Front.php
568 lines
| 1 | <?php |
| 2 | /** |
| 3 | * The public-facing functionality of the plugin. |
| 4 | * |
| 5 | * Defines hooks to enqueue the public-specific stylesheet and JavaScript. |
| 6 | * |
| 7 | * @package WordPressPopularPosts |
| 8 | * @subpackage WordPressPopularPosts/Front |
| 9 | * @author Hector Cabrera <me@cabrerahector.com> |
| 10 | */ |
| 11 | |
| 12 | namespace WordPressPopularPosts\Front; |
| 13 | |
| 14 | use WordPressPopularPosts\Helper; |
| 15 | use WordPressPopularPosts\Output; |
| 16 | use WordPressPopularPosts\Query; |
| 17 | |
| 18 | class Front { |
| 19 | |
| 20 | /** |
| 21 | * Plugin options. |
| 22 | * |
| 23 | * @var array $config |
| 24 | * @access private |
| 25 | */ |
| 26 | private $config; |
| 27 | |
| 28 | /** |
| 29 | * Translate object. |
| 30 | * |
| 31 | * @var \WordPressPopularPosts\Translate $translate |
| 32 | * @access private |
| 33 | */ |
| 34 | private $translate; |
| 35 | |
| 36 | /** |
| 37 | * Output object. |
| 38 | * |
| 39 | * @var \WordPressPopularPosts\Output $output |
| 40 | * @access private |
| 41 | */ |
| 42 | private $output; |
| 43 | |
| 44 | /** |
| 45 | * Construct. |
| 46 | * |
| 47 | * @since 5.0.0 |
| 48 | * @param array $config Admin settings. |
| 49 | * @param \WordPressPopularPosts\Translate $translate Translate class. |
| 50 | */ |
| 51 | public function __construct(array $config, \WordPressPopularPosts\Translate $translate, \WordPressPopularPosts\Output $output) |
| 52 | { |
| 53 | $this->config = $config; |
| 54 | $this->translate = $translate; |
| 55 | $this->output = $output; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * WordPress public-facing hooks. |
| 60 | * |
| 61 | * @since 5.0.0 |
| 62 | */ |
| 63 | public function hooks() |
| 64 | { |
| 65 | add_shortcode('wpp', [$this, 'wpp_shortcode']); |
| 66 | add_action('wp_ajax_update_views_ajax', [$this, 'update_views']); |
| 67 | add_action('wp_ajax_nopriv_update_views_ajax', [$this, 'update_views']); |
| 68 | add_action('wp_enqueue_scripts', [$this, 'enqueue_assets']); |
| 69 | |
| 70 | add_action('wp_footer', [$this, 'theme_widgets']); |
| 71 | |
| 72 | if ( $this->config['tools']['thumbnail']['lazyload'] ) { |
| 73 | add_action('wp_footer', [$this, 'lazyload_images']); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Enqueues public facing assets. |
| 79 | * |
| 80 | * @since 5.0.0 |
| 81 | */ |
| 82 | public function enqueue_assets() |
| 83 | { |
| 84 | // Enqueue WPP's stylesheet. |
| 85 | if ( $this->config['tools']['css'] ) { |
| 86 | $theme_file = get_stylesheet_directory() . '/wpp.css'; |
| 87 | |
| 88 | if ( @is_file($theme_file) ) { |
| 89 | wp_enqueue_style('wordpress-popular-posts-css', get_stylesheet_directory_uri() . "/wpp.css", [], WPP_VERSION, 'all'); |
| 90 | } // Load stock stylesheet |
| 91 | else { |
| 92 | wp_enqueue_style('wordpress-popular-posts-css', plugin_dir_url(dirname(dirname(__FILE__))) . 'assets/css/wpp.css', [], WPP_VERSION, 'all'); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | // Enqueue WPP's library. |
| 97 | $is_single = 0; |
| 98 | |
| 99 | if ( |
| 100 | ( 0 == $this->config['tools']['log']['level'] && !is_user_logged_in() ) |
| 101 | || ( 1 == $this->config['tools']['log']['level'] ) |
| 102 | || ( 2 == $this->config['tools']['log']['level'] && is_user_logged_in() ) |
| 103 | ) { |
| 104 | $is_single = Helper::is_single(); |
| 105 | } |
| 106 | |
