refactor: DRY upses layout wrapper

tests/test_layout_wrapper.php

@@ -0,0 +1,65 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ |                                                                         |
+ | Regression checks for shared layout wrapper routing in upses.php        |
+ |                                                                         |
+ | Run: php tests/test_layout_wrapper.php                                  |
+ +-------------------------------------------------------------------------+
+ */
+
+$pass = 0;
+$fail = 0;
+$events = array();
+
+function assert_true($label, $value) {
+	global $pass, $fail;
+
+	if ($value) {
+		echo "PASS  $label\n";
+		$pass++;
+	} else {
+		echo "FAIL  $label\n";
+		$fail++;
+	}
+}
+
+function top_header() {
+	global $events;
+	$events[] = 'top_header';
+}
+
+function bottom_footer() {
+	global $events;
+	$events[] = 'bottom_footer';
+}
+
+require_once __DIR__ . '/../ui_helpers.php';
+
+$events = array();
+$layout_invocations = 0;
+
+apcupsd_render_with_layout(function () use (&$events, &$layout_invocations) {
+	$layout_invocations++;
+	$events[] = 'content';
+});
+
+assert_true('layout callback executes exactly once', $layout_invocations === 1);
+assert_true('layout wrapper call order is top->content->bottom', $events === array('top_header', 'content', 'bottom_footer'));
+
+$upses_source = file_get_contents(__DIR__ . '/../upses.php');
+
+assert_true(
+	"edit action uses shared layout helper",
+	strpos($upses_source, "apcupsd_render_with_layout('ups_edit');") !== false
+);
+assert_true(
+	"default action uses shared layout helper",
+	strpos($upses_source, "apcupsd_render_with_layout('upses');") !== false
+);
+
+echo "\n";
+echo "Results: $pass passed, $fail failed\n";
+
+exit($fail > 0 ? 1 : 0);

ui_helpers.php

@@ -0,0 +1,19 @@
+<?php
+/*
+ +-------------------------------------------------------------------------+
+ | Copyright (C) 2004-2026 The Cacti Group                                 |
+ |                                                                         |
+ | This program is free software; you can redistribute it and/or           |
+ | modify it under the terms of the GNU General Public License             |
+ | as published by the Free Software Foundation; either version 2          |
+ | of the License, or (at your option) any later version.                  |
+ +-------------------------------------------------------------------------+
+ */
+
+if (!function_exists('apcupsd_render_with_layout')) {
+	function apcupsd_render_with_layout($renderer) {
+		top_header();
+		call_user_func($renderer);
+		bottom_footer();
+	}
+}

upses.php

@@ -27,6 +27,7 @@
 require_once($config['base_path'] . '/lib/api_data_source.php');
 require_once($config['base_path'] . '/lib/poller.php');
 require_once($config['base_path'] . '/lib/utility.php');
+require_once(__DIR__ . '/ui_helpers.php');
 
 $ups_actions = array(
 	1 => __('Delete', 'apcupsd'),
@@ -205,18 +206,10 @@
 
 		break;
 	case 'edit':
-		top_header();
-
-		ups_edit();
-
-		bottom_footer();
+		apcupsd_render_with_layout('ups_edit');
 		break;
 	default:
-		top_header();
-
-		upses();
-
-		bottom_footer();
+		apcupsd_render_with_layout('upses');
 		break;
 }