258 lines
8.8 KiB
PHP
258 lines
8.8 KiB
PHP
<?php
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/**
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* Module Name: Infinite Scroll
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* Module Description: Add support for infinite scroll to your theme.
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* Sort Order: 26
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* First Introduced: 2.0
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* Requires Connection: No
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* Auto Activate: No
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* Module Tags: Appearance
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* Additional Search Queries: scroll, infinite, infinite scroll
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*/
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/**
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* Jetpack-specific elements of Infinite Scroll
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*/
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class Jetpack_Infinite_Scroll_Extras {
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/**
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* Class variables
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*/
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// Oh look, a singleton
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private static $__instance = null;
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// Option names
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private $option_name_google_analytics = 'infinite_scroll_google_analytics';
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/**
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* Singleton implementation
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*
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* @return object
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*/
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public static function instance() {
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if ( ! is_a( self::$__instance, 'Jetpack_Infinite_Scroll_Extras' ) )
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self::$__instance = new Jetpack_Infinite_Scroll_Extras;
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return self::$__instance;
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}
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/**
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* Register actions and filters
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*
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* @uses add_action, add_filter
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* @return null
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*/
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private function __construct() {
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add_action( 'jetpack_modules_loaded', array( $this, 'action_jetpack_modules_loaded' ) );
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add_action( 'admin_init', array( $this, 'action_admin_init' ), 11 );
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add_action( 'after_setup_theme', array( $this, 'action_after_setup_theme' ), 5 );
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add_filter( 'infinite_scroll_js_settings', array( $this, 'filter_infinite_scroll_js_settings' ) );
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add_action( 'wp_enqueue_scripts', array( $this, 'action_wp_enqueue_scripts' ) );
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}
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/**
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* Enable "Configure" button on module card
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*
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* @uses Jetpack::enable_module_configurable, Jetpack::module_configuration_load
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* @action jetpack_modules_loaded
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* @return null
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*/
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public function action_jetpack_modules_loaded() {
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Jetpack::enable_module_configurable( __FILE__ );
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Jetpack::module_configuration_load( __FILE__, array( $this, 'module_configuration_load' ) );
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}
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/**
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* Redirect configure button to Settings > Reading
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*
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* @uses wp_safe_redirect, admin_url
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* @return null
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*/
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public function module_configuration_load() {
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wp_safe_redirect( admin_url( 'options-reading.php#infinite-scroll-options' ) );
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exit;
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}
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/**
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* Register Google Analytics setting
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*
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* @uses add_settings_field, __, register_setting
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* @action admin_init
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* @return null
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*/
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public function action_admin_init() {
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add_settings_field( $this->option_name_google_analytics, '<span id="infinite-scroll-google-analytics">' . __( 'Use Google Analytics with Infinite Scroll', 'jetpack' ) . '</span>', array( $this, 'setting_google_analytics' ), 'reading' );
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register_setting( 'reading', $this->option_name_google_analytics, array( $this, 'sanitize_boolean_value' ) );
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}
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/**
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* Render Google Analytics option
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*
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* @uses checked, get_option, __
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* @return html
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*/
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public function setting_google_analytics() {
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echo '<label><input name="infinite_scroll_google_analytics" type="checkbox" value="1" ' . checked( true, (bool) get_option( $this->option_name_google_analytics, false ), false ) . ' /> ' . __( 'Track each Infinite Scroll post load as a page view in Google Analytics', 'jetpack' ) . '</br><small>' . __( 'By checking the box above, each new set of posts loaded via Infinite Scroll will be recorded as a page view in Google Analytics.', 'jetpack' ) . '</small>' . '</label>';
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}
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/**
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* Sanitize value as a boolean
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*
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* @param mixed $value
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* @return bool
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*/
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public function sanitize_boolean_value( $value ) {
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return (bool) $value;
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}
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/**
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* Load theme's infinite scroll annotation file, if present in the IS plugin.
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* The `setup_theme` action is used because the annotation files should be using `after_setup_theme` to register support for IS.
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*
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* As released in Jetpack 2.0, a child theme's parent wasn't checked for in the plugin's bundled support, hence the convoluted way the parent is checked for now.
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*
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* @uses is_admin, wp_get_theme, get_theme, get_current_theme, apply_filters
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* @action setup_theme
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* @return null
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*/
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function action_after_setup_theme() {
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$theme = function_exists( 'wp_get_theme' ) ? wp_get_theme() : get_theme( get_current_theme() );
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if ( ! is_a( $theme, 'WP_Theme' ) && ! is_array( $theme ) )
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return;
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/** This filter is already documented in modules/infinite-scroll/infinity.php */
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$customization_file = apply_filters( 'infinite_scroll_customization_file', dirname( __FILE__ ) . "/infinite-scroll/themes/{$theme['Stylesheet']}.php", $theme['Stylesheet'] );
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if ( is_readable( $customization_file ) ) {
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require_once( $customization_file );
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}
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elseif ( ! empty( $theme['Template'] ) ) {
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$customization_file = dirname( __FILE__ ) . "/infinite-scroll/themes/{$theme['Template']}.php";
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if ( is_readable( $customization_file ) )
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require_once( $customization_file );
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}
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}
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/**
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* Modify Infinite Scroll configuration information
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*
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* @uses Jetpack::get_active_modules, is_user_logged_in, stats_get_options, Jetpack_Options::get_option, get_option, JETPACK__API_VERSION, JETPACK__VERSION
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* @filter infinite_scroll_js_settings
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* @return array
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*/
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public function filter_infinite_scroll_js_settings( $settings ) {
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// Provide WP Stats info for tracking Infinite Scroll loads
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// Abort if Stats module isn't active
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if ( in_array( 'stats', Jetpack::get_active_modules() ) ) {
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// Abort if user is logged in but logged-in users shouldn't be tracked.