| 107 | wp_register_script('wpp-js', plugin_dir_url(dirname(dirname(__FILE__))) . 'assets/js/wpp-5.0.0.min.js', [], WPP_VERSION, false); |
| 108 | $params = [ |
| 109 | 'sampling_active' => (int) $this->config['tools']['sampling']['active'], |
| 110 | 'sampling_rate' => $this->config['tools']['sampling']['rate'], |
| 111 | 'ajax_url' => esc_url_raw(rest_url('wordpress-popular-posts/v1/popular-posts')), |
| 112 | 'ID' => $is_single, |
| 113 | 'token' => wp_create_nonce('wp_rest'), |
| 114 | 'debug' => WP_DEBUG |
| 115 | ]; |
| 116 | wp_localize_script('wpp-js', 'wpp_params', $params); |
| 117 | wp_enqueue_script('wpp-js'); |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Updates views count on page load via AJAX. |
| 122 | * |
| 123 | * @since 2.0.0 |
| 124 | */ |
| 125 | public function update_views() |
| 126 | { |
| 127 | if ( ! wp_verify_nonce($_POST['token'], 'wpp-token') || ! Helper::is_number($_POST['wpp_id']) ) { |
| 128 | die( "WPP: Oops, invalid request!" ); |
| 129 | } |
| 130 | |
| 131 | $nonce = $_POST['token']; |
| 132 | $post_ID = $_POST['wpp_id']; |
| 133 | $exec_time = 0; |
| 134 | |
| 135 | $start = Helper::microtime_float(); |
| 136 | $result = $this->update_views_count($post_ID); |
| 137 | $end = Helper::microtime_float(); |
| 138 | $exec_time += round($end - $start, 6); |
| 139 | |
| 140 | if ( $result ) { |
| 141 | die("WPP: OK. Execution time: " . $exec_time . " seconds"); |
| 142 | } |
| 143 | |
| 144 | die("WPP: Oops, could not update the views count!"); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Updates views count. |
| 149 | * |
| 150 | * @since 1.4.0 |
| 151 | * @access private |
| 152 | * @global object $wpdb |
| 153 | * @param int $post_ID |
| 154 | * @return bool|int FALSE if query failed, TRUE on success |
| 155 | */ |
| 156 | private function update_views_count($post_ID) { |
| 157 | /* |
| 158 | TODO: |
| 159 | For WordPress Multisite, we must define the DIEONDBERROR constant for database errors to display like so: |
| 160 | <?php define( 'DIEONDBERROR', true ); ?> |
| 161 | */ |
| 162 | global $wpdb; |
| 163 | $table = $wpdb->prefix . "popularposts"; |
| 164 | $wpdb->show_errors(); |
| 165 | |
| 166 | // Get translated object ID |
| 167 | $post_ID = $this->translate->get_object_id( |
| 168 | $post_ID, |
| 169 | get_post_type($post_ID), |
| 170 | true, |
| 171 | $this->translate->get_default_language() |
| 172 | ); |
| 173 | $now = Helper::now(); |
| 174 | $curdate = Helper::curdate(); |
| 175 | $views = ( $this->config['tools']['sampling']['active'] ) |
| 176 | ? $this->config['tools']['sampling']['rate'] |
| 177 | : 1; |
| 178 | |
| 179 | // Allow WP themers / coders perform an action |
| 180 | // before updating views count |
| 181 | if ( has_action('wpp_pre_update_views') ) |
| 182 | do_action('wpp_pre_update_views', $post_ID, $views); |
| 183 | |
| 184 | // Update all-time table |
| 185 | $result1 = $wpdb->query($wpdb->prepare( |
| 186 | "INSERT INTO {$table}data |
| 187 | (postid, day, last_viewed, pageviews) VALUES (%d, %s, %s, %d) |
| 188 | ON DUPLICATE KEY UPDATE pageviews = pageviews + %d, last_viewed = %s;", |
| 189 | $post_ID, |
| 190 | $now, |
| 191 | $now, |
| 192 | $views, |
| 193 | $views, |
| 194 | $now |
| 195 | )); |
| 196 | |
| 197 | // Update range (summary) table |
| 198 | $result2 = $wpdb->query($wpdb->prepare( |
| 199 | "INSERT INTO {$table}summary |
| 200 | (postid, pageviews, view_date, view_datetime) VALUES (%d, %d, %s, %s) |
