diff options
Diffstat (limited to 'plugins/jetpack/modules/infinite-scroll/infinity.php')
| -rw-r--r-- | plugins/jetpack/modules/infinite-scroll/infinity.php | 1664 |
1 files changed, 0 insertions, 1664 deletions
diff --git a/plugins/jetpack/modules/infinite-scroll/infinity.php b/plugins/jetpack/modules/infinite-scroll/infinity.php deleted file mode 100644 index 35193cfc..00000000 --- a/plugins/jetpack/modules/infinite-scroll/infinity.php +++ /dev/null @@ -1,1664 +0,0 @@ -<?php - -/* -Plugin Name: The Neverending Home Page. -Plugin URI: http://automattic.com/ -Description: Adds infinite scrolling support to the front-end blog post view for themes, pulling the next set of posts automatically into view when the reader approaches the bottom of the page. -Version: 1.1 -Author: Automattic -Author URI: http://automattic.com/ -License: GNU General Public License v2 or later -License URI: http://www.gnu.org/licenses/gpl-2.0.html -*/ - -/** - * Class: The_Neverending_Home_Page relies on add_theme_support, expects specific - * styling from each theme; including fixed footer. - */ -class The_Neverending_Home_Page { - /** - * Register actions and filters, plus parse IS settings - * - * @uses add_action, add_filter, self::get_settings - * @return null - */ - function __construct() { - add_action( 'pre_get_posts', array( $this, 'posts_per_page_query' ) ); - - add_action( 'admin_init', array( $this, 'settings_api_init' ) ); - add_action( 'template_redirect', array( $this, 'action_template_redirect' ) ); - add_action( 'template_redirect', array( $this, 'ajax_response' ) ); - add_action( 'custom_ajax_infinite_scroll', array( $this, 'query' ) ); - add_filter( 'infinite_scroll_query_args', array( $this, 'inject_query_args' ) ); - add_filter( 'infinite_scroll_allowed_vars', array( $this, 'allowed_query_vars' ) ); - add_action( 'the_post', array( $this, 'preserve_more_tag' ) ); - add_action( 'wp_footer', array( $this, 'footer' ) ); - - // Plugin compatibility - add_filter( 'grunion_contact_form_redirect_url', array( $this, 'filter_grunion_redirect_url' ) ); - - // Parse IS settings from theme - self::get_settings(); - } - - /** - * Initialize our static variables - */ - static $the_time = null; - static $settings = null; // Don't access directly, instead use self::get_settings(). - - static $option_name_enabled = 'infinite_scroll'; - - /** - * Parse IS settings provided by theme - * - * @uses get_theme_support, infinite_scroll_has_footer_widgets, sanitize_title, add_action, get_option, wp_parse_args, is_active_sidebar - * @return object - */ - static function get_settings() { - if ( is_null( self::$settings ) ) { - $css_pattern = '#[^A-Z\d\-_]#i'; - - $settings = $defaults = array( - 'type' => 'scroll', // scroll | click - 'requested_type' => 'scroll', // store the original type for use when logic overrides it - 'footer_widgets' => false, // true | false | sidebar_id | array of sidebar_ids -- last two are checked with is_active_sidebar - 'container' => 'content', // container html id - 'wrapper' => true, // true | false | html class - 'render' => false, // optional function, otherwise the `content` template part will be used - 'footer' => true, // boolean to enable or disable the infinite footer | string to provide an html id to derive footer width from - 'footer_callback' => false, // function to be called to render the IS footer, in place of the default - 'posts_per_page' => false, // int | false to set based on IS type - 'click_handle' => true, // boolean to enable or disable rendering the click handler div. If type is click and this is false, page must include its own trigger with the HTML ID `infinite-handle`. - ); - - // Validate settings passed through add_theme_support() - $_settings = get_theme_support( 'infinite-scroll' ); - - if ( is_array( $_settings ) ) { - // Preferred implementation, where theme provides an array of options - if ( isset( $_settings[0] ) && is_array( $_settings[0] ) ) { - foreach ( $_settings[0] as $key => $value ) { - switch ( $key ) { - case 'type' : - if ( in_array( $value, array( 'scroll', 'click' ) ) ) - $settings[ $key ] = $settings['requested_type'] = $value; - - break; - - case 'footer_widgets' : - if ( is_string( $value ) ) - $settings[ $key ] = sanitize_title( $value ); - elseif ( is_array( $value ) ) - $settings[ $key ] = array_map( 'sanitize_title', $value ); - elseif ( is_bool( $value ) ) - $settings[ $key ] = $value; - - break; - - case 'container' : - case 'wrapper' : - if ( 'wrapper' == $key && is_bool( $value ) ) { - $settings[ $key ] = $value; - } else { - $value = preg_replace( $css_pattern, '', $value ); - - if ( ! empty( $value ) ) - $settings[ $key ] = $value; - } - - break; - - case 'render' : - if ( false !== $value && is_callable( $value ) ) { - $settings[ $key ] = $value; - } - - break; - - case 'footer' : - if ( is_bool( $value ) ) { - $settings[ $key ] = $value; - } elseif ( is_string( $value ) ) { - $value = preg_replace( $css_pattern, '', $value ); - - if ( ! empty( $value ) ) - $settings[ $key ] = $value; - } - - break; - - case 'footer_callback' : - if ( is_callable( $value ) ) - $settings[ $key ] = $value; - else - $settings[ $key ] = false; - - break; - - case 'posts_per_page' : - if ( is_numeric( $value ) ) - $settings[ $key ] = (int) $value; - - break; - - case 'click_handle' : - if ( is_bool( $value ) ) { - $settings[ $key ] = $value; - } - - break; - - default: - break; - } - } - } elseif ( is_string( $_settings[0] ) ) { - // Checks below are for backwards compatibility - - // Container to append new posts to - $settings['container'] = preg_replace( $css_pattern, '', $_settings[0] ); - - // Wrap IS elements? - if ( isset( $_settings[1] ) ) - $settings['wrapper'] = (bool) $_settings[1]; - } - } - - // Always ensure all values are present in the final array - $settings = wp_parse_args( $settings, $defaults ); - - // Check if a legacy `infinite_scroll_has_footer_widgets()` function is defined and override the footer_widgets parameter's value. - // Otherwise, if a widget area ID or array of IDs was provided in the footer_widgets parameter, check if any contains any widgets. - // It is safe to use `is_active_sidebar()` before the sidebar is registered as this function doesn't check for a sidebar's existence when determining if it contains any widgets. - if ( function_exists( 'infinite_scroll_has_footer_widgets' ) ) { - $settings['footer_widgets'] = (bool) infinite_scroll_has_footer_widgets(); - } elseif ( is_array( $settings['footer_widgets'] ) ) { - $sidebar_ids = $settings['footer_widgets']; - $settings['footer_widgets'] = false; - - foreach ( $sidebar_ids as $sidebar_id ) { - if ( is_active_sidebar( $sidebar_id ) ) { - $settings['footer_widgets'] = true; - break; - } - } - - unset( $sidebar_ids ); - unset( $sidebar_id ); - } elseif ( is_string( $settings['footer_widgets'] ) ) { - $settings['footer_widgets'] = (bool) is_active_sidebar( $settings['footer_widgets'] ); - } - - /** - * Filter Infinite Scroll's `footer_widgets` parameter. