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✏️ Editing: class_yet.php

<?php
/**
 * Core class
 */

// Prevent direct call
if ( !defined( 'WPINC' ) ) die;

// Class
class GW_GoPricing_Yet {
	
	protected static $instance = null;
	protected $globals;	
	protected static $plugin_version = '1.2.0';
	protected static $db_version = '1.0.0';
	protected static $min_core_version = '3.3.2';	
	protected static $plugin_prefix = 'go_pricing_yet';
	protected static $plugin_slug = 'go-pricing-yet';	
	protected $plugin_file;
	protected static $plugin_base;
	protected $plugin_dir;
	protected $plugin_path;
	protected $plugin_url;

/**
	 * Constructor of the class
	 *
	 * @return void
	 */		  
	 
	public function __construct( ) {
				
		// Load plugin text domain
		$this->load_plugin_textdomain();
		
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_public_styles' ) );

}

/**
	 * Return an instance of this class
	 *
	 * @return array
	 */
	 
	
	public static function instance( $plugin_file = __FILE__ ) {
					
		static $globals;
		if ( self::$instance == null ) {
			self::$instance = new self;
			$globals = self::$instance->set_globals( $plugin_file );
			self::$instance->load_includes();
			self::$instance->register_addon();
			
		}
		
		return $globals;
		
	}
	
	 
	/**
	 * Fired when the plugin is activated 
	 *
	 * @return void
	 */			 
	 
	public static function activate( $network_wide ) {
	
		if ( class_exists( 'GW_GoPricing' ) ) $core_plugin = GW_GoPricing::instance();
		
		if ( !class_exists( 'GW_GoPricing' ) || version_compare( $core_plugin['plugin_version'], self::$min_core_version, '<' ) ) {
			
			update_option ( self::$plugin_prefix . '_activate_error', sprintf( __( 'Yet Skin - Add-on for Go Pricing requires at least Go Pricing - WordPress Responsive Pricing Tables plugin version %s to run!', 'go_pricing_yet_textdomain' ), self::$min_core_version ) ); 
			
		}

}

/**
	 * Fired when the plugin is deactivated 
	 *
	 * @return void
	 */		 
	 
	public static function deactivate() {

}

/**
	 * Fired when the plugin is uninstalled
	 *
	 * @return void
	 */			 
	 
	public static function uninstall( $network_wide ) {
		
	}
	
	
	/**
	 * Print activation error admin notices
	 */
	 	
	public static function activate_error() {

$error_notice = get_option( self::$plugin_prefix . '_activate_error' );
		if ( $error_notice ) {
			printf( '<div id="message" class="error">%s</div>', $error_notice );
			deactivate_plugins( self::$plugin_base );
			delete_option( self::$plugin_prefix . '_activate_error' );			
		}

}

/**
	 * Set global variables
	 *
	 * @return array
	 */

public function set_globals( $plugin_file ) {

$this->plugin_file = $plugin_file;
		self::$plugin_base = plugin_basename( $this->plugin_file );
		$this->plugin_dir = dirname( plugin_basename( $this->plugin_file ) );
		$this->plugin_path = plugin_dir_path( $this->plugin_file );
		$this->plugin_url =	plugin_dir_url( $this->plugin_file );

$globals = array (
			'plugin_version' => self::$plugin_version,
			'db_version' => self::$db_version,
			'min_core_version' => self::$min_core_version,
			'plugin_prefix' => self::$plugin_prefix,
			'plugin_slug' => self::$plugin_slug,
			'plugin_file' => $this->plugin_file,
			'plugin_base' => self::$plugin_base,
			'plugin_dir' => $this->plugin_dir,
			'plugin_path' => $this->plugin_path,
			'plugin_url' => $this->plugin_url,
		);	
		
		if ( $core_instance = $this->can_run() ) {
			$globals['core'] = $core_instance;
		} else {
			update_option ( self::$plugin_prefix . '_activate_error', sprintf( __( 'Yet Skin - Add-on for Go Pricing requires at least Go Pricing - WordPress Responsive Pricing Tables plugin version %s to run!', 'go_pricing_yet_textdomain' ), self::$min_core_version ) ); 
		}
		
		$this->globals = $globals;		
		return $globals;
	
	}
	
	
	/**
	 * Load required includes
	 *
	 * @return void
	 */		
	
	public function load_includes() {
		
		if ( !isset( $this->globals['core'] ) ) return;

include_once ( $this->plugin_path . 'includes/globals/style.php' );
		include_once ( $this->plugin_path . 'includes/shortcodes/header.php' );
		include_once ( $this->plugin_path . 'includes/shortcodes/row.php' );

// Include & init admin classes
		if ( is_admin() ) {
			
			//Include & init admin main class
			include_once ( $this->plugin_path . 'includes/admin/class_admin.php' );
			GW_GoPricing_Yet_Admin::instance( $this->globals );
			
		}
	
	}
	
	
	/**
	 * Detect if the plugin can run
	 *
	 * @return bool | array
	 */			 
	 
	public function can_run() {
		
		if ( class_exists( 'GW_GoPricing' ) ) {
			$core_instance = GW_GoPricing::instance();
			if ( version_compare( $core_instance['plugin_version'], self::$min_core_version, '>=' ) ) return $core_instance;			
		}

return false;
		
	}

/**
	 * Load the plugin text domain for translation
	 *
	 * @return void
	 */			 
	 
	public function load_plugin_textdomain() {

load_plugin_textdomain( 'go_pricing_yet_textdomain', FALSE, $this->plugin_dir . '/lang/' );
	
	}

/**
	 * Register addon
	 *
	 * @return void
	 */		
	
	public function register_addon() {

if ( !class_exists( 'GW_GoPricing_Addon' ) ) return;

GW_GoPricing_Addon::register(
			array(
				'id' => 'yet_addon',
				'name' => 'Yet Skin - Add-on for Go Pricing',
				'slug' => 'gw-' . self::$plugin_slug,
				'base' => self::$plugin_base,
				'version' => self::$plugin_version,
			)
		);	
		
	}

/**
	 * Enqueue public styles
	 *
	 * @return void
	 */		
	 
	
	public function enqueue_public_styles() {
		
		wp_enqueue_style( self::$plugin_slug . '-styles', $this->plugin_url . 'assets/css/yet_styles.css', array( 'go-pricing-styles' ), self::$plugin_version );		
		
	}
	
}

MR SKB