UserBackendConfigForm: Allow to manually validate the configuration

refs #7588

application/forms/Config/UserBackendConfigForm.php

@@ -44,6 +44,7 @@ class UserBackendConfigForm extends ConfigForm
     {
         $this->setName('form_config_authbackend');
         $this->setSubmitLabel($this->translate('Save Changes'));
+        $this->setValidatePartial(true);
     }
 
     /**
@@ -399,4 +400,86 @@ class UserBackendConfigForm extends ConfigForm
             )
         );
     }
+
+    /**
+     * Run the configured backend's inspection checks and show the result, if necessary
+     *
+     * This will only run any validation if the user pushed the 'backend_validation' button.
+     *
+     * @param   array   $formData
+     *
+     * @return  bool
+     */
+    public function isValidPartial(array $formData)
+    {
+        if ($this->getElement('backend_validation')->isChecked() && parent::isValid($formData)) {
+            $inspection = static::inspectUserBackend($this);
+            if ($inspection !== null) {
+                $join = function ($e) use (& $join) {
+                    return is_string($e) ? $e : join("\n", array_map($join, $e));
+                };
+                $this->addElement(
+                    'note',
+                    'inspection_output',
+                    array(
+                        'order'         => 0,
+                        'value'         => '<strong>' . $this->translate('Validation Log') . "</strong>\n\n"
+                            . join("\n", array_map($join, $inspection->toArray())),
+                        'decorators'    => array(
+                            'ViewHelper',
+                            array('HtmlTag', array('tag' => 'pre', 'class' => 'log-output')),
+                        )
+                    )
+                );
+
+                if ($inspection->hasError()) {
+                    $this->warning(sprintf(
+                        $this->translate('Failed to successfully validate the configuration: %s'),
+                        $inspection->getError()
+                    ));
+                    return false;
+                }
+            }
+
+            $this->info($this->translate('The configuration has been successfully validated.'));
+        }
+
+        return true;
+    }
+
+    /**
+     * Add a submit button to this form and one to manually validate the configuration
+     *
+     * Calls parent::addSubmitButton() to add the submit button.
+     *
+     * @return  $this
+     */
+    public function addSubmitButton()
+    {
+        parent::addSubmitButton()
+            ->getElement('btn_submit')
+            ->setDecorators(array('ViewHelper'));
+
+        $this->addElement(
+            'submit',
+            'backend_validation',
+            array(
+                'ignore'        => true,
+                'label'         => $this->translate('Validate Configuration'),
+                'decorators'    => array('ViewHelper')
+            )
+        );
+        $this->addDisplayGroup(
+            array('btn_submit', 'backend_validation'),
+            'submit_validation',
+            array(
+                'decorators' => array(
+                    'FormElements',
+                    array('HtmlTag', array('tag' => 'div', 'class' => 'control-group'))
+                )
+            )
+        );
+
+        return $this;
+    }
 }

public/css/icinga/main-content.less

@@ -12,6 +12,15 @@ p code {
   padding: 0.3em;
 }
 
+pre.log-output {
+  padding: 0.5em;
+  margin-top: 0;
+  margin-bottom: 2em;
+  max-height: 12em;
+  overflow: auto;
+  border: 1px solid #ddd;
+}
+
 a {
   color: #39a;
 }