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| 1 | <?php |
| 2 | /** |
| 3 | * Adds support for Jetpack Subscribe Overlay feature |
| 4 | * |
| 5 | * @package automattic/jetpack-subscriptions |
| 6 | * @since 13.5 |
| 7 | */ |
| 8 | |
| 9 | if ( ! defined( 'ABSPATH' ) ) { |
| 10 | exit( 0 ); |
| 11 | } |
| 12 | |
| 13 | /** |
| 14 | * Jetpack_Subscribe_Overlay class. |
| 15 | */ |
| 16 | class Jetpack_Subscribe_Overlay { |
| 17 | /** |
| 18 | * Jetpack_Subscribe_Overlay singleton instance. |
| 19 | * |
| 20 | * @var Jetpack_Subscribe_Overlay|null |
| 21 | */ |
| 22 | private static $instance; |
| 23 | |
| 24 | /** |
| 25 | * Jetpack_Subscribe_Overlay instance init. |
| 26 | */ |
| 27 | public static function init() { |
| 28 | if ( self::$instance === null ) { |
| 29 | self::$instance = new Jetpack_Subscribe_Overlay(); |
| 30 | } |
| 31 | |
| 32 | return self::$instance; |
| 33 | } |
| 34 | |
| 35 | const BLOCK_TEMPLATE_PART_SLUG = 'jetpack-subscribe-overlay'; |
| 36 | |
| 37 | /** |
| 38 | * Jetpack_Subscribe_Overlay class constructor. |
| 39 | */ |
| 40 | public function __construct() { |
| 41 | if ( get_option( 'jetpack_subscribe_overlay_enabled', false ) ) { |
| 42 | add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_assets' ) ); |
| 43 | add_action( 'wp_footer', array( $this, 'add_subscribe_overlay_to_frontend' ) ); |
| 44 | } |
| 45 | |
| 46 | add_filter( 'get_block_template', array( $this, 'get_block_template_filter' ), 10, 3 ); |
| 47 | |
| 48 | add_filter( |
| 49 | 'jetpack_options_whitelist', |
| 50 | function ( $options ) { |
| 51 | $options[] = 'jetpack_subscribe_overlay_enabled'; |
| 52 | |
| 53 | return $options; |
| 54 | } |
| 55 | ); |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Returns the block template part ID. |
| 60 | * |
| 61 | * @return string |
| 62 | */ |
| 63 | public static function get_block_template_part_id() { |
| 64 | return get_stylesheet() . '//' . self::BLOCK_TEMPLATE_PART_SLUG; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Makes get_block_template return the WP_Block_Template for the Subscribe Overlay. |
| 69 | * |
| 70 | * @param WP_Block_Template $block_template The block template to be returned. |
| 71 | * @param string $id Template unique identifier (example: theme_slug//template_slug). |
| 72 | * @param string $template_type Template type: `'wp_template'` or '`wp_template_part'`. |
| 73 | * |
| 74 | * @return WP_Block_Template|null |
| 75 | */ |
| 76 | public function get_block_template_filter( $block_template, $id, $template_type ) { |
| 77 | if ( empty( $block_template ) && $template_type === 'wp_template_part' ) { |
| 78 | if ( $id === self::get_block_template_part_id() ) { |
| 79 | return $this->get_template(); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | return $block_template; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Returns a custom template for the Subscribe Overlay. |
| 88 | * |
| 89 | * @return WP_Block_Template |
| 90 | */ |
| 91 | public function get_template() { |
| 92 | $template = new WP_Block_Template(); |
| 93 | $template->theme = get_stylesheet(); |
| 94 | $template->slug = self::BLOCK_TEMPLATE_PART_SLUG; |
| 95 | $template->id = self::get_block_template_part_id(); |
| 96 | $template->area = 'uncategorized'; |
| 97 | $template->content = $this->get_subscribe_overlay_template_content(); |
| 98 | $template->source = 'plugin'; |
| 99 | $template->type = 'wp_template_part'; |
| 100 | $template->title = __( 'Jetpack Subscribe overlay', 'jetpack' ); |
| 101 | $template->status = 'publish'; |
| 102 | $template->has_theme_file = false; |
| 103 | $template->is_custom = true; |
| 104 | $template->description = __( 'An overlay that shows up when someone visits your site.', 'jetpack' ); |
| 105 | |
| 106 | return $template; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Returns the initial content of the Subscribe Overlay template. |
| 111 | * This can then be edited by the user. |
| 112 | * |
| 113 | * @return string |
| 114 | */ |
| 115 | public function get_subscribe_overlay_template_content() { |
| 116 | $home_url = get_home_url(); |
| 117 | $site_tagline = get_bloginfo( 'description' ); |
| 118 | $default_tagline = __( 'Stay informed with curated content and the latest headlines, all delivered straight to your inbox. Subscribe now to stay ahead and never miss a beat!', 'jetpack' ); |
| 119 | $tagline_block = empty( $site_tagline ) |
| 120 | ? '<!-- wp:paragraph {"align":"center","fontSize":"medium"} --><p class="has-text-align-center has-medium-font-size">' . $default_tagline . '</p><!-- /wp:paragraph -->' |
