['a']['disabled'] = [];
2299	$allowed_html['span']['data-select2-id'] = [];
2300	$allowed_html['input'] = [
2301	'type' => [],
2302	'name' => [],
2303	'value' => [],
2304	'class' => [],
2305	'id' => [],
2306	'size' => [],
2307	'checked' => [],
2308	'disabled' => [],
2309	'aria-describedby' => [],
2310	'min' => [],
2311	'max' => [],
2312	'step' => [],
2313	'data-default-color' => []
2314	];
2315	$allowed_html['select'] = [
2316	'name' => [],
2317	'id' => [],
2318	'class' => [],
2319	'multiple' => [],
2320	'data-empty' => [],
2321	'data-type' => [],
2322	'aria-hidden' => []
2323	];
2324	$allowed_html['option'] = [
2325	'value' => [],
2326	'selected' => [],
2327	'class' => []
2328	];
2329	$allowed_html['optgroup'] = [
2330	'label' => []
2331	];
2332
2333	add_filter( 'safe_style_css', [ $this, 'allow_style_attributes' ] );
2334
2335	echo wp_kses( $html, $allowed_html );
2336
2337	remove_filter( 'safe_style_css', [ $this, 'allow_style_attributes' ] );
2338	}
2339
2340	/**
2341	* Add new properties to style safe list.
2342	*
2343	* @param array $styles
2344	* @return array
2345	*/
2346	public function allow_style_attributes( $styles ) {
2347	$styles[] = 'display';
2348	$styles[] = 'visibility';
2349
2350	return $styles;
2351	}
2352
2353	/**
2354	* Get single metabox content.
2355	*
2356	* @param string $tab_id Tab ID
2357	* @param array $data Metabox data
2358	* @param string $menu_item Specified menu item
2359	* @param int $gallery_id Gallery ID
2360	* @return string
2361	*/
2362	public function get_metabox_content( $tab_id, $data, $menu_item, $gallery_id = 0 ) {
2363	$html = '
2364	<div class="rl-gallery-tab-inside rl-gallery-tab-inside-' . esc_attr( $tab_id ) . '-' . esc_attr( $menu_item ) . '">
2365	<table class="form-table">';
2366
2367	switch ( $tab_id ) {
2368	case 'config':
2369	// get main instance
2370	$rl = Responsive_Lightbox();
2371
2372	// get default gallery fields
2373	$default_gallery = $rl->frontend->get_default_gallery_fields();
2374
2375	// assign settings and defaults
2376	$settings = $this->get_gallery_settings_data();
2377	$defaults = $rl->defaults;
2378	$default_gallery_type = $rl->options['settings']['builder_gallery'];
2379	$default_gallery_key = $default_gallery_type . '_gallery';
2380	$default_gallery_fields = [];
2381	$builder_gallery_fields = [];
2382	$disabled_fields = [];
2383	$global_settings = [];
2384	$disabled_notice = '';
2385	$disabled_notice_output = false;
2386
2387	// ensure default_gallery exists in settings for validation check at line 2356
2388	if ( ! array_key_exists( 'default_gallery', $settings ) )
2389	$settings['default_gallery'] = [];
2390	// always use canonical universal fields source
2391	$default_gallery_fields = $default_gallery;
2392	if ( ! empty( $settings[$default_gallery_key]['fields'] ) )
2393	$builder_gallery_fields = $settings[$default_gallery_key]['fields'];
2394	elseif ( $rl->settings && method_exists( $rl->settings, 'get_setting_fields' ) ) {
2395	$legacy_fields = $rl->settings->get_setting_fields( $default_gallery_key );
2396	if ( ! empty( $legacy_fields ) && is_array( $legacy_fields ) )
2397	$builder_gallery_fields = $legacy_fields;
2398	}
2399	if ( ! empty( $rl->options[$default_gallery_key] ) && is_array( $rl->options[$default_gallery_key] ) )
2400	$global_settings = $rl->options[$default_gallery_key];
2401
2402	// assign default values
2403	foreach ( $default_gallery as $field => $field_args ) {
2404	$defaults['default_gallery'][$field] = $field_args['default'];
2405	}
2406
2407	// valid gallery?
2408	if ( array_key_exists( $menu_item . '_gallery', $settings ) && array_key_exists( $menu_item . '_gallery', $defaults ) ) {
2409	if ( $menu_item === 'default' ) {
2410	$fields = $default_gallery_fields;
2411
2412	if ( ! empty( $builder_gallery_fields ) ) {
2413	$fields = $rl->frontend->get_unique_fields( $default_gallery_fields, $builder_gallery_fields );
2414
2415	foreach ( $defaults[$default_gallery_key] as $field => $default_value ) {
2416	if ( ! array_key_exists( $field, $defaults['default_gallery'] ) )
2417	$defaults['default_gallery'][$field] = $default_value;
2418	}
2419	}
2420
2421	$disabled_fields = array_diff_key( $fields, $default_gallery_fields );
2422
2423	if ( ! empty( $disabled_fields ) ) {
2424	$settings_menu = '';
2425	$settings_tab_label = '';
2426	$settings_section = '';
2427
2428	if ( ! empty( $rl->settings_api ) && method_exists( $rl->settings_api, 'get_pages' ) ) {
2429	$settings_pages = $rl->settings_api->get_pages();
2430	if ( ! empty( $settings_pages['settings'] ) ) {
2431	$settings_menu = ! empty( $settings_pages['settings']['menu_title'] ) ? $settings_pages['settings']['menu_title'] : '';
2432	if ( ! empty( $settings_pages['settings']['tabs']['gallery']['label'] ) )
2433	$settings_tab_label = $settings_pages['settings']['tabs']['gallery']['label'];
2434	}
2435	}
2436	if ( ! empty( $settings[$default_gallery_key]['sections'] ) && is_array( $settings[$default_gallery_key]['sections'] ) ) {
2437	$first_section = reset( $settings[$default_gallery_key]['sections'] );
2438	if ( ! empty( $first_section['title'] ) )
2439	$settings_section = $first_section['title'];
2440	}
2441
2442	if ( $settings_section === '' && ! empty( $this->tabs['config']['menu_items'][$default_gallery_type] ) )
2443	$settings_section = $this->tabs['config']['menu_items'][$default_gallery_type];
2444
2445	if ( $settings_section === '' )
2446	$settings_section = ucwords( str_replace( '_', ' ', $default_gallery_key ) );
2447
2448	$settings_url = admin_url( 'admin.php?page=responsive-lightbox-settings&tab=gallery' );
2449	if ( $settings_menu === '' )
2450	$settings_menu = __( 'Lightbox', 'responsive-lightbox' );
2451	if ( $settings_tab_label === '' )
2452	$settings_tab_label = __( 'Galleries', 'responsive-lightbox' );
2453
2454	$disabled_notice = '<tr class="rl-gallery-field-disabled-notice"><td colspan="2"><div class="rl-gallery-disabled-notice"><p>'
2455	. wp_kses_post( sprintf( __( 'Settings below are controlled globally in %1$s → %2$s → %3$s.', 'responsive-lightbox' ), esc_html( $settings_menu ), esc_html( $settings_tab_label ), esc_html( $settings_section ) ) )
2456	. '</p><a class="rl-gallery-disabled-notice-link" href="' . esc_url( $settings_url ) . '">'
2457	. esc_html( sprintf( __( 'Edit Global %s Settings ->', 'responsive-lightbox' ), $settings_section ) ) . '</a></div></td></tr>';
2458	}
2459	} else {
2460	$fields = $rl->frontend->get_unique_fields( $default_gallery_fields, $settings[$menu_item . '_gallery']['fields'] );
2461
2462	// add default gallery default values
2463	foreach ( $default_gallery as $field => $field_args ) {
2464	$defaults[$menu_item . '_gallery'][$field] = $field_args['default'];
2465	}
2466	}
2467
2468	foreach ( $fields as $field => $args ) {
2469	$is_disabled = ( $menu_item === 'default' && ! isset( $default_gallery_fields[$field] ) );
2470
2471	if ( $is_disabled && ! $disabled_notice_output && $disabled_notice !== '' ) {
2472	$html .= $disabled_notice;
2473	$disabled_notice_output = true;
2474	}
2475
2476	if ( $args['type'] === 'multiple' ) {
2477	$new_args = $args;
2478
2479	foreach ( $args['fields'] as $subfield => $subargs ) {
2480	$value = isset( $data[$menu_item], $data[$menu_item][$subfield] ) ? $data[$menu_item][$subfield] : $defaults[$menu_item . '_gallery'][$subfield];
2481
2482	if ( $is_disabled && isset( $global_settings[$subfield] ) )
2483	$value = $global_settings[$subfield];
2484
2485	$new_args['fields'][$subfield] = $subargs + array(
2486	'value' => $value,
2487	'default' => $defaults[$menu_item . '_gallery'][$subfield]
2488	);
2489	}
2490	} else {
2491	$value = isset( $data[$menu_item], $data[$menu_item][$field] ) ? $data[$menu_item][$field] : $defaults[$menu_item . '_gallery'][$field];
2492
2493	if ( $is_disabled && isset( $global_settings[$field] ) )
2494	$value = $global_settings[$field];
2495
2496	$new_args = $args + array(
2497	'value' => $value,
2498	'default' => $defaults[$menu_item . '_gallery'][$field]
2499	);
2500	}
2501
2502	if ( $is_disabled )
2503	$new_args['disabled'] = true;
2504
2505	$html .= $this->render_field( $field, $tab_id, $menu_item, $new_args, $gallery_id );
2506	}
2507	// just in case ajax would fail
2508	} else
2509	$html .= '<p>' . esc_html__( 'No data', 'responsive-lightbox' ) . '</p>';
2510	break;
2511
2512	default:
2513	foreach ( $this->fields[$tab_id][$menu_item] as $field => $args ) {
2514	// was this field stored in a database?
2515	if ( isset( $args['save'] ) && ! $args['save'] )
2516	$new_args = $args;
2517	elseif ( $args['type'] === 'multiple' ) {
2518	$new_args = $args;
2519
2520	foreach ( $args['fields'] as $subfield => $subargs ) {
2521	$new_args['fields'][$subfield] = $subargs + array( 'value' => isset( $data[$menu_item], $data[$menu_item][$subfield] ) ? $data[$menu_item][$subfield] : $subargs['default'] );
2522	}
2523	} else
2524	$new_args = $args + array( 'value' => isset( $data[$menu_item], $data[$menu_item][$field] ) ? $data[$menu_item][$field] : $args['default'] );
2525
2526	// media preview?
2527	// if ( $tab_id === 'images' && $menu_item === 'featured' && $field === 'attachments' && $args['type'] === 'media_preview' )
2528	// $new_args['subfields'] = $data['featured'];
2529
2530	$html .= $this->render_field( $field, $tab_id, $menu_item, $new_args, $gallery_id );
2531	}
2532	}
2533
2534	$html .= '
2535	</table>
2536	</div>';
2537
2538	return apply_filters( 'rl_gallery_tab_content', $html, $tab_id, $data, $menu_item );
2539	}
2540
2541	/**
2542	* Get gallery settings data from Settings API with legacy fallback.
2543	*
2544	* @return array
2545	*/
2546	private function get_gallery_settings_data() {
2547	$settings = [];
2548	$settings_data = apply_filters( 'rl_settings_data', [] );
2549
2550	if ( is_array( $settings_data ) ) {
2551	foreach ( $settings_data as $setting_key => $setting ) {
2552	$fields = $this->get_settings_fields_from_data( $setting );
2553
2554	if ( ! empty( $fields ) ) {
2555	$settings[$setting_key]['fields'] = $fields;
2556	}
2557	}
2558	}
2559
2560	$rl = Responsive_Lightbox();
2561	$legacy_settings = isset( $rl->settings->settings ) && is_array( $rl->settings->settings ) ? $rl->settings->settings : [];
2562
2563	if ( empty( $settings ) )
2564	return $legacy_settings;
2565
2566	foreach ( $legacy_settings as $setting_key => $setting ) {
2567	if ( empty( $settings[$setting_key] ) && ! empty( $setting['fields'] ) ) {
2568	$settings[$setting_key] = $setting;
2569	}
2570	}
2571
2572	return $settings;
2573	}
2574
2575	/**
2576	* Extract fields from Settings API data.
2577	*
2578	* @param array $setting
2579	* @return array
2580	*/
2581	private function get_settings_fields_from_data( $setting ) {
2582	$fields = [];
2583
2584	if ( ! empty( $setting['fields'] ) && is_array( $setting['fields'] ) ) {
2585	foreach ( $setting['fields'] as $field_key => $field ) {
2586	if ( $this->is_valid_gallery_field( $field ) )
2587	$fields[$field_key] = $field;
2588	}
2589	}
2590
2591	if ( ! empty( $setting['sections'] ) && is_array( $setting['sections'] ) ) {
2592	foreach ( $setting['sections'] as $section ) {
2593	if ( empty( $section['fields'] ) \|\| ! is_array( $section['fields'] ) )
2594	continue;
2595
2596	foreach ( $section['fields'] as $field_key => $field ) {
2597	if ( isset( $fields[$field_key] ) )
2598	continue;
2599
2600	if ( $this->is_valid_gallery_field( $field ) )
2601	$fields[$field_key] = $field;
2602	}
2603	}
2604	}
2605
2606	return $fields;
2607	}
2608
2609	/**
2610	* Validate gallery field definition.
2611	*
2612	* @param mixed $field
2613	* @return bool
2614	*/
2615	private function is_valid_gallery_field( $field ) {
2616	if ( ! is_array( $field ) )
2617	return false;
2618
2619	if ( empty( $field['type'] ) )
2620	return false;
2621
2622	if ( $field['type'] === 'multiple' && empty( $field['fields'] ) )
2623	return false;
2624
2625	return true;
2626	}
2627
2628	/**
2629	* Update number of gallery images when attachment is deleted.
2630	*
2631	* @param int $attachment_id
2632	* @return void
2633	*/
2634	public function delete_attachment( $attachment_id ) {
2635	//@TODO
2636	}
2637
2638	/**
2639	* Get number of gallery images.
2640	*
2641	* @param int $gallery_id
2642	* @return int
2643	*/
2644	public function get_gallery_images_number( $gallery_id ) {
2645	return count( $this->get_gallery_images( $gallery_id, [ 'count_images' => true, 'preview' => false, 'exclude' => true ] ) );
2646	}
2647
2648	/**
2649	* Get gallery images.
2650	*
2651	* @global string $pagenow
2652	*
2653	* @param int $gallery_id Gallery ID
2654	* @param array $args Gallery arguments
2655	* @return array
2656	*/
2657	public function get_gallery_images( $gallery_id = 0, $args = [] ) {
2658	$images = [];
2659	$excluded = [];
2660
2661	// get main instance
2662	$rl = Responsive_Lightbox();
2663
2664	// get args
2665	$defaults = array(
2666	'count_images' => false,
2667	'exclude' => false,
2668	'posts_per_page' => -1,
2669	'images_per_page' => 0,
2670	'page' => 1,
2671	'limit' => 0,
2672	'nopaging' => true,
2673	'image_size' => 'large',
2674	'thumbnail_size' => 'thumbnail',
2675	'pagination_type' => 'paged',
2676	'pagination_position' => 'bottom',
2677	'orderby' => 'menu_order',
2678	'order' => 'asc',
2679	'preview' => is_admin(),
2680	'preview_type' => 'update',
2681	'preview_page' => 1,
2682	'preview_per_page' => 20,
2683	'taxonomy' => $rl->folders->get_active_taxonomy(),
2684	'folder' => array(
2685	'id' => 0,
2686	'children' => null // do not change!