| 201 | ON DUPLICATE KEY UPDATE pageviews = pageviews + %d, view_datetime = %s;", |
| 202 | $post_ID, |
| 203 | $views, |
| 204 | $curdate, |
| 205 | $now, |
| 206 | $views, |
| 207 | $now |
| 208 | )); |
| 209 | |
| 210 | if ( !$result1 || !$result2 ) |
| 211 | return false; |
| 212 | |
| 213 | // Allow WP themers / coders perform an action |
| 214 | // after updating views count |
| 215 | if ( has_action('wpp_post_update_views' )) |
| 216 | do_action('wpp_post_update_views', $post_ID); |
| 217 | |
| 218 | return true; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * WPP shortcode handler. |
| 223 | * |
| 224 | * @since 1.4.0 |
| 225 | * @param array $atts User defined attributes in shortcode tag |
| 226 | * @return string |
| 227 | */ |
| 228 | public function wpp_shortcode($atts = null) { |
| 229 | /** |
| 230 | * @var string $header |
| 231 | * @var int $limit |
| 232 | * @var int $offset |
| 233 | * @var string $range |
| 234 | * @var bool $freshness |
| 235 | * @var string $order_by |
| 236 | * @var string $post_type |
| 237 | * @var string $pid |
| 238 | * @var string $cat |
| 239 | * @var string $author |
| 240 | * @var int $title_length |
| 241 | * @var int $title_by_words |
| 242 | * @var int $excerpt_length |
| 243 | * @var int $excerpt_format |
| 244 | * @var int $excerpt_by_words |
| 245 | * @var int $thumbnail_width |
| 246 | * @var int $thumbnail_height |
| 247 | * @var bool $rating |
| 248 | * @var bool $stats_comments |
| 249 | * @var bool $stats_views |
| 250 | * @var bool $stats_author |
| 251 | * @var bool $stats_date |
| 252 | * @var string $stats_date_format |
| 253 | * @var bool $stats_category |
| 254 | * @var string $wpp_start |
| 255 | * @var string $wpp_end |
| 256 | * @var string $header_start |
| 257 | * @var string $header_end |
| 258 | * @var string $post_html |
| 259 | * @var bool $php |
| 260 | */ |
| 261 | extract(shortcode_atts([ |
| 262 | 'header' => '', |
| 263 | 'limit' => 10, |
| 264 | 'offset' => 0, |
| 265 | 'range' => 'daily', |
| 266 | 'time_unit' => 'hour', |
| 267 | 'time_quantity' => 24, |
| 268 | 'freshness' => false, |
| 269 | 'order_by' => 'views', |
| 270 | 'post_type' => 'post', |
| 271 | 'pid' => '', |
| 272 | 'cat' => '', |
| 273 | 'taxonomy' => 'category', |
| 274 | 'term_id' => '', |
| 275 | 'author' => '', |
| 276 | 'title_length' => 0, |
| 277 | 'title_by_words' => 0, |
| 278 | 'excerpt_length' => 0, |
| 279 | 'excerpt_format' => 0, |
| 280 | 'excerpt_by_words' => 0, |
| 281 | 'thumbnail_width' => 0, |
| 282 | 'thumbnail_height' => 0, |
| 283 | 'rating' => false, |
| 284 | 'stats_comments' => false, |
| 285 | 'stats_views' => true, |
| 286 | 'stats_author' => false, |
| 287 | 'stats_date' => false, |
| 288 | 'stats_date_format' => 'F j, Y', |
| 289 | 'stats_category' => false, |
| 290 | 'stats_taxonomy' => false, |
| 291 | 'wpp_start' => '<ul class="wpp-list">', |
| 292 | 'wpp_end' => '</ul>', |
| 293 | 'header_start' => '<h2>', |
| 294 | 'header_end' => '</h2>', |
| 295 | 'post_html' => '', |
| 296 | 'php' => false |
| 297 | ], $atts, 'wpp')); |
| 298 | |
| 299 | // possible values for "Time Range" and "Order by" |
| 300 | $time_units = ["minute", "hour", "day", "week", "month"]; |
| 301 | $range_values = ["daily", "last24hours", "weekly", "last7days", "monthly", "last30days", "all", "custom"]; |
| 302 | $order_by_values = ["comments", "views", "avg"]; |
| 303 | |
| 304 | $shortcode_ops = [ |
| 305 | 'title' => strip_tags($header), |
