1<?php
2/**
3 * Customize API: WP_Customize_Header_Image_Setting class
4 *
5 * @package WordPress
6 * @subpackage Customize
7 * @since 4.4.0
8 */
9
10/**
11 * A setting that is used to filter a value, but will not save the results.
12 *
13 * Results should be properly handled using another setting or callback.
14 *
15 * @since 3.4.0
16 *
17 * @see WP_Customize_Setting
18 */
19final class WP_Customize_Header_Image_Setting extends WP_Customize_Setting {
20	public $id = 'header_image_data';
21
22	/**
23	 * @since 3.4.0
24	 *
25	 * @global Custom_Image_Header $custom_image_header
26	 *
27	 * @param $value
28	 */
29	public function update( $value ) {
30		global $custom_image_header;
31
32		// If _custom_header_background_just_in_time() fails to initialize $custom_image_header when not is_admin().
33		if ( empty( $custom_image_header ) ) {
34			require_once ABSPATH . 'wp-admin/includes/class-custom-image-header.php';
35			$args                   = get_theme_support( 'custom-header' );
36			$admin_head_callback    = isset( $args[0]['admin-head-callback'] ) ? $args[0]['admin-head-callback'] : null;
37			$admin_preview_callback = isset( $args[0]['admin-preview-callback'] ) ? $args[0]['admin-preview-callback'] : null;
38			$custom_image_header    = new Custom_Image_Header( $admin_head_callback, $admin_preview_callback );
39		}
40
41		// If the value doesn't exist (removed or random),
42		// use the header_image value.
43		if ( ! $value ) {
44			$value = $this->manager->get_setting( 'header_image' )->post_value();
45		}
46
47		if ( is_array( $value ) && isset( $value['choice'] ) ) {
48			$custom_image_header->set_header_image( $value['choice'] );
49		} else {
50			$custom_image_header->set_header_image( $value );
51		}
52	}
53}
54