Call checkRequirements for createComponent methods

Author: enumag

src/Application/UI/Component.php

@@ -106,6 +106,22 @@ public function checkRequirements($element)
 	}
 
 
+	/**
+	 * Component factory. Delegates the creation of components to a createComponent<Name> method.
+	 * @param string $name
+	 * @return Nette\ComponentModel\IComponent the created component (optionally)
+	 */
+	protected function createComponent($name)
+	{
+		$method = 'createComponent' . ucfirst($name);
+		if (method_exists($this, $method)) {
+			$this->checkRequirements($this->getReflection()->getMethod($method));
+		}
+
+		return parent::createComponent($name);
+	}
+
+
 	/**
 	 * Access to reflection.
 	 * @return ComponentReflection

tests/UI/Component.createComponent().phpt

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Test: Nette\Application\UI\Component::createComponent()
+ */
+
+use Nette\Application;
+use Tester\Assert;
+
+require __DIR__ . '/../bootstrap.php';
+
+
+class TestSubComponent extends Application\UI\Component
+{
+}
+
+class TestComponent extends Application\UI\Component
+{
+	public $calledWith;
+
+	public function checkRequirements($element)
+	{
+		$this->calledWith = $element;
+	}
+
+	public function createComponentTest()
+	{
+		return new TestSubComponent;
+	}
+}
+
+$component = new TestComponent;
+Assert::true($component->getComponent('test') instanceof TestSubComponent);
+Assert::true($component->calledWith instanceof ReflectionMethod);
+Assert::same('createComponentTest', $component->calledWith->getName());
+Assert::same(TestComponent::class, $component->calledWith->getDeclaringClass()->getName());