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msd2/tracking/piwik/core/Http/ControllerResolver.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Http;
+
+use DI\FactoryInterface;
+use Exception;
+use Piwik\Plugin;
+use Piwik\Plugin\Controller;
+use Piwik\Plugin\ReportsProvider;
+use Piwik\Session;
+use Piwik\Plugin\WidgetsProvider;
+
+/**
+ * Resolves the controller that will handle the request.
+ *
+ * A controller is a PHP callable.
+ */
+class ControllerResolver
+{
+    /**
+     * @var FactoryInterface
+     */
+    private $abstractFactory;
+
+    /**
+     * @var WidgetsProvider
+     */
+    private $widgets;
+
+    public function __construct(FactoryInterface $abstractFactory, WidgetsProvider $widgets)
+    {
+        $this->abstractFactory = $abstractFactory;
+        $this->widgets = $widgets;
+    }
+
+    /**
+     * @param string $module
+     * @param string|null $action
+     * @param array $parameters
+     * @throws Exception Controller not found.
+     * @return callable The controller is a PHP callable.
+     */
+    public function getController($module, $action, array &$parameters)
+    {
+        $controller = $this->createPluginController($module, $action);
+        if ($controller) {
+            return $controller;
+        }
+
+        $controller = $this->createWidgetController($module, $action, $parameters);
+        if ($controller) {
+            return $controller;
+        }
+
+        $controller = $this->createReportController($module, $action, $parameters);
+        if ($controller) {
+            return $controller;
+        }
+
+        throw new Exception(sprintf("Action '%s' not found in the module '%s'", $action, $module));
+    }
+
+    private function createPluginController($module, $action)
+    {
+        $controllerClass = "Piwik\\Plugins\\$module\\Controller";
+        if (!class_exists($controllerClass)) {
+            return null;
+        }
+
+        /** @var $controller Controller */
+        $controller = $this->abstractFactory->make($controllerClass);
+
+        $action = $action ?: $controller->getDefaultAction();
+
+        if (!is_callable(array($controller, $action)) || !in_array($action, get_class_methods($controller))) {
+            return null;
+        }
+
+        return array($controller, $action);
+    }
+
+    private function createWidgetController($module, $action, array &$parameters)
+    {
+        $widget = $this->widgets->factory($module, $action);
+
+        if (!$widget) {
+            return;
+        }
+
+        $parameters['widget'] = $widget;
+
+        return array($this->createCoreHomeController(), 'renderWidget');
+    }
+
+    private function createReportController($module, $action, array &$parameters)
+    {
+        $report = ReportsProvider::factory($module, $action);
+
+        if (!$report) {
+            return null;
+        }
+
+        $parameters['report'] = $report;
+
+        return array($this->createCoreHomeController(), 'renderReportWidget');
+    }
+
+    private function createCoreHomeController()
+    {
+        return $this->abstractFactory->make('Piwik\Plugins\CoreHome\Controller');
+    }
+}