wp-google-analytics.php
| 1 | <?php |
| 2 | /* |
| 3 | Copyright 2006 Aaron D. Campbell (email : wp_plugins@xavisys.com) |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /** |
| 21 | * Jetpack_Google_Analytics is the class that handles ALL of the plugin functionality. |
| 22 | * It helps us avoid name collisions |
| 23 | * http://codex.wordpress.org/Writing_a_Plugin#Avoiding_Function_Name_Collisions |
| 24 | */ |
| 25 | |
| 26 | if ( ! defined( 'ABSPATH' ) ) { |
| 27 | exit; |
| 28 | } |
| 29 | |
| 30 | require_once( plugin_basename( 'classes/wp-google-analytics-utils.php' ) ); |
| 31 | require_once( plugin_basename( 'classes/wp-google-analytics-options.php' ) ); |
| 32 | require_once( plugin_basename( 'classes/wp-google-analytics-legacy.php' ) ); |
| 33 | require_once( plugin_basename( 'classes/wp-google-analytics-universal.php' ) ); |
| 34 | |
| 35 | class Jetpack_Google_Analytics { |
| 36 | |
| 37 | /** |
| 38 | * @var Jetpack_Google_Analytics - Static property to hold our singleton instance |
| 39 | */ |
| 40 | static $instance = false; |
| 41 | |
| 42 | /** |
| 43 | * @var Static property to hold concrete analytics impl that does the work (universal or legacy) |
| 44 | */ |
| 45 | static $analytics = false; |
| 46 | |
| 47 | /** |
| 48 | * This is our constructor, which is private to force the use of get_instance() |
| 49 | * |
| 50 | * @return void |
| 51 | */ |
| 52 | private function __construct() { |
| 53 | // At this time, we only leverage universal analytics when enhanced ecommerce is selected and WooCommerce is active. |
| 54 | // Otherwise, don't bother emitting the tracking ID or fetching analytics.js |
| 55 | if ( class_exists( 'WooCommerce' ) && Jetpack_Google_Analytics_Options::enhanced_ecommerce_tracking_is_enabled() ) { |
| 56 | $analytics = new Jetpack_Google_Analytics_Universal(); |
| 57 | } else { |
| 58 | $analytics = new Jetpack_Google_Analytics_Legacy(); |
| 59 | } |
| 60 | |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Function to instantiate our class and make it a singleton |
| 65 | */ |
| 66 | public static function get_instance() { |
| 67 | if ( ! self::$instance ) { |
| 68 | self::$instance = new self; |
| 69 | } |
| 70 | |
| 71 | return self::$instance; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | global $jetpack_google_analytics; |
| 76 | $jetpack_google_analytics = Jetpack_Google_Analytics::get_instance(); |
| 77 |