| 121 | : '<!-- wp:site-tagline {"textAlign":"center","fontSize":"medium"} /-->'; |
| 122 | $skip_to_content = __( 'Skip to content', 'jetpack' ); |
| 123 | $group_block_name = esc_attr__( 'Subscribe overlay container', 'jetpack' ); |
| 124 | |
| 125 | return <<<HTML |
| 126 | <!-- wp:group {"metadata":{"name":"$group_block_name"},"style":{"spacing":{"padding":{"top":"0","bottom":"0","left":"0","right":"0"}}},"layout":{"type":"constrained","contentSize":"400px"}} --> |
| 127 | <div class="wp-block-group" style="padding-top:0;padding-right:0;padding-bottom:0;padding-left:0"> |
| 128 | <!-- wp:site-logo {"width":90,"isLink":false,"shouldSyncIcon":true,"align":"center","className":"is-style-rounded"} /--> |
| 129 | |
| 130 | <!-- wp:site-title {"textAlign":"center","isLink":false,"fontSize":"x-large"} /--> |
| 131 | |
| 132 | $tagline_block |
| 133 | |
| 134 | <!-- wp:jetpack/subscriptions {"appSource":"subscribe-overlay"} /--> |
| 135 | |
| 136 | <!-- wp:paragraph {"align":"center","className":"jetpack-subscribe-overlay__to-content"} --> |
| 137 | <p class="has-text-align-center jetpack-subscribe-overlay__to-content"><a href="$home_url">$skip_to_content ↓</a></p> |
| 138 | <!-- /wp:paragraph --> |
| 139 | </div> |
| 140 | <!-- /wp:group --> |
| 141 | HTML; |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Enqueues JS to load overlay. |
| 146 | * |
| 147 | * @return void |
| 148 | */ |
| 149 | public function enqueue_assets() { |
| 150 | if ( $this->should_user_see_overlay() ) { |
| 151 | wp_enqueue_style( 'subscribe-overlay-css', plugins_url( 'subscribe-overlay.css', __FILE__ ), array(), JETPACK__VERSION ); |
| 152 | wp_enqueue_script( 'subscribe-overlay-js', plugins_url( 'subscribe-overlay.js', __FILE__ ), array( 'wp-dom-ready' ), JETPACK__VERSION, true ); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Adds overlay with Subscribe Overlay content. |
| 158 | * |
| 159 | * @return void |
| 160 | */ |
| 161 | public function add_subscribe_overlay_to_frontend() { |
| 162 | if ( $this->should_user_see_overlay() ) { ?> |
| 163 | <div class="jetpack-subscribe-overlay"> |
| 164 | <div class="jetpack-subscribe-overlay__close"> |
| 165 | <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"> |
| 166 | <path d="M5.40456 5L19 19M5 19L18.5954 5" stroke="currentColor" stroke-width="1.5"/> |
| 167 | </svg> |
| 168 | </div> |
| 169 | <div class="jetpack-subscribe-overlay__content"> |
| 170 | <?php block_template_part( self::BLOCK_TEMPLATE_PART_SLUG ); ?> |
| 171 | </div> |
| 172 | </div> |
| 173 | <?php |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Returns true if a site visitor should see |
| 179 | * the Subscribe Overlay. |
| 180 | * |
| 181 | * @return bool |
| 182 | */ |
| 183 | public function should_user_see_overlay() { |
| 184 | // Only show when viewing frontend. |
| 185 | if ( is_admin() ) { |
| 186 | return false; |
| 187 | } |
| 188 | |
| 189 | // Needed because Elementor editor makes is_admin() return false |
| 190 | // See https://coreysalzano.com/wordpress/why-elementor-disobeys-is_admin/ |
| 191 | // Ignore nonce warning as just checking if is set |
| 192 | // phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 193 | if ( isset( $_GET['elementor-preview'] ) ) { |
| 194 | return false; |
| 195 | } |
| 196 | |
| 197 | // Don't show when previewing blog posts or site's theme |
| 198 | // phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 199 | if ( isset( $_GET['preview'] ) || isset( $_GET['theme_preview'] ) || isset( $_GET['customize_preview'] ) || isset( $_GET['hide_banners'] ) ) { |
| 200 | return false; |
| 201 | } |
| 202 | |
| 203 | // Don't show if one of subscribe query params is set. |
| 204 | // They are set when user submits the subscribe form. |
| 205 | // The nonce is checked elsewhere before redirect back to this page with query params. |
| 206 | // phpcs:ignore WordPress.Security.NonceVerification.Recommended |
| 207 | if ( isset( $_GET['subscribe'] ) || isset( $_GET['blogsub'] ) ) { |
| 208 | return false; |
| 209 | } |
| 210 | |
| 211 | // Don't show if user is subscribed to blog. |
| 212 | require_once __DIR__ . '/../views.php'; |
| 213 | if ( ! class_exists( 'Jetpack_Memberships' ) || Jetpack_Memberships::is_current_user_subscribed() ) { |
| 214 | return false; |
| 215 | } |
| 216 | |
| 217 | return is_home() || is_front_page(); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | Jetpack_Subscribe_Overlay::init(); |
| 222 | |
| 223 | add_action( |
| 224 | 'rest_api_switched_to_blog', |
| 225 | function () { |
| 226 | Jetpack_Subscribe_Overlay::init(); |
| 227 | } |
| 228 | ); |