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param bool $settings['footer_widgets'] Does the current theme have Footer Widgets. - */ - $settings['footer_widgets'] = apply_filters( 'infinite_scroll_has_footer_widgets', $settings['footer_widgets'] ); - - // Finally, after all of the sidebar checks and filtering, ensure that a boolean value is present, otherwise set to default of `false`. - if ( ! is_bool( $settings['footer_widgets'] ) ) - $settings['footer_widgets'] = false; - - // Ensure that IS is enabled and no footer widgets exist if the IS type isn't already "click". - if ( 'click' != $settings['type'] ) { - // Check the setting status - $disabled = '' === get_option( self::$option_name_enabled ) ? true : false; - - // Footer content or Reading option check - if ( $settings['footer_widgets'] || $disabled ) - $settings['type'] = 'click'; - } - - // Force display of the click handler and attendant bits when the type isn't `click` - if ( 'click' !== $settings['type'] ) { - $settings['click_handle'] = true; - } - - // Store final settings in a class static to avoid reparsing - /** - * Filter the array of Infinite Scroll settings. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param array $settings Array of Infinite Scroll settings. - */ - self::$settings = apply_filters( 'infinite_scroll_settings', $settings ); - } - - /** This filter is already documented in modules/infinite-scroll/infinity.php */ - return (object) apply_filters( 'infinite_scroll_settings', self::$settings ); - } - - /** - * Number of posts per page. - * - * @uses self::wp_query, self::get_settings, apply_filters - * @return int - */ - static function posts_per_page() { - $posts_per_page = self::get_settings()->posts_per_page ? self::get_settings()->posts_per_page : self::wp_query()->get( 'posts_per_page' ); - - // Take JS query into consideration here - if ( true === isset( $_REQUEST['query_args']['posts_per_page'] ) ) { - $posts_per_page = $_REQUEST['query_args']['posts_per_page']; - } - - /** - * Filter the number of posts per page. - * - * @module infinite-scroll - * - * @since 6.0.0 - * - * @param int $posts_per_page The number of posts to display per page. - */ - return (int) apply_filters( 'infinite_scroll_posts_per_page', $posts_per_page ); - } - - /** - * Retrieve the query used with Infinite Scroll - * - * @global $wp_the_query - * @uses apply_filters - * @return object - */ - static function wp_query() { - global $wp_the_query; - /** - * Filter the Infinite Scroll query object. - * - * @module infinite-scroll - * - * @since 2.2.1 - * - * @param WP_Query $wp_the_query WP Query. - */ - return apply_filters( 'infinite_scroll_query_object', $wp_the_query ); - } - - /** - * Has infinite scroll been triggered? - */ - static function got_infinity() { - /** - * Filter the parameter used to check if Infinite Scroll has been triggered. - * - * @module infinite-scroll - * - * @since 3.9.0 - * - * @param bool isset( $_GET[ 'infinity' ] ) Return true if the "infinity" parameter is set. - */ - return apply_filters( 'infinite_scroll_got_infinity', isset( $_GET[ 'infinity' ] ) ); - } - - /** - * Is this guaranteed to be the last batch of posts? - */ - static function is_last_batch() { - /** - * Override whether or not this is the last batch for a request - * - * @module infinite-scroll - * - * @since 4.8.0 - * - * @param bool|null null Bool if value should be overridden, null to determine from query - * @param object self::wp_query() WP_Query object for current request - * @param object self::get_settings() Infinite Scroll settings - */ - $override = apply_filters( 'infinite_scroll_is_last_batch', null, self::wp_query(), self::get_settings() ); - if ( is_bool( $override ) ) { - return $override; - } - - $entries = (int) self::wp_query()->found_posts; - $posts_per_page = self::posts_per_page(); - - // This is to cope with an issue in certain themes or setups where posts are returned but found_posts is 0. - if ( 0 == $entries ) { - return (bool) ( count( self::wp_query()->posts ) < $posts_per_page ); - } - $paged = max( 1, self::wp_query()->get( 'paged' ) ); - - // Are there enough posts for more than the first page? - if ( $entries <= $posts_per_page ) { - return true; - } - - // Calculate entries left after a certain number of pages - if ( $paged && $paged > 1 ) { - $entries -= $posts_per_page * $paged; - } - - // Are there some entries left to display? - return $entries <= 0; - } - - /** - * The more tag will be ignored by default if the blog page isn't our homepage. - * Let's force the $more global to false. - */ - function preserve_more_tag( $array ) { - global $more; - - if ( self::got_infinity() ) - $more = 0; //0 = show content up to the more tag. Add more link. - - return $array; - } - - /** - * Add a checkbox field to Settings > Reading - * for enabling infinite scroll. - * - * Only show if the current theme supports infinity. - * - * @uses current_theme_supports, add_settings_field, __, register_setting - * @action admin_init - * @return null - */ - function settings_api_init() { - if ( ! current_theme_supports( 'infinite-scroll' ) ) - return; - - if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { - // This setting is no longer configurable in wp-admin on WordPress.com -- leave a pointer - add_settings_field( self::$option_name_enabled, - '<span id="infinite-scroll-options">' . esc_html__( 'Infinite Scroll Behavior', 'jetpack' ) . '</span>', - array( $this, 'infinite_setting_html_calypso_placeholder' ), - 'reading' - ); - return; - } - - // Add the setting field [infinite_scroll] and place it in Settings > Reading - add_settings_field( self::$option_name_enabled, '<span id="infinite-scroll-options">' . esc_html__( 'Infinite Scroll Behavior', 'jetpack' ) . '</span>', array( $this, 'infinite_setting_html' ), 'reading' ); - register_setting( 'reading', self::$option_name_enabled, 'esc_attr' ); - } - - function infinite_setting_html_calypso_placeholder() { - $details = get_blog_details(); - echo '<span>' . sprintf( - /* translators: Variables are the enclosing link to the settings page */ - esc_html__( 'This option has moved. You can now manage it %1$shere%2$s.' ), - '<a href="' . esc_url( 'https://wordpress.com/settings/writing/' . $details->domain ) . '">', - '</a>' - ) . '</span>'; - } - - /** - * HTML code to display a checkbox true/false option - * for the infinite_scroll setting. - */ - function infinite_setting_html() { - $notice = '<em>' . __( 'We’ve changed this option to a click-to-scroll version for you since you have footer widgets in Appearance → Widgets, or your theme uses click-to-scroll as the default behavior.', 'jetpack' ) . '</em>'; - - // If the blog has footer widgets, show a notice instead of the checkbox - if ( self::get_settings()->footer_widgets || 'click' == self::get_settings()->requested_type ) { - echo '<label>' . $notice . '</label>'; - } else { - echo '<label><input name="infinite_scroll" type="checkbox" value="1" ' . checked( 1, '' !