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| 1 | <?php |
| 2 | namespace Automattic\Jetpack_Boost\Lib\Critical_CSS; |
| 3 | |
| 4 | class Admin_Bar_Compatibility { |
| 5 | |
| 6 | /** |
| 7 | * Enforces the admin bar stylesheet to load late and synchronously |
| 8 | * when the admin bar is present on the page. |
| 9 | */ |
| 10 | public static function init() { |
| 11 | |
| 12 | // Force the Admin Bar to render in the footer. |
| 13 | remove_action( 'wp_body_open', 'wp_admin_bar_render', '0' ); |
| 14 | |
| 15 | add_filter( 'jetpack_boost_async_style', array( __CLASS__, 'enable_asynchronous_admin_bar' ), 10, 2 ); |
| 16 | add_action( 'wp_before_admin_bar_render', array( __CLASS__, 'force_admin_bar_stylesheet' ) ); |
| 17 | add_action( 'wp_head', array( __CLASS__, 'dequeue_admin_bar' ), 0 ); |
| 18 | } |
| 19 | |
| 20 | /** |
| 21 | * Load the admin bar CSS synchronously. |
| 22 | * |
| 23 | * @param bool $is_async Whether admin bar is async. |
| 24 | * @param string $handle Asset handle. |
| 25 | * |
| 26 | * @return bool |
| 27 | */ |
| 28 | public static function enable_asynchronous_admin_bar( $is_async, $handle ) { |
| 29 | |
| 30 | if ( 'admin-bar' === $handle ) { |
| 31 | $is_async = false; |
| 32 | } |
| 33 | |
| 34 | return $is_async; |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Dequeue the admin bar stylesheet, so that it's not printed early. |
| 39 | * |
| 40 | * @see wp_head |
| 41 | */ |
| 42 | public static function dequeue_admin_bar() { |
| 43 | wp_dequeue_style( 'admin-bar' ); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Force the admin bar stylesheet to print right before the admin bar markup. |
| 48 | * |
| 49 | * @see wp_before_admin_bar_render |
| 50 | */ |
| 51 | public static function force_admin_bar_stylesheet() { |
| 52 | wp_print_styles( 'admin-bar' ); |
| 53 | } |
| 54 | } |