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if ( is_user_logged_in() && function_exists( 'stats_get_options' ) ) {
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$stats_options = stats_get_options();
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$track_loggedin_users = isset( $stats_options['reg_users'] ) ? (bool) $stats_options['reg_users'] : false;
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if ( ! $track_loggedin_users )
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return $settings;
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}
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// We made it this far, so gather the data needed to track IS views
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$settings['stats'] = 'blog=' . Jetpack_Options::get_option( 'id' ) . '&host=' . parse_url( get_option( 'home' ), PHP_URL_HOST ) . '&v=ext&j=' . JETPACK__API_VERSION . ':' . JETPACK__VERSION;
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// Pagetype parameter
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$settings['stats'] .= '&x_pagetype=infinite';
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if ( 'click' == $settings['type'] )
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$settings['stats'] .= '-click';
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$settings['stats'] .= '-jetpack';
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}
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// Check if Google Analytics tracking is requested
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$settings['google_analytics'] = (bool) get_option( $this->option_name_google_analytics );
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return $settings;
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}
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/**
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* Always load certain scripts when IS is enabled, as they can't be loaded after `document.ready` fires, meaning they can't leverage IS's script loader.
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*
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* @global $videopress
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* @uses do_action()
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* @uses apply_filters()
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* @uses wp_enqueue_style()
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* @uses wp_enqueue_script()
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* @action wp_enqueue_scripts
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* @return null
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*/
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public function action_wp_enqueue_scripts() {
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// Do not load scripts and styles on singular pages and static pages
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$load_scripts_and_styles = ! ( is_singular() || is_page() );
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if (
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/**
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* Allow plugins to enqueue all Infinite Scroll scripts and styles on singular pages as well.
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*
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* @module infinite-scroll
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*
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* @since 3.1.0
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*
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* @param bool $load_scripts_and_styles Should scripts and styles be loaded on singular pahes and static pages. Default to false.
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*/
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! apply_filters( 'jetpack_infinite_scroll_load_scripts_and_styles', $load_scripts_and_styles )
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) {
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return;
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}
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// VideoPress stand-alone plugin
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global $videopress;
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if ( ! empty( $videopress ) && The_Neverending_Home_Page::archive_supports_infinity() && is_a( $videopress, 'VideoPress' ) && method_exists( $videopress, 'enqueue_scripts' ) ) {
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$videopress->enqueue_scripts();
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}
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// VideoPress Jetpack module
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if ( Jetpack::is_module_active( 'videopress' ) ) {
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wp_enqueue_script( 'videopress' );
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}
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// Fire the post_gallery action early so Carousel scripts are present.
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if ( Jetpack::is_module_active( 'carousel' ) ) {
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/** This filter is already documented in core/wp-includes/media.php */
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do_action( 'post_gallery', '', '' );
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}
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// Always enqueue Tiled Gallery scripts when both IS and Tiled Galleries are enabled
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if ( Jetpack::is_module_active( 'tiled-gallery' ) ) {
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Jetpack_Tiled_Gallery::default_scripts_and_styles();
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}
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// Core's Audio and Video Shortcodes
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if (
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/** This filter is already documented in core/wp-includes/media.php */
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'mediaelement' === apply_filters( 'wp_audio_shortcode_library', 'mediaelement' )
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) {
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wp_enqueue_style( 'wp-mediaelement' );
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wp_enqueue_script( 'wp-mediaelement' );
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}
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if (
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/** This filter is already documented in core/wp-includes/media.php */
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'mediaelement' === apply_filters( 'wp_video_shortcode_library', 'mediaelement' )
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) {
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wp_enqueue_style( 'wp-mediaelement' );
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wp_enqueue_script( 'wp-mediaelement' );
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}
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}
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}
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Jetpack_Infinite_Scroll_Extras::instance();
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/**
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* Load main IS file
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*/
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require_once( dirname( __FILE__ ) . "/infinite-scroll/infinity.php" );
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/**
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* Remove the IS annotation loading function bundled with the IS plugin in favor of the Jetpack-specific version in Jetpack_Infinite_Scroll_Extras::action_after_setup_theme();
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*/
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remove_action( 'after_setup_theme', 'the_neverending_home_page_theme_support', 5 );
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