== get_option( self::$option_name_enabled ), false ) . ' /> ' . esc_html__( 'Check to load posts as you scroll. Uncheck to show clickable button to load posts', 'jetpack' ) . '</label>'; - echo '<p class="description">' . esc_html( sprintf( _n( 'Shows %s post on each load.', 'Shows %s posts on each load.', self::posts_per_page(), 'jetpack' ), number_format_i18n( self::posts_per_page() ) ) ) . '</p>'; - } - } - - /** - * Does the legwork to determine whether the feature is enabled. - * - * @uses current_theme_supports, self::archive_supports_infinity, self::get_settings, add_filter, wp_enqueue_script, plugins_url, wp_enqueue_style, add_action - * @action template_redirect - * @return null - */ - function action_template_redirect() { - // Check that we support infinite scroll, and are on the home page. - if ( ! current_theme_supports( 'infinite-scroll' ) || ! self::archive_supports_infinity() ) - return; - - $id = self::get_settings()->container; - - // Check that we have an id. - if ( empty( $id ) ) - return; - - // Add our scripts. - wp_register_script( - 'the-neverending-homepage', - Jetpack::get_file_url_for_environment( - '_inc/build/infinite-scroll/infinity.min.js', - 'modules/infinite-scroll/infinity.js' - ), - array( 'jquery' ), - '4.0.0', - true - ); - - // Add our default styles. - wp_register_style( 'the-neverending-homepage', plugins_url( 'infinity.css', __FILE__ ), array(), '20140422' ); - - // Make sure there are enough posts for IS - if ( self::is_last_batch() ) { - return; - } - - // Add our scripts. - wp_enqueue_script( 'the-neverending-homepage' ); - - // Add our default styles. - wp_enqueue_style( 'the-neverending-homepage' ); - - add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_spinner_scripts' ) ); - - add_action( 'wp_footer', array( $this, 'action_wp_footer_settings' ), 2 ); - - add_action( 'wp_footer', array( $this, 'action_wp_footer' ), 21 ); // Core prints footer scripts at priority 20, so we just need to be one later than that - - add_filter( 'infinite_scroll_results', array( $this, 'filter_infinite_scroll_results' ), 10, 3 ); - } - - /** - * Enqueue spinner scripts. - */ - function enqueue_spinner_scripts() { - wp_enqueue_script( 'jquery.spin' ); - } - - /** - * Returns classes to be added to <body>. If it's enabled, 'infinite-scroll'. If set to continuous scroll, adds 'neverending' too. - * - * @since 4.7.0 No longer added as a 'body_class' filter but passed to JS environment and added using JS. - * - * @return string - */ - function body_class() { - $classes = ''; - // Do not add infinity-scroll class if disabled through the Reading page - $disabled = '' === get_option( self::$option_name_enabled ) ? true : false; - if ( ! $disabled || 'click' == self::get_settings()->type ) { - $classes = 'infinite-scroll'; - - if ( 'scroll' == self::get_settings()->type ) - $classes .= ' neverending'; - } - - return $classes; - } - - /** - * In case IS is activated on search page, we have to exclude initially loaded posts which match the keyword by title, not the content as they are displayed before content-matching ones - * - * @uses self::wp_query - * @uses self::get_last_post_date - * @uses self::has_only_title_matching_posts - * @return array - */ - function get_excluded_posts() { - - $excluded_posts = array(); - //loop through posts returned by wp_query call - foreach( self::wp_query()->get_posts() as $post ) { - - $orderby = isset( self::wp_query()->query_vars['orderby'] ) ? self::wp_query()->query_vars['orderby'] : ''; - $post_date = ( ! empty( $post->post_date ) ? $post->post_date : false ); - if ( 'modified' === $orderby || false === $post_date ) { - $post_date = $post->post_modified; - } - - //in case all posts initially displayed match the keyword by title we add em all to excluded posts array - //else, we add only posts which are older than last_post_date param as newer are natually excluded by last_post_date condition in the SQL query - if ( self::has_only_title_matching_posts() || $post_date <= self::get_last_post_date() ) { - array_push( $excluded_posts, $post->ID ); - } - } - return $excluded_posts; - } - - /** - * In case IS is active on search, we have to exclude posts matched by title rather than by post_content in order to prevent dupes on next pages - * - * @uses self::wp_query - * @uses self::get_excluded_posts - * @return array - */ - function get_query_vars() { - - $query_vars = self::wp_query()->query_vars; - //applies to search page only - if ( true === self::wp_query()->is_search() ) { - //set post__not_in array in query_vars in case it does not exists - if ( false === isset( $query_vars['post__not_in'] ) ) { - $query_vars['post__not_in'] = array(); - } - //get excluded posts - $excluded = self::get_excluded_posts(); - //merge them with other post__not_in posts (eg.: sticky posts) - $query_vars['post__not_in'] = array_merge( $query_vars['post__not_in'], $excluded ); - } - return $query_vars; - } - - /** - * This function checks whether all posts returned by initial wp_query match the keyword by title - * The code used in this function is borrowed from WP_Query class where it is used to construct like conditions for keywords - * - * @uses self::wp_query - * @return bool - */ - function has_only_title_matching_posts() { - - //apply following logic for search page results only - if ( false === self::wp_query()->is_search() ) { - return false; - } - - //grab the last posts in the stack as if the last one is title-matching the rest is title-matching as well - $post = end( self::wp_query()->posts ); - - //code inspired by WP_Query class - if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', self::wp_query()->get( 's' ), $matches ) ) { - $search_terms = self::wp_query()->query_vars['search_terms']; - // if the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence - if ( empty( $search_terms ) || count( $search_terms ) > 9 ) { - $search_terms = array( self::wp_query()->get( 's' ) ); - } - } else { - $search_terms = array( self::wp_query()->get( 's' ) ); - } - - //actual testing. As search query combines multiple keywords with AND, it's enough to check if any of the keywords is present in the title - $term = current( $search_terms ); - if ( ! empty( $term ) && false !