diff --git a/composer.json b/composer.json
index e4765127..3cdaaa67 100644
--- a/composer.json
+++ b/composer.json
@@ -7,15 +7,9 @@
   "config": {
     "sort-packages": true
   },
-  "repositories": [{
-    "type": "vcs",
-    "url": "https://github.com/Icinga/ipl-stdlib",
-    "no-api": true
-  }],
   "require": {
     "php": ">=5.4.0",
-    "evenement/evenement": "^2",
-    "ipl/stdlib": "^0.1",
+    "ipl/stdlib": "dev-feature/event-emitter || ^0.2",
     "psr/http-message": "~1.0"
   },
   "autoload": {
diff --git a/src/Form.php b/src/Form.php
index 301ec163..c967d90e 100644
--- a/src/Form.php
+++ b/src/Form.php
@@ -10,6 +10,11 @@
 
 class Form extends BaseHtmlElement
 {
+    const ON_ELEMENT_REGISTERED = 'elementRegistered';
+    const ON_ERROR = 'error';
+    const ON_REQUEST = 'request';
+    const ON_SUCCESS = 'success';
+
     use FormElementContainer;
     use MessageContainer;
 
@@ -30,6 +35,7 @@ class Form extends BaseHtmlElement
     public function setRequest($request)
     {
         $this->request = $request;
+        $this->emit(Form::ON_REQUEST, [$request]);
 
         return $this;
     }
@@ -57,9 +63,11 @@ public function handleRequest(ServerRequestInterface $request)
             if ($this->isValid()) {
                 try {
                     $this->onSuccess();
+                    $this->emitOnce(Form::ON_SUCCESS, [$this]);
                 } catch (Exception $e) {
                     $this->addMessage($e);
                     $this->onError();
+                    $this->emit(Form::ON_ERROR, [$e, $this]);
                 }
             } else {
                 $this->onError();
diff --git a/src/FormElement/FormElementContainer.php b/src/FormElement/FormElementContainer.php
index 5da2e8d1..a584e761 100644
--- a/src/FormElement/FormElementContainer.php
+++ b/src/FormElement/FormElementContainer.php
@@ -7,11 +7,13 @@
 use ipl\Html\Form;
 use ipl\Html\FormDecorator\DecoratorInterface;
 use ipl\Html\ValidHtml;
+use ipl\Stdlib\EventEmitter;
 use ipl\Stdlib\Loader\PluginLoader;
 
 trait FormElementContainer
 {
     use PluginLoader;
+    use EventEmitter;
 
     /** @var BaseFormElement[] */
     private $elements = [];
@@ -119,7 +121,7 @@ protected function eventuallyRegisterDefaultDecoratorLoader()
      */
     public function getElement($name)
     {
-        if (! array_key_exists($name, $this->elements)) {
+        if (! \array_key_exists($name, $this->elements)) {
             throw new InvalidArgumentException(sprintf(
                 'Trying to get non-existent element "%s"',
                 $name
@@ -134,10 +136,10 @@ public function getElement($name)
      */
     public function hasElement($element)
     {
-        if (is_string($element)) {
-            return array_key_exists($element, $this->elements);
+        if (\is_string($element)) {
+            return \array_key_exists($element, $this->elements);
         } elseif ($element instanceof BaseFormElement) {
-            return in_array($element, $this->elements, true);
+            return \in_array($element, $this->elements, true);
         } else {
             return false;
         }
@@ -194,7 +196,7 @@ protected function decorate(BaseFormElement $element)
      */
     public function registerElement($type, $name = null, $options = null)
     {
-        if (is_string($type)) {
+        if (\is_string($type)) {
             $type = $this->createElement($type, $name, $options);
         // TODO: } elseif ($type instanceof FormElementInterface) {
         } elseif ($type instanceof BaseHtmlElement) {
@@ -210,6 +212,7 @@ public function registerElement($type, $name = null, $options = null)
         $this->elements[$name] = $type;
 
         $this->onElementRegistered($name, $type);
+        $this->emit(Form::ON_ELEMENT_REGISTERED, [$name, $type]);
 
         return $this;
     }
@@ -221,7 +224,7 @@ public function onElementRegistered($name, BaseFormElement $element)
             $this->setSubmitButton($element);
         }
 
-        if (array_key_exists($name, $this->populatedValues)) {
+        if (\array_key_exists($name, $this->populatedValues)) {
             $element->setValue($this->populatedValues[$name]);
         }
     }
@@ -307,4 +310,14 @@ public function getDefaultElementDecorator()
     {
         return $this->defaultElementDecorator;
     }
+
+    public function isValidEvent($event)
+    {
+        return \in_array($event, [
+            Form::ON_SUCCESS,
+            Form::ON_ERROR,
+            Form::ON_REQUEST,
+            Form::ON_ELEMENT_REGISTERED,
+        ]);
+    }
 }