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- <?php
- /**
- * Server-side rendering of the `core/site-logo` block.
- *
- * @package WordPress
- */
- /**
- * Renders the `core/site-logo` block on the server.
- *
- * @param array $attributes The block attributes.
- *
- * @return string The render.
- */
- function render_block_core_site_logo( $attributes ) {
- $adjust_width_height_filter = function ( $image ) use ( $attributes ) {
- if ( empty( $attributes['width'] ) || empty( $image ) || ! $image[1] || ! $image[2] ) {
- return $image;
- }
- $height = (float) $attributes['width'] / ( (float) $image[1] / (float) $image[2] );
- return array( $image[0], (int) $attributes['width'], (int) $height );
- };
- add_filter( 'wp_get_attachment_image_src', $adjust_width_height_filter );
- $custom_logo = get_custom_logo();
- remove_filter( 'wp_get_attachment_image_src', $adjust_width_height_filter );
- if ( empty( $custom_logo ) ) {
- return ''; // Return early if no custom logo is set, avoiding extraneous wrapper div.
- }
- if ( ! $attributes['isLink'] ) {
- // Remove the link.
- $custom_logo = preg_replace( '#<a.*?>(.*?)</a>#i', '\1', $custom_logo );
- }
- if ( $attributes['isLink'] && '_blank' === $attributes['linkTarget'] ) {
- // Add the link target after the rel="home".
- // Add an aria-label for informing that the page opens in a new tab.
- $aria_label = 'aria-label="' . esc_attr__( '(Home link, opens in a new tab)' ) . '"';
- $custom_logo = str_replace( 'rel="home"', 'rel="home" target="' . esc_attr( $attributes['linkTarget'] ) . '"' . $aria_label, $custom_logo );
- }
- $classnames = array();
- if ( empty( $attributes['width'] ) ) {
- $classnames[] = 'is-default-size';
- }
- $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) );
- $html = sprintf( '<div %s>%s</div>', $wrapper_attributes, $custom_logo );
- return $html;
- }
- /**
- * Register a core site setting for a site logo
- */
- function register_block_core_site_logo_setting() {
- register_setting(
- 'general',
- 'site_logo',
- array(
- 'show_in_rest' => array(
- 'name' => 'site_logo',
- ),
- 'type' => 'integer',
- 'description' => __( 'Site logo.' ),
- )
- );
- }
- add_action( 'rest_api_init', 'register_block_core_site_logo_setting', 10 );
- /**
- * Register a core site setting for a site icon
- */
- function register_block_core_site_icon_setting() {
- register_setting(
- 'general',
- 'site_icon',
- array(
- 'show_in_rest' => true,
- 'type' => 'integer',
- 'description' => __( 'Site icon.' ),
- )
- );
- }
- add_action( 'rest_api_init', 'register_block_core_site_icon_setting', 10 );
- /**
- * Registers the `core/site-logo` block on the server.
- */
- function register_block_core_site_logo() {
- register_block_type_from_metadata(
- __DIR__ . '/site-logo',
- array(
- 'render_callback' => 'render_block_core_site_logo',
- )
- );
- }
- add_action( 'init', 'register_block_core_site_logo' );
- /**
- * Overrides the custom logo with a site logo, if the option is set.
- *
- * @param string $custom_logo The custom logo set by a theme.
- *
- * @return string The site logo if set.
- */
- function _override_custom_logo_theme_mod( $custom_logo ) {
- $site_logo = get_option( 'site_logo' );
- return false === $site_logo ? $custom_logo : $site_logo;
- }
- add_filter( 'theme_mod_custom_logo', '_override_custom_logo_theme_mod' );
- /**
- * Updates the site_logo option when the custom_logo theme-mod gets updated.
- *
- * @param mixed $value Attachment ID of the custom logo or an empty value.
- * @return mixed
- */
- function _sync_custom_logo_to_site_logo( $value ) {
- if ( empty( $value ) ) {
- delete_option( 'site_logo' );
- } else {
- update_option( 'site_logo', $value );
- }
- return $value;
- }
- add_filter( 'pre_set_theme_mod_custom_logo', '_sync_custom_logo_to_site_logo' );
- /**
- * Deletes the site_logo when the custom_logo theme mod is removed.
- *
- * @param array $old_value Previous theme mod settings.
- * @param array $value Updated theme mod settings.
- */
- function _delete_site_logo_on_remove_custom_logo( $old_value, $value ) {
- global $_ignore_site_logo_changes;
- if ( $_ignore_site_logo_changes ) {
- return;
- }
- // If the custom_logo is being unset, it's being removed from theme mods.
- if ( isset( $old_value['custom_logo'] ) && ! isset( $value['custom_logo'] ) ) {
- delete_option( 'site_logo' );
- }
- }
- /**
- * Deletes the site logo when all theme mods are being removed.
- */
- function _delete_site_logo_on_remove_theme_mods() {
- global $_ignore_site_logo_changes;
- if ( $_ignore_site_logo_changes ) {
- return;
- }
- if ( false !== get_theme_support( 'custom-logo' ) ) {
- delete_option( 'site_logo' );
- }
- }
- /**
- * Hooks `_delete_site_logo_on_remove_custom_logo` in `update_option_theme_mods_$theme`.
- * Hooks `_delete_site_logo_on_remove_theme_mods` in `delete_option_theme_mods_$theme`.
- *
- * Runs on `setup_theme` to account for dynamically-switched themes in the Customizer.
- */
- function _delete_site_logo_on_remove_custom_logo_on_setup_theme() {
- $theme = get_option( 'stylesheet' );
- add_action( "update_option_theme_mods_$theme", '_delete_site_logo_on_remove_custom_logo', 10, 2 );
- add_action( "delete_option_theme_mods_$theme", '_delete_site_logo_on_remove_theme_mods' );
- }
- add_action( 'setup_theme', '_delete_site_logo_on_remove_custom_logo_on_setup_theme', 11 );
- /**
- * Removes the custom_logo theme-mod when the site_logo option gets deleted.
- */
- function _delete_custom_logo_on_remove_site_logo() {
- global $_ignore_site_logo_changes;
- // Prevent _delete_site_logo_on_remove_custom_logo and
- // _delete_site_logo_on_remove_theme_mods from firing and causing an
- // infinite loop.
- $_ignore_site_logo_changes = true;
- // Remove the custom logo.
- remove_theme_mod( 'custom_logo' );
- $_ignore_site_logo_changes = false;
- }
- add_action( 'delete_option_site_logo', '_delete_custom_logo_on_remove_site_logo' );
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