特定のWordPressプラグインを管理画面メニューでON/OFFするプラグイン

plugin.php

<?php

/*
 * Plugin Name: Plugin On Off
 */

$poo = new Plugin_On_Off();
$poo->register_hooks();

class Plugin_On_Off {
	
	const TARGET_PLUGIN_NAME = 'WP BASIC Auth';
	const TARGET_PLUGIN_FILE = 'wp-basic-auth/plugin.php';
	
	
	public function register_hooks() {
		
		add_action( 'admin_menu', array( $this, 'admin_menu' ) );
		add_action( 'admin_print_footer_scripts', array( $this, 'admin_print_footer_scripts' ) );
		
	}
	
	public function admin_menu() {
		$on_off = ( $this->is_target_active() ) ? ' Off' : ' On';
		$label = self::TARGET_PLUGIN_NAME.$on_off;
		add_menu_page( $label, $label, 'manage_options', 'plugin-on-off' );
	}
	
	public function admin_print_footer_scripts() {

		$plugin_file = self::TARGET_PLUGIN_FILE;

		if ( $this->is_target_active() ) {
			$action_link = wp_nonce_url( 'plugins.php?action=deactivate&plugin=' . $plugin_file, 'deactivate-plugin_' . $plugin_file );
		} else {
			$action_link = wp_nonce_url( 'plugins.php?action=activate&plugin=' . $plugin_file, 'activate-plugin_' . $plugin_file );
		}
		$action_link = str_replace( '&amp;', '&', $action_link );

	?><script>
		jQuery(function($){
			var menu_slug = 'plugin-on-off';
			$('a.toplevel_page_' + menu_slug).prop({
				href: "<?php echo $action_link; ?>",
				target: "_blank"
			});
		});
	</script><?php		
	}
	
	public function is_target_active() {
		return is_plugin_active( self::TARGET_PLUGIN_FILE ) ;
	}
	
	
}