AdditionalTableActions: add showsql to the GUI

fixes #1227

library/Director/Web/Controller/ObjectsController.php

@@ -19,6 +19,7 @@ use Icinga\Module\Director\Web\Table\TemplatesTable;
 use Icinga\Module\Director\Web\Tabs\ObjectsTabs;
 use Icinga\Module\Director\Web\Tree\TemplateTreeRenderer;
 use dipl\Html\Link;
+use Icinga\Module\Director\Web\Widget\AdditionalTableActions;
 
 abstract class ObjectsController extends ActionController
 {
@@ -91,6 +92,8 @@ abstract class ObjectsController extends ActionController
         // Hint: might be used in controllers extending this
         $this->table = $this->getTable();
         $this->table->renderTo($this);
+        (new AdditionalTableActions($this->getAuth(), $this->url()))
+            ->appendTo($this->actions());
     }
 
     protected function getTable()

library/Director/Web/Widget/AdditionalTableActions.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace Icinga\Module\Director\Web\Widget;
+
+use dipl\Html\Html;
+use dipl\Html\Icon;
+use dipl\Html\Link;
+use dipl\Translation\TranslationHelper;
+use dipl\Web\Url;
+use Icinga\Authentication\Auth;
+
+class AdditionalTableActions
+{
+    use TranslationHelper;
+
+    /** @var Auth */
+    protected $auth;
+
+    /** @var Url */
+    protected $url;
+
+    public function __construct(Auth $auth, Url $url)
+    {
+        $this->auth = $auth;
+        $this->url = $url;
+    }
+
+    public function appendTo(Html $parent)
+    {
+        $links = [];
+        if ($this->hasPermission('director/showsql')) {
+            $links[] = $this->createShowSqlToggle();
+        }
+
+        if (! empty($links)) {
+            $parent->add($this->moreOptions($links));
+        }
+
+        return $this;
+    }
+
+    protected function createShowSqlToggle()
+    {
+        if ($this->url->getParam('format') === 'sql') {
+            $link = Link::create(
+                $this->translate('Hide SQL'),
+                $this->url->without('format')
+            );
+        } else {
+            $link = Link::create(
+                $this->translate('Show SQL'),
+                $this->url->with('format', 'sql')
+            );
+        }
+
+        return $link;
+    }
+
+    protected function moreOptions($links)
+    {
+        $options = $this->ul(
+            $this->li([
+                // TODO: extend link for dropdown-toggle from Web 2, doesn't
+                // seem to work: [..], null, ['class' => 'dropdown-toggle']
+                Link::create(Icon::create('down-open'), '#'),
+                $subUl = Html::tag('ul')
+            ]),
+            ['class' => 'nav']
+        );
+
+        foreach ($links as $link) {
+            $subUl->add($this->li($link));
+        }
+
+        return $options;
+    }
+
+    protected function ulLi($content)
+    {
+        return $this->ul($this->li($content));
+    }
+
+    protected function ul($content, $attributes = null)
+    {
+        return Html::tag('ul', $attributes, $content);
+    }
+
+    protected function li($content)
+    {
+        return Html::tag('li', null, $content);
+    }
+
+    protected function hasPermission($permission)
+    {
+        return $this->auth->hasPermission($permission);
+    }
+}