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Filename :
class-updraft-dashboard-news.php
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<?php if (!defined('ABSPATH')) die('No direct access allowed'); if (!class_exists('Updraft_Dashboard_News')) : /** * Handles all stuffs related to Dashboard News */ class Updraft_Dashboard_News { /** * dashboard news feed URL * * @var String */ protected $feed_url; /** * news page URL * * @var String */ protected $link; /** * various translations to use in the UI * * @var Array */ protected $translations; /** * slug to use, where needed * * @var String */ protected $slug; /** * Valid ajax callback pages * * @var Array */ protected $valid_callback_pages; /** * constructor of class Updraft_Dashboard_News * * @param String $feed_url - dashboard news feed URL * @param String $link - web page URL * @param Array $translations - an array of translations, with keys: product_title, item_prefix, item_description, dismiss_confirm */ public function __construct($feed_url, $link, $translations) { $this->feed_url = $feed_url; $this->link = $link; $this->translations = $translations; $this->slug = sanitize_title($translations['product_title']); $dashboard_news_transient_name = $this->get_transient_name(); add_filter('pre_set_transient_'.$dashboard_news_transient_name, array($this, 'pre_set_transient_for_dashboard_news'), 10); add_filter('transient_'.$dashboard_news_transient_name, array($this, 'transient_for_dashboard_news'), 10); add_action('wp_ajax_'.$this->slug.'_ajax_dismiss_dashboard_news', array($this, 'dismiss_dashboard_news')); if ('index.php' == $GLOBALS['pagenow'] && !get_user_meta(get_current_user_id(), $this->slug.'_dismiss_dashboard_news', true)) { add_action('admin_print_footer_scripts', array($this, 'admin_print_footer_scripts')); } add_action('wp_ajax_dashboard-widgets', array($this, 'wp_ajax_dashboard_widgets_low_priority'), 1); add_action('wp_ajax_dashboard-widgets', array($this, 'wp_ajax_dashboard_widgets_high_priority'), 20); $this->valid_callback_pages = array( 'dashboard-user', 'dashboard-network', 'dashboard', ); } /** * Get the transient name * * @return String */ private function get_transient_name() { $locale = function_exists('get_user_locale') ? get_user_locale() : get_locale(); global $wp_version; @include(ABSPATH.WPINC.'/version.php');// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Silenced to suppress errors that may arise because of the function. $dash_prefix = version_compare($wp_version, '4.8', '>=') ? 'dash_v2_' : 'dash_'; return version_compare($wp_version, '4.3', '>=') ? $dash_prefix.md5('dashboard_primary_'.$locale) : 'dash_'.md5('dashboard_primary'); } /** * Filters a transient for dashboard news before its value is set * * @param String $value - New value of transient * @return String HTML of Wordpress News & Events same as $transient param */ public function pre_set_transient_for_dashboard_news($value) { if (!function_exists('wp_dashboard_primary_output')) return $value; // Not needed first if condition, because filter hook name have already transient name. It is for better checking if (!get_user_meta(get_current_user_id(), $this->slug.'_dismiss_dashboard_news', true)) { // Gets the news, when fetching WP news first time (transient cache does not exist) $this->get_dashboard_news_html(); } return $value; } /** * wp_ajax_dashboard-widgets ajax action handler with low priority */ public function wp_ajax_dashboard_widgets_low_priority() { if (!$this->do_ajax_dashboard_news()) return; add_filter('wp_die_ajax_handler', array($this, 'wp_die_ajax_handler')); } /** * Dummy wp die handler * * @param String $callback_function Callable $function Callback function name * @return String callable $function Callback function name */ public function wp_die_ajax_handler($callback_function) { // this condition is not required, but always better to double confirm if (!