== strpos( $post->post_title, $term ) ) { - return true; - } - - return false; - } - - /** - * Grab the timestamp for the initial query's last post. - * - * This takes into account the query's 'orderby' parameter and returns - * false if the posts are not ordered by date. - * - * @uses self::got_infinity - * @uses self::has_only_title_matching_posts - * @uses self::wp_query - * @return string 'Y-m-d H:i:s' or false - */ - function get_last_post_date() { - if ( self::got_infinity() ) - return; - - if ( ! self::wp_query()->have_posts() ) { - return null; - } - - //In case there are only title-matching posts in the initial WP_Query result, we don't want to use the last_post_date param yet - if ( true === self::has_only_title_matching_posts() ) { - return false; - } - - $post = end( self::wp_query()->posts ); - $orderby = isset( self::wp_query()->query_vars['orderby'] ) ? - self::wp_query()->query_vars['orderby'] : ''; - $post_date = ( ! empty( $post->post_date ) ? $post->post_date : false ); - switch ( $orderby ) { - case 'modified': - return $post->post_modified; - case 'date': - case '': - return $post_date; - default: - return false; - } - } - - /** - * Returns the appropriate `wp_posts` table field for a given query's - * 'orderby' parameter, if applicable. - * - * @param optional object $query - * @uses self::wp_query - * @return string or false - */ - function get_query_sort_field( $query = null ) { - if ( empty( $query ) ) - $query = self::wp_query(); - - $orderby = isset( $query->query_vars['orderby'] ) ? $query->query_vars['orderby'] : ''; - - switch ( $orderby ) { - case 'modified': - return 'post_modified'; - case 'date': - case '': - return 'post_date'; - default: - return false; - } - } - - /** - * Create a where clause that will make sure post queries return posts - * in the correct order, without duplicates, if a new post is added - * and we're sorting by post date. - * - * @global $wpdb - * @param string $where - * @param object $query - * @uses apply_filters - * @filter posts_where - * @return string - */ - function query_time_filter( $where, $query ) { - if ( self::got_infinity() ) { - global $wpdb; - - $sort_field = self::get_query_sort_field( $query ); - - if ( 'post_date' !== $sort_field || 'DESC' !== $_REQUEST['query_args']['order'] ) { - return $where; - } - - $query_before = sanitize_text_field( wp_unslash( $_REQUEST['query_before'] ) ); - - if ( empty( $query_before ) ) { - return $where; - } - - // Construct the date query using our timestamp - $clause = $wpdb->prepare( " AND {$wpdb->posts}.post_date <= %s", $query_before ); - - /** - * Filter Infinite Scroll's SQL date query making sure post queries - * will always return results prior to (descending sort) - * or before (ascending sort) the last post date. - * - * @module infinite-scroll - * - * @param string $clause SQL Date query. - * @param object $query Query. - * @param string $operator @deprecated Query operator. - * @param string $last_post_date @deprecated Last Post Date timestamp. - */ - $operator = 'ASC' === $_REQUEST['query_args']['order'] ? '>' : '<'; - $last_post_date = sanitize_text_field( wp_unslash( $_REQUEST['last_post_date'] ) ); - $where .= apply_filters( 'infinite_scroll_posts_where', $clause, $query, $operator, $last_post_date ); - } - - return $where; - } - - /** - * Let's overwrite the default post_per_page setting to always display a fixed amount. - * - * @param object $query - * @uses is_admin, self::archive_supports_infinity, self::get_settings - * @return null - */ - function posts_per_page_query( $query ) { - if ( ! is_admin() && self::archive_supports_infinity() && $query->is_main_query() ) - $query->set( 'posts_per_page', self::posts_per_page() ); - } - - /** - * Check if the IS output should be wrapped in a div. - * Setting value can be a boolean or a string specifying the class applied to the div. - * - * @uses self::get_settings - * @return bool - */ - function has_wrapper() { - return (bool) self::get_settings()->wrapper; - } - - /** - * Returns the Ajax url - * - * @global $wp - * @uses home_url, add_query_arg, apply_filters - * @return string - */ - function ajax_url() { - $base_url = set_url_scheme( home_url( '/' ) ); - - $ajaxurl = add_query_arg( array( 'infinity' => 'scrolling' ), $base_url ); - - /** - * Filter the Infinite Scroll Ajax URL. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param string $ajaxurl Infinite Scroll Ajax URL. - */ - return apply_filters( 'infinite_scroll_ajax_url', $ajaxurl ); - } - - /** - * Our own Ajax response, avoiding calling admin-ajax - */ - function ajax_response() { - // Only proceed if the url query has a key of "Infinity" - if ( ! self::got_infinity() ) - return false; - - // This should already be defined below, but make sure. - if ( ! defined( 'DOING_AJAX' ) ) { - define( 'DOING_AJAX', true ); - } - - @header( 'Content-Type: text/html; charset=' . get_option( 'blog_charset' ) ); - send_nosniff_header(); - - /** - * Fires at the end of the Infinite Scroll Ajax response. - * - * @module infinite-scroll - * - * @since 2.0.0 - */ - do_action( 'custom_ajax_infinite_scroll' ); - die( '0' ); - } - - /** - * Alias for renamed class method. - * - * Previously, JS settings object was unnecessarily output in the document head. - * When the hook was changed, the method name no longer made sense. - */ - function action_wp_head() { - $this->action_wp_footer_settings(); - } - - /** - * Prints the relevant infinite scroll settings in JS. - * - * @global $wp_rewrite - * @uses self::get_settings, esc_js, esc_url_raw, self::has_wrapper, __, apply_filters, do_action, self::get_query_vars - * @action wp_footer - * @return string - */ - function action_wp_footer_settings() { - global $wp_rewrite; - global $currentday; - - // Default click handle text - $click_handle_text = __( 'Older posts', 'jetpack' ); - - // If a single CPT is displayed, use its plural name instead of "posts" - // Could be empty (posts) or an array of multiple post types. - // In the latter two cases cases, the default text is used, leaving the `infinite_scroll_js_settings` filter for further customization. - $post_type = self::wp_query()->get( 'post_type' ); - - // If it's a taxonomy, try to change the button text. - if ( is_tax() ) { - // Get current taxonomy slug. - $taxonomy_slug = self::wp_query()->get( 'taxonomy' ); - - // Get taxonomy settings. - $taxonomy = get_taxonomy( $taxonomy_slug ); - - // Check if the taxonomy is attached to one post type only and use its plural name. - // If not, use "Posts" without confusing the users. - if ( count( $taxonomy->object_type ) < 2 ) { - $post_type = $taxonomy->object_type[0]; - } - } - - if ( is_string( $post_type ) && ! empty( $post_type ) ) { - $post_type = get_post_type_object( $post_type ); - - if ( is_object( $post_type ) && ! is_wp_error( $post_type ) ) { - if ( isset( $post_type->labels->name ) ) { - $cpt_text = $post_type->labels->name; - } elseif ( isset( $post_type->label ) ) { - $cpt_text = $post_type->label; - } - - if ( isset( $cpt_text ) ) { - /* translators: %s is the name of a custom post type */ - $click_handle_text = sprintf( __( 'More %s', 'jetpack' ), $cpt_text ); - unset( $cpt_text ); - } - } - } - - unset( $post_type ); - - // Base JS settings - $js_settings = array( - 'id' => self::get_settings()->container, - 'ajaxurl' => esc_url_raw( self::ajax_url() ), - 'type' => esc_js( self::get_settings()->type ), - 'wrapper' => self::has_wrapper(), - 'wrapper_class' => is_string( self::get_settings()->wrapper ) ? esc_js( self::get_settings()->wrapper ) : 'infinite-wrap', - 'footer' => is_string( self::get_settings()->footer ) ? esc_js( self::get_settings()->footer ) : self::get_settings()->footer, - 'click_handle' => esc_js( self::get_settings()->click_handle ), - 'text' => esc_js( $click_handle_text ), - 'totop' => esc_js( __( 'Scroll back to top', 'jetpack' ) ), - 'currentday' => $currentday, - 'order' => 'DESC', - 'scripts' => array(), - 'styles' => array(), - 'google_analytics' => false, - 'offset' => max( 1, self::wp_query()->get( 'paged' ) ), // Pass through the current page so we can use that to offset the first load. - 'history' => array( - 'host' => preg_replace( '#^http(s)?://#i', '', untrailingslashit( esc_url( get_home_url() ) ) ), - 'path' => self::get_request_path(), - 'use_trailing_slashes' => $wp_rewrite->use_trailing_slashes, - 'parameters' => self::get_request_parameters(), - ), - 'query_args' => self::get_query_vars(), - 'query_before' => current_time( 'mysql' ), - 'last_post_date' => self::get_last_post_date(), - 'body_class' => self::body_class(), - ); - - // Optional order param - if ( isset( $_REQUEST['order'] ) ) { - $order = strtoupper( $_REQUEST['order'] ); - - if ( in_array( $order, array( 'ASC', 'DESC' ) ) ) - $js_settings['order'] = $order; - } - - /** - * Filter the Infinite Scroll JS settings outputted in the head. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param array $js_settings Infinite Scroll JS settings. - */ - $js_settings = apply_filters( 'infinite_scroll_js_settings', $js_settings ); - - /** - * Fires before Infinite Scroll outputs inline JavaScript in the head. - * - * @module infinite-scroll - * - * @since 2.0.0 - */ - do_action( 'infinite_scroll_wp_head' ); - - ?> - <script type="text/javascript"> - //<![CDATA[ - var infiniteScroll = JSON.parse( decodeURIComponent( '<?php echo - rawurlencode( json_encode( array( 'settings' => $js_settings ) ) ); - ?>' ) ); - //]]> - </script> - <?php - } - - /** - * Build path data for current request. - * Used for Google Analytics and pushState history tracking. - * - * @global $wp_rewrite - * @global $wp - * @uses user_trailingslashit, sanitize_text_field, add_query_arg - * @return string|bool - */ - private function get_request_path() { - global $wp_rewrite; - - if ( $wp_rewrite->using_permalinks() ) { - global $wp; - - // If called too early, bail - if ( ! isset( $wp->request ) ) - return false; - - // Determine path for paginated version of current request - if ( false != preg_match( '#' . $wp_rewrite->pagination_base . '/\d+/?$#i', $wp->request ) ) - $path = preg_replace( '#' . $wp_rewrite->pagination_base . '/\d+$#i', $wp_rewrite->pagination_base . '/%d', $wp->request ); - else - $path = $wp->request . '/' . $wp_rewrite->pagination_base . '/%d'; - - // Slashes everywhere we need them - if ( 0 !== strpos( $path, '/' ) ) - $path = '/' . $path; - - $path = user_trailingslashit( $path ); - } else { - // Clean up raw $_REQUEST input - $path = array_map( 'sanitize_text_field', $_REQUEST ); - $path = array_filter( $path ); - - $path['paged'] = '%d'; - - $path = add_query_arg( $path, '/' ); - } - - return empty( $path ) ? false : $path; - } - - /** - * Return query string for current request, prefixed with '?'. - * - * @return string - */ - private function get_request_parameters() { - $uri = $_SERVER[ 'REQUEST_URI' ]; - $uri = preg_replace( '/^[^?]*(\?.*$)/', '$1', $uri, 1, $count ); - if ( $count != 1 ) - return ''; - return $uri; - } - - /** - * Provide IS with a list of the scripts and stylesheets already present on the page. - * Since posts may contain require additional assets that haven't been loaded, this data will be used to track the additional assets. - * - * @global $wp_scripts, $wp_styles - * @action wp_footer - * @return string - */ - function action_wp_footer() { - global $wp_scripts, $wp_styles; - - $scripts = is_a( $wp_scripts, 'WP_Scripts' ) ? $wp_scripts->done : array(); - /** - * Filter the list of scripts already present on the page. - * - * @module infinite-scroll - * - * @since 2.1.2 - * - * @param array $scripts Array of scripts present on the page. - */ - $scripts = apply_filters( 'infinite_scroll_existing_scripts', $scripts ); - - $styles = is_a( $wp_styles, 'WP_Styles' ) ? $wp_styles->done : array(); - /** - * Filter the list of styles already present on the page. - * - * @module infinite-scroll - * - * @since 2.1.2 - * - * @param array $styles Array of styles present on the page. - */ - $styles = apply_filters( 'infinite_scroll_existing_stylesheets', $styles ); - - ?><script type="text/javascript"> - jQuery.extend( infiniteScroll.settings.scripts, <?php echo json_encode( $scripts ); ?> ); - jQuery.extend( infiniteScroll.settings.styles, <?php echo json_encode( $styles ); ?