| 306 | 'limit' => ( ! empty($limit ) && Helper::is_number($limit) && $limit > 0 ) ? $limit : 10, |
| 307 | 'offset' => ( ! empty($offset) && Helper::is_number($offset) && $offset >= 0 ) ? $offset : 0, |
| 308 | 'range' => ( in_array($range, $range_values) ) ? $range : 'daily', |
| 309 | 'time_quantity' => ( ! empty($time_quantity ) && Helper::is_number($time_quantity) && $time_quantity > 0 ) ? $time_quantity : 24, |
| 310 | 'time_unit' => ( in_array($time_unit, $time_units) ) ? $time_unit : 'hour', |
| 311 | 'freshness' => empty($freshness) ? false : $freshness, |
| 312 | 'order_by' => ( in_array($order_by, $order_by_values) ) ? $order_by : 'views', |
| 313 | 'post_type' => empty($post_type) ? 'post,page' : $post_type, |
| 314 | 'pid' => rtrim(preg_replace('|[^0-9,]|', '', $pid), ","), |
| 315 | 'cat' => rtrim(preg_replace('|[^0-9,-]|', '', $cat), ","), |
| 316 | 'taxonomy' => empty($taxonomy) ? 'category' : $taxonomy, |
| 317 | 'term_id' => rtrim(preg_replace('|[^0-9,;-]|', '', $term_id), ","), |
| 318 | 'author' => rtrim(preg_replace('|[^0-9,]|', '', $author), ","), |
| 319 | 'shorten_title' => [ |
| 320 | 'active' => ( ! empty($title_length) && Helper::is_number($title_length) && $title_length > 0 ), |
| 321 | 'length' => ( ! empty($title_length) && Helper::is_number($title_length) ) ? $title_length : 0, |
| 322 | 'words' => ( ! empty($title_by_words) && Helper::is_number($title_by_words) && $title_by_words > 0 ), |
| 323 | ], |
| 324 | 'post-excerpt' => [ |
| 325 | 'active' => ( ! empty($excerpt_length) && Helper::is_number($excerpt_length) && $excerpt_length > 0 ), |
| 326 | 'length' => ( ! empty($excerpt_length) && Helper::is_number($excerpt_length) ) ? $excerpt_length : 0, |
| 327 | 'keep_format' => ( ! empty($excerpt_format) && Helper::is_number($excerpt_format) && $excerpt_format > 0 ), |
| 328 | 'words' => ( ! empty($excerpt_by_words) && Helper::is_number($excerpt_by_words) && $excerpt_by_words > 0 ), |
| 329 | ], |
| 330 | 'thumbnail' => [ |
| 331 | 'active' => ( ! empty($thumbnail_width) && Helper::is_number($thumbnail_width) && $thumbnail_width > 0 ), |
| 332 | 'width' => ( ! empty($thumbnail_width) && Helper::is_number($thumbnail_width) && $thumbnail_width > 0 ) ? $thumbnail_width : 0, |
| 333 | 'height' => ( ! empty($thumbnail_height) && Helper::is_number($thumbnail_height) && $thumbnail_height > 0 ) ? $thumbnail_height : 0, |
| 334 | ], |
| 335 | 'rating' => empty($rating) ? false : $rating, |
| 336 | 'stats_tag' => [ |
| 337 | 'comment_count' => empty($stats_comments) ? false : $stats_comments, |
| 338 | 'views' => empty($stats_views) ? false : $stats_views, |
| 339 | 'author' => empty($stats_author) ? false : $stats_author, |
| 340 | 'date' => [ |
| 341 | 'active' => empty($stats_date) ? false : $stats_date, |
| 342 | 'format' => empty($stats_date_format) ? 'F j, Y' : $stats_date_format |
| 343 | ], |
| 344 | 'category' => empty($stats_category) ? false : $stats_category, |
| 345 | 'taxonomy' => [ |
| 346 | 'active' => empty($stats_taxonomy) ? false : $stats_taxonomy, |
| 347 | 'name' => empty($taxonomy) ? 'category' : $taxonomy, |
| 348 | ] |
| 349 | ], |
| 350 | 'markup' => [ |
| 351 | 'custom_html' => true, |
| 352 | 'wpp-start' => empty($wpp_start) ? '' : $wpp_start, |
| 353 | 'wpp-end' => empty($wpp_end) ? '' : $wpp_end, |
| 354 | 'title-start' => empty($header_start) ? '' : $header_start, |
| 355 | 'title-end' => empty($header_end) ? '' : $header_end, |
