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<?php
class Jetpack_PWA_Manifest {
/**
* @var Jetpack_PWA_Manifest
*/
private static $__instance = null;
/**
* When this query var is present, display the PWA manifest.
*
* @var string
*/
const PWA_MANIFEST_QUERY_VAR = 'jetpack_app_manifest';
/**
* Singleton implementation
*
* @return Jetpack_PWA_Manifest
*/
public static function instance() {
if ( is_null( self::$__instance ) ) {
self::$__instance = new Jetpack_PWA_Manifest;
}
return self::$__instance;
}
/**
* Registers actions the first time that instance() is called.
*/
private function __construct() {
add_action( 'wp_head', array( $this, 'render_manifest_link' ) );
add_action( 'amp_post_template_head', array( $this, 'render_manifest_link' ) );
add_action( 'template_redirect', array( $this, 'render_manifest_json' ), 2 );
}
function render_manifest_link() {
?>
<link rel="manifest" href="<?php echo esc_url_raw( $this->get_manifest_url() ); ?>">
<meta name="theme-color" content="<?php echo esc_attr( Jetpack_PWA_Helpers::get_theme_color() ); ?>">
<?php
}
public function get_manifest_url() {
return add_query_arg(
self::PWA_MANIFEST_QUERY_VAR, '1', home_url()
);
}
function render_manifest_json() {
// Do not load manifest in multiple locations
if ( is_front_page() && isset( $_GET[ self::PWA_MANIFEST_QUERY_VAR ] ) && $_GET[ self::PWA_MANIFEST_QUERY_VAR ] ) {
@ini_set( 'display_errors', false ); // Display errors can cause the XML to be not well formed.
$theme_color = Jetpack_PWA_Helpers::get_theme_color();
$manifest = array(
'name' => get_bloginfo( 'name' ),
'start_url' => get_home_url(),
'short_name' => substr( get_bloginfo( 'name' ), 0, 12 ),
'display' => 'standalone',
'background_color' => $theme_color,
'theme_color' => $theme_color,
);
if ( $description = get_bloginfo( 'description' ) ) {
$manifest['description'] = $description;
}
$manifest['icons'] = array_map(
array( $this, 'build_icon_object' ),
Jetpack_PWA_Helpers::get_default_manifest_icon_sizes()
);
/**
* Allow overriding the manifest.
*
* @since 5.6.0
*
* @param array $manifest
*/
$manifest = apply_filters( 'jetpack_pwa_manifest', $manifest );
wp_send_json( $manifest );
}
}
function build_icon_object( $size ) {
return array(
'src' => Jetpack_PWA_Helpers::site_icon_url( $size ),
'sizes' => sprintf( '%1$dx%1$d', $size ),
);
}
}
|
GitWeb