Node: Introduce $icon property

library/Businessprocess/BpNode.php

@@ -520,4 +520,10 @@ class BpNode extends Node
                 return 'min:' . $this->operator;
         }
     }
+
+    public function getIcon()
+    {
+        $this->icon = $this->hasParents() ? 'cubes' : 'sitemap';
+        return parent::getIcon();
+    }
 }

library/Businessprocess/HostNode.php

@@ -32,6 +32,8 @@ class HostNode extends MonitoredNode
 
     protected $className = 'host';
 
+    protected $icon = 'host';
+
     public function __construct(BpConfig $bp, $object)
     {
         $this->name     = $object->hostname . ';Hoststatus';

library/Businessprocess/ImportedNode.php

@@ -22,6 +22,8 @@ class ImportedNode extends Node
 
     protected $className = 'subtree';
 
+    protected $icon = 'download';
+
     /** @var BpConfig */
     private $config;
 

library/Businessprocess/Node.php

@@ -83,6 +83,13 @@ abstract class Node
     // obsolete
     protected $duration;
 
+    /**
+     * This node's icon
+     *
+     * @var string
+     */
+    protected $icon;
+
     /**
      * Last state change, unix timestamp
      *
@@ -382,6 +389,11 @@ abstract class Node
         return Html::tag('a', ['href' => '#'], $this->getAlias());
     }
 
+    public function getIcon()
+    {
+        return Html::tag('i', ['class' => 'icon icon-' . ($this->icon ?: 'attention-circled')]);
+    }
+
     public function operatorHtml()
     {
         return ' ';

library/Businessprocess/ServiceNode.php

@@ -12,6 +12,8 @@ class ServiceNode extends MonitoredNode
 
     protected $className = 'service';
 
+    protected $icon = 'service';
+
     public function __construct(BpConfig $bp, $object)
     {
         $this->name = $object->hostname . ';' . $object->service;