> ); - </script><?php - } - - /** - * Identify additional scripts required by the latest set of IS posts and provide the necessary data to the IS response handler. - * - * @global $wp_scripts - * @uses sanitize_text_field, add_query_arg - * @filter infinite_scroll_results - * @return array - */ - function filter_infinite_scroll_results( $results, $query_args, $wp_query ) { - // Don't bother unless there are posts to display - if ( 'success' != $results['type'] ) - return $results; - - // Parse and sanitize the script handles already output - $initial_scripts = isset( $_REQUEST['scripts'] ) && is_array( $_REQUEST['scripts'] ) ? array_map( 'sanitize_text_field', $_REQUEST['scripts'] ) : false; - - if ( is_array( $initial_scripts ) ) { - global $wp_scripts; - - // Identify new scripts needed by the latest set of IS posts - $new_scripts = array_diff( $wp_scripts->done, $initial_scripts ); - - // If new scripts are needed, extract relevant data from $wp_scripts - if ( ! empty( $new_scripts ) ) { - $results['scripts'] = array(); - - foreach ( $new_scripts as $handle ) { - // Abort if somehow the handle doesn't correspond to a registered script - if ( ! isset( $wp_scripts->registered[ $handle ] ) ) - continue; - - // Provide basic script data - $script_data = array( - 'handle' => $handle, - 'footer' => ( is_array( $wp_scripts->in_footer ) && in_array( $handle, $wp_scripts->in_footer ) ), - 'extra_data' => $wp_scripts->print_extra_script( $handle, false ) - ); - - // Base source - $src = $wp_scripts->registered[ $handle ]->src; - - // Take base_url into account - if ( strpos( $src, 'http' ) !== 0 ) - $src = $wp_scripts->base_url . $src; - - // Version and additional arguments - if ( null === $wp_scripts->registered[ $handle ]->ver ) - $ver = ''; - else - $ver = $wp_scripts->registered[ $handle ]->ver ? $wp_scripts->registered[ $handle ]->ver : $wp_scripts->default_version; - - if ( isset( $wp_scripts->args[ $handle ] ) ) - $ver = $ver ? $ver . '&' . $wp_scripts->args[$handle] : $wp_scripts->args[$handle]; - - // Full script source with version info - $script_data['src'] = add_query_arg( 'ver', $ver, $src ); - - // Add script to data that will be returned to IS JS - array_push( $results['scripts'], $script_data ); - } - } - } - - // Expose additional script data to filters, but only include in final `$results` array if needed. - if ( ! isset( $results['scripts'] ) ) - $results['scripts'] = array(); - - /** - * Filter the additional scripts required by the latest set of IS posts. - * - * @module infinite-scroll - * - * @since 2.1.2 - * - * @param array $results['scripts'] Additional scripts required by the latest set of IS posts. - * @param array|bool $initial_scripts Set of scripts loaded on each page. - * @param array $results Array of Infinite Scroll results. - * @param array $query_args Array of Query arguments. - * @param WP_Query $wp_query WP Query. - */ - $results['scripts'] = apply_filters( - 'infinite_scroll_additional_scripts', - $results['scripts'], - $initial_scripts, - $results, - $query_args, - $wp_query - ); - - if ( empty( $results['scripts'] ) ) - unset( $results['scripts' ] ); - - // Parse and sanitize the style handles already output - $initial_styles = isset( $_REQUEST['styles'] ) && is_array( $_REQUEST['styles'] ) ? array_map( 'sanitize_text_field', $_REQUEST['styles'] ) : false; - - if ( is_array( $initial_styles ) ) { - global $wp_styles; - - // Identify new styles needed by the latest set of IS posts - $new_styles = array_diff( $wp_styles->done, $initial_styles ); - - // If new styles are needed, extract relevant data from $wp_styles - if ( ! empty( $new_styles ) ) { - $results['styles'] = array(); - - foreach ( $new_styles as $handle ) { - // Abort if somehow the handle doesn't correspond to a registered stylesheet - if ( ! isset( $wp_styles->registered[ $handle ] ) ) - continue; - - // Provide basic style data - $style_data = array( - 'handle' => $handle, - 'media' => 'all' - ); - - // Base source - $src = $wp_styles->registered[ $handle ]->src; - - // Take base_url into account - if ( strpos( $src, 'http' ) !== 0 ) - $src = $wp_styles->base_url . $src; - - // Version and additional arguments - if ( null === $wp_styles->registered[ $handle ]->ver ) - $ver = ''; - else - $ver = $wp_styles->registered[ $handle ]->ver ? $wp_styles->registered[ $handle ]->ver : $wp_styles->default_version; - - if ( isset($wp_styles->args[ $handle ] ) ) - $ver = $ver ? $ver . '&' . $wp_styles->args[$handle] : $wp_styles->args[$handle]; - - // Full stylesheet source with version info - $style_data['src'] = add_query_arg( 'ver', $ver, $src ); - - // Parse stylesheet's conditional comments if present, converting to logic executable in JS - if ( isset( $wp_styles->registered[ $handle ]->extra['conditional'] ) && $wp_styles->registered[ $handle ]->extra['conditional'] ) { - // First, convert conditional comment operators to standard logical operators. %ver is replaced in JS with the IE version - $style_data['conditional'] = str_replace( array( - 'lte', - 'lt', - 'gte', - 'gt' - ), array( - '%ver <=', - '%ver <', - '%ver >=', - '%ver >', - ), $wp_styles->registered[ $handle ]->extra['conditional'] ); - - // Next, replace any !IE checks. These shouldn't be present since WP's conditional stylesheet implementation doesn't support them, but someone could be _doing_it_wrong(). - $style_data['conditional'] = preg_replace( '#!\s*IE(\s*\d+){0}#i', '1==2', $style_data['conditional'] ); - - // Lastly, remove the IE strings - $style_data['conditional'] = str_replace( 'IE', '', $style_data['conditional'] ); - } - - // Parse requested media context for stylesheet - if ( isset( $wp_styles->registered[ $handle ]->args ) ) - $style_data['media'] = esc_attr( $wp_styles->registered[ $handle ]->args ); - - // Add stylesheet to data that will be returned to IS JS - array_push( $results['styles'], $style_data ); - } - } - } - - // Expose additional stylesheet data to filters, but only include in final `$results` array if needed. - if ( ! isset( $results['styles'] ) ) - $results['styles'] = array(); - - /** - * Filter the additional styles required by the latest set of IS posts. - * - * @module infinite-scroll - * - * @since 2.1.2 - * - * @param array $results['styles'] Additional styles required by the latest set of IS posts. - * @param array|bool $initial_styles Set of styles loaded on each page. - * @param array $results Array of Infinite Scroll results. - * @param array $query_args Array of Query arguments. - * @param WP_Query $wp_query WP Query. - */ - $results['styles'] = apply_filters( - 'infinite_scroll_additional_stylesheets', - $results['styles'], - $initial_styles, - $results, - $query_args, - $wp_query - ); - - if ( empty( $results['styles'] ) ) - unset( $results['styles' ] ); - - // Lastly, return the IS results array - return $results; - } - - /** - * Runs the query and returns the results via JSON. - * Triggered by an AJAX request. - * - * @global $wp_query - * @global $wp_the_query - * @uses current_theme_supports, get_option, self::wp_query, current_user_can, apply_filters, self::get_settings, add_filter, WP_Query, remove_filter, have_posts, wp_head, do_action, add_action, this::render, this::has_wrapper, esc_attr, wp_footer, sharing_register_post_for_share_counts, get_the_id - * @return string or null - */ - function query() { - if ( ! isset( $_REQUEST['page'] ) || ! current_theme_supports( 'infinite-scroll' ) ) - die; - - $page = (int) $_REQUEST['page']; - - // Sanitize and set $previousday. Expected format: dd.mm.yy - if ( preg_match( '/^\d{2}\.