Initial commit

litespeed-esi-divi-menus.php

@@ -0,0 +1,111 @@
+<?php
+/*
+	Plugin Name: LiteSpeed ESI Divi Menus
+	Description: Replace Divi primary and secondary header menus with LiteSpeed ESI blocks
+	Version: 1.0
+	Author: Abundant Designs LLC
+	Author URI: https://www.abundantdesigns.com
+	License: GPLv2 or later
+	Text Domain: litespeed-esi-divi-menus
+ */
+
+if ( ! defined('ABSPATH') ) {
+    die() ;
+}
+
+
+class LiteSpeed_ESI_Divi_Menus
+{
+    private static $_instance ;
+
+    const DIVI_PRIMARY_MENU_ID = "top-menu";
+    const DIVI_SECONDARY_MENU_ID = "et-secondary-nav";
+    const ESI_DIVI_PRIMARY_MENU_BLOCK = "litespeed_esi_divi_menu_primary";
+    const ESI_DIVI_SECONDARY_MENU_BLOCK = "litespeed_esi_divi_menu_secondary";
+
+    /**
+	 * Define the core functionality of the plugin.
+	 */
+    private function __construct()
+    {
+        add_action( 'init', array( $this, 'init' ) );
+    }
+
+
+    /**
+     * Initialize hooks 
+     */
+    public function init() 
+    {
+        if ( ! defined( 'ET_CORE' ) ) return ;
+
+        if ( method_exists( 'LiteSpeed_Cache_API', 'esi_enabled' ) && LiteSpeed_Cache_API::esi_enabled() ) {
+            LiteSpeed_Cache_API::hook_tpl_not_esi( 'LiteSpeed_ESI_Divi_Menus::is_not_esi' ) ;
+            LiteSpeed_Cache_API::hook_tpl_esi( self::ESI_DIVI_PRIMARY_MENU_BLOCK, 'LiteSpeed_ESI_Divi_Menus::load_primary_menu' ) ;
+            LiteSpeed_Cache_API::hook_tpl_esi( self::ESI_DIVI_SECONDARY_MENU_BLOCK, 'LiteSpeed_ESI_Divi_Menus::load_secondary_menu' ) ;
+        }
+    }
+
+    /**
+     * Hooked to LiteSpeed_Cache_API::hook_tpl_not_esi
+     *
+     * If the request is not an ESI request, hook to the add to wishlist button filter to replace it as an esi block. 
+     */
+    public static function is_not_esi()
+    {
+        add_filter( 'wp_nav_menu', 'LiteSpeed_ESI_Divi_Menus::replace_wp_nav_menu', 999, 2) ;
+    }
+
+
+    /*
+     * Hooked to 'wp_nav_menu' filter
+     * 
+     * The Divi primary and secondary menus contain user-specific content. Replace them with ESI blocks.
+     */
+    public static function replace_wp_nav_menu( $nav_menu_html, $args ) {
+        if ( $args->menu_id == self::DIVI_PRIMARY_MENU_ID ) {
+            return LiteSpeed_Cache_API::esi_url( self::ESI_DIVI_PRIMARY_MENU_BLOCK, 'LiteSpeed Divi Primary Menu' ) ;
+        }
+        if ( $args->menu_id == self::DIVI_SECONDARY_MENU_ID ) {
+            return LiteSpeed_Cache_API::esi_url( self::ESI_DIVI_SECONDARY_MENU_BLOCK, 'LiteSpeed Divi Secondary Menu' ) ;
+        }
+
+        return $nav_menu_html;
+    }
+
+    /**
+     * Hooked to LiteSpeed_Cache_API::hook_tpl_esi 
+     */
+    public static function load_primary_menu( ) {
+        wp_nav_menu( array(
+            'theme_location' => 'primary-menu',
+            'container'      => '',
+            'fallback_cb'    => '',
+            'menu_class'     => 'nav',
+            'menu_id'        => 'top-menu'
+        ) );
+    }
+    public static function load_secondary_menu( ) {
+        wp_nav_menu( array(
+            'theme_location' => 'secondary-menu',
+            'container'      => '',
+            'fallback_cb'    => '',
+            'menu_id'        => 'et-secondary-nav'
+        ) );
+    }
+
+
+    /**
+     * Get the current instance object.
+     */
+    public static function get_instance()
+    {
+        if ( ! isset(self::$_instance) ) {
+            self::$_instance = new self() ;
+        }
+
+        return self::$_instance ;
+    }
+}
+
+LiteSpeed_ESI_Divi_Menus::get_instance() ;