WordPress/wp-admin/includes/class-wp-site-logo.php

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<?php
/**
* Administration API: WP_Site_Logo class
*
* @package WordPress
* @subpackage Administration
* @since 4.5.0
*/
/**
* Core class used to implement site logo functionality.
*
* @since 4.5.0
*/
class WP_Site_Logo {
/**
* Get current logo settings stored in theme mod.
*
* @since 4.5.0
* @access public
*/
public function __construct() {
add_action( 'wp_head', array( $this, 'head_text_styles' ) );
add_action( 'delete_attachment', array( $this, 'delete_attachment_data' ) );
add_filter( 'image_size_names_choose', array( $this, 'media_manager_image_sizes' ) );
}
/**
* Hide header text on front end if necessary.
*
* @since 4.5.0
* @access public
*/
public function head_text_styles() {
// Bail if our theme supports custom headers.
if ( current_theme_supports( 'custom-header' ) || get_theme_mod( 'site_logo_header_text', true ) ) {
return;
}
// Is Display Header Text unchecked? If so, we need to hide our header text.
?>
<!-- Site Logo: hide header text -->
<style type="text/css">
<?php echo sanitize_html_class( $this->header_text_classes() ); ?> {
position: absolute;
clip: rect(1px, 1px, 1px, 1px);
}
</style>
<?php
}
/**
* Reset the site logo if the current logo is deleted in the media manager.
*
* @since 4.5.0
* @access public
*
* @param int $post_id
*/
public function delete_attachment_data( $post_id ) {
$site_logo_id = get_theme_mod( 'site_logo' );
if ( $site_logo_id && $site_logo_id == $post_id ) {
remove_theme_mod( 'site_logo' );
}
}
/**
* Make custom image sizes available to the media manager.
*
* @since 4.5.0
* @access public
*
* @param array $sizes Image sizes.
* @return array All default and registered custom image sizes.
*/
public function media_manager_image_sizes( $sizes ) {
// Get an array of all registered image sizes.
$intermediate = get_intermediate_image_sizes();
// Have we got anything fun to work with?
if ( is_array( $intermediate ) && ! empty( $intermediate ) ) {
foreach ( $intermediate as $key => $size ) {
// If the size isn't already in the $sizes array, add it.
if ( ! array_key_exists( $size, $sizes ) ) {
$sizes[ $size ] = $size;
}
}
}
return $sizes;
}
/**
* Get header text classes. If not defined in add_theme_support(), defaults from Underscores will be used.
*
* @since 4.5.0
* @access protected
*
* @return string String of classes to hide
*/
protected function header_text_classes() {
$args = get_theme_support( 'site-logo' );
if ( isset( $args[0]['header-text'] ) ) {
// Use any classes defined in add_theme_support().
$classes = $args[0]['header-text'];
} else {
// Otherwise, use these defaults, which will work with any Underscores-based theme.
$classes = array(
'site-title',
'site-description',
);
}
// If we've got an array, reduce them to a string for output.
if ( is_array( $classes ) ) {
$classes = array_map( 'sanitize_html_class', $classes );
$classes = (string) '.' . implode( ', .', $classes );
} else {
$classes = (string) '.' . $classes;
}
return $classes;
}
}
/**
* WP_Site_Logo instance.
*
* @global WP_Site_Logo $wp_site_logo
*/
$GLOBALS['wp_site_logo'] = new WP_Site_Logo;