🗑️ Add deprecation notice for Impressum::set_plugin_file() and Admin::set_plugin_file()

Author: MatzeKitt

impressum.php

@@ -78,5 +78,4 @@
 // deprecated, don't use anymore
 if ( ! \defined( 'IMPRESSUM_BASE' ) ) \define( 'IMPRESSUM_BASE', \plugin_basename( __FILE__ ) );
 
-Impressum::get_instance()->set_plugin_file( __FILE__ );
 Impressum::get_instance()->init();

inc/class-admin.php

@@ -24,7 +24,7 @@ class Admin {
 	/**
 	 * @var		string The full path to the main plugin file
 	 */
-	public $plugin_file = '';
+	public $plugin_file = \EPI_IMPRESSUM_FILE;
 
 	/**
 	 * Initialize the admin functions.
@@ -616,6 +616,16 @@ public function register_plus_tab( $tabs ) {
 	 * @param	string	$file The path to the file
 	 */
 	public function set_plugin_file( $file ) {
+		\_doing_it_wrong(
+			__METHOD__,
+			\sprintf(
+				/* translators: alternative method */
+				\esc_html__( 'Use %s instead', 'impressum' ),
+				'EPI_IMPRESSUM_FILE'
+			),
+			'2.1.0'
+		);
+		
 		if ( \file_exists( $file ) ) {
 			$this->plugin_file = $file;
 		}

inc/class-impressum.php

@@ -34,7 +34,7 @@ class Impressum {
 	/**
 	 * @var		string The full path to the main plugin file
 	 */
-	public $plugin_file = '';
+	public $plugin_file = \EPI_IMPRESSUM_FILE;
 
 	/**
 	 * @var		array All settings fields.
@@ -668,9 +668,18 @@ public function load_textdomain() {
 	 * @param	string	$file The path to the file
 	 */
 	public function set_plugin_file( $file ) {
+		\_doing_it_wrong(
+			__METHOD__,
+			\sprintf(
+				/* translators: alternative method */
+				\esc_html__( 'Use %s instead', 'impressum' ),
+				'EPI_IMPRESSUM_FILE'
+			),
+			'2.1.0'
+		);
+		
 		if ( \file_exists( $file ) ) {
 			$this->plugin_file = $file;
-			$this->admin->set_plugin_file( $this->plugin_file );
 		}
 	}