<?php
/**
* Jetpack Compatibility File
* See: https://jetpack.com/
*
* @package automattic/jetpack
*/
/**
* Add Jetpack theme supports for Twenty Nineteen.
*/
function twentynineteen_jetpack_setup() {
/**
* Add theme support for Infinite Scroll.
*/
add_theme_support(
'infinite-scroll',
array(
'type' => 'click',
'container' => 'main',
'render' => 'twentynineteen_infinite_scroll_render',
'footer' => 'page',
)
);
/**
* Add theme support for Responsive Videos.
*/
add_theme_support( 'jetpack-responsive-videos' );
/**
* Add theme support for geo-location.
*/
add_theme_support( 'jetpack-geo-location' );
/**
* Add theme support for Content Options.
*/
add_theme_support(
'jetpack-content-options',
array(
'blog-display' => array( 'content', 'excerpt' ),
'post-details' => array(
'stylesheet' => 'twentynineteen-style',
'date' => '.posted-on',
'categories' => '.cat-links',
'tags' => '.tags-links',
'author' => '.byline',
'comment' => '.comments-link',
),
'featured-images' => array(
'archive' => true,
'post' => true,
'page' => true,
),
)
);
}
add_action( 'after_setup_theme', 'twentynineteen_jetpack_setup' );
/**
* Custom render function for Infinite Scroll.
*/
function twentynineteen_infinite_scroll_render() {
while ( have_posts() ) {
the_post();
get_template_part( 'template-parts/content/content' );
}
}
/**
* Enqueue Jetpack compat styles for Twenty Nineteen.
*/
function twentynineteen_init_jetpack() {
/**
* Add our compat CSS file for Infinite Scroll and custom widget stylings and such.
* Set the version equal to filemtime for development builds, and the JETPACK__VERSION for production
* or skip it entirely for wpcom.
*/
if ( ! is_admin() ) {
$version = false;
if ( method_exists( 'Jetpack', 'is_development_version' ) ) {
$version = Jetpack::is_development_version() ? filemtime( plugin_dir_path( __FILE__ ) . 'twentynineteen.css' ) : JETPACK__VERSION;
}
wp_enqueue_style( 'twentynineteen-jetpack', plugins_url( 'twentynineteen.css', __FILE__ ), array(), $version );
wp_style_add_data( 'twentynineteen-jetpack', 'rtl', 'replace' );
}
}
add_action( 'init', 'twentynineteen_init_jetpack' );
/**
* Alter gallery widget default width.
*/
function twentynineteen_gallery_widget_content_width() {
return 390;
}
add_filter( 'gallery_widget_content_width', 'twentynineteen_gallery_widget_content_width' );
/**
* Alter featured-image default visibility for content-options.
*/
function twentynineteen_override_post_thumbnail() {
$options = get_theme_support( 'jetpack-content-options' );
$featured_images = ( ! empty( $options[0]['featured-images'] ) ) ? $options[0]['featured-images'] : null;
$settings = array(
'post-default' => ( isset( $featured_images['post-default'] ) && false === $featured_images['post-default'] ) ? '' : 1,
'page-default' => ( isset( $featured_images['page-default'] ) && false === $featured_images['page-default'] ) ? '' : 1,
);
$settings = array_merge(
$settings,
array(
'post-option' => get_option( 'jetpack_content_featured_images_post', $settings['post-default'] ),
'page-option' => get_option( 'jetpack_content_featured_images_page', $settings['page-default'] ),
)
);
if ( ( ! $settings['post-option'] && is_single() )
|| ( ! $settings['page-option'] && is_singular() && is_page() ) ) {
return false;
} else {
return ! post_password_required() && ! is_attachment() && has_post_thumbnail();
}
}
add_filter( 'twentynineteen_can_show_post_thumbnail', 'twentynineteen_override_post_thumbnail', 10, 2 );
/**
* Adds custom classes to the array of body classes.
*
* @param array $classes Classes for the body element.
* @return array
*/
function twentynineteen_jetpack_body_classes( $classes ) {
// Adds a class if we're in the Customizer.
if ( is_customize_preview() ) :
$classes[] = 'twentynineteen-customizer';
endif;
return $classes;
}
add_filter( 'body_class', 'twentynineteen_jetpack_body_classes' );
/**
* Load AMP theme specific hooks for infinite scroll.
*
* @return void
*/
function amp_twentynineteen_infinite_scroll_render_hooks() {
add_filter( 'jetpack_amp_infinite_footers', 'twentynineteen_amp_infinite_footers', 10, 2 );
add_filter( 'jetpack_amp_infinite_output', 'twentynineteen_amp_infinite_output' );
add_filter( 'jetpack_amp_infinite_older_posts', 'twentynineteen_amp_infinite_older_posts' );
}
/**
* Get the theme specific footers.
*
* @param array $footers The footers of the themes.
* @param string $buffer Contents of the output buffer.
*
* @return mixed
*/
function twentynineteen_amp_infinite_footers( $footers, $buffer ) {
// Collect the footer wrapper.
preg_match(
'/<footer id="colophon".*<!-- #colophon -->/s',
$buffer,
$footer
);
$footers[] = reset( $footer );
return $footers;
}
/**
* Hide and remove various elements from next page load.
*
* @param string $buffer Contents of the output buffer.
*
* @return string
*/
function twentynineteen_amp_infinite_output( $buffer ) {
// Hide site header on next page load.
$buffer = preg_replace(
'/id="masthead"/',
'$0 next-page-hide',
$buffer
);
// Hide pagination on next page load.
$buffer = preg_replace(
'/class=".*navigation pagination.*"/',
'$0 next-page-hide hidden',
$buffer
);
// Remove the footer as it will be added back to amp next page footer.
$buffer = preg_replace(
'/<footer id="colophon".*<!-- #colophon -->/s',
'',
$buffer
);
return $buffer;
}
/**
* Filter the AMP infinite scroll older posts button
*
* @return string
*/
function twentynineteen_amp_infinite_older_posts() {
ob_start();
?>
<div id="infinite-handle" style="text-align: center;">
<span>
<a href="{{url}}">
<button>
<?php esc_html_e( 'Older posts', 'jetpack' ); ?>
</button>
</a>
</span>
</div>
<?php
return ob_get_clean();
}