jetpack / modules / theme-tools / compat / twentynineteen.php

twentynineteen.php in Jetpack – WP Security, Backup, Speed, & Growth 16.2, at modules/theme-tools/compat/twentynineteen.php

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1	<?php
2	/**
3	* Jetpack Compatibility File
4	* See: https://jetpack.com/
5	*
6	* @package automattic/jetpack
7	*/
8
9	if ( ! defined( 'ABSPATH' ) ) {
10	exit( 0 );
11	}
12
13	/**
14	* Add Jetpack theme supports for Twenty Nineteen.
15	*/
16	function twentynineteen_jetpack_setup() {
17
18	/**
19	* Add theme support for Infinite Scroll.
20	*/
21	add_theme_support(
22	'infinite-scroll',
23	array(
24	'type' => 'click',
25	'container' => 'main',
26	'render' => 'twentynineteen_infinite_scroll_render',
27	'footer' => 'page',
28	)
29	);
30	}
31	add_action( 'after_setup_theme', 'twentynineteen_jetpack_setup' );
32
33	/**
34	* Custom render function for Infinite Scroll.
35	*/
36	function twentynineteen_infinite_scroll_render() {
37	while ( have_posts() ) {
38	the_post();
39	get_template_part( 'template-parts/content/content' );
40	}
41	}
42
43	/**
44	* Enqueue Jetpack compat styles for Twenty Nineteen.
45	*/
46	function twentynineteen_init_jetpack() {
47	/**
48	* Add our compat CSS file for Infinite Scroll and custom widget stylings and such.
49	* Set the version equal to filemtime for development builds, and the JETPACK__VERSION for production
50	* or skip it entirely for wpcom.
51	*/
52	if ( ! is_admin() ) {
53	$version = false;
54	if ( method_exists( 'Jetpack', 'is_development_version' ) ) {
55	$version = Jetpack::is_development_version() ? filemtime( plugin_dir_path( __FILE__ ) . 'twentynineteen.css' ) : JETPACK__VERSION;
56	}
57	wp_enqueue_style( 'twentynineteen-jetpack', plugins_url( 'twentynineteen.css', __FILE__ ), array(), $version );
58	wp_style_add_data( 'twentynineteen-jetpack', 'rtl', 'replace' );
59	}
60	}
61	add_action( 'init', 'twentynineteen_init_jetpack' );
62
63	/**
64	* Alter gallery widget default width.
65	*/
66	function twentynineteen_gallery_widget_content_width() {
67	return 390;
68	}
69	add_filter( 'gallery_widget_content_width', 'twentynineteen_gallery_widget_content_width' );
70
71	/**
72	* Adds custom classes to the array of body classes.
73	*
74	* @param array $classes Classes for the body element.
75	* @return array
76	*/
77	function twentynineteen_jetpack_body_classes( $classes ) {
78	// Adds a class if we're in the Customizer.
79	if ( is_customize_preview() ) :
80	$classes[] = 'twentynineteen-customizer';
81	endif;
82
83	return $classes;
84	}
85	add_filter( 'body_class', 'twentynineteen_jetpack_body_classes' );
86
87	/**
88	* Load AMP theme specific hooks for infinite scroll.
89	*
90	* @return void
91	*/
92	function amp_twentynineteen_infinite_scroll_render_hooks() {
93	add_filter( 'jetpack_amp_infinite_footers', 'twentynineteen_amp_infinite_footers', 10, 2 );
94	add_filter( 'jetpack_amp_infinite_output', 'twentynineteen_amp_infinite_output' );
95	add_filter( 'jetpack_amp_infinite_older_posts', 'twentynineteen_amp_infinite_older_posts' );
96	}
97
98	/**
99	* Get the theme specific footers.
100	*
101	* @param array $footers The footers of the themes.
102	* @param string $buffer Contents of the output buffer.
103	*
104	* @return mixed
105	*/
106	function twentynineteen_amp_infinite_footers( $footers, $buffer ) {
107	// Collect the footer wrapper.
108	preg_match(
109	'/<footer id="colophon".*<!-- #colophon -->/s',
110	$buffer,
111	$footer
112	);
113	$footers[] = reset( $footer );
114
115	return $footers;
116	}
117
118	/**
119	* Hide and remove various elements from next page load.
120	*
121	* @param string $buffer Contents of the output buffer.
122	*
123	* @return string
124	*/
125	function twentynineteen_amp_infinite_output( $buffer ) {
126	// Hide site header on next page load.
127	$buffer = preg_replace(
128	'/id="masthead"/',
129	'$0 next-page-hide',
130	$buffer
131	);
132
133	// Hide pagination on next page load.
134	$buffer = preg_replace(
135	'/class=".navigation pagination."/',
136	'$0 next-page-hide hidden',
137	$buffer
138	);
139
140	// Remove the footer as it will be added back to amp next page footer.
141	$buffer = preg_replace(
142	'/<footer id="colophon".*<!-- #colophon -->/s',
143	'',
144	$buffer
145	);
146
147	return $buffer;
148	}
149
150	/**
151	* Filter the AMP infinite scroll older posts button
152	*
153	* @return string
154	*/
155	function twentynineteen_amp_infinite_older_posts() {
156	ob_start();
157	?>
158	<div id="infinite-handle" style="text-align: center;">
159	<span>
160	<a href="{{url}}">
161	<button>
162	<?php esc_html_e( 'Older posts', 'jetpack' ); ?>
163	</button>
164	</a>
165	</span>
166	</div>
167	<?php
168	return ob_get_clean();
169	}
170
171