DashboardController: Allow to update panes

refs #2901

application/controllers/DashboardController.php

@@ -6,6 +6,7 @@ namespace Icinga\Controllers;
 use Exception;
 use Zend_Controller_Action_Exception;
 use Icinga\Exception\ProgrammingError;
+use Icinga\Exception\Http\HttpNotFoundException;
 use Icinga\Forms\ConfirmRemovalForm;
 use Icinga\Forms\Dashboard\DashletForm;
 use Icinga\Web\Controller\ActionController;
@@ -197,6 +198,62 @@ class DashboardController extends ActionController
         $this->view->form = $form;
     }
 
+    public function renamePaneAction()
+    {
+        $paneName = $this->params->getRequired('pane');
+        if (! $this->dashboard->hasPane($paneName)) {
+            throw new HttpNotFoundException('Pane not found');
+        }
+
+        $form = new Form();
+        $form->setRedirectUrl('dashboard/settings');
+        $form->setSubmitLabel($this->translate('Update Pane'));
+        $form->addElement(
+            'text',
+            'name',
+            array(
+                'required'  => true,
+                'label'     => $this->translate('Name')
+            )
+        );
+        $form->addElement(
+            'text',
+            'title',
+            array(
+                'required'  => true,
+                'label'     => $this->translate('Title')
+            )
+        );
+        $form->setDefaults(array(
+            'name'  => $paneName,
+            'title' => $this->dashboard->getPane($paneName)->getTitle()
+        ));
+        $form->setOnSuccess(function ($form) use ($paneName) {
+            $newName = $form->getValue('name');
+            $newTitle = $form->getValue('title');
+
+            $pane = $this->dashboard->getPane($paneName);
+            $pane->setName($newName);
+            $pane->setTitle($newTitle);
+            $this->dashboard->getConfig()->saveIni();
+
+            Notification::success(
+                sprintf($this->translate('Pane "%s" successfully renamed to "%s"'), $paneName, $newName)
+            );
+        });
+
+        $form->handleRequest();
+
+        $this->view->form = $form;
+        $this->getTabs()->add(
+            'update-pane',
+            array(
+                'title' => $this->translate('Update Pane'),
+                'url'   => $this->getRequest()->getUrl()
+            )
+        )->activate('update-pane');
+    }
+
     public function removePaneAction()
     {
         $form = new ConfirmRemovalForm();

application/views/scripts/dashboard/rename-pane.phtml

@@ -0,0 +1,6 @@
+<div class="controls">
+    <?= $this->tabs ?>
+</div>
+<div class="content">
+    <?= $this->form; ?>
+</div>

application/views/scripts/dashboard/settings.phtml

@@ -21,7 +21,16 @@
                 <?php if ($pane->getDisabled()) continue; ?>
                 <tr style="background-color: #f1f1f1;">
                     <th colspan="2" style="text-align: left; padding: 0.5em;">
+                    <?php if ($pane->isUserWidget()): ?>
+                        <?= $this->qlink(
+                            $pane->getName(),
+                            'dashboard/rename-pane',
+                            array('pane' => $pane->getName()),
+                            array('title' => sprintf($this->translate('Edit pane %s'), $pane->getName()))
+                        ) ?>
+                    <?php else: ?>
                         <?= $this->escape($pane->getName()) ?>
+                    <?php endif ?>
                     </th>
                     <th>
                         <?= $this->qlink(