ClassLoader: Introduce additional ClassLoader

The Loader replaces TableLoader in a generic manner. FormLoader is handled by Icinga\Application\ClassLoader for every module.

refs #13064

library/Director/ClassLoader.php

@@ -0,0 +1,100 @@
+<?php
+
+namespace Icinga\Module\Director;
+
+/**
+ * PSR-4 ClassLoader for namespace extensions inside Icinga Director
+ *
+ * e.g. \Icinga\Module\Director\Forms\SomeTestForm -> ./application/forms/SomeTestForm.php
+ *
+ * @package Icinga\Module\Director
+ */
+class ClassLoader
+{
+    /**
+     * Prefix to support here
+     */
+    const NAMESPACE_PREFIX = 'Icinga\\Module\\Director\\';
+
+    /**
+     * Hard-coded length of NAMESPACE_PREFIX
+     */
+    const PREFIX_LENGTH = 23;
+
+    /**
+     * Namespaces below ./application that get loaded
+     * @var array
+     */
+    protected static $APPLICATION_NAMESPACES = array('tables');
+
+    /**
+     * Absolute path of the installed module
+     *
+     * @var string
+     */
+    protected $moduleHome;
+
+    public function __construct($moduleHome)
+    {
+        $this->moduleHome = $moduleHome;
+    }
+
+    /**
+     * Loader function for spl_autoload
+     *
+     * @param $class
+     */
+    public function loadClass($class)
+    {
+        if (strncmp(self::NAMESPACE_PREFIX, $class, self::PREFIX_LENGTH) !== 0) {
+            return;
+        }
+
+        // get the relative class name
+        $relativeClass = substr($class, self::PREFIX_LENGTH);
+        $relativeClassA = explode('\\', $relativeClass);
+
+        if (! empty($relativeClassA)) {
+            $subPath = strtolower(array_shift($relativeClassA));
+
+            if (in_array($subPath, self::$APPLICATION_NAMESPACES)) {
+                $file = $this->moduleHome
+                    . DIRECTORY_SEPARATOR
+                    . 'application'
+                    . DIRECTORY_SEPARATOR
+                    . $subPath
+                    . DIRECTORY_SEPARATOR
+                    . implode(DIRECTORY_SEPARATOR, $relativeClassA)
+                    . '.php';
+
+                if (file_exists($file)) {
+                    require $file;
+                }
+            }
+        }
+    }
+
+    /**
+     * Register {@link loadClass()} as an autoloader
+     */
+    public function register()
+    {
+        spl_autoload_register(array($this, 'loadClass'));
+    }
+
+    /**
+     * Unregister {@link loadClass()} as an autoloader
+     */
+    public function unregister()
+    {
+        spl_autoload_unregister(array($this, 'loadClass'));
+    }
+
+    /**
+     * Unregister this as an autoloader
+     */
+    public function __destruct()
+    {
+        $this->unregister();
+    }
+}

library/Director/Web/Controller/ActionController.php

@@ -11,10 +11,9 @@
 use Icinga\Module\Director\IcingaConfig\IcingaConfig;
 use Icinga\Module\Director\Monitoring;
 use Icinga\Module\Director\Objects\IcingaEndpoint;
-use Icinga\Module\Director\Web\Form\FormLoader;
 use Icinga\Module\Director\Web\Form\QuickBaseForm;
+use Icinga\Module\Director\Web\Form\QuickForm;
 use Icinga\Module\Director\Web\Table\QuickTable;
-use Icinga\Module\Director\Web\Table\TableLoader;
 use Icinga\Security\SecurityException;
 use Icinga\Web\Controller;
 use Icinga\Web\Widget;
@@ -98,9 +97,16 @@ protected function applyPaginationLimits(Paginatable $paginatable, $limit = 25,
      */
     public function loadForm($name)
     {
-        $form = FormLoader::load($name, $this->Module());
+        $class = '\\Icinga\\Module\\Director\\Forms\\' . ucfirst($name) . 'Form';
+
+        $options = array();
+        $options['icingaModule'] = $this->Module();
+
+        /** @var QuickBaseForm $form */
+        $form = new $class($options);
         if ($this->getRequest()->isApiRequest()) {
             // TODO: Ask form for API support?
+            /** @var QuickForm $form */
             $form->setApiRequest();
         }
 
@@ -114,7 +120,8 @@ public function loadForm($name)
      */
     public function loadTable($name)
     {
-        return TableLoader::load($name, $this->Module());
+        $class = '\\Icinga\\Module\\Director\\Tables\\' . ucfirst($name) . 'Table';
+        return new $class();
     }
 
     protected function sendJson($object)

run.php

@@ -1,6 +1,8 @@
 <?php
 
-use Icinga\Application\Icinga;
+use Icinga\Module\Director\ClassLoader;
+
+/** @var \Icinga\Application\Modules\Module $this */
 
 $prefix = '\\Icinga\\Module\\Director\\';
 
@@ -44,3 +46,6 @@
 $this->provideHook('director/Job', $prefix . 'Job\\SyncJob');
 
 $this->provideHook('cube/ActionLinks', 'CubeLinks');
+
+$loader = new ClassLoader(__DIR__);
+$loader->register();