2687	)
2688	);
2689
2690	// parse arguments
2691	$args = wp_parse_args( apply_filters( 'rl_get_gallery_images_args', $args, $gallery_id ), $defaults );
2692
2693	// disable counting mode
2694	if ( $args['preview'] )
2695	$args['count_images'] = false;
2696
2697	// sanitize args
2698	$args['exclude'] = (bool) ! empty( $args['exclude'] );
2699	$args['posts_per_page'] = ! empty( $args['posts_per_page'] ) ? (int) $args['posts_per_page'] : -1;
2700	$args['nopaging'] = (bool) ! empty( $args['nopaging'] );
2701
2702	// check gallery post type
2703	$valid_gallery_type = ( get_post_type( $gallery_id ) === 'rl_gallery' );
2704
2705	// is it rl_gallery? skip when counting mode is enabled
2706	if ( $valid_gallery_type && ! $args['count_images'] ) {
2707	$paging = get_post_meta( $gallery_id, '_rl_paging', true );
2708
2709	if ( isset( $paging['menu_item'] ) ) {
2710	$pagination = $paging[$paging['menu_item']];
2711
2712	if ( $pagination['pagination'] ) {
2713	$args['nopaging'] = false;
2714	$args['images_per_page'] = $pagination['images_per_page'];
2715	$args['pagination_type'] = $pagination['pagination_type'];
2716
2717	// infinite type?
2718	if ( $args['pagination_type'] === 'infinite' )
2719	$args['pagination_position'] = 'bottom';
2720	else
2721	$args['pagination_position'] = $pagination['pagination_position'];
2722	} else
2723	$args['nopaging'] = true;
2724	}
2725	}
2726
2727	global $pagenow;
2728
2729	// is it preview?
2730	if ( ( in_array( $pagenow, array( 'post.php', 'post-new.php' ), true ) && $gallery_id ) \|\| ( isset( $_POST['action'] ) && $_POST['action'] === 'rl-get-preview-content' ) \|\| ( wp_doing_ajax() && isset( $_POST['action'] ) && ( $_POST['action'] === 'rl-post-gallery-preview' \|\| $_POST['action'] === 'rl-get-menu-content' ) ) )
2731	$args['images_per_page'] = 0;
2732
2733	if ( isset( $_GET['rl_page'] ) )
2734	$args['page'] = (int) $_GET['rl_page'];
2735	else
2736	$args['page'] = (int) $args['page'];
2737
2738	// is it rl_gallery?
2739	if ( $valid_gallery_type ) {
2740	// no need order in counting mode
2741	if ( ! $args['count_images'] ) {
2742	// get config metadata
2743	$config_meta = get_post_meta( $gallery_id, '_rl_config', true );
2744
2745	// config order
2746	if ( isset( $config_meta['menu_item'] ) ) {
2747	$config = $config_meta[$config_meta['menu_item']];
2748
2749	$args['orderby'] = $config['orderby'];
2750	$args['order'] = $config['order'];
2751	}
2752	}
2753
2754	// get images metadata
2755	$data = get_post_meta( $gallery_id, '_rl_images', true );
2756
2757	// array?
2758	if ( ! is_array( $data ) )
2759	$data = [];
2760
2761	// get menu item
2762	if ( ! empty( $this->menu_item ) )
2763	$menu_item = $this->menu_item;
2764	elseif ( array_key_exists( 'menu_item', $data ) )
2765	$menu_item = $data['menu_item'];
2766	else
2767	$menu_item = 'media';
2768
2769	// valid data?
2770	if ( ! array_key_exists( $menu_item, $data ) )
2771	$data[$menu_item] = [];
2772
2773	if ( $args['preview'] && $this->fields['images'][$menu_item]['attachments']['preview']['pagination'] ) {
2774	if ( isset( $args['preview_page'] ) )
2775	$args['preview_page'] = (int) $args['preview_page'];
2776	else
2777	$args['preview_page'] = 1;
2778
2779	$args['preview_per_page'] = (int) $args['preview_per_page'];
2780	}
2781
2782	switch ( $menu_item ) {
2783	case 'media':
2784	// check embed data
2785	if ( ! empty( $data[$menu_item]['attachments']['embed'] ) ) {
2786	$atts_args = [
2787	'embed_keys' => array_keys( $data[$menu_item]['attachments']['embed'] ),
2788	'providers' => [ 'youtube', 'vimeo' ]
2789	];
2790	} else
2791	$atts_args = [];
2792
2793	// get attachment ids
2794	$attachments = ! empty( $data[$menu_item]['attachments']['ids'] ) ? $this->check_attachments( array_unique( array_filter( $data[$menu_item]['attachments']['ids'] ) ), $atts_args ) : [];
2795
2796	// filter attachments
2797	$attachments = apply_filters( 'rl_get_gallery_images_attachments', $attachments, $atts_args );
2798
2799	// exclude any attachments?
2800	if ( $args['exclude'] && ! empty( $data[$menu_item]['attachments']['exclude'] ) )
2801	$attachments = array_diff( $attachments, $data[$menu_item]['attachments']['exclude'] );
2802
2803	// check filtered attachments
2804	$attachments = $this->check_attachments( $attachments, $atts_args );
2805
2806	// any attachments?
2807	if ( $attachments ) {
2808	if ( $args['limit'] )
2809	$counter = 0;
2810
2811	foreach ( $attachments as $attachment_id ) {
2812	// for counting mode get attachment id only
2813	if ( $args['count_images'] )
2814	$images[] = $attachment_id;
2815	else {
2816	// embed?
2817	if ( preg_match( '/^e\d+$/', $attachment_id ) === 1 ) {
2818	$attachment_data = $data[$menu_item]['attachments']['embed'][$attachment_id];
2819	$attachment_data['type'] = 'embed';
2820	} else
2821	$attachment_data = $attachment_id;
2822
2823	// get attachment image data
2824	$images[] = $this->get_gallery_image_src( $attachment_data, $args['image_size'], $args['thumbnail_size'] );
2825
2826	// limit attachments?
2827	if ( $args['limit'] ) {
2828	$counter++;
2829
2830	// limit reached?
2831	if ( $counter === $args['limit'] )
2832	break;
2833	}
2834	}
2835	}
2836	}
2837	break;
2838
2839	case 'featured':
2840	// only for featured frontend galleries
2841	if ( ! is_admin() \|\| wp_doing_ajax() ) {
2842	// prepare featured fields
2843	$this->fields['images']['featured'] = $this->prepare_featured_fields( $this->fields['images']['featured'] );
2844	}
2845
2846	// copy arguments
2847	$query_args = $args;
2848
2849	// skip order for counting mode
2850	if ( ! $args['count_images'] ) {
2851	// prevent duplicating images order (config tab) with posts order (images tab), query will handle empty strings
2852	if ( array_key_exists( 'post_orderby', $args ) )
2853	$query_args['orderby'] = $args['post_orderby'];
2854	elseif ( array_key_exists( 'orderby', $data[$menu_item] ) )
2855	$query_args['orderby'] = $data[$menu_item]['orderby'];
2856	else
2857	$query_args['orderby'] = '';
2858
2859	if ( array_key_exists( 'post_order', $args ) )
2860	$query_args['order'] = $args['post_order'];
2861	elseif ( array_key_exists( 'order', $data[$menu_item] ) )
2862	$query_args['order'] = $data[$menu_item]['order'];
2863	else
2864	$query_args['order'] = '';
2865	}
2866
2867	// get attachment ids
2868	$attachments = $this->gallery_query( array_merge( $data[$menu_item], $query_args ) );
2869
2870	// filter attachments
2871	$attachments = apply_filters( 'rl_get_gallery_images_attachments', $attachments );
2872
2873	// exclude any attachments?
2874	if ( $args['exclude'] && ! empty( $data[$menu_item]['attachments']['exclude'] ) )
2875	$attachments = array_diff( $attachments, $data[$menu_item]['attachments']['exclude'] );
2876
2877	// any attachments?
2878	if ( $attachments ) {
2879	if ( $args['limit'] )
2880	$counter = 0;
2881
2882	foreach ( $attachments as $attachment_id ) {
2883	// real attachment?
2884	if ( ! wp_attachment_is_image( $attachment_id ) )
2885	continue;
2886
2887	// for counting mode get attachment id only
2888	if ( $args['count_images'] )
2889	$images[] = $attachment_id;
2890	else {
2891	// get attachment image data
2892	$images[] = $this->get_gallery_image_src( $attachment_id, $args['image_size'], $args['thumbnail_size'] );
2893
2894	// limit attachments?
2895	if ( $args['limit'] ) {
2896	$counter++;
2897
2898	// limit reached?
2899	if ( $counter === $args['limit'] )
2900	break;
2901	}
2902	}
2903	}
2904	}
2905	break;
2906
2907	case 'folders':
2908	// is folders active?
2909	if ( ! $rl->options['folders']['active'] )
2910	break;
2911
2912	if ( ! array_key_exists( 'folder', $data[$menu_item] ) )
2913	$data[$menu_item]['folder'] = $defaults['folder'];
2914
2915	// ajax requests
2916	if ( is_string( $args['folder']['id'] ) )
2917	$args['folder']['id'] = (int) $args['folder']['id'];
2918
2919	// not empty folder term id?
2920	if ( ! empty( $args['folder']['id'] ) ) {
2921	// get term
2922	$term = get_term( $args['folder']['id'], $args['taxonomy'] );
2923
2924	// valid term?
2925	if ( is_a( $term, 'WP_Term' ) )
2926	$folder_id = (int) $term->term_id;
2927	else
2928	$folder_id = (int) $data[$menu_item]['folder']['id'];
2929	} else {
2930	if ( isset( $_POST['action'] ) && $_POST['action'] === 'rl-get-preview-content' )
2931	$folder_id = $args['folder']['id'];
2932	else
2933	$folder_id = (int) $data[$menu_item]['folder']['id'];
2934	}
2935
2936	if ( $folder_id >= 0 ) {
2937	$include_children = false;
2938
2939	// null means folder was not changed
2940	if ( $args['folder']['children'] === null ) {
2941	if ( array_key_exists( 'children', $data[$menu_item]['folder'] ) && $data[$menu_item]['folder']['children'] === true )
2942	$include_children = true;
2943	// overwritten by args
2944	} else {
2945	if ( is_string( $args['folder']['children'] ) ) {
2946	if ( $args['folder']['children'] === 'true' )
2947	$include_children = true;
2948	} elseif ( is_bool( $args['folder']['children'] ) ) {
2949	if ( $args['folder']['children'] )
2950	$include_children = true;
2951	}
2952	}
2953
2954	if ( $folder_id === 0 ) {
2955	if ( $include_children ) {
2956	$all_folders = get_terms(
2957	array(
2958	'taxonomy' => $args['taxonomy'],
2959	'hide_empty' => false,
2960	'fields' => 'ids',
2961	'hierarchical' => false,
2962	'number' => 0
2963	)
2964	);
2965
2966	$tax_query = array(
2967	array(
2968	'relation' => 'OR',
2969	array(
2970	'taxonomy' => $args['taxonomy'],
2971	'field' => 'term_id',
2972	'terms' => ( ! is_wp_error( $all_folders ) ) ? $all_folders : $folder_id,
2973	'include_children' => $include_children,
2974	'operator' => 'IN'
2975	),
2976	array(
2977	'taxonomy' => $args['taxonomy'],
2978	'field' => 'term_id',
2979	'terms' => $folder_id,
2980	'include_children' => $include_children,
2981	'operator' => 'NOT EXISTS'
2982	)
2983	)
2984	);
2985	} else {
2986	$tax_query = array(
2987	array(
2988	'taxonomy' => $args['taxonomy'],
2989	'field' => 'term_id',
2990	'terms' => $folder_id,
2991	'include_children' => $include_children,
2992	'operator' => 'NOT EXISTS'
2993	)
2994	);
2995	}
2996	} else {
2997	$tax_query = array(
2998	array(
2999	'taxonomy' => $args['taxonomy'],
3000	'field' => 'term_id',
3001	'terms' => $folder_id,
3002	'include_children' => $include_children,
3003	'operator' => 'IN'
3004	)
3005	);
3006	}
3007
3008	// prepare query arguments
3009	$wp_query_args = array(
3010	'post_type' => 'attachment',
3011	'post_status' => 'inherit',
3012	'post_mime_type' => array( 'image/jpeg', 'image/gif', 'image/png' ),
3013	'nopaging' => true,
3014	'posts_per_page' => -1,
3015	'fields' => 'ids',
3016	'tax_query' => $tax_query
3017	);
3018
3019	// is it preview?
3020	if ( $args['preview'] ) {
3021	$wp_query_args['posts_per_page'] = $args['preview_per_page'];
3022	$wp_query_args['offset'] = ( $args['preview_page'] - 1 ) * $args['preview_per_page'];
3023	$wp_query_args['nopaging'] = false;
3024	}
3025
3026	// run query
3027	$query = new WP_Query( apply_filters( 'rl_folders_query_args', $wp_query_args ) );
3028
3029	// get attachment ids
3030	$attachments = $query->get_posts();
3031
3032	// valid attachments?
3033	if ( ! is_wp_error( $attachments ) ) {
3034	// cast ids to int
3035	$attachments = array_map( 'intval', $attachments );
3036
3037	// make sure to skip duplicates
3038	$attachments = array_unique( $attachments );
3039
3040	// filter attachments
3041	$attachments = apply_filters( 'rl_get_gallery_images_attachments', $attachments );
3042
3043	// exclude any attachments?
3044	if ( $args['exclude'] && ! empty( $data[$menu_item]['attachments']['exclude'] ) )
3045	$attachments = array_diff( $attachments, $data[$menu_item]['attachments']['exclude'] );
3046
3047	// any attachments?
3048	if ( $attachments ) {
3049	if ( $args['limit'] )
3050	$counter = 0;
3051
3052	foreach ( $attachments as $attachment_id ) {
3053	// real attachment?
3054	if ( ! wp_attachment_is_image( $attachment_id ) )
3055	continue;
3056
3057	// for counting mode get attachment id only
3058	if ( $args['count_images'] )
3059	$images[] = $attachment_id;
3060	else {
3061	// get attachment image data
3062	$images[] = $this->get_gallery_image_src( $attachment_id, $args['image_size'], $args['thumbnail_size'] );
3063
3064	// limit attachments?
3065	if ( $args['limit'] ) {
3066	$counter++;
3067
3068	// limit reached?
3069	if ( $counter === $args['limit'] )
3070	break;
3071	}
3072	}
3073	}
3074	}
3075	}
3076	}
3077	break;
3078
3079	case 'remote_library':
3080	// is remote library active?
3081	if ( ! $rl->options['remote_library']['active'] )
3082	break;
3083
3084	// no media search phrase?
