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📝 Edit File: site-logo.php

<?php
/**
 * Server-side rendering of the `core/site-logo` block.
 *
 * @package WordPress
 */

/**
 * Renders the `core/site-logo` block on the server.
 *
 * @since 5.8.0
 *
 * @param array $attributes The block attributes.
 *
 * @return string The render.
 */
function render_block_core_site_logo( $attributes ) {
	$adjust_width_height_filter = static 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.
		$processor = new WP_HTML_Tag_Processor( $custom_logo );
		$processor->next_tag( 'a' );
		if ( 'home' === $processor->get_attribute( 'rel' ) ) {
			$processor->set_attribute( 'aria-label', __( '(Home link, opens in a new tab)' ) );
			$processor->set_attribute( 'target', $attributes['linkTarget'] );
		}
		$custom_logo = $processor->get_updated_html();
	}

$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
 *
 * @since 5.8.0
 */
function register_block_core_site_logo_setting() {
	register_setting(
		'general',
		'site_logo',
		array(
			'show_in_rest' => array(
				'name' => 'site_logo',
			),
			'type'         => 'integer',
			'label'        => __( 'Logo' ),
			'description'  => __( 'Site logo.' ),
		)
	);
}

add_action( 'rest_api_init', 'register_block_core_site_logo_setting', 10 );

/**
 * Register a core site setting for a site icon
 *
 * @since 5.9.0
 */
function register_block_core_site_icon_setting() {
	register_setting(
		'general',
		'site_icon',
		array(
			'show_in_rest' => true,
			'type'         => 'integer',
			'label'        => __( 'Icon' ),
			'description'  => __( 'Site icon.' ),
		)
	);
}

add_action( 'rest_api_init', 'register_block_core_site_icon_setting', 10 );

/**
 * Registers the `core/site-logo` block on the server.
 *
 * @since 5.8.0
 */
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.
 *
 * @since 5.8.0
 *
 * @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.
 *
 * @since 5.8.0
 *
 * @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.
 *
 * @since 5.8.0
 *
 * @global array $_ignore_site_logo_changes
 *
 * @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.
 *
 * @since 5.8.0
 *
 * @global array $_ignore_site_logo_changes
 */
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.
 *
 * @since 5.8.0
 */
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.
 *
 * @since 5.9.0
 *
 * @global array $_ignore_site_logo_changes
 */
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' );

Type	Item Name	Actions
📁	..
📁	archives
📁	audio
📁	avatar
📁	block
📁	button
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📁	comment-content
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📁	comment-edit-link
📁	comment-reply-link
📁	comment-template
📁	comments
📁	comments-pagination
📁	comments-pagination-next
📁	comments-pagination-numbers
📁	comments-pagination-previous
📁	comments-title
📁	cover
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📁	embed
📁	file
📁	footnotes
📁	freeform
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📁	heading
📁	home-link
📁	html
📁	image
📁	latest-comments
📁	latest-posts
📁	legacy-widget
📁	list
📁	list-item
📁	loginout
📁	media-text
📁	missing
📁	more
📁	navigation
📁	navigation-link
📁	navigation-submenu
📁	nextpage
📁	page-list
📁	page-list-item
📁	paragraph
📁	pattern
📁	post-author
📁	post-author-biography
📁	post-author-name
📁	post-comments-form
📁	post-content
📁	post-date
📁	post-excerpt
📁	post-featured-image
📁	post-navigation-link
📁	post-template
📁	post-terms
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📁	preformatted
📁	pullquote
📁	query
📁	query-no-results
📁	query-pagination
📁	query-pagination-next
📁	query-pagination-numbers
📁	query-pagination-previous
📁	query-title
📁	quote
📁	read-more
📁	rss
📁	search
📁	separator
📁	shortcode
📁	site-logo
📁	site-tagline
📁	site-title
📁	social-link
📁	social-links
📁	spacer
📁	table
📁	tag-cloud
📁	template-part
📁	term-description
📁	text-columns
📁	verse
📁	video
📁	widget-group
📄	archives.php
📄	avatar.php
📄	block.php
📄	blocks-json.php
📄	button.php
📄	calendar.php
📄	categories.php
📄	comment-author-name.php
📄	comment-content.php
📄	comment-date.php
📄	comment-edit-link.php
📄	comment-reply-link.php
📄	comment-template.php
📄	comments-pagination-next.php
📄	comments-pagination-numbers.php
📄	comments-pagination-previous.php
📄	comments-pagination.php
📄	comments-title.php
📄	comments.php
📄	cover.php
📄	file.php
📄	footnotes.php
📄	gallery.php
📄	heading.php
📄	home-link.php
📄	image.php
📄	index.php
📄	latest-comments.php
📄	latest-posts.php
📄	legacy-widget.php
📄	list.php
📄	loginout.php
📄	media-text.php
📄	navigation-link.php
📄	navigation-submenu.php
📄	navigation.php
📄	page-list-item.php
📄	page-list.php
📄	pattern.php
📄	post-author-biography.php
📄	post-author-name.php
📄	post-author.php
📄	post-comments-form.php
📄	post-content.php
📄	post-date.php
📄	post-excerpt.php
📄	post-featured-image.php
📄	post-navigation-link.php
📄	post-template.php
📄	post-terms.php
📄	post-title.php
📄	query-no-results.php
📄	query-pagination-next.php
📄	query-pagination-numbers.php
📄	query-pagination-previous.php
📄	query-pagination.php
📄	query-title.php
📄	query.php
📄	read-more.php
📄	require-dynamic-blocks.php
📄	require-static-blocks.php
📄	rss.php
📄	search.php
📄	shortcode.php
📄	site-logo.php
📄	site-tagline.php
📄	site-title.php
📄	social-link.php
📄	tag-cloud.php
📄	template-part.php
📄	term-description.php
📄	widget-group.php