Adds new view event system, add event to sign in form

modules/backend/controllers/auth/signin.htm

@@ -26,6 +26,7 @@
                 autocomplete="off"
                 maxlength="255" />
 
+                <!-- Submit Login -->
                 <button type="submit" class="btn btn-primary login-button">
                     <?= e(trans('backend::lang.account.login')) ?>
                 </button>
@@ -38,6 +39,7 @@
             </a>
         </p>
 
-        <!-- Submit Login -->
     </div>
-<?= Form::close() ?>
+<?= Form::close() ?>
+
+<?= $this->fireViewEvent('backend.auth.extendSigninView') ?>

modules/system/traits/ViewMaker.php

@@ -2,6 +2,7 @@
 
 use File;
 use Lang;
+use Event;
 use Block;
 use SystemException;
 
@@ -233,4 +234,20 @@ trait ViewMaker
         $guessedPath = $classFile ? $classFile . '/' . $classFolder . $suffix : null;
         return ($isPublic) ? File::localToPublic($guessedPath) : $guessedPath;
     }
+
+    /**
+     * Special event function used for extending within view files
+     * @param string $event Event name
+     * @param array $params Event parameters
+     * @return string
+     */
+    public function fireViewEvent($event, $params = [])
+    {
+        // Add the local object to the first parameter always
+        array_unshift($params, $this);
+
+        if ($result = Event::fire($event, $params)) {
+            return implode(PHP_EOL.PHP_EOL, (array) $result);
+        }
+    }
 }