3085	if ( ! isset( $args['media_search'] ) )
3086	$args['media_search'] = isset( $data[$menu_item]['media_search'] ) ? $data[$menu_item]['media_search'] : '';
3087
3088	// no media provider?
3089	if ( ! isset( $args['media_provider'] ) )
3090	$args['media_provider'] = isset( $data[$menu_item]['media_provider'] ) ? $data[$menu_item]['media_provider'] : 'all';
3091
3092	// get remote images
3093	$images = $rl->remote_library->get_remote_library_images( $args );
3094	break;
3095	}
3096	}
3097
3098	// skip order for counting mode
3099	if ( ! $args['count_images'] ) {
3100	// config sort order
3101	switch ( $args['orderby'] ) {
3102	case 'id':
3103	$sort = [];
3104
3105	foreach ( $images as $key => $image ) {
3106	// set sorting value
3107	$sort[$key] = $image['id'];
3108	}
3109
3110	// sort
3111	array_multisort( $sort, $args['order'] === 'asc' ? SORT_ASC : SORT_DESC, SORT_NUMERIC, $images );
3112	break;
3113
3114	case 'title':
3115	$sort = [];
3116
3117	if ( $valid_gallery_type ) {
3118	// get lightbox data
3119	$lightbox_meta = get_post_meta( $gallery_id, '_rl_lightbox', true );
3120
3121	// valid data?
3122	if ( isset( $lightbox_meta['menu_item'] ) )
3123	$title_arg = $lightbox_meta[$lightbox_meta['menu_item']]['lightbox_image_title'];
3124	else
3125	$title_arg = $rl->options['settings']['gallery_image_title'];
3126	} else
3127	$title_arg = $rl->options['settings']['gallery_image_title'];
3128
3129	$images_copy = $images;
3130
3131	foreach ( $images_copy as $key => $image ) {
3132	if ( $title_arg === 'global' )
3133	$images[$key]['title'] = $rl->frontend->get_attachment_title( $image['id'], $rl->options['settings']['gallery_image_title'] );
3134	elseif ( $title_arg === 'default' )
3135	$images[$key]['title'] = '';
3136	else
3137	$images[$key]['title'] = $rl->frontend->get_attachment_title( $image['id'], $title_arg );
3138
3139	// set sorting value
3140	$sort[$key] = function_exists( 'mb_strtolower' ) ? mb_strtolower( $images[$key]['title'] ) : strtolower( $images[$key]['title'] );
3141	}
3142
3143	// sort
3144	array_multisort( $sort, $args['order'] === 'asc' ? SORT_ASC : SORT_DESC, SORT_STRING, $images );
3145	break;
3146
3147	case 'post_date':
3148	$sort = [];
3149
3150	foreach ( $images as $key => $image ) {
3151	// set sorting value
3152	$sort[$key] = $image['date'];
3153	}
3154
3155	// sort
3156	array_multisort( $sort, $args['order'] === 'asc' ? SORT_ASC : SORT_DESC, $images );
3157	break;
3158
3159	case 'menu_order':
3160	// do nothing
3161	break;
3162
3163	case 'rand':
3164	shuffle( $images );
3165	break;
3166	}
3167	}
3168
3169	// filter images
3170	$images = apply_filters( 'rl_get_gallery_images_array', $images, $gallery_id, $args );
3171
3172	// count number of images
3173	$images_count = count( $images );
3174
3175	// no preview?
3176	if ( ! $args['preview'] && ! $args['count_images'] && $args['limit'] === 0 )
3177	update_post_meta( $gallery_id, '_rl_images_count', $images_count );
3178
3179	// images pagination?
3180	if ( $images && ! $args['nopaging'] && $args['images_per_page'] > 0 && ! $args['count_images'] ) {
3181	// get part of images
3182	$images = array_slice( $images, ( $args['page'] - 1 ) * $args['images_per_page'], $args['images_per_page'], true );
3183
3184	// pass gallery args
3185	$this->gallery_args = $args;
3186	$this->gallery_args['total'] = (int) ceil( $images_count / $args['images_per_page'] );
3187
3188	// remove actions to avoid issues with multiple galleries on single page
3189	remove_action( 'rl_before_gallery', [ $this, 'do_pagination' ], 10 );
3190	remove_action( 'rl_after_gallery', [ $this, 'do_pagination' ], 10 );
3191
3192	// pagination position
3193	if ( $args['pagination_position'] === 'top' )
3194	add_action( 'rl_before_gallery', [ $this, 'do_pagination' ], 10, 2 );
3195	elseif ( $args['pagination_position'] === 'bottom' )
3196	add_action( 'rl_after_gallery', [ $this, 'do_pagination' ], 10, 2 );
3197	else {
3198	add_action( 'rl_before_gallery', [ $this, 'do_pagination' ], 10, 2 );
3199	add_action( 'rl_after_gallery', [ $this, 'do_pagination' ], 10, 2 );
3200	}
3201	}
3202
3203	return apply_filters( 'rl_get_gallery_images', array_values( $images ), $gallery_id, $args );
3204	}
3205
3206	/**
3207	* Create gallery pagination.
3208	*
3209	* @global object $wp
3210	*
3211	* @param array $args
3212	* @param int $gallery_id
3213	* @return void
3214	*/
3215	public function do_pagination( $args, $gallery_id ) {
3216	global $wp;
3217
3218	// get main instance
3219	$rl = Responsive_Lightbox();
3220
3221	// get current action
3222	$current_action = current_action();
3223
3224	if ( $current_action === 'rl_before_gallery' )
3225	$class = 'rl-pagination-top';
3226	elseif ( $current_action === 'rl_after_gallery' )
3227	$class = 'rl-pagination-bottom';
3228	else
3229	$class = '';
3230
3231	// set base arguments
3232	$base_args = [ 'rl_gallery_no' => $rl->frontend->get_data( 'gallery_no' ), 'rl_page' => '%#%' ];
3233
3234	if ( empty( $args['pagination_type'] ) )
3235	$args['pagination_type'] = 'paged';
3236
3237	// infinite scroll?
3238	if ( $args['pagination_type'] === 'infinite' )
3239	$base_args['rl_lightbox_script'] = $rl->get_data( 'current_script' );
3240
3241	echo
3242	'<div class="rl-pagination ' . esc_attr( $class ) . '"' . ( $args['pagination_type'] === 'infinite' ? ' data-button="' . esc_attr( $args['load_more'] ) . '"' : '' ) .'>' .
3243	paginate_links(
3244	[
3245	'format' => '?rl_page=%#%',
3246	'base' => add_query_arg( $base_args, $args['pagination_type'] !== 'paged' ? get_permalink( $gallery_id ) : home_url( $wp->request ) ),
3247	'total' => $this->gallery_args['total'],
3248	'current' => $this->gallery_args['page'],
3249	'show_all' => false,
3250	'end_size' => 1,
3251	'mid_size' => 2,
3252	'prev_next' => true,
3253	'prev_text' => esc_html__( '« Previous', 'responsive-lightbox' ),
3254	'next_text' => esc_html__( 'Next »', 'responsive-lightbox' ),
3255	'type' => 'plain',
3256	'add_args' => '',
3257	'add_fragment' => '',
3258	'before_page_number' => '',
3259	'after_page_number' => ''
3260	]
3261	) .
3262	'</div>' . ( $args['pagination_type'] === 'infinite' && $args['load_more'] === 'manually' ? '<div class="rl-gallery-button"><button class="rl-button rl-load-more">' . esc_html__( 'Load more', 'responsive-lightbox' ) . '</button></div>' : '' );
3263	}
3264
3265	/**
3266	* Check whether is it valid gallery AJAX request (rl-get-gallery-page-content action).
3267	*
3268	* @return bool
3269	*/
3270	public function gallery_ajax_verified() {
3271	return ( wp_doing_ajax() && isset( $_POST['action'], $_POST['gallery_id'], $_POST['gallery_no'], $_POST['page'], $_POST['nonce'], $_POST['preview'], $_POST['post_id'], $_POST['lightbox'] ) && $_POST['action'] === 'rl-get-gallery-page-content' && wp_verify_nonce( $_POST['nonce'], 'rl_nonce' ) );
3272	}
3273
3274	/**
3275	* Try to change lightbox in valid gallery AJAX request (rl-get-gallery-page-content action).
3276	*
3277	* @return void
3278	*/
3279	public function maybe_change_lightbox() {
3280	// check whether is it valid gallery ajax request
3281	if ( $this->gallery_ajax_verified() ) {
3282	// set new lightbox script
3283	Responsive_Lightbox()->set_lightbox_script( sanitize_key( $_POST['lightbox'] ) );
3284	}
3285	}
3286
3287	/**
3288	* Get gallery page.
3289	*
3290	* @param array $args
3291	* @return void
3292	*/
3293	public function get_gallery_page( $args ) {
3294	// check whether is it valid gallery ajax request
3295	if ( $this->gallery_ajax_verified() ) {
3296	// cast page number
3297	$_GET['rl_page'] = (int) $_POST['page'];
3298
3299	// check preview
3300	$preview = ( $_POST['preview'] === 'true' );
3301
3302	echo $this->gallery_shortcode(
3303	[
3304	'id' => (int) $_POST['gallery_id'],
3305	'gallery_no' => (int) $_POST['gallery_no'],
3306	'preview' => $preview
3307	]
3308	);
3309	}
3310
3311	exit;
3312	}
3313
3314	/**
3315	* Generate gallery preview.
3316	*
3317	* @return void
3318	*/
3319	public function post_gallery_preview() {
3320	// check data
3321	if ( ! isset( $_POST['post_id'], $_POST['gallery_id'], $_POST['nonce'], $_POST['page'] ) \|\| ! check_ajax_referer( 'rl-gallery-post', 'nonce', false ) )
3322	wp_send_json_error();
3323
3324	// check page
3325	$page = preg_replace( '/[^a-z-.]/i', '', $_POST['page'] );
3326
3327	// check page
3328	if ( ! in_array( $page, [ 'widgets.php', 'customize.php', 'post.php', 'post-new.php' ], true ) )
3329	wp_send_json_error();
3330
3331	// check edit_post capability
3332	if ( ( $page === 'post.php' \|\| $page === 'post-new.php' ) && ! current_user_can( 'edit_post', (int) $_POST['post_id'] ) )
3333	wp_send_json_error();
3334
3335	// check edit_theme_options capability
3336	if ( ( $page === 'widgets.php' \|\| $page === 'customize.php' ) && ! current_user_can( 'edit_theme_options' ) )
3337	wp_send_json_error();
3338
3339	// parse gallery id
3340	$gallery_id = (int) $_POST['gallery_id'];
3341
3342	// get gallery data
3343	$data = get_post_meta( $gallery_id, '_rl_images', true );
3344
3345	// prepare data
3346	$attachments = $exclude = [];
3347	$html = '';
3348
3349	// get images
3350	$images = $this->get_gallery_images(
3351	$gallery_id,
3352	[
3353	'exclude' => true,
3354	'limit' => 20
3355	]
3356	);
3357
3358	// get number of images
3359	$images_count = (int) get_post_meta( $gallery_id, '_rl_images_count', true );
3360
3361	if ( ! empty( $images ) ) {
3362	foreach ( $images as $image ) {
3363	$html .= '
3364	<li tabindex="0" role="checkbox" aria-label="' . esc_attr( $image['title'] ) . '" aria-checked="true" data-id="' . esc_attr( $image['id'] ) . '" class="attachment selection selected rl-status-active">
3365	<div class="attachment-preview js--select-attachment type-image ' . esc_attr( $image['thumbnail_orientation'] ). '">
3366	<div class="thumbnail">
3367	<div class="centered">
3368	<img src="' . esc_url( $image['thumbnail_url'] ) . '" draggable="false" alt="" />
3369	</div>
3370	</div>
3371	</div>
3372	</li>';
3373	}
3374	}
3375
3376	// send attachments content
3377	wp_send_json_success(
3378	array(
3379	'attachments' => $html,
3380	'count' => esc_html( sprintf( _n( '%s image', '%s images', $images_count, 'responsive-lightbox' ), $images_count ) ),
3381	'edit_url' => current_user_can( 'edit_post', $gallery_id ) ? esc_url_raw( admin_url( 'post.php?post=' . $gallery_id . '&action=edit' ) ) : ''
3382	)
3383	);
3384	}
3385
3386	/**
3387	* Get all galleries.
3388	*
3389	* @return void
3390	*/
3391	public function post_get_galleries() {
3392	// check data
3393	if ( ! isset( $_POST['post_id'], $_POST['search'], $_POST['nonce'], $_POST['page'] ) \|\| ! check_ajax_referer( 'rl-gallery-post', 'nonce', false ) )
3394	wp_send_json_error();
3395
3396	// check page
3397	$page = preg_replace( '/[^a-z-.]/i', '', $_POST['page'] );
3398
3399	// check page
3400	if ( ! in_array( $page, [ 'widgets.php', 'customize.php', 'post.php', 'post-new.php' ], true ) )
3401	wp_send_json_error();
3402
3403	// check edit_post capability
3404	if ( ( $page === 'post.php' \|\| $page === 'post-new.php' ) && ! current_user_can( 'edit_post', (int) $_POST['post_id'] ) )
3405	wp_send_json_error();
3406
3407	// check edit_theme_options capability
3408	if ( ( $page === 'widgets.php' \|\| $page === 'customize.php' ) && ! current_user_can( 'edit_theme_options' ) )
3409	wp_send_json_error();
3410
3411	$args = array(
3412	'post_type' => 'rl_gallery',
3413	'post_status' => 'publish',
3414	'nopaging' => true,
3415	'posts_per_page' => -1,
3416	'orderby' => 'title',
3417	'order' => 'ASC',
3418	'suppress_filters' => false,
3419	'no_found_rows' => true,
3420	'cache_results' => false
3421	);
3422
3423	// check category
3424	$category = isset( $_POST['category'] ) ? (int) $_POST['category'] : 0;
3425
3426	// specific category?
3427	if ( ! empty( $category ) ) {
3428	$args['tax_query'] = array(
3429	array(
3430	'taxonomy' => 'rl_category',
3431	'field' => 'term_id',
3432	'operator' => 'IN',
3433	'include_children' => false,
3434	'terms' => $category
3435	)
3436	);
3437	}
3438
3439	$search = wp_unslash( trim( $_POST['search'] ) );
3440
3441	if ( $search !== '' )
3442	$args['s'] = $search;
3443
3444	// get galleries
3445	$query = new WP_Query( $args );
3446
3447	$html = '';
3448	$ids = [];
3449
3450	// any galleries?
