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<?php
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/**
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* Our Site Logo class for managing a theme-agnostic logo through the Customizer.
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*
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* @package Jetpack
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*/
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class Site_Logo {
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/**
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* Stores our single instance.
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*/
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private static $instance;
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/**
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* Stores our current logo settings.
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*/
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public $logo;
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/**
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* Return our instance, creating a new one if necessary.
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*
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* @uses Site_Logo::$instance
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* @return object Site_Logo
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*/
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public static function instance() {
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if ( ! isset( self::$instance ) ) {
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self::$instance = new Site_Logo();
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self::$instance->register_hooks();
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}
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return self::$instance;
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}
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/**
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* Get our current logo settings stored in options.
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*
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* @uses get_option()
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*/
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private function __construct() {
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$this->logo = get_option( 'site_logo', null );
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}
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/**
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* Register our actions and filters.
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*
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* @uses Site_Logo::head_text_styles()
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* @uses Site_Logo::customize_register()
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* @uses Site_Logo::preview_enqueue()
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* @uses Site_Logo::body_classes()
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* @uses Site_Logo::media_manager_image_sizes()
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* @uses add_action
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* @uses add_filter
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*/
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public function register_hooks() {
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// This would only happen if a theme supports BOTH site-logo and custom-logo for some reason
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if ( current_theme_supports( 'custom-logo' ) ) {
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return;
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}
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add_action( 'wp_head', array( $this, 'head_text_styles' ) );
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add_action( 'customize_register', array( $this, 'customize_register' ) );
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add_action( 'customize_preview_init', array( $this, 'preview_enqueue' ) );
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add_action( 'delete_attachment', array( $this, 'reset_on_attachment_delete' ) );
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add_filter( 'body_class', array( $this, 'body_classes' ) );
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add_filter( 'image_size_names_choose', array( $this, 'media_manager_image_sizes' ) );
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add_filter( 'display_media_states', array( $this, 'add_media_state' ) );
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}
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/**
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* Add our logo uploader to the Customizer.
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*
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* @param object $wp_customize Customizer object.
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* @uses current_theme_supports()
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* @uses current_theme_supports()
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* @uses WP_Customize_Manager::add_setting()
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* @uses WP_Customize_Manager::add_control()
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* @uses Site_Logo::sanitize_checkbox()
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*/
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public function customize_register( $wp_customize ) {
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// Include our custom control.
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require dirname( __FILE__ ) . '/class-site-logo-control.php';
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// Add a setting to hide header text if the theme isn't supporting the feature itself
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if ( ! current_theme_supports( 'custom-header' ) ) {
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$wp_customize->add_setting(
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'site_logo_header_text',
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array(
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'default' => 1,
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'sanitize_callback' => array( $this, 'sanitize_checkbox' ),
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'transport' => 'postMessage',
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)
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);
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$wp_customize->add_control(
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new WP_Customize_Control(
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$wp_customize,
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'site_logo_header_text',
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array(
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'label' => __( 'Display Header Text', 'jetpack' ),
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'section' => 'title_tagline',
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'settings' => 'site_logo_header_text',
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'type' => 'checkbox',
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)
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)
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);
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}
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// Add the setting for our logo value.
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$wp_customize->add_setting(
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'site_logo',
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array(
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'capability' => 'manage_options',
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'default' => array(
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'id' => 0,
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'sizes' => array(),
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'url' => false,
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),
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'sanitize_callback' => array( $this, 'sanitize_logo_setting' ),
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'transport' => 'postMessage',
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'type' => 'option',
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)
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);
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// Add our image uploader.
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$wp_customize->add_control(
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new Site_Logo_Image_Control(
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$wp_customize,
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'site_logo',
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array(
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'label' => __( 'Logo', 'jetpack' ),
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'section' => 'title_tagline',
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'settings' => 'site_logo',
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)
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)
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);
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}
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/**
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* Enqueue scripts for the Customizer live preview.
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*
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* @uses wp_enqueue_script()
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* @uses plugins_url()
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* @uses current_theme_supports()
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* @uses Site_Logo::header_text_classes()
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* @uses wp_localize_script()
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*/
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public function preview_enqueue() {
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wp_enqueue_script( 'site-logo-preview', plugins_url( '../js/site-logo.js', __FILE__ ), array( 'media-views' ), '', true );
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// Don't bother passing in header text classes if the theme supports custom headers.
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if ( ! current_theme_supports( 'custom-header' ) ) {
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$classes = jetpack_sanitize_header_text_classes( $this->header_text_classes() );
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wp_enqueue_script( 'site-logo-header-text', plugins_url( '../js/site-logo-header-text.js', __FILE__ ), array( 'media-views' ), '', true );
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wp_localize_script( 'site-logo-header-text', 'site_logo_header_classes', $classes );
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}
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}
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/**
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* Get header text classes. If not defined in add_theme_support(), defaults from Underscores will be used.
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*
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* @uses get_theme_support
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* @return string String of classes to hide
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*/
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public function header_text_classes() {
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$args = get_theme_support( 'site-logo' );
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if ( isset( $args[0]['header-text'] ) ) {
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// Use any classes defined in add_theme_support().
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$classes = $args[0]['header-text'];
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} else {
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// Otherwise, use these defaults, which will work with any Underscores-based theme.
