Show a treeview in the admin menus, to select between the different elements.

src/Helpers/TreeViewNode.php

@@ -40,6 +40,8 @@ class TreeViewNode
     protected $href;
     protected $nodes;
 
+    protected $state;
+
     /**
      * Creates a new TreeView node with the given parameters.
      * @param string $text The text that is shown in the node. (e.g. the name of the node)
@@ -53,6 +55,8 @@ class TreeViewNode
         $this->text = $text;
         $this->href = $href;
         $this->nodes = $nodes;
+
+        $this->state = new TreeViewNodeState();
     }
 
     /**
@@ -115,4 +119,29 @@ class TreeViewNode
         return $this;
     }
 
+    public function getState() : TreeViewNodeState
+    {
+        return $this->state;
+    }
+
+    public function setState(TreeViewNodeState $state) : self
+    {
+        $this->state = $state;
+        return $this;
+    }
+
+    public function setDisabled(?bool $disabled) : self
+    {
+        $this->state->setDisabled($disabled);
+
+        return $this;
+    }
+
+    public function setSelected(?bool $selected) : self
+    {
+        $this->state->setSelected($selected);
+
+        return $this;
+    }
+
 }

src/Helpers/TreeViewNodeState.php

@@ -0,0 +1,98 @@
+<?php
+/**
+ *
+ * part-db version 0.1
+ * Copyright (C) 2005 Christoph Lechner
+ * http://www.cl-projects.de/
+ *
+ * part-db version 0.2+
+ * Copyright (C) 2009 K. Jacobs and others (see authors.php)
+ * http://code.google.com/p/part-db/
+ *
+ * Part-DB Version 0.4+
+ * Copyright (C) 2016 - 2019 Jan Böhmer
+ * https://github.com/jbtronics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ *
+ */
+
+namespace App\Helpers;
+
+
+class TreeViewNodeState
+{
+    /** @var null|bool */
+    protected $checked = null;
+
+    /** @var null|bool */
+    protected $disabled = null;
+
+    /** @var null|bool */
+    protected $expanded = null;
+
+    /** @var null|bool */
+    protected $selected = null;
+
+    /**
+     * @return bool|null
+     */
+    public function getDisabled(): ?bool
+    {
+        return $this->disabled;
+    }
+
+    /**
+     * @param bool|null $disabled
+     */
+    public function setDisabled(?bool $disabled): void
+    {
+        $this->disabled = $disabled;
+    }
+
+    /**
+     * @return bool|null
+     */
+    public function getExpanded(): ?bool
+    {
+        return $this->expanded;
+    }
+
+    /**
+     * @param bool|null $expanded
+     */
+    public function setExpanded(?bool $expanded): void
+    {
+        $this->expanded = $expanded;
+    }
+
+    /**
+     * @return bool|null
+     */
+    public function getSelected(): ?bool
+    {
+        return $this->selected;
+    }
+
+    /**
+     * @param bool|null $selected
+     */
+    public function setSelected(?bool $selected): void
+    {
+        $this->selected = $selected;
+    }
+
+
+}