3451	if ( ! empty( $query->posts ) ) {
3452	foreach ( $query->posts as $gallery ) {
3453	// save gallery id
3454	$ids[] = (int) $gallery->ID;
3455
3456	// get featured image
3457	$featured = $this->get_featured_image_src( $gallery->ID );
3458
3459	if ( is_array( $featured ) && array_key_exists( 'url', $featured ) )
3460	$featured_image = $featured['url'];
3461	else
3462	$featured_image = '';
3463
3464	// get title
3465	$title = $gallery->post_title !== '' ? $gallery->post_title : esc_html__( '(no title)', 'responsive-gallery' );
3466
3467	$html .= '
3468	<li tabindex="0" role="checkbox" aria-label="' . esc_attr( $title ) . '" aria-checked="true" data-id="' . (int) $gallery->ID . '" class="attachment selection">
3469	<div class="attachment-preview js--select-attachment type-image ' . ( ! empty( $featured['thumbnail_orientation'] ) ? esc_attr( $featured['thumbnail_orientation'] ) : 'landscape' ) . '">
3470	<div class="thumbnail">
3471	<div class="centered" data-full-src="' . esc_url( $featured_image ) . '">
3472	' . $this->get_featured_image( $gallery->ID, 'thumbnail' ) . '
3473	</div>
3474	<div class="filename">
3475	<div>' . esc_html( $title ) . '</div>
3476	</div>
3477	</div>
3478	</div>
3479	<button type="button" class="button-link check"><span class="media-modal-icon"></span><span class="screen-reader-text">' . esc_html__( 'Deselect', 'responsive-lightbox' ) . '</span></button>
3480	</li>';
3481	}
3482	}
3483
3484	// send galleries content
3485	wp_send_json_success(
3486	[
3487	'galleries' => $ids,
3488	'html' => $html
3489	]
3490	);
3491	}
3492
3493	/**
3494	* Get gallery content based on request.
3495	*
3496	* @return void
3497	*/
3498	public function get_menu_content() {
3499	if ( ! isset( $_POST['post_id'], $_POST['tab'], $_POST['menu_item'], $_POST['nonce'] ) \|\| ! check_ajax_referer( 'rl-gallery', 'nonce', false ) )
3500	wp_send_json_error();
3501
3502	// check tab
3503	$tab = isset( $_POST['tab'] ) ? sanitize_key( $_POST['tab'] ) : '';
3504
3505	if ( ! array_key_exists( $tab, $this->tabs ) )
3506	wp_send_json_error();
3507
3508	// get post id
3509	$post_id = (int) $_POST['post_id'];
3510
3511	if ( ! current_user_can( 'edit_post', $post_id ) )
3512	wp_send_json_error();
3513
3514	// check menu item
3515	$menu_item = sanitize_key( $_POST['menu_item'] );
3516
3517	// get selected menu item
3518	$menu_item = ! empty( $menu_item ) && in_array( $menu_item, array_keys( $this->tabs[$tab]['menu_items'] ) ) ? $menu_item : key( $this->tabs[$tab]['menu_items'] );
3519
3520	// get tab content
3521	wp_send_json_success( $this->get_metabox_content( $tab, get_post_meta( $post_id, '_rl_' . $tab, true ), $menu_item, $post_id ) );
3522	}
3523
3524	/**
3525	* Get gallery preview content based on request.
3526	*
3527	* @return void
3528	*/
3529	public function get_gallery_preview_content() {
3530	// initial checks
3531	if ( ! isset( $_POST['post_id'], $_POST['menu_item'], $_POST['nonce'], $_POST['preview_type'] ) \|\| ! check_ajax_referer( 'rl-gallery', 'nonce', false ) )
3532	wp_send_json_error();
3533
3534	// cast gallery ID
3535	$post_id = (int) $_POST['post_id'];
3536
3537	// check user privileges
3538	if ( ! current_user_can( 'edit_post', $post_id ) \|\| ! current_user_can( 'upload_files' ) )
3539	wp_send_json_error();
3540
3541	// get query args
3542	$args = ! empty( $_POST['query'] ) ? wp_unslash( $_POST['query'] ) : [];
3543
3544	// check orderby
3545	if ( array_key_exists( 'orderby', $args ) ) {
3546	$args['post_orderby'] = $args['orderby'];
3547
3548	unset( $args['orderby'] );
3549	}
3550
3551	// check order
3552	if ( array_key_exists( 'order', $args ) ) {
3553	$args['post_order'] = $args['order'];
3554
3555	unset( $args['order'] );
3556	}
3557
3558	// check preview type
3559	$preview_type = sanitize_key( $_POST['preview_type'] );
3560
3561	// check preview type
3562	if ( ! in_array( $preview_type, [ 'page', 'update' ], true ) )
3563	$args['preview_type'] = 'page';
3564	else
3565	$args['preview_type'] = $preview_type;
3566
3567	// check menu item
3568	$menu_item = sanitize_key( $_POST['menu_item'] );
3569
3570	// set images menu item
3571	$menu_item = $this->menu_item = ! empty( $menu_item ) && array_key_exists( $menu_item, $this->tabs['images']['menu_items'] ) ? $menu_item : 'media';
3572
3573	if ( $this->fields['images'][$menu_item]['attachments']['preview']['pagination'] ) {
3574	if ( isset( $args['preview_page'] ) )
3575	$args['preview_page'] = (int) $args['preview_page'];
3576	else
3577	$args['preview_page'] = 1;
3578	}
3579
3580	// get images
3581	$images = $this->get_gallery_images( $post_id, $args );
3582
3583	// prepare JSON array
3584	$data = [];
3585
3586	if ( $menu_item === 'remote_library' ) {
3587	// get main instance
3588	$rl = Responsive_Lightbox();
3589
3590	$response_data = [];
3591
3592	// single provider?
3593	if ( $args['media_provider'] !== 'all' ) {
3594	// get provider
3595	$provider = $rl->providers[$args['media_provider']];
3596
3597	// add response data arguments if needed
3598	if ( ! empty( $provider['response_args'] ) ) {
3599	$response = $provider['instance']->get_response_data();
3600
3601	foreach ( $provider['response_args'] as $arg ) {
3602	if ( array_key_exists( $arg, $response ) )
3603	$response_data[$provider['slug']][$arg] = base64_encode( wp_json_encode( $response[$arg] ) );
3604	}
3605	}
3606	} else {
3607	// get active providers
3608	$providers = $rl->remote_library->get_active_providers();
3609
3610	if ( ! empty( $providers ) ) {
3611	foreach ( $providers as $provider ) {
3612	// get provider
3613	$provider = $rl->providers[$provider];
3614
3615	// add response data arguments if needed
3616	if ( ! empty( $provider['response_args'] ) ) {
3617	$response = $provider['instance']->get_response_data();
3618
3619	foreach ( $provider['response_args'] as $arg ) {
3620	if ( array_key_exists( $arg, $response ) )
3621	$response_data[$provider['slug']][$arg] = base64_encode( wp_json_encode( $response[$arg] ) );
3622	}
3623	}
3624	}
3625	}
3626	}
3627
3628	$data['response_data'] = $response_data;
3629	}
3630
3631	// parse excluded images
3632	$excluded = ! empty( $_POST['excluded'] ) && is_array( $_POST['excluded'] ) ? array_map( 'intval', $_POST['excluded'] ) : [];
3633
3634	// get excluded images
3635	if ( ! empty( $excluded ) )
3636	$excluded = array_unique( array_filter( $excluded ) );
3637
3638	// get media item template
3639	$media_item_template = $this->get_media_item_template( $this->fields['images'][$menu_item]['attachments']['preview'] );
3640
3641	// build html
3642	$html = '';
3643
3644	// any images?
3645	if ( ! empty( $images ) ) {
3646	foreach ( $images as $image ) {
3647	// get image content html
3648	$html .= $this->get_gallery_preview_image_content( $image, 'images', $menu_item, 'attachments', $media_item_template, $excluded, $image['id'] );
3649	}
3650	}
3651
3652	$data['images'] = $html;
3653
3654	if ( $this->fields['images'][$menu_item]['attachments']['preview']['pagination'] )
3655	$data['pagination'] = $this->get_preview_pagination( $args['preview_page'] );
3656
3657	// send JSON
3658	wp_send_json_success( $data );
3659	}
3660
3661	/**
3662	* Get gallery preview image content HTML.
3663	*
3664	* @param array $image
3665	* @param string $tab_id
3666	* @param string $menu_item
3667	* @param string $field_name
3668	* @param string $template
3669	* @param array $excluded
3670	* @param string\|int $excluded_item
3671	* @return string
3672	*/
3673	public function get_gallery_preview_image_content( $image, $tab_id, $menu_item, $field_name, $template, $excluded, $excluded_item = '' ) {
3674	// set flag
3675	if ( empty( $excluded_item ) )
3676	$excluded_flag = false;
3677	else
3678	$excluded_flag = in_array( $excluded_item, $excluded, true );
3679
3680	if ( $image['type'] === 'embed' ) {
3681	// replace all embed data
3682	$media_html = str_replace(
3683	[
3684	'__EMBED_ID__',
3685	'__EMBED_URL__',
3686	'__EMBED_WIDTH__',
3687	'__EMBED_HEIGHT__',
3688	'__EMBED_THUMBNAIL_URL__',
3689	'__EMBED_THUMBNAIL_WIDTH__',
3690	'__EMBED_THUMBNAIL_HEIGHT__',
3691	'__EMBED_TITLE__',
3692	'__EMBED_DESCRIPTION__',
3693	'__EMBED_DATE__'
3694	],
3695	[
3696	esc_attr( $image['id'] ),
3697	esc_url( $image['url'] ),
3698	(int) $image['width'],
3699	(int) $image['height'],
3700	esc_url( $image['thumbnail_url'] ),
3701	(int) $image['thumbnail_width'],
3702	(int) $image['thumbnail_height'],
3703	esc_attr( $image['title'] ),
3704	esc_textarea( $image['caption'] ),
3705	esc_attr( $image['date'] )
3706	],
3707	$this->get_media_embed_template( false )
3708	);
3709	} else
3710	$media_html = '';
3711
3712	// replace id and url of an image
3713	return str_replace(
3714	[
3715	'__MEDIA_DATA__',
3716	'__MEDIA_ID__',
3717	'__MEDIA_STATUS__',
3718	'__MEDIA_TYPE__'
3719	],
3720	[
3721	$this->get_media_exclude_input_template( $tab_id, $menu_item, $field_name, $excluded_flag ? $excluded_item : '' ) . $media_html . $image['thumbnail_link'],
3722	esc_attr( $image['id'] ),
3723	$excluded_flag ? ' rl-status-inactive' : ' rl-status-active',
3724	esc_attr( $image['type'] )
3725	],
3726	$template
3727	);
3728	}
3729
3730	/**
3731	* Get gallery image link.
3732	*
3733	* @param array $image Image data
3734	* @param mixed $size Image size
3735	* @param array $attr Image attributes
3736	* @return string
3737	*/
3738	public function get_gallery_image_link( $image, $size = 'thumbnail', $attr = [] ) {
3739	$link = '';
3740
3741	if ( $size === 'thumbnail' ) {
3742	$url = $image['thumbnail_url'];
3743	$width = $image['thumbnail_width'];
3744	$height = $image['thumbnail_height'];
3745	} else {
3746	$url = $image['url'];
3747	$width = $image['width'];
3748	$height = $image['height'];
3749	}
3750
3751	if ( ! empty( $image['url'] ) ) {
3752	$size_class = $size;
3753
3754	if ( is_array( $size_class ) )
3755	$size_class = join( 'x', $size_class );
3756
3757	// combine attributes
3758	$attr = wp_parse_args(
3759	$attr,
3760	array(
3761	'src' => $url,
3762	'class' => 'attachment-' . $size_class . ' size-' . $size_class . ' format-' . ( $height > $width ? 'portrait' : 'landscape' ),
3763	'alt' => $image['alt']
3764	)
3765	);
3766
3767	// apply filters if any
3768	$attr = apply_filters( 'rl_get_gallery_image_attributes', $attr, $image, $size );
3769
3770	// start link output
3771	$link = rtrim( '<img ' . image_hwstring( $width, $height ) );
3772
3773	// add attributes
3774	foreach ( $attr as $name => $value ) {
3775	$link .= ' ' . esc_attr( $name ) . '="' . ( $name === 'src' ? esc_url( $value ) : esc_attr( $value ) ) . '"';
3776	}
3777
3778	// end link output
3779	$link .= ' />';
3780	}
3781
3782	return apply_filters( 'rl_get_gallery_image_link', $link, $image, $size );
3783	}
3784
3785	/**
3786	* Get attachment image source.
3787	*
3788	* @param int\|string\|array $image Attachment ID, image URL or array of image data
3789	* @param string $image_size Image size
3790	* @param string $thumbnail_size Thumbnail size
3791	* @return array
3792	*/
3793	public function get_gallery_image_src( $image, $image_size = 'large', $thumbnail_size = 'thumbnail' ) {
3794	$imagedata = [];
3795
3796	// check difference in size between image and thumbnail
3797	$diff_sizes = $thumbnail_size !== $image_size;
3798
3799	// attachment id?
3800	if ( is_int( $image ) ) {
3801	if ( $image ) {
3802	$type = 'image';
3803	$width = 0;
3804	$height = 0;
3805
3806	// image src
3807	if ( wp_attachment_is_image( $image ) ) {
3808	$image_src = wp_get_attachment_image_src( $image, $image_size, false );
3809
3810	// different image and thumbnail sizes?
3811	if ( $diff_sizes )
3812	$thumbnail_src = wp_get_attachment_image_src( $image, $thumbnail_size, false );
3813	else
3814	$thumbnail_src = $image_src;
3815
3816	$file_url = $image_src[0];
3817	$width = $image_src[1];
3818	$height = $image_src[2];
3819	$thumbnail_url = $thumbnail_src[0];
3820	$thumbnail_width = $thumbnail_src[1];
3821	$thumbnail_height = $thumbnail_src[2];
3822	// video, blank thumbnail src
3823	} elseif ( rl_current_lightbox_supports( 'video' ) && wp_attachment_is( 'video', $image ) ) {
3824	$type = 'video';
3825	$thumbnail_id = $this->get_video_thumbnail_id( $image );
3826	$thumbnail_src = wp_get_attachment_image_src( $thumbnail_id, $image_size, false );
3827
3828	// get video metadata
3829	$meta = wp_get_attachment_metadata( $image );
3830
3831	if ( $meta ) {
3832	$width = $meta['width'];
3833	$height = $meta['height'];
3834	} else {
3835	$width = $thumbnail_src[1];
3836	$height = $thumbnail_src[2];
3837	}
3838
3839	// different image and thumbnail sizes?