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$classes = array(
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'site-title',
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'site-description',
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);
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}
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// If we've got an array, reduce them to a string for output
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if ( is_array( $classes ) ) {
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$classes = (string) '.' . implode( ', .', $classes );
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} else {
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$classes = (string) '.' . $classes;
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}
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return $classes;
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}
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/**
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* Hide header text on front-end if necessary.
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*
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* @uses current_theme_supports()
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* @uses get_theme_mod()
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* @uses Site_Logo::header_text_classes()
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* @uses esc_html()
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*/
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public function head_text_styles() {
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// Bail if our theme supports custom headers.
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if ( current_theme_supports( 'custom-header' ) ) {
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return;
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}
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// Is Display Header Text unchecked? If so, we need to hide our header text.
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if ( ! get_theme_mod( 'site_logo_header_text', 1 ) ) {
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$classes = $this->header_text_classes();
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?>
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<!-- Site Logo: hide header text -->
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<style type="text/css">
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<?php echo jetpack_sanitize_header_text_classes( $classes ); ?> {
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position: absolute;
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clip: rect(1px, 1px, 1px, 1px);
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}
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</style>
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<?php
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}
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}
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/**
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* Determine image size to use for the logo.
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*
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* @uses get_theme_support()
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* @return string Size specified in add_theme_support declaration, or 'thumbnail' default
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*/
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public function theme_size() {
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$args = get_theme_support( 'site-logo' );
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$valid_sizes = get_intermediate_image_sizes();
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// Add 'full' to the list of accepted values.
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$valid_sizes[] = 'full';
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// If the size declared in add_theme_support is valid, use it; otherwise, just go with 'thumbnail'.
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$size = ( isset( $args[0]['size'] ) && in_array( $args[0]['size'], $valid_sizes ) ) ? $args[0]['size'] : 'thumbnail';
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return $size;
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}
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/**
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* Make custom image sizes available to the media manager.
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*
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* @param array $sizes
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* @uses get_intermediate_image_sizes()
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* @return array All default and registered custom image sizes.
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*/
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public function media_manager_image_sizes( $sizes ) {
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// Get an array of all registered image sizes.
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$intermediate = get_intermediate_image_sizes();
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// Have we got anything fun to work with?
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if ( is_array( $intermediate ) && ! empty( $intermediate ) ) {
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foreach ( $intermediate as $key => $size ) {
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// If the size isn't already in the $sizes array, add it.
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if ( ! array_key_exists( $size, $sizes ) ) {
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$sizes[ $size ] = $size;
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}
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}
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}
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return $sizes;
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}
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/**
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* Add site logos to media states in the Media Manager.
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*
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* @return array The current attachment's media states.
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*/
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public function add_media_state( $media_states ) {
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// Only bother testing if we have a site logo set.
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if ( $this->has_site_logo() ) {
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global $post;
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// If our attachment ID and the site logo ID match, this image is the site logo.
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if ( $post->ID == $this->logo['id'] ) {
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$media_states[] = __( 'Site Logo', 'jetpack' );
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}
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}
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return $media_states;
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}
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/**
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* Reset the site logo if the current logo is deleted in the media manager.
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*
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* @param int $site_id
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* @uses Site_Logo::remove_site_logo()
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*/
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public function reset_on_attachment_delete( $post_id ) {
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if ( $this->logo['id'] == $post_id ) {
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$this->remove_site_logo();
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}
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}
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/**
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* Determine if a site logo is assigned or not.
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*
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* @uses Site_Logo::$logo
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* @return boolean True if there is an active logo, false otherwise
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*/
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public function has_site_logo() {
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return ( isset( $this->logo['id'] ) && 0 !== $this->logo['id'] ) ? true : false;
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}
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/**
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* Reset the site logo option to zero (empty).
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*
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* @uses update_option()
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*/
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public function remove_site_logo() {
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update_option(
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'site_logo',
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array(
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'id' => (int) 0,
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'sizes' => array(),
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'url' => '',
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)
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);
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}
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/**
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* Adds custom classes to the array of body classes.
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*
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* @uses Site_Logo::has_site_logo()
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* @return array Array of <body> classes
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*/
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public function body_classes( $classes ) {
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// Add a class if a Site Logo is active
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if ( $this->has_site_logo() ) {
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$classes[] = 'has-site-logo';
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}
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return $classes;
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}
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/**
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* Sanitize our header text Customizer setting.
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*
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* @param $input
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* @return mixed 1 if checked, empty string if not checked.
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*/
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public function sanitize_checkbox( $input ) {
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return ( 1 == $input ) ? 1 : '';
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}
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/**
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* Validate and sanitize a new site logo setting.
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*
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* @param $input
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* @return mixed 1 if checked, empty string if not checked.
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*/
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public function sanitize_logo_setting( $input ) {
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$input['id'] = absint( $input['id'] );
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$input['url'] = esc_url_raw( $input['url'] );
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// If the new setting doesn't point to a valid attachment, just reset the whole thing.
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if ( false == wp_get_attachment_image_src( $input['id'] ) ) {
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$input = array(
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'id' => (int) 0,
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'sizes' => array(),
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'url' => '',
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);
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}
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return $input;
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}
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}
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/**
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* Allow themes and plugins to access Site_Logo methods and properties.
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*
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* @uses Site_Logo::instance()
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* @return object Site_Logo
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*/
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function site_logo() {
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return Site_Logo::instance();
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}
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/**
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* One site logo, please.
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*/
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site_logo();
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