\d{2}\.\d{2}$/', $_REQUEST['currentday'] ) ) { - global $previousday; - $previousday = $_REQUEST['currentday']; - } - - $post_status = array( 'publish' ); - if ( current_user_can( 'read_private_posts' ) ) - array_push( $post_status, 'private' ); - - $order = in_array( $_REQUEST['order'], array( 'ASC', 'DESC' ) ) ? $_REQUEST['order'] : 'DESC'; - - $query_args = array_merge( self::wp_query()->query_vars, array( - 'paged' => $page, - 'post_status' => $post_status, - 'posts_per_page' => self::posts_per_page(), - 'order' => $order - ) ); - - // 4.0 ?s= compatibility, see https://core.trac.wordpress.org/ticket/11330#comment:50 - if ( empty( $query_args['s'] ) && ! isset( self::wp_query()->query['s'] ) ) { - unset( $query_args['s'] ); - } - - // By default, don't query for a specific page of a paged post object. - // This argument can come from merging self::wp_query() into $query_args above. - // Since IS is only used on archives, we should always display the first page of any paged content. - unset( $query_args['page'] ); - - /** - * Filter the array of main query arguments. - * - * @module infinite-scroll - * - * @since 2.0.1 - * - * @param array $query_args Array of Query arguments. - */ - $query_args = apply_filters( 'infinite_scroll_query_args', $query_args ); - - add_filter( 'posts_where', array( $this, 'query_time_filter' ), 10, 2 ); - - $GLOBALS['wp_the_query'] = $GLOBALS['wp_query'] = $infinite_scroll_query = new WP_Query(); - - $infinite_scroll_query->query( $query_args ); - - remove_filter( 'posts_where', array( $this, 'query_time_filter' ), 10, 2 ); - - $results = array(); - - if ( have_posts() ) { - // Fire wp_head to ensure that all necessary scripts are enqueued. Output isn't used, but scripts are extracted in self::action_wp_footer. - ob_start(); - wp_head(); - while ( ob_get_length() ) { - ob_end_clean(); - } - - $results['type'] = 'success'; - - /** - * Gather renderer callbacks. These will be called in order and allow multiple callbacks to be queued. Once content is found, no futher callbacks will run. - * - * @module infinite-scroll - * - * @since 6.0.0 - */ - $callbacks = apply_filters( 'infinite_scroll_render_callbacks', array( - self::get_settings()->render, // This is the setting callback e.g. from add theme support. - ) ); - - // Append fallback callback. That rhymes. - $callbacks[] = array( $this, 'render' ); - - foreach ( $callbacks as $callback ) { - if ( false !== $callback && is_callable( $callback ) ) { - rewind_posts(); - ob_start(); - add_action( 'infinite_scroll_render', $callback ); - - /** - * Fires when rendering Infinite Scroll posts. - * - * @module infinite-scroll - * - * @since 2.0.0 - */ - do_action( 'infinite_scroll_render' ); - - $results['html'] = ob_get_clean(); - remove_action( 'infinite_scroll_render', $callback ); - } - if ( ! empty( $results['html'] ) ) { - break; - } - } - - // If primary and fallback rendering methods fail, prevent further IS rendering attempts. Otherwise, wrap the output if requested. - if ( empty( $results['html'] ) ) { - unset( $results['html'] ); - /** - * Fires when Infinite Scoll doesn't render any posts. - * - * @module infinite-scroll - * - * @since 2.0.0 - */ - do_action( 'infinite_scroll_empty' ); - $results['type'] = 'empty'; - } elseif ( $this->has_wrapper() ) { - $wrapper_classes = is_string( self::get_settings()->wrapper ) ? self::get_settings()->wrapper : 'infinite-wrap'; - $wrapper_classes .= ' infinite-view-' . $page; - $wrapper_classes = trim( $wrapper_classes ); - - $results['html'] = '<div class="' . esc_attr( $wrapper_classes ) . '" id="infinite-view-' . $page . '" data-page-num="' . $page . '">' . $results['html'] . '</div>'; - } - - // Fire wp_footer to ensure that all necessary scripts are enqueued. Output isn't used, but scripts are extracted in self::action_wp_footer. - ob_start(); - wp_footer(); - while ( ob_get_length() ) { - ob_end_clean(); - } - - if ( 'success' == $results['type'] ) { - global $currentday; - $results['lastbatch'] = self::is_last_batch(); - $results['currentday'] = $currentday; - } - - // Loop through posts to capture sharing data for new posts loaded via Infinite Scroll - if ( 'success' == $results['type'] && function_exists( 'sharing_register_post_for_share_counts' ) ) { - global $jetpack_sharing_counts; - - while( have_posts() ) { - the_post(); - - sharing_register_post_for_share_counts( get_the_ID() ); - } - - $results['postflair'] = array_flip( $jetpack_sharing_counts ); - } - } else { - /** This action is already documented in modules/infinite-scroll/infinity.php */ - do_action( 'infinite_scroll_empty' ); - $results['type'] = 'empty'; - } - - wp_send_json( - /** - * Filter the Infinite Scroll results. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param array $results Array of Infinite Scroll results. - * @param array $query_args Array of main query arguments. - * @param WP_Query $wp_query WP Query. - */ - apply_filters( 'infinite_scroll_results', $results, $query_args, self::wp_query() ) - ); - } - - /** - * Update the $allowed_vars array with the standard WP public and private - * query vars, as well as taxonomy vars - * - * @global $wp - * @param array $allowed_vars - * @filter infinite_scroll_allowed_vars - * @return array - */ - function allowed_query_vars( $allowed_vars ) { - global $wp; - - $allowed_vars += $wp->public_query_vars; - $allowed_vars += $wp->private_query_vars; - $allowed_vars += $this->get_taxonomy_vars(); - - foreach ( array_keys( $allowed_vars, 'paged' ) as $key ) { - unset( $allowed_vars[ $key ] ); - } - - return array_unique( $allowed_vars ); - } - - /** - * Returns an array of stock and custom taxonomy query vars - * - * @global $wp_taxonomies - * @return array - */ - function get_taxonomy_vars() { - global $wp_taxonomies; - - $taxonomy_vars = array(); - foreach ( $wp_taxonomies as $taxonomy => $t ) { - if ( $t->query_var ) - $taxonomy_vars[] = $t->query_var; - } - - // still needed? - $taxonomy_vars[] = 'tag_id'; - - return $taxonomy_vars; - } - - /** - * Update the $query_args