3840	if ( $diff_sizes )
3841	$thumbnail_src = wp_get_attachment_image_src( $thumbnail_id, $thumbnail_size, false );
3842
3843	// file url
3844	$file_url = wp_get_attachment_url( $image );
3845	$thumbnail_url = $thumbnail_src[0];
3846	$thumbnail_width = $thumbnail_src[1];
3847	$thumbnail_height = $thumbnail_src[2];
3848	}
3849
3850	// get alternative text
3851	$alt = get_post_meta( $image, '_wp_attachment_image_alt', true );
3852
3853	// allow only strings
3854	if ( ! is_string( $alt ) )
3855	$alt = '';
3856
3857	$imagedata = array(
3858	'id' => $image,
3859	'title' => get_the_title( $image ),
3860	'date' => get_the_date( 'Y-m-d H:i:s', $image ),
3861	'caption' => '',
3862	'alt' => $alt,
3863	'url' => $file_url, // $image_src[0],
3864	'width' => $width,
3865	'height' => $height,
3866	'orientation' => $height > $width ? 'portrait' : 'landscape',
3867	'thumbnail_url' => $thumbnail_url,
3868	'thumbnail_width' => $thumbnail_width,
3869	'thumbnail_height' => $thumbnail_height,
3870	'type' => $type
3871	);
3872
3873	if ( $diff_sizes )
3874	$imagedata['thumbnail_orientation'] = $thumbnail_src[2] > $thumbnail_src[1] ? 'portrait' : 'landscape';
3875	else
3876	$imagedata['thumbnail_orientation'] = $imagedata['orientation'];
3877	}
3878	// image url
3879	} elseif ( is_string( $image ) ) {
3880	$imagedata['url'] = $image;
3881
3882	@list( $imagedata['width'], $imagedata['height'] ) = rl_get_image_size_by_url( $imagedata['url'] );
3883
3884	$imagedata = array(
3885	'id' => 0,
3886	'title' => '',
3887	'date' => '',
3888	'caption' => '',
3889	'alt' => '',
3890	'url' => $imagedata['url'],
3891	'width' => $imagedata['width'],
3892	'height' => $imagedata['height'],
3893	'orientation' => $imagedata['height'] > $imagedata['width'] ? 'portrait' : 'landscape',
3894	'thumbnail_url' => $imagedata['url'],
3895	'thumbnail_width' => $imagedata['width'],
3896	'thumbnail_height' => $imagedata['height'],
3897	'type' => 'image'
3898	);
3899
3900	$imagedata['thumbnail_orientation'] = $imagedata['orientation'];
3901	// full image array
3902	} elseif ( is_array( $image ) ) {
3903	// set width and height from url, if not available
3904	if ( empty( $image['width'] ) \|\| empty( $image['height'] ) )
3905	@list( $image['width'], $image['height'] ) = rl_get_image_size_by_url( $image['url'] );
3906
3907	// set thumbnail data, if not available
3908	if ( empty( $image['thumbnail_url'] ) ) {
3909	$image['thumbnail_url'] = $image['url'];
3910	$image['thumbnail_width'] = $image['width'];
3911	$image['thumbnail_height'] = $image['height'];
3912	} else {
3913	// set thumbnail width and height from url, if not available
3914	if ( empty( $image['thumbnail_width'] ) \|\| empty( $image['thumbnail_height'] ) )
3915	@list( $image['thumbnail_width'], $image['thumbnail_height'] ) = rl_get_image_size_by_url( $image['thumbnail_url'] );
3916	}
3917
3918	$imagedata = array(
3919	'id' => ! empty( $image['id'] ) ? ( preg_match( '/^e\d+$/', $image['id'] ) === 1 ? $image['id'] : (int) $image['id'] ) : 0,
3920	'title' => ! empty( $image['title'] ) ? ( $image['title'] ) : '',
3921	'date' => ! empty( $image['date'] ) ? ( $image['date'] ) : '',
3922	'caption' => ! empty( $image['caption'] ) ? ( $image['caption'] ) : '',
3923	'alt' => ! empty( $image['alt'] ) ? ( $image['alt'] ) : '',
3924	'url' => ! empty( $image['url'] ) ? esc_url_raw( $image['url'] ) : '',
3925	'width' => ! empty( $image['width'] ) ? (int) $image['width'] : 0,
3926	'height' => ! empty( $image['height'] ) ? (int) $image['height'] : 0,
3927	'thumbnail_url' => ! empty( $image['thumbnail_url'] ) ? esc_url_raw( $image['thumbnail_url'] ) : '',
3928	'thumbnail_width' => ! empty( $image['thumbnail_width'] ) ? (int) $image['thumbnail_width'] : 0,
3929	'thumbnail_height' => ! empty( $image['thumbnail_height'] ) ? (int) $image['thumbnail_height'] : 0,
3930	'link' => ! empty( $image['link'] ) ? esc_url_raw( $image['link'] ) : '',
3931	'thumbnail_link' => ! empty( $image['thumbnail_link'] ) ? esc_url_raw( $image['thumbnail_link'] ) : '',
3932	'type' => ! empty( $image['type'] ) ? ( $image['type'] ) : 'image'
3933	);
3934
3935	$imagedata['orientation'] = $imagedata['height'] > $imagedata['width'] ? 'portrait' : 'landscape';
3936	$imagedata['thumbnail_orientation'] = $imagedata['thumbnail_height'] > $imagedata['thumbnail_width'] ? 'portrait' : 'landscape';
3937	}
3938
3939	if ( ! empty( $imagedata ) ) {
3940	// link does not exist?
3941	if ( empty( $imagedata['link'] ) )
3942	$imagedata['link'] = $this->get_gallery_image_link( $imagedata, $image_size );
3943
3944	// thumbnail link does not exist?
3945	if ( empty( $imagedata['thumbnail_link'] ) ) {
3946	// different image and thumbnail sizes?
3947	if ( $diff_sizes )
3948	$imagedata['thumbnail_link'] = $this->get_gallery_image_link( $imagedata, $thumbnail_size );
3949	else
3950	$imagedata['thumbnail_link'] = $imagedata['link'];
3951	}
3952	}
3953
3954	return apply_filters( 'rl_get_gallery_image_src', $imagedata, $image, $image_size, $thumbnail_size );
3955	}
3956
3957	/**
3958	* Get gallery featured image.
3959	*
3960	* @param int $gallery_id
3961	* @param string $size Image size
3962	* @param array $attr Image attributes
3963	* @return string
3964	*/
3965	public function get_featured_image( $gallery_id, $size = 'thumbnail', $attr = [] ) {
3966	$image = $this->get_featured_image_src( $gallery_id );
3967	$html = '';
3968
3969	if ( $image )
3970	$html = $this->get_gallery_image_link( $this->get_gallery_image_src( $image, 'large', $size ), $size, $attr );
3971
3972	return apply_filters( 'rl_get_featured_image', $html, $gallery_id, $size );
3973	}
3974
3975	/**
3976	* Get gallery featured image data.
3977	*
3978	* @param int $gallery_id
3979	* @return array
3980	*/
3981	public function get_featured_image_src( $gallery_id ) {
3982	// get featured image data
3983	$featured_image_type = get_post_meta( $gallery_id, '_rl_featured_image_type', true );
3984	$featured_image = get_post_meta( $gallery_id, '_rl_featured_image', true );
3985
3986	switch ( $featured_image_type ) {
3987	// custom url
3988	case 'url':
3989	$frontend = function_exists( 'Responsive_Lightbox' ) ? Responsive_Lightbox()->frontend : null;
3990	if ( $frontend && method_exists( $frontend, 'sanitize_remote_image_url' ) )
3991	$featured_image = $frontend->sanitize_remote_image_url( $featured_image );
3992	else
3993	$featured_image = '';
3994
3995	if ( $featured_image !== '' ) {
3996	$image = esc_url( $featured_image );
3997	break;
3998	}
3999
4000	$image = $this->get_first_gallery_featured_image( $gallery_id );
4001	break;
4002
4003	// attachment id
4004	case 'id':
4005	$featured_image = (int) $featured_image;
4006	$image = wp_attachment_is_image( $featured_image ) ? $featured_image : $this->maybe_generate_thumbnail();
4007	break;
4008
4009	// first image
4010	case 'image':
4011	default:
4012	$image = $this->get_first_gallery_featured_image( $gallery_id );
4013	}
4014
4015	return apply_filters( 'rl_get_featured_image_src', $image, $gallery_id, $featured_image_type, $featured_image );
4016	}
4017
4018	/**
4019	* Helper to fetch the first gallery image data.
4020	*
4021	* @param int $gallery_id
4022	* @return array\|int
4023	*/
4024	protected function get_first_gallery_featured_image( $gallery_id ) {
4025	$images = $this->get_gallery_images(
4026	$gallery_id,
4027	[
4028	'exclude' => true,
4029	'limit' => 1
4030	]
4031	);
4032
4033	if ( $images )
4034	return reset( $images );
4035
4036	return 0;
4037	}
4038
4039	/**
4040	* Get featured gallery attachments.
4041	*
4042	* @param array $args
4043	* @return array
4044	*/
4045	public function gallery_query( $args ) {
4046	$attachments = [];
4047
4048	// get fields
4049	$fields = $this->fields['images']['featured'];
4050
4051	// force these settings
4052	$args['fields'] = 'ids';
4053	$args['tax_query'] = [];
4054	$args['meta_query'] = [];
4055	$args['author__in'] = [];
4056	$args['post_parent__in'] = [];
4057
4058	// get image source
4059	$args['image_source'] = isset( $args['image_source'] ) && array_key_exists( $args['image_source'], $fields['image_source']['options'] ) ? $args['image_source'] : $fields['image_source']['default'];
4060
4061	// get images per post
4062	$args['images_per_post'] = isset( $args['images_per_post'] ) ? absint( $args['images_per_post'] ) : $fields['images_per_post']['default'];
4063
4064	// get number of posts
4065	$args['number_of_posts'] = isset( $args['number_of_posts'] ) ? (int) $args['number_of_posts'] : $fields['number_of_posts']['default'];
4066
4067	// get all posts?
4068	if ( $args['number_of_posts'] <= 0 )
4069	$args['number_of_posts'] = -1;
4070
4071	// convert to wp query arg
4072	$args['posts_per_page'] = $args['number_of_posts'];
4073
4074	$args['order'] = isset( $args['order'] ) && array_key_exists( $args['order'], $fields['order']['options'] ) ? $args['order'] : $fields['order']['default'];
4075	$args['orderby'] = isset( $args['orderby'] ) && array_key_exists( $args['orderby'], $fields['orderby']['options'] ) ? $args['orderby'] : $fields['orderby']['default'];
4076	$args['offset'] = isset( $args['offset'] ) ? absint( $args['offset'] ) : 0;
4077
4078	$tax_queries = array(
4079	'post_format' => [],
4080	'post_term' => []
4081	);
4082
4083	$meta_queries = array(
4084	'page_template' => [],
4085	'image_source' => []
4086	);
4087
4088	// post type
4089	if ( ! empty( $args['post_type'] ) ) {
4090	// assign post types
4091	$post_types = $args['post_type'];
4092
4093	// clear post types
4094	$args['post_type'] = [];
4095
4096	foreach ( $post_types as $post_type ) {
4097	if ( array_key_exists( $post_type, $fields['post_type']['options'] ) )
4098	$args['post_type'][] = $post_type;
4099	}
4100	} else
4101	$args['post_type'] = $this->get_post_types( true );
4102
4103	// post status
4104	if ( ! empty( $args['post_status'] ) ) {
4105	// assign post statuses
4106	$post_statuses = $args['post_status'];
4107
4108	// clear post statuses
4109	$args['post_status'] = [];
4110
4111	foreach ( $post_statuses as $post_status ) {
4112	if ( array_key_exists( $post_status, $fields['post_status']['options'] ) )
4113	$args['post_status'][] = $post_status;
4114	}
4115	}
4116
4117	// post format
4118	if ( ! empty( $args['post_format'] ) ) {
4119	// assign post formats
4120	$post_formats = $args['post_format'];
4121
4122	foreach ( $post_formats as $post_format ) {
4123	if ( array_key_exists( $post_format, $fields['post_format']['options'] ) ) {
4124	// standard format?
4125	if ( $post_format === 'standard' ) {
4126	$tax_queries['post_format'][] = array(
4127	'relation' => 'OR',
4128	array(
4129	'taxonomy' => 'post_format',
4130	'field' => 'slug',
4131	'terms' => array( 'post-format-standard' )
4132	),
4133	array(
4134	'taxonomy' => 'post_format',
4135	'field' => 'slug',
4136	'operator' => 'NOT EXISTS'
4137	)
4138	);
4139	} else {
4140	$tax_queries['post_format'][] = array(
4141	'taxonomy' => 'post_format',
4142	'field' => 'slug',
4143	'terms' => array( 'post-format-' . $post_format )
4144	);
4145	}
4146	}
4147	}
4148
4149	unset( $args['post_format'] );
4150	}
4151
4152	// page template
4153	if ( ! empty( $args['page_template'] ) ) {
4154	foreach ( $args['page_template'] as $page_template ) {
4155	if ( array_key_exists( $page_template, $fields['page_template']['options'] ) ) {
4156	if ( $page_template === 'default' ) {
4157	$meta_queries['page_template'][] = array(
4158	'relation' => 'OR',
4159	array(
4160	'key' => '_wp_page_template',
4161	'value' => 'default'
4162	),
4163	array(
4164	'key' => '_wp_page_template',
4165	'value' => ''
4166	),
4167	array(
4168	'key' => '_wp_page_template',
4169	'compare' => 'NOT EXISTS'
4170	)
4171	);
4172	} else {
4173	$meta_queries['page_template'][] = array(
4174	'key' => '_wp_page_template',
4175	'value' => $page_template
4176	);
4177	}
4178	}
4179	}
4180	}
4181
4182	// post author
4183	if ( ! empty( $args['post_author'] ) ) {
4184	foreach ( $args['post_author'] as $post_author ) {
4185	if ( array_key_exists( $post_author, $fields['post_author']['options'] ) )
4186	$args['author__in'][] = $post_author;
4187	}
4188	}
4189
4190	// page parent
4191	if ( ! empty( $args['page_parent'] ) ) {
4192	foreach ( $args['page_parent'] as $page_parent ) {
4193	if ( array_key_exists( $page_parent, $fields['page_parent']['options'] ) )
4194	$args['post_parent__in'][] = $page_parent;
4195	}
4196	}
4197
4198	// post term
4199	if ( ! empty( $args['post_term'] ) ) {
4200	$terms = [];
4201
4202	// get all terms
4203	if ( ! empty( $fields['post_term']['options'] ) ) {
4204	foreach ( $fields['post_term']['options'] as $tax => $data ) {
4205	$terms = array_merge( $terms, array_map( 'intval', array_keys( $data['terms'] ) ) );
4206	}
4207	}
4208
4209	foreach ( $args['post_term'] as $post_term ) {
4210	if ( in_array( $post_term, $terms ) ) {
4211	$term = get_term( $post_term );
4212
4213	$tax_queries['post_term'][] = array(
4214	'taxonomy' => $term->taxonomy,
4215	'field' => 'term_id',
4216	'terms' => (int) $post_term
4217	);
4218	}
4219	}
4220	}
4221
4222	switch ( $args['image_source'] ) {
4223	case 'thumbnails':
4224	$meta_queries['image_source'][] = array(
4225	'relation' => 'OR',
4226	array(
4227	'key' => '_thumbnail_id',
4228	'compare' => 'EXISTS'
4229	)
4230	);
4231	}
4232
4233	// any tax queries?
4234	if ( ! empty( $tax_queries['post_term'] ) \|\| ! empty( $tax_queries['post_format'] ) ) {
4235	$args['tax_query'] = array( 'relation' => 'AND' );
4236
4237	if ( ! empty( $tax_queries['post_term'] ) )
4238	$args['tax_query'][] = array( 'relation' => 'OR' ) + $tax_queries['post_term'];
4239
4240	if ( ! empty( $tax_queries['post_format'] ) )
4241	$args['tax_query'][] = array( 'relation' => 'OR' ) + $tax_queries['post_format'];
4242	}
4243
4244	// any tax queries?
