wordpress-seo / src / deprecated / frontend / breadcrumbs.php

breadcrumbs.php in Yoast SEO – Advanced SEO with real-time guidance and built-in AI 18.5.1, at src/deprecated/frontend/breadcrumbs.php

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1	<?php
2	/**
3	* Backwards compatibility class for breadcrumbs.
4	*
5	* @package Yoast\YoastSEO\Backwards_Compatibility
6	*/
7
8	use Yoast\WP\SEO\Memoizers\Meta_Tags_Context_Memoizer;
9	use Yoast\WP\SEO\Presenters\Breadcrumbs_Presenter;
10	use Yoast\WP\SEO\Surfaces\Helpers_Surface;
11
12	/**
13	* Class WPSEO_Breadcrumbs
14	*
15	* @codeCoverageIgnore Because of deprecation.
16	*/
17	class WPSEO_Breadcrumbs {
18
19	/**
20	* Instance of this class.
21	*
22	* @var WPSEO_Breadcrumbs
23	*/
24	public static $instance;
25
26	/**
27	* Last used 'before' string.
28	*
29	* @var string
30	*/
31	public static $before = '';
32
33	/**
34	* Last used 'after' string.
35	*
36	* @var string
37	*/
38	public static $after = '';
39
40	/**
41	* The memoizer for the meta tags context.
42	*
43	* @var Meta_Tags_Context_Memoizer
44	*/
45	protected $context_memoizer;
46
47	/**
48	* The helpers surface.
49	*
50	* @var Helpers_Surface
51	*/
52	protected $helpers;
53
54	/**
55	* The replace vars helper
56	*
57	* @var WPSEO_Replace_Vars
58	*/
59	protected $replace_vars;
60
61	/**
62	* WPSEO_Breadcrumbs constructor.
63	*/
64	public function __construct() {
65	$this->context_memoizer = YoastSEO()->classes->get( Meta_Tags_Context_Memoizer::class );
66	$this->helpers = YoastSEO()->classes->get( Helpers_Surface::class );
67	$this->replace_vars = YoastSEO()->classes->get( WPSEO_Replace_Vars::class );
68	}
69
70	/**
71	* Get breadcrumb string using the singleton instance of this class.
72	*
73	* @param string $before Optional string to prepend.
74	* @param string $after Optional string to append.
75	* @param bool $display Echo or return flag.
76	*
77	* @return string Returns the breadcrumbs as a string.
78	*/
79	public static function breadcrumb( $before = '', $after = '', $display = true ) {
80	// Remember the last used before/after for use in case the object goes __toString().
81	self::$before = $before;
82	self::$after = $after;
83	$output = $before . self::get_instance()->render() . $after;
84
85	if ( $display === true ) {
86	echo $output;
87
88	return '';
89	}
90
91	return $output;
92	}
93
94	/**
95	* Magic method to use in case the class would be send to string.
96	*
97	* @return string The rendered breadcrumbs.
98	*/
99	public function __toString() {
100	return self::$before . $this->render() . self::$after;
101	}
102
103	/**
104	* Retrieves an instance of the class.
105	*
106	* @return static The instance.
107	*/
108	public static function get_instance() {
109	if ( is_null( self::$instance ) ) {
110	self::$instance = new self();
111	}
112
113	return self::$instance;
114	}
115
116	/**
117	* Returns the collected links for the breadcrumbs.
118	*
119	* @return array The collected links.
120	*/
121	public function get_links() {
122	$context = $this->context_memoizer->for_current_page();
123
124	return $context->presentation->breadcrumbs;
125	}
126
127	/**
128	* Renders the breadcrumbs.
129	*
130	* @return string The rendered breadcrumbs.
131	*/
132	private function render() {
133	$presenter = new Breadcrumbs_Presenter();
134	$context = $this->context_memoizer->for_current_page();
135	/** This filter is documented in src/integrations/front-end-integration.php */
136	$presentation = apply_filters( 'wpseo_frontend_presentation', $context->presentation, $context );
137	$presenter->presentation = $presentation;
138	$presenter->replace_vars = $this->replace_vars;
139	$presenter->helpers = $this->helpers;
140
141	return $presenter->present();
142	}
143	}
144