array with the parameters provided via AJAX/GET. - * - * @param array $query_args - * @filter infinite_scroll_query_args - * @return array - */ - function inject_query_args( $query_args ) { - /** - * Filter the array of allowed Infinite Scroll query arguments. - * - * @module infinite-scroll - * - * @since 2.6.0 - * - * @param array $args Array of allowed Infinite Scroll query arguments. - * @param array $query_args Array of query arguments. - */ - $allowed_vars = apply_filters( 'infinite_scroll_allowed_vars', array(), $query_args ); - - $query_args = array_merge( $query_args, array( - 'suppress_filters' => false, - ) ); - - if ( is_array( $_REQUEST[ 'query_args' ] ) ) { - foreach ( $_REQUEST[ 'query_args' ] as $var => $value ) { - if ( in_array( $var, $allowed_vars ) && ! empty( $value ) ) - $query_args[ $var ] = $value; - } - } - - return $query_args; - } - - /** - * Rendering fallback used when themes don't specify their own handler. - * - * @uses have_posts, the_post, get_template_part, get_post_format - * @action infinite_scroll_render - * @return string - */ - function render() { - while ( have_posts() ) { - the_post(); - - get_template_part( 'content', get_post_format() ); - } - } - - /** - * Allow plugins to filter what archives Infinite Scroll supports - * - * @uses current_theme_supports, is_home, is_archive, apply_filters, self::get_settings - * @return bool - */ - public static function archive_supports_infinity() { - $supported = current_theme_supports( 'infinite-scroll' ) && ( is_home() || is_archive() || is_search() ); - - // Disable when previewing a non-active theme in the customizer - if ( is_customize_preview() && ! $GLOBALS['wp_customize']->is_theme_active() ) { - return false; - } - - /** - * Allow plugins to filter what archives Infinite Scroll supports. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param bool $supported Does the Archive page support Infinite Scroll. - * @param object self::get_settings() IS settings provided by theme. - */ - return (bool) apply_filters( 'infinite_scroll_archive_supported', $supported, self::get_settings() ); - } - - /** - * The Infinite Blog Footer - * - * @uses self::get_settings, self::archive_supports_infinity, self::default_footer - * @return string or null - */ - function footer() { - // Bail if theme requested footer not show - if ( false == self::get_settings()->footer ) - return; - - // We only need the new footer for the 'scroll' type - if ( 'scroll' != self::get_settings()->type || ! self::archive_supports_infinity() ) - return; - - if ( self::is_last_batch() ) { - return; - } - - // Display a footer, either user-specified or a default - if ( false !== self::get_settings()->footer_callback && is_callable( self::get_settings()->footer_callback ) ) - call_user_func( self::get_settings()->footer_callback, self::get_settings() ); - else - self::default_footer(); - } - - /** - * Render default IS footer - * - * @uses __, wp_get_theme, apply_filters, home_url, esc_attr, get_bloginfo, bloginfo - * @return string - * - */ - private function default_footer() { - if ( '' !== get_privacy_policy_url() ) { - $credits = get_the_privacy_policy_link() . '<span role="separator" aria-hidden="true"> / </span>'; - } else { - $credits = ''; - } - $credits .= sprintf( - '<a href="https://wordpress.org/" rel="noopener noreferrer" target="_blank" rel="generator">%1$s</a> ', - __( 'Proudly powered by WordPress', 'jetpack' ) - ); - $credits .= sprintf( - /* translators: %1$s is the name of a theme */ - __( 'Theme: %1$s.', 'jetpack' ), - wp_get_theme()->Name - ); - /** - * Filter Infinite Scroll's credit text. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param string $credits Infinite Scroll credits. - */ - $credits = apply_filters( 'infinite_scroll_credit', $credits ); - - ?> - <div id="infinite-footer"> - <div class="container"> - <div class="blog-info"> - <a id="infinity-blog-title" href="<?php echo home_url( '/' ); ?>" rel="home"> - <?php bloginfo( 'name' ); ?> - </a> - </div> - <div class="blog-credits"> - <?php echo $credits; ?> - </div> - </div> - </div><!-- #infinite-footer --> - <?php - } - - /** - * Ensure that IS doesn't interfere with Grunion by stripping IS query arguments from the Grunion redirect URL. - * When arguments are present, Grunion redirects to the IS AJAX endpoint. - * - * @param string $url - * @uses remove_query_arg - * @filter grunion_contact_form_redirect_url - * @return string - */ - public function filter_grunion_redirect_url( $url ) { - // Remove IS query args, if present - if ( false !== strpos( $url, 'infinity=scrolling' ) ) { - $url = remove_query_arg( array( - 'infinity', - 'action', - 'page', - 'order', - 'scripts', - 'styles' - ), $url ); - } - - return $url; - } -}; - -/** - * Initialize The_Neverending_Home_Page - */ -function the_neverending_home_page_init() { - if ( ! current_theme_supports( 'infinite-scroll' ) ) - return; - - new The_Neverending_Home_Page; -} -add_action( 'init', 'the_neverending_home_page_init', 20 ); - -/** - * Check whether the current theme is infinite-scroll aware. - * If so, include the files which add theme support. - */ -function the_neverending_home_page_theme_support() { - if ( - defined( 'IS_WPCOM' ) && IS_WPCOM && - defined( 'REST_API_REQUEST' ) && REST_API_REQUEST && - ! doing_action( 'restapi_theme_after_setup_theme' ) - ) { - // Don't source theme compat files until we're in the site's context - return; - } - $theme_name = get_stylesheet(); - - /** - * Filter the path to the Infinite Scroll compatibility file. - * - * @module infinite-scroll - * - * @since 2.0.0 - * - * @param string $str IS compatibility file path. - * @param string $theme_name Theme name. - */ - $customization_file = apply_filters( 'infinite_scroll_customization_file', dirname( __FILE__ ) . "/themes/{$theme_name}.php", $theme_name ); - - if ( is_readable( $customization_file ) ) - require_once( $customization_file ); -} -add_action( 'after_setup_theme', 'the_neverending_home_page_theme_support', 5 ); - -/** - * Early accommodation of the Infinite Scroll AJAX request - */ -if ( The_Neverending_Home_Page::got_infinity() ) { - /** - * If we're sure this is an AJAX request (i.e. the HTTP_X_REQUESTED_WITH header says so), - * indicate it as early as possible for actions like init - */ - if ( ! defined( 'DOING_AJAX' ) && - isset( $_SERVER['HTTP_X_REQUESTED_WITH'] ) && - strtoupper( $_SERVER['HTTP_X_REQUESTED_WITH'] ) == 'XMLHTTPREQUEST' - ) { - define( 'DOING_AJAX', true ); - } - - // Don't load the admin bar when doing the AJAX response. - show_admin_bar( false ); -} |