4245	if ( ! empty( $meta_queries['page_template'] ) \|\| ! empty( $meta_queries['image_source'] ) ) {
4246	$args['meta_query'] = array( 'relation' => 'AND' );
4247
4248	if ( ! empty( $meta_queries['page_template'] ) )
4249	$args['meta_query'][] = array( 'relation' => 'OR', $meta_queries['page_template'] );
4250
4251	if ( ! empty( $meta_queries['image_source'] ) )
4252	$args['meta_query'][] = array( 'relation' => 'OR', $meta_queries['image_source'] );
4253	}
4254
4255	// get posts
4256	$query = new WP_Query( apply_filters( 'rl_gallery_query_args', $args ) );
4257
4258	// get attachments
4259	if ( $query->have_posts() )
4260	$attachments = $this->get_gallery_query_attachments( $query->posts, $args );
4261
4262	return $attachments;
4263	}
4264
4265	/**
4266	* Get query attachments.
4267	*
4268	* @param array $posts Post IDs, array or objects
4269	* @param array $args Additional arguments
4270	* @return array
4271	*/
4272	public function get_gallery_query_attachments( $posts, $args ) {
4273	$attachments = [];
4274
4275	// any posts?
4276	if ( ! empty( $posts ) ) {
4277	switch ( $args['image_source'] ) {
4278	case 'thumbnails':
4279	$nop = count( $posts ) - 1;
4280
4281	foreach ( $posts as $number => $post_id ) {
4282	$attachment_id = (int) get_post_thumbnail_id( $post_id );
4283
4284	// real attachment?
4285	if ( wp_attachment_is_image( $attachment_id ) )
4286	$attachments[] = $attachment_id;
4287	else
4288	continue;
4289
4290	if ( $args['preview'] ) {
4291	$attachments = array_unique( $attachments );
4292	$noa = count( $attachments );
4293
4294	if ( ( $noa >= ( $args['preview_per_page'] * $args['preview_page'] ) ) \|\| $nop === $number ) {
4295	$attachments = array_slice( $attachments, ( $args['preview_page'] - 1 ) * $args['preview_per_page'], $args['preview_per_page'], false );
4296
4297	break;
4298	}
4299	}
4300	}
4301	break;
4302
4303	case 'attached_images':
4304	$nop = count( $posts ) - 1;
4305
4306	foreach ( $posts as $number => $post_id ) {
4307	// get attached images, do not use get_attached_media here!
4308	$attachment_ids = (array) get_children(
4309	array(
4310	'post_parent' => $post_id,
4311	'post_status' => 'inherit',
4312	'post_type' => 'attachment',
4313	'post_mime_type' => 'image',
4314	'posts_per_page' => $args['images_per_post'],
4315	'order' => 'ASC',
4316	'orderby' => 'menu_order',
4317	'nopaging' => false,
4318	'page' => 1,
4319	'fields' => 'ids'
4320	)
4321	);
4322
4323	if ( $attachment_ids ) {
4324	foreach ( $attachment_ids as $attachment_id ) {
4325	if ( ! empty( $attachment_id ) ) {
4326	$attachments[] = $attachment_id;
4327	}
4328	}
4329	}
4330
4331	if ( $args['preview'] ) {
4332	$attachments = array_unique( $attachments );
4333	$noa = count( $attachments );
4334
4335	if ( ( $noa >= ( $args['preview_per_page'] * $args['preview_page'] ) ) \|\| $nop === $number ) {
4336	$attachments = array_slice( $attachments, ( $args['preview_page'] - 1 ) * $args['preview_per_page'], $args['preview_per_page'], false );
4337
4338	break;
4339	}
4340	}
4341	}
4342	}
4343	}
4344
4345	return apply_filters( 'rl_get_gallery_query_attachments', array_unique( $attachments ), $posts, $args );
4346	}
4347
4348	/**
4349	* Load featured content query args.
4350	*
4351	* @global string $pagenow
4352	*
4353	* @return void
4354	*/
4355	public function init_admin() {
4356	global $pagenow;
4357
4358	// check values
4359	$post = isset( $_GET['post'] ) ? (int) $_GET['post'] : 0;
4360	$post_id = isset( $_POST['post_ID'] ) ? (int) $_POST['post_ID'] : 0;
4361	$action = isset( $_POST['action'] ) ? sanitize_key( $_POST['action'] ) : '';
4362	$post_type = isset( $_POST['post_type'] ) ? sanitize_key( $_POST['post_type'] ) : '';
4363
4364	// prepare query arguments if needed
4365	if ( ( $pagenow === 'post.php' && ( ( $post && get_post_type( $post ) === 'rl_gallery' ) \|\| ( $post_id && get_post_type( $post_id ) === 'rl_gallery' ) ) ) \|\| ( in_array( $pagenow, array( 'edit.php', 'post-new.php'), true ) && $post_type === 'rl_gallery' ) \|\| ( $pagenow === 'admin-ajax.php' && $action && in_array( $action, array( 'rl-get-preview-content', 'rl-post-gallery-preview', 'rl-get-menu-content' ), true ) ) )
4366	$this->fields['images']['featured'] = $this->prepare_featured_fields( $this->fields['images']['featured'] );
4367
4368	// add default thumbnail image if needed
4369	if ( Responsive_Lightbox()->options['builder']['gallery_builder'] && $pagenow === 'edit.php' && $post_type && $post_type === 'rl_gallery' )
4370	$this->maybe_generate_thumbnail();
4371	}
4372
4373	/**
4374	* Generate post thumbnail replacement.
4375	*
4376	* @return int
4377	*/
4378	public function maybe_generate_thumbnail() {
4379	// get old attachment
4380	$thumbnail_id = get_posts(
4381	array(
4382	'name' => 'responsive-lightbox-thumbnail',
4383	'post_type' => 'attachment',
4384	'post_status' => 'inherit',
4385	'numberposts' => 1,
4386	'fields' => 'ids'
4387	)
4388	);
4389
4390	// no attachment?
4391	if ( empty( $thumbnail_id ) ) {
4392	// get new attachment
4393	$thumbnail_id = get_posts(
4394	array(
4395	'name' => 'responsive-lightbox-thumbnail',
4396	'post_type' => 'attachment',
4397	'post_status' => 'pending',
4398	'numberposts' => 1,
4399	'fields' => 'ids'
4400	)
4401	);
4402
4403	// no attachment?
4404	if ( empty( $thumbnail_id ) ) {
4405	// get upload directory data
4406	$wp_upload_dir = wp_upload_dir();
4407
4408	// get file path
4409	$filepath = str_replace( '\\', '/', RESPONSIVE_LIGHTBOX_PATH . 'images/responsive-lightbox-thumbnail.png' );
4410
4411	// get file name
4412	$filename = basename( $filepath );
4413
4414	// new filepath in upload dir
4415	$new_filepath = $wp_upload_dir['path'] . '/' . $filename;
4416
4417	// copty file to upload dir
4418	copy( $filepath, $new_filepath );
4419
4420	// get type of file
4421	$filetype = wp_check_filetype( $filename );
4422
4423	// force pending status for the attachment
4424	add_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4425
4426	// insert attachment
4427	$thumbnail_id = wp_insert_attachment(
4428	array(
4429	'guid' => $wp_upload_dir['url'] . '/' . $filename,
4430	'post_mime_type' => $filetype['type'],
4431	'post_title' => preg_replace( '/\.[^.]+$/', '', $filename ),
4432	'post_content' => '',
4433	'post_parent' => 0,
4434	'post_status' => 'inherit'
4435	),
4436	$new_filepath,
4437	0
4438	);
4439
4440	remove_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4441
4442	// success?
4443	if ( $thumbnail_id ) {
4444	// make sure that this file is included
4445	require_once( ABSPATH . 'wp-admin/includes/image.php' );
4446
4447	// update database with generated metadata for the attachment
4448	wp_update_attachment_metadata( $thumbnail_id, wp_generate_attachment_metadata( $thumbnail_id, $new_filepath ) );
4449	}
4450	} else
4451	$thumbnail_id = $thumbnail_id[0];
4452	} else {
4453	// force pending status for the attachment
4454	add_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4455
4456	$thumbnail_id = wp_update_post(
4457	array(
4458	'ID' => $thumbnail_id[0],
4459	'post_status' => 'pending'
4460	)
4461	);
4462
4463	remove_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4464	}
4465
4466	return (int) $thumbnail_id;
4467	}
4468
4469	/**
4470	* Get video thumbnail replacement.
4471	*
4472	* @param int $post_id
4473	* @return int
4474	*/
4475	public function get_video_thumbnail_id( $post_id ) {
4476	$thumbnail_id = 0;
4477
4478	// try to get video thumbnail
4479	$attachment_id = (int) get_post_thumbnail_id( $post_id );
4480
4481	// real attachment?
4482	if ( wp_attachment_is_image( $attachment_id ) )
4483	$thumbnail_id = $attachment_id;
4484
4485	// try to get default video poster image
4486	if ( ! $thumbnail_id ) {
4487	$thumbnail_id = get_posts(
4488	array(
4489	'name' => 'responsive-lightbox-video-thumbnail',
4490	'post_type' => 'attachment',
4491	'post_status' => 'inherit',
4492	'numberposts' => 1,
4493	'fields' => 'ids'
4494	)
4495	);
4496	}
4497
4498	// no attachment?
4499	if ( ! $thumbnail_id ) {
4500	// get new attachment
4501	$thumbnail_id = get_posts(
4502	array(
4503	'name' => 'responsive-lightbox-video-thumbnail',
4504	'post_type' => 'attachment',
4505	'post_status' => 'pending',
4506	'numberposts' => 1,
4507	'fields' => 'ids'
4508	)
4509	);
4510
4511	// no attachment?
4512	if ( ! $thumbnail_id ) {
4513	// get upload directory data
4514	$wp_upload_dir = wp_upload_dir();
4515
4516	// get file path
4517	$filepath = str_replace( '\\', '/', RESPONSIVE_LIGHTBOX_PATH . 'images/responsive-lightbox-video-thumbnail.png' );
4518
4519	// get file name
4520	$filename = basename( $filepath );
4521
4522	// new filepath in upload dir
4523	$new_filepath = $wp_upload_dir['path'] . '/' . $filename;
4524
4525	// copty file to upload dir
4526	copy( $filepath, $new_filepath );
4527
4528	// get type of file
4529	$filetype = wp_check_filetype( $filename );
4530
4531	// force pending status for the attachment
4532	add_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4533
4534	// insert attachment
4535	$thumbnail_id = wp_insert_attachment(
4536	array(
4537	'guid' => $wp_upload_dir['url'] . '/' . $filename,
4538	'post_mime_type' => $filetype['type'],
4539	'post_title' => preg_replace( '/\.[^.]+$/', '', $filename ),
4540	'post_content' => '',
4541	'post_parent' => 0,
4542	'post_status' => 'inherit'
4543	),
4544	$new_filepath,
4545	0
4546	);
4547
4548	remove_filter( 'wp_insert_attachment_data', array( $this, 'set_attachment_post_status' ) );
4549
4550	// success?
4551	if ( $thumbnail_id ) {
4552	// make sure that this file is included
4553	require_once( ABSPATH . 'wp-admin/includes/image.php' );
4554
4555	// update database with generated metadata for the attachment
4556	wp_update_attachment_metadata( $thumbnail_id, wp_generate_attachment_metadata( $thumbnail_id, $new_filepath ) );
4557	}
4558	} else
4559	$thumbnail_id = $thumbnail_id[0];
4560	}
4561
4562	return (int) $thumbnail_id;
4563	}
4564
4565	/**
4566	* Change status of new attachment thumbnail replacement.
4567	*
4568	* @param array $data
4569	* @return array
4570	*/
4571	function set_attachment_post_status( $data ) {
4572	$data['post_status'] = 'pending';
4573
4574	return $data;
4575	}
4576
4577	/**
4578	* Prepare featured content fields.
4579	*
4580	* @param array $fields
4581	* @return array
4582	*/
4583	public function prepare_featured_fields( $fields ) {
4584	foreach ( array( 'post_type', 'post_status', 'post_format', 'post_term', 'post_author', 'page_parent', 'page_template' ) as $option ) {
4585	$fields[$option]['options'] = $this->prepare_query_args( $option );
4586	}
4587
4588	return $fields;
4589	}
4590
4591	/**
4592	* Prepare values option list.
4593	*
4594	* @param string $type
4595	* @return array
4596	*/
4597	public function prepare_query_args( $type = '' ) {
4598	$html = '';
4599
4600	switch( $type ) {
4601	case 'post_type':
4602	$data = $this->get_post_types();
4603	break;
4604
4605	case 'post_status':
4606	$data = $this->get_post_statuses();
4607	break;
4608
4609	case 'post_format':
4610	$data = $this->get_post_formats();
4611	break;
4612
4613	case 'post_term':
4614	$taxonomies = $this->get_taxonomies();
4615	$new_terms = [];
4616
4617	if ( ! empty( $taxonomies ) ) {
4618	foreach ( $taxonomies as $tax_id => $label ) {
4619	$terms = get_terms(
4620	array(
4621	'taxonomy' => $tax_id,
4622	'orderby' => 'name',
4623	'order' => 'ASC',
4624	'hide_empty' => false,
4625	'fields' => 'id=>name'
4626	)
4627	);
4628
4629	if ( ! empty( $terms ) )
4630	$new_terms[$tax_id] = array(
4631	'label' => $label,
4632	'terms' => $terms
4633	);
4634	}
4635	}
4636
4637	$data = $new_terms;
4638	break;
4639
4640	case 'post_author':
4641	$data = $this->get_users();
4642	break;
4643
4644	case 'page_parent':
4645	$parents = [];
4646	$hierarchical = get_post_types(
4647	array(
4648	'public' => true,
4649	'hierarchical' => true
4650	),
4651	'objects',
4652	'and'
4653	);
4654
4655	if ( ! empty( $hierarchical ) ) {
4656	foreach ( $hierarchical as $post_type => $object ) {
4657	// get top level hierarchical posts
4658	$query = new WP_Query(
4659	array(
4660	'post_type' => $post_type,
4661	'post_status' => 'publish',
4662	'nopaging' => true,
4663	'posts_per_page' => -1,
4664	'orderby' => 'title',
4665	'order' => 'ASC',
4666	'suppress_filters' => false,
4667	'no_found_rows' => true,
4668	'cache_results' => false,
4669	'post_parent' => 0
4670	)
4671	);
4672
4673	if ( ! empty( $query->posts ) ) {
4674	foreach ( $query->posts as $post ) {
4675	$parents[$post->ID] = trim( $post->post_title ) === '' ? __( 'Untitled' ) : $post->post_title;
4676	}
4677	}
4678	}
4679	}
4680
4681	$data = $parents;
4682	break;
4683
4684	case 'page_template':
4685	$data = $this->get_page_templates();
4686	break;
4687
4688	default:
4689	$data = [];
4690	}
4691
4692	return apply_filters( 'rl_galleries_prepare_query_args', $data, $type );
4693	}
4694
4695	/**
4696	* Get public post types.
