Files
wc-tier-and-package-prices/includes/class-wc-tpp-admin.php
magdev 2b2c06794b Release version 1.1.16 - Singleton pattern for settings page
Fixed persistent duplicate settings page rendering by implementing proper
singleton pattern for admin class and caching settings instance.

Fixes:
- Settings page still appearing twice despite v1.1.15 fix
- Multiple instantiation of WC_TPP_Admin class
- Duplicate creation of WC_TPP_Settings instances

Changes:
- Implemented singleton pattern for WC_TPP_Admin class
- Added private static $instance property with get_instance() method
- Made WC_TPP_Admin constructor private
- Added static $settings_instance property to cache settings page
- Modified add_settings_page() to check and reuse cached settings instance
- Changed instantiation from new WC_TPP_Admin() to WC_TPP_Admin::get_instance()

Technical Details:
- Ensures only one WC_TPP_Admin instance exists throughout plugin lifecycle
- Prevents duplicate filter registrations even if woocommerce_get_settings_pages called multiple times
- Settings page object created once and reused on subsequent filter calls
- Follows WordPress/WooCommerce best practices for singleton implementation

Updated Files:
- includes/class-wc-tpp-admin.php (singleton pattern implementation)
- wc-tier-and-package-prices.php (version 1.1.16)
- composer.json (version 1.1.16)
- CHANGELOG.md (v1.1.16 section)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-22 20:01:27 +01:00

49 lines
1.4 KiB
PHP

<?php
/**
* Admin settings and configuration
*/
if (!defined('ABSPATH')) {
exit;
}
if (!class_exists('WC_TPP_Admin')) {
class WC_TPP_Admin {
private static $instance = null;
private static $settings_instance = null;
public static function get_instance() {
if (null === self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
private function __construct() {
add_filter('woocommerce_get_settings_pages', array($this, 'add_settings_page'));
add_action('admin_enqueue_scripts', array($this, 'enqueue_admin_scripts'));
}
/**
* Add settings page to WooCommerce settings
*/
public function add_settings_page($settings) {
if (null === self::$settings_instance) {
self::$settings_instance = include WC_TPP_PLUGIN_DIR . 'includes/class-wc-tpp-settings.php';
}
$settings[] = self::$settings_instance;
return $settings;
}
public function enqueue_admin_scripts($hook) {
if ('woocommerce_page_wc-settings' === $hook || 'post.php' === $hook || 'post-new.php' === $hook) {
wp_enqueue_style('wc-tpp-admin', WC_TPP_PLUGIN_URL . 'assets/css/admin.css', array(), WC_TPP_VERSION);
wp_enqueue_script('wc-tpp-admin', WC_TPP_PLUGIN_URL . 'assets/js/admin.js', array('jquery'), WC_TPP_VERSION, true);
}
}
}
WC_TPP_Admin::get_instance();
}