| 356 | 'post-html' => empty($post_html) ? '<li>{thumb} {title} <span class="wpp-meta post-stats">{stats}</span></li>' : $post_html |
| 357 | ] |
| 358 | ]; |
| 359 | |
| 360 | // Post / Page / CTP filter |
| 361 | $ids = array_filter(explode(",", $shortcode_ops['pid']), 'is_numeric'); |
| 362 | // Got no valid IDs, clear |
| 363 | if ( empty($ids) ) { |
| 364 | $shortcode_ops['pid'] = ''; |
| 365 | } |
| 366 | |
| 367 | // Category filter |
| 368 | $ids = array_filter(explode(",", $shortcode_ops['cat']), 'is_numeric'); |
| 369 | // Got no valid IDs, clear |
| 370 | if ( empty($ids) ) { |
| 371 | $shortcode_ops['cat'] = ''; |
| 372 | } |
| 373 | |
| 374 | // Author filter |
| 375 | $ids = array_filter(explode( ",", $shortcode_ops['author']), 'is_numeric'); |
| 376 | // Got no valid IDs, clear |
| 377 | if ( empty($ids) ) { |
| 378 | $shortcode_ops['author'] = ''; |
| 379 | } |
| 380 | |
| 381 | $shortcode_content = ''; |
| 382 | |
| 383 | // is there a title defined by user? |
| 384 | if ( |
| 385 | ! empty($header) |
| 386 | && ! empty($header_start) |
| 387 | && ! empty($header_end) |
| 388 | ) { |
| 389 | $shortcode_content .= htmlspecialchars_decode($header_start, ENT_QUOTES) . $header . htmlspecialchars_decode($header_end, ENT_QUOTES); |
| 390 | } |
| 391 | |
| 392 | $cached = false; |
| 393 | |
| 394 | // Return cached results |
| 395 | if ( $this->config['tools']['cache']['active'] ) { |
| 396 | |
| 397 | $key = md5(json_encode($shortcode_ops)); |
| 398 | $popular_posts = \WordPressPopularPosts\Cache::get($key); |
| 399 | |
| 400 | if ( false === $popular_posts ) { |
| 401 | $popular_posts = new Query($shortcode_ops); |
| 402 | |
| 403 | $time_value = $this->config['tools']['cache']['interval']['value']; // eg. 5 |
| 404 | $time_unit = $this->config['tools']['cache']['interval']['time']; // eg. 'minute' |
| 405 | |
| 406 | // No popular posts found, check again in 1 minute |
| 407 | if ( ! $popular_posts->get_posts() ) { |
| 408 | $time_value = 1; |
| 409 | $time_unit = 'minute'; |
| 410 | } |
| 411 | |
| 412 | \WordPressPopularPosts\Cache::set( |
| 413 | $key, |
| 414 | $popular_posts, |
| 415 | $time_value, |
| 416 | $time_unit |
| 417 | ); |
| 418 | } |
| 419 | |
| 420 | $cached = true; |
| 421 | |
| 422 | } // Get popular posts |
| 423 | else { |
| 424 | $popular_posts = new Query($shortcode_ops); |
| 425 | } |
| 426 | |
| 427 | $this->output->set_data($popular_posts->get_posts()); |
| 428 | $this->output->set_public_options($shortcode_ops); |
| 429 | $this->output->build_output(); |
| 430 | |
| 431 | $shortcode_content .= $this->output->get_output(); |
| 432 | |
| 433 | return $shortcode_content; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Themes widgets. |
| 438 | * |
| 439 | * @since 5.0.0 |
| 440 | */ |
| 441 | public function theme_widgets() |
| 442 | { |
| 443 | ?> |
| 444 | <script type="text/javascript"> |
| 445 | (function(){ |
| 446 | document.addEventListener('DOMContentLoaded', function(){ |
| 447 | let wpp_widgets = document.querySelectorAll('.popular-posts-sr'); |
| 448 | |
| 449 | if ( wpp_widgets ) { |
| 450 | for (let i = 0; i < wpp_widgets.length; i++) { |
| 451 | let wpp_widget = wpp_widgets[i]; |
| 452 | WordPressPopularPosts.theme(wpp_widget); |
| 453 | } |
| 454 | } |
| 455 | }); |
| 456 | })(); |
| 457 | </script> |
| 458 | <?php |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Lazy loads WPP's images. |
| 463 | * |
| 464 | * @since 5.0.0 |
| 465 | */ |
| 466 | public function lazyload_images() |
| 467 | { |
| 468 | ?> |
| 469 | <script> |
| 470 | var WPPImageObserver = null; |
| 471 | |
| 472 | function wpp_load_img(img) { |
| 473 | if ( ! 'imgSrc' in img.dataset || ! img.dataset.imgSrc ) |
| 474 | return; |
| 475 | |
| 476 | img.src = img.dataset.imgSrc; |
| 477 | |
| 478 | if ( 'imgSrcset' in img.dataset ) { |
| 479 | img.srcset = img.dataset.imgSrcset; |
| 480 | img.removeAttribute('data-img-srcset'); |
| 481 | } |
| 482 | |
| 483 | img.classList.remove('wpp-lazyload'); |
| 484 | img.removeAttribute('data-img-src'); |
| 485 | img.classList.add('wpp-lazyloaded'); |
| 486 | } |
| 487 | |
| 488 | function wpp_observe_imgs(){ |
| 489 | let wpp_images = document.querySelectorAll('img.wpp-lazyload'), |
| 490 | wpp_widgets = document.querySelectorAll('.popular-posts-sr'); |
| 491 | |
| 492 | if ( wpp_images.length || wpp_widgets.length ) { |
| 493 | if ( 'IntersectionObserver' in window ) { |
| 494 | WPPImageObserver = new IntersectionObserver(function(entries, observer) { |
| 495 | entries.forEach(function(entry) { |
| 496 | if (entry.isIntersecting) { |
| 497 | let img = entry.target; |
| 498 | wpp_load_img(img); |
| 499 | WPPImageObserver.unobserve(img); |
| 500 | } |
| 501 | }); |
| 502 | }); |
| 503 | |
| 504 | if ( wpp_images.length ) { |
| 505 | wpp_images.forEach(function(image) { |
| 506 | WPPImageObserver.observe(image); |
| 507 | }); |
| 508 | } |
| 509 | |
| 510 | if ( wpp_widgets.length ) { |
| 511 | for (var i = 0; i < wpp_widgets.length; i++) { |
| 512 | let wpp_widget_images = wpp_widgets[i].querySelectorAll('img.wpp-lazyload'); |
| 513 | |
| 514 | if ( ! wpp_widget_images.length && wpp_widgets[i].shadowRoot ) { |
| 515 | wpp_widget_images = wpp_widgets[i].shadowRoot.querySelectorAll('img.wpp-lazyload'); |
| 516 | } |
| 517 | |
| 518 | if ( wpp_widget_images.length ) { |
| 519 | wpp_widget_images.forEach(function(image) { |
| 520 | WPPImageObserver.observe(image); |
| 521 | }); |
| 522 | } |
| 523 | } |
| 524 | } |
| 525 | } /** Fallback for older browsers */ |
| 526 | else { |
| 527 | if ( wpp_images.length ) { |
| 528 | for (var i = 0; i < wpp_images.length; i++) { |
| 529 | wpp_load_img(wpp_images[i]); |
| 530 | wpp_images[i].classList.remove('wpp-lazyloaded'); |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | if ( wpp_widgets.length ) { |
| 535 | for (var j = 0; j < wpp_widgets.length; j++) { |
| 536 | let wpp_widget = wpp_widgets[j], |
| 537 | wpp_widget_images = wpp_widget.querySelectorAll('img.wpp-lazyload'); |
| 538 | |
| 539 | if ( ! wpp_widget_images.length && wpp_widget.shadowRoot ) { |
| 540 | wpp_widget_images = wpp_widget.shadowRoot.querySelectorAll('img.wpp-lazyload'); |
| 541 | } |
| 542 | |
| 543 | if ( wpp_widget_images.length ) { |
| 544 | for (var k = 0; k < wpp_widget_images.length; k++) { |
| 545 | wpp_load_img(wpp_widget_images[k]); |
| 546 | wpp_widget_images[k].classList.remove('wpp-lazyloaded'); |
| 547 | } |
| 548 | } |
| 549 | } |
| 550 | } |
| 551 | } |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | document.addEventListener('DOMContentLoaded', function() { |
| 556 | wpp_observe_imgs(); |
| 557 | |
| 558 | // When an ajaxified WPP widget loads, |
| 559 | // Lazy load its images |
| 560 | document.addEventListener('wpp-onload', function(){ |
| 561 | wpp_observe_imgs(); |
| 562 | }); |
| 563 | }); |
| 564 | </script> |
| 565 | <?php |
| 566 | } |
| 567 | } |
| 568 |