[Hummingbird Pro] - Fix conflict with plugin Oxygen

hmbp-fix-conflict-oxygen.php

<?php
/**
 * Plugin Name: [Hummingbird Pro] - Fix conflict with plugin Oxygen
 * Description: [Hummingbird Pro] - Fix conflict with plugin Oxygen - 1152415940647285
 * Task: 0/11289012348292/117091689172289
 * Author: Thobk @ WPMUDEV
 * Author URI: https://premium.wpmudev.org
 * License: GPLv2 or later
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

add_action( 'after_setup_theme', 'wpmudev_hmbp_fix_conflict_with_plugin_oxygen_func', 100 );

function wpmudev_hmbp_fix_conflict_with_plugin_oxygen_func() {
	if( defined('WPHB_VERSION') && class_exists( 'Hummingbird\WP_Hummingbird' ) && class_exists('Hummingbird\Core\Settings') && defined('CT_VERSION') ){
		if( is_admin() || ! Hummingbird\Core\Settings::get_setting( 'enabled', 'minify' ) ){
			return;
		}

		function wpmudev_custom_oxy_print_cached_css() {

			if ( !defined("SHOW_CT_BUILDER") ) {

				global $wp_current_filter;
				// remove 'wp_head' from current filters
				array_pop( $wp_current_filter );
				// push fake filter name to be popped later instead of actual 'wp_head'
				array_push( $wp_current_filter, "wp_head_fake");

				do_action("ct_builder_start");
				do_action("ct_builder_end");

				/**
				 * Add-on hook
				 *
				 * @since 1.4
				 */
				do_action("oxygen_enqueue_frontend_scripts");

				global $wp_styles, $oxygen_vsb_css_styles;
				if( is_null( $oxygen_vsb_css_styles ) ){
					$oxygen_vsb_css_styles = new WP_Styles;
					$oxygen_vsb_css_styles->registered = array();//reset register
				}

				// check whether to load universal css or not
				if ( get_option("oxygen_vsb_universal_css_cache")=='true' && get_option("oxygen_vsb_universal_css_cache_success")==true 
					 // TODO: check if there are other cases that may load universal CSS into builder
					 && (!isset($_REQUEST['action']) || stripslashes($_REQUEST['action']) !== 'ct_render_widget') ) {
					
					$universal_css_url = get_option('oxygen_vsb_universal_css_url');
					$universal_css_url = add_query_arg("cache", get_option("oxygen_vsb_last_save_time"), $universal_css_url);

					if(is_admin()) $universal_css_url = str_replace("universal.css", "universal_admin.css", $universal_css_url);

					// check if to load dynamic xlink or cached CSS files
					if (!oxygen_vsb_load_cached_css_files()) {
						$oxygen_vsb_css_styles->add("oxygen-styles", ct_get_current_url('xlink=css&nouniversal=true') );
						$oxygen_vsb_css_styles->enqueue(array('oxygen-styles'));
					}

					$oxygen_vsb_css_styles->add("oxygen-universal-styles",  $universal_css_url);
					$oxygen_vsb_css_styles->enqueue(array('oxygen-universal-styles'));
				}
				else {
					// check if to load dynamic xlink or cached CSS files
					if (!oxygen_vsb_load_cached_css_files()) {
						$oxygen_vsb_css_styles->add("oxygen-styles", ct_get_current_url( 'xlink=css' ) );
						$oxygen_vsb_css_styles->enqueue(array('oxygen-styles'));
					}
				}



				// Register/Enque assets
				if( $oxygen_vsb_css_styles->registered ){
					// registered
					foreach( $oxygen_vsb_css_styles->registered as $dependency ){
						$wp_styles->add( $dependency->handle, $dependency->src );
					}

					// enqueue
					if( $oxygen_vsb_css_styles->queue ){
						$wp_styles->enqueue( $oxygen_vsb_css_styles->queue );
					}
				}
			}
		}
		remove_action( 'wp_head', 'oxy_print_cached_css', 999999 );
		add_action( 'wp_head', 'wpmudev_custom_oxy_print_cached_css', 4 );


		// fix CTFrontendBuilderUI is not defined
		function wpmudev_oxygen_reenqueue_script() {
			wp_deregister_script( 'selector-detector-controller' );
			wp_dequeue_script( 'selector-detector-controller' );
			wp_register_script( 'selector-detector-controller', 	OSD_URI . 'includes/osd.controller.js', array('ct-angular-ui') );
			wp_enqueue_script( 'selector-detector-controller' );
		}
		if( defined('OSD_URI') ){
			add_action( 'wp_enqueue_scripts', 'wpmudev_oxygen_reenqueue_script', 99 );
		}

	}
}