Disable drag&drop events for the default home

library/Icinga/Web/Dashboard/Common/DashboardManager.php

@@ -170,7 +170,7 @@ trait DashboardManager
                     'user_id'  => self::getUser()->getAdditional('id'),
                     'name'     => $home->getName(),
                     'label'    => $home->getTitle(),
-                    'priority' => $home->getName() === DashboardHome::DEFAULT_HOME ? 0 : $priority++,
+                    'priority' => $home->isDefaultHome() ? 0 : $priority++,
                     'type'     => $home->getType() !== Dashboard::SYSTEM ? $home->getType() : Dashboard::PRIVATE_DS
                 ]);
 

library/Icinga/Web/Dashboard/Common/ItemListControl.php

@@ -44,6 +44,16 @@ abstract class ItemListControl extends BaseHtmlElement
      */
     abstract protected function createItemList(): BaseHtmlElement;
 
+    /**
+     * Get whether to render the drag initiator icon bars
+     *
+     * @return bool
+     */
+    protected function shouldRenderDragInitiator(): bool
+    {
+        return true;
+    }
+
     /**
      * Get a drag initiator for this widget item
      *
@@ -76,7 +86,10 @@ abstract class ItemListControl extends BaseHtmlElement
         ]));
 
         $header->addHtml(HtmlElement::create('div', ['class' => 'spacer']));
-        $header->addHtml(self::createDragInitiator());
+        if ($this->shouldRenderDragInitiator()) {
+            $header->addHtml(self::createDragInitiator());
+        }
+
         $this->addHtml($header);
     }
 

library/Icinga/Web/Dashboard/Dashboard.php

@@ -152,7 +152,7 @@ class Dashboard extends BaseHtmlElement implements DashboardEntry
     protected function assemble()
     {
         $activeHome = $this->getActiveHome();
-        if (! $activeHome || (! $activeHome->hasEntries() && $activeHome->getName() === DashboardHome::DEFAULT_HOME)) {
+        if (! $activeHome || (! $activeHome->hasEntries() && $activeHome->isDefaultHome())) {
             $this->setAttribute('class', 'dashboard-introduction');
 
             $this->addHtml(HtmlElement::create('h2', null, t('Welcome to Icinga Web 2!')));

library/Icinga/Web/Dashboard/DashboardHome.php

@@ -63,6 +63,16 @@ class DashboardHome extends BaseDashboard implements Sortable
         return $self;
     }
 
+    /**
+     * Get whether this home is the default one
+     *
+     * @return bool
+     */
+    public function isDefaultHome(): bool
+    {
+        return $this->getName() === self::DEFAULT_HOME;
+    }
+
     /**
      * Set the type of this dashboard home
      *

library/Icinga/Web/Dashboard/ItemList/DashboardHomeList.php

@@ -26,6 +26,12 @@ class DashboardHomeList extends ItemListControl
     public function __construct(DashboardHome $home)
     {
         $this->home = $home;
+
+        $this->init();
+    }
+
+    protected function init()
+    {
         if (! $this->home->hasEntries()) {
             // Just retry to load dashboards
             $this->home->loadDashboardEntries();
@@ -34,6 +40,9 @@ class DashboardHomeList extends ItemListControl
         $this->getAttributes()
             ->registerAttributeCallback('data-icinga-home', function () {
                 return $this->home->getName();
+            })
+            ->registerAttributeCallback('data-disable-widget-sorting', function () {
+                return $this->home->isDefaultHome();
             });
     }
 
@@ -61,6 +70,11 @@ class DashboardHomeList extends ItemListControl
         return $this->home->isActive();
     }
 
+    protected function shouldRenderDragInitiator(): bool
+    {
+        return ! $this->home->isDefaultHome();
+    }
+
     protected function createItemList(): BaseHtmlElement
     {
         if (! $this->headerDisabled) {

library/Icinga/Web/Dashboard/Settings.php

@@ -24,7 +24,7 @@ class Settings extends BaseHtmlElement
     protected function assemble()
     {
         $activeHome = $this->dashboard->getActiveHome();
-        if (count($this->dashboard->getEntries()) === 1 && $activeHome->getName() === DashboardHome::DEFAULT_HOME) {
+        if (count($this->dashboard->getEntries()) === 1 && $activeHome->isDefaultHome()) {
             $this->setAttribute('data-icinga-home', DashboardHome::DEFAULT_HOME);
             $this->addFrom((new DashboardHomeList($activeHome))->setHeaderDisabled());
         } else {

public/js/icinga/behavior/dashboards.js

@@ -166,7 +166,10 @@
                         draggable   : draggable,
                         handle      : '.widget-drag-initiator',
                         group       : { name : groupName },
-                        chosenClass : 'draggable-widget-chosen'
+                        chosenClass : 'draggable-widget-chosen',
+                        onMove      : function (evt, orgEvt) {
+                            return ! evt.related.matches('[data-disable-widget-sorting]');
+                        }
                     };
 
                     _this.Sortable.create(sortable, options);