4697	*
4698	* @param bool $simple Which data should be returned
4699	* @param bool $skip Which post types should be skipped
4700	* @return array
4701	*/
4702	public function get_post_types( $simple = false, $skip = [ 'attachment', 'rl_gallery' ] ) {
4703	$post_types = get_post_types(
4704	array(
4705	'public' => true
4706	),
4707	'objects',
4708	'and'
4709	);
4710
4711	$data = [];
4712
4713	if ( ! empty( $post_types ) ) {
4714	foreach ( $post_types as $post_type => $cpt ) {
4715	// skip unwanted post types
4716	if ( in_array( $post_type, $skip, true ) )
4717	continue;
4718
4719	if ( $simple )
4720	$data[] = $post_type;
4721	else
4722	$data[$post_type] = $cpt->labels->singular_name;
4723	}
4724	}
4725
4726	if ( ! $simple )
4727	asort( $data );
4728
4729	return $data;
4730	}
4731
4732	/**
4733	* Get post statuses.
4734	*
4735	* @return array
4736	*/
4737	public function get_post_statuses() {
4738	$post_statuses = get_post_stati();
4739
4740	asort( $post_statuses );
4741
4742	// remove inherit post status
4743	if ( isset( $post_statuses['inherit'] ) )
4744	unset( $post_statuses['inherit'] );
4745
4746	return $post_statuses;
4747	}
4748
4749	/**
4750	* Get post formats.
4751	*
4752	* @return array
4753	*/
4754	public function get_post_formats() {
4755	$post_formats = array(
4756	'aside' => __( 'Aside' ),
4757	'audio' => __( 'Audio' ),
4758	'chat' => __( 'Chat' ),
4759	'gallery' => __( 'Gallery' ),
4760	'link' => __( 'Link' ),
4761	'photo' => __( 'Photo' ),
4762	'quote' => __( 'Quote' ),
4763	'standard' => __( 'Standard' ),
4764	'status' => __( 'Status' ),
4765	'video' => __( 'Video' )
4766	);
4767
4768	asort( $post_formats );
4769
4770	return $post_formats;
4771	}
4772
4773	/**
4774	* Get taxonomies.
4775	*
4776	* @return array
4777	*/
4778	public function get_taxonomies() {
4779	$taxonomies = get_taxonomies(
4780	array(
4781	'public' => true
4782	),
4783	'objects',
4784	'and'
4785	);
4786
4787	// remove post format
4788	if ( array_key_exists( 'post_format', $taxonomies ) )
4789	unset( $taxonomies['post_format'] );
4790
4791	// get main instance
4792	$rl = Responsive_Lightbox();
4793
4794	// remove gallery categories
4795	if ( $rl->options['builder']['categories'] && array_key_exists( 'rl_category', $taxonomies ) )
4796	unset( $taxonomies['rl_category'] );
4797
4798	// remove gallery tags
4799	if ( $rl->options['builder']['tags'] && array_key_exists( 'rl_tag', $taxonomies ) )
4800	unset( $taxonomies['rl_tag'] );
4801
4802	if ( $rl->options['folders']['active'] ) {
4803	// remove active folders taxonomy from gallery source selector
4804	$active_taxonomy = $rl->folders->get_active_taxonomy();
4805	unset( $taxonomies[$active_taxonomy] );
4806
4807	// remove media folders tags
4808	if ( $rl->options['folders']['media_tags'] )
4809	unset( $taxonomies['rl_media_tag'] );
4810	}
4811
4812	$data = [];
4813
4814	if ( ! empty( $taxonomies ) ) {
4815	foreach ( $taxonomies as $tax_id => $taxonomy ) {
4816	$data[$tax_id] = $taxonomy->labels->singular_name;
4817	}
4818	}
4819
4820	// sort taxonomies
4821	asort( $data );
4822
4823	return $data;
4824	}
4825
4826	/**
4827	* Get users.
4828	*
4829	* @return array
4830	*/
4831	public function get_users() {
4832	$users = get_users(
4833	array(
4834	'fields' => array( 'ID', 'user_login' )
4835	)
4836	);
4837
4838	$data = [];
4839
4840	if ( ! empty( $users ) ) {
4841	foreach ( $users as $user ) {
4842	$data[(int) $user->ID] = $user->user_login;
4843	}
4844	}
4845
4846	asort( $data );
4847
4848	return $data;
4849	}
4850
4851	/**
4852	* Get page templates.
4853	*
4854	* @return array
4855	*/
4856	public function get_page_templates() {
4857	$data = [];
4858	$page_templates = wp_get_theme()->get_page_templates();
4859
4860	if ( ! empty( $page_templates ) )
4861	asort( $page_templates );
4862
4863	$data = array_merge( array( 'default' => apply_filters( 'default_page_template_title', __( 'Default Template' ) ) ), $page_templates );
4864
4865	return $data;
4866	}
4867
4868	/**
4869	* Fix possible misplaced or hidden metaboxes do to old 'after_title' metabox and possibility to move internal metaboxes.
4870	*
4871	* @return void
4872	*/
4873	public function clear_metaboxes( $screen ) {
4874	global $pagenow;
4875
4876	if ( ! ( ( $pagenow === 'post.php' \|\| $pagenow === 'post-new.php' ) && ! empty( $screen->post_type ) && $screen->post_type === 'rl_gallery' && empty( $_POST['rl_gallery'] ) ) )
4877	return;
4878
4879	// get user id
4880	$user_id = get_current_user_id();
4881
4882	// get rl metaboxes
4883	$order = get_user_meta( $user_id, 'meta-box-order_rl_gallery', true );
4884
4885	// any metabox order? fix possible misplaced metaboxes
4886	if ( is_array( $order ) && ! empty( $order ) ) {
4887	// save metaboxes
4888	$_order = $order;
4889
4890	// default rl metaboxes
4891	$rl_boxes = [ 'responsive-gallery-images', 'responsive-gallery-config', 'responsive-gallery-design', 'responsive-gallery-paging', 'responsive-gallery-lightbox', 'responsive-gallery-misc' ];
4892
4893	foreach ( $_order as $group => $metaboxes ) {
4894	if ( $group === 'after_title' ) {
4895	// remove deprecated after_title metabox
4896	unset( $order['after_title'] );
4897	} elseif ( $metaboxes !== '' ) {
4898	$boxes = explode( ',', $metaboxes );
4899	$new_boxes = [];
4900
4901	foreach ( $boxes as $box ) {
4902	if ( ! in_array( $box, $rl_boxes, true ) )
4903	$new_boxes[] = $box;
4904	}
4905
4906	if ( ! empty( $new_boxes ) )
4907	$order[$group] = implode( ',', $new_boxes );
4908	else
4909	$order[$group] = '';
4910	}
4911	}
4912
4913	// remove default metaboxes storage
4914	if ( array_key_exists( 'responsive_lightbox_metaboxes', $order ) )
4915	unset( $order['responsive_lightbox_metaboxes'] );
4916
4917	// update usermeta to prevent issues with rl metaboxes
4918	if ( $order !== $_order )
4919	update_user_meta( $user_id, 'meta-box-order_rl_gallery', $order );
4920	}
4921	}
4922
4923	/**
4924	* Save gallery metadata.
4925	*
4926	* @param int $post_id
4927	* @param object $post
4928	* @param bool $update Whether existing post is being updated or not
4929	* @return void
4930	*/
4931	public function save_post( $post_id, $post, $update ) {
4932	// check action
4933	$action = isset( $_GET['action'] ) ? sanitize_key( $_GET['action'] ) : '';
4934
4935	if ( wp_is_post_revision( $post_id ) \|\| ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) \|\| ! $update \|\| in_array( $post->post_status, array( 'trash', 'auto-draft' ), true ) \|\| ( $action === 'untrash' ) \|\| empty( $_POST['rl_gallery'] ) )
4936	return;
4937
4938	// save gallery
4939	$this->save_gallery( wp_unslash( $_POST ), $post_id );
4940	}
4941
4942	/**
4943	* Save gallery preview metadata.
4944	*
4945	* @param array $post_data Gallery data
4946	* @param int $post_id
4947	* @param bool $preview Whether is it preview
4948	* @return void
4949	*/
4950	public function save_gallery( $post_data, $post_id, $preview = false ) {
4951	// get gallery data
4952	$data = $post_data['rl_gallery'];
4953
4954	// prepare sanitized data
4955	$safedata = [];
4956
4957	// sanitize all fields
4958	foreach ( $this->fields as $tab_id => $menu_items ) {
4959	switch ( $tab_id ) {
4960	case 'config':
4961	// get main instance
4962	$rl = Responsive_Lightbox();
4963
4964	// add menu item
4965	$menu_item = isset( $data[$tab_id], $data[$tab_id]['menu_item'] ) && array_key_exists( $data[$tab_id]['menu_item'], $this->tabs[$tab_id]['menu_items'] ) ? $data[$tab_id]['menu_item'] : reset( $this->tabs[$tab_id]['menu_items'] );
4966
4967	// get default gallery fields
4968	$default_gallery_fields = $rl->frontend->get_default_gallery_fields();
4969
4970	// prepare fields
4971	if ( $menu_item === 'default' )
4972	$items = $default_gallery_fields;
4973	else {
4974	// assign settings and defaults
4975	$fields = $rl->settings->get_setting_fields( $menu_item . '_gallery' );
4976	$defaults = $rl->defaults[$menu_item . '_gallery'];
4977
4978	// make a copy
4979	$fields_copy = $fields;
4980
4981	foreach ( $fields_copy as $field_id => $field ) {
4982	if ( $field['type'] === 'multiple' ) {
4983	foreach ( $field['fields'] as $subfield_id => $subfield ) {
4984	$fields[$field_id]['fields'][$subfield_id]['default'] = $defaults[$subfield_id];
4985	}
4986	} else
4987	$fields[$field_id]['default'] = $defaults[$field_id];
4988	}
4989
4990	$items = $rl->frontend->get_unique_fields( $default_gallery_fields, $fields );
4991	}
4992
4993	// sanitize fields
4994	$safedata = $this->sanitize_fields( $items, $data, $tab_id, $menu_item );
4995
4996	// add menu item
4997	$safedata[$tab_id]['menu_item'] = $menu_item;
4998	break;
4999
5000	default:
5001	// add menu item
5002	$menu_item = isset( $data[$tab_id], $data[$tab_id]['menu_item'] ) && array_key_exists( $data[$tab_id]['menu_item'], $this->tabs[$tab_id]['menu_items'] ) ? $data[$tab_id]['menu_item'] : 'options';
5003
5004	// sanitize fields
5005	$safedata = $this->sanitize_fields( $menu_items[$menu_item], $data, $tab_id, $menu_item );
5006
5007	// add menu item
5008	$safedata[$tab_id]['menu_item'] = $menu_item;
5009	}
5010
5011	$safedata[$tab_id] = apply_filters( 'rl_gallery_tab_metadata', $safedata[$tab_id], $tab_id );
5012
5013	// preview?
5014	if ( $preview )
5015	update_metadata( 'post', $post_id, '_rl_' . $tab_id, $safedata[$tab_id] );
5016	else
5017	update_post_meta( $post_id, '_rl_' . $tab_id, $safedata[$tab_id] );
5018	}
5019
5020	$featured_image_type = ! empty( $post_data['rl_gallery_featured_image'] ) && in_array( $post_data['rl_gallery_featured_image'], array( 'id', 'url', 'image' ), true ) ? $post_data['rl_gallery_featured_image'] : 'id';
5021
5022	switch ( $featured_image_type ) {
5023	// custom url
5024	case 'url':
5025	$thumbnail_id = $this->maybe_generate_thumbnail();
5026	$frontend = function_exists( 'Responsive_Lightbox' ) ? Responsive_Lightbox()->frontend : null;
5027	$custom_url = isset( $post_data['_rl_thumbnail_url'] ) ? $post_data['_rl_thumbnail_url'] : '';
5028	if ( $frontend && method_exists( $frontend, 'sanitize_remote_image_url' ) )
5029	$featured_image = $frontend->sanitize_remote_image_url( $custom_url );
5030	else
5031	$featured_image = '';
5032
5033	if ( $featured_image === '' )
5034	$featured_image_type = 'image';
5035	break;
5036
5037	// first image
5038	case 'image':
5039	$thumbnail_id = $this->maybe_generate_thumbnail();
5040	$featured_image = '';
5041	break;
5042
5043	// attachment id
5044	case 'id':
5045	default:
5046	$featured_image = $thumbnail_id = isset( $post_data['_thumbnail_id'] ) ? (int) $post_data['_thumbnail_id'] : 0;
5047	}
5048
5049	// preview?
5050	if ( $preview ) {
5051	update_metadata( 'post', $post_id, '_rl_featured_image_type', $featured_image_type );
5052	update_metadata( 'post', $post_id, '_rl_featured_image', $featured_image );
5053	update_metadata( 'post', $post_id, '_thumbnail_id', $thumbnail_id );
5054	} else {
5055	// update featured image
5056	update_post_meta( $post_id, '_rl_featured_image_type', $featured_image_type );
5057	update_post_meta( $post_id, '_rl_featured_image', $featured_image );
5058	update_post_meta( $post_id, '_thumbnail_id', $thumbnail_id );
5059
5060	// save number of images
5061	update_post_meta( $post_id, '_rl_images_count', $this->get_gallery_images_number( $post_id ) );
5062	}
5063
5064	// update post excerpt
5065	if ( isset( $safedata['misc']['options']['gallery_description'] ) ) {
5066	remove_action( 'save_post_rl_gallery', [ $this, 'save_post' ], 10, 3 );
5067
5068	$postdata = [
5069	'ID' => $post_id,
5070	'post_excerpt' => sanitize_textarea_field( $safedata['misc']['options']['gallery_description'] )
5071	];
5072
5073	wp_update_post( $postdata );
5074
5075	add_action( 'save_post_rl_gallery', [ $this, 'save_post' ], 10, 3 );
5076	}
5077	}
5078
5079	/**
5080	* Check attachments IDs.
5081	*
5082	* @param array $attachments Attachment ID's
5083	* @param array $args
5084	* @return array
5085	*/
5086	public function check_attachments( $attachments, $args = [] ) {
5087	// no attachments?
5088	if ( empty( $attachments ) \|\| ! is_array( $attachments ) )
5089	return [];
5090
5091	// check providers support
5092	if ( ! empty( $args['providers'] ) )
5093	$embed = rl_current_lightbox_supports( $args['providers'], 'OR' );
5094	else
5095	$embed = false;
5096
5097	// no embed data?
5098	if ( ! $embed )
5099	$copy = array_map( 'intval', $attachments );
5100	else
5101	$copy = $attachments;
5102
5103	// check attachments
5104	foreach ( $attachments as $key => $attachment_id ) {
5105	// embed?
5106	if ( $embed && preg_match( '/^e\d+$/', $attachment_id ) === 1 ) {
5107	if ( ! in_array( $attachment_id, $args['embed_keys'], true ) )
5108	unset( $copy[$key] );
5109	// video support?
5110	} elseif ( rl_current_lightbox_supports( 'video' ) ) {
5111	// is it an image or video?
5112	if ( ! wp_attachment_is( 'video', $attachment_id ) && ! wp_attachment_is( 'image', $attachment_id ) )
5113	unset( $copy[$key] );
5114	// make sure it's integer
5115	elseif ( $embed )
5116	$copy[$key] = (int) $copy[$key];
5117	} else {
5118	// is it an image?
