Add a form node for showing notices

diff --git a/wcfsetup/install/files/lib/system/form/builder/NoticeFormNode.class.php b/wcfsetup/install/files/lib/system/form/builder/NoticeFormNode.class.php
new file mode 100644 (file)
index 0000000..3b00aa4
--- /dev/null
+++ b/wcfsetup/install/files/lib/system/form/builder/NoticeFormNode.class.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace wcf\system\form\builder;
+
+/**
+ * Form node that shows a notice.
+ *
+ * @author      Marcel Werk
+ * @copyright   2001-2023 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since       6.1
+ */
+class NoticeFormNode extends LanguageItemFormNode
+{
+    const AVAILABLE_TYPES = ['info', 'success', 'warning', 'error'];
+
+    protected string $type = 'info';
+
+    /**
+     * @inheritDoc
+     */
+    public function getHtml()
+    {
+        return '<woltlab-core-notice type="' . $this->getType() . '">' . parent::getHtml() . '</woltlab-core-notice>';
+    }
+
+    /**
+     * Sets the type of this notice.
+     */
+    public function type(string $type): static
+    {
+        if (!\in_array($type, self::AVAILABLE_TYPES)) {
+            throw new \BadMethodCallException("Invalid value '{$type}' given.");
+        }
+
+        $this->type = $type;
+
+        return $this;
+    }
+
+    public function getType(): string
+    {
+        return $this->type;
+    }
+}