class-previews.php — Photo Gallery by FooGallery : Responsive Image Gallery, Masonry Gallery & Carousel 3.1.13

foogallery / includes / class-previews.php

foogallery / includes Last commit date

class-previews.php

97 lines

1	<?php
2
3	/**
4	* Class to handle preview scenarios, where rest/ajax calls are made from a gallery that is in preview mode.
5	*/
6	if (! class_exists('FooGallery_Previews')) {
7
8	class FooGallery_Previews
9	{
10
11	/**
12	* FooGallery_Previews constructor.
13	*/
14	function __construct()
15	{
16	//override gallery settings specifically for previews.
17
18	if ($this->should_init()) {
19	$this->safe_init();
20	}
21
22	add_action('rest_api_init', function () {
23	if ($this->should_init()) {
24	$this->safe_init();
25	}
26	});
27	}
28
29	/**
30	* Check if the preview functionality should be initialized.
31	*/
32	private function should_init()
33	{
34	//first, check if we are in the admin
35	if (is_admin()) {
36	return true;
37	}
38
39	//then, check if we are a rest request in admin
40	if (foogallery_is_rest_request_from_admin()) {
41	return true;
42	}
43
44	return false;
45	}
46
47	/**
48	* Safely init the preview functionality.
49	*/
50	private function safe_init()
51	{
52	if (has_filter('foogallery_instance_get_setting')) {
53	return;
54	}
55
56	add_filter('foogallery_instance_get_setting', array($this, 'override_instance_get_setting_for_previews'), 10, 4);
57	add_action('foogallery_preview_before_render', array($this, 'store_preview_data'), 10, 2);
58	}
59
60	/**
61	* Temporarily store the preview data, so it can be picked up by AJAX / Rest requests.
62	*/
63	public function store_preview_data($foogallery_id, $args)
64	{
65	//store transient for 5 minutes
66	set_transient('foogallery_preview_data_' . $foogallery_id, $args, 60 * 5);
67	}
68
69	/**
70	* Override the gallery settings for previews.
71	*/
72	public function override_instance_get_setting_for_previews($value, $key, $default, $gallery)
73	{
74	if (!isset($gallery) \|\| !is_a($gallery, 'FooGallery')) {
75	return $value;
76	}
77
78	$gallery_id = intval($gallery->ID);
79	if ($gallery_id === 0) {
80	return $value;
81	}
82
83	$temp_preview_data = get_transient('foogallery_preview_data_' . $gallery_id);
84
85	if (!is_array($temp_preview_data) \|\| empty($temp_preview_data)) {
86	return $value;
87	}
88
89	if (isset($temp_preview_data[$key])) {
90	return $temp_preview_data[$key];
91	}
92
93	return $value;
94	}
95	}
96	}
97