5119	if ( ! wp_attachment_is_image( $attachment_id ) )
5120	unset( $copy[$key] );
5121	// make sure it's integer
5122	elseif ( $embed )
5123	$copy[$key] = (int) $copy[$key];
5124	}
5125	}
5126
5127	return array_values( $copy );
5128	}
5129
5130	/**
5131	* Display shortcode metabox.
5132	*
5133	* @param object $post
5134	* @return void
5135	*/
5136	public function shortcode_metabox( $post ) {
5137	echo '
5138	<p>' . esc_html__( 'You can place this gallery anywhere into your posts, pages, custom post types or widgets by using the shortcode below', 'responsive-lightbox' ) . ':</p>
5139	<code class="rl-shortcode" data-number="0">[rl_gallery id="' . (int) $post->ID . '"]</code>
5140	<p>' . esc_html__( 'You can also place this gallery into your template files by using the template tag below', 'responsive-lightbox' ) . ':</p>
5141	<code class="rl-shortcode" data-number="1">if ( function_exists( \'rl_gallery\' ) ) { rl_gallery( \'' . (int) $post->ID . '\' ); }</code>';
5142	}
5143
5144	/**
5145	* Add new gallery listing columns.
5146	*
5147	* @param array $columns
5148	* @return array
5149	*/
5150	public function gallery_columns( $columns ) {
5151	// find title position
5152	$offset = array_search( 'title', array_keys( $columns ) );
5153
5154	// put image column before title
5155	$columns = array_merge(
5156	array_slice( $columns, 0, $offset ),
5157	array(
5158	'image' => esc_html__( 'Gallery', 'responsive-lightbox' )
5159	),
5160	array_slice( $columns, $offset )
5161	);
5162
5163	// put new columns after title
5164	$columns = array_merge(
5165	array_slice( $columns, 0, $offset + 2 ),
5166	array(
5167	'shortcode' => esc_html__( 'Shortcode', 'responsive-lightbox' ),
5168	'type' => esc_html__( 'Type', 'responsive-lightbox' ),
5169	'source' => esc_html__( 'Source', 'responsive-lightbox' )
5170	),
5171	array_slice( $columns, $offset + 2 )
5172	);
5173
5174	return $columns;
5175	}
5176
5177	/**
5178	* Add new gallery listing columns content.
5179	*
5180	* @global string $pagenow
5181	*
5182	* @param string $column_name
5183	* @param int $post_id
5184	* @return void
5185	*/
5186	public function gallery_columns_content( $column_name, $post_id ) {
5187	global $pagenow;
5188
5189	if ( $pagenow === 'edit.php' ) {
5190	switch ( $column_name ) {
5191	case 'image':
5192	// get image data, based on gallery source type
5193	$image = $this->get_featured_image( $post_id, 'thumbnail' );
5194	$images_count = (int) get_post_meta( $post_id, '_rl_images_count', true );
5195
5196	// display count
5197	if ( ! empty( $image ) )
5198	echo '<span class="media-icon image-icon">' . wp_kses_post( $image ) . '</span><span>' . esc_html( sprintf( _n( '%s element', '%s elements', $images_count, 'responsive-lightbox' ), $images_count ) ) . '</span>';
5199	else
5200	echo '<span class="media-icon image-icon">' . wp_get_attachment_image( 0, array( 60, 60 ), true, array( 'alt' => '' ) ) . '</span>';
5201	break;
5202
5203	case 'shortcode':
5204	echo '<code>[rl_gallery id="' . (int) $post_id . '"]</code>';
5205	break;
5206
5207	case 'type':
5208	$config = get_post_meta( $post_id, '_rl_config', true );
5209
5210	if ( ! empty( $config['menu_item'] ) && array_key_exists( $config['menu_item'], $this->tabs['config']['menu_items'] ) ) {
5211	echo esc_html( $this->tabs['config']['menu_items'][$config['menu_item']] );
5212
5213	if ( $config['menu_item'] === 'default' )
5214	echo esc_html( ' (' . $this->tabs['config']['menu_items'][Responsive_Lightbox()->options['settings']['builder_gallery']] . ')' );
5215	} else
5216	echo '-';
5217	break;
5218
5219	case 'source':
5220	$images = get_post_meta( $post_id, '_rl_images', true );
5221
5222	if ( ! empty( $images['menu_item'] ) && array_key_exists( $images['menu_item'], $this->tabs['images']['menu_items'] ) )
5223	echo esc_html( $this->tabs['images']['menu_items'][$images['menu_item']] );
5224	else
5225	echo '-';
5226	break;
5227	}
5228	}
5229	}
5230
5231	/**
5232	* Get size information for all currently-registered image sizes.
5233	*
5234	* @global array $_wp_additional_image_sizes
5235	*
5236	* @return array
5237	*/
5238	public function get_image_sizes() {
5239	global $_wp_additional_image_sizes;
5240
5241	$sizes = [];
5242
5243	foreach ( get_intermediate_image_sizes() as $_size ) {
5244	if ( in_array( $_size, [ 'thumbnail', 'medium', 'medium_large', 'large' ] ) ) {
5245	$sizes[$_size]['width'] = get_option( "{$_size}_size_w" );
5246	$sizes[$_size]['height'] = get_option( "{$_size}_size_h" );
5247	$sizes[$_size]['crop'] = (bool) get_option( "{$_size}_crop" );
5248	} elseif ( isset( $_wp_additional_image_sizes[$_size] ) ) {
5249	$sizes[$_size] = [
5250	'width' => $_wp_additional_image_sizes[$_size]['width'],
5251	'height' => $_wp_additional_image_sizes[$_size]['height'],
5252	'crop' => $_wp_additional_image_sizes[$_size]['crop'],
5253	];
5254	}
5255	}
5256
5257	return $sizes;
5258	}
5259
5260	/**
5261	* Get size information for a specific image size.
5262	*
5263	* @param string $size The image size for which to retrieve data.
5264	* @return false\|array
5265	*/
5266	public function get_image_size( $size ) {
5267	if ( isset( $this->sizes[$size] ) )
5268	return $this->sizes[$size];
5269	else
5270	return false;
5271	}
5272
5273	/**
5274	* Filter the admin post thumbnail HTML markup.
5275	*
5276	* @param string $content
5277	* @param int $post_id
5278	* @param int $thumbnail_id
5279	* @return string
5280	*/
5281	public function admin_post_thumbnail_html( $content, $post_id, $thumbnail_id ) {
5282	if ( get_post_type( $post_id ) === 'rl_gallery' ) {
5283	$value = get_post_meta( $post_id, '_rl_featured_image', true );
5284	$frontend = function_exists( 'Responsive_Lightbox' ) ? Responsive_Lightbox()->frontend : null;
5285	if ( $frontend && method_exists( $frontend, 'sanitize_remote_image_url' ) )
5286	$value = $frontend->sanitize_remote_image_url( $value );
5287	$type = get_post_meta( $post_id, '_rl_featured_image_type', true );
5288	$type = ! empty( $type ) && in_array( $type, array( 'image', 'id', 'url' ) ) ? $type : 'image';
5289
5290	// force media library image
5291	if ( wp_doing_ajax() )
5292	$type = 'id';
5293	// post featured image is post thumbnail replacement?
5294	elseif ( $this->maybe_generate_thumbnail() === (int) $thumbnail_id ) {
5295	remove_filter( 'admin_post_thumbnail_html', array( $this, 'admin_post_thumbnail_html' ), 10 );
5296
5297	$content = _wp_post_thumbnail_html( 0, $post_id );
5298	}
5299
5300	$content = '
5301	<div class="rl-gallery-featured-image-options">
5302	<p class="howto">' . esc_html__( 'Select gallery featured image source:', 'responsive-lightbox' ) . '</p>
5303	<label for="rl-gallery-featured-image"><input id="rl-gallery-featured-image" type="radio" name="rl_gallery_featured_image" value="image" ' . checked( $type, 'image', false ) . ' />' . esc_html__( 'First gallery image', 'responsive-lightbox' ) . '</label><br />
5304	<label for="rl-gallery-featured-id"><input id="rl-gallery-featured-id" type="radio" name="rl_gallery_featured_image" value="id" ' . checked( $type, 'id', false ) . ' />' . esc_html__( 'Media Library', 'responsive-lightbox' ) . '</label><br />
5305	<label for="rl-gallery-featured-url"><input id="rl-gallery-featured-url" type="radio" name="rl_gallery_featured_image" value="url" ' . checked( $type, 'url', false ) . ' />' . esc_html__( 'Custom URL', 'responsive-lightbox' ) . '</label>
5306	</div>
5307	<div class="rl-gallery-featured-image-select">
5308	<div class="rl-gallery-featured-image-select-id"' . ( $type === 'id' ? '' : ' style="display: none;"' ) . '>' . $content . '</div>
5309	<div class="rl-gallery-featured-image-select-url"' . ( $type === 'url' ? '' : ' style="display: none;"' ) . '>
5310	<p><input id="_rl_thumbnail_url" class="large-text" name="_rl_thumbnail_url" value="' . ( $type === 'url' ? esc_url( $value ) : '' ) . '" type="text" /></p>
5311	<p class="howto">' . esc_html__( 'Custom featured image URL', 'responsive-lightbox' ) . '</p>
5312	</div>
5313	<div class="rl-gallery-featured-image-select-image"' . ( $type === 'image' ? '' : ' style="display: none;"' ) . '><p class="howto">' . esc_html__( 'Dynamically generated first gallery image', 'responsive-lightbox' ) . '</p></div>
5314	</div>
5315	';
5316	}
5317
5318	return $content;
5319	}
5320
5321	/**
5322	* Modify the resulting HTML so that the feature image is set as a background property.
5323	*
5324	* @param string $html The HTML image tag.
5325	* @param int $post_id The post whose featured image is to be printed.
5326	* @param int $post_thumbnail_id The post thumbnail ID.
5327	* @param array\|string $size The size of the featured image.
5328	* @param array $attr Additional attributes.
5329	* @return string
5330	*/
5331	public function post_thumbnail_html( $html, $post_id = 0, $post_thumbnail_id = 0, $size = false, $attr = [] ) {
5332	if ( get_post_type( $post_id ) === 'rl_gallery' ) {
5333	// get featured image type
5334	$image_type = get_post_meta( $post_id, '_rl_featured_image_type', true );
5335
5336	// break if featured image type is media library
5337	if ( ! $image_type \|\| $image_type == 'id' )
5338	return $html;
5339
5340	// get image source
5341	$image_src = $this->get_gallery_image_src( $this->get_featured_image_src( $post_id ) );
5342
5343	// no image?
5344	if ( empty( $image_src ) )
5345	return $html;
5346
5347	// add featured image as background in style tag
5348	$style = 'style="background:url( ' . esc_url( $image_src['url'] ) . ' ) no-repeat center center;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size: cover;"';
5349
5350	$html = str_replace( 'src=', $style . ' src=', $html );
5351
5352	// fix the alt tag (if possible)
5353	$alt = $image_src['alt'];
5354
5355	if ( isset( $attr['alt'] ) )
5356	$alt = $attr['alt'];
5357
5358	if ( $alt ) {
5359	$html = str_replace( '/(alt=\'[^\']+\'\\|alt="[^"]+")/', '', $html );
5360	$html = str_replace( 'src=', ' alt="' . esc_attr( $alt ) . '" src=', $html );
5361	}
5362	}
5363
5364	return $html;
5365	}
5366
5367	/**
5368	* Save the revision meta data. For example, used when saving a preview.
5369	*
5370	* @param int $revision_id
5371	* @return void
5372	*/
5373	public function save_revision( $revision_id ) {
5374	// get revision
5375	$revision = get_post( $revision_id );
5376
5377	// get gallery ID
5378	$post_id = $revision->post_parent;
5379
5380	// is it rl gallery?
5381	if ( get_post_type( $post_id ) !== 'rl_gallery' )
5382	return;
5383
5384	$this->revision_id = $revision_id;
5385
5386	if ( ! wp_is_post_revision( $revision_id ) \|\| ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) \|\| empty( $_POST['rl_gallery'] ) )
5387	return;
5388
5389	// save revisioned meta data
5390	$this->save_gallery( wp_unslash( $_POST ), $revision_id, true );
5391	}
5392
5393	/**
5394	* Update preview link.
5395	*
5396	* @param string $link Preview link
5397	* @return string
5398	*/
5399	public function preview_post_link( $link ) {
5400	// add gallery revision id
5401	if ( property_exists( $this, 'revision_id' ) && ! is_null( $this->revision_id ) ) {
5402	$post_id = wp_get_post_parent_id( $this->revision_id );
5403
5404	// is it valid rl_gallery post?
5405	if ( $post_id && get_post_type( $post_id ) === 'rl_gallery' )
5406	return add_query_arg( 'rl_gallery_revision_id', $this->revision_id, $link );
5407	}
5408
5409	return $link;
5410	}
5411
5412	/**
5413	* Delete gallery revision at shutdown.
5414	*
5415	* @global object $post
5416	*
5417	* @return void
5418	*/
5419	public function shutdown_preview() {
5420	// is it a frontend preview?
5421	if ( is_preview() && isset( $_GET['rl_gallery_revision_id'] ) ) {
5422	global $post;
5423
5424	// cast revision ID
5425	$revision_id = (int) $_GET['rl_gallery_revision_id'];
5426
5427	// is it a valid revision?
5428	if ( get_post_type( $post->ID ) === 'rl_gallery' && wp_is_post_revision( $revision_id ) === (int) $post->ID )
5429	wp_delete_post_revision( $revision_id );
5430	}
5431	}
5432
5433	/**
5434	* Filter gallery meta data needed for frontend gallery preview.
5435	*
5436	* @param mixed $value Meta value to filter
5437	* @param int $object_id
5438	* @param string $meta_key Meta key to filter a value for
5439	* @param bool $single Whether to return a single value
5440	* @return mixed
5441	*/
5442	public function filter_preview_metadata( $value, $object_id, $meta_key, $single ) {
5443	// ignore other post types
5444	if ( get_post_type( $object_id ) !== 'rl_gallery' )
5445	return $value;
5446
5447	// get current post
5448	$post = get_post();
5449
5450	// prepare keys
5451	$keys = array( '_rl_featured_image_type', '_rl_featured_image', '_rl_images_count', '_thumbnail_id' );
5452
5453	// add other metakeys
5454	foreach ( array_keys( $this->tabs ) as $key ) {
5455	$keys[] = '_rl_' . $key;
5456	}
5457
5458	// restrict only to specified data
5459	if ( empty( $post ) \|\| (int) $post->ID !== (int) $object_id \|\| ! in_array( $meta_key, $keys, true ) \|\| $post->post_type === 'revision' )
5460	return $value;
5461
5462	// grab the last autosave
5463	$preview = wp_get_post_autosave( $post->ID );
5464
5465	// invalid revision?
5466	if ( ! is_object( $preview ) )
5467	return $value;
5468
5469	// finally replace metadata
5470	return array( get_post_meta( $preview->ID, $meta_key, $single ) );
5471	}
5472	}
5473