$this->do_ajax_dashboard_news()) return $callback_function; // Here, We can use __return_empty_string function name, but __return_empty_string is available since WP 3.7. Whereas __return_true function name available since WP 3.0 return '__return_true'; } /** * wp_ajax_dashboard-widgets ajax action handler with high priority */ public function wp_ajax_dashboard_widgets_high_priority() { if (!$this->do_ajax_dashboard_news()) return; remove_filter('wp_die_ajax_handler', array($this, 'wp_die_ajax_handler')); echo wp_kses_post($this->get_dashboard_news_html()); wp_die(); } /** * Check whether valid ajax for dashboard news or not * * @return Boolean True if an ajax for the WP dashboard news */ protected function do_ajax_dashboard_news() { $ajax_callback_page = !empty($_GET['pagenow']) ? $_GET['pagenow'] : ''; return (in_array($ajax_callback_page, $this->valid_callback_pages) && !empty($_GET['widget']) && 'dashboard_primary' == $_GET['widget']); } /** * Filters a transient for dashboard news when getting transient value * * @param String $value - New value of transient * @return String - HTML of Wordpress News & Events */ public function transient_for_dashboard_news($value) { if (!function_exists('wp_dashboard_primary_output')) return $value; // Not needed first if condition, because filter hook name have already transient name. It is for better checking if (!get_user_meta(get_current_user_id(), $this->slug.'_dismiss_dashboard_news', true) && !empty($value)) { return $value.$this->get_dashboard_news_html(); } return $value; } /** * get dashboard news html * * @return String - the resulting message */ protected function get_dashboard_news_html() { $cache_key = $this->slug.'_dashboard_news'; if (false !== ($output = get_transient($cache_key))) return $output; $feeds = array( $this->slug => array( 'link' => $this->link, 'url' => $this->feed_url, 'title' => $this->translations['product_title'], 'items' => apply_filters($this->slug.'_dashboard_news_items_count', 2), 'show_summary' => 0, 'show_author' => 0, 'show_date' => 0, ) ); ob_start(); wp_dashboard_primary_output('dashboard_primary', $feeds); $original_formatted_news = ob_get_clean(); $formatted_news = preg_replace('/<a(.+?)>(.+?)<\/a>/i', "<a$1>".esc_html($this->translations['item_prefix']).": $2</a>", $original_formatted_news); $formatted_news = str_replace('<li>', '<li class="'.esc_attr($this->slug).'_dashboard_news_item">'.'<a href="'.esc_url(UpdraftPlus::get_current_clean_url()).'" class="dashicons dashicons-no-alt" title="'.esc_attr($this->translations['dismiss_tooltip']).'" onClick="'.esc_js($this->slug).'_dismiss_dashboard_news(); return false;" style="float: right; box-shadow: none; margin-left: 5px;"></a>', $formatted_news); set_transient($this->slug.'_dashboard_news', $formatted_news, 43200); // 12 hours return $formatted_news; } /** * Prints javascripts in admin footer */ public function admin_print_footer_scripts() { ?> <script> function <?php echo esc_js($this->slug); ?>_dismiss_dashboard_news() { if (confirm("<?php echo esc_js($this->translations['dismiss_confirm']); ?>")) { jQuery.ajax({ url: '<?php echo esc_url(admin_url('admin-ajax.php'));?>', data : { action: '<?php echo esc_js($this->slug); ?>_ajax_dismiss_dashboard_news', nonce : '<?php echo esc_js(wp_create_nonce($this->slug.'-dismiss-news-nonce'));?>' }, success: function(response) { jQuery('.<?php echo esc_js($this->slug); ?>_dashboard_news_item').slideUp('slow'); }, error: function(response, status, error_code) { console.log("<?php echo esc_js($this->slug); ?>_dismiss_dashboard_news: error: "+status+" ("+error_code+")"); console.log(response); } }); } } </script> <?php } /** * Dismiss dashboard news */ public function dismiss_dashboard_news() { $nonce = empty($_REQUEST['nonce']) ? '' : $_REQUEST['nonce']; if (!wp_verify_nonce($nonce, $this->slug.'-dismiss-news-nonce')) die('Security check.'); update_user_meta(get_current_user_id(), $this->slug.'_dismiss_dashboard_news', true); die(); } } endif;