<?php

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/**

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* Theme Tools: Site Logo.

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*

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* @see https://jetpack.com/support/site-logo/

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*

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* This feature will only be activated for themes that declare their support.

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* This can be done by adding code similar to the following during the

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* 'after_setup_theme' action:

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*

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* $args = array(

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* 'header-text' => array(

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* 'site-title',

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* 'site-description',

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* ),

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* 'size' => 'medium',

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* );

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* add_theme_support( 'site-logo', $args );

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*

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* @package automattic/jetpack

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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/**

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* Activate the Site Logo plugin.

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*

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* @uses current_theme_supports()

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* @since 3.2.0

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* @since 9.9.0 Uses Core site_logo option format universally.

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*/

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function site_logo_init() {

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// Only load our code if our theme declares support, and the standalone plugin is not activated.

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if ( current_theme_supports( 'site-logo' ) && ! class_exists( 'Site_Logo', false ) ) {

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_deprecated_hook( 'site-logo', '13.4', 'custom-logo', 'Jetpack no longer supports site-logo feature. Add custom-logo support to your theme instead: https://developer.wordpress.org/themes/functionality/custom-logo/' );

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// Load our class for namespacing.

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if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {

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// wpcom handles the image sizes differently.

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require_once WPMU_PLUGIN_DIR . '/site-logo/inc/class-site-logo.php';

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} else {

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require __DIR__ . '/site-logo/inc/class-site-logo.php';

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}

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// Load template tags.

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require __DIR__ . '/site-logo/inc/functions.php';

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// Load backwards-compatible template tags.

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require __DIR__ . '/site-logo/inc/compat.php';

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}

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}

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add_action( 'init', 'site_logo_init' );

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/**

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* When switching from a legacy theme that uses `site-logo` to a theme that uses `custom-logo`,

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* update the theme's custom logo if it doesn't already have one.

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*

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* @return void

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*/

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function jetpack_update_custom_logo_from_site_logo() {

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$site_logo = get_option( 'site_logo' );

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if ( current_theme_supports( 'custom-logo' ) && ! get_theme_mod( 'custom_logo' ) && $site_logo ) {

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set_theme_mod( 'custom_logo', $site_logo );

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}

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}

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add_action( 'after_switch_theme', 'jetpack_update_custom_logo_from_site_logo', 10, 0 );

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/**

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* Transforms the legacy site_logo array, when present, into an attachment ID.

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*

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* The attachment ID is the format used for the site_logo option by the Site Logo block,

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* and the updated Jetpack site-logo feature.

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*

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* @since 9.9.0

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*

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* @param int|array|WP_Error $site_logo Option.

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* @return int|WP_Error

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*/

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function jetpack_site_logo_block_compat( $site_logo ) {

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if ( is_array( $site_logo ) && isset( $site_logo['id'] ) ) {

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remove_filter( 'option_site_logo', 'jetpack_site_logo_block_compat', 1 );

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update_option( 'site_logo', $site_logo['id'] );

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return $site_logo['id'];

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}

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return $site_logo;

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}

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add_filter( 'option_site_logo', 'jetpack_site_logo_block_compat', 1 );

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