lightspeeddevelopment/lsx

<?php

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Holds the speed optimization functions for LSX.
 *
 * @author   LightSpeed
 * @category Widgets
 * @package  LSX
 * @return   LSX_Optimisation
 */
class LSX_Optimisation {

    /**
     * Holds class instance
     *
     * @since 1.0.0
     * @var      object
     */
    protected static $instance = null;

    /**
     * Constructor.
     */
    public function __construct() {
        //add_filter( 'style_loader_tag', array( $this, 'preload_css' ), 100, 4 );
        //add_filter( 'script_loader_tag', array( $this, 'defer_parsing_of_js' ), 100, 3 );
        add_action( 'init', array( $this, 'pum_remove_admin_bar_tools' ), 100 );
    }
    /**
     * Return an instance of this class.
     *
     * @since 1.0.0
     * @return    object    A single instance of this class.
     */
    public static function get_instance() {
        // If the single instance hasn't been set, set it now.
        if ( null === self::$instance ) {
            self::$instance = new self;
        }
        return self::$instance;
    }

    /**
     * Defers the JS loading till Last
     *
     * @param  string $url The url to check and defer.
     * @return string
     */
    public function preload_css( $tag, $handle, $href, $media ) {
        if ( 'lsx_fonts' === $handle || 'fontawesome' === $handle ) {
            $tag = str_replace( 'href', ' preload href', $tag );
        }
        return $tag;
    }

    /**
     * Defers the JS loading till Last
     *
     * @param  string $url The url to check and defer.
     * @return string
     */
    public function defer_parsing_of_js( $tag, $handle, $href ) {
        $skip_defer = apply_filters( 'lsx_defer_parsing_of_js', false, $tag, $handle, $href );
        if ( ! is_admin() && false !== stripos( $href, '.js' ) && false === stripos( $href, 'jquery.js' ) && false === $skip_defer ) {
            $tag = str_replace( 'src=', ' defer src=', $tag );
        }
        return $tag;
    }

    public function pum_remove_admin_bar_tools() {
        remove_action( 'admin_bar_menu', array( 'PUM_Modules_Admin_Bar', 'toolbar_links' ), 999 );
        remove_action( 'wp_footer', array( 'PUM_Modules_Admin_Bar', 'admin_bar_styles' ), 999 );
        remove_action( 'init', array( 'PUM_Modules_Admin_Bar', 'show_debug_bar' ) );
    }